wcnss: Add support to download calibrated data
WCNSS Firmware needs raw NV data (settings & some register values),
to do the power-on calibration. Once firmware does the power-on
calibration; it can then re-use the calibrated data. And it need not
do the calibration again when the next time it boots. WCNSS sends this
calibrated data to Apps; and Apps saves this into a persistent area.
And in the subsequent bootup, Apps sends the calibrated data to WCNSS.
Add interfaces to read calibrated data; and also add inteface to write
calibrated data to platform driver.
Change-Id: Ic18d40150093024b10a53e28f8a423dd9d3846eb
CRs-Fixed: 458741
Signed-off-by: Sameer Thalappil <sameert@codeaurora.org>
diff --git a/drivers/net/wireless/wcnss/wcnss_riva.c b/drivers/net/wireless/wcnss/wcnss_riva.c
index d5ac58d..21fae6f 100644
--- a/drivers/net/wireless/wcnss/wcnss_riva.c
+++ b/drivers/net/wireless/wcnss/wcnss_riva.c
@@ -106,15 +106,12 @@
goto fail;
}
/* NV bit is set to indicate that platform driver is capable
- * of doing NV download. SSR should not set NV bit; during
- * SSR NV bin is downloaded by WLAN drive.
+ * of doing NV download.
*/
- if (!wcnss_cold_boot_done()) {
- pr_debug("wcnss: Indicate NV bin download\n");
- reg = readl_relaxed(RIVA_SPARE_OUT);
- reg |= NVBIN_DLND_BIT;
- writel_relaxed(reg, RIVA_SPARE_OUT);
- }
+ pr_debug("wcnss: Indicate NV bin download\n");
+ reg = readl_relaxed(RIVA_SPARE_OUT);
+ reg |= NVBIN_DLND_BIT;
+ writel_relaxed(reg, RIVA_SPARE_OUT);
writel_relaxed(0, RIVA_PMU_CFG);
reg = readl_relaxed(RIVA_PMU_CFG);
diff --git a/drivers/net/wireless/wcnss/wcnss_wlan.c b/drivers/net/wireless/wcnss/wcnss_wlan.c
index 8b28a50..23a9f15 100644
--- a/drivers/net/wireless/wcnss/wcnss_wlan.c
+++ b/drivers/net/wireless/wcnss/wcnss_wlan.c
@@ -25,6 +25,14 @@
#include <linux/gpio.h>
#include <linux/wakelock.h>
#include <linux/delay.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/clk.h>
+#include <linux/ratelimit.h>
+#include <linux/kthread.h>
+#include <linux/wait.h>
+#include <linux/uaccess.h>
+
#include <mach/peripheral-loader.h>
#include <mach/msm_smd.h>
#include <mach/msm_iomap.h>
@@ -44,6 +52,10 @@
module_param(has_48mhz_xo, int, S_IWUSR | S_IRUGO);
MODULE_PARM_DESC(has_48mhz_xo, "Is an external 48 MHz XO present");
+static int has_calibrated_data = WCNSS_CONFIG_UNSPECIFIED;
+module_param(has_calibrated_data, int, S_IWUSR | S_IRUGO);
+MODULE_PARM_DESC(has_calibrated_data, "whether calibrated data file available");
+
static DEFINE_SPINLOCK(reg_spinlock);
#define MSM_RIVA_PHYS 0x03204000
@@ -60,20 +72,27 @@
#define CCU_LAST_ADDR2_OFFSET 0x10c
#define WCNSS_CTRL_CHANNEL "WCNSS_CTRL"
-#define WCNSS_MAX_FRAME_SIZE 500
+#define WCNSS_MAX_FRAME_SIZE (4*1024)
#define WCNSS_VERSION_LEN 30
/* message types */
#define WCNSS_CTRL_MSG_START 0x01000000
-#define WCNSS_VERSION_REQ (WCNSS_CTRL_MSG_START + 0)
-#define WCNSS_VERSION_RSP (WCNSS_CTRL_MSG_START + 1)
-#define WCNSS_NVBIN_DNLD_REQ (WCNSS_CTRL_MSG_START + 2)
-#define WCNSS_NVBIN_DNLD_RSP (WCNSS_CTRL_MSG_START + 3)
+#define WCNSS_VERSION_REQ (WCNSS_CTRL_MSG_START + 0)
+#define WCNSS_VERSION_RSP (WCNSS_CTRL_MSG_START + 1)
+#define WCNSS_NVBIN_DNLD_REQ (WCNSS_CTRL_MSG_START + 2)
+#define WCNSS_NVBIN_DNLD_RSP (WCNSS_CTRL_MSG_START + 3)
+#define WCNSS_CALDATA_UPLD_REQ (WCNSS_CTRL_MSG_START + 4)
+#define WCNSS_CALDATA_UPLD_RSP (WCNSS_CTRL_MSG_START + 5)
+#define WCNSS_CALDATA_DNLD_REQ (WCNSS_CTRL_MSG_START + 6)
+#define WCNSS_CALDATA_DNLD_RSP (WCNSS_CTRL_MSG_START + 7)
#define VALID_VERSION(version) \
((strncmp(version, "INVALID", WCNSS_VERSION_LEN)) ? 1 : 0)
+#define FW_CALDATA_CAPABLE() \
+ ((penv->fw_major >= 1) && (penv->fw_minor >= 5) ? 1 : 0)
+
struct smd_msg_hdr {
unsigned int msg_type;
unsigned int msg_len;
@@ -109,6 +128,13 @@
* header, so NV fragment size as next multiple of 1Kb is 3Kb.
