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6369 lines
154 KiB
6369 lines
154 KiB
/* |
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* drivers/net/wireless/mwl8k.c |
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* Driver for Marvell TOPDOG 802.11 Wireless cards |
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* |
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* Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc. |
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* |
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* This file is licensed under the terms of the GNU General Public |
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* License version 2. This program is licensed "as is" without any |
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* warranty of any kind, whether express or implied. |
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*/ |
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|
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#include <linux/interrupt.h> |
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#include <linux/module.h> |
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#include <linux/kernel.h> |
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#include <linux/sched.h> |
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#include <linux/spinlock.h> |
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#include <linux/list.h> |
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#include <linux/pci.h> |
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#include <linux/delay.h> |
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#include <linux/completion.h> |
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#include <linux/etherdevice.h> |
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#include <linux/slab.h> |
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#include <net/mac80211.h> |
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#include <linux/moduleparam.h> |
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#include <linux/firmware.h> |
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#include <linux/workqueue.h> |
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#define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver" |
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#define MWL8K_NAME KBUILD_MODNAME |
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#define MWL8K_VERSION "0.13" |
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|
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/* Module parameters */ |
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static bool ap_mode_default; |
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module_param(ap_mode_default, bool, 0); |
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MODULE_PARM_DESC(ap_mode_default, |
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"Set to 1 to make ap mode the default instead of sta mode"); |
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|
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/* Register definitions */ |
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#define MWL8K_HIU_GEN_PTR 0x00000c10 |
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#define MWL8K_MODE_STA 0x0000005a |
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#define MWL8K_MODE_AP 0x000000a5 |
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#define MWL8K_HIU_INT_CODE 0x00000c14 |
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#define MWL8K_FWSTA_READY 0xf0f1f2f4 |
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#define MWL8K_FWAP_READY 0xf1f2f4a5 |
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#define MWL8K_INT_CODE_CMD_FINISHED 0x00000005 |
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#define MWL8K_HIU_SCRATCH 0x00000c40 |
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|
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/* Host->device communications */ |
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#define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18 |
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#define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c |
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#define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20 |
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#define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24 |
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#define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28 |
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#define MWL8K_H2A_INT_DUMMY (1 << 20) |
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#define MWL8K_H2A_INT_RESET (1 << 15) |
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#define MWL8K_H2A_INT_DOORBELL (1 << 1) |
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#define MWL8K_H2A_INT_PPA_READY (1 << 0) |
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|
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/* Device->host communications */ |
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#define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c |
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#define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30 |
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#define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34 |
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#define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38 |
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#define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c |
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#define MWL8K_A2H_INT_DUMMY (1 << 20) |
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#define MWL8K_A2H_INT_BA_WATCHDOG (1 << 14) |
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#define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11) |
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#define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10) |
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#define MWL8K_A2H_INT_RADAR_DETECT (1 << 7) |
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#define MWL8K_A2H_INT_RADIO_ON (1 << 6) |
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#define MWL8K_A2H_INT_RADIO_OFF (1 << 5) |
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#define MWL8K_A2H_INT_MAC_EVENT (1 << 3) |
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#define MWL8K_A2H_INT_OPC_DONE (1 << 2) |
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#define MWL8K_A2H_INT_RX_READY (1 << 1) |
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#define MWL8K_A2H_INT_TX_DONE (1 << 0) |
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|
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/* HW micro second timer register |
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* located at offset 0xA600. This |
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* will be used to timestamp tx |
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* packets. |
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*/ |
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|
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#define MWL8K_HW_TIMER_REGISTER 0x0000a600 |
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#define BBU_RXRDY_CNT_REG 0x0000a860 |
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#define NOK_CCA_CNT_REG 0x0000a6a0 |
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#define BBU_AVG_NOISE_VAL 0x67 |
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#define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \ |
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MWL8K_A2H_INT_CHNL_SWITCHED | \ |
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MWL8K_A2H_INT_QUEUE_EMPTY | \ |
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MWL8K_A2H_INT_RADAR_DETECT | \ |
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MWL8K_A2H_INT_RADIO_ON | \ |
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MWL8K_A2H_INT_RADIO_OFF | \ |
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MWL8K_A2H_INT_MAC_EVENT | \ |
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MWL8K_A2H_INT_OPC_DONE | \ |
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MWL8K_A2H_INT_RX_READY | \ |
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MWL8K_A2H_INT_TX_DONE | \ |
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MWL8K_A2H_INT_BA_WATCHDOG) |
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|
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#define MWL8K_RX_QUEUES 1 |
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#define MWL8K_TX_WMM_QUEUES 4 |
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#define MWL8K_MAX_AMPDU_QUEUES 8 |
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#define MWL8K_MAX_TX_QUEUES (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES) |
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#define mwl8k_tx_queues(priv) (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues) |
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|
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/* txpriorities are mapped with hw queues. |
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* Each hw queue has a txpriority. |
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*/ |
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#define TOTAL_HW_TX_QUEUES 8 |
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|
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/* Each HW queue can have one AMPDU stream. |
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* But, because one of the hw queue is reserved, |
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* maximum AMPDU queues that can be created are |
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* one short of total tx queues. |
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*/ |
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#define MWL8K_NUM_AMPDU_STREAMS (TOTAL_HW_TX_QUEUES - 1) |
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|
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#define MWL8K_NUM_CHANS 18 |
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|
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struct rxd_ops { |
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int rxd_size; |
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void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr); |
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void (*rxd_refill)(void *rxd, dma_addr_t addr, int len); |
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int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status, |
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__le16 *qos, s8 *noise); |
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}; |
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struct mwl8k_device_info { |
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char *part_name; |
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char *helper_image; |
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char *fw_image_sta; |
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char *fw_image_ap; |
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struct rxd_ops *ap_rxd_ops; |
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u32 fw_api_ap; |
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}; |
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struct mwl8k_rx_queue { |
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int rxd_count; |
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/* hw receives here */ |
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int head; |
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/* refill descs here */ |
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int tail; |
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void *rxd; |
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dma_addr_t rxd_dma; |
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struct { |
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struct sk_buff *skb; |
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DEFINE_DMA_UNMAP_ADDR(dma); |
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} *buf; |
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}; |
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struct mwl8k_tx_queue { |
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/* hw transmits here */ |
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int head; |
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/* sw appends here */ |
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int tail; |
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unsigned int len; |
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struct mwl8k_tx_desc *txd; |
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dma_addr_t txd_dma; |
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struct sk_buff **skb; |
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}; |
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enum { |
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AMPDU_NO_STREAM, |
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AMPDU_STREAM_NEW, |
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AMPDU_STREAM_IN_PROGRESS, |
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AMPDU_STREAM_ACTIVE, |
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}; |
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struct mwl8k_ampdu_stream { |
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struct ieee80211_sta *sta; |
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u8 tid; |
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u8 state; |
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u8 idx; |
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}; |
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struct mwl8k_priv { |
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struct ieee80211_hw *hw; |
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struct pci_dev *pdev; |
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int irq; |
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struct mwl8k_device_info *device_info; |
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|
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void __iomem *sram; |
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void __iomem *regs; |
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/* firmware */ |
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const struct firmware *fw_helper; |
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const struct firmware *fw_ucode; |
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|
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/* hardware/firmware parameters */ |
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bool ap_fw; |
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struct rxd_ops *rxd_ops; |
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struct ieee80211_supported_band band_24; |
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struct ieee80211_channel channels_24[14]; |
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struct ieee80211_rate rates_24[13]; |
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struct ieee80211_supported_band band_50; |
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struct ieee80211_channel channels_50[9]; |
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struct ieee80211_rate rates_50[8]; |
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u32 ap_macids_supported; |
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u32 sta_macids_supported; |
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|
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/* Ampdu stream information */ |
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u8 num_ampdu_queues; |
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spinlock_t stream_lock; |
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struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES]; |
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struct work_struct watchdog_ba_handle; |
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/* firmware access */ |
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struct mutex fw_mutex; |
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struct task_struct *fw_mutex_owner; |
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struct task_struct *hw_restart_owner; |
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int fw_mutex_depth; |
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struct completion *hostcmd_wait; |
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atomic_t watchdog_event_pending; |
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/* lock held over TX and TX reap */ |
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spinlock_t tx_lock; |
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/* TX quiesce completion, protected by fw_mutex and tx_lock */ |
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struct completion *tx_wait; |
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/* List of interfaces. */ |
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u32 macids_used; |
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struct list_head vif_list; |
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/* power management status cookie from firmware */ |
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u32 *cookie; |
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dma_addr_t cookie_dma; |
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u16 num_mcaddrs; |
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u8 hw_rev; |
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u32 fw_rev; |
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u32 caps; |
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/* |
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* Running count of TX packets in flight, to avoid |
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* iterating over the transmit rings each time. |
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*/ |
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int pending_tx_pkts; |
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|
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struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES]; |
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struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES]; |
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u32 txq_offset[MWL8K_MAX_TX_QUEUES]; |
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|
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bool radio_on; |
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bool radio_short_preamble; |
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bool sniffer_enabled; |
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bool wmm_enabled; |
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/* XXX need to convert this to handle multiple interfaces */ |
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bool capture_beacon; |
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u8 capture_bssid[ETH_ALEN]; |
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struct sk_buff *beacon_skb; |
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/* |
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* This FJ worker has to be global as it is scheduled from the |
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* RX handler. At this point we don't know which interface it |
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* belongs to until the list of bssids waiting to complete join |
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* is checked. |
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*/ |
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struct work_struct finalize_join_worker; |
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/* Tasklet to perform TX reclaim. */ |
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struct tasklet_struct poll_tx_task; |
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/* Tasklet to perform RX. */ |
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struct tasklet_struct poll_rx_task; |
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/* Most recently reported noise in dBm */ |
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s8 noise; |
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/* |
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* preserve the queue configurations so they can be restored if/when |
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* the firmware image is swapped. |
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*/ |
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struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES]; |
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/* To perform the task of reloading the firmware */ |
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struct work_struct fw_reload; |
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bool hw_restart_in_progress; |
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/* async firmware loading state */ |
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unsigned fw_state; |
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char *fw_pref; |
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char *fw_alt; |
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bool is_8764; |
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struct completion firmware_loading_complete; |
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/* bitmap of running BSSes */ |
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u32 running_bsses; |
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/* ACS related */ |
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bool sw_scan_start; |
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struct ieee80211_channel *acs_chan; |
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unsigned long channel_time; |
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struct survey_info survey[MWL8K_NUM_CHANS]; |
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}; |
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#define MAX_WEP_KEY_LEN 13 |
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#define NUM_WEP_KEYS 4 |
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/* Per interface specific private data */ |
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struct mwl8k_vif { |
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struct list_head list; |
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struct ieee80211_vif *vif; |
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/* Firmware macid for this vif. */ |
