#include "cmd.h" #include <linux/module.h> #include <linux/slab.h> #include <linux/crc7.h> #include <linux/etherdevice.h> #include "wl1251.h" #include "reg.h" #include "io.h" #include "ps.h" #include "acx.h" /** * send command to firmware * * @wl: wl struct * @id: command id * @buf: buffer containing the command, must work with dma * @len: length of the buffer */ int wl1251_cmd_send(struct wl1251 *wl, u16 id, void *buf, size_t len) { struct wl1251_cmd_header *cmd; unsigned long timeout; u32 intr; int ret = 0; cmd = buf; cmd->id = id; cmd->status = 0; WARN_ON(len % 4 != 0); wl1251_mem_write(wl, wl->cmd_box_addr, buf, len); wl1251_reg_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_CMD); timeout = jiffies + msecs_to_jiffies(WL1251_COMMAND_TIMEOUT); intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR); while (!(intr & WL1251_ACX_INTR_CMD_COMPLETE)) { if (time_after(jiffies, timeout)) { wl1251_error("command complete timeout"); ret = -ETIMEDOUT; goto out; } msleep(1); intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR); } wl1251_reg_write32(wl, ACX_REG_INTERRUPT_ACK, WL1251_ACX_INTR_CMD_COMPLETE); out: return ret; } /** * send test command to firmware * * @wl: wl struct * @buf: buffer containing the command, with all headers, must work with dma * @len: length of the buffer * @answer: is answer needed */ int wl1251_cmd_test(struct wl1251 *wl, void *buf, size_t buf_len, u8 answer) { int ret; wl1251_debug(DEBUG_CMD, "cmd test"); ret = wl1251_cmd_send(wl, CMD_TEST, buf, buf_len); if (ret < 0) { wl1251_warning("TEST command failed"); return ret; } if (answer) { struct wl1251_command *cmd_answer; /* * The test command got in, we can read the answer. * The answer would be a wl1251_command, where the * parameter array contains the actual answer. */ wl1251_mem_read(wl, wl->cmd_box_addr, buf, buf_len); cmd_answer = buf; if (cmd_answer->header.status != CMD_STATUS_SUCCESS) wl1251_error("TEST command answer error: %d", cmd_answer->header.status); } return 0; } /** * read acx from firmware * * @wl: wl struct * @id: acx id * @buf: buffer for the response, including all headers, must work with dma * @len: length of buf */ int wl1251_cmd_interrogate(struct wl1251 *wl, u16 id, void *buf, size_t len) { struct acx_header *acx = buf; int ret; wl1251_debug(DEBUG_CMD, "cmd interrogate"); acx->id = id; /* payload length, does not include any headers */ acx->len = len - sizeof(*acx); ret = wl1251_cmd_send(wl, CMD_INTERROGATE, acx, sizeof(*acx)); if (ret < 0) { wl1251_error("INTERROGATE command failed"); goto out; } /* the interrogate command got in, we can read the answer */ wl1251_mem_read(wl, wl->cmd_box_addr, buf, len); acx = buf; if (acx->cmd.status != CMD_STATUS_SUCCESS) wl1251_error("INTERROGATE command error: %d", acx->cmd.status); out: return ret; } /** * write acx value to firmware * * @wl: wl struct * @id: acx id * @buf: buffer containing acx, including all headers, must work with dma * @len: length of buf */ int wl1251_cmd_configure(struct wl1251 *wl, u16 id, void *buf, size_t len) { struct acx_header *acx = buf; int ret; wl1251_debug(DEBUG_CMD, "cmd configure"); acx->id = id; /* payload length, does not include any headers */ acx->len = len - sizeof(*acx); ret = wl1251_cmd_send(wl, CMD_CONFIGURE, acx, len); if (ret < 0) { wl1251_warning("CONFIGURE command NOK"); return ret; } return 0; } int wl1251_cmd_vbm(struct wl1251 *wl, u8 identity, void *bitmap, u16 bitmap_len, u8 bitmap_control) { struct