*/
#define NV_FRAGMENT_SIZE 3072
+#define MAX_CALIBRATED_DATA_SIZE (64*1024)
+#define LAST_FRAGMENT (1 << 0)
+#define MESSAGE_TO_FOLLOW (1 << 1)
+#define CAN_RECEIVE_CALDATA (1 << 15)
+#define WCNSS_RESP_SUCCESS 1
+#define WCNSS_RESP_FAIL 0
+
/* Macro to find the total number fragments of the NV bin Image */
#define TOTALFRAGMENTS(x) (((x % NV_FRAGMENT_SIZE) == 0) ? \
@@ -127,11 +153,14 @@
unsigned short frag_number;
/*
- * When set to 1 it indicates that no more fragments will
- * be sent. Receiver shall send back response message after
- * last fragment.
+ * bit 0: When set to 1 it indicates that no more fragments will
+ * be sent.
+ * bit 1: When set, a new message will be followed by this message
+ * bit 2- bit 14: Reserved
+ * bit 15: when set, it indicates that the sender is capable of
+ * receiving Calibrated data.
*/
- unsigned short is_last_fragment;
+ unsigned short msg_flags;
/* NV Image size (number of bytes) */
unsigned int nvbin_buffer_size;
@@ -143,6 +172,7 @@
*/
};
+
struct nvbin_dnld_req_msg {
/*
* Note: The length specified in nvbin_dnld_req_msg messages
@@ -153,6 +183,39 @@
struct nvbin_dnld_req_params dnld_req_params;
};
+struct cal_data_params {
+
+ /* The total size of the calibrated data, including all the
+ * fragments.
+ */
+ unsigned int total_size;
+ unsigned short frag_number;
+ /*
+ * bit 0: When set to 1 it indicates that no more fragments will
+ * be sent.
+ * bit 1: When set, a new message will be followed by this message
+ * bit 2- bit 15: Reserved
+ */
+ unsigned short msg_flags;
+ /*
+ * fragment size
+ */
+ unsigned int frag_size;
+ /*
+ * Following the frag_size, frag_size of fragmented
+ * data will be followed.
