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503 lines
11 KiB
503 lines
11 KiB
// SPDX-License-Identifier: GPL-2.0 |
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#include "cmd.h" |
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#include <linux/module.h> |
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#include <linux/slab.h> |
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#include <linux/etherdevice.h> |
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#include "wl1251.h" |
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#include "reg.h" |
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#include "io.h" |
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#include "ps.h" |
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#include "acx.h" |
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/** |
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* send command to firmware |
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* |
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* @wl: wl struct |
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* @id: command id |
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* @buf: buffer containing the command, must work with dma |
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* @len: length of the buffer |
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*/ |
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int wl1251_cmd_send(struct wl1251 *wl, u16 id, void *buf, size_t len) |
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{ |
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struct wl1251_cmd_header *cmd; |
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unsigned long timeout; |
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u32 intr; |
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int ret = 0; |
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cmd = buf; |
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cmd->id = id; |
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cmd->status = 0; |
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WARN_ON(len % 4 != 0); |
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wl1251_mem_write(wl, wl->cmd_box_addr, buf, len); |
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wl1251_reg_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_CMD); |
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timeout = jiffies + msecs_to_jiffies(WL1251_COMMAND_TIMEOUT); |
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intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR); |
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while (!(intr & WL1251_ACX_INTR_CMD_COMPLETE)) { |
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if (time_after(jiffies, timeout)) { |
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wl1251_error("command complete timeout"); |
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ret = -ETIMEDOUT; |
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goto out; |
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} |
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msleep(1); |
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intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR); |
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} |
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wl1251_reg_write32(wl, ACX_REG_INTERRUPT_ACK, |
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WL1251_ACX_INTR_CMD_COMPLETE); |
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out: |
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return ret; |
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} |
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/** |
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* send test command to firmware |
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* |
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* @wl: wl struct |
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* @buf: buffer containing the command, with all headers, must work with dma |
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* @buf_len: length of the buffer |
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* @answer: is answer needed |
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*/ |
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int wl1251_cmd_test(struct wl1251 *wl, void *buf, size_t buf_len, u8 answer) |
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{ |
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int ret; |
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wl1251_debug(DEBUG_CMD, "cmd test"); |
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ret = wl1251_cmd_send(wl, CMD_TEST, buf, buf_len); |
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if (ret < 0) { |
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wl1251_warning("TEST command failed"); |
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return ret; |
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} |
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if (answer) { |
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struct wl1251_command *cmd_answer; |
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/* |
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* The test command got in, we can read the answer. |
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* The answer would be a wl1251_command, where the |
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* parameter array contains the actual answer. |
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*/ |
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wl1251_mem_read(wl, wl->cmd_box_addr, buf, buf_len); |
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cmd_answer = buf; |
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if (cmd_answer->header.status != CMD_STATUS_SUCCESS) |
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wl1251_error("TEST command answer error: %d", |
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cmd_answer->header.status); |
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} |
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return 0; |
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} |
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/** |
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* read acx from firmware |
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* |
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* @wl: wl struct |
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* @id: acx id |
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* @buf: buffer for the response, including all headers, must work with dma |
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* @len: length of buf |
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*/ |
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int wl1251_cmd_interrogate(struct wl1251 *wl, u16 id, void *buf, size_t len) |
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{ |
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struct acx_header *acx = buf; |
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int ret; |
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wl1251_debug(DEBUG_CMD, "cmd interrogate"); |
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acx->id = id; |
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/* payload length, does not include any headers */ |
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acx->len = len - sizeof(*acx); |
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ret = wl1251_cmd_send(wl, CMD_INTERROGATE, acx, sizeof(*acx)); |
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if (ret < 0) { |
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wl1251_error("INTERROGATE command failed"); |
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goto out; |
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} |
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/* the interrogate command got in, we can read the answer */ |
