462 lines
11 KiB
C
462 lines
11 KiB
C
/*
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* Copyright (c) 2005-2011 Atheros Communications Inc.
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* Copyright (c) 2011-2014,2016-2017 Qualcomm Atheros, Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "bmi.h"
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#include "hif.h"
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#include "debug.h"
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#include "htc.h"
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#include "hw.h"
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void ath10k_bmi_start(struct ath10k *ar)
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{
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int ret;
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ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi start\n");
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ar->bmi.done_sent = false;
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/* Enable hardware clock to speed up firmware download */
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if (ar->hw_params.hw_ops->enable_pll_clk) {
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ret = ar->hw_params.hw_ops->enable_pll_clk(ar);
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ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi enable pll ret %d\n", ret);
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}
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}
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int ath10k_bmi_done(struct ath10k *ar)
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{
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struct bmi_cmd cmd;
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u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.done);
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int ret;
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ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi done\n");
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if (ar->bmi.done_sent) {
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ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi skipped\n");
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return 0;
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}
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ar->bmi.done_sent = true;
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cmd.id = __cpu_to_le32(BMI_DONE);
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ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, NULL, NULL);
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if (ret) {
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ath10k_warn(ar, "unable to write to the device: %d\n", ret);
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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 ath10k_bmi_get_target_info(struct ath10k *ar,
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struct bmi_target_info *target_info)
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{
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struct bmi_cmd cmd;
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union bmi_resp resp;
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u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.get_target_info);
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u32 resplen = sizeof(resp.get_target_info);
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int ret;
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ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi get target info\n");
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if (ar->bmi.done_sent) {
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ath10k_warn(ar, "BMI Get Target Info Command disallowed\n");
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return -EBUSY;
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}
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cmd.id = __cpu_to_le32(BMI_GET_TARGET_INFO);
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ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, &resp, &resplen);
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if (ret) {
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ath10k_warn(ar, "unable to get target info from device\n");
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return ret;
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}
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if (resplen < sizeof(resp.get_target_info)) {
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ath10k_warn(ar, "invalid get_target_info response length (%d)\n",
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resplen);
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return -EIO;
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}
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target_info->version = __le32_to_cpu(resp.get_target_info.version);
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target_info->type = __le32_to_cpu(resp.get_target_info.type);
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return 0;
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}
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#define TARGET_VERSION_SENTINAL 0xffffffffu
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int ath10k_bmi_get_target_info_sdio(struct ath10k *ar,
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struct bmi_target_info *target_info)
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{
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struct bmi_cmd cmd;
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union bmi_resp resp;
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u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.get_target_info);
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u32 resplen, ver_len;
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__le32 tmp;
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int ret;
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ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi get target info SDIO\n");
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if (ar->bmi.done_sent) {
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ath10k_warn(ar, "BMI Get Target Info Command disallowed\n");
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return -EBUSY;
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}
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cmd.id = __cpu_to_le32(BMI_GET_TARGET_INFO);
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/* Step 1: Read 4 bytes of the target info and check if it is
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* the special sentinal version word or the first word in the
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* version response.
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*/
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resplen = sizeof(u32);
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ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, &tmp, &resplen);
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if (ret) {
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ath10k_warn(ar, "unable to read from device\n");
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return ret;
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}
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/* Some SDIO boards have a special sentinal byte before the real
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* version response.