+ */
+};
+
+struct cal_data_msg {
+ /*
+ * The length specified in cal_data_msg should be
+ * hdr.msg_len = sizeof(cal_data_msg) + frag_size
+ */
+ struct smd_msg_hdr hdr;
+ struct cal_data_params cal_params;
+};
+
static struct {
struct platform_device *pdev;
void *pil;
@@ -163,9 +226,10 @@
const struct dev_pm_ops *pm_ops;
int triggered;
int smd_channel_ready;
- int cold_boot_done;
smd_channel_t *smd_ch;
unsigned char wcnss_version[WCNSS_VERSION_LEN];
+ unsigned char fw_major;
+ unsigned char fw_minor;
unsigned int serial_number;
int thermal_mitigation;
void (*tm_notify)(struct device *, int);
@@ -176,6 +240,20 @@
struct work_struct wcnssctrl_rx_work;
struct wake_lock wcnss_wake_lock;
void __iomem *msm_wcnss_base;
+ int ssr_boot;
+ int nv_downloaded;
+ unsigned char *fw_cal_data;
+ unsigned char *user_cal_data;
+ int fw_cal_rcvd;
+ int fw_cal_exp_frag;
+ int fw_cal_available;
+ int user_cal_read;
+ int user_cal_available;
+ int user_cal_rcvd;
+ int user_cal_exp_size;
+ int device_opened;
+ struct mutex dev_lock;
+ wait_queue_head_t read_wait;
} *penv = NULL;
static ssize_t wcnss_serial_number_show(struct device *dev,
@@ -358,21 +436,26 @@
switch (event) {
case SMD_EVENT_DATA:
len = smd_read_avail(penv->smd_ch);
- if (len < 0)
+ if (len < 0) {
pr_err("wcnss: failed to read from smd %d\n", len);
+ return;
+ }
schedule_work(&penv->wcnssctrl_rx_work);
break;
case SMD_EVENT_OPEN:
pr_debug("wcnss: opening WCNSS SMD channel :%s",
WCNSS_CTRL_CHANNEL);
- if (!VALID_VERSION(penv->wcnss_version))
- schedule_work(&penv->wcnssctrl_version_work);
+ schedule_work(&penv->wcnssctrl_version_work);
+
break;
case SMD_EVENT_CLOSE:
pr_debug("wcnss: closing WCNSS SMD channel :%s",
WCNSS_CTRL_CHANNEL);
+ /* This SMD is closed only during SSR */
+ penv->ssr_boot = true;
+ penv->nv_downloaded = 0;
break;
default:
@@ -521,6 +604,15 @@
}
EXPORT_SYMBOL(wcnss_get_wlan_config);
+int wcnss_device_ready(void)
+{
+ if (penv && penv->pdev && penv->nv_downloaded)
+ return 1;
+ return 0;
+}
+EXPORT_SYMBOL(wcnss_device_ready);
+
+
struct resource *wcnss_wlan_get_memory_map(struct device *dev)
{
if (penv && dev && (dev == &penv->pdev->dev) && penv->smd_channel_ready)
@@ -704,15 +796,13 @@
}
EXPORT_SYMBOL(wcnss_allow_suspend);
-int wcnss_cold_boot_done(void)
+int fw_cal_data_available(void)
{
if (penv)
- return penv->cold_boot_done;
+ return penv->fw_cal_available;
else
return -ENODEV;
}
-EXPORT_SYMBOL(wcnss_cold_boot_done);
-
static int wcnss_smd_tx(void *data, int len)
{
@@ -731,13 +821,144 @@
return ret;
}
+static unsigned char wcnss_fw_status(void)
+{
+ int len = 0;
+ int rc = 0;
+
+ unsigned char fw_status = 0xFF;
+
+ len = smd_read_avail(penv->smd_ch);
+ if (len < 1) {
+ pr_err("%s: invalid firmware status", __func__);
+ return fw_status;
+ }
+
+ rc = smd_read(penv->smd_ch, &fw_status, 1);
+ if (rc < 0) {
+ pr_err("%s: incomplete data read from smd\n", __func__);
+ return fw_status;
+ }
+ return fw_status;
+}
+
+static void wcnss_send_cal_rsp(unsigned char fw_status)
+{
+ struct smd_msg_hdr *rsphdr;
+ unsigned char *msg = NULL;
+ int rc;
+
+ msg = kmalloc((sizeof(struct smd_msg_hdr) + 1), GFP_KERNEL);
+ if (NULL == msg) {