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wl1251_mem_read(wl, wl->cmd_box_addr, buf, len); |
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acx = buf; |
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if (acx->cmd.status != CMD_STATUS_SUCCESS) |
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wl1251_error("INTERROGATE command error: %d", |
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acx->cmd.status); |
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out: |
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return ret; |
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} |
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/** |
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* write acx value to firmware |
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* |
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* @wl: wl struct |
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* @id: acx id |
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* @buf: buffer containing acx, including all headers, must work with dma |
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* @len: length of buf |
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*/ |
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int wl1251_cmd_configure(struct wl1251 *wl, u16 id, void *buf, size_t len) |
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{ |
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struct acx_header *acx = buf; |
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int ret; |
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wl1251_debug(DEBUG_CMD, "cmd configure"); |
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acx->id = id; |
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/* payload length, does not include any headers */ |
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acx->len = len - sizeof(*acx); |
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ret = wl1251_cmd_send(wl, CMD_CONFIGURE, acx, len); |
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if (ret < 0) { |
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wl1251_warning("CONFIGURE command NOK"); |
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return ret; |
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} |
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return 0; |
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} |
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int wl1251_cmd_vbm(struct wl1251 *wl, u8 identity, |
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void *bitmap, u16 bitmap_len, u8 bitmap_control) |
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{ |
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struct wl1251_cmd_vbm_update *vbm; |
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int ret; |
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wl1251_debug(DEBUG_CMD, "cmd vbm"); |
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vbm = kzalloc(sizeof(*vbm), GFP_KERNEL); |
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if (!vbm) |
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return -ENOMEM; |
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/* Count and period will be filled by the target */ |
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vbm->tim.bitmap_ctrl = bitmap_control; |
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if (bitmap_len > PARTIAL_VBM_MAX) { |
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wl1251_warning("cmd vbm len is %d B, truncating to %d", |
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bitmap_len, PARTIAL_VBM_MAX); |
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bitmap_len = PARTIAL_VBM_MAX; |
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} |
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memcpy(vbm->tim.pvb_field, bitmap, bitmap_len); |
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vbm->tim.identity = identity; |
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vbm->tim.length = bitmap_len + 3; |
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vbm->len = cpu_to_le16(bitmap_len + 5); |
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ret = wl1251_cmd_send(wl, CMD_VBM, vbm, sizeof(*vbm)); |
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if (ret < 0) { |
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wl1251_error("VBM command failed"); |
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goto out; |
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} |
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out: |
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kfree(vbm); |
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return ret; |
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} |
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int wl1251_cmd_data_path_rx(struct wl1251 *wl, u8 channel, bool enable) |
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{ |
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struct cmd_enabledisable_path *cmd; |
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int ret; |
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u16 cmd_rx; |
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wl1251_debug(DEBUG_CMD, "cmd data path"); |
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cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
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if (!cmd) |
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return -ENOMEM; |
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cmd->channel = channel; |
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if (enable) |
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cmd_rx = CMD_ENABLE_RX; |
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else |
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cmd_rx = CMD_DISABLE_RX; |
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ret = wl1251_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd)); |
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if (ret < 0) { |
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wl1251_error("rx %s cmd for channel %d failed", |
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enable ? "start" : "stop", channel); |
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goto out; |
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} |
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wl1251_debug(DEBUG_BOOT, "rx %s cmd channel %d", |
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enable ? "start" : "stop", channel); |
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out: |
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kfree(cmd); |
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return ret; |
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} |
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int wl1251_cmd_data_path_tx(struct wl1251 *wl, u8 channel, bool enable) |
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{ |
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struct cmd_enabledisable_path *cmd; |
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int ret; |
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u16 cmd_tx; |
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wl1251_debug(DEBUG_CMD, "cmd data path"); |
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cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
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if (!cmd) |
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return -ENOMEM; |
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cmd->channel = channel; |
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if (enable) |
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cmd_tx = CMD_ENABLE_TX; |
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else |
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cmd_tx = CMD_DISABLE_TX; |
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ret = wl1251_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd)); |
