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Diffstat (limited to 'drivers/net/wireless/ath/ath10k/bmi.c')
-rw-r--r--drivers/net/wireless/ath/ath10k/bmi.c461
1 files changed, 461 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath10k/bmi.c b/drivers/net/wireless/ath/ath10k/bmi.c
new file mode 100644
index 000000000..af4978d6a
--- /dev/null
+++ b/drivers/net/wireless/ath/ath10k/bmi.c
@@ -0,0 +1,461 @@
+/*
+ * Copyright (c) 2005-2011 Atheros Communications Inc.
+ * Copyright (c) 2011-2014,2016-2017 Qualcomm Atheros, Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "bmi.h"
+#include "hif.h"
+#include "debug.h"
+#include "htc.h"
+#include "hw.h"
+
+void ath10k_bmi_start(struct ath10k *ar)
+{
+ int ret;
+
+ ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi start\n");
+
+ ar->bmi.done_sent = false;
+
+ /* Enable hardware clock to speed up firmware download */
+ if (ar->hw_params.hw_ops->enable_pll_clk) {
+ ret = ar->hw_params.hw_ops->enable_pll_clk(ar);
+ ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi enable pll ret %d\n", ret);
+ }
+}
+
+int ath10k_bmi_done(struct ath10k *ar)
+{
+ struct bmi_cmd cmd;
+ u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.done);
+ int ret;
+
+ ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi done\n");
+
+ if (ar->bmi.done_sent) {
+ ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi skipped\n");
+ return 0;
+ }
+
+ ar->bmi.done_sent = true;
+ cmd.id = __cpu_to_le32(BMI_DONE);
+
+ ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, NULL, NULL);
+ if (ret) {
+ ath10k_warn(ar, "unable to write to the device: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+int ath10k_bmi_get_target_info(struct ath10k *ar,
+ struct bmi_target_info *target_info)
+{
+ struct bmi_cmd cmd;
+ union bmi_resp resp;
+ u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.get_target_info);
+ u32 resplen = sizeof(resp.get_target_info);
+ int ret;
+
+ ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi get target info\n");
+
+ if (ar->bmi.done_sent) {
+ ath10k_warn(ar, "BMI Get Target Info Command disallowed\n");
+ return -EBUSY;
+ }
+
+ cmd.id = __cpu_to_le32(BMI_GET_TARGET_INFO);
+
+ ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, &resp, &resplen);
+ if (ret) {
+ ath10k_warn(ar, "unable to get target info from device\n");
+ return ret;
+ }
+
+ if (resplen < sizeof(resp.get_target_info)) {
+ ath10k_warn(ar, "invalid get_target_info response length (%d)\n",
+ resplen);
+ return -EIO;
+ }
+
+ target_info->version = __le32_to_cpu(resp.get_target_info.version);
+ target_info->type = __le32_to_cpu(resp.get_target_info.type);
+
+ return 0;
+}
+
+#define TARGET_VERSION_SENTINAL 0xffffffffu
+
+int ath10k_bmi_get_target_info_sdio(struct ath10k *ar,
+ struct bmi_target_info *target_info)
+{
+ struct bmi_cmd cmd;
+ union bmi_resp resp;
+ u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.get_target_info);
+ u32 resplen, ver_len;
+ __le32 tmp;
+ int ret;
+
+ ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi get target info SDIO\n");
+
+ if (ar->bmi.done_sent) {
+ ath10k_warn(ar, "BMI Get Target Info Command disallowed\n");
+ return -EBUSY;
+ }
+
+ cmd.id = __cpu_to_le32(BMI_GET_TARGET_INFO);
+
+ /* Step 1: Read 4 bytes of the target info and check if it is
+ * the special sentinal version word or the first word in the
+ * version response.
+ */
+ resplen = sizeof(u32);
+ ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, &tmp, &resplen);
+ if (ret) {
+ ath10k_warn(ar, "unable to read from device\n");
+ return ret;
+ }
+
+ /* Some SDIO boards have a special sentinal byte before the real
+ * version response.