+ pr_err("wcnss: %s: failed to get memory\n", __func__);
+ return;
+ }
+
+ rsphdr = (struct smd_msg_hdr *)msg;
+ rsphdr->msg_type = WCNSS_CALDATA_UPLD_RSP;
+ rsphdr->msg_len = sizeof(struct smd_msg_hdr) + 1;
+ memcpy(msg+sizeof(struct smd_msg_hdr), &fw_status, 1);
+
+ rc = wcnss_smd_tx(msg, rsphdr->msg_len);
+ if (rc < 0)
+ pr_err("wcnss: smd tx failed\n");
+}
+
+/* Collect calibrated data from WCNSS */
+void extract_cal_data(int len)
+{
+ int rc;
+ struct cal_data_params calhdr;
+ unsigned char fw_status = WCNSS_RESP_FAIL;
+
+ if (len < sizeof(struct cal_data_params)) {
+ pr_err("wcnss: incomplete cal header length\n");
+ return;
+ }
+
+ rc = smd_read(penv->smd_ch, (unsigned char *)&calhdr,
+ sizeof(struct cal_data_params));
+ if (rc < sizeof(struct cal_data_params)) {
+ pr_err("wcnss: incomplete cal header read from smd\n");
+ return;
+ }
+
+ if (penv->fw_cal_exp_frag != calhdr.frag_number) {
+ pr_err("wcnss: Invalid frgament");
+ goto exit;
+ }
+
+ if (calhdr.frag_size > WCNSS_MAX_FRAME_SIZE) {
+ pr_err("wcnss: Invalid fragment size");
+ goto exit;
+ }
+
+ if (0 == calhdr.frag_number) {
+ if (calhdr.total_size > MAX_CALIBRATED_DATA_SIZE) {
+ pr_err("wcnss: Invalid cal data size %d",
+ calhdr.total_size);
+ goto exit;
+ }
+ kfree(penv->fw_cal_data);
+ penv->fw_cal_rcvd = 0;
+ penv->fw_cal_data = kmalloc(calhdr.total_size,
+ GFP_KERNEL);
+ if (penv->fw_cal_data == NULL) {
+ smd_read(penv->smd_ch, NULL, calhdr.frag_size);
+ goto exit;
+ }
+ }
+
+ mutex_lock(&penv->dev_lock);
+ if (penv->fw_cal_rcvd + calhdr.frag_size >
+ MAX_CALIBRATED_DATA_SIZE) {
+ pr_err("calibrated data size is more than expected %d",
+ penv->fw_cal_rcvd + calhdr.frag_size);
+ penv->fw_cal_exp_frag = 0;
+ penv->fw_cal_rcvd = 0;
+ smd_read(penv->smd_ch, NULL, calhdr.frag_size);
+ goto unlock_exit;
+ }
+
+ rc = smd_read(penv->smd_ch, penv->fw_cal_data + penv->fw_cal_rcvd,
+ calhdr.frag_size);
+ if (rc < calhdr.frag_size)
+ goto unlock_exit;
+
+ penv->fw_cal_exp_frag++;
+ penv->fw_cal_rcvd += calhdr.frag_size;
+
+ if (calhdr.msg_flags & LAST_FRAGMENT) {
+ penv->fw_cal_exp_frag = 0;
+ penv->fw_cal_available = true;
+ pr_info("wcnss: cal data collection completed\n");
+ }
+ mutex_unlock(&penv->dev_lock);
+ wake_up(&penv->read_wait);
+
+ if (penv->fw_cal_available) {
+ fw_status = WCNSS_RESP_SUCCESS;
+ wcnss_send_cal_rsp(fw_status);
+ }
+ return;
+
+unlock_exit:
+ mutex_unlock(&penv->dev_lock);
+
+exit:
+ wcnss_send_cal_rsp(fw_status);
+ return;
+}
+
+
static void wcnssctrl_rx_handler(struct work_struct *worker)
{
int len = 0;
int rc = 0;
- unsigned char buf[WCNSS_MAX_FRAME_SIZE];
+ unsigned char buf[sizeof(struct wcnss_version)];
struct smd_msg_hdr *phdr;
struct wcnss_version *pversion;
+ unsigned char fw_status = 0;
len = smd_read_avail(penv->smd_ch);
if (len > WCNSS_MAX_FRAME_SIZE) {
@@ -748,23 +969,33 @@
if (len <= 0)
return;
- rc = smd_read(penv->smd_ch, buf, len);
- if (rc < len) {
- pr_err("wcnss: incomplete data read from smd\n");
+ rc = smd_read(penv->smd_ch, buf, sizeof(struct smd_msg_hdr));
+ if (rc < sizeof(struct smd_msg_hdr)) {
+ pr_err("wcnss: incomplete header read from smd\n");
return;
}