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if (ret < 0) |
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wl1251_error("tx %s cmd for channel %d failed", |
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enable ? "start" : "stop", channel); |
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else |
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wl1251_debug(DEBUG_BOOT, "tx %s cmd channel %d", |
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enable ? "start" : "stop", channel); |
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kfree(cmd); |
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return ret; |
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} |
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int wl1251_cmd_join(struct wl1251 *wl, u8 bss_type, u8 channel, |
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u16 beacon_interval, u8 dtim_interval) |
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{ |
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struct cmd_join *join; |
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int ret, i; |
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u8 *bssid; |
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join = kzalloc(sizeof(*join), GFP_KERNEL); |
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if (!join) |
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return -ENOMEM; |
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wl1251_debug(DEBUG_CMD, "cmd join%s ch %d %d/%d", |
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bss_type == BSS_TYPE_IBSS ? " ibss" : "", |
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channel, beacon_interval, dtim_interval); |
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/* Reverse order BSSID */ |
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bssid = (u8 *) &join->bssid_lsb; |
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for (i = 0; i < ETH_ALEN; i++) |
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bssid[i] = wl->bssid[ETH_ALEN - i - 1]; |
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join->rx_config_options = wl->rx_config; |
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join->rx_filter_options = wl->rx_filter; |
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join->basic_rate_set = RATE_MASK_1MBPS | RATE_MASK_2MBPS | |
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RATE_MASK_5_5MBPS | RATE_MASK_11MBPS; |
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join->beacon_interval = beacon_interval; |
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join->dtim_interval = dtim_interval; |
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join->bss_type = bss_type; |
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join->channel = channel; |
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join->ctrl = JOIN_CMD_CTRL_TX_FLUSH; |
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ret = wl1251_cmd_send(wl, CMD_START_JOIN, join, sizeof(*join)); |
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if (ret < 0) { |
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wl1251_error("failed to initiate cmd join"); |
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goto out; |
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} |
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out: |
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kfree(join); |
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return ret; |
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} |
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int wl1251_cmd_ps_mode(struct wl1251 *wl, u8 ps_mode) |
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{ |
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struct wl1251_cmd_ps_params *ps_params = NULL; |
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int ret = 0; |
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wl1251_debug(DEBUG_CMD, "cmd set ps mode"); |
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ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL); |
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if (!ps_params) |
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return -ENOMEM; |
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ps_params->ps_mode = ps_mode; |
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ps_params->send_null_data = 1; |
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ps_params->retries = 5; |
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ps_params->hang_over_period = 128; |
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ps_params->null_data_rate = 1; /* 1 Mbps */ |
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ret = wl1251_cmd_send(wl, CMD_SET_PS_MODE, ps_params, |
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sizeof(*ps_params)); |
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if (ret < 0) { |
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wl1251_error("cmd set_ps_mode failed"); |
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goto out; |
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} |
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out: |
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kfree(ps_params); |
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return ret; |
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} |
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int wl1251_cmd_read_memory(struct wl1251 *wl, u32 addr, void *answer, |
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size_t len) |
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{ |
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struct cmd_read_write_memory *cmd; |
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int ret = 0; |
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wl1251_debug(DEBUG_CMD, "cmd read memory"); |
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cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
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if (!cmd) |
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return -ENOMEM; |
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WARN_ON(len > MAX_READ_SIZE); |
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len = min_t(size_t, len, MAX_READ_SIZE); |
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cmd->addr = addr; |
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cmd->size = len; |
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ret = wl1251_cmd_send(wl, CMD_READ_MEMORY, cmd, sizeof(*cmd)); |
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if (ret < 0) { |
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wl1251_error("read memory command failed: %d", ret); |
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goto out; |
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} |
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/* the read command got in, we can now read the answer */ |
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wl1251_mem_read(wl, wl->cmd_box_addr, cmd, sizeof(*cmd)); |
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if (cmd->header.status != CMD_STATUS_SUCCESS) |
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wl1251_error("error in read command result: %d", |
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cmd->header.status); |
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memcpy(answer, cmd->value, len); |
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out: |
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kfree(cmd); |
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return ret; |
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} |
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int wl1251_cmd_template_set(struct wl1251 *wl, u16 cmd_id, |
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void *buf, size_t buf_len) |
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{ |
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struct wl1251_cmd_packet_template *cmd; |