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int macid; |
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/* Non AMPDU sequence number assigned by driver. */ |
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u16 seqno; |
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/* Saved WEP keys */ |
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struct { |
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u8 enabled; |
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u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN]; |
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} wep_key_conf[NUM_WEP_KEYS]; |
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/* BSSID */ |
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u8 bssid[ETH_ALEN]; |
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/* A flag to indicate is HW crypto is enabled for this bssid */ |
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bool is_hw_crypto_enabled; |
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}; |
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#define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv)) |
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#define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8)) |
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struct tx_traffic_info { |
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u32 start_time; |
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u32 pkts; |
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}; |
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#define MWL8K_MAX_TID 8 |
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struct mwl8k_sta { |
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/* Index into station database. Returned by UPDATE_STADB. */ |
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u8 peer_id; |
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u8 is_ampdu_allowed; |
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struct tx_traffic_info tx_stats[MWL8K_MAX_TID]; |
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}; |
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#define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv)) |
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static const struct ieee80211_channel mwl8k_channels_24[] = { |
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{ .band = NL80211_BAND_2GHZ, .center_freq = 2412, .hw_value = 1, }, |
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{ .band = NL80211_BAND_2GHZ, .center_freq = 2417, .hw_value = 2, }, |
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{ .band = NL80211_BAND_2GHZ, .center_freq = 2422, .hw_value = 3, }, |
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{ .band = NL80211_BAND_2GHZ, .center_freq = 2427, .hw_value = 4, }, |
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{ .band = NL80211_BAND_2GHZ, .center_freq = 2432, .hw_value = 5, }, |
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{ .band = NL80211_BAND_2GHZ, .center_freq = 2437, .hw_value = 6, }, |
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{ .band = NL80211_BAND_2GHZ, .center_freq = 2442, .hw_value = 7, }, |
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{ .band = NL80211_BAND_2GHZ, .center_freq = 2447, .hw_value = 8, }, |
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{ .band = NL80211_BAND_2GHZ, .center_freq = 2452, .hw_value = 9, }, |
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{ .band = NL80211_BAND_2GHZ, .center_freq = 2457, .hw_value = 10, }, |
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{ .band = NL80211_BAND_2GHZ, .center_freq = 2462, .hw_value = 11, }, |
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{ .band = NL80211_BAND_2GHZ, .center_freq = 2467, .hw_value = 12, }, |
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{ .band = NL80211_BAND_2GHZ, .center_freq = 2472, .hw_value = 13, }, |
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{ .band = NL80211_BAND_2GHZ, .center_freq = 2484, .hw_value = 14, }, |
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}; |
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static const struct ieee80211_rate mwl8k_rates_24[] = { |
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{ .bitrate = 10, .hw_value = 2, }, |
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{ .bitrate = 20, .hw_value = 4, }, |
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{ .bitrate = 55, .hw_value = 11, }, |
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{ .bitrate = 110, .hw_value = 22, }, |
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{ .bitrate = 220, .hw_value = 44, }, |
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{ .bitrate = 60, .hw_value = 12, }, |
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{ .bitrate = 90, .hw_value = 18, }, |
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{ .bitrate = 120, .hw_value = 24, }, |
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{ .bitrate = 180, .hw_value = 36, }, |
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{ .bitrate = 240, .hw_value = 48, }, |
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{ .bitrate = 360, .hw_value = 72, }, |
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{ .bitrate = 480, .hw_value = 96, }, |
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{ .bitrate = 540, .hw_value = 108, }, |
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}; |
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static const struct ieee80211_channel mwl8k_channels_50[] = { |
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{ .band = NL80211_BAND_5GHZ, .center_freq = 5180, .hw_value = 36, }, |
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{ .band = NL80211_BAND_5GHZ, .center_freq = 5200, .hw_value = 40, }, |
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{ .band = NL80211_BAND_5GHZ, .center_freq = 5220, .hw_value = 44, }, |
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{ .band = NL80211_BAND_5GHZ, .center_freq = 5240, .hw_value = 48, }, |
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{ .band = NL80211_BAND_5GHZ, .center_freq = 5745, .hw_value = 149, }, |
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{ .band = NL80211_BAND_5GHZ, .center_freq = 5765, .hw_value = 153, }, |
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{ .band = NL80211_BAND_5GHZ, .center_freq = 5785, .hw_value = 157, }, |
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{ .band = NL80211_BAND_5GHZ, .center_freq = 5805, .hw_value = 161, }, |
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{ .band = NL80211_BAND_5GHZ, .center_freq = 5825, .hw_value = 165, }, |
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}; |
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static const struct ieee80211_rate mwl8k_rates_50[] = { |
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{ .bitrate = 60, .hw_value = 12, }, |
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{ .bitrate = 90, .hw_value = 18, }, |
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{ .bitrate = 120, .hw_value = 24, }, |
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{ .bitrate = 180, .hw_value = 36, }, |
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{ .bitrate = 240, .hw_value = 48, }, |
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{ .bitrate = 360, .hw_value = 72, }, |
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{ .bitrate = 480, .hw_value = 96, }, |
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{ .bitrate = 540, .hw_value = 108, }, |
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}; |
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|
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/* Set or get info from Firmware */ |
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#define MWL8K_CMD_GET 0x0000 |
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#define MWL8K_CMD_SET 0x0001 |
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#define MWL8K_CMD_SET_LIST 0x0002 |
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|
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/* Firmware command codes */ |
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#define MWL8K_CMD_CODE_DNLD 0x0001 |
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#define MWL8K_CMD_GET_HW_SPEC 0x0003 |
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#define MWL8K_CMD_SET_HW_SPEC 0x0004 |
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#define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010 |
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#define MWL8K_CMD_GET_STAT 0x0014 |
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#define MWL8K_CMD_BBP_REG_ACCESS 0x001a |
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#define MWL8K_CMD_RADIO_CONTROL 0x001c |
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#define MWL8K_CMD_RF_TX_POWER 0x001e |
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#define MWL8K_CMD_TX_POWER 0x001f |
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#define MWL8K_CMD_RF_ANTENNA 0x0020 |
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#define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */ |
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#define MWL8K_CMD_SET_PRE_SCAN 0x0107 |
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#define MWL8K_CMD_SET_POST_SCAN 0x0108 |
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#define MWL8K_CMD_SET_RF_CHANNEL 0x010a |
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#define MWL8K_CMD_SET_AID 0x010d |
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#define MWL8K_CMD_SET_RATE 0x0110 |
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#define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111 |
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#define MWL8K_CMD_RTS_THRESHOLD 0x0113 |
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#define MWL8K_CMD_SET_SLOT 0x0114 |
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#define MWL8K_CMD_SET_EDCA_PARAMS 0x0115 |
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#define MWL8K_CMD_SET_WMM_MODE 0x0123 |
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#define MWL8K_CMD_MIMO_CONFIG 0x0125 |
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#define MWL8K_CMD_USE_FIXED_RATE 0x0126 |
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#define MWL8K_CMD_ENABLE_SNIFFER 0x0150 |
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#define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */ |
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#define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203 |
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#define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205 |
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#define MWL8K_CMD_DEL_MAC_ADDR 0x0206 /* per-vif */ |
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#define MWL8K_CMD_BSS_START 0x1100 /* per-vif */ |
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#define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */ |
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#define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */ |
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#define MWL8K_CMD_UPDATE_STADB 0x1123 |
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#define MWL8K_CMD_BASTREAM 0x1125 |
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|
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#define MWL8K_LEGACY_5G_RATE_OFFSET \ |
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(ARRAY_SIZE(mwl8k_rates_24) - ARRAY_SIZE(mwl8k_rates_50)) |
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|
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static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize) |
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{ |
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u16 command = le16_to_cpu(cmd); |
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|
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#define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\ |
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snprintf(buf, bufsize, "%s", #x);\ |
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return buf;\ |
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} while (0) |
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switch (command & ~0x8000) { |
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MWL8K_CMDNAME(CODE_DNLD); |
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MWL8K_CMDNAME(GET_HW_SPEC); |
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MWL8K_CMDNAME(SET_HW_SPEC); |
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MWL8K_CMDNAME(MAC_MULTICAST_ADR); |
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MWL8K_CMDNAME(GET_STAT); |
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MWL8K_CMDNAME(RADIO_CONTROL); |
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MWL8K_CMDNAME(RF_TX_POWER); |
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MWL8K_CMDNAME(TX_POWER); |
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MWL8K_CMDNAME(RF_ANTENNA); |
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MWL8K_CMDNAME(SET_BEACON); |
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MWL8K_CMDNAME(SET_PRE_SCAN); |
|
MWL8K_CMDNAME(SET_POST_SCAN); |
|
MWL8K_CMDNAME(SET_RF_CHANNEL); |
|
MWL8K_CMDNAME(SET_AID); |
|
MWL8K_CMDNAME(SET_RATE); |
|
MWL8K_CMDNAME(SET_FINALIZE_JOIN); |
|
MWL8K_CMDNAME(RTS_THRESHOLD); |
|
MWL8K_CMDNAME(SET_SLOT); |
|
MWL8K_CMDNAME(SET_EDCA_PARAMS); |
|
MWL8K_CMDNAME(SET_WMM_MODE); |
|
MWL8K_CMDNAME(MIMO_CONFIG); |
|
MWL8K_CMDNAME(USE_FIXED_RATE); |
|
MWL8K_CMDNAME(ENABLE_SNIFFER); |
|
MWL8K_CMDNAME(SET_MAC_ADDR); |
|
MWL8K_CMDNAME(SET_RATEADAPT_MODE); |
|
MWL8K_CMDNAME(BSS_START); |
|
MWL8K_CMDNAME(SET_NEW_STN); |
|
MWL8K_CMDNAME(UPDATE_ENCRYPTION); |
|
MWL8K_CMDNAME(UPDATE_STADB); |
|
MWL8K_CMDNAME(BASTREAM); |
|
MWL8K_CMDNAME(GET_WATCHDOG_BITMAP); |
|
default: |
|
snprintf(buf, bufsize, "0x%x", cmd); |
|
} |
|
#undef MWL8K_CMDNAME |
|
|
|
return buf; |
|
} |
|
|
|
/* Hardware and firmware reset */ |
|
static void mwl8k_hw_reset(struct mwl8k_priv *priv) |
|
{ |
|
iowrite32(MWL8K_H2A_INT_RESET, |
|
priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); |
|
iowrite32(MWL8K_H2A_INT_RESET, |
|
priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); |
|
msleep(20); |
|
} |
|
|
|
/* Release fw image */ |
|
static void mwl8k_release_fw(const struct firmware **fw) |
|
{ |
|
if (*fw == NULL) |
|
return; |
|
release_firmware(*fw); |
|
*fw = NULL; |
|
} |
|
|
|
static void mwl8k_release_firmware(struct mwl8k_priv *priv) |
|
{ |
|
mwl8k_release_fw(&priv->fw_ucode); |
|
mwl8k_release_fw(&priv->fw_helper); |
|
} |
|
|
|
/* states for asynchronous f/w loading */ |
|
static void mwl8k_fw_state_machine(const struct firmware *fw, void *context); |
|
enum { |
|
FW_STATE_INIT = 0, |
|
FW_STATE_LOADING_PREF, |
|
FW_STATE_LOADING_ALT, |
|
FW_STATE_ERROR, |
|
}; |
|
|
|
/* Request fw image */ |
|
static int mwl8k_request_fw(struct mwl8k_priv *priv, |
|
const char *fname, const struct firmware **fw, |
|
bool nowait) |
|
{ |
|
/* release current image */ |
|
if (*fw != NULL) |
|
mwl8k_release_fw(fw); |
|
|
|
if (nowait) |
|
return request_firmware_nowait(THIS_MODULE, 1, fname, |
|
&priv->pdev->dev, GFP_KERNEL, |
|
priv, mwl8k_fw_state_machine); |
|
else |
|
return request_firmware(fw, fname, &priv->pdev->dev); |
|
} |
|
|
|
static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image, |
|
bool nowait) |
|
{ |
|
struct mwl8k_device_info *di = priv->device_info; |
|
int rc; |
|
|
|
if (di->helper_image != NULL) { |
|
if (nowait) |
|
rc = mwl8k_request_fw(priv, di->helper_image, |
|
&priv->fw_helper, true); |
|
else |
|
rc = mwl8k_request_fw(priv, di->helper_image, |
|
&priv->fw_helper, false); |
|
if (rc) |
|
printk(KERN_ERR "%s: Error requesting helper fw %s\n", |
|
pci_name(priv->pdev), di->helper_image); |
|
|
|
if (rc || nowait) |
|
return rc; |
|
} |
|
|
|
if (nowait) { |
|
/* |
|
* if we get here, no helper image is needed. Skip the |
|
* FW_STATE_INIT state. |
|
*/ |
|
priv->fw_state = FW_STATE_LOADING_PREF; |
|
rc = mwl8k_request_fw(priv, fw_image, |
|
&priv->fw_ucode, |
|
true); |
|
} else |
|
rc = mwl8k_request_fw(priv, fw_image, |
|
&priv->fw_ucode, false); |
|
if (rc) { |
|
printk(KERN_ERR "%s: Error requesting firmware file %s\n", |
|
pci_name(priv->pdev), fw_image); |
|
mwl8k_release_fw(&priv->fw_helper); |
|
return rc; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
struct mwl8k_cmd_pkt { |
|
__le16 code; |
|
__le16 length; |
|
__u8 seq_num; |
|
__u8 macid; |
|
__le16 result; |
|
char payload[]; |
|
} __packed; |
|
|
|
/* |
|
* Firmware loading. |
|
*/ |
|
static int |
|
mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length) |
|
{ |
|
void __iomem *regs = priv->regs; |
|
dma_addr_t dma_addr; |
|
int loops; |
|
|
|
dma_addr = dma_map_single(&priv->pdev->dev, data, length, |
|
DMA_TO_DEVICE); |
|
if (dma_mapping_error(&priv->pdev->dev, dma_addr)) |
|
return -ENOMEM; |
|
|
|
iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); |
|
iowrite32(0, regs + MWL8K_HIU_INT_CODE); |
|
iowrite32(MWL8K_H2A_INT_DOORBELL, |
|
regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); |
|
iowrite32(MWL8K_H2A_INT_DUMMY, |
|
regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); |
|
|
|
loops = 1000; |
|
do { |
|
u32 int_code; |
|
if (priv->is_8764) { |
|
int_code = ioread32(regs + |
|
MWL8K_HIU_H2A_INTERRUPT_STATUS); |
|
if (int_code == 0) |
|
break; |
|
} else { |
|
int_code = ioread32(regs + MWL8K_HIU_INT_CODE); |
|
if (int_code == MWL8K_INT_CODE_CMD_FINISHED) { |
|
iowrite32(0, regs + MWL8K_HIU_INT_CODE); |
|
break; |
|
} |
|
} |
|
cond_resched(); |
|
udelay(1); |
|
} while (--loops); |
|
|
|
dma_unmap_single(&priv->pdev->dev, dma_addr, length, DMA_TO_DEVICE); |
|
|
|
return loops ? 0 : -ETIMEDOUT; |
|
} |
|
|
|
static int mwl8k_load_fw_image(struct mwl8k_priv *priv, |
|
const u8 *data, size_t length) |
|
{ |
|
struct mwl8k_cmd_pkt *cmd; |
|
int done; |
|
int rc = 0; |
|
|
|
cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD); |
|
cmd->seq_num = 0; |
|
cmd->macid = 0; |
|
cmd->result = 0; |
|
|
|
done = 0; |
|
while (length) { |
|
int block_size = length > 256 ? 256 : length; |
|
|
|
memcpy(cmd->payload, data + done, block_size); |
|
cmd->length = cpu_to_le16(block_size); |
|
|
|
rc = mwl8k_send_fw_load_cmd(priv, cmd, |
|
sizeof(*cmd) + block_size); |
|
if (rc) |
|
break; |
|
|
|
done += block_size; |
|
length -= block_size; |
|
} |
|
|
|
if (!rc) { |
|
cmd->length = 0; |
|
rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd)); |
|
} |
|
|
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
static int mwl8k_feed_fw_image(struct mwl8k_priv *priv, |
|
const u8 *data, size_t length) |
|
{ |
|
unsigned char *buffer; |
|
int may_continue, rc = 0; |
|
u32 done, prev_block_size; |
|
|
|
buffer = kmalloc(1024, GFP_KERNEL); |
|
if (buffer == NULL) |
|
return -ENOMEM; |
|
|
|
done = 0; |
|
prev_block_size = 0; |
|
may_continue = 1000; |
|
while (may_continue > 0) { |
|
u32 block_size; |
|
|
|
block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH); |
|
if (block_size & 1) { |
|
block_size &= ~1; |
|
may_continue--; |
|
} else { |
|
done += prev_block_size; |
|
length -= prev_block_size; |
|
} |
|
|
|
if (block_size > 1024 || block_size > length) { |
|
rc = -EOVERFLOW; |
|
break; |
|
} |
|
|
|
if (length == 0) { |
|
rc = 0; |
|
break; |
|
} |
|
|
|
if (block_size == 0) { |
|
rc = -EPROTO; |
|
may_continue--; |
|
udelay(1); |
|
continue; |
|
} |
|
|
|
prev_block_size = block_size; |
|
memcpy(buffer, data + done, block_size); |
|
|
|
rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size); |
|
if (rc) |
|
break; |
|
} |
|
|
|
if (!rc && length != 0) |
|
rc = -EREMOTEIO; |
|
|
|
kfree(buffer); |
|
|
|
return rc; |
|
} |
|
|
|
static int mwl8k_load_firmware(struct ieee80211_hw *hw) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
const struct firmware *fw = priv->fw_ucode; |
|
int rc; |
|
int loops; |
|
|
|
if (!memcmp(fw->data, "\x01\x00\x00\x00", 4) && !priv->is_8764) { |
|
const struct firmware *helper = priv->fw_helper; |
|
|
|
if (helper == NULL) { |
|
printk(KERN_ERR "%s: helper image needed but none " |
|
"given\n", pci_name(priv->pdev)); |
|
return -EINVAL; |
|
} |
|
|
|
rc = mwl8k_load_fw_image(priv, helper->data, helper->size); |
|
if (rc) { |
|
printk(KERN_ERR "%s: unable to load firmware " |
|
"helper image\n", pci_name(priv->pdev)); |
|
return rc; |
|
} |
|
msleep(20); |
|
|
|
rc = mwl8k_feed_fw_image(priv, fw->data, fw->size); |
|
} else { |
|
if (priv->is_8764) |
|
rc = mwl8k_feed_fw_image(priv, fw->data, fw->size); |
|
else |
|
rc = mwl8k_load_fw_image(priv, fw->data, fw->size); |
|
} |
|
|
|
if (rc) { |
|
printk(KERN_ERR "%s: unable to load firmware image\n", |
|
pci_name(priv->pdev)); |
|
return rc; |
|
} |
|
|
|
iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR); |
|
|
|
loops = 500000; |
|
do { |
|
u32 ready_code; |
|
|
|
ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE); |
|
if (ready_code == MWL8K_FWAP_READY) { |
|
priv->ap_fw = true; |
|
break; |
|
} else if (ready_code == MWL8K_FWSTA_READY) { |
|
priv->ap_fw = false; |
|
break; |
|
} |
|
|
|
cond_resched(); |
|
udelay(1); |
|
} while (--loops); |
|
|
|
return loops ? 0 : -ETIMEDOUT; |
|
} |
|
|
|
|
|
/* DMA header used by firmware and hardware. */ |
|
struct mwl8k_dma_data { |
|
__le16 fwlen; |
|
struct ieee80211_hdr wh; |
|
char data[]; |
|
} __packed __aligned(2); |
|
|
|
/* Routines to add/remove DMA header from skb. */ |
|
static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos) |
|
{ |
|
struct mwl8k_dma_data *tr; |
|
int hdrlen; |
|
|
|
tr = (struct mwl8k_dma_data *)skb->data; |
|
hdrlen = ieee80211_hdrlen(tr->wh.frame_control); |
|
|
|
if (hdrlen != sizeof(tr->wh)) { |
|
if (ieee80211_is_data_qos(tr->wh.frame_control)) { |
|
memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2); |
|
*((__le16 *)(tr->data - 2)) = qos; |
|
} else { |
|
memmove(tr->data - hdrlen, &tr->wh, hdrlen); |
|
} |
|
} |
|
|
|
if (hdrlen != sizeof(*tr)) |
|
skb_pull(skb, sizeof(*tr) - hdrlen); |
|
} |
|
|
|
#define REDUCED_TX_HEADROOM 8 |
|
|
|
static void |
|
mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb, |
|
int head_pad, int tail_pad) |
|
{ |
|
struct ieee80211_hdr *wh; |
|
int hdrlen; |
|
int reqd_hdrlen; |
|
struct mwl8k_dma_data *tr; |
|
|
|
/* |
|
* Add a firmware DMA header; the firmware requires that we |
|
* present a 2-byte payload length followed by a 4-address |
|
* header (without QoS field), followed (optionally) by any |
|
* WEP/ExtIV header (but only filled in for CCMP). |
|
*/ |
|
wh = (struct ieee80211_hdr *)skb->data; |
|
|
|
hdrlen = ieee80211_hdrlen(wh->frame_control); |
|
|
|
/* |
|
* Check if skb_resize is required because of |
|
* tx_headroom adjustment. |
|
*/ |
|
if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts) |
|
+ REDUCED_TX_HEADROOM))) { |
|
if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) { |
|
|
|
wiphy_err(priv->hw->wiphy, |