+ len -= sizeof(struct smd_msg_hdr);
phdr = (struct smd_msg_hdr *)buf;
switch (phdr->msg_type) {
case WCNSS_VERSION_RSP:
- pversion = (struct wcnss_version *)buf;
- if (len != sizeof(struct wcnss_version)) {
+ if (len != sizeof(struct wcnss_version)
+ - sizeof(struct smd_msg_hdr)) {
pr_err("wcnss: invalid version data from wcnss %d\n",
- len);
+ len);
return;
}
+ rc = smd_read(penv->smd_ch, buf+sizeof(struct smd_msg_hdr),
+ len);
+ if (rc < len) {
+ pr_err("wcnss: incomplete data read from smd\n");
+ return;
+ }
+ pversion = (struct wcnss_version *)buf;
+ penv->fw_major = pversion->major;
+ penv->fw_minor = pversion->minor;
snprintf(penv->wcnss_version, WCNSS_VERSION_LEN,
"%02x%02x%02x%02x", pversion->major, pversion->minor,
pversion->version, pversion->revision);
@@ -776,11 +1007,28 @@
if ((pversion->major >= 1) && (pversion->minor >= 4)) {
pr_info("wcnss: schedule dnld work for riva\n");
schedule_work(&penv->wcnssctrl_nvbin_dnld_work);
+ } else {
+ penv->nv_downloaded = true;
}
break;
case WCNSS_NVBIN_DNLD_RSP:
- pr_info("wcnss: received WCNSS_NVBIN_DNLD_RSP from ccpu\n");
+ penv->nv_downloaded = true;
+ fw_status = wcnss_fw_status();
+ pr_debug("wcnss: received WCNSS_NVBIN_DNLD_RSP from ccpu %u\n",
+ fw_status);
+ break;
+
+ case WCNSS_CALDATA_DNLD_RSP:
+ penv->nv_downloaded = true;
+ fw_status = wcnss_fw_status();
+ pr_debug("wcnss: received WCNSS_CALDATA_DNLD_RSP from ccpu %u\n",
+ fw_status);
+ break;
+
+ case WCNSS_CALDATA_UPLD_REQ:
+ penv->fw_cal_available = 0;
+ extract_cal_data(len);
break;
default:
@@ -803,7 +1051,8 @@
return;
}
-static void wcnss_nvbin_dnld_req(struct work_struct *worker)
+
+static void wcnss_nvbin_dnld(void)
{
int ret = 0;
struct nvbin_dnld_req_msg *dnld_req_msg;
@@ -820,8 +1069,8 @@
ret = request_firmware(&nv, NVBIN_FILE, dev);
if (ret || !nv || !nv->data || !nv->size) {
- pr_err("wcnss: wcnss_nvbin_dnld_req: request_firmware failed for %s\n",
- NVBIN_FILE);
+ pr_err("wcnss: %s: request_firmware failed for %s\n",
+ __func__, NVBIN_FILE);
return;
}
@@ -842,13 +1091,14 @@
NV_FRAGMENT_SIZE), GFP_KERNEL);
if (NULL == outbuffer) {
- pr_err("wcnss: wcnss_nvbin_dnld_req: failed to get buffer\n");
+ pr_err("wcnss: %s: failed to get buffer\n", __func__);
goto err_free_nv;
}
dnld_req_msg = (struct nvbin_dnld_req_msg *)outbuffer;
dnld_req_msg->hdr.msg_type = WCNSS_NVBIN_DNLD_REQ;
+ dnld_req_msg->dnld_req_params.msg_flags = 0;
for (count = 0; count < total_fragments; count++) {
dnld_req_msg->dnld_req_params.frag_number = count;
@@ -859,10 +1109,14 @@
if (!cur_frag_size)
cur_frag_size = NV_FRAGMENT_SIZE;
- dnld_req_msg->dnld_req_params.is_last_fragment = 1;
+ dnld_req_msg->dnld_req_params.msg_flags |=
+ LAST_FRAGMENT;
+ dnld_req_msg->dnld_req_params.msg_flags |=
+ CAN_RECEIVE_CALDATA;
} else {
cur_frag_size = NV_FRAGMENT_SIZE;
- dnld_req_msg->dnld_req_params.is_last_fragment = 0;
+ dnld_req_msg->dnld_req_params.msg_flags &=
+ ~LAST_FRAGMENT;
}
dnld_req_msg->dnld_req_params.nvbin_buffer_size =
@@ -880,7 +1134,8 @@
retry_count = 0;
while ((ret == -ENOSPC) && (retry_count <= 3)) {
- pr_debug("wcnss: wcnss_nvbin_dnld_req: smd tx failed, ENOSPC\n");
+ pr_debug("wcnss: %s: smd tx failed, ENOSPC\n",
