413 lines
8.8 KiB
C
413 lines
8.8 KiB
C
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#include "wl1251_cmd.h"
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#include <linux/module.h>
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#include <linux/crc7.h>
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#include "wl1251.h"
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#include "wl1251_reg.h"
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#include "wl1251_io.h"
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#include "wl1251_ps.h"
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#include "wl1251_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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* @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: lenght 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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ret = -ENOMEM;
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goto out;
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}
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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 0;
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}
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int wl1251_cmd_data_path(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, 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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ret = -ENOMEM;
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goto out;
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}
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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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cmd_tx = CMD_ENABLE_TX;
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} else {
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cmd_rx = CMD_DISABLE_RX;
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cmd_tx = CMD_DISABLE_TX;
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}
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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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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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return ret;
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}
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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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out:
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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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ret = -ENOMEM;
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goto out;
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}
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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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/*
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* FIXME: disable temporarily all filters because after commit
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* 9cef8737 "mac80211: fix managed mode BSSID handling" broke
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* association. The filter logic needs to be implemented properly
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* and once that is done, this hack can be removed.
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*/
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join->rx_config_options = 0;
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join->rx_filter_options = WL1251_DEFAULT_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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ret = -ENOMEM;
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goto out;
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}
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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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ret = -ENOMEM;
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goto out;
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}
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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);
|
||
|
|
|
||
|
|
WARN_ON(buf_len > WL1251_MAX_TEMPLATE_SIZE);
|
||
|
|
buf_len = min_t(size_t, buf_len, WL1251_MAX_TEMPLATE_SIZE);
|
||
|
|
cmd_len = ALIGN(sizeof(*cmd) + buf_len, 4);
|
||
|
|
|
||
|
|
cmd = kzalloc(cmd_len, GFP_KERNEL);
|
||
|
|
if (!cmd) {
|
||
|
|
ret = -ENOMEM;
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
|
||
|
|
cmd->size = cpu_to_le16(buf_len);
|
||
|
|
|
||
|
|
if (buf)
|
||
|
|
memcpy(cmd->data, buf, buf_len);
|
||
|
|
|
||
|
|
ret = wl1251_cmd_send(wl, cmd_id, cmd, cmd_len);
|
||
|
|
if (ret < 0) {
|
||
|
|
wl1251_warning("cmd set_template failed: %d", ret);
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
|
||
|
|
out:
|
||
|
|
kfree(cmd);
|
||
|
|
return ret;
|
||
|
|
}
|