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size_t cmd_len; |
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int ret = 0; |
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wl1251_debug(DEBUG_CMD, "cmd template %d", cmd_id); |
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WARN_ON(buf_len > WL1251_MAX_TEMPLATE_SIZE); |
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buf_len = min_t(size_t, buf_len, WL1251_MAX_TEMPLATE_SIZE); |
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cmd_len = ALIGN(sizeof(*cmd) + buf_len, 4); |
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cmd = kzalloc(cmd_len, GFP_KERNEL); |
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if (!cmd) |
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return -ENOMEM; |
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cmd->size = cpu_to_le16(buf_len); |
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if (buf) |
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memcpy(cmd->data, buf, buf_len); |
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ret = wl1251_cmd_send(wl, cmd_id, cmd, cmd_len); |
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if (ret < 0) { |
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wl1251_warning("cmd set_template failed: %d", ret); |
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goto out; |
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} |
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out: |
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kfree(cmd); |
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return ret; |
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} |
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int wl1251_cmd_scan(struct wl1251 *wl, u8 *ssid, size_t ssid_len, |
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struct ieee80211_channel *channels[], |
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unsigned int n_channels, unsigned int n_probes) |
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{ |
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struct wl1251_cmd_scan *cmd; |
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int i, ret = 0; |
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wl1251_debug(DEBUG_CMD, "cmd scan channels %d", n_channels); |
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WARN_ON(n_channels > SCAN_MAX_NUM_OF_CHANNELS); |
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cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
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if (!cmd) |
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return -ENOMEM; |
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cmd->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD); |
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cmd->params.rx_filter_options = cpu_to_le32(CFG_RX_PRSP_EN | |
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CFG_RX_MGMT_EN | |
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CFG_RX_BCN_EN); |
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cmd->params.scan_options = 0; |
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/* |
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* Use high priority scan when not associated to prevent fw issue |
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* causing never-ending scans (sometimes 20+ minutes). |
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* Note: This bug may be caused by the fw's DTIM handling. |
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*/ |
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if (is_zero_ether_addr(wl->bssid)) |
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cmd->params.scan_options |= cpu_to_le16(WL1251_SCAN_OPT_PRIORITY_HIGH); |
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cmd->params.num_channels = n_channels; |
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cmd->params.num_probe_requests = n_probes; |
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cmd->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */ |
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cmd->params.tid_trigger = 0; |
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for (i = 0; i < n_channels; i++) { |
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cmd->channels[i].min_duration = |
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cpu_to_le32(WL1251_SCAN_MIN_DURATION); |
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cmd->channels[i].max_duration = |
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cpu_to_le32(WL1251_SCAN_MAX_DURATION); |
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memset(&cmd->channels[i].bssid_lsb, 0xff, 4); |
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memset(&cmd->channels[i].bssid_msb, 0xff, 2); |
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cmd->channels[i].early_termination = 0; |
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cmd->channels[i].tx_power_att = 0; |
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cmd->channels[i].channel = channels[i]->hw_value; |
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} |
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cmd->params.ssid_len = ssid_len; |
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if (ssid) |
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memcpy(cmd->params.ssid, ssid, ssid_len); |
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ret = wl1251_cmd_send(wl, CMD_SCAN, cmd, sizeof(*cmd)); |
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if (ret < 0) { |
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wl1251_error("cmd scan failed: %d", ret); |
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goto out; |
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} |
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wl1251_mem_read(wl, wl->cmd_box_addr, cmd, sizeof(*cmd)); |
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if (cmd->header.status != CMD_STATUS_SUCCESS) { |
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wl1251_error("cmd scan status wasn't success: %d", |
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cmd->header.status); |
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ret = -EIO; |
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goto out; |
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} |
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out: |
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kfree(cmd); |
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return ret; |
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} |
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int wl1251_cmd_trigger_scan_to(struct wl1251 *wl, u32 timeout) |
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{ |
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struct wl1251_cmd_trigger_scan_to *cmd; |
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int ret; |
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wl1251_debug(DEBUG_CMD, "cmd trigger scan to"); |
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cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
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if (!cmd) |
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return -ENOMEM; |
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cmd->timeout = timeout; |
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ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, cmd, sizeof(*cmd)); |
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if (ret < 0) { |
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wl1251_error("cmd trigger scan to failed: %d", ret); |
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goto out; |
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} |
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out: |
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kfree(cmd); |
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return ret; |
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}
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