|
"Failed to reallocate TX buffer\n"); |
|
return; |
|
} |
|
skb->truesize += REDUCED_TX_HEADROOM; |
|
} |
|
|
|
reqd_hdrlen = sizeof(*tr) + head_pad; |
|
|
|
if (hdrlen != reqd_hdrlen) |
|
skb_push(skb, reqd_hdrlen - hdrlen); |
|
|
|
if (ieee80211_is_data_qos(wh->frame_control)) |
|
hdrlen -= IEEE80211_QOS_CTL_LEN; |
|
|
|
tr = (struct mwl8k_dma_data *)skb->data; |
|
if (wh != &tr->wh) |
|
memmove(&tr->wh, wh, hdrlen); |
|
if (hdrlen != sizeof(tr->wh)) |
|
memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen); |
|
|
|
/* |
|
* Firmware length is the length of the fully formed "802.11 |
|
* payload". That is, everything except for the 802.11 header. |
|
* This includes all crypto material including the MIC. |
|
*/ |
|
tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad); |
|
} |
|
|
|
static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv, |
|
struct sk_buff *skb) |
|
{ |
|
struct ieee80211_hdr *wh; |
|
struct ieee80211_tx_info *tx_info; |
|
struct ieee80211_key_conf *key_conf; |
|
int data_pad; |
|
int head_pad = 0; |
|
|
|
wh = (struct ieee80211_hdr *)skb->data; |
|
|
|
tx_info = IEEE80211_SKB_CB(skb); |
|
|
|
key_conf = NULL; |
|
if (ieee80211_is_data(wh->frame_control)) |
|
key_conf = tx_info->control.hw_key; |
|
|
|
/* |
|
* Make sure the packet header is in the DMA header format (4-address |
|
* without QoS), and add head & tail padding when HW crypto is enabled. |
|
* |
|
* We have the following trailer padding requirements: |
|
* - WEP: 4 trailer bytes (ICV) |
|
* - TKIP: 12 trailer bytes (8 MIC + 4 ICV) |
|
* - CCMP: 8 trailer bytes (MIC) |
|
*/ |
|
data_pad = 0; |
|
if (key_conf != NULL) { |
|
head_pad = key_conf->iv_len; |
|
switch (key_conf->cipher) { |
|
case WLAN_CIPHER_SUITE_WEP40: |
|
case WLAN_CIPHER_SUITE_WEP104: |
|
data_pad = 4; |
|
break; |
|
case WLAN_CIPHER_SUITE_TKIP: |
|
data_pad = 12; |
|
break; |
|
case WLAN_CIPHER_SUITE_CCMP: |
|
data_pad = 8; |
|
break; |
|
} |
|
} |
|
mwl8k_add_dma_header(priv, skb, head_pad, data_pad); |
|
} |
|
|
|
/* |
|
* Packet reception for 88w8366/88w8764 AP firmware. |
|
*/ |
|
struct mwl8k_rxd_ap { |
|
__le16 pkt_len; |
|
__u8 sq2; |
|
__u8 rate; |
|
__le32 pkt_phys_addr; |
|
__le32 next_rxd_phys_addr; |
|
__le16 qos_control; |
|
__le16 htsig2; |
|
__le32 hw_rssi_info; |
|
__le32 hw_noise_floor_info; |
|
__u8 noise_floor; |
|
__u8 pad0[3]; |
|
__u8 rssi; |
|
__u8 rx_status; |
|
__u8 channel; |
|
__u8 rx_ctrl; |
|
} __packed; |
|
|
|
#define MWL8K_AP_RATE_INFO_MCS_FORMAT 0x80 |
|
#define MWL8K_AP_RATE_INFO_40MHZ 0x40 |
|
#define MWL8K_AP_RATE_INFO_RATEID(x) ((x) & 0x3f) |
|
|
|
#define MWL8K_AP_RX_CTRL_OWNED_BY_HOST 0x80 |
|
|
|
/* 8366/8764 AP rx_status bits */ |
|
#define MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK 0x80 |
|
#define MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF |
|
#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02 |
|
#define MWL8K_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04 |
|
#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08 |
|
|
|
static void mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr) |
|
{ |
|
struct mwl8k_rxd_ap *rxd = _rxd; |
|
|
|
rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr); |
|
rxd->rx_ctrl = MWL8K_AP_RX_CTRL_OWNED_BY_HOST; |
|
} |
|
|
|
static void mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len) |
|
{ |
|
struct mwl8k_rxd_ap *rxd = _rxd; |
|
|
|
rxd->pkt_len = cpu_to_le16(len); |
|
rxd->pkt_phys_addr = cpu_to_le32(addr); |
|
wmb(); |
|
rxd->rx_ctrl = 0; |
|
} |
|
|
|
static int |
|
mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status, |
|
__le16 *qos, s8 *noise) |
|
{ |
|
struct mwl8k_rxd_ap *rxd = _rxd; |
|
|
|
if (!(rxd->rx_ctrl & MWL8K_AP_RX_CTRL_OWNED_BY_HOST)) |
|
return -1; |
|
rmb(); |
|
|
|
memset(status, 0, sizeof(*status)); |
|
|
|
status->signal = -rxd->rssi; |
|
*noise = -rxd->noise_floor; |
|
|
|
if (rxd->rate & MWL8K_AP_RATE_INFO_MCS_FORMAT) { |
|
status->encoding = RX_ENC_HT; |
|
if (rxd->rate & MWL8K_AP_RATE_INFO_40MHZ) |
|
status->bw = RATE_INFO_BW_40; |
|
status->rate_idx = MWL8K_AP_RATE_INFO_RATEID(rxd->rate); |
|
} else { |
|
int i; |
|
|
|
for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) { |
|
if (mwl8k_rates_24[i].hw_value == rxd->rate) { |
|
status->rate_idx = i; |
|
break; |
|
} |
|
} |
|
} |
|
|
|
if (rxd->channel > 14) { |
|
status->band = NL80211_BAND_5GHZ; |
|
if (!(status->encoding == RX_ENC_HT) && |
|
status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET) |
|
status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET; |
|
} else { |
|
status->band = NL80211_BAND_2GHZ; |
|
} |
|
status->freq = ieee80211_channel_to_frequency(rxd->channel, |
|
status->band); |
|
|
|
*qos = rxd->qos_control; |
|
|
|
if ((rxd->rx_status != MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR) && |
|
(rxd->rx_status & MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK) && |
|
(rxd->rx_status & MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR)) |
|
status->flag |= RX_FLAG_MMIC_ERROR; |
|
|
|
return le16_to_cpu(rxd->pkt_len); |
|
} |
|
|
|
static struct rxd_ops rxd_ap_ops = { |
|
.rxd_size = sizeof(struct mwl8k_rxd_ap), |
|
.rxd_init = mwl8k_rxd_ap_init, |
|
.rxd_refill = mwl8k_rxd_ap_refill, |
|
.rxd_process = mwl8k_rxd_ap_process, |
|
}; |
|
|
|
/* |
|
* Packet reception for STA firmware. |
|
*/ |
|
struct mwl8k_rxd_sta { |
|
__le16 pkt_len; |
|
__u8 link_quality; |
|
__u8 noise_level; |
|
__le32 pkt_phys_addr; |
|
__le32 next_rxd_phys_addr; |
|
__le16 qos_control; |
|
__le16 rate_info; |
|
__le32 pad0[4]; |
|
__u8 rssi; |
|
__u8 channel; |
|
__le16 pad1; |
|
__u8 rx_ctrl; |
|
__u8 rx_status; |
|
__u8 pad2[2]; |
|
} __packed; |
|
|
|
#define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000 |
|
#define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3) |
|
#define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f) |
|
#define MWL8K_STA_RATE_INFO_40MHZ 0x0004 |
|
#define MWL8K_STA_RATE_INFO_SHORTGI 0x0002 |
|
#define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001 |
|
|
|
#define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02 |
|
#define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04 |
|
/* ICV=0 or MIC=1 */ |
|
#define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08 |
|
/* Key is uploaded only in failure case */ |
|
#define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30 |
|
|
|
static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr) |
|
{ |
|
struct mwl8k_rxd_sta *rxd = _rxd; |
|
|
|
rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr); |
|
rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST; |
|
} |
|
|
|
static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len) |
|
{ |
|
struct mwl8k_rxd_sta *rxd = _rxd; |
|
|
|
rxd->pkt_len = cpu_to_le16(len); |
|
rxd->pkt_phys_addr = cpu_to_le32(addr); |
|
wmb(); |
|
rxd->rx_ctrl = 0; |
|
} |
|
|
|
static int |
|
mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status, |
|
__le16 *qos, s8 *noise) |
|
{ |
|
struct mwl8k_rxd_sta *rxd = _rxd; |
|
u16 rate_info; |
|
|
|
if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST)) |
|
return -1; |
|
rmb(); |
|
|
|
rate_info = le16_to_cpu(rxd->rate_info); |
|
|
|
memset(status, 0, sizeof(*status)); |
|
|
|
status->signal = -rxd->rssi; |
|
*noise = -rxd->noise_level; |
|
status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info); |
|
status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info); |
|
|
|
if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE) |
|
status->enc_flags |= RX_ENC_FLAG_SHORTPRE; |
|
if (rate_info & MWL8K_STA_RATE_INFO_40MHZ) |
|
status->bw = RATE_INFO_BW_40; |
|
if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI) |
|
status->enc_flags |= RX_ENC_FLAG_SHORT_GI; |
|
if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT) |
|
status->encoding = RX_ENC_HT; |
|
|
|
if (rxd->channel > 14) { |
|
status->band = NL80211_BAND_5GHZ; |
|
if (!(status->encoding == RX_ENC_HT) && |
|
status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET) |
|
status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET; |
|
} else { |
|
status->band = NL80211_BAND_2GHZ; |
|
} |
|
status->freq = ieee80211_channel_to_frequency(rxd->channel, |
|
status->band); |
|
|
|
*qos = rxd->qos_control; |
|
if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) && |
|
(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE)) |
|
status->flag |= RX_FLAG_MMIC_ERROR; |
|
|
|
return le16_to_cpu(rxd->pkt_len); |
|
} |
|
|
|
static struct rxd_ops rxd_sta_ops = { |
|
.rxd_size = sizeof(struct mwl8k_rxd_sta), |
|
.rxd_init = mwl8k_rxd_sta_init, |
|
.rxd_refill = mwl8k_rxd_sta_refill, |
|
.rxd_process = mwl8k_rxd_sta_process, |
|
}; |
|
|
|
|
|
#define MWL8K_RX_DESCS 256 |
|
#define MWL8K_RX_MAXSZ 3800 |
|
|
|
static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_rx_queue *rxq = priv->rxq + index; |
|
int size; |
|
int i; |
|
|
|
rxq->rxd_count = 0; |
|
rxq->head = 0; |
|
rxq->tail = 0; |
|
|
|
size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size; |
|
|
|
rxq->rxd = dma_alloc_coherent(&priv->pdev->dev, size, &rxq->rxd_dma, |
|
GFP_KERNEL); |
|
if (rxq->rxd == NULL) { |
|
wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n"); |
|
return -ENOMEM; |
|
} |
|
|
|
rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL); |
|
if (rxq->buf == NULL) { |
|
dma_free_coherent(&priv->pdev->dev, size, rxq->rxd, |
|
rxq->rxd_dma); |
|
return -ENOMEM; |
|
} |
|
|
|
for (i = 0; i < MWL8K_RX_DESCS; i++) { |
|
int desc_size; |
|
void *rxd; |
|
int nexti; |
|
dma_addr_t next_dma_addr; |
|
|
|
desc_size = priv->rxd_ops->rxd_size; |
|
rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size); |
|
|
|
nexti = i + 1; |
|
if (nexti == MWL8K_RX_DESCS) |
|
nexti = 0; |
|
next_dma_addr = rxq->rxd_dma + (nexti * desc_size); |
|
|
|
priv->rxd_ops->rxd_init(rxd, next_dma_addr); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int rxq_refill(struct ieee80211_hw *hw, int index, int limit) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_rx_queue *rxq = priv->rxq + index; |
|
int refilled = 0; |
|
|
|
while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) { |
|
struct sk_buff *skb; |
|
dma_addr_t addr; |
|
int rx; |
|
void *rxd; |
|
|
|
skb = dev_alloc_skb(MWL8K_RX_MAXSZ); |
|
if (skb == NULL) |
|
break; |
|
|
|
addr = dma_map_single(&priv->pdev->dev, skb->data, |
|
MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); |
|
|
|
rxq->rxd_count++; |
|
rx = rxq->tail++; |
|
if (rxq->tail == MWL8K_RX_DESCS) |
|
rxq->tail = 0; |
|
rxq->buf[rx].skb = skb; |
|
dma_unmap_addr_set(&rxq->buf[rx], dma, addr); |
|
|
|
rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size); |
|
priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ); |
|
|
|
refilled++; |
|
} |
|
|
|
return refilled; |
|
} |
|
|
|
/* Must be called only when the card's reception is completely halted */ |
|
static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_rx_queue *rxq = priv->rxq + index; |
|
int i; |
|
|
|
if (rxq->rxd == NULL) |
|
return; |
|
|
|
for (i = 0; i < MWL8K_RX_DESCS; i++) { |
|
if (rxq->buf[i].skb != NULL) { |
|
dma_unmap_single(&priv->pdev->dev, |
|
dma_unmap_addr(&rxq->buf[i], dma), |
|
MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); |
|
dma_unmap_addr_set(&rxq->buf[i], dma, 0); |
|
|
|
kfree_skb(rxq->buf[i].skb); |
|
rxq->buf[i].skb = NULL; |
|
} |
|
} |
|
|
|
kfree(rxq->buf); |
|
rxq->buf = NULL; |
|
|
|
dma_free_coherent(&priv->pdev->dev, |
|
MWL8K_RX_DESCS * priv->rxd_ops->rxd_size, rxq->rxd, |
|
rxq->rxd_dma); |
|
rxq->rxd = NULL; |
|
} |
|
|
|
|
|
/* |
|
* Scan a list of BSSIDs to process for finalize join. |
|
* Allows for extension to process multiple BSSIDs. |
|
*/ |
|
static inline int |
|
mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh) |
|
{ |
|
return priv->capture_beacon && |
|
ieee80211_is_beacon(wh->frame_control) && |
|
ether_addr_equal_64bits(wh->addr3, priv->capture_bssid); |
|
} |
|
|
|
static inline void mwl8k_save_beacon(struct ieee80211_hw *hw, |
|
struct sk_buff *skb) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
|
|
priv->capture_beacon = false; |
|
eth_zero_addr(priv->capture_bssid); |
|
|
|
/* |
|
* Use GFP_ATOMIC as rxq_process is called from |
|
* the primary interrupt handler, memory allocation call |
|
* must not sleep. |
|
*/ |
|
priv->beacon_skb = skb_copy(skb, GFP_ATOMIC); |
|
if (priv->beacon_skb != NULL) |
|
ieee80211_queue_work(hw, &priv->finalize_join_worker); |
|
} |
|
|
|
static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list, |
|
u8 *bssid) |
|
{ |
|
struct mwl8k_vif *mwl8k_vif; |
|
|
|
list_for_each_entry(mwl8k_vif, |
|
vif_list, list) { |
|
if (memcmp(bssid, mwl8k_vif->bssid, |
|
ETH_ALEN) == 0) |
|
return mwl8k_vif; |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
static int rxq_process(struct ieee80211_hw *hw, int index, int limit) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_vif *mwl8k_vif = NULL; |
|
struct mwl8k_rx_queue *rxq = priv->rxq + index; |
|
int processed; |
|
|
|
processed = 0; |
|
while (rxq->rxd_count && limit--) { |
|
struct sk_buff *skb; |
|
void *rxd; |
|
int pkt_len; |
|
struct ieee80211_rx_status status; |
|
struct ieee80211_hdr *wh; |
|
__le16 qos; |
|
|
|
skb = rxq->buf[rxq->head].skb; |
|
if (skb == NULL) |
|
break; |
|
|
|
rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size); |
|
|
|
pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos, |
|
&priv->noise); |
|
if (pkt_len < 0) |
|
break; |
|
|
|
rxq->buf[rxq->head].skb = NULL; |
|
|
|
dma_unmap_single(&priv->pdev->dev, |
|
dma_unmap_addr(&rxq->buf[rxq->head], dma), |
|
MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); |
|
dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0); |
|
|
|
rxq->head++; |
|
if (rxq->head == MWL8K_RX_DESCS) |
|
rxq->head = 0; |
|
|
|
rxq->rxd_count--; |
|
|
|
wh = &((struct mwl8k_dma_data *)skb->data)->wh; |
|
|
|
/* |
|
* Check for a pending join operation. Save a |
|
* copy of the beacon and schedule a tasklet to |
|
* send a FINALIZE_JOIN command to the firmware. |
|
*/ |
|
if (mwl8k_capture_bssid(priv, (void *)skb->data)) |
|
mwl8k_save_beacon(hw, skb); |
|
|
|
if (ieee80211_has_protected(wh->frame_control)) { |
|
|
|
/* Check if hw crypto has been enabled for |
|
* this bss. If yes, set the status flags |
|
* accordingly |
|
*/ |
|
mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list, |
|
wh->addr1); |
|
|
|
if (mwl8k_vif != NULL && |
|
mwl8k_vif->is_hw_crypto_enabled) { |
|
/* |
|
* When MMIC ERROR is encountered |
|
* by the firmware, payload is |
|
* dropped and only 32 bytes of |
|
* mwl8k Firmware header is sent |
|
* to the host. |
|
* |
|
* We need to add four bytes of |
|
* key information. In it |
|
* MAC80211 expects keyidx set to |
|
* 0 for triggering Counter |
|
* Measure of MMIC failure. |
|
*/ |
|
if (status.flag & RX_FLAG_MMIC_ERROR) { |
|
struct mwl8k_dma_data *tr; |
|
tr = (struct mwl8k_dma_data *)skb->data; |
|
memset((void *)&(tr->data), 0, 4); |
|
pkt_len += 4; |
|
} |
|
|
|
if (!ieee80211_is_auth(wh->frame_control)) |
|
status.flag |= RX_FLAG_IV_STRIPPED | |
|
RX_FLAG_DECRYPTED | |
|
RX_FLAG_MMIC_STRIPPED; |
|
} |
|
} |
|
|
|
skb_put(skb, pkt_len); |
|
mwl8k_remove_dma_header(skb, qos); |
|
memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status)); |
|
ieee80211_rx_irqsafe(hw, skb); |
|
|
|
processed++; |
|
} |
|
|
|
return processed; |
|
} |
|
|
|
|
|
/* |
|
* Packet transmission. |
|
*/ |
|
|
|
#define MWL8K_TXD_STATUS_OK 0x00000001 |
|
#define MWL8K_TXD_STATUS_OK_RETRY 0x00000002 |
|
#define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004 |
|
#define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008 |
|
#define MWL8K_TXD_STATUS_FW_OWNED 0x80000000 |
|
|
|
#define MWL8K_QOS_QLEN_UNSPEC 0xff00 |
|
#define MWL8K_QOS_ACK_POLICY_MASK 0x0060 |
|
#define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000 |
|
#define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060 |
|
#define MWL8K_QOS_EOSP 0x0010 |
|
|
|
struct mwl8k_tx_desc { |
|
__le32 status; |
|
__u8 data_rate; |
|
__u8 tx_priority; |
|
__le16 qos_control; |
|
__le32 pkt_phys_addr; |
|
__le16 pkt_len; |
|
__u8 dest_MAC_addr[ETH_ALEN]; |
|
__le32 next_txd_phys_addr; |
|
__le32 timestamp; |
|
__le16 rate_info; |
|
__u8 peer_id; |
|
__u8 tx_frag_cnt; |
|
} __packed; |
|
|
|
#define MWL8K_TX_DESCS 128 |
|
|
|
static int mwl8k_txq_init(struct ieee80211_hw *hw, int index) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_tx_queue *txq = priv->txq + index; |
|
int size; |
|
int i; |
|
|
|
txq->len = 0; |
|
txq->head = 0; |
|
txq->tail = 0; |
|
|
|
size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc); |
|
|
|
txq->txd = dma_alloc_coherent(&priv->pdev->dev, size, &txq->txd_dma, |
|
GFP_KERNEL); |
|
if (txq->txd == NULL) { |
|
wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n"); |
|
return -ENOMEM; |
|
} |
|
|
|
txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL); |
|
if (txq->skb == NULL) { |
|
dma_free_coherent(&priv->pdev->dev, size, txq->txd, |
|
txq->txd_dma); |
|
txq->txd = NULL; |
|
return -ENOMEM; |
|
} |
|
|
|
for (i = 0; i < MWL8K_TX_DESCS; i++) { |
|
struct mwl8k_tx_desc *tx_desc; |
|
int nexti; |
|
|
|
tx_desc = txq->txd + i; |
|
nexti = (i + 1) % MWL8K_TX_DESCS; |
|
|
|
tx_desc->status = 0; |
|
tx_desc->next_txd_phys_addr = |
|
cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc)); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static inline void mwl8k_tx_start(struct mwl8k_priv *priv) |
|
{ |
|
iowrite32(MWL8K_H2A_INT_PPA_READY, |
|
priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); |
|
iowrite32(MWL8K_H2A_INT_DUMMY, |
|
priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); |
|
ioread32(priv->regs + MWL8K_HIU_INT_CODE); |
|
} |
|
|
|
static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
int i; |
|
|
|
for (i = 0; i < mwl8k_tx_queues(priv); i++) { |
|
struct mwl8k_tx_queue *txq = priv->txq + i; |
|
int fw_owned = 0; |
|
int drv_owned = 0; |
|
int unused = 0; |
|
int desc; |
|
|
|
for (desc = 0; desc < MWL8K_TX_DESCS; desc++) { |
|
struct mwl8k_tx_desc *tx_desc = txq->txd + desc; |
|
u32 status; |
|
|
|
status = le32_to_cpu(tx_desc->status); |
|
if (status & MWL8K_TXD_STATUS_FW_OWNED) |
|
fw_owned++; |
|
else |
|
drv_owned++; |
|
|
|
if (tx_desc->pkt_len == 0) |
|
unused++; |
|
} |
|
|
|
wiphy_err(hw->wiphy, |
|
"txq[%d] len=%d head=%d tail=%d " |
|
"fw_owned=%d drv_owned=%d unused=%d\n", |
|
i, |
|
txq->len, txq->head, txq->tail, |
|
fw_owned, drv_owned, unused); |
|
} |
|
} |
|
|
|
/* |
|
* Must be called with priv->fw_mutex held and tx queues stopped. |
|
*/ |
|
#define MWL8K_TX_WAIT_TIMEOUT_MS 5000 |
|
|
|
static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
DECLARE_COMPLETION_ONSTACK(tx_wait); |
|
int retry; |
|
int rc; |
|
|
|
might_sleep(); |
|
|
|
/* Since fw restart is in progress, allow only the firmware |
|
* commands from the restart code and block the other |
|
* commands since they are going to fail in any case since |
|
* the firmware has crashed |
|
*/ |
|
if (priv->hw_restart_in_progress) { |
|
if (priv->hw_restart_owner == current) |
|
return 0; |
|
else |
|
return -EBUSY; |
|
} |
|
|
|
if (atomic_read(&priv->watchdog_event_pending)) |
|
return 0; |
|
|
|
/* |
|
* The TX queues are stopped at this point, so this test |
|
* doesn't need to take ->tx_lock. |
|
*/ |
|
if (!priv->pending_tx_pkts) |
|
return 0; |
|
|
|
retry = 1; |
|
rc = 0; |
|
|
|
spin_lock_bh(&priv->tx_lock); |
|
priv->tx_wait = &tx_wait; |
|
while (!rc) { |
|
int oldcount; |
|
unsigned long timeout; |
|
|
|
oldcount = priv->pending_tx_pkts; |
|
|
|
spin_unlock_bh(&priv->tx_lock); |
|
timeout = wait_for_completion_timeout(&tx_wait, |
|
msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS)); |
|
|
|
if (atomic_read(&priv->watchdog_event_pending)) { |
|
spin_lock_bh(&priv->tx_lock); |
|
priv->tx_wait = NULL; |
|
spin_unlock_bh(&priv->tx_lock); |
|
return 0; |
|
} |
|
|
|
spin_lock_bh(&priv->tx_lock); |
|
|
|
if (timeout || !priv->pending_tx_pkts) { |
|
WARN_ON(priv->pending_tx_pkts); |
|
if (retry) |
|
wiphy_notice(hw->wiphy, "tx rings drained\n"); |
|
break; |
|
} |
|
|
|
if (retry) { |
|
mwl8k_tx_start(priv); |
|
retry = 0; |
|
continue; |
|
} |
|
|
|
if (priv->pending_tx_pkts < oldcount) { |
|
wiphy_notice(hw->wiphy, |
|
"waiting for tx rings to drain (%d -> %d pkts)\n", |
|
oldcount, priv->pending_tx_pkts); |
|
retry = 1; |
|
continue; |
|
} |
|
|
|
priv->tx_wait = NULL; |
|
|
|
wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n", |
|
MWL8K_TX_WAIT_TIMEOUT_MS); |
|
mwl8k_dump_tx_rings(hw); |
|
priv->hw_restart_in_progress = true; |
|
ieee80211_queue_work(hw, &priv->fw_reload); |
|
|
|
rc = -ETIMEDOUT; |
|
} |
|
priv->tx_wait = NULL; |
|
spin_unlock_bh(&priv->tx_lock); |
|
|
|
return rc; |
|
} |
|
|
|
#define MWL8K_TXD_SUCCESS(status) \ |
|
((status) & (MWL8K_TXD_STATUS_OK | \ |
|
MWL8K_TXD_STATUS_OK_RETRY | \ |
|
MWL8K_TXD_STATUS_OK_MORE_RETRY)) |
|
|
|
static int mwl8k_tid_queue_mapping(u8 tid) |
|
{ |
|
BUG_ON(tid > 7); |
|
|
|
switch (tid) { |
|
case 0: |
|
case 3: |
|
return IEEE80211_AC_BE; |
|
case 1: |
|
case 2: |
|
return IEEE80211_AC_BK; |
|
case 4: |
|
case 5: |
|
return IEEE80211_AC_VI; |
|
case 6: |
|
case 7: |
|
return IEEE80211_AC_VO; |
|
default: |
|
return -1; |
|
} |
|
} |
|
|
|
/* The firmware will fill in the rate information |
|
* for each packet that gets queued in the hardware |
|
* and these macros will interpret that info. |
|
*/ |
|
|
|
#define RI_FORMAT(a) (a & 0x0001) |
|
#define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3) |
|
|
|
static int |
|
mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_tx_queue *txq = priv->txq + index; |
|
int processed; |
|
|
|
processed = 0; |
|
while (txq->len > 0 && limit--) { |
|
int tx; |
|
struct mwl8k_tx_desc *tx_desc; |
|
unsigned long addr; |
|
int size; |
|
struct sk_buff *skb; |
|
struct ieee80211_tx_info *info; |
|
u32 status; |
|
struct ieee80211_sta *sta; |
|
struct mwl8k_sta *sta_info = NULL; |
|
u16 rate_info; |
|
struct ieee80211_hdr *wh; |
|
|
|
tx = txq->head; |
|
tx_desc = txq->txd + tx; |
|
|
|
status = le32_to_cpu(tx_desc->status); |
|
|
|
if (status & MWL8K_TXD_STATUS_FW_OWNED) { |
|
if (!force) |
|
break; |
|
tx_desc->status &= |
|
~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED); |
|
} |
|
|
|
txq->head = (tx + 1) % MWL8K_TX_DESCS; |
|
BUG_ON(txq->len == 0); |
|
txq->len--; |
|
priv->pending_tx_pkts--; |
|
|
|
addr = le32_to_cpu(tx_desc->pkt_phys_addr); |
|
size = le16_to_cpu(tx_desc->pkt_len); |
|
skb = txq->skb[tx]; |
|
txq->skb[tx] = NULL; |
|
|
|
BUG_ON(skb == NULL); |
|
dma_unmap_single(&priv->pdev->dev, addr, size, DMA_TO_DEVICE); |
|
|
|
mwl8k_remove_dma_header(skb, tx_desc->qos_control); |
|
|
|
wh = (struct ieee80211_hdr *) skb->data; |
|
|
|
/* Mark descriptor as unused */ |
|
tx_desc->pkt_phys_addr = 0; |
|
tx_desc->pkt_len = 0; |
|
|
|
info = IEEE80211_SKB_CB(skb); |
|
if (ieee80211_is_data(wh->frame_control)) { |
|
rcu_read_lock(); |
|
sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1, |
|
wh->addr2); |
|
if (sta) { |
|
sta_info = MWL8K_STA(sta); |
|
BUG_ON(sta_info == NULL); |
|
rate_info = le16_to_cpu(tx_desc->rate_info); |
|
/* If rate is < 6.5 Mpbs for an ht station |
|
* do not form an ampdu. If the station is a |
|