+ __func__);
pr_debug("fragment: %d, len: %d, TotFragments: %d, retry_count: %d\n",
count, dnld_req_msg->hdr.msg_len,
total_fragments, retry_count);
@@ -893,7 +1148,7 @@
}
if (ret < 0) {
- pr_err("wcnss: wcnss_nvbin_dnld_req: smd tx failed\n");
+ pr_err("wcnss: %s: smd tx failed\n", __func__);
pr_err("fragment %d, len: %d, TotFragments: %d, retry_count: %d\n",
count, dnld_req_msg->hdr.msg_len,
total_fragments, retry_count);
@@ -912,6 +1167,138 @@
return;
}
+
+static void wcnss_caldata_dnld(const void *cal_data,
+ unsigned int cal_data_size, bool msg_to_follow)
+{
+ int ret = 0;
+ struct cal_data_msg *cal_msg;
+ unsigned short total_fragments = 0;
+ unsigned short count = 0;
+ unsigned short retry_count = 0;
+ unsigned short cur_frag_size = 0;
+ unsigned char *outbuffer = NULL;
+
+ total_fragments = TOTALFRAGMENTS(cal_data_size);
+
+ outbuffer = kmalloc((sizeof(struct cal_data_msg) +
+ NV_FRAGMENT_SIZE), GFP_KERNEL);
+
+ if (NULL == outbuffer) {
+ pr_err("wcnss: %s: failed to get buffer\n", __func__);
+ return;
+ }
+
+ cal_msg = (struct cal_data_msg *)outbuffer;
+
+ cal_msg->hdr.msg_type = WCNSS_CALDATA_DNLD_REQ;
+ cal_msg->cal_params.msg_flags = 0;
+
+ for (count = 0; count < total_fragments; count++) {
+ cal_msg->cal_params.frag_number = count;
+
+ if (count == (total_fragments - 1)) {
+ cur_frag_size = cal_data_size % NV_FRAGMENT_SIZE;
+ if (!cur_frag_size)
+ cur_frag_size = NV_FRAGMENT_SIZE;
+
+ cal_msg->cal_params.msg_flags
+ |= LAST_FRAGMENT;
+ if (msg_to_follow)
+ cal_msg->cal_params.msg_flags |=
+ MESSAGE_TO_FOLLOW;
+ } else {
+ cur_frag_size = NV_FRAGMENT_SIZE;
+ cal_msg->cal_params.msg_flags &=
+ ~LAST_FRAGMENT;
+ }
+
+ cal_msg->cal_params.total_size = cal_data_size;
+ cal_msg->cal_params.frag_size =
+ cur_frag_size;
+
+ cal_msg->hdr.msg_len =
+ sizeof(struct cal_data_msg) + cur_frag_size;
+
+ memcpy((outbuffer + sizeof(struct cal_data_msg)),
+ (cal_data + count * NV_FRAGMENT_SIZE),
+ cur_frag_size);
+
+ ret = wcnss_smd_tx(outbuffer, cal_msg->hdr.msg_len);
+
+ retry_count = 0;
+ while ((ret == -ENOSPC) && (retry_count <= 3)) {
+ pr_debug("wcnss: %s: smd tx failed, ENOSPC\n",
+ __func__);
+ pr_debug("fragment: %d, len: %d, TotFragments: %d, retry_count: %d\n",
+ count, cal_msg->hdr.msg_len,
+ total_fragments, retry_count);
+
+ /* wait and try again */
+ msleep(20);
+ retry_count++;
+ ret = wcnss_smd_tx(outbuffer,
+ cal_msg->hdr.msg_len);
+ }
+
+ if (ret < 0) {
+ pr_err("wcnss: %s: smd tx failed\n", __func__);
+ pr_err("fragment %d, len: %d, TotFragments: %d, retry_count: %d\n",
+ count, cal_msg->hdr.msg_len,
+ total_fragments, retry_count);
+ goto err_dnld;
+ }
+ }
+
+
+err_dnld:
+ /* free buffer */
+ kfree(outbuffer);
+
+ return;
+}
+
+
+static void wcnss_nvbin_dnld_main(struct work_struct *worker)
+{
+ int retry = 0;
+
+ if (!FW_CALDATA_CAPABLE())
+ goto nv_download;
+
+ if (!penv->fw_cal_available && WCNSS_CONFIG_UNSPECIFIED
+ != has_calibrated_data && !penv->user_cal_available) {
+ while (!penv->user_cal_available && retry++ < 5)
+ msleep(500);
+ }
+
+ /* only cal data is sent during ssr (if available) */
+ if (penv->fw_cal_available && penv->ssr_boot) {