+ */
+ if (__le32_to_cpu(tmp) == TARGET_VERSION_SENTINAL) {
+ /* Step 1b: Read the version length */
+ resplen = sizeof(u32);
+ ret = ath10k_hif_exchange_bmi_msg(ar, NULL, 0, &tmp,
+ &resplen);
+ if (ret) {
+ ath10k_warn(ar, "unable to read from device\n");
+ return ret;
+ }
+ }
+
+ ver_len = __le32_to_cpu(tmp);
+
+ /* Step 2: Check the target info length */
+ if (ver_len != sizeof(resp.get_target_info)) {
+ ath10k_warn(ar, "Unexpected target info len: %u. Expected: %zu\n",
+ ver_len, sizeof(resp.get_target_info));
+ return -EINVAL;
+ }
+
+ /* Step 3: Read the rest of the version response */
+ resplen = sizeof(resp.get_target_info) - sizeof(u32);
+ ret = ath10k_hif_exchange_bmi_msg(ar, NULL, 0,
+ &resp.get_target_info.version,
+ &resplen);
+ if (ret) {
+ ath10k_warn(ar, "unable to read from device\n");
+ return ret;
+ }
+
+ target_info->version = __le32_to_cpu(resp.get_target_info.version);
+ target_info->type = __le32_to_cpu(resp.get_target_info.type);
+
+ return 0;
+}
+
+int ath10k_bmi_read_memory(struct ath10k *ar,
+ u32 address, void *buffer, u32 length)
+{
+ struct bmi_cmd cmd;
+ union bmi_resp resp;
+ u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.read_mem);
+ u32 rxlen;
+ int ret;
+
+ ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi read address 0x%x length %d\n",
+ address, length);
+
+ if (ar->bmi.done_sent) {
+ ath10k_warn(ar, "command disallowed\n");
+ return -EBUSY;
+ }
+
+ while (length) {
+ rxlen = min_t(u32, length, BMI_MAX_DATA_SIZE);
+
+ cmd.id = __cpu_to_le32(BMI_READ_MEMORY);
+ cmd.read_mem.addr = __cpu_to_le32(address);
+ cmd.read_mem.len = __cpu_to_le32(rxlen);
+
+ ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen,
+ &resp, &rxlen);
+ if (ret) {
+ ath10k_warn(ar, "unable to read from the device (%d)\n",
+ ret);
+ return ret;
+ }
+
+ memcpy(buffer, resp.read_mem.payload, rxlen);
+ address += rxlen;
+ buffer += rxlen;
+ length -= rxlen;
+ }
+
+ return 0;
+}
+
+int ath10k_bmi_write_soc_reg(struct ath10k *ar, u32 address, u32 reg_val)
+{
+ struct bmi_cmd cmd;
+ u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.write_soc_reg);
+ int ret;
+
+ ath10k_dbg(ar, ATH10K_DBG_BMI,
+ "bmi write soc register 0x%08x val 0x%08x\n",
+ address, reg_val);
+
+ if (ar->bmi.done_sent) {
+ ath10k_warn(ar, "bmi write soc register command in progress\n");
+ return -EBUSY;
+ }
+
+ cmd.id = __cpu_to_le32(BMI_WRITE_SOC_REGISTER);
+ cmd.write_soc_reg.addr = __cpu_to_le32(address);
+ cmd.write_soc_reg.value = __cpu_to_le32(reg_val);
+
+ ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, NULL, NULL);
+ if (ret) {
+ ath10k_warn(ar, "Unable to write soc register to device: %d\n",
+ ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+int ath10k_bmi_read_soc_reg(struct ath10k *ar, u32 address, u32 *reg_val)
+{
+ struct bmi_cmd cmd;
+ union bmi_resp resp;
+ u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.read_soc_reg);
+ u32 resplen = sizeof(resp.read_soc_reg);
+ int ret;
+
+ ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi read soc register 0x%08x\n",
+ address);
+
+ if (ar->bmi.done_sent) {
+ ath10k_warn(ar, "bmi read soc register command in progress\n");
+ return -EBUSY;
+ }
+
+ cmd.id = __cpu_to_le32(BMI_READ_SOC_REGISTER);
+ cmd.read_soc_reg.addr = __cpu_to_le32(address);
+
+ ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, &resp, &resplen);
+ if (ret) {
+ ath10k_warn(ar, "Unable to read soc register from device: %d\n",
+ ret);
+ return ret;
+ }
+
+ *reg_val = __le32_to_cpu(resp.read_soc_reg.value);
+
+ ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi read soc register value 0x%08x\n",
+ *reg_val);
+
+ return 0;
+}
+
+int ath10k_bmi_write_memory(struct ath10k *ar,
+ u32 address, const void *buffer, u32 length)
+{
+ struct bmi_cmd cmd;
+ u32 hdrlen = sizeof(cmd.id) + sizeof(cmd.write_mem);
+ u32 txlen;
+ int ret;
+
+ ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi write address 0x%x length %d\n",
+ address, length);
+
+ if (ar->bmi.done_sent) {
+ ath10k_warn(ar, "command disallowed\n");
+ return -EBUSY;
+ }
+
+ while (length) {
+ txlen = min(length, BMI_MAX_DATA_SIZE - hdrlen);
+