* legacy station (format = 0), do not form an |
|
* ampdu |
|
*/ |
|
if (RI_RATE_ID_MCS(rate_info) < 1 || |
|
RI_FORMAT(rate_info) == 0) { |
|
sta_info->is_ampdu_allowed = false; |
|
} else { |
|
sta_info->is_ampdu_allowed = true; |
|
} |
|
} |
|
rcu_read_unlock(); |
|
} |
|
|
|
ieee80211_tx_info_clear_status(info); |
|
|
|
/* Rate control is happening in the firmware. |
|
* Ensure no tx rate is being reported. |
|
*/ |
|
info->status.rates[0].idx = -1; |
|
info->status.rates[0].count = 1; |
|
|
|
if (MWL8K_TXD_SUCCESS(status)) |
|
info->flags |= IEEE80211_TX_STAT_ACK; |
|
|
|
ieee80211_tx_status_irqsafe(hw, skb); |
|
|
|
processed++; |
|
} |
|
|
|
return processed; |
|
} |
|
|
|
/* must be called only when the card's transmit is completely halted */ |
|
static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_tx_queue *txq = priv->txq + index; |
|
|
|
if (txq->txd == NULL) |
|
return; |
|
|
|
mwl8k_txq_reclaim(hw, index, INT_MAX, 1); |
|
|
|
kfree(txq->skb); |
|
txq->skb = NULL; |
|
|
|
dma_free_coherent(&priv->pdev->dev, |
|
MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc), |
|
txq->txd, txq->txd_dma); |
|
txq->txd = NULL; |
|
} |
|
|
|
/* caller must hold priv->stream_lock when calling the stream functions */ |
|
static struct mwl8k_ampdu_stream * |
|
mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid) |
|
{ |
|
struct mwl8k_ampdu_stream *stream; |
|
struct mwl8k_priv *priv = hw->priv; |
|
int i; |
|
|
|
for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { |
|
stream = &priv->ampdu[i]; |
|
if (stream->state == AMPDU_NO_STREAM) { |
|
stream->sta = sta; |
|
stream->state = AMPDU_STREAM_NEW; |
|
stream->tid = tid; |
|
stream->idx = i; |
|
wiphy_debug(hw->wiphy, "Added a new stream for %pM %d", |
|
sta->addr, tid); |
|
return stream; |
|
} |
|
} |
|
return NULL; |
|
} |
|
|
|
static int |
|
mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) |
|
{ |
|
int ret; |
|
|
|
/* if the stream has already been started, don't start it again */ |
|
if (stream->state != AMPDU_STREAM_NEW) |
|
return 0; |
|
ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0); |
|
if (ret) |
|
wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: " |
|
"%d\n", stream->sta->addr, stream->tid, ret); |
|
else |
|
wiphy_debug(hw->wiphy, "Started stream for %pM %d\n", |
|
stream->sta->addr, stream->tid); |
|
return ret; |
|
} |
|
|
|
static void |
|
mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) |
|
{ |
|
wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr, |
|
stream->tid); |
|
memset(stream, 0, sizeof(*stream)); |
|
} |
|
|
|
static struct mwl8k_ampdu_stream * |
|
mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
int i; |
|
|
|
for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { |
|
struct mwl8k_ampdu_stream *stream; |
|
stream = &priv->ampdu[i]; |
|
if (stream->state == AMPDU_NO_STREAM) |
|
continue; |
|
if (!memcmp(stream->sta->addr, addr, ETH_ALEN) && |
|
stream->tid == tid) |
|
return stream; |
|
} |
|
return NULL; |
|
} |
|
|
|
#define MWL8K_AMPDU_PACKET_THRESHOLD 64 |
|
static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid) |
|
{ |
|
struct mwl8k_sta *sta_info = MWL8K_STA(sta); |
|
struct tx_traffic_info *tx_stats; |
|
|
|
BUG_ON(tid >= MWL8K_MAX_TID); |
|
tx_stats = &sta_info->tx_stats[tid]; |
|
|
|
return sta_info->is_ampdu_allowed && |
|
tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD; |
|
} |
|
|
|
static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid) |
|
{ |
|
struct mwl8k_sta *sta_info = MWL8K_STA(sta); |
|
struct tx_traffic_info *tx_stats; |
|
|
|
BUG_ON(tid >= MWL8K_MAX_TID); |
|
tx_stats = &sta_info->tx_stats[tid]; |
|
|
|
if (tx_stats->start_time == 0) |
|
tx_stats->start_time = jiffies; |
|
|
|
/* reset the packet count after each second elapses. If the number of |
|
* packets ever exceeds the ampdu_min_traffic threshold, we will allow |
|
* an ampdu stream to be started. |
|
*/ |
|
if (jiffies - tx_stats->start_time > HZ) { |
|
tx_stats->pkts = 0; |
|
tx_stats->start_time = 0; |
|
} else |
|
tx_stats->pkts++; |
|
} |
|
|
|
/* The hardware ampdu queues start from 5. |
|
* txpriorities for ampdu queues are |
|
* 5 6 7 0 1 2 3 4 ie., queue 5 is highest |
|
* and queue 3 is lowest (queue 4 is reserved) |
|
*/ |
|
#define BA_QUEUE 5 |
|
|
|
static void |
|
mwl8k_txq_xmit(struct ieee80211_hw *hw, |
|
int index, |
|
struct ieee80211_sta *sta, |
|
struct sk_buff *skb) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct ieee80211_tx_info *tx_info; |
|
struct mwl8k_vif *mwl8k_vif; |
|
struct ieee80211_hdr *wh; |
|
struct mwl8k_tx_queue *txq; |
|
struct mwl8k_tx_desc *tx; |
|
dma_addr_t dma; |
|
u32 txstatus; |
|
u8 txdatarate; |
|
u16 qos; |
|
int txpriority; |
|
u8 tid = 0; |
|
struct mwl8k_ampdu_stream *stream = NULL; |
|
bool start_ba_session = false; |
|
bool mgmtframe = false; |
|
struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; |
|
bool eapol_frame = false; |
|
|
|
wh = (struct ieee80211_hdr *)skb->data; |
|
if (ieee80211_is_data_qos(wh->frame_control)) |
|
qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh))); |
|
else |
|
qos = 0; |
|
|
|
if (skb->protocol == cpu_to_be16(ETH_P_PAE)) |
|
eapol_frame = true; |
|
|
|
if (ieee80211_is_mgmt(wh->frame_control)) |
|
mgmtframe = true; |
|
|
|
if (priv->ap_fw) |
|
mwl8k_encapsulate_tx_frame(priv, skb); |
|
else |
|
mwl8k_add_dma_header(priv, skb, 0, 0); |
|
|
|
wh = &((struct mwl8k_dma_data *)skb->data)->wh; |
|
|
|
tx_info = IEEE80211_SKB_CB(skb); |
|
mwl8k_vif = MWL8K_VIF(tx_info->control.vif); |
|
|
|
if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { |
|
wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); |
|
wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno); |
|
mwl8k_vif->seqno += 0x10; |
|
} |
|
|
|
/* Setup firmware control bit fields for each frame type. */ |
|
txstatus = 0; |
|
txdatarate = 0; |
|
if (ieee80211_is_mgmt(wh->frame_control) || |
|
ieee80211_is_ctl(wh->frame_control)) { |
|
txdatarate = 0; |
|
qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP; |
|
} else if (ieee80211_is_data(wh->frame_control)) { |
|
txdatarate = 1; |
|
if (is_multicast_ether_addr(wh->addr1)) |
|
txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX; |
|
|
|
qos &= ~MWL8K_QOS_ACK_POLICY_MASK; |
|
if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) |
|
qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK; |
|
else |
|
qos |= MWL8K_QOS_ACK_POLICY_NORMAL; |
|
} |
|
|
|
/* Queue ADDBA request in the respective data queue. While setting up |
|
* the ampdu stream, mac80211 queues further packets for that |
|
* particular ra/tid pair. However, packets piled up in the hardware |
|
* for that ra/tid pair will still go out. ADDBA request and the |
|
* related data packets going out from different queues asynchronously |
|
* will cause a shift in the receiver window which might result in |
|
* ampdu packets getting dropped at the receiver after the stream has |
|
* been setup. |
|
*/ |
|
if (unlikely(ieee80211_is_action(wh->frame_control) && |
|
mgmt->u.action.category == WLAN_CATEGORY_BACK && |
|
mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ && |
|
priv->ap_fw)) { |
|
u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); |
|
tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; |
|
index = mwl8k_tid_queue_mapping(tid); |
|
} |
|
|
|
txpriority = index; |
|
|
|
if (priv->ap_fw && sta && sta->ht_cap.ht_supported && !eapol_frame && |
|
ieee80211_is_data_qos(wh->frame_control)) { |
|
tid = qos & 0xf; |
|
mwl8k_tx_count_packet(sta, tid); |
|
spin_lock(&priv->stream_lock); |
|
stream = mwl8k_lookup_stream(hw, sta->addr, tid); |
|
if (stream != NULL) { |
|
if (stream->state == AMPDU_STREAM_ACTIVE) { |
|
WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK)); |
|
txpriority = (BA_QUEUE + stream->idx) % |
|
TOTAL_HW_TX_QUEUES; |
|
if (stream->idx <= 1) |
|
index = stream->idx + |
|
MWL8K_TX_WMM_QUEUES; |
|
|
|
} else if (stream->state == AMPDU_STREAM_NEW) { |
|
/* We get here if the driver sends us packets |
|
* after we've initiated a stream, but before |
|
* our ampdu_action routine has been called |
|
* with IEEE80211_AMPDU_TX_START to get the SSN |
|
* for the ADDBA request. So this packet can |
|
* go out with no risk of sequence number |
|
* mismatch. No special handling is required. |
|
*/ |
|
} else { |
|
/* Drop packets that would go out after the |
|
* ADDBA request was sent but before the ADDBA |
|
* response is received. If we don't do this, |
|
* the recipient would probably receive it |
|
* after the ADDBA request with SSN 0. This |
|
* will cause the recipient's BA receive window |
|
* to shift, which would cause the subsequent |
|
* packets in the BA stream to be discarded. |
|
* mac80211 queues our packets for us in this |
|
* case, so this is really just a safety check. |
|
*/ |
|
wiphy_warn(hw->wiphy, |
|
"Cannot send packet while ADDBA " |
|
"dialog is underway.\n"); |
|
spin_unlock(&priv->stream_lock); |
|
dev_kfree_skb(skb); |
|
return; |
|
} |
|
} else { |
|
/* Defer calling mwl8k_start_stream so that the current |
|
* skb can go out before the ADDBA request. This |
|
* prevents sequence number mismatch at the recepient |
|
* as described above. |
|
*/ |
|
if (mwl8k_ampdu_allowed(sta, tid)) { |
|
stream = mwl8k_add_stream(hw, sta, tid); |
|
if (stream != NULL) |
|
start_ba_session = true; |
|
} |
|
} |
|
spin_unlock(&priv->stream_lock); |
|
} else { |
|
qos &= ~MWL8K_QOS_ACK_POLICY_MASK; |
|
qos |= MWL8K_QOS_ACK_POLICY_NORMAL; |
|
} |
|
|
|
dma = dma_map_single(&priv->pdev->dev, skb->data, skb->len, |
|
DMA_TO_DEVICE); |
|
|
|
if (dma_mapping_error(&priv->pdev->dev, dma)) { |
|
wiphy_debug(hw->wiphy, |
|
"failed to dma map skb, dropping TX frame.\n"); |
|
if (start_ba_session) { |
|
spin_lock(&priv->stream_lock); |
|
mwl8k_remove_stream(hw, stream); |
|
spin_unlock(&priv->stream_lock); |
|
} |
|
dev_kfree_skb(skb); |
|
return; |
|
} |
|
|
|
spin_lock_bh(&priv->tx_lock); |
|
|
|
txq = priv->txq + index; |
|
|
|
/* Mgmt frames that go out frequently are probe |
|
* responses. Other mgmt frames got out relatively |
|
* infrequently. Hence reserve 2 buffers so that |
|
* other mgmt frames do not get dropped due to an |
|
* already queued probe response in one of the |
|
* reserved buffers. |
|
*/ |
|
|
|
if (txq->len >= MWL8K_TX_DESCS - 2) { |
|
if (!mgmtframe || txq->len == MWL8K_TX_DESCS) { |
|
if (start_ba_session) { |
|
spin_lock(&priv->stream_lock); |
|
mwl8k_remove_stream(hw, stream); |
|
spin_unlock(&priv->stream_lock); |
|
} |
|
mwl8k_tx_start(priv); |
|
spin_unlock_bh(&priv->tx_lock); |
|
dma_unmap_single(&priv->pdev->dev, dma, skb->len, |
|
DMA_TO_DEVICE); |
|
dev_kfree_skb(skb); |
|
return; |
|
} |
|
} |
|
|
|
BUG_ON(txq->skb[txq->tail] != NULL); |
|
txq->skb[txq->tail] = skb; |
|
|
|
tx = txq->txd + txq->tail; |
|
tx->data_rate = txdatarate; |
|
tx->tx_priority = txpriority; |
|
tx->qos_control = cpu_to_le16(qos); |
|
tx->pkt_phys_addr = cpu_to_le32(dma); |
|
tx->pkt_len = cpu_to_le16(skb->len); |
|
tx->rate_info = 0; |
|
if (!priv->ap_fw && sta != NULL) |
|
tx->peer_id = MWL8K_STA(sta)->peer_id; |
|
else |
|
tx->peer_id = 0; |
|
|
|
if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame) |
|
tx->timestamp = cpu_to_le32(ioread32(priv->regs + |
|
MWL8K_HW_TIMER_REGISTER)); |
|
else |
|
tx->timestamp = 0; |
|
|
|
wmb(); |
|
tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus); |
|
|
|
txq->len++; |
|
priv->pending_tx_pkts++; |
|
|
|
txq->tail++; |
|
if (txq->tail == MWL8K_TX_DESCS) |
|
txq->tail = 0; |
|
|
|
mwl8k_tx_start(priv); |
|
|
|
spin_unlock_bh(&priv->tx_lock); |
|
|
|
/* Initiate the ampdu session here */ |
|
if (start_ba_session) { |
|
spin_lock(&priv->stream_lock); |
|
if (mwl8k_start_stream(hw, stream)) |
|
mwl8k_remove_stream(hw, stream); |
|
spin_unlock(&priv->stream_lock); |
|
} |
|
} |
|
|
|
|
|
/* |
|
* Firmware access. |
|
* |
|
* We have the following requirements for issuing firmware commands: |
|
* - Some commands require that the packet transmit path is idle when |
|
* the command is issued. (For simplicity, we'll just quiesce the |
|
* transmit path for every command.) |
|
* - There are certain sequences of commands that need to be issued to |
|
* the hardware sequentially, with no other intervening commands. |
|
* |
|
* This leads to an implementation of a "firmware lock" as a mutex that |
|
* can be taken recursively, and which is taken by both the low-level |
|
* command submission function (mwl8k_post_cmd) as well as any users of |
|
* that function that require issuing of an atomic sequence of commands, |
|
* and quiesces the transmit path whenever it's taken. |
|
*/ |
|
static int mwl8k_fw_lock(struct ieee80211_hw *hw) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
|
|
if (priv->fw_mutex_owner != current) { |
|
int rc; |
|
|
|
mutex_lock(&priv->fw_mutex); |
|
ieee80211_stop_queues(hw); |
|
|
|
rc = mwl8k_tx_wait_empty(hw); |
|
if (rc) { |
|
if (!priv->hw_restart_in_progress) |
|
ieee80211_wake_queues(hw); |
|
|
|
mutex_unlock(&priv->fw_mutex); |
|
|
|
return rc; |
|
} |
|
|
|
priv->fw_mutex_owner = current; |
|
} |
|
|
|
priv->fw_mutex_depth++; |
|
|
|
return 0; |
|
} |
|
|
|
static void mwl8k_fw_unlock(struct ieee80211_hw *hw) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
|
|
if (!--priv->fw_mutex_depth) { |
|
if (!priv->hw_restart_in_progress) |
|
ieee80211_wake_queues(hw); |
|
|
|
priv->fw_mutex_owner = NULL; |
|
mutex_unlock(&priv->fw_mutex); |
|
} |
|
} |
|
|
|
static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, |
|
u32 bitmap); |
|
|
|
/* |
|
* Command processing. |
|
*/ |
|
|
|
/* Timeout firmware commands after 10s */ |
|
#define MWL8K_CMD_TIMEOUT_MS 10000 |
|
|
|
static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd) |
|
{ |
|
DECLARE_COMPLETION_ONSTACK(cmd_wait); |
|
struct mwl8k_priv *priv = hw->priv; |
|
void __iomem *regs = priv->regs; |
|
dma_addr_t dma_addr; |
|
unsigned int dma_size; |
|
int rc; |
|
unsigned long timeout = 0; |
|
u8 buf[32]; |
|
u32 bitmap = 0; |
|
|
|
wiphy_dbg(hw->wiphy, "Posting %s [%d]\n", |
|
mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid); |
|
|
|
/* Before posting firmware commands that could change the hardware |
|
* characteristics, make sure that all BSSes are stopped temporary. |
|
* Enable these stopped BSSes after completion of the commands |
|
*/ |
|
|
|
rc = mwl8k_fw_lock(hw); |
|
if (rc) |
|
return rc; |
|
|
|
if (priv->ap_fw && priv->running_bsses) { |
|
switch (le16_to_cpu(cmd->code)) { |
|
case MWL8K_CMD_SET_RF_CHANNEL: |
|
case MWL8K_CMD_RADIO_CONTROL: |
|
case MWL8K_CMD_RF_TX_POWER: |
|
case MWL8K_CMD_TX_POWER: |
|
case MWL8K_CMD_RF_ANTENNA: |
|
case MWL8K_CMD_RTS_THRESHOLD: |
|
case MWL8K_CMD_MIMO_CONFIG: |
|
bitmap = priv->running_bsses; |
|
mwl8k_enable_bsses(hw, false, bitmap); |
|
break; |
|
} |
|
} |
|
|
|
cmd->result = (__force __le16) 0xffff; |
|
dma_size = le16_to_cpu(cmd->length); |
|
dma_addr = dma_map_single(&priv->pdev->dev, cmd, dma_size, |
|
DMA_BIDIRECTIONAL); |
|
if (dma_mapping_error(&priv->pdev->dev, dma_addr)) { |
|
rc = -ENOMEM; |
|
goto exit; |
|
} |
|
|
|
priv->hostcmd_wait = &cmd_wait; |
|
iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); |
|
iowrite32(MWL8K_H2A_INT_DOORBELL, |
|
regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); |
|
iowrite32(MWL8K_H2A_INT_DUMMY, |
|
regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); |
|
|
|
timeout = wait_for_completion_timeout(&cmd_wait, |
|
msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS)); |
|
|
|
priv->hostcmd_wait = NULL; |
|
|
|
|
|
dma_unmap_single(&priv->pdev->dev, dma_addr, dma_size, |
|
DMA_BIDIRECTIONAL); |
|
|
|
if (!timeout) { |
|
wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n", |
|
mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), |
|
MWL8K_CMD_TIMEOUT_MS); |
|
rc = -ETIMEDOUT; |
|
} else { |
|
int ms; |
|
|
|
ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout); |
|
|
|
rc = cmd->result ? -EINVAL : 0; |
|
if (rc) |
|
wiphy_err(hw->wiphy, "Command %s error 0x%x\n", |
|
mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), |
|
le16_to_cpu(cmd->result)); |
|
else if (ms > 2000) |
|
wiphy_notice(hw->wiphy, "Command %s took %d ms\n", |
|
mwl8k_cmd_name(cmd->code, |
|
buf, sizeof(buf)), |
|
ms); |
|
} |
|
|
|
exit: |
|
if (bitmap) |
|
mwl8k_enable_bsses(hw, true, bitmap); |
|
|
|
mwl8k_fw_unlock(hw); |
|
|
|
return rc; |
|
} |
|
|
|
static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
struct mwl8k_cmd_pkt *cmd) |
|
{ |
|
if (vif != NULL) |
|
cmd->macid = MWL8K_VIF(vif)->macid; |
|
return mwl8k_post_cmd(hw, cmd); |
|
} |
|
|
|
/* |
|
* Setup code shared between STA and AP firmware images. |
|
*/ |
|
static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
|
|
BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24)); |
|
memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24)); |
|
|
|
BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24)); |
|
memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24)); |
|
|
|
priv->band_24.band = NL80211_BAND_2GHZ; |
|
priv->band_24.channels = priv->channels_24; |
|
priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24); |
|
priv->band_24.bitrates = priv->rates_24; |
|
priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24); |
|
|
|
hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band_24; |
|
} |
|
|
|
static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
|
|
BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50)); |
|
memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50)); |
|
|
|
BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50)); |
|
memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50)); |
|
|
|
priv->band_50.band = NL80211_BAND_5GHZ; |
|
priv->band_50.channels = priv->channels_50; |
|
priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50); |
|
priv->band_50.bitrates = priv->rates_50; |
|
priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50); |
|
|
|
hw->wiphy->bands[NL80211_BAND_5GHZ] = &priv->band_50; |
|
} |
|
|
|
/* |
|
* CMD_GET_HW_SPEC (STA version). |
|
*/ |
|
struct mwl8k_cmd_get_hw_spec_sta { |
|
struct mwl8k_cmd_pkt header; |
|
__u8 hw_rev; |
|
__u8 host_interface; |
|
__le16 num_mcaddrs; |
|
__u8 perm_addr[ETH_ALEN]; |
|
__le16 region_code; |
|
__le32 fw_rev; |
|
__le32 ps_cookie; |
|
__le32 caps; |
|
__u8 mcs_bitmap[16]; |
|
__le32 rx_queue_ptr; |
|
__le32 num_tx_queues; |
|
__le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES]; |
|
__le32 caps2; |
|
__le32 num_tx_desc_per_queue; |
|
__le32 total_rxd; |
|
} __packed; |
|
|
|
#define MWL8K_CAP_MAX_AMSDU 0x20000000 |
|
#define MWL8K_CAP_GREENFIELD 0x08000000 |
|
#define MWL8K_CAP_AMPDU 0x04000000 |
|
#define MWL8K_CAP_RX_STBC 0x01000000 |
|
#define MWL8K_CAP_TX_STBC 0x00800000 |
|
#define MWL8K_CAP_SHORTGI_40MHZ 0x00400000 |
|
#define MWL8K_CAP_SHORTGI_20MHZ 0x00200000 |
|
#define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000 |
|
#define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000 |
|
#define MWL8K_CAP_DELAY_BA 0x00003000 |
|
#define MWL8K_CAP_MIMO 0x00000200 |
|
#define MWL8K_CAP_40MHZ 0x00000100 |
|
#define MWL8K_CAP_BAND_MASK 0x00000007 |
|
#define MWL8K_CAP_5GHZ 0x00000004 |
|
#define MWL8K_CAP_2GHZ4 0x00000001 |
|
|
|
static void |
|
mwl8k_set_ht_caps(struct ieee80211_hw *hw, |
|
struct ieee80211_supported_band *band, u32 cap) |
|
{ |
|
int rx_streams; |
|
int tx_streams; |
|
|
|
band->ht_cap.ht_supported = 1; |
|
|
|
if (cap & MWL8K_CAP_MAX_AMSDU) |
|
band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU; |
|
if (cap & MWL8K_CAP_GREENFIELD) |
|
band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD; |
|
if (cap & MWL8K_CAP_AMPDU) { |
|
ieee80211_hw_set(hw, AMPDU_AGGREGATION); |
|
band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; |
|
band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE; |
|
} |
|
if (cap & MWL8K_CAP_RX_STBC) |
|
band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC; |
|
if (cap & MWL8K_CAP_TX_STBC) |
|
band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC; |
|
if (cap & MWL8K_CAP_SHORTGI_40MHZ) |
|
band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40; |
|
if (cap & MWL8K_CAP_SHORTGI_20MHZ) |
|
band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20; |
|
if (cap & MWL8K_CAP_DELAY_BA) |
|
band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA; |
|
if (cap & MWL8K_CAP_40MHZ) |
|
band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
|
|
|
rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK); |
|
tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK); |
|
|
|
band->ht_cap.mcs.rx_mask[0] = 0xff; |
|
if (rx_streams >= 2) |
|
band->ht_cap.mcs.rx_mask[1] = 0xff; |
|
if (rx_streams >= 3) |
|
band->ht_cap.mcs.rx_mask[2] = 0xff; |
|
band->ht_cap.mcs.rx_mask[4] = 0x01; |
|
band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; |
|
|
|
if (rx_streams != tx_streams) { |
|
band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; |
|
band->ht_cap.mcs.tx_params |= (tx_streams - 1) << |
|
IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; |
|
} |
|
} |
|
|
|
static void |
|
mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
|
|
if (priv->caps) |
|
return; |
|
|
|
if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) { |
|
mwl8k_setup_2ghz_band(hw); |
|
if (caps & MWL8K_CAP_MIMO) |
|
mwl8k_set_ht_caps(hw, &priv->band_24, caps); |
|
} |
|
|
|
if (caps & MWL8K_CAP_5GHZ) { |
|
mwl8k_setup_5ghz_band(hw); |
|
if (caps & MWL8K_CAP_MIMO) |
|
mwl8k_set_ht_caps(hw, &priv->band_50, caps); |
|
} |
|
|
|
priv->caps = caps; |
|
} |
|
|
|
static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_cmd_get_hw_spec_sta *cmd; |
|
int rc; |
|
int i; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
|
|
memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); |
|
cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); |
|
cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma); |
|
cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv)); |
|
for (i = 0; i < mwl8k_tx_queues(priv); i++) |
|
cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma); |
|
cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); |
|
cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
|
|
if (!rc) { |
|
SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); |
|
priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); |
|
priv->fw_rev = le32_to_cpu(cmd->fw_rev); |
|
priv->hw_rev = cmd->hw_rev; |
|
mwl8k_set_caps(hw, le32_to_cpu(cmd->caps)); |
|
priv->ap_macids_supported = 0x00000000; |
|
priv->sta_macids_supported = 0x00000001; |
|
} |
|
|
|
kfree(cmd); |
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_GET_HW_SPEC (AP version). |
|
*/ |
|
struct mwl8k_cmd_get_hw_spec_ap { |
|
struct mwl8k_cmd_pkt header; |
|
__u8 hw_rev; |
|
__u8 host_interface; |
|
__le16 num_wcb; |
|
__le16 num_mcaddrs; |
|
__u8 perm_addr[ETH_ALEN]; |
|
__le16 region_code; |
|
__le16 num_antenna; |
|
__le32 fw_rev; |
|
__le32 wcbbase0; |
|
__le32 rxwrptr; |
|
__le32 rxrdptr; |
|
__le32 ps_cookie; |
|
__le32 wcbbase1; |
|
__le32 wcbbase2; |
|
__le32 wcbbase3; |
|
__le32 fw_api_version; |
|
__le32 caps; |
|
__le32 num_of_ampdu_queues; |
|
__le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES]; |
|
} __packed; |
|
|
|
static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_cmd_get_hw_spec_ap *cmd; |
