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166 lines
4.4 KiB
166 lines
4.4 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef B43_PIO_H_ |
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#define B43_PIO_H_ |
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#include "b43.h" |
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#include <linux/interrupt.h> |
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#include <linux/io.h> |
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#include <linux/list.h> |
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#include <linux/skbuff.h> |
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/*** Registers for PIO queues up to revision 7. ***/ |
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/* TX queue. */ |
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#define B43_PIO_TXCTL 0x00 |
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#define B43_PIO_TXCTL_WRITELO 0x0001 |
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#define B43_PIO_TXCTL_WRITEHI 0x0002 |
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#define B43_PIO_TXCTL_EOF 0x0004 |
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#define B43_PIO_TXCTL_FREADY 0x0008 |
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#define B43_PIO_TXCTL_FLUSHREQ 0x0020 |
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#define B43_PIO_TXCTL_FLUSHPEND 0x0040 |
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#define B43_PIO_TXCTL_SUSPREQ 0x0080 |
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#define B43_PIO_TXCTL_QSUSP 0x0100 |
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#define B43_PIO_TXCTL_COMMCNT 0xFC00 |
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#define B43_PIO_TXCTL_COMMCNT_SHIFT 10 |
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#define B43_PIO_TXDATA 0x02 |
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#define B43_PIO_TXQBUFSIZE 0x04 |
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/* RX queue. */ |
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#define B43_PIO_RXCTL 0x00 |
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#define B43_PIO_RXCTL_FRAMERDY 0x0001 |
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#define B43_PIO_RXCTL_DATARDY 0x0002 |
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#define B43_PIO_RXDATA 0x02 |
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/*** Registers for PIO queues revision 8 and later. ***/ |
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/* TX queue */ |
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#define B43_PIO8_TXCTL 0x00 |
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#define B43_PIO8_TXCTL_0_7 0x00000001 |
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#define B43_PIO8_TXCTL_8_15 0x00000002 |
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#define B43_PIO8_TXCTL_16_23 0x00000004 |
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#define B43_PIO8_TXCTL_24_31 0x00000008 |
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#define B43_PIO8_TXCTL_EOF 0x00000010 |
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#define B43_PIO8_TXCTL_FREADY 0x00000080 |
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#define B43_PIO8_TXCTL_SUSPREQ 0x00000100 |
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#define B43_PIO8_TXCTL_QSUSP 0x00000200 |
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#define B43_PIO8_TXCTL_FLUSHREQ 0x00000400 |
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#define B43_PIO8_TXCTL_FLUSHPEND 0x00000800 |
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#define B43_PIO8_TXDATA 0x04 |
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/* RX queue */ |
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#define B43_PIO8_RXCTL 0x00 |
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#define B43_PIO8_RXCTL_FRAMERDY 0x00000001 |
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#define B43_PIO8_RXCTL_DATARDY 0x00000002 |
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#define B43_PIO8_RXDATA 0x04 |
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/* The maximum number of TX-packets the HW can handle. */ |
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#define B43_PIO_MAX_NR_TXPACKETS 32 |
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struct b43_pio_txpacket { |
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/* Pointer to the TX queue we belong to. */ |
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struct b43_pio_txqueue *queue; |
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/* The TX data packet. */ |
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struct sk_buff *skb; |
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/* Index in the (struct b43_pio_txqueue)->packets array. */ |
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u8 index; |
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struct list_head list; |
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}; |
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struct b43_pio_txqueue { |
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struct b43_wldev *dev; |
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u16 mmio_base; |
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/* The device queue buffer size in bytes. */ |
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u16 buffer_size; |
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/* The number of used bytes in the device queue buffer. */ |
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u16 buffer_used; |
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/* The number of packets that can still get queued. |
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* This is decremented on queueing a packet and incremented |
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* after receiving the transmit status. */ |
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u16 free_packet_slots; |
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/* True, if the mac80211 queue was stopped due to overflow at TX. */ |
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bool stopped; |
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/* Our b43 queue index number */ |
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u8 index; |
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/* The mac80211 QoS queue priority. */ |
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u8 queue_prio; |
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/* Buffer for TX packet meta data. */ |
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struct b43_pio_txpacket packets[B43_PIO_MAX_NR_TXPACKETS]; |
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struct list_head packets_list; |
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/* Shortcut to the 802.11 core revision. This is to |
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* avoid horrible pointer dereferencing in the fastpaths. */ |
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u8 rev; |
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}; |
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struct b43_pio_rxqueue { |
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struct b43_wldev *dev; |
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u16 mmio_base; |
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/* Shortcut to the 802.11 core revision. This is to |
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* avoid horrible pointer dereferencing in the fastpaths. */ |
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u8 rev; |
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}; |
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static inline u16 b43_piotx_read16(struct b43_pio_txqueue *q, u16 offset) |
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{ |
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return b43_read16(q->dev, q->mmio_base + offset); |
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} |
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static inline u32 b43_piotx_read32(struct b43_pio_txqueue *q, u16 offset) |
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{ |
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return b43_read32(q->dev, q->mmio_base + offset); |
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} |
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static inline void b43_piotx_write16(struct b43_pio_txqueue *q, |
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u16 offset, u16 value) |
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{ |
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b43_write16(q->dev, q->mmio_base + offset, value); |
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} |
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static inline void b43_piotx_write32(struct b43_pio_txqueue *q, |
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u16 offset, u32 value) |
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{ |
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b43_write32(q->dev, q->mmio_base + offset, value); |
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} |
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static inline u16 b43_piorx_read16(struct b43_pio_rxqueue *q, u16 offset) |
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{ |
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return b43_read16(q->dev, q->mmio_base + offset); |
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} |
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static inline u32 b43_piorx_read32(struct b43_pio_rxqueue *q, u16 offset) |
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{ |
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return b43_read32(q->dev, q->mmio_base + offset); |
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} |
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static inline void b43_piorx_write16(struct b43_pio_rxqueue *q, |
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u16 offset, u16 value) |
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{ |
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b43_write16(q->dev, q->mmio_base + offset, value); |
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} |
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static inline void b43_piorx_write32(struct b43_pio_rxqueue *q, |
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u16 offset, u32 value) |
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{ |
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b43_write32(q->dev, q->mmio_base + offset, value); |
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} |
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int b43_pio_init(struct b43_wldev *dev); |
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void b43_pio_free(struct b43_wldev *dev); |
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int b43_pio_tx(struct b43_wldev *dev, struct sk_buff *skb); |
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void b43_pio_handle_txstatus(struct b43_wldev *dev, |
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const struct b43_txstatus *status); |
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void b43_pio_rx(struct b43_pio_rxqueue *q); |
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void b43_pio_tx_suspend(struct b43_wldev *dev); |
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void b43_pio_tx_resume(struct b43_wldev *dev); |
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#endif /* B43_PIO_H_ */
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