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*/
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if (__le32_to_cpu(tmp) == TARGET_VERSION_SENTINAL) {
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/* Step 1b: Read the version length */
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resplen = sizeof(u32);
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ret = ath10k_hif_exchange_bmi_msg(ar, NULL, 0, &tmp,
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&resplen);
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if (ret) {
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ath10k_warn(ar, "unable to read from device\n");
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return ret;
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}
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}
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ver_len = __le32_to_cpu(tmp);
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/* Step 2: Check the target info length */
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if (ver_len != sizeof(resp.get_target_info)) {
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ath10k_warn(ar, "Unexpected target info len: %u. Expected: %zu\n",
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ver_len, sizeof(resp.get_target_info));
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return -EINVAL;
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}
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/* Step 3: Read the rest of the version response */
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resplen = sizeof(resp.get_target_info) - sizeof(u32);
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ret = ath10k_hif_exchange_bmi_msg(ar, NULL, 0,
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&resp.get_target_info.version,
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&resplen);
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if (ret) {
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ath10k_warn(ar, "unable to read from device\n");
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return ret;
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}
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target_info->version = __le32_to_cpu(resp.get_target_info.version);
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target_info->type = __le32_to_cpu(resp.get_target_info.type);
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return 0;
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}
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int ath10k_bmi_read_memory(struct ath10k *ar,
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u32 address, void *buffer, u32 length)
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{
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struct bmi_cmd cmd;
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union bmi_resp resp;
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u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.read_mem);
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u32 rxlen;
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int ret;
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ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi read address 0x%x length %d\n",
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address, length);
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if (ar->bmi.done_sent) {
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ath10k_warn(ar, "command disallowed\n");
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return -EBUSY;
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}
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while (length) {
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rxlen = min_t(u32, length, BMI_MAX_DATA_SIZE);
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cmd.id = __cpu_to_le32(BMI_READ_MEMORY);
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cmd.read_mem.addr = __cpu_to_le32(address);
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cmd.read_mem.len = __cpu_to_le32(rxlen);
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ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen,
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&resp, &rxlen);
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if (ret) {
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ath10k_warn(ar, "unable to read from the device (%d)\n",
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ret);
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return ret;
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}
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memcpy(buffer, resp.read_mem.payload, rxlen);
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address += rxlen;
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buffer += rxlen;
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length -= rxlen;
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}
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return 0;
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}
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int ath10k_bmi_write_soc_reg(struct ath10k *ar, u32 address, u32 reg_val)
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{
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struct bmi_cmd cmd;
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u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.write_soc_reg);
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int ret;
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ath10k_dbg(ar, ATH10K_DBG_BMI,
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"bmi write soc register 0x%08x val 0x%08x\n",
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address, reg_val);
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if (ar->bmi.done_sent) {
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ath10k_warn(ar, "bmi write soc register command in progress\n");
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return -EBUSY;
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}
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cmd.id = __cpu_to_le32(BMI_WRITE_SOC_REGISTER);
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cmd.write_soc_reg.addr = __cpu_to_le32(address);
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cmd.write_soc_reg.value = __cpu_to_le32(reg_val);
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ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, NULL, NULL);
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if (ret) {
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ath10k_warn(ar, "Unable to write soc register to device: %d\n",
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ret);
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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 ath10k_bmi_read_soc_reg(struct ath10k *ar, u32 address, u32 *reg_val)
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{
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struct bmi_cmd cmd;
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union bmi_resp resp;
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u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.read_soc_reg);
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u32 resplen = sizeof(resp.read_soc_reg);
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int ret;
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ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi read soc register 0x%08x\n",
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address);
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if (ar->bmi.done_sent) {
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ath10k_warn(ar, "bmi read soc register command in progress\n");
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return -EBUSY;
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}
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cmd.id = __cpu_to_le32(BMI_READ_SOC_REGISTER);
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cmd.read_soc_reg.addr = __cpu_to_le32(address);
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ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, &resp, &resplen);
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if (ret) {
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ath10k_warn(ar, "Unable to read soc register from device: %d\n",
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ret);
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return ret;
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}
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*reg_val = __le32_to_cpu(resp.read_soc_reg.value);
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ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi read soc register value 0x%08x\n",
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*reg_val);
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return 0;
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}
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int ath10k_bmi_write_memory(struct ath10k *ar,
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u32 address, const void *buffer, u32 length)
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{
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struct bmi_cmd cmd;
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u32 hdrlen = sizeof(cmd.id) + sizeof(cmd.write_mem);
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u32 txlen;
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int ret;
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ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi write address 0x%x length %d\n",
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address, length);
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if (ar->bmi.done_sent) {
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ath10k_warn(ar, "command disallowed\n");
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return -EBUSY;
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}
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while (length) {
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txlen = min(length, BMI_MAX_DATA_SIZE - hdrlen);
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/* copy before roundup to avoid reading beyond buffer*/