|
int rc, i; |
|
u32 api_version; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
|
|
memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); |
|
cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
|
|
if (!rc) { |
|
int off; |
|
|
|
api_version = le32_to_cpu(cmd->fw_api_version); |
|
if (priv->device_info->fw_api_ap != api_version) { |
|
printk(KERN_ERR "%s: Unsupported fw API version for %s." |
|
" Expected %d got %d.\n", MWL8K_NAME, |
|
priv->device_info->part_name, |
|
priv->device_info->fw_api_ap, |
|
api_version); |
|
rc = -EINVAL; |
|
goto done; |
|
} |
|
SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); |
|
priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); |
|
priv->fw_rev = le32_to_cpu(cmd->fw_rev); |
|
priv->hw_rev = cmd->hw_rev; |
|
mwl8k_set_caps(hw, le32_to_cpu(cmd->caps)); |
|
priv->ap_macids_supported = 0x000000ff; |
|
priv->sta_macids_supported = 0x00000100; |
|
priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues); |
|
if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) { |
|
wiphy_warn(hw->wiphy, "fw reported %d ampdu queues" |
|
" but we only support %d.\n", |
|
priv->num_ampdu_queues, |
|
MWL8K_MAX_AMPDU_QUEUES); |
|
priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES; |
|
} |
|
off = le32_to_cpu(cmd->rxwrptr) & 0xffff; |
|
iowrite32(priv->rxq[0].rxd_dma, priv->sram + off); |
|
|
|
off = le32_to_cpu(cmd->rxrdptr) & 0xffff; |
|
iowrite32(priv->rxq[0].rxd_dma, priv->sram + off); |
|
|
|
priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff; |
|
priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff; |
|
priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff; |
|
priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff; |
|
|
|
for (i = 0; i < priv->num_ampdu_queues; i++) |
|
priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] = |
|
le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff; |
|
} |
|
|
|
done: |
|
kfree(cmd); |
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_SET_HW_SPEC. |
|
*/ |
|
struct mwl8k_cmd_set_hw_spec { |
|
struct mwl8k_cmd_pkt header; |
|
__u8 hw_rev; |
|
__u8 host_interface; |
|
__le16 num_mcaddrs; |
|
__u8 perm_addr[ETH_ALEN]; |
|
__le16 region_code; |
|
__le32 fw_rev; |
|
__le32 ps_cookie; |
|
__le32 caps; |
|
__le32 rx_queue_ptr; |
|
__le32 num_tx_queues; |
|
__le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES]; |
|
__le32 flags; |
|
__le32 num_tx_desc_per_queue; |
|
__le32 total_rxd; |
|
} __packed; |
|
|
|
/* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause |
|
* packets to expire 500 ms after the timestamp in the tx descriptor. That is, |
|
* the packets that are queued for more than 500ms, will be dropped in the |
|
* hardware. This helps minimizing the issues caused due to head-of-line |
|
* blocking where a slow client can hog the bandwidth and affect traffic to a |
|
* faster client. |
|
*/ |
|
#define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400 |
|
#define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200 |
|
#define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080 |
|
#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020 |
|
#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010 |
|
|
|
static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_cmd_set_hw_spec *cmd; |
|
int rc; |
|
int i; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
|
|
cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); |
|
cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma); |
|
cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv)); |
|
|
|
/* |
|
* Mac80211 stack has Q0 as highest priority and Q3 as lowest in |
|
* that order. Firmware has Q3 as highest priority and Q0 as lowest |
|
* in that order. Map Q3 of mac80211 to Q0 of firmware so that the |
|
* priority is interpreted the right way in firmware. |
|
*/ |
|
for (i = 0; i < mwl8k_tx_queues(priv); i++) { |
|
int j = mwl8k_tx_queues(priv) - 1 - i; |
|
cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma); |
|
} |
|
|
|
cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT | |
|
MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP | |
|
MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON | |
|
MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY | |
|
MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR); |
|
cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); |
|
cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_MAC_MULTICAST_ADR. |
|
*/ |
|
struct mwl8k_cmd_mac_multicast_adr { |
|
struct mwl8k_cmd_pkt header; |
|
__le16 action; |
|
__le16 numaddr; |
|
__u8 addr[][ETH_ALEN]; |
|
}; |
|
|
|
#define MWL8K_ENABLE_RX_DIRECTED 0x0001 |
|
#define MWL8K_ENABLE_RX_MULTICAST 0x0002 |
|
#define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004 |
|
#define MWL8K_ENABLE_RX_BROADCAST 0x0008 |
|
|
|
static struct mwl8k_cmd_pkt * |
|
__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti, |
|
struct netdev_hw_addr_list *mc_list) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_cmd_mac_multicast_adr *cmd; |
|
int size; |
|
int mc_count = 0; |
|
|
|
if (mc_list) |
|
mc_count = netdev_hw_addr_list_count(mc_list); |
|
|
|
if (allmulti || mc_count > priv->num_mcaddrs) { |
|
allmulti = 1; |
|
mc_count = 0; |
|
} |
|
|
|
size = sizeof(*cmd) + mc_count * ETH_ALEN; |
|
|
|
cmd = kzalloc(size, GFP_ATOMIC); |
|
if (cmd == NULL) |
|
return NULL; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR); |
|
cmd->header.length = cpu_to_le16(size); |
|
cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED | |
|
MWL8K_ENABLE_RX_BROADCAST); |
|
|
|
if (allmulti) { |
|
cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST); |
|
} else if (mc_count) { |
|
struct netdev_hw_addr *ha; |
|
int i = 0; |
|
|
|
cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST); |
|
cmd->numaddr = cpu_to_le16(mc_count); |
|
netdev_hw_addr_list_for_each(ha, mc_list) { |
|
memcpy(cmd->addr[i], ha->addr, ETH_ALEN); |
|
} |
|
} |
|
|
|
return &cmd->header; |
|
} |
|
|
|
/* |
|
* CMD_GET_STAT. |
|
*/ |
|
struct mwl8k_cmd_get_stat { |
|
struct mwl8k_cmd_pkt header; |
|
__le32 stats[64]; |
|
} __packed; |
|
|
|
#define MWL8K_STAT_ACK_FAILURE 9 |
|
#define MWL8K_STAT_RTS_FAILURE 12 |
|
#define MWL8K_STAT_FCS_ERROR 24 |
|
#define MWL8K_STAT_RTS_SUCCESS 11 |
|
|
|
static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw, |
|
struct ieee80211_low_level_stats *stats) |
|
{ |
|
struct mwl8k_cmd_get_stat *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
if (!rc) { |
|
stats->dot11ACKFailureCount = |
|
le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]); |
|
stats->dot11RTSFailureCount = |
|
le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]); |
|
stats->dot11FCSErrorCount = |
|
le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]); |
|
stats->dot11RTSSuccessCount = |
|
le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]); |
|
} |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_RADIO_CONTROL. |
|
*/ |
|
struct mwl8k_cmd_radio_control { |
|
struct mwl8k_cmd_pkt header; |
|
__le16 action; |
|
__le16 control; |
|
__le16 radio_on; |
|
} __packed; |
|
|
|
static int |
|
mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_cmd_radio_control *cmd; |
|
int rc; |
|
|
|
if (enable == priv->radio_on && !force) |
|
return 0; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->action = cpu_to_le16(MWL8K_CMD_SET); |
|
cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1); |
|
cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
if (!rc) |
|
priv->radio_on = enable; |
|
|
|
return rc; |
|
} |
|
|
|
static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw) |
|
{ |
|
return mwl8k_cmd_radio_control(hw, 0, 0); |
|
} |
|
|
|
static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw) |
|
{ |
|
return mwl8k_cmd_radio_control(hw, 1, 0); |
|
} |
|
|
|
static int |
|
mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
|
|
priv->radio_short_preamble = short_preamble; |
|
|
|
return mwl8k_cmd_radio_control(hw, 1, 1); |
|
} |
|
|
|
/* |
|
* CMD_RF_TX_POWER. |
|
*/ |
|
#define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8 |
|
|
|
struct mwl8k_cmd_rf_tx_power { |
|
struct mwl8k_cmd_pkt header; |
|
__le16 action; |
|
__le16 support_level; |
|
__le16 current_level; |
|
__le16 reserved; |
|
__le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL]; |
|
} __packed; |
|
|
|
static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm) |
|
{ |
|
struct mwl8k_cmd_rf_tx_power *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->action = cpu_to_le16(MWL8K_CMD_SET); |
|
cmd->support_level = cpu_to_le16(dBm); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_TX_POWER. |
|
*/ |
|
#define MWL8K_TX_POWER_LEVEL_TOTAL 12 |
|
|
|
struct mwl8k_cmd_tx_power { |
|
struct mwl8k_cmd_pkt header; |
|
__le16 action; |
|
__le16 band; |
|
__le16 channel; |
|
__le16 bw; |
|
__le16 sub_ch; |
|
__le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL]; |
|
} __packed; |
|
|
|
static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw, |
|
struct ieee80211_conf *conf, |
|
unsigned short pwr) |
|
{ |
|
struct ieee80211_channel *channel = conf->chandef.chan; |
|
enum nl80211_channel_type channel_type = |
|
cfg80211_get_chandef_type(&conf->chandef); |
|
struct mwl8k_cmd_tx_power *cmd; |
|
int rc; |
|
int i; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST); |
|
|
|
if (channel->band == NL80211_BAND_2GHZ) |
|
cmd->band = cpu_to_le16(0x1); |
|
else if (channel->band == NL80211_BAND_5GHZ) |
|
cmd->band = cpu_to_le16(0x4); |
|
|
|
cmd->channel = cpu_to_le16(channel->hw_value); |
|
|
|
if (channel_type == NL80211_CHAN_NO_HT || |
|
channel_type == NL80211_CHAN_HT20) { |
|
cmd->bw = cpu_to_le16(0x2); |
|
} else { |
|
cmd->bw = cpu_to_le16(0x4); |
|
if (channel_type == NL80211_CHAN_HT40MINUS) |
|
cmd->sub_ch = cpu_to_le16(0x3); |
|
else if (channel_type == NL80211_CHAN_HT40PLUS) |
|
cmd->sub_ch = cpu_to_le16(0x1); |
|
} |
|
|
|
for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++) |
|
cmd->power_level_list[i] = cpu_to_le16(pwr); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_RF_ANTENNA. |
|
*/ |
|
struct mwl8k_cmd_rf_antenna { |
|
struct mwl8k_cmd_pkt header; |
|
__le16 antenna; |
|
__le16 mode; |
|
} __packed; |
|
|
|
#define MWL8K_RF_ANTENNA_RX 1 |
|
#define MWL8K_RF_ANTENNA_TX 2 |
|
|
|
static int |
|
mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask) |
|
{ |
|
struct mwl8k_cmd_rf_antenna *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->antenna = cpu_to_le16(antenna); |
|
cmd->mode = cpu_to_le16(mask); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_SET_BEACON. |
|
*/ |
|
struct mwl8k_cmd_set_beacon { |
|
struct mwl8k_cmd_pkt header; |
|
__le16 beacon_len; |
|
__u8 beacon[]; |
|
}; |
|
|
|
static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, u8 *beacon, int len) |
|
{ |
|
struct mwl8k_cmd_set_beacon *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd) + len); |
|
cmd->beacon_len = cpu_to_le16(len); |
|
memcpy(cmd->beacon, beacon, len); |
|
|
|
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_SET_PRE_SCAN. |
|
*/ |
|
struct mwl8k_cmd_set_pre_scan { |
|
struct mwl8k_cmd_pkt header; |
|
} __packed; |
|
|
|
static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw) |
|
{ |
|
struct mwl8k_cmd_set_pre_scan *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_BBP_REG_ACCESS. |
|
*/ |
|
struct mwl8k_cmd_bbp_reg_access { |
|
struct mwl8k_cmd_pkt header; |
|
__le16 action; |
|
__le16 offset; |
|
u8 value; |
|
u8 rsrv[3]; |
|
} __packed; |
|
|
|
static int |
|
mwl8k_cmd_bbp_reg_access(struct ieee80211_hw *hw, |
|
u16 action, |
|
u16 offset, |
|
u8 *value) |
|
{ |
|
struct mwl8k_cmd_bbp_reg_access *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_BBP_REG_ACCESS); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->action = cpu_to_le16(action); |
|
cmd->offset = cpu_to_le16(offset); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
|
|
if (!rc) |
|
*value = cmd->value; |
|
else |
|
*value = 0; |
|
|
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_SET_POST_SCAN. |
|
*/ |
|
struct mwl8k_cmd_set_post_scan { |
|
struct mwl8k_cmd_pkt header; |
|
__le32 isibss; |
|
__u8 bssid[ETH_ALEN]; |
|
} __packed; |
|
|
|
static int |
|
mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac) |
|
{ |
|
struct mwl8k_cmd_set_post_scan *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->isibss = 0; |
|
memcpy(cmd->bssid, mac, ETH_ALEN); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
static int freq_to_idx(struct mwl8k_priv *priv, int freq) |
|
{ |
|
struct ieee80211_supported_band *sband; |
|
int band, ch, idx = 0; |
|
|
|
for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) { |
|
sband = priv->hw->wiphy->bands[band]; |
|
if (!sband) |
|
continue; |
|
|
|
for (ch = 0; ch < sband->n_channels; ch++, idx++) |
|
if (sband->channels[ch].center_freq == freq) |
|
goto exit; |
|
} |
|
|
|
exit: |
|
return idx; |
|
} |
|
|
|
static void mwl8k_update_survey(struct mwl8k_priv *priv, |
|
struct ieee80211_channel *channel) |
|
{ |
|
u32 cca_cnt, rx_rdy; |
|
s8 nf = 0, idx; |
|
struct survey_info *survey; |
|
|
|
idx = freq_to_idx(priv, priv->acs_chan->center_freq); |
|
if (idx >= MWL8K_NUM_CHANS) { |
|
wiphy_err(priv->hw->wiphy, "Failed to update survey\n"); |
|
return; |
|
} |
|
|
|
survey = &priv->survey[idx]; |
|
|
|
cca_cnt = ioread32(priv->regs + NOK_CCA_CNT_REG); |
|
cca_cnt /= 1000; /* uSecs to mSecs */ |
|
survey->time_busy = (u64) cca_cnt; |
|
|
|
rx_rdy = ioread32(priv->regs + BBU_RXRDY_CNT_REG); |
|
rx_rdy /= 1000; /* uSecs to mSecs */ |
|
survey->time_rx = (u64) rx_rdy; |
|
|
|
priv->channel_time = jiffies - priv->channel_time; |
|
survey->time = jiffies_to_msecs(priv->channel_time); |
|
|
|
survey->channel = channel; |
|
|
|
mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &nf); |
|
|
|
/* Make sure sign is negative else ACS at hostapd fails */ |
|
survey->noise = nf * -1; |
|
|
|
survey->filled = SURVEY_INFO_NOISE_DBM | |
|
SURVEY_INFO_TIME | |
|
SURVEY_INFO_TIME_BUSY | |
|
SURVEY_INFO_TIME_RX; |
|
} |
|
|
|
/* |
|
* CMD_SET_RF_CHANNEL. |
|
*/ |
|
struct mwl8k_cmd_set_rf_channel { |
|
struct mwl8k_cmd_pkt header; |
|
__le16 action; |
|
__u8 current_channel; |
|
__le32 channel_flags; |
|
} __packed; |
|
|
|
static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw, |
|
struct ieee80211_conf *conf) |
|
{ |
|
struct ieee80211_channel *channel = conf->chandef.chan; |
|
enum nl80211_channel_type channel_type = |
|
cfg80211_get_chandef_type(&conf->chandef); |
|
struct mwl8k_cmd_set_rf_channel *cmd; |
|
struct mwl8k_priv *priv = hw->priv; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->action = cpu_to_le16(MWL8K_CMD_SET); |
|
cmd->current_channel = channel->hw_value; |
|
|
|
if (channel->band == NL80211_BAND_2GHZ) |
|
cmd->channel_flags |= cpu_to_le32(0x00000001); |
|
else if (channel->band == NL80211_BAND_5GHZ) |
|
cmd->channel_flags |= cpu_to_le32(0x00000004); |
|
|
|
if (!priv->sw_scan_start) { |
|
if (channel_type == NL80211_CHAN_NO_HT || |
|
channel_type == NL80211_CHAN_HT20) |
|
cmd->channel_flags |= cpu_to_le32(0x00000080); |
|
else if (channel_type == NL80211_CHAN_HT40MINUS) |
|
cmd->channel_flags |= cpu_to_le32(0x000001900); |
|
else if (channel_type == NL80211_CHAN_HT40PLUS) |
|
cmd->channel_flags |= cpu_to_le32(0x000000900); |
|
} else { |
|
cmd->channel_flags |= cpu_to_le32(0x00000080); |
|
} |
|
|
|
if (priv->sw_scan_start) { |
|
/* Store current channel stats |
|
* before switching to newer one. |
|
* This will be processed only for AP fw. |
|
*/ |
|
if (priv->channel_time != 0) |
|
mwl8k_update_survey(priv, priv->acs_chan); |
|
|
|
priv->channel_time = jiffies; |
|
priv->acs_chan = channel; |
|
} |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_SET_AID. |
|
*/ |
|
#define MWL8K_FRAME_PROT_DISABLED 0x00 |
|
#define MWL8K_FRAME_PROT_11G 0x07 |
|
#define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02 |
|
#define MWL8K_FRAME_PROT_11N_HT_ALL 0x06 |
|
|
|
struct mwl8k_cmd_update_set_aid { |
|
struct mwl8k_cmd_pkt header; |
|
__le16 aid; |
|
|
|
/* AP's MAC address (BSSID) */ |
|
__u8 bssid[ETH_ALEN]; |
|
__le16 protection_mode; |
|
__u8 supp_rates[14]; |
|
} __packed; |
|
|
|
static void legacy_rate_mask_to_array(u8 *rates, u32 mask) |
|
{ |
|
int i; |
|
int j; |
|
|
|
/* |
|
* Clear nonstandard rate 4. |
|
*/ |
|
mask &= 0x1fef; |
|
|
|
for (i = 0, j = 0; i < 13; i++) { |
|
if (mask & (1 << i)) |
|
rates[j++] = mwl8k_rates_24[i].hw_value; |
|
} |
|
} |
|
|
|
static int |
|
mwl8k_cmd_set_aid(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, u32 legacy_rate_mask) |
|
{ |
|
struct mwl8k_cmd_update_set_aid *cmd; |
|
u16 prot_mode; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->aid = cpu_to_le16(vif->bss_conf.aid); |
|
memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); |
|
|
|
if (vif->bss_conf.use_cts_prot) { |
|
prot_mode = MWL8K_FRAME_PROT_11G; |
|
} else { |
|
switch (vif->bss_conf.ht_operation_mode & |
|
IEEE80211_HT_OP_MODE_PROTECTION) { |
|
case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: |
|
prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY; |
|
break; |
|
case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: |
|
prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL; |
|
break; |
|
default: |
|
prot_mode = MWL8K_FRAME_PROT_DISABLED; |
|
break; |
|
} |
|
} |
|
cmd->protection_mode = cpu_to_le16(prot_mode); |
|
|
|
legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_SET_RATE. |
|
*/ |
|
struct mwl8k_cmd_set_rate { |
|
struct mwl8k_cmd_pkt header; |
|
__u8 legacy_rates[14]; |
|
|
|
/* Bitmap for supported MCS codes. */ |
|
__u8 mcs_set[16]; |
|
__u8 reserved[16]; |
|
} __packed; |
|
|
|
static int |
|
mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
|
u32 legacy_rate_mask, u8 *mcs_rates) |
|
{ |
|
struct mwl8k_cmd_set_rate *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask); |
|
memcpy(cmd->mcs_set, mcs_rates, 16); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_FINALIZE_JOIN. |
|
*/ |
|
#define MWL8K_FJ_BEACON_MAXLEN 128 |
|
|
|
struct mwl8k_cmd_finalize_join { |
|
struct mwl8k_cmd_pkt header; |
|
__le32 sleep_interval; /* Number of beacon periods to sleep */ |
|
__u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN]; |
|
} __packed; |
|
|
|
static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame, |
|
int framelen, int dtim) |
|
{ |
|
struct mwl8k_cmd_finalize_join *cmd; |
|
struct ieee80211_mgmt *payload = frame; |
|
int payload_len; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1); |
|
|
|
payload_len = framelen - ieee80211_hdrlen(payload->frame_control); |
|
if (payload_len < 0) |
|
payload_len = 0; |
|
else if (payload_len > MWL8K_FJ_BEACON_MAXLEN) |
|
payload_len = MWL8K_FJ_BEACON_MAXLEN; |
|
|
|
memcpy(cmd->beacon_data, &payload->u.beacon, payload_len); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_SET_RTS_THRESHOLD. |
|
*/ |
|
struct mwl8k_cmd_set_rts_threshold { |
|
struct mwl8k_cmd_pkt header; |
|
__le16 action; |
|
__le16 threshold; |
|
} __packed; |
|
|
|
static int |
|
mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh) |
|
{ |
|
struct mwl8k_cmd_set_rts_threshold *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->action = cpu_to_le16(MWL8K_CMD_SET); |
|
cmd->threshold = cpu_to_le16(rts_thresh); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_SET_SLOT. |
|
*/ |
|
struct mwl8k_cmd_set_slot { |
|
struct mwl8k_cmd_pkt header; |
|
__le16 action; |
|
__u8 short_slot; |
|
} __packed; |
|
|
|
static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time) |
|
{ |
|
struct mwl8k_cmd_set_slot *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->action = cpu_to_le16(MWL8K_CMD_SET); |
|
cmd->short_slot = short_slot_time; |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_SET_EDCA_PARAMS. |
|
*/ |
|
struct mwl8k_cmd_set_edca_params { |
|
struct mwl8k_cmd_pkt header; |
|
|
|
/* See MWL8K_SET_EDCA_XXX below */ |
|
__le16 action; |
|
|
|
/* TX opportunity in units of 32 us */ |
|
__le16 txop; |
|
|
|
union { |
|
struct { |
|
/* Log exponent of max contention period: 0...15 */ |
|
__le32 log_cw_max; |
|
|
|
/* Log exponent of min contention period: 0...15 */ |
|
__le32 log_cw_min; |
|
|
|
/* Adaptive interframe spacing in units of 32us */ |
|
__u8 aifs; |
|
|
|
/* TX queue to configure */ |
|
__u8 txq; |
|
} ap; |
|
struct { |
|
/* Log exponent of max contention period: 0...15 */ |
|
__u8 log_cw_max; |
|
|
|
/* Log exponent of min contention period: 0...15 */ |
|
__u8 log_cw_min; |
|
|
|
/* Adaptive interframe spacing in units of 32us */ |
|
__u8 aifs; |
|
|
|
/* TX queue to configure */ |
|
__u8 txq; |
|
} sta; |
|
}; |
|
} __packed; |
|
|
|
#define MWL8K_SET_EDCA_CW 0x01 |
|
#define MWL8K_SET_EDCA_TXOP 0x02 |
|
#define MWL8K_SET_EDCA_AIFS 0x04 |
|
|
|
#define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \ |
|
MWL8K_SET_EDCA_TXOP | \ |
|
MWL8K_SET_EDCA_AIFS) |
|
|
|
static int |
|
mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum, |
|
__u16 cw_min, __u16 cw_max, |
|
__u8 aifs, __u16 txop) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_cmd_set_edca_params *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL); |
|
cmd->txop = cpu_to_le16(txop); |
|
if (priv->ap_fw) { |
|
cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1)); |
|
cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1)); |
|
cmd->ap.aifs = aifs; |
|
cmd->ap.txq = qnum; |
|
} else { |
|
cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1); |
|
cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1); |
|
cmd->sta.aifs = aifs; |
|
cmd->sta.txq = qnum; |
|
} |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_SET_WMM_MODE. |
|
*/ |
|
struct mwl8k_cmd_set_wmm_mode { |
|
struct mwl8k_cmd_pkt header; |
|
__le16 action; |
|
} __packed; |
|
|
|
static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_cmd_set_wmm_mode *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->action = cpu_to_le16(!!enable); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
if (!rc) |
|
priv->wmm_enabled = enable; |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_MIMO_CONFIG. |
|
*/ |
|
struct mwl8k_cmd_mimo_config { |
|
struct mwl8k_cmd_pkt header; |
|
__le32 action; |
|
__u8 rx_antenna_map; |
|
__u8 tx_antenna_map; |
|
} __packed; |
|
|
|
static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx) |
|
{ |
|
struct mwl8k_cmd_mimo_config *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET); |
|
cmd->rx_antenna_map = rx; |
|
cmd->tx_antenna_map = tx; |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_USE_FIXED_RATE (STA version). |
|
*/ |
|
struct mwl8k_cmd_use_fixed_rate_sta { |
|
struct mwl8k_cmd_pkt header; |
|
__le32 action; |
|
__le32 allow_rate_drop; |
|
__le32 num_rates; |
|
struct { |
|
__le32 is_ht_rate; |
|
__le32 enable_retry; |
|
__le32 rate; |
|
__le32 retry_count; |
|
} rate_entry[8]; |
|
__le32 rate_type; |
|
__le32 reserved1; |
|
__le32 reserved2; |
|
} __packed; |
|
|
|
#define MWL8K_USE_AUTO_RATE 0x0002 |
|
#define MWL8K_UCAST_RATE 0 |
|
|
|
static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw) |
|
{ |
|
struct mwl8k_cmd_use_fixed_rate_sta *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE); |
|
cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_USE_FIXED_RATE (AP version). |