+ /* copy before roundup to avoid reading beyond buffer*/
+ memcpy(cmd.write_mem.payload, buffer, txlen);
+ txlen = roundup(txlen, 4);
+
+ cmd.id = __cpu_to_le32(BMI_WRITE_MEMORY);
+ cmd.write_mem.addr = __cpu_to_le32(address);
+ cmd.write_mem.len = __cpu_to_le32(txlen);
+
+ ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, hdrlen + txlen,
+ NULL, NULL);
+ if (ret) {
+ ath10k_warn(ar, "unable to write to the device (%d)\n",
+ ret);
+ return ret;
+ }
+
+ /* fixup roundup() so `length` zeroes out for last chunk */
+ txlen = min(txlen, length);
+
+ address += txlen;
+ buffer += txlen;
+ length -= txlen;
+ }
+
+ return 0;
+}
+
+int ath10k_bmi_execute(struct ath10k *ar, u32 address, u32 param, u32 *result)
+{
+ struct bmi_cmd cmd;
+ union bmi_resp resp;
+ u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.execute);
+ u32 resplen = sizeof(resp.execute);
+ int ret;
+
+ ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi execute address 0x%x param 0x%x\n",
+ address, param);
+
+ if (ar->bmi.done_sent) {
+ ath10k_warn(ar, "command disallowed\n");
+ return -EBUSY;
+ }
+
+ cmd.id = __cpu_to_le32(BMI_EXECUTE);
+ cmd.execute.addr = __cpu_to_le32(address);
+ cmd.execute.param = __cpu_to_le32(param);
+
+ ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, &resp, &resplen);
+ if (ret) {
+ ath10k_warn(ar, "unable to read from the device\n");
+ return ret;
+ }
+
+ if (resplen < sizeof(resp.execute)) {
+ ath10k_warn(ar, "invalid execute response length (%d)\n",
+ resplen);
+ return -EIO;
+ }
+
+ *result = __le32_to_cpu(resp.execute.result);
+
+ ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi execute result 0x%x\n", *result);
+
+ return 0;
+}
+
+int ath10k_bmi_lz_data(struct ath10k *ar, const void *buffer, u32 length)
+{
+ struct bmi_cmd cmd;
+ u32 hdrlen = sizeof(cmd.id) + sizeof(cmd.lz_data);
+ u32 txlen;
+ int ret;
+
+ ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi lz data buffer 0x%pK length %d\n",
+ buffer, length);
+
+ if (ar->bmi.done_sent) {
+ ath10k_warn(ar, "command disallowed\n");
+ return -EBUSY;
+ }
+
+ while (length) {
+ txlen = min(length, BMI_MAX_DATA_SIZE - hdrlen);
+
+ WARN_ON_ONCE(txlen & 3);
+
+ cmd.id = __cpu_to_le32(BMI_LZ_DATA);
+ cmd.lz_data.len = __cpu_to_le32(txlen);
+ memcpy(cmd.lz_data.payload, buffer, txlen);
+
+ ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, hdrlen + txlen,
+ NULL, NULL);
+ if (ret) {
+ ath10k_warn(ar, "unable to write to the device\n");
+ return ret;
+ }
+
+ buffer += txlen;
+ length -= txlen;
+ }
+
+ return 0;
+}
+
+int ath10k_bmi_lz_stream_start(struct ath10k *ar, u32 address)
+{
+ struct bmi_cmd cmd;
+ u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.lz_start);
+ int ret;
+
+ ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi lz stream start address 0x%x\n",
+ address);
+
+ if (ar->bmi.done_sent) {
+ ath10k_warn(ar, "command disallowed\n");
+ return -EBUSY;
+ }
+
+ cmd.id = __cpu_to_le32(BMI_LZ_STREAM_START);
+ cmd.lz_start.addr = __cpu_to_le32(address);
+
+ ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, NULL, NULL);
+ if (ret) {
+ ath10k_warn(ar, "unable to Start LZ Stream to the device\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+int ath10k_bmi_fast_download(struct ath10k *ar,
+ u32 address, const void *buffer, u32 length)
+{
+ u8 trailer[4] = {};
+ u32 head_len = rounddown(length, 4);
+ u32 trailer_len = length - head_len;
+ int ret;
+
+ ath10k_dbg(ar, ATH10K_DBG_BMI,
+ "bmi fast download address 0x%x buffer 0x%pK length %d\n",
+ address, buffer, length);
+
+ ret = ath10k_bmi_lz_stream_start(ar, address);
+ if (ret)
+ return ret;
+
+ /* copy the last word into a zero padded buffer */
+ if (trailer_len > 0)
+ memcpy(trailer, buffer + head_len, trailer_len);
+
+ ret = ath10k_bmi_lz_data(ar, buffer, head_len);
+ if (ret)
+ return ret;
+
+ if (trailer_len > 0)
+ ret = ath10k_bmi_lz_data(ar, trailer, 4);
+
+ if (ret != 0)
+ return ret;
+
+ /*
+ * Close compressed stream and open a new (fake) one.
+ * This serves mainly to flush Target caches.
+ */
+ ret = ath10k_bmi_lz_stream_start(ar, 0x00);
+
+ return ret;
+}
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