wl1251_cmd_vbm_update *vbm; int ret; wl1251_debug(DEBUG_CMD, "cmd vbm"); vbm = kzalloc(sizeof(*vbm), GFP_KERNEL); if (!vbm) { ret = -ENOMEM; goto out; } /* Count and period will be filled by the target */ vbm->tim.bitmap_ctrl = bitmap_control; if (bitmap_len > PARTIAL_VBM_MAX) { wl1251_warning("cmd vbm len is %d B, truncating to %d", bitmap_len, PARTIAL_VBM_MAX); bitmap_len = PARTIAL_VBM_MAX; } memcpy(vbm->tim.pvb_field, bitmap, bitmap_len); vbm->tim.identity = identity; vbm->tim.length = bitmap_len + 3; vbm->len = cpu_to_le16(bitmap_len + 5); ret = wl1251_cmd_send(wl, CMD_VBM, vbm, sizeof(*vbm)); if (ret < 0) { wl1251_error("VBM command failed"); goto out; } out: kfree(vbm); return ret; } int wl1251_cmd_data_path_rx(struct wl1251 *wl, u8 channel, bool enable) { struct cmd_enabledisable_path *cmd; int ret; u16 cmd_rx; wl1251_debug(DEBUG_CMD, "cmd data path"); cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); if (!cmd) { ret = -ENOMEM; goto out; } cmd->channel = channel; if (enable) cmd_rx = CMD_ENABLE_RX; else cmd_rx = CMD_DISABLE_RX; ret = wl1251_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd)); if (ret < 0) { wl1251_error("rx %s cmd for channel %d failed", enable ? "start" : "stop", channel); goto out; } wl1251_debug(DEBUG_BOOT, "rx %s cmd channel %d", enable ? "start" : "stop", channel); out: kfree(cmd); return ret; } int wl1251_cmd_data_path_tx(struct wl1251 *wl, u8 channel, bool enable) { struct cmd_enabledisable_path *cmd; int ret; u16 cmd_tx; wl1251_debug(DEBUG_CMD, "cmd data path"); cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); if (!cmd) return -ENOMEM; cmd->channel = channel; if (enable) cmd_tx = CMD_ENABLE_TX; else cmd_tx = CMD_DISABLE_TX; ret = wl1251_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd)); if (ret < 0) wl1251_error("tx %s cmd for channel %d failed", enable ? "start" : "stop", channel); else wl1251_debug(DEBUG_BOOT, "tx %s cmd channel %d", enable ? "start" : "stop", channel); kfree(cmd); return ret; } int wl1251_cmd_join(struct wl1251 *wl, u8 bss_type, u8 channel, u16 beacon_interval, u8 dtim_interval) { struct cmd_join *join; int ret, i; u8 *bssid; join = kzalloc(sizeof(*join), GFP_KERNEL); if (!join) { ret = -ENOMEM; goto out; } wl1251_debug(DEBUG_CMD, "cmd join%s ch %d %d/%d", bss_type == BSS_TYPE_IBSS ? " ibss" : "", channel, beacon_interval, dtim_interval); /* Reverse order BSSID */ bssid = (u8 *) &join->bssid_lsb; for (i = 0; i < ETH_ALEN; i++) bssid[i] = wl->bssid[ETH_ALEN - i - 1]; join->rx_config_options = wl->rx_config; join->rx_filter_options = wl->rx_filter; join->basic_rate_set = RATE_MASK_1MBPS | RATE_MASK_2MBPS | RATE_MASK_5_5MBPS | RATE_MASK_11MBPS; join->beacon_interval = beacon_interval; join->dtim_interval = dtim_interval; join->bss_type = bss_type; join->channel = channel; join->ctrl = JOIN_CMD_CTRL_TX_FLUSH; ret = wl1251_cmd_send(wl, CMD_START_JOIN, join, sizeof(*join)); if (ret < 0) { wl1251_error("failed to initiate cmd join"); goto out; } out: kfree(join); return ret; } int wl1251_cmd_ps_mode(struct wl1251 *wl, u8 ps_mode) { struct wl1251_cmd_ps_params *ps_params = NULL; int ret = 0; wl1251_debug(DEBUG_CMD, "cmd set ps mode"); ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL); if (!ps_params) { ret = -ENOMEM; goto out; } ps_params->ps_mode = ps_mode; ps_params->send_null_data = 1; ps_params->retries = 5; ps_params->hang_over_period = 128; ps_params->null_data_rate = 1; /* 1 Mbps */ ret = wl1251_cmd_send(wl, CMD_SET_PS_MODE, ps_params, sizeof(*ps_params)); if (ret < 0) { wl1251_error("cmd set_ps_mode failed"); goto out; } out: kfree(ps_params); return ret; } int wl1251_cmd_read_memory(struct wl1251 *wl, u32 addr, void *answer, size_t len) { struct cmd_read_write_memory *cmd; int ret = 0; wl1251_debug(DEBUG_CMD, "cmd read memory"); cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); if (!cmd) { ret = -ENOMEM; goto out; } WARN_ON(len > MAX_READ_SIZE); len = min_t(size_t, len, MAX_READ_SIZE); cmd->addr = addr; cmd->size = len; ret = wl1251_cmd_send(wl, CMD_READ_MEMORY, cmd, sizeof(*cmd)); if (ret < 0) { wl1251_error("read memory command failed: %d", ret); goto out; } /* the read command got in, we can now read the answer */ wl1251_mem_read(wl, wl->cmd_box_addr, cmd, sizeof(*cmd)); if (cmd->header.status != CMD_STATUS_SUCCESS) wl1251_error("error in read command result: %d", cmd->header.status); memcpy(answer, cmd->value, len); out: kfree(cmd); return ret; } int wl1251_cmd_template_set(struct wl1251 *wl, u16 cmd_id, void *buf, size_t buf_len) { struct wl1251_cmd_packet_template *cmd; size_t cmd_len; int ret = 0; 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; } int wl1251_cmd_scan(struct wl1251 *wl, u8 *ssid, size_t ssid_len, struct ieee80211_channel *channels[], unsigned int n_channels, unsigned int n_probes) { struct wl1251_cmd_scan *cmd; int i, ret = 0; wl1251_debug(DEBUG_CMD, "cmd scan channels %d", n_channels); WARN_ON(n_channels > SCAN_MAX_NUM_OF_CHANNELS); cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); if (!cmd) return -ENOMEM; cmd->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD); cmd->params.rx_filter_options = cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN); cmd->params.scan_options = 0; /* * Use high priority scan when not associated to prevent fw issue * causing never-ending scans (sometimes 20+ minutes). * Note: This bug may be caused by the fw's DTIM handling. */ if (is_zero_ether_addr(wl->bssid)) cmd->params.scan_options |= WL1251_SCAN_OPT_PRIORITY_HIGH; cmd->params.num_channels = n_channels; cmd->params.num_probe_requests = n_probes; cmd->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */ cmd->params.tid_trigger = 0; for (i = 0; i < n_channels; i++) { cmd->channels[i].min_duration = cpu_to_le32(WL1251_SCAN_MIN_DURATION); cmd->channels[i].max_duration = cpu_to_le32(WL1251_SCAN_MAX_DURATION); memset(&cmd->channels[i].bssid_lsb, 0xff, 4); memset(&cmd->channels[i].bssid_msb, 0xff, 2); cmd->channels[i].early_termination = 0; cmd->channels[i].tx_power_att = 0; cmd->channels[i].channel = channels[i]->hw_value; } cmd->params.ssid_len = ssid_len; if (ssid) memcpy(cmd->params.ssid, ssid, ssid_len); ret = wl1251_cmd_send(wl, CMD_SCAN, cmd, sizeof(*cmd)); if (ret < 0) { wl1251_error("cmd scan failed: %d", ret); goto out; } wl1251_mem_read(wl, wl->cmd_box_addr, cmd, sizeof(*cmd)); if (cmd->header.status != CMD_STATUS_SUCCESS) { wl1251_error("cmd scan status wasn't success: %d", cmd->header.status); ret = -EIO; goto out; } out: kfree(cmd); return ret; } int wl1251_cmd_trigger_scan_to(struct wl1251 *wl, u32 timeout) { struct wl1251_cmd_trigger_scan_to *cmd; int ret; wl1251_debug(DEBUG_CMD, "cmd trigger scan to"); cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); if (!cmd) return -ENOMEM; cmd->timeout = timeout; ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, cmd, sizeof(*cmd)); if (ret < 0) { wl1251_error("cmd trigger scan to failed: %d", ret); goto out; } out: kfree(cmd); return ret; }