|
*/ |
|
struct mwl8k_cmd_use_fixed_rate_ap { |
|
struct mwl8k_cmd_pkt header; |
|
__le32 action; |
|
__le32 allow_rate_drop; |
|
__le32 num_rates; |
|
struct mwl8k_rate_entry_ap { |
|
__le32 is_ht_rate; |
|
__le32 enable_retry; |
|
__le32 rate; |
|
__le32 retry_count; |
|
} rate_entry[4]; |
|
u8 multicast_rate; |
|
u8 multicast_rate_type; |
|
u8 management_rate; |
|
} __packed; |
|
|
|
static int |
|
mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt) |
|
{ |
|
struct mwl8k_cmd_use_fixed_rate_ap *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE); |
|
cmd->multicast_rate = mcast; |
|
cmd->management_rate = mgmt; |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_ENABLE_SNIFFER. |
|
*/ |
|
struct mwl8k_cmd_enable_sniffer { |
|
struct mwl8k_cmd_pkt header; |
|
__le32 action; |
|
} __packed; |
|
|
|
static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable) |
|
{ |
|
struct mwl8k_cmd_enable_sniffer *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->action = cpu_to_le32(!!enable); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
struct mwl8k_cmd_update_mac_addr { |
|
struct mwl8k_cmd_pkt header; |
|
union { |
|
struct { |
|
__le16 mac_type; |
|
__u8 mac_addr[ETH_ALEN]; |
|
} mbss; |
|
__u8 mac_addr[ETH_ALEN]; |
|
}; |
|
} __packed; |
|
|
|
#define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0 |
|
#define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1 |
|
#define MWL8K_MAC_TYPE_PRIMARY_AP 2 |
|
#define MWL8K_MAC_TYPE_SECONDARY_AP 3 |
|
|
|
static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, u8 *mac, bool set) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); |
|
struct mwl8k_cmd_update_mac_addr *cmd; |
|
int mac_type; |
|
int rc; |
|
|
|
mac_type = MWL8K_MAC_TYPE_PRIMARY_AP; |
|
if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) { |
|
if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported)) |
|
if (priv->ap_fw) |
|
mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT; |
|
else |
|
mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT; |
|
else |
|
mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT; |
|
} else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) { |
|
if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported)) |
|
mac_type = MWL8K_MAC_TYPE_PRIMARY_AP; |
|
else |
|
mac_type = MWL8K_MAC_TYPE_SECONDARY_AP; |
|
} |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
if (set) |
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR); |
|
else |
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR); |
|
|
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
if (priv->ap_fw) { |
|
cmd->mbss.mac_type = cpu_to_le16(mac_type); |
|
memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN); |
|
} else { |
|
memcpy(cmd->mac_addr, mac, ETH_ALEN); |
|
} |
|
|
|
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* MWL8K_CMD_SET_MAC_ADDR. |
|
*/ |
|
static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, u8 *mac) |
|
{ |
|
return mwl8k_cmd_update_mac_addr(hw, vif, mac, true); |
|
} |
|
|
|
/* |
|
* MWL8K_CMD_DEL_MAC_ADDR. |
|
*/ |
|
static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, u8 *mac) |
|
{ |
|
return mwl8k_cmd_update_mac_addr(hw, vif, mac, false); |
|
} |
|
|
|
/* |
|
* CMD_SET_RATEADAPT_MODE. |
|
*/ |
|
struct mwl8k_cmd_set_rate_adapt_mode { |
|
struct mwl8k_cmd_pkt header; |
|
__le16 action; |
|
__le16 mode; |
|
} __packed; |
|
|
|
static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode) |
|
{ |
|
struct mwl8k_cmd_set_rate_adapt_mode *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->action = cpu_to_le16(MWL8K_CMD_SET); |
|
cmd->mode = cpu_to_le16(mode); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_GET_WATCHDOG_BITMAP. |
|
*/ |
|
struct mwl8k_cmd_get_watchdog_bitmap { |
|
struct mwl8k_cmd_pkt header; |
|
u8 bitmap; |
|
} __packed; |
|
|
|
static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap) |
|
{ |
|
struct mwl8k_cmd_get_watchdog_bitmap *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
if (!rc) |
|
*bitmap = cmd->bitmap; |
|
|
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
#define MWL8K_WMM_QUEUE_NUMBER 3 |
|
|
|
static void mwl8k_destroy_ba(struct ieee80211_hw *hw, |
|
u8 idx); |
|
|
|
static void mwl8k_watchdog_ba_events(struct work_struct *work) |
|
{ |
|
int rc; |
|
u8 bitmap = 0, stream_index; |
|
struct mwl8k_ampdu_stream *streams; |
|
struct mwl8k_priv *priv = |
|
container_of(work, struct mwl8k_priv, watchdog_ba_handle); |
|
struct ieee80211_hw *hw = priv->hw; |
|
int i; |
|
u32 status = 0; |
|
|
|
mwl8k_fw_lock(hw); |
|
|
|
rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap); |
|
if (rc) |
|
goto done; |
|
|
|
spin_lock(&priv->stream_lock); |
|
|
|
/* the bitmap is the hw queue number. Map it to the ampdu queue. */ |
|
for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) { |
|
if (bitmap & (1 << i)) { |
|
stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) % |
|
TOTAL_HW_TX_QUEUES; |
|
streams = &priv->ampdu[stream_index]; |
|
if (streams->state == AMPDU_STREAM_ACTIVE) { |
|
ieee80211_stop_tx_ba_session(streams->sta, |
|
streams->tid); |
|
spin_unlock(&priv->stream_lock); |
|
mwl8k_destroy_ba(hw, stream_index); |
|
spin_lock(&priv->stream_lock); |
|
} |
|
} |
|
} |
|
|
|
spin_unlock(&priv->stream_lock); |
|
done: |
|
atomic_dec(&priv->watchdog_event_pending); |
|
status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); |
|
iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG), |
|
priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); |
|
mwl8k_fw_unlock(hw); |
|
return; |
|
} |
|
|
|
|
|
/* |
|
* CMD_BSS_START. |
|
*/ |
|
struct mwl8k_cmd_bss_start { |
|
struct mwl8k_cmd_pkt header; |
|
__le32 enable; |
|
} __packed; |
|
|
|
static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, int enable) |
|
{ |
|
struct mwl8k_cmd_bss_start *cmd; |
|
struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); |
|
struct mwl8k_priv *priv = hw->priv; |
|
int rc; |
|
|
|
if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid))) |
|
return 0; |
|
|
|
if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid))) |
|
return 0; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->enable = cpu_to_le32(enable); |
|
|
|
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
|
kfree(cmd); |
|
|
|
if (!rc) { |
|
if (enable) |
|
priv->running_bsses |= (1 << mwl8k_vif->macid); |
|
else |
|
priv->running_bsses &= ~(1 << mwl8k_vif->macid); |
|
} |
|
return rc; |
|
} |
|
|
|
static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_vif *mwl8k_vif, *tmp_vif; |
|
struct ieee80211_vif *vif; |
|
|
|
list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) { |
|
vif = mwl8k_vif->vif; |
|
|
|
if (!(bitmap & (1 << mwl8k_vif->macid))) |
|
continue; |
|
|
|
if (vif->type == NL80211_IFTYPE_AP) |
|
mwl8k_cmd_bss_start(hw, vif, enable); |
|
} |
|
} |
|
/* |
|
* CMD_BASTREAM. |
|
*/ |
|
|
|
/* |
|
* UPSTREAM is tx direction |
|
*/ |
|
#define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00 |
|
#define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01 |
|
|
|
enum ba_stream_action_type { |
|
MWL8K_BA_CREATE, |
|
MWL8K_BA_UPDATE, |
|
MWL8K_BA_DESTROY, |
|
MWL8K_BA_FLUSH, |
|
MWL8K_BA_CHECK, |
|
}; |
|
|
|
|
|
struct mwl8k_create_ba_stream { |
|
__le32 flags; |
|
__le32 idle_thrs; |
|
__le32 bar_thrs; |
|
__le32 window_size; |
|
u8 peer_mac_addr[6]; |
|
u8 dialog_token; |
|
u8 tid; |
|
u8 queue_id; |
|
u8 param_info; |
|
__le32 ba_context; |
|
u8 reset_seq_no_flag; |
|
__le16 curr_seq_no; |
|
u8 sta_src_mac_addr[6]; |
|
} __packed; |
|
|
|
struct mwl8k_destroy_ba_stream { |
|
__le32 flags; |
|
__le32 ba_context; |
|
} __packed; |
|
|
|
struct mwl8k_cmd_bastream { |
|
struct mwl8k_cmd_pkt header; |
|
__le32 action; |
|
union { |
|
struct mwl8k_create_ba_stream create_params; |
|
struct mwl8k_destroy_ba_stream destroy_params; |
|
}; |
|
} __packed; |
|
|
|
static int |
|
mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream, |
|
struct ieee80211_vif *vif) |
|
{ |
|
struct mwl8k_cmd_bastream *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
|
|
cmd->action = cpu_to_le32(MWL8K_BA_CHECK); |
|
|
|
cmd->create_params.queue_id = stream->idx; |
|
memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr, |
|
ETH_ALEN); |
|
cmd->create_params.tid = stream->tid; |
|
|
|
cmd->create_params.flags = |
|
cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) | |
|
cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM); |
|
|
|
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
|
|
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
static int |
|
mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream, |
|
u8 buf_size, struct ieee80211_vif *vif) |
|
{ |
|
struct mwl8k_cmd_bastream *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
|
|
cmd->action = cpu_to_le32(MWL8K_BA_CREATE); |
|
|
|
cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size); |
|
cmd->create_params.window_size = cpu_to_le32((u32)buf_size); |
|
cmd->create_params.queue_id = stream->idx; |
|
|
|
memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN); |
|
cmd->create_params.tid = stream->tid; |
|
cmd->create_params.curr_seq_no = cpu_to_le16(0); |
|
cmd->create_params.reset_seq_no_flag = 1; |
|
|
|
cmd->create_params.param_info = |
|
(stream->sta->ht_cap.ampdu_factor & |
|
IEEE80211_HT_AMPDU_PARM_FACTOR) | |
|
((stream->sta->ht_cap.ampdu_density << 2) & |
|
IEEE80211_HT_AMPDU_PARM_DENSITY); |
|
|
|
cmd->create_params.flags = |
|
cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE | |
|
BASTREAM_FLAG_DIRECTION_UPSTREAM); |
|
|
|
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
|
|
|
wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n", |
|
stream->sta->addr, stream->tid); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
static void mwl8k_destroy_ba(struct ieee80211_hw *hw, |
|
u8 idx) |
|
{ |
|
struct mwl8k_cmd_bastream *cmd; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->action = cpu_to_le32(MWL8K_BA_DESTROY); |
|
|
|
cmd->destroy_params.ba_context = cpu_to_le32(idx); |
|
mwl8k_post_cmd(hw, &cmd->header); |
|
|
|
wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx); |
|
|
|
kfree(cmd); |
|
} |
|
|
|
/* |
|
* CMD_SET_NEW_STN. |
|
*/ |
|
struct mwl8k_cmd_set_new_stn { |
|
struct mwl8k_cmd_pkt header; |
|
__le16 aid; |
|
__u8 mac_addr[6]; |
|
__le16 stn_id; |
|
__le16 action; |
|
__le16 rsvd; |
|
__le32 legacy_rates; |
|
__u8 ht_rates[4]; |
|
__le16 cap_info; |
|
__le16 ht_capabilities_info; |
|
__u8 mac_ht_param_info; |
|
__u8 rev; |
|
__u8 control_channel; |
|
__u8 add_channel; |
|
__le16 op_mode; |
|
__le16 stbc; |
|
__u8 add_qos_info; |
|
__u8 is_qos_sta; |
|
__le32 fw_sta_ptr; |
|
} __packed; |
|
|
|
#define MWL8K_STA_ACTION_ADD 0 |
|
#define MWL8K_STA_ACTION_REMOVE 2 |
|
|
|
static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta) |
|
{ |
|
struct mwl8k_cmd_set_new_stn *cmd; |
|
u32 rates; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->aid = cpu_to_le16(sta->aid); |
|
memcpy(cmd->mac_addr, sta->addr, ETH_ALEN); |
|
cmd->stn_id = cpu_to_le16(sta->aid); |
|
cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD); |
|
if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) |
|
rates = sta->supp_rates[NL80211_BAND_2GHZ]; |
|
else |
|
rates = sta->supp_rates[NL80211_BAND_5GHZ] << 5; |
|
cmd->legacy_rates = cpu_to_le32(rates); |
|
if (sta->ht_cap.ht_supported) { |
|
cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0]; |
|
cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1]; |
|
cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2]; |
|
cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3]; |
|
cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap); |
|
cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) | |
|
((sta->ht_cap.ampdu_density & 7) << 2); |
|
cmd->is_qos_sta = 1; |
|
} |
|
|
|
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif) |
|
{ |
|
struct mwl8k_cmd_set_new_stn *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
memcpy(cmd->mac_addr, vif->addr, ETH_ALEN); |
|
|
|
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, u8 *addr) |
|
{ |
|
struct mwl8k_cmd_set_new_stn *cmd; |
|
struct mwl8k_priv *priv = hw->priv; |
|
int rc, i; |
|
u8 idx; |
|
|
|
spin_lock(&priv->stream_lock); |
|
/* Destroy any active ampdu streams for this sta */ |
|
for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { |
|
struct mwl8k_ampdu_stream *s; |
|
s = &priv->ampdu[i]; |
|
if (s->state != AMPDU_NO_STREAM) { |
|
if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) { |
|
if (s->state == AMPDU_STREAM_ACTIVE) { |
|
idx = s->idx; |
|
spin_unlock(&priv->stream_lock); |
|
mwl8k_destroy_ba(hw, idx); |
|
spin_lock(&priv->stream_lock); |
|
} else if (s->state == AMPDU_STREAM_NEW) { |
|
mwl8k_remove_stream(hw, s); |
|
} |
|
} |
|
} |
|
} |
|
|
|
spin_unlock(&priv->stream_lock); |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
memcpy(cmd->mac_addr, addr, ETH_ALEN); |
|
cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE); |
|
|
|
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_UPDATE_ENCRYPTION. |
|
*/ |
|
|
|
#define MAX_ENCR_KEY_LENGTH 16 |
|
#define MIC_KEY_LENGTH 8 |
|
|
|
struct mwl8k_cmd_update_encryption { |
|
struct mwl8k_cmd_pkt header; |
|
|
|
__le32 action; |
|
__le32 reserved; |
|
__u8 mac_addr[6]; |
|
__u8 encr_type; |
|
|
|
} __packed; |
|
|
|
struct mwl8k_cmd_set_key { |
|
struct mwl8k_cmd_pkt header; |
|
|
|
__le32 action; |
|
__le32 reserved; |
|
__le16 length; |
|
__le16 key_type_id; |
|
__le32 key_info; |
|
__le32 key_id; |
|
__le16 key_len; |
|
__u8 key_material[MAX_ENCR_KEY_LENGTH]; |
|
__u8 tkip_tx_mic_key[MIC_KEY_LENGTH]; |
|
__u8 tkip_rx_mic_key[MIC_KEY_LENGTH]; |
|
__le16 tkip_rsc_low; |
|
__le32 tkip_rsc_high; |
|
__le16 tkip_tsc_low; |
|
__le32 tkip_tsc_high; |
|
__u8 mac_addr[6]; |
|
} __packed; |
|
|
|
enum { |
|
MWL8K_ENCR_ENABLE, |
|
MWL8K_ENCR_SET_KEY, |
|
MWL8K_ENCR_REMOVE_KEY, |
|
MWL8K_ENCR_SET_GROUP_KEY, |
|
}; |
|
|
|
#define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0 |
|
#define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1 |
|
#define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4 |
|
#define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7 |
|
#define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8 |
|
|
|
enum { |
|
MWL8K_ALG_WEP, |
|
MWL8K_ALG_TKIP, |
|
MWL8K_ALG_CCMP, |
|
}; |
|
|
|
#define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004 |
|
#define MWL8K_KEY_FLAG_PAIRWISE 0x00000008 |
|
#define MWL8K_KEY_FLAG_TSC_VALID 0x00000040 |
|
#define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000 |
|
#define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000 |
|
|
|
static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
u8 *addr, |
|
u8 encr_type) |
|
{ |
|
struct mwl8k_cmd_update_encryption *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE); |
|
memcpy(cmd->mac_addr, addr, ETH_ALEN); |
|
cmd->encr_type = encr_type; |
|
|
|
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd, |
|
u8 *addr, |
|
struct ieee80211_key_conf *key) |
|
{ |
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->length = cpu_to_le16(sizeof(*cmd) - |
|
offsetof(struct mwl8k_cmd_set_key, length)); |
|
cmd->key_id = cpu_to_le32(key->keyidx); |
|
cmd->key_len = cpu_to_le16(key->keylen); |
|
memcpy(cmd->mac_addr, addr, ETH_ALEN); |
|
|
|
switch (key->cipher) { |
|
case WLAN_CIPHER_SUITE_WEP40: |
|
case WLAN_CIPHER_SUITE_WEP104: |
|
cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP); |
|
if (key->keyidx == 0) |
|
cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY); |
|
|
|
break; |
|
case WLAN_CIPHER_SUITE_TKIP: |
|
cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP); |
|
cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) |
|
? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE) |
|
: cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY); |
|
cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID |
|
| MWL8K_KEY_FLAG_TSC_VALID); |
|
break; |
|
case WLAN_CIPHER_SUITE_CCMP: |
|
cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP); |
|
cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) |
|
? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE) |
|
: cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY); |
|
break; |
|
default: |
|
return -ENOTSUPP; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
u8 *addr, |
|
struct ieee80211_key_conf *key) |
|
{ |
|
struct mwl8k_cmd_set_key *cmd; |
|
int rc; |
|
int keymlen; |
|
u32 action; |
|
u8 idx; |
|
struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
rc = mwl8k_encryption_set_cmd_info(cmd, addr, key); |
|
if (rc < 0) |
|
goto done; |
|
|
|
idx = key->keyidx; |
|
|
|
if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) |
|
action = MWL8K_ENCR_SET_KEY; |
|
else |
|
action = MWL8K_ENCR_SET_GROUP_KEY; |
|
|
|
switch (key->cipher) { |
|
case WLAN_CIPHER_SUITE_WEP40: |
|
case WLAN_CIPHER_SUITE_WEP104: |
|
if (!mwl8k_vif->wep_key_conf[idx].enabled) { |
|
memcpy(mwl8k_vif->wep_key_conf[idx].key, key, |
|
sizeof(*key) + key->keylen); |
|
mwl8k_vif->wep_key_conf[idx].enabled = 1; |
|
} |
|
|
|
keymlen = key->keylen; |
|
action = MWL8K_ENCR_SET_KEY; |
|
break; |
|
case WLAN_CIPHER_SUITE_TKIP: |
|
keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH; |
|
break; |
|
case WLAN_CIPHER_SUITE_CCMP: |
|
keymlen = key->keylen; |
|
break; |
|
default: |
|
rc = -ENOTSUPP; |
|
goto done; |
|
} |
|
|
|
memcpy(cmd->key_material, key->key, keymlen); |
|
cmd->action = cpu_to_le32(action); |
|
|
|
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
|
done: |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
u8 *addr, |
|
struct ieee80211_key_conf *key) |
|
{ |
|
struct mwl8k_cmd_set_key *cmd; |
|
int rc; |
|
struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
rc = mwl8k_encryption_set_cmd_info(cmd, addr, key); |
|
if (rc < 0) |
|
goto done; |
|
|
|
if (key->cipher == WLAN_CIPHER_SUITE_WEP40 || |
|
key->cipher == WLAN_CIPHER_SUITE_WEP104) |
|
mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0; |
|
|
|
cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY); |
|
|
|
rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); |
|
done: |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
static int mwl8k_set_key(struct ieee80211_hw *hw, |
|
enum set_key_cmd cmd_param, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta, |
|
struct ieee80211_key_conf *key) |
|
{ |
|
int rc = 0; |
|
u8 encr_type; |
|
u8 *addr; |
|
struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); |
|
struct mwl8k_priv *priv = hw->priv; |
|
|
|
if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw) |
|
return -EOPNOTSUPP; |
|
|
|
if (sta == NULL) |
|
addr = vif->addr; |
|
else |
|
addr = sta->addr; |
|
|
|
if (cmd_param == SET_KEY) { |
|
rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key); |
|
if (rc) |
|
goto out; |
|
|
|
if ((key->cipher == WLAN_CIPHER_SUITE_WEP40) |
|
|| (key->cipher == WLAN_CIPHER_SUITE_WEP104)) |
|
encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP; |
|
else |
|
encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED; |
|
|
|
rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr, |
|
encr_type); |
|
if (rc) |
|
goto out; |
|
|
|
mwl8k_vif->is_hw_crypto_enabled = true; |
|
|
|
} else { |
|
rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key); |
|
|
|
if (rc) |
|
goto out; |
|
} |
|
out: |
|
return rc; |
|
} |
|
|
|
/* |
|
* CMD_UPDATE_STADB. |
|
*/ |
|
struct ewc_ht_info { |
|
__le16 control1; |
|
__le16 control2; |
|
__le16 control3; |
|
} __packed; |
|
|
|
struct peer_capability_info { |
|
/* Peer type - AP vs. STA. */ |
|
__u8 peer_type; |
|
|
|
/* Basic 802.11 capabilities from assoc resp. */ |
|
__le16 basic_caps; |
|
|
|
/* Set if peer supports 802.11n high throughput (HT). */ |
|
__u8 ht_support; |
|
|
|
/* Valid if HT is supported. */ |
|
__le16 ht_caps; |
|
__u8 extended_ht_caps; |
|
struct ewc_ht_info ewc_info; |
|
|
|
/* Legacy rate table. Intersection of our rates and peer rates. */ |
|
__u8 legacy_rates[12]; |
|
|
|
/* HT rate table. Intersection of our rates and peer rates. */ |
|
__u8 ht_rates[16]; |
|
__u8 pad[16]; |
|
|
|
/* If set, interoperability mode, no proprietary extensions. */ |
|
__u8 interop; |
|
__u8 pad2; |
|
__u8 station_id; |
|
__le16 amsdu_enabled; |
|
} __packed; |
|
|
|
struct mwl8k_cmd_update_stadb { |
|
struct mwl8k_cmd_pkt header; |
|
|
|
/* See STADB_ACTION_TYPE */ |
|
__le32 action; |
|
|
|
/* Peer MAC address */ |
|
__u8 peer_addr[ETH_ALEN]; |
|
|
|
__le32 reserved; |
|
|
|
/* Peer info - valid during add/update. */ |
|
struct peer_capability_info peer_info; |
|
} __packed; |
|
|
|
#define MWL8K_STA_DB_MODIFY_ENTRY 1 |
|
#define MWL8K_STA_DB_DEL_ENTRY 2 |
|
|
|
/* Peer Entry flags - used to define the type of the peer node */ |
|
#define MWL8K_PEER_TYPE_ACCESSPOINT 2 |
|
|
|
static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta) |
|
{ |
|
struct mwl8k_cmd_update_stadb *cmd; |
|
struct peer_capability_info *p; |
|
u32 rates; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY); |
|
memcpy(cmd->peer_addr, sta->addr, ETH_ALEN); |
|
|
|
p = &cmd->peer_info; |
|
p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT; |
|
p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability); |
|
p->ht_support = sta->ht_cap.ht_supported; |
|
p->ht_caps = cpu_to_le16(sta->ht_cap.cap); |
|
p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) | |
|
((sta->ht_cap.ampdu_density & 7) << 2); |
|
if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) |
|
rates = sta->supp_rates[NL80211_BAND_2GHZ]; |
|
else |
|
rates = sta->supp_rates[NL80211_BAND_5GHZ] << 5; |
|
legacy_rate_mask_to_array(p->legacy_rates, rates); |
|
memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16); |
|
p->interop = 1; |
|
p->amsdu_enabled = 0; |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
if (!rc) |
|
rc = p->station_id; |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, u8 *addr) |
|
{ |
|
struct mwl8k_cmd_update_stadb *cmd; |
|
int rc; |
|
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
|
if (cmd == NULL) |
|
return -ENOMEM; |
|
|
|
cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); |
|
cmd->header.length = cpu_to_le16(sizeof(*cmd)); |
|
cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY); |
|
memcpy(cmd->peer_addr, addr, ETH_ALEN); |
|
|
|
rc = mwl8k_post_cmd(hw, &cmd->header); |
|
kfree(cmd); |
|
|
|
return rc; |
|
} |
|
|
|
|
|
/* |
|
* Interrupt handling. |
|
*/ |
|
static irqreturn_t mwl8k_interrupt(int irq, void *dev_id) |
|
{ |
|
struct ieee80211_hw *hw = dev_id; |
|
struct mwl8k_priv *priv = hw->priv; |
|
u32 status; |
|
|
|
status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); |
|
if (!status) |
|
return IRQ_NONE; |
|
|
|
if (status & MWL8K_A2H_INT_TX_DONE) { |
|
status &= ~MWL8K_A2H_INT_TX_DONE; |
|
tasklet_schedule(&priv->poll_tx_task); |
|
} |
|
|
|
if (status & MWL8K_A2H_INT_RX_READY) { |
|
status &= ~MWL8K_A2H_INT_RX_READY; |
|
tasklet_schedule(&priv->poll_rx_task); |
|
} |
|
|
|
if (status & MWL8K_A2H_INT_BA_WATCHDOG) { |
|
iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG, |
|
priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); |
|
|
|
atomic_inc(&priv->watchdog_event_pending); |
|
status &= ~MWL8K_A2H_INT_BA_WATCHDOG; |
|