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memcpy(cmd.write_mem.payload, buffer, txlen);
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txlen = roundup(txlen, 4);
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cmd.id = __cpu_to_le32(BMI_WRITE_MEMORY);
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cmd.write_mem.addr = __cpu_to_le32(address);
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cmd.write_mem.len = __cpu_to_le32(txlen);
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ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, hdrlen + txlen,
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NULL, NULL);
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if (ret) {
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ath10k_warn(ar, "unable to write to the device (%d)\n",
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ret);
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return ret;
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}
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/* fixup roundup() so `length` zeroes out for last chunk */
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txlen = min(txlen, length);
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address += txlen;
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buffer += txlen;
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length -= txlen;
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}
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return 0;
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}
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int ath10k_bmi_execute(struct ath10k *ar, u32 address, u32 param, u32 *result)
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{
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struct bmi_cmd cmd;
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union bmi_resp resp;
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u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.execute);
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u32 resplen = sizeof(resp.execute);
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int ret;
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ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi execute address 0x%x param 0x%x\n",
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address, param);
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if (ar->bmi.done_sent) {
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ath10k_warn(ar, "command disallowed\n");
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return -EBUSY;
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}
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cmd.id = __cpu_to_le32(BMI_EXECUTE);
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cmd.execute.addr = __cpu_to_le32(address);
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cmd.execute.param = __cpu_to_le32(param);
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ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, &resp, &resplen);
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if (ret) {
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ath10k_warn(ar, "unable to read from the device\n");
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return ret;
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}
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if (resplen < sizeof(resp.execute)) {
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ath10k_warn(ar, "invalid execute response length (%d)\n",
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resplen);
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return -EIO;
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}
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*result = __le32_to_cpu(resp.execute.result);
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ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi execute result 0x%x\n", *result);
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return 0;
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}
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int ath10k_bmi_lz_data(struct ath10k *ar, const void *buffer, u32 length)
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{
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struct bmi_cmd cmd;
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u32 hdrlen = sizeof(cmd.id) + sizeof(cmd.lz_data);
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u32 txlen;
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int ret;
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ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi lz data buffer 0x%pK length %d\n",
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buffer, length);
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if (ar->bmi.done_sent) {
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ath10k_warn(ar, "command disallowed\n");
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return -EBUSY;
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}
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while (length) {
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txlen = min(length, BMI_MAX_DATA_SIZE - hdrlen);
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WARN_ON_ONCE(txlen & 3);
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cmd.id = __cpu_to_le32(BMI_LZ_DATA);
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cmd.lz_data.len = __cpu_to_le32(txlen);
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memcpy(cmd.lz_data.payload, buffer, txlen);
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ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, hdrlen + txlen,
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NULL, NULL);
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if (ret) {
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ath10k_warn(ar, "unable to write to the device\n");
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return ret;
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}
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buffer += txlen;
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length -= txlen;
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}
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return 0;
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}
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int ath10k_bmi_lz_stream_start(struct ath10k *ar, u32 address)
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{
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struct bmi_cmd cmd;
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u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.lz_start);
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int ret;
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ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi lz stream start address 0x%x\n",
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address);
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if (ar->bmi.done_sent) {
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ath10k_warn(ar, "command disallowed\n");
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return -EBUSY;
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}
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cmd.id = __cpu_to_le32(BMI_LZ_STREAM_START);
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cmd.lz_start.addr = __cpu_to_le32(address);
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ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, NULL, NULL);
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if (ret) {
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ath10k_warn(ar, "unable to Start LZ Stream to the device\n");
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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 ath10k_bmi_fast_download(struct ath10k *ar,
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u32 address, const void *buffer, u32 length)
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{
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u8 trailer[4] = {};
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u32 head_len = rounddown(length, 4);
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u32 trailer_len = length - head_len;
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int ret;
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ath10k_dbg(ar, ATH10K_DBG_BMI,
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"bmi fast download address 0x%x buffer 0x%pK length %d\n",
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address, buffer, length);
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ret = ath10k_bmi_lz_stream_start(ar, address);
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if (ret)
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return ret;
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/* copy the last word into a zero padded buffer */
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if (trailer_len > 0)
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memcpy(trailer, buffer + head_len, trailer_len);
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ret = ath10k_bmi_lz_data(ar, buffer, head_len);
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if (ret)
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return ret;
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if (trailer_len > 0)
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ret = ath10k_bmi_lz_data(ar, trailer, 4);
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if (ret != 0)
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return ret;
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/*
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* Close compressed stream and open a new (fake) one.
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* This serves mainly to flush Target caches.
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*/
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ret = ath10k_bmi_lz_stream_start(ar, 0x00);
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return ret;
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}
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