ieee80211_queue_work(hw, &priv->watchdog_ba_handle); |
|
} |
|
|
|
if (status) |
|
iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); |
|
|
|
if (status & MWL8K_A2H_INT_OPC_DONE) { |
|
if (priv->hostcmd_wait != NULL) |
|
complete(priv->hostcmd_wait); |
|
} |
|
|
|
if (status & MWL8K_A2H_INT_QUEUE_EMPTY) { |
|
if (!mutex_is_locked(&priv->fw_mutex) && |
|
priv->radio_on && priv->pending_tx_pkts) |
|
mwl8k_tx_start(priv); |
|
} |
|
|
|
return IRQ_HANDLED; |
|
} |
|
|
|
static void mwl8k_tx_poll(struct tasklet_struct *t) |
|
{ |
|
struct mwl8k_priv *priv = from_tasklet(priv, t, poll_tx_task); |
|
struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev); |
|
int limit; |
|
int i; |
|
|
|
limit = 32; |
|
|
|
spin_lock(&priv->tx_lock); |
|
|
|
for (i = 0; i < mwl8k_tx_queues(priv); i++) |
|
limit -= mwl8k_txq_reclaim(hw, i, limit, 0); |
|
|
|
if (!priv->pending_tx_pkts && priv->tx_wait != NULL) { |
|
complete(priv->tx_wait); |
|
priv->tx_wait = NULL; |
|
} |
|
|
|
spin_unlock(&priv->tx_lock); |
|
|
|
if (limit) { |
|
writel(~MWL8K_A2H_INT_TX_DONE, |
|
priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); |
|
} else { |
|
tasklet_schedule(&priv->poll_tx_task); |
|
} |
|
} |
|
|
|
static void mwl8k_rx_poll(struct tasklet_struct *t) |
|
{ |
|
struct mwl8k_priv *priv = from_tasklet(priv, t, poll_rx_task); |
|
struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev); |
|
int limit; |
|
|
|
limit = 32; |
|
limit -= rxq_process(hw, 0, limit); |
|
limit -= rxq_refill(hw, 0, limit); |
|
|
|
if (limit) { |
|
writel(~MWL8K_A2H_INT_RX_READY, |
|
priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); |
|
} else { |
|
tasklet_schedule(&priv->poll_rx_task); |
|
} |
|
} |
|
|
|
|
|
/* |
|
* Core driver operations. |
|
*/ |
|
static void mwl8k_tx(struct ieee80211_hw *hw, |
|
struct ieee80211_tx_control *control, |
|
struct sk_buff *skb) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
int index = skb_get_queue_mapping(skb); |
|
|
|
if (!priv->radio_on) { |
|
wiphy_debug(hw->wiphy, |
|
"dropped TX frame since radio disabled\n"); |
|
dev_kfree_skb(skb); |
|
return; |
|
} |
|
|
|
mwl8k_txq_xmit(hw, index, control->sta, skb); |
|
} |
|
|
|
static int mwl8k_start(struct ieee80211_hw *hw) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
int rc; |
|
|
|
rc = request_irq(priv->pdev->irq, mwl8k_interrupt, |
|
IRQF_SHARED, MWL8K_NAME, hw); |
|
if (rc) { |
|
priv->irq = -1; |
|
wiphy_err(hw->wiphy, "failed to register IRQ handler\n"); |
|
return -EIO; |
|
} |
|
priv->irq = priv->pdev->irq; |
|
|
|
/* Enable TX reclaim and RX tasklets. */ |
|
tasklet_enable(&priv->poll_tx_task); |
|
tasklet_enable(&priv->poll_rx_task); |
|
|
|
/* Enable interrupts */ |
|
iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
|
iowrite32(MWL8K_A2H_EVENTS, |
|
priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); |
|
|
|
rc = mwl8k_fw_lock(hw); |
|
if (!rc) { |
|
rc = mwl8k_cmd_radio_enable(hw); |
|
|
|
if (!priv->ap_fw) { |
|
if (!rc) |
|
rc = mwl8k_cmd_enable_sniffer(hw, 0); |
|
|
|
if (!rc) |
|
rc = mwl8k_cmd_set_pre_scan(hw); |
|
|
|
if (!rc) |
|
rc = mwl8k_cmd_set_post_scan(hw, |
|
"\x00\x00\x00\x00\x00\x00"); |
|
} |
|
|
|
if (!rc) |
|
rc = mwl8k_cmd_set_rateadapt_mode(hw, 0); |
|
|
|
if (!rc) |
|
rc = mwl8k_cmd_set_wmm_mode(hw, 0); |
|
|
|
mwl8k_fw_unlock(hw); |
|
} |
|
|
|
if (rc) { |
|
iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
|
free_irq(priv->pdev->irq, hw); |
|
priv->irq = -1; |
|
tasklet_disable(&priv->poll_tx_task); |
|
tasklet_disable(&priv->poll_rx_task); |
|
} else { |
|
ieee80211_wake_queues(hw); |
|
} |
|
|
|
return rc; |
|
} |
|
|
|
static void mwl8k_stop(struct ieee80211_hw *hw) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
int i; |
|
|
|
if (!priv->hw_restart_in_progress) |
|
mwl8k_cmd_radio_disable(hw); |
|
|
|
ieee80211_stop_queues(hw); |
|
|
|
/* Disable interrupts */ |
|
iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
|
if (priv->irq != -1) { |
|
free_irq(priv->pdev->irq, hw); |
|
priv->irq = -1; |
|
} |
|
|
|
/* Stop finalize join worker */ |
|
cancel_work_sync(&priv->finalize_join_worker); |
|
cancel_work_sync(&priv->watchdog_ba_handle); |
|
if (priv->beacon_skb != NULL) |
|
dev_kfree_skb(priv->beacon_skb); |
|
|
|
/* Stop TX reclaim and RX tasklets. */ |
|
tasklet_disable(&priv->poll_tx_task); |
|
tasklet_disable(&priv->poll_rx_task); |
|
|
|
/* Return all skbs to mac80211 */ |
|
for (i = 0; i < mwl8k_tx_queues(priv); i++) |
|
mwl8k_txq_reclaim(hw, i, INT_MAX, 1); |
|
} |
|
|
|
static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image); |
|
|
|
static int mwl8k_add_interface(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_vif *mwl8k_vif; |
|
u32 macids_supported; |
|
int macid, rc; |
|
struct mwl8k_device_info *di; |
|
|
|
/* |
|
* Reject interface creation if sniffer mode is active, as |
|
* STA operation is mutually exclusive with hardware sniffer |
|
* mode. (Sniffer mode is only used on STA firmware.) |
|
*/ |
|
if (priv->sniffer_enabled) { |
|
wiphy_info(hw->wiphy, |
|
"unable to create STA interface because sniffer mode is enabled\n"); |
|
return -EINVAL; |
|
} |
|
|
|
di = priv->device_info; |
|
switch (vif->type) { |
|
case NL80211_IFTYPE_AP: |
|
if (!priv->ap_fw && di->fw_image_ap) { |
|
/* we must load the ap fw to meet this request */ |
|
if (!list_empty(&priv->vif_list)) |
|
return -EBUSY; |
|
rc = mwl8k_reload_firmware(hw, di->fw_image_ap); |
|
if (rc) |
|
return rc; |
|
} |
|
macids_supported = priv->ap_macids_supported; |
|
break; |
|
case NL80211_IFTYPE_STATION: |
|
if (priv->ap_fw && di->fw_image_sta) { |
|
if (!list_empty(&priv->vif_list)) { |
|
wiphy_warn(hw->wiphy, "AP interface is running.\n" |
|
"Adding STA interface for WDS"); |
|
} else { |
|
/* we must load the sta fw to |
|
* meet this request. |
|
*/ |
|
rc = mwl8k_reload_firmware(hw, |
|
di->fw_image_sta); |
|
if (rc) |
|
return rc; |
|
} |
|
} |
|
macids_supported = priv->sta_macids_supported; |
|
break; |
|
default: |
|
return -EINVAL; |
|
} |
|
|
|
macid = ffs(macids_supported & ~priv->macids_used); |
|
if (!macid--) |
|
return -EBUSY; |
|
|
|
/* Setup driver private area. */ |
|
mwl8k_vif = MWL8K_VIF(vif); |
|
memset(mwl8k_vif, 0, sizeof(*mwl8k_vif)); |
|
mwl8k_vif->vif = vif; |
|
mwl8k_vif->macid = macid; |
|
mwl8k_vif->seqno = 0; |
|
memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN); |
|
mwl8k_vif->is_hw_crypto_enabled = false; |
|
|
|
/* Set the mac address. */ |
|
mwl8k_cmd_set_mac_addr(hw, vif, vif->addr); |
|
|
|
if (vif->type == NL80211_IFTYPE_AP) |
|
mwl8k_cmd_set_new_stn_add_self(hw, vif); |
|
|
|
priv->macids_used |= 1 << mwl8k_vif->macid; |
|
list_add_tail(&mwl8k_vif->list, &priv->vif_list); |
|
|
|
return 0; |
|
} |
|
|
|
static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif) |
|
{ |
|
/* Has ieee80211_restart_hw re-added the removed interfaces? */ |
|
if (!priv->macids_used) |
|
return; |
|
|
|
priv->macids_used &= ~(1 << vif->macid); |
|
list_del(&vif->list); |
|
} |
|
|
|
static void mwl8k_remove_interface(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); |
|
|
|
if (vif->type == NL80211_IFTYPE_AP) |
|
mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr); |
|
|
|
mwl8k_cmd_del_mac_addr(hw, vif, vif->addr); |
|
|
|
mwl8k_remove_vif(priv, mwl8k_vif); |
|
} |
|
|
|
static void mwl8k_hw_restart_work(struct work_struct *work) |
|
{ |
|
struct mwl8k_priv *priv = |
|
container_of(work, struct mwl8k_priv, fw_reload); |
|
struct ieee80211_hw *hw = priv->hw; |
|
struct mwl8k_device_info *di; |
|
int rc; |
|
|
|
/* If some command is waiting for a response, clear it */ |
|
if (priv->hostcmd_wait != NULL) { |
|
complete(priv->hostcmd_wait); |
|
priv->hostcmd_wait = NULL; |
|
} |
|
|
|
priv->hw_restart_owner = current; |
|
di = priv->device_info; |
|
mwl8k_fw_lock(hw); |
|
|
|
if (priv->ap_fw) |
|
rc = mwl8k_reload_firmware(hw, di->fw_image_ap); |
|
else |
|
rc = mwl8k_reload_firmware(hw, di->fw_image_sta); |
|
|
|
if (rc) |
|
goto fail; |
|
|
|
priv->hw_restart_owner = NULL; |
|
priv->hw_restart_in_progress = false; |
|
|
|
/* |
|
* This unlock will wake up the queues and |
|
* also opens the command path for other |
|
* commands |
|
*/ |
|
mwl8k_fw_unlock(hw); |
|
|
|
ieee80211_restart_hw(hw); |
|
|
|
wiphy_err(hw->wiphy, "Firmware restarted successfully\n"); |
|
|
|
return; |
|
fail: |
|
mwl8k_fw_unlock(hw); |
|
|
|
wiphy_err(hw->wiphy, "Firmware restart failed\n"); |
|
} |
|
|
|
static int mwl8k_config(struct ieee80211_hw *hw, u32 changed) |
|
{ |
|
struct ieee80211_conf *conf = &hw->conf; |
|
struct mwl8k_priv *priv = hw->priv; |
|
int rc; |
|
|
|
rc = mwl8k_fw_lock(hw); |
|
if (rc) |
|
return rc; |
|
|
|
if (conf->flags & IEEE80211_CONF_IDLE) |
|
rc = mwl8k_cmd_radio_disable(hw); |
|
else |
|
rc = mwl8k_cmd_radio_enable(hw); |
|
if (rc) |
|
goto out; |
|
|
|
if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { |
|
rc = mwl8k_cmd_set_rf_channel(hw, conf); |
|
if (rc) |
|
goto out; |
|
} |
|
|
|
if (conf->power_level > 18) |
|
conf->power_level = 18; |
|
|
|
if (priv->ap_fw) { |
|
|
|
if (conf->flags & IEEE80211_CONF_CHANGE_POWER) { |
|
rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level); |
|
if (rc) |
|
goto out; |
|
} |
|
|
|
|
|
} else { |
|
rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level); |
|
if (rc) |
|
goto out; |
|
rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7); |
|
} |
|
|
|
out: |
|
mwl8k_fw_unlock(hw); |
|
|
|
return rc; |
|
} |
|
|
|
static void |
|
mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
|
struct ieee80211_bss_conf *info, u32 changed) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
u32 ap_legacy_rates = 0; |
|
u8 ap_mcs_rates[16]; |
|
int rc; |
|
|
|
if (mwl8k_fw_lock(hw)) |
|
return; |
|
|
|
/* |
|
* No need to capture a beacon if we're no longer associated. |
|
*/ |
|
if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc) |
|
priv->capture_beacon = false; |
|
|
|
/* |
|
* Get the AP's legacy and MCS rates. |
|
*/ |
|
if (vif->bss_conf.assoc) { |
|
struct ieee80211_sta *ap; |
|
|
|
rcu_read_lock(); |
|
|
|
ap = ieee80211_find_sta(vif, vif->bss_conf.bssid); |
|
if (ap == NULL) { |
|
rcu_read_unlock(); |
|
goto out; |
|
} |
|
|
|
if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) { |
|
ap_legacy_rates = ap->supp_rates[NL80211_BAND_2GHZ]; |
|
} else { |
|
ap_legacy_rates = |
|
ap->supp_rates[NL80211_BAND_5GHZ] << 5; |
|
} |
|
memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16); |
|
|
|
rcu_read_unlock(); |
|
|
|
if (changed & BSS_CHANGED_ASSOC) { |
|
if (!priv->ap_fw) { |
|
rc = mwl8k_cmd_set_rate(hw, vif, |
|
ap_legacy_rates, |
|
ap_mcs_rates); |
|
if (rc) |
|
goto out; |
|
|
|
rc = mwl8k_cmd_use_fixed_rate_sta(hw); |
|
if (rc) |
|
goto out; |
|
} else { |
|
int idx; |
|
int rate; |
|
|
|
/* Use AP firmware specific rate command. |
|
*/ |
|
idx = ffs(vif->bss_conf.basic_rates); |
|
if (idx) |
|
idx--; |
|
|
|
if (hw->conf.chandef.chan->band == |
|
NL80211_BAND_2GHZ) |
|
rate = mwl8k_rates_24[idx].hw_value; |
|
else |
|
rate = mwl8k_rates_50[idx].hw_value; |
|
|
|
mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate); |
|
} |
|
} |
|
} |
|
|
|
if (changed & BSS_CHANGED_ERP_PREAMBLE) { |
|
rc = mwl8k_set_radio_preamble(hw, |
|
vif->bss_conf.use_short_preamble); |
|
if (rc) |
|
goto out; |
|
} |
|
|
|
if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw) { |
|
rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot); |
|
if (rc) |
|
goto out; |
|
} |
|
|
|
if (vif->bss_conf.assoc && !priv->ap_fw && |
|
(changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT | |
|
BSS_CHANGED_HT))) { |
|
rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates); |
|
if (rc) |
|
goto out; |
|
} |
|
|
|
if (vif->bss_conf.assoc && |
|
(changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) { |
|
/* |
|
* Finalize the join. Tell rx handler to process |
|
* next beacon from our BSSID. |
|
*/ |
|
memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN); |
|
priv->capture_beacon = true; |
|
} |
|
|
|
out: |
|
mwl8k_fw_unlock(hw); |
|
} |
|
|
|
static void |
|
mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
|
struct ieee80211_bss_conf *info, u32 changed) |
|
{ |
|
int rc; |
|
|
|
if (mwl8k_fw_lock(hw)) |
|
return; |
|
|
|
if (changed & BSS_CHANGED_ERP_PREAMBLE) { |
|
rc = mwl8k_set_radio_preamble(hw, |
|
vif->bss_conf.use_short_preamble); |
|
if (rc) |
|
goto out; |
|
} |
|
|
|
if (changed & BSS_CHANGED_BASIC_RATES) { |
|
int idx; |
|
int rate; |
|
|
|
/* |
|
* Use lowest supported basic rate for multicasts |
|
* and management frames (such as probe responses -- |
|
* beacons will always go out at 1 Mb/s). |
|
*/ |
|
idx = ffs(vif->bss_conf.basic_rates); |
|
if (idx) |
|
idx--; |
|
|
|
if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) |
|
rate = mwl8k_rates_24[idx].hw_value; |
|
else |
|
rate = mwl8k_rates_50[idx].hw_value; |
|
|
|
mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate); |
|
} |
|
|
|
if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) { |
|
struct sk_buff *skb; |
|
|
|
skb = ieee80211_beacon_get(hw, vif); |
|
if (skb != NULL) { |
|
mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len); |
|
kfree_skb(skb); |
|
} |
|
} |
|
|
|
if (changed & BSS_CHANGED_BEACON_ENABLED) |
|
mwl8k_cmd_bss_start(hw, vif, info->enable_beacon); |
|
|
|
out: |
|
mwl8k_fw_unlock(hw); |
|
} |
|
|
|
static void |
|
mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
|
struct ieee80211_bss_conf *info, u32 changed) |
|
{ |
|
if (vif->type == NL80211_IFTYPE_STATION) |
|
mwl8k_bss_info_changed_sta(hw, vif, info, changed); |
|
if (vif->type == NL80211_IFTYPE_AP) |
|
mwl8k_bss_info_changed_ap(hw, vif, info, changed); |
|
} |
|
|
|
static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw, |
|
struct netdev_hw_addr_list *mc_list) |
|
{ |
|
struct mwl8k_cmd_pkt *cmd; |
|
|
|
/* |
|
* Synthesize and return a command packet that programs the |
|
* hardware multicast address filter. At this point we don't |
|
* know whether FIF_ALLMULTI is being requested, but if it is, |
|
* we'll end up throwing this packet away and creating a new |
|
* one in mwl8k_configure_filter(). |
|
*/ |
|
cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list); |
|
|
|
return (unsigned long)cmd; |
|
} |
|
|
|
static int |
|
mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw, |
|
unsigned int changed_flags, |
|
unsigned int *total_flags) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
|
|
/* |
|
* Hardware sniffer mode is mutually exclusive with STA |
|
* operation, so refuse to enable sniffer mode if a STA |
|
* interface is active. |
|
*/ |
|
if (!list_empty(&priv->vif_list)) { |
|
if (net_ratelimit()) |
|
wiphy_info(hw->wiphy, |
|
"not enabling sniffer mode because STA interface is active\n"); |
|
return 0; |
|
} |
|
|
|
if (!priv->sniffer_enabled) { |
|
if (mwl8k_cmd_enable_sniffer(hw, 1)) |
|
return 0; |
|
priv->sniffer_enabled = true; |
|
} |
|
|
|
*total_flags &= FIF_ALLMULTI | |
|
FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL | |
|
FIF_OTHER_BSS; |
|
|
|
return 1; |
|
} |
|
|
|
static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv) |
|
{ |
|
if (!list_empty(&priv->vif_list)) |
|
return list_entry(priv->vif_list.next, struct mwl8k_vif, list); |
|
|
|
return NULL; |
|
} |
|
|
|
static void mwl8k_configure_filter(struct ieee80211_hw *hw, |
|
unsigned int changed_flags, |
|
unsigned int *total_flags, |
|
u64 multicast) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast; |
|
|
|
/* |
|
* AP firmware doesn't allow fine-grained control over |
|
* the receive filter. |
|
*/ |
|
if (priv->ap_fw) { |
|
*total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC; |
|
kfree(cmd); |
|
return; |
|
} |
|
|
|
/* |
|
* Enable hardware sniffer mode if FIF_CONTROL or |
|
* FIF_OTHER_BSS is requested. |
|
*/ |
|
if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) && |
|
mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) { |
|
kfree(cmd); |
|
return; |
|
} |
|
|
|
/* Clear unsupported feature flags */ |
|
*total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC; |
|
|
|
if (mwl8k_fw_lock(hw)) { |
|
kfree(cmd); |
|
return; |
|
} |
|
|
|
if (priv->sniffer_enabled) { |
|
mwl8k_cmd_enable_sniffer(hw, 0); |
|
priv->sniffer_enabled = false; |
|
} |
|
|
|
if (changed_flags & FIF_BCN_PRBRESP_PROMISC) { |
|
if (*total_flags & FIF_BCN_PRBRESP_PROMISC) { |
|
/* |
|
* Disable the BSS filter. |
|
*/ |
|
mwl8k_cmd_set_pre_scan(hw); |
|
} else { |
|
struct mwl8k_vif *mwl8k_vif; |
|
const u8 *bssid; |
|
|
|
/* |
|
* Enable the BSS filter. |
|
* |
|
* If there is an active STA interface, use that |
|
* interface's BSSID, otherwise use a dummy one |
|
* (where the OUI part needs to be nonzero for |
|
* the BSSID to be accepted by POST_SCAN). |
|
*/ |
|
mwl8k_vif = mwl8k_first_vif(priv); |
|
if (mwl8k_vif != NULL) |
|
bssid = mwl8k_vif->vif->bss_conf.bssid; |
|
else |
|
bssid = "\x01\x00\x00\x00\x00\x00"; |
|
|
|
mwl8k_cmd_set_post_scan(hw, bssid); |
|
} |
|
} |
|
|
|
/* |
|
* If FIF_ALLMULTI is being requested, throw away the command |
|
* packet that ->prepare_multicast() built and replace it with |
|
* a command packet that enables reception of all multicast |
|
* packets. |
|
*/ |
|
if (*total_flags & FIF_ALLMULTI) { |
|
kfree(cmd); |
|
cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL); |
|
} |
|
|
|
if (cmd != NULL) { |
|
mwl8k_post_cmd(hw, cmd); |
|
kfree(cmd); |
|
} |
|
|
|
mwl8k_fw_unlock(hw); |
|
} |
|
|
|
static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value) |
|
{ |
|
return mwl8k_cmd_set_rts_threshold(hw, value); |
|
} |
|
|
|
static int mwl8k_sta_remove(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
|
|
if (priv->ap_fw) |
|
return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr); |
|
else |
|
return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr); |
|
} |
|
|
|
static int mwl8k_sta_add(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
int ret; |
|
int i; |
|
struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); |
|
struct ieee80211_key_conf *key; |
|
|
|
if (!priv->ap_fw) { |
|
ret = mwl8k_cmd_update_stadb_add(hw, vif, sta); |
|
if (ret >= 0) { |
|
MWL8K_STA(sta)->peer_id = ret; |
|
if (sta->ht_cap.ht_supported) |
|
MWL8K_STA(sta)->is_ampdu_allowed = true; |
|
ret = 0; |
|
} |
|
|
|
} else { |
|
ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta); |
|
} |
|
|
|
for (i = 0; i < NUM_WEP_KEYS; i++) { |
|
key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key); |
|
if (mwl8k_vif->wep_key_conf[i].enabled) |
|
mwl8k_set_key(hw, SET_KEY, vif, sta, key); |
|
} |
|
return ret; |
|
} |
|
|
|
static int mwl8k_conf_tx(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, u16 queue, |
|
const struct ieee80211_tx_queue_params *params) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
int rc; |
|
|
|
rc = mwl8k_fw_lock(hw); |
|
if (!rc) { |
|
BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1); |
|
memcpy(&priv->wmm_params[queue], params, sizeof(*params)); |
|
|
|
if (!priv->wmm_enabled) |
|
rc = mwl8k_cmd_set_wmm_mode(hw, 1); |
|
|
|
if (!rc) { |
|
int q = MWL8K_TX_WMM_QUEUES - 1 - queue; |
|
rc = mwl8k_cmd_set_edca_params(hw, q, |
|
params->cw_min, |
|
params->cw_max, |
|
params->aifs, |
|
params->txop); |
|
} |
|
|
|
mwl8k_fw_unlock(hw); |
|
} |
|
|
|
return rc; |
|
} |
|
|
|
static int mwl8k_get_stats(struct ieee80211_hw *hw, |
|
struct ieee80211_low_level_stats *stats) |
|
{ |
|
return mwl8k_cmd_get_stat(hw, stats); |
|
} |
|
|
|
static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx, |
|
struct survey_info *survey) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct ieee80211_conf *conf = &hw->conf; |
|
struct ieee80211_supported_band *sband; |
|
|
|
if (priv->ap_fw) { |
|
sband = hw->wiphy->bands[NL80211_BAND_2GHZ]; |
|
|
|
if (sband && idx >= sband->n_channels) { |
|
idx -= sband->n_channels; |
|
sband = NULL; |
|
} |
|
|
|
if (!sband) |
|
sband = hw->wiphy->bands[NL80211_BAND_5GHZ]; |
|
|
|
if (!sband || idx >= sband->n_channels) |
|
return -ENOENT; |
|
|
|
memcpy(survey, &priv->survey[idx], sizeof(*survey)); |
|
survey->channel = &sband->channels[idx]; |
|
|
|
return 0; |
|
} |
|
|
|
if (idx != 0) |
|
return -ENOENT; |
|
|
|
survey->channel = conf->chandef.chan; |
|
survey->filled = SURVEY_INFO_NOISE_DBM; |
|
survey->noise = priv->noise; |
|
|
|
return 0; |
|
} |
|
|
|
#define MAX_AMPDU_ATTEMPTS 5 |
|
|
|
static int |
|
mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
|
struct ieee80211_ampdu_params *params) |
|
{ |
|
struct ieee80211_sta *sta = params->sta; |
|
enum ieee80211_ampdu_mlme_action action = params->action; |
|
u16 tid = params->tid; |
|
u16 *ssn = ¶ms->ssn; |
|
u8 buf_size = params->buf_size; |
|
int i, rc = 0; |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_ampdu_stream *stream; |
|
u8 *addr = sta->addr, idx; |
|
struct mwl8k_sta *sta_info = MWL8K_STA(sta); |
|
|
|
if (!ieee80211_hw_check(hw, AMPDU_AGGREGATION)) |
|
return -ENOTSUPP; |
|
|
|
spin_lock(&priv->stream_lock); |
|
stream = mwl8k_lookup_stream(hw, addr, tid); |
|
|
|
switch (action) { |
|
case IEEE80211_AMPDU_RX_START: |
|
case IEEE80211_AMPDU_RX_STOP: |
|
break; |
|
case IEEE80211_AMPDU_TX_START: |
|
/* By the time we get here the hw queues may contain outgoing |
|
* packets for this RA/TID that are not part of this BA |
|
* session. The hw will assign sequence numbers to these |
|
* packets as they go out. So if we query the hw for its next |
|
* sequence number and use that for the SSN here, it may end up |
|
* being wrong, which will lead to sequence number mismatch at |
|
* the recipient. To avoid this, we reset the sequence number |
|
* to O for the first MPDU in this BA stream. |
|
*/ |
|
*ssn = 0; |
|
if (stream == NULL) { |
|
/* This means that somebody outside this driver called |
|
* ieee80211_start_tx_ba_session. This is unexpected |
|
* because we do our own rate control. Just warn and |
|
* move on. |
|
*/ |
|
wiphy_warn(hw->wiphy, "Unexpected call to %s. " |
|
"Proceeding anyway.\n", __func__); |
|
stream = mwl8k_add_stream(hw, sta, tid); |
|
} |
|
if (stream == NULL) { |
|
wiphy_debug(hw->wiphy, "no free AMPDU streams\n"); |
|
rc = -EBUSY; |
|
break; |
|
} |
|
stream->state = AMPDU_STREAM_IN_PROGRESS; |
|
|
|
/* Release the lock before we do the time consuming stuff */ |
|
spin_unlock(&priv->stream_lock); |
|
for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) { |
|
|
|
/* Check if link is still valid */ |
|
if (!sta_info->is_ampdu_allowed) { |
|
spin_lock(&priv->stream_lock); |
|
mwl8k_remove_stream(hw, stream); |
|
spin_unlock(&priv->stream_lock); |
|
return -EBUSY; |
|
} |
|
|
|
rc = mwl8k_check_ba(hw, stream, vif); |
|
|
|
/* If HW restart is in progress mwl8k_post_cmd will |
|
* return -EBUSY. Avoid retrying mwl8k_check_ba in |
|
* such cases |
|
*/ |
|
if (!rc || rc == -EBUSY) |
|
break; |
|
/* |
|
* HW queues take time to be flushed, give them |
|
* sufficient time |
|
*/ |
|
|
|
msleep(1000); |
|
} |
|
spin_lock(&priv->stream_lock); |
|
if (rc) { |
|
wiphy_err(hw->wiphy, "Stream for tid %d busy after %d" |
|
" attempts\n", tid, MAX_AMPDU_ATTEMPTS); |
|
mwl8k_remove_stream(hw, stream); |
|
rc = -EBUSY; |
|
break; |
|
} |
|
rc = IEEE80211_AMPDU_TX_START_IMMEDIATE; |
|
break; |
|
case IEEE80211_AMPDU_TX_STOP_CONT: |
|
case IEEE80211_AMPDU_TX_STOP_FLUSH: |
|
case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: |
|
if (stream) { |
|
if (stream->state == AMPDU_STREAM_ACTIVE) { |
|
idx = stream->idx; |
|
spin_unlock(&priv->stream_lock); |
|
mwl8k_destroy_ba(hw, idx); |
|
spin_lock(&priv->stream_lock); |
|
} |
|
mwl8k_remove_stream(hw, stream); |
|
} |
|
ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid); |
|
break; |
|
case IEEE80211_AMPDU_TX_OPERATIONAL: |
|
BUG_ON(stream == NULL); |
|
BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS); |
|
spin_unlock(&priv->stream_lock); |
|
rc = mwl8k_create_ba(hw, stream, buf_size, vif); |
|
spin_lock(&priv->stream_lock); |
|
if (!rc) |
|
stream->state = AMPDU_STREAM_ACTIVE; |
|
else { |
|
idx = stream->idx; |
|
spin_unlock(&priv->stream_lock); |
|
mwl8k_destroy_ba(hw, idx); |
|
spin_lock(&priv->stream_lock); |
|
wiphy_debug(hw->wiphy, |
|
"Failed adding stream for sta %pM tid %d\n", |
|
addr, tid); |
|
mwl8k_remove_stream(hw, stream); |
|
} |
|
break; |
|
|
|
default: |
|
rc = -ENOTSUPP; |
|
} |
|
|
|
spin_unlock(&priv->stream_lock); |
|
return rc; |
|
} |
|
|
|
static void mwl8k_sw_scan_start(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
const u8 *mac_addr) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
u8 tmp; |
|
|
|
if (!priv->ap_fw) |
|
return; |
|
|
|
/* clear all stats */ |
|
priv->channel_time = 0; |
|
ioread32(priv->regs + BBU_RXRDY_CNT_REG); |
|
ioread32(priv->regs + NOK_CCA_CNT_REG); |
|
mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp); |
|
|
|
priv->sw_scan_start = true; |
|
} |
|
|
|
static void mwl8k_sw_scan_complete(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
u8 tmp; |
|
|
|
if (!priv->ap_fw) |
|
return; |
|
|
|
priv->sw_scan_start = false; |
|
|
|
/* clear all stats */ |
|
priv->channel_time = 0; |
|
ioread32(priv->regs + BBU_RXRDY_CNT_REG); |
|
ioread32(priv->regs + NOK_CCA_CNT_REG); |
|
mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp); |
|
} |
|
|
|
static const struct ieee80211_ops mwl8k_ops = { |
|
.tx = mwl8k_tx, |
|
.start = mwl8k_start, |
|
.stop = mwl8k_stop, |
|
.add_interface = mwl8k_add_interface, |
|
.remove_interface = mwl8k_remove_interface, |
|
.config = mwl8k_config, |
|
.bss_info_changed = mwl8k_bss_info_changed, |
|
.prepare_multicast = mwl8k_prepare_multicast, |
|
.configure_filter = mwl8k_configure_filter, |
|
.set_key = mwl8k_set_key, |
|
.set_rts_threshold = mwl8k_set_rts_threshold, |
|
.sta_add = mwl8k_sta_add, |
|
.sta_remove = mwl8k_sta_remove, |
|
.conf_tx = mwl8k_conf_tx, |
|
.get_stats = mwl8k_get_stats, |
|
.get_survey = mwl8k_get_survey, |
|
.ampdu_action = mwl8k_ampdu_action, |
|
.sw_scan_start = mwl8k_sw_scan_start, |
|
.sw_scan_complete = mwl8k_sw_scan_complete, |
|
}; |
|
|
|
static void mwl8k_finalize_join_worker(struct work_struct *work) |
|
{ |
|
struct mwl8k_priv *priv = |
|
container_of(work, struct mwl8k_priv, finalize_join_worker); |
|
struct sk_buff *skb = priv->beacon_skb; |
|
struct ieee80211_mgmt *mgmt = (void *)skb->data; |
|
int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable); |
|
const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM, |
|
mgmt->u.beacon.variable, len); |
|
int dtim_period = 1; |
|
|
|
if (tim && tim[1] >= 2) |
|
dtim_period = tim[3]; |
|
|
|
mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period); |
|
|
|
dev_kfree_skb(skb); |
|
priv->beacon_skb = NULL; |
|
} |
|
|
|
enum { |
|
MWL8363 = 0, |
|
MWL8687, |
|
MWL8366, |
|
MWL8764, |
|
}; |
|
|
|
#define MWL8K_8366_AP_FW_API 3 |
|
#define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw" |
|
#define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api) |
|
|
|
#define MWL8K_8764_AP_FW_API 1 |
|
#define _MWL8K_8764_AP_FW(api) "mwl8k/fmimage_8764_ap-" #api ".fw" |
|
#define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api) |
|
|
|
static struct mwl8k_device_info mwl8k_info_tbl[] = { |
|
[MWL8363] = { |
|
.part_name = "88w8363", |
|
.helper_image = "mwl8k/helper_8363.fw", |
|
.fw_image_sta = "mwl8k/fmimage_8363.fw", |
|
}, |
|
[MWL8687] = { |
|
.part_name = "88w8687", |
|
.helper_image = "mwl8k/helper_8687.fw", |
|
.fw_image_sta = "mwl8k/fmimage_8687.fw", |
|
}, |
|
[MWL8366] = { |
|
.part_name = "88w8366", |
|
.helper_image = "mwl8k/helper_8366.fw", |
|
.fw_image_sta = "mwl8k/fmimage_8366.fw", |
|
.fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API), |
|
.fw_api_ap = MWL8K_8366_AP_FW_API, |
|
.ap_rxd_ops = &rxd_ap_ops, |
|
}, |
|
[MWL8764] = { |
|
.part_name = "88w8764", |
|
.fw_image_ap = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API), |
|
.fw_api_ap = MWL8K_8764_AP_FW_API, |
|
.ap_rxd_ops = &rxd_ap_ops, |
|
}, |
|
}; |
|
|
|
MODULE_FIRMWARE("mwl8k/helper_8363.fw"); |
|
MODULE_FIRMWARE("mwl8k/fmimage_8363.fw"); |
|
MODULE_FIRMWARE("mwl8k/helper_8687.fw"); |
|
MODULE_FIRMWARE("mwl8k/fmimage_8687.fw"); |
|
MODULE_FIRMWARE("mwl8k/helper_8366.fw"); |
|
MODULE_FIRMWARE("mwl8k/fmimage_8366.fw"); |
|
MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API)); |
|
|
|
static const struct pci_device_id mwl8k_pci_id_table[] = { |
|
{ PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, }, |
|
{ PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, }, |
|
{ PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, }, |
|
{ PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, }, |
|
{ PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, }, |
|
{ PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, }, |
|
{ PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, }, |
|
{ PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, }, |
|
{ PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, }, |
|
{ PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, }, |
|
{ }, |
|
}; |
|
MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table); |
|
|
|
static int mwl8k_request_alt_fw(struct mwl8k_priv *priv) |
|
{ |
|
int rc; |
|
printk(KERN_ERR "%s: Error requesting preferred fw %s.\n" |
|
"Trying alternative firmware %s\n", pci_name(priv->pdev), |
|
priv->fw_pref, priv->fw_alt); |
|
rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true); |
|
if (rc) { |
|
printk(KERN_ERR "%s: Error requesting alt fw %s\n", |
|
pci_name(priv->pdev), priv->fw_alt); |
|
return rc; |
|
} |
|
return 0; |
|
} |
|
|
|
static int mwl8k_firmware_load_success(struct mwl8k_priv *priv); |
|
static void mwl8k_fw_state_machine(const struct firmware *fw, void *context) |
|
{ |
|
struct mwl8k_priv *priv = context; |
|
struct mwl8k_device_info *di = priv->device_info; |
|
int rc; |
|
|
|
switch (priv->fw_state) { |
|
case FW_STATE_INIT: |
|
if (!fw) { |
|
printk(KERN_ERR "%s: Error requesting helper fw %s\n", |
|
pci_name(priv->pdev), di->helper_image); |
|
goto fail; |
|
} |
|
priv->fw_helper = fw; |
|
rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode, |
|
true); |
|
if (rc && priv->fw_alt) { |
|
rc = mwl8k_request_alt_fw(priv); |
|
if (rc) |
|
goto fail; |
|
priv->fw_state = FW_STATE_LOADING_ALT; |
|
} else if (rc) |
|
goto fail; |
|
else |
|
priv->fw_state = FW_STATE_LOADING_PREF; |
|
break; |
|
|
|
case FW_STATE_LOADING_PREF: |
|
if (!fw) { |
|
if (priv->fw_alt) { |
|
rc = mwl8k_request_alt_fw(priv); |
|
if (rc) |
|
goto fail; |
|
priv->fw_state = FW_STATE_LOADING_ALT; |
|
} else |
|
goto fail; |
|
} else { |
|
priv->fw_ucode = fw; |
|
rc = mwl8k_firmware_load_success(priv); |
|
if (rc) |
|
goto fail; |
|
else |
|
complete(&priv->firmware_loading_complete); |
|
} |
|
break; |
|
|
|
case FW_STATE_LOADING_ALT: |
|
if (!fw) { |
|
printk(KERN_ERR "%s: Error requesting alt fw %s\n", |
|
pci_name(priv->pdev), di->helper_image); |
|
goto fail; |
|
} |
|
priv->fw_ucode = fw; |
|
rc = mwl8k_firmware_load_success(priv); |
|
if (rc) |
|
goto fail; |
|
else |
|
complete(&priv->firmware_loading_complete); |
|
break; |
|
|
|
default: |
|
printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n", |
|
MWL8K_NAME, priv->fw_state); |
|
BUG_ON(1); |
|
} |
|
|
|
return; |
|
|
|
fail: |
|
priv->fw_state = FW_STATE_ERROR; |
|
complete(&priv->firmware_loading_complete); |
|
device_release_driver(&priv->pdev->dev); |
|
mwl8k_release_firmware(priv); |
|
} |
|
|
|
#define MAX_RESTART_ATTEMPTS 1 |
|
static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image, |
|
bool nowait) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
int rc; |
|
int count = MAX_RESTART_ATTEMPTS; |
|
|
|
retry: |
|
/* Reset firmware and hardware */ |
|
mwl8k_hw_reset(priv); |
|
|
|
/* Ask userland hotplug daemon for the device firmware */ |
|
rc = mwl8k_request_firmware(priv, fw_image, nowait); |
|
if (rc) { |
|
wiphy_err(hw->wiphy, "Firmware files not found\n"); |
|
return rc; |
|
} |
|
|
|
if (nowait) |
|
return rc; |
|
|
|
/* Load firmware into hardware */ |
|
rc = mwl8k_load_firmware(hw); |
|
if (rc) |
|
wiphy_err(hw->wiphy, "Cannot start firmware\n"); |
|
|
|
/* Reclaim memory once firmware is successfully loaded */ |
|
mwl8k_release_firmware(priv); |
|
|
|
if (rc && count) { |
|
/* FW did not start successfully; |
|
* lets try one more time |
|
*/ |
|
count--; |
|
wiphy_err(hw->wiphy, "Trying to reload the firmware again\n"); |
|
msleep(20); |
|
goto retry; |
|
} |
|
|
|
return rc; |
|
} |
|
|
|
static int mwl8k_init_txqs(struct ieee80211_hw *hw) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
int rc = 0; |
|
int i; |
|
|
|
for (i = 0; i < mwl8k_tx_queues(priv); i++) { |
|
rc = mwl8k_txq_init(hw, i); |
|
if (rc) |
|
break; |
|
if (priv->ap_fw) |
|
iowrite32(priv->txq[i].txd_dma, |
|
priv->sram + priv->txq_offset[i]); |
|
} |
|
return rc; |
|
} |
|
|
|
/* initialize hw after successfully loading a firmware image */ |
|
static int mwl8k_probe_hw(struct ieee80211_hw *hw) |
|
{ |
|
struct mwl8k_priv *priv = hw->priv; |
|
int rc = 0; |
|
int i; |
|
|
|
if (priv->ap_fw) { |
|
priv->rxd_ops = priv->device_info->ap_rxd_ops; |
|
if (priv->rxd_ops == NULL) { |
|
wiphy_err(hw->wiphy, |
|
"Driver does not have AP firmware image support for this hardware\n"); |
|
rc = -ENOENT; |
|
goto err_stop_firmware; |
|
} |
|
} else { |
|
priv->rxd_ops = &rxd_sta_ops; |
|
} |
|
|
|
priv->sniffer_enabled = false; |
|
priv->wmm_enabled = false; |
|
priv->pending_tx_pkts = 0; |
|
atomic_set(&priv->watchdog_event_pending, 0); |
|
|
|
rc = mwl8k_rxq_init(hw, 0); |
|
if (rc) |
|
goto err_stop_firmware; |
|
rxq_refill(hw, 0, INT_MAX); |
|
|
|
/* For the sta firmware, we need to know the dma addresses of tx queues |
|
* before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them |
|
* prior to issuing this command. But for the AP case, we learn the |
|
* total number of queues from the result CMD_GET_HW_SPEC, so for this |
|
* case we must initialize the tx queues after. |
|
*/ |
|
priv->num_ampdu_queues = 0; |
|
if (!priv->ap_fw) { |
|
rc = mwl8k_init_txqs(hw); |
|
if (rc) |
|
goto err_free_queues; |
|
} |
|
|
|
iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); |
|
iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
|
iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY| |
|
MWL8K_A2H_INT_BA_WATCHDOG, |
|
priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL); |
|
iowrite32(MWL8K_A2H_INT_OPC_DONE, |
|
priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); |
|
|
|
rc = request_irq(priv->pdev->irq, mwl8k_interrupt, |
|
IRQF_SHARED, MWL8K_NAME, hw); |
|
if (rc) { |
|
wiphy_err(hw->wiphy, "failed to register IRQ handler\n"); |
|
goto err_free_queues; |
|
} |
|
|
|
/* |
|
* When hw restart is requested, |
|
* mac80211 will take care of clearing |
|
* the ampdu streams, so do not clear |
|
* the ampdu state here |
|
*/ |
|
if (!priv->hw_restart_in_progress) |
|
memset(priv->ampdu, 0, sizeof(priv->ampdu)); |
|
|
|
/* |
|
* Temporarily enable interrupts. Initial firmware host |
|
* commands use interrupts and avoid polling. Disable |
|
* interrupts when done. |
|
*/ |
|
iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
|
|
|
/* Get config data, mac addrs etc */ |
|
if (priv->ap_fw) { |
|
rc = mwl8k_cmd_get_hw_spec_ap(hw); |
|
if (!rc) |
|
rc = mwl8k_init_txqs(hw); |
|
if (!rc) |
|
rc = mwl8k_cmd_set_hw_spec(hw); |
|
} else { |
|
rc = mwl8k_cmd_get_hw_spec_sta(hw); |
|
} |
|
if (rc) { |
|
wiphy_err(hw->wiphy, "Cannot initialise firmware\n"); |
|
goto err_free_irq; |
|
} |
|
|
|
/* Turn radio off */ |
|
rc = mwl8k_cmd_radio_disable(hw); |
|
if (rc) { |
|
wiphy_err(hw->wiphy, "Cannot disable\n"); |
|
goto err_free_irq; |
|
} |
|
|
|
/* Clear MAC address */ |
|
rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00"); |
|
if (rc) { |
|
wiphy_err(hw->wiphy, "Cannot clear MAC address\n"); |
|
goto err_free_irq; |
|
} |
|
|
|
/* Configure Antennas */ |
|
rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3); |
|
if (rc) |
|
wiphy_warn(hw->wiphy, "failed to set # of RX antennas"); |
|
rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7); |
|
if (rc) |
|
wiphy_warn(hw->wiphy, "failed to set # of TX antennas"); |
|
|
|
|
|
/* Disable interrupts */ |
|
iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
|
free_irq(priv->pdev->irq, hw); |
|
|
|
wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n", |
|
priv->device_info->part_name, |
|
priv->hw_rev, hw->wiphy->perm_addr, |
|
priv->ap_fw ? "AP" : "STA", |
|
(priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff, |
|
(priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff); |
|
|
|
return 0; |
|
|
|
err_free_irq: |
|
iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
|
free_irq(priv->pdev->irq, hw); |
|
|
|
err_free_queues: |
|
for (i = 0; i < mwl8k_tx_queues(priv); i++) |
|
mwl8k_txq_deinit(hw, i); |
|
mwl8k_rxq_deinit(hw, 0); |
|
|
|
err_stop_firmware: |
|
mwl8k_hw_reset(priv); |
|
|
|
return rc; |
|
} |
|
|
|
/* |
|
* invoke mwl8k_reload_firmware to change the firmware image after the device |
|
* has already been registered |
|
*/ |
|
static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image) |
|
{ |
|
int i, rc = 0; |
|
struct mwl8k_priv *priv = hw->priv; |
|
struct mwl8k_vif *vif, *tmp_vif; |
|
|
|
mwl8k_stop(hw); |
|
mwl8k_rxq_deinit(hw, 0); |
|
|
|
/* |
|
* All the existing interfaces are re-added by the ieee80211_reconfig; |
|
* which means driver should remove existing interfaces before calling |
|
* ieee80211_restart_hw |
|
*/ |
|
if (priv->hw_restart_in_progress) |
|
list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list) |
|
mwl8k_remove_vif(priv, vif); |
|
|
|
for (i = 0; i < mwl8k_tx_queues(priv); i++) |
|
mwl8k_txq_deinit(hw, i); |
|
|
|
rc = mwl8k_init_firmware(hw, fw_image, false); |
|
if (rc) |
|
goto fail; |
|
|
|
rc = mwl8k_probe_hw(hw); |
|
if (rc) |
|
goto fail; |
|
|
|
if (priv->hw_restart_in_progress) |
|
return rc; |
|
|
|
rc = mwl8k_start(hw); |
|
if (rc) |
|
goto fail; |
|
|
|
rc = mwl8k_config(hw, ~0); |
|
if (rc) |
|
goto fail; |
|
|
|
for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) { |
|
rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]); |
|
if (rc) |
|
goto fail; |
|
} |
|
|
|
return rc; |
|
|
|
fail: |
|
printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n"); |
|
return rc; |
|
} |
|
|
|
static const struct ieee80211_iface_limit ap_if_limits[] = { |
|
{ .max = 8, .types = BIT(NL80211_IFTYPE_AP) }, |
|
{ .max = 1, .types = BIT(NL80211_IFTYPE_STATION) }, |
|
}; |
|
|
|
static const struct ieee80211_iface_combination ap_if_comb = { |
|
.limits = ap_if_limits, |
|
.n_limits = ARRAY_SIZE(ap_if_limits), |
|
.max_interfaces = 8, |
|
.num_different_channels = 1, |
|
}; |
|
|
|
|
|
static int mwl8k_firmware_load_success(struct mwl8k_priv *priv) |
|
{ |
|
struct ieee80211_hw *hw = priv->hw; |
|
int i, rc; |
|
|
|
rc = mwl8k_load_firmware(hw); |
|
mwl8k_release_firmware(priv); |
|
if (rc) { |
|
wiphy_err(hw->wiphy, "Cannot start firmware\n"); |
|
return rc; |
|
} |
|
|
|
/* |
|
* Extra headroom is the size of the required DMA header |
|
* minus the size of the smallest 802.11 frame (CTS frame). |
|
*/ |
|
hw->extra_tx_headroom = |
|
sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts); |
|
|
|
hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0; |
|
|
|
hw->queues = MWL8K_TX_WMM_QUEUES; |
|
|
|
/* Set rssi values to dBm */ |
|
ieee80211_hw_set(hw, SIGNAL_DBM); |
|
ieee80211_hw_set(hw, HAS_RATE_CONTROL); |
|
|
|
/* |
|
* Ask mac80211 to not to trigger PS mode |
|
* based on PM bit of incoming frames. |
|
*/ |
|
if (priv->ap_fw) |
|
ieee80211_hw_set(hw, AP_LINK_PS); |
|
|
|
hw->vif_data_size = sizeof(struct mwl8k_vif); |
|
hw->sta_data_size = sizeof(struct mwl8k_sta); |
|
|
|
priv->macids_used = 0; |
|
INIT_LIST_HEAD(&priv->vif_list); |
|
|
|
/* Set default radio state and preamble */ |
|
priv->radio_on = false; |
|
priv->radio_short_preamble = false; |
|
|
|
/* Finalize join worker */ |
|
INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker); |
|
/* Handle watchdog ba events */ |
|
INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events); |
|
/* To reload the firmware if it crashes */ |
|
INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work); |
|
|
|
/* TX reclaim and RX tasklets. */ |
|
tasklet_setup(&priv->poll_tx_task, mwl8k_tx_poll); |
|
tasklet_disable(&priv->poll_tx_task); |
|
tasklet_setup(&priv->poll_rx_task, mwl8k_rx_poll); |
|
tasklet_disable(&priv->poll_rx_task); |
|
|
|
/* Power management cookie */ |
|
priv->cookie = dma_alloc_coherent(&priv->pdev->dev, 4, |
|
&priv->cookie_dma, GFP_KERNEL); |
|
if (priv->cookie == NULL) |
|
return -ENOMEM; |
|
|
|
mutex_init(&priv->fw_mutex); |
|
priv->fw_mutex_owner = NULL; |
|
priv->fw_mutex_depth = 0; |
|
priv->hostcmd_wait = NULL; |
|
|
|
spin_lock_init(&priv->tx_lock); |
|
|
|
spin_lock_init(&priv->stream_lock); |
|
|
|
priv->tx_wait = NULL; |
|
|
|
rc = mwl8k_probe_hw(hw); |
|
if (rc) |
|
goto err_free_cookie; |
|
|
|
hw->wiphy->interface_modes = 0; |
|
|
|
if (priv->ap_macids_supported || priv->device_info->fw_image_ap) { |
|
hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP); |
|
hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION); |
|
hw->wiphy->iface_combinations = &ap_if_comb; |
|
hw->wiphy->n_iface_combinations = 1; |
|
} |
|
|
|
if (priv->sta_macids_supported || priv->device_info->fw_image_sta) |
|
hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION); |
|
|
|
wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); |
|
|
|
rc = ieee80211_register_hw(hw); |
|
if (rc) { |
|
wiphy_err(hw->wiphy, "Cannot register device\n"); |
|
goto err_unprobe_hw; |
|
} |
|
|
|
return 0; |
|
|
|
err_unprobe_hw: |
|
for (i = 0; i < mwl8k_tx_queues(priv); i++) |
|
mwl8k_txq_deinit(hw, i); |
|
mwl8k_rxq_deinit(hw, 0); |
|
|
|
err_free_cookie: |
|
if (priv->cookie != NULL) |
|
dma_free_coherent(&priv->pdev->dev, 4, priv->cookie, |
|
priv->cookie_dma); |
|
|
|
return rc; |
|
} |
|
static int mwl8k_probe(struct pci_dev *pdev, |
|
const struct pci_device_id *id) |
|
{ |
|
static int printed_version; |
|
struct ieee80211_hw *hw; |
|
struct mwl8k_priv *priv; |
|
struct mwl8k_device_info *di; |
|
int rc; |
|
|
|
if (!printed_version) { |
|
printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION); |
|
printed_version = 1; |
|
} |
|
|
|
|
|
rc = pci_enable_device(pdev); |
|
if (rc) { |
|
printk(KERN_ERR "%s: Cannot enable new PCI device\n", |
|
MWL8K_NAME); |
|
return rc; |
|
} |
|
|
|
rc = pci_request_regions(pdev, MWL8K_NAME); |
|
if (rc) { |
|
printk(KERN_ERR "%s: Cannot obtain PCI resources\n", |
|
MWL8K_NAME); |
|
goto err_disable_device; |
|
} |
|
|
|
pci_set_master(pdev); |
|
|
|
|
|
hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops); |
|
if (hw == NULL) { |
|
printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME); |
|
rc = -ENOMEM; |
|
goto err_free_reg; |
|
} |
|
|
|
SET_IEEE80211_DEV(hw, &pdev->dev); |
|
pci_set_drvdata(pdev, hw); |
|
|
|
priv = hw->priv; |
|
priv->hw = hw; |
|
priv->pdev = pdev; |
|
priv->device_info = &mwl8k_info_tbl[id->driver_data]; |
|
|
|
if (id->driver_data == MWL8764) |
|
priv->is_8764 = true; |
|
|
|
priv->sram = pci_iomap(pdev, 0, 0x10000); |
|
if (priv->sram == NULL) { |
|
wiphy_err(hw->wiphy, "Cannot map device SRAM\n"); |
|
rc = -EIO; |
|
goto err_iounmap; |
|
} |
|
|
|
/* |
|
* If BAR0 is a 32 bit BAR, the register BAR will be BAR1. |
|
* If BAR0 is a 64 bit BAR, the register BAR will be BAR2. |
|
*/ |
|
priv->regs = pci_iomap(pdev, 1, 0x10000); |
|
if (priv->regs == NULL) { |
|
priv->regs = pci_iomap(pdev, 2, 0x10000); |
|
if (priv->regs == NULL) { |
|
wiphy_err(hw->wiphy, "Cannot map device registers\n"); |
|
rc = -EIO; |
|
goto err_iounmap; |
|
} |
|
} |
|
|
|
/* |
|
* Choose the initial fw image depending on user input. If a second |
|
* image is available, make it the alternative image that will be |
|
* loaded if the first one fails. |
|
*/ |
|
init_completion(&priv->firmware_loading_complete); |
|
di = priv->device_info; |
|
if (ap_mode_default && di->fw_image_ap) { |
|
priv->fw_pref = di->fw_image_ap; |
|
priv->fw_alt = di->fw_image_sta; |
|
} else if (!ap_mode_default && di->fw_image_sta) { |
|
priv->fw_pref = di->fw_image_sta; |
|
priv->fw_alt = di->fw_image_ap; |
|
} else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) { |
|
printk(KERN_WARNING "AP fw is unavailable. Using STA fw."); |
|
priv->fw_pref = di->fw_image_sta; |
|
} else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) { |
|
printk(KERN_WARNING "STA fw is unavailable. Using AP fw."); |
|
priv->fw_pref = di->fw_image_ap; |
|
} |
|
rc = mwl8k_init_firmware(hw, priv->fw_pref, true); |
|
if (rc) |
|
goto err_stop_firmware; |
|
|
|
priv->hw_restart_in_progress = false; |
|
|
|
priv->running_bsses = 0; |
|
|
|
return rc; |
|
|
|
err_stop_firmware: |
|
mwl8k_hw_reset(priv); |
|
|
|
err_iounmap: |
|
if (priv->regs != NULL) |
|
pci_iounmap(pdev, priv->regs); |
|
|
|
if (priv->sram != NULL) |
|
pci_iounmap(pdev, priv->sram); |
|
|
|
ieee80211_free_hw(hw); |
|
|
|
err_free_reg: |
|
pci_release_regions(pdev); |
|
|
|
err_disable_device: |
|
pci_disable_device(pdev); |
|
|
|
return rc; |
|
} |
|
|
|
static void mwl8k_remove(struct pci_dev *pdev) |
|
{ |
|
struct ieee80211_hw *hw = pci_get_drvdata(pdev); |
|
struct mwl8k_priv *priv; |
|
int i; |
|
|
|
if (hw == NULL) |
|
return; |
|
priv = hw->priv; |
|
|
|
wait_for_completion(&priv->firmware_loading_complete); |
|
|
|
if (priv->fw_state == FW_STATE_ERROR) { |
|
mwl8k_hw_reset(priv); |
|
goto unmap; |
|
} |
|
|
|
ieee80211_stop_queues(hw); |
|
|
|
ieee80211_unregister_hw(hw); |
|
|
|
/* Remove TX reclaim and RX tasklets. */ |
|
tasklet_kill(&priv->poll_tx_task); |
|
tasklet_kill(&priv->poll_rx_task); |
|
|
|
/* Stop hardware */ |
|
mwl8k_hw_reset(priv); |
|
|
|
/* Return all skbs to mac80211 */ |
|
for (i = 0; i < mwl8k_tx_queues(priv); i++) |
|
mwl8k_txq_reclaim(hw, i, INT_MAX, 1); |
|
|
|
for (i = 0; i < mwl8k_tx_queues(priv); i++) |
|
mwl8k_txq_deinit(hw, i); |
|
|
|
mwl8k_rxq_deinit(hw, 0); |
|
|
|
dma_free_coherent(&priv->pdev->dev, 4, priv->cookie, priv->cookie_dma); |
|
|
|
unmap: |
|
pci_iounmap(pdev, priv->regs); |
|
pci_iounmap(pdev, priv->sram); |
|
ieee80211_free_hw(hw); |
|
pci_release_regions(pdev); |
|
pci_disable_device(pdev); |
|
} |
|
|
|
static struct pci_driver mwl8k_driver = { |
|
.name = MWL8K_NAME, |
|
.id_table = mwl8k_pci_id_table, |
|
.probe = mwl8k_probe, |
|
.remove = mwl8k_remove, |
|
}; |
|
|
|
module_pci_driver(mwl8k_driver); |
|
|
|
MODULE_DESCRIPTION(MWL8K_DESC); |
|
MODULE_VERSION(MWL8K_VERSION); |
|
MODULE_AUTHOR("Lennert Buytenhek <[email protected]>"); |
|
MODULE_LICENSE("GPL");
|
|
|