+ pr_info_ratelimited("wcnss: cal download during SSR, using fw cal");
+ wcnss_caldata_dnld(penv->fw_cal_data, penv->fw_cal_rcvd, false);
+ return;
+
+ } else if (penv->user_cal_available && penv->ssr_boot) {
+ pr_info_ratelimited("wcnss: cal download during SSR, using user cal");
+ wcnss_caldata_dnld(penv->user_cal_data,
+ penv->user_cal_rcvd, false);
+ return;
+
+ } else if (penv->user_cal_available) {
+ pr_info_ratelimited("wcnss: cal download during cold boot, using user cal");
+ wcnss_caldata_dnld(penv->user_cal_data,
+ penv->user_cal_rcvd, true);
+ }
+
+nv_download:
+ pr_info_ratelimited("wcnss: NV download");
+ wcnss_nvbin_dnld();
+
+ return;
+}
+
+
+
static int
wcnss_trigger_config(struct platform_device *pdev)
{
@@ -982,7 +1369,7 @@
INIT_WORK(&penv->wcnssctrl_rx_work, wcnssctrl_rx_handler);
INIT_WORK(&penv->wcnssctrl_version_work, wcnss_send_version_req);
- INIT_WORK(&penv->wcnssctrl_nvbin_dnld_work, wcnss_nvbin_dnld_req);
+ INIT_WORK(&penv->wcnssctrl_nvbin_dnld_work, wcnss_nvbin_dnld_main);
wake_lock_init(&penv->wcnss_wake_lock, WAKE_LOCK_SUSPEND, "wcnss");
@@ -992,8 +1379,6 @@
goto fail_wake;
}
- penv->cold_boot_done = 1;
-
return 0;
fail_wake:
@@ -1013,20 +1398,128 @@
return ret;
}
-#ifndef MODULE
static int wcnss_node_open(struct inode *inode, struct file *file)
{
struct platform_device *pdev;
- pr_info(DEVICE " triggered by userspace\n");
+ /* first open is only to trigger WCNSS platform driver */
+ if (!penv->triggered) {
+ pr_info(DEVICE " triggered by userspace\n");
+ pdev = penv->pdev;
+ return wcnss_trigger_config(pdev);
- pdev = penv->pdev;
- return wcnss_trigger_config(pdev);
+ } else if (penv->device_opened) {
+ pr_info(DEVICE " already opened\n");
+ return -EBUSY;
+ }
+
+ mutex_lock(&penv->dev_lock);
+ penv->user_cal_rcvd = 0;
+ penv->user_cal_read = 0;
+ penv->user_cal_available = false;
+ penv->user_cal_data = NULL;
+ penv->device_opened = 1;
+ mutex_unlock(&penv->dev_lock);
+
+ return 0;
}
+static ssize_t wcnss_wlan_read(struct file *fp, char __user
+ *buffer, size_t count, loff_t *position)
+{
+ int rc = 0;
+
+ if (!penv->device_opened)
+ return -EFAULT;
+
+ rc = wait_event_interruptible(penv->read_wait, penv->fw_cal_rcvd
+ > penv->user_cal_read || penv->fw_cal_available);
+
+ if (rc < 0)
+ return rc;
+
+ mutex_lock(&penv->dev_lock);
+
+ if (penv->fw_cal_available && penv->fw_cal_rcvd
+ == penv->user_cal_read) {
+ rc = 0;
+ goto exit;
+ }
+
+ if (count > penv->fw_cal_rcvd - penv->user_cal_read)
+ count = penv->fw_cal_rcvd - penv->user_cal_read;
+
+ rc = copy_to_user(buffer, penv->fw_cal_data +
+ penv->user_cal_read, count);
+ if (rc == 0) {
+ penv->user_cal_read += count;
+ rc = count;
+ }
+
+exit:
+ mutex_unlock(&penv->dev_lock);
+ return rc;
+}
+
+/* first (valid) write to this device should be 4 bytes cal file size */
+static ssize_t wcnss_wlan_write(struct file *fp, const char __user
+ *user_buffer, size_t count, loff_t *position)
+{
+ int rc = 0;
+ int size = 0;
+
+ if (!penv->device_opened || penv->user_cal_available)
+ return -EFAULT;
+
+ if (penv->user_cal_rcvd == 0 && count >= 4
+ && !penv->user_cal_data) {
+ rc = copy_from_user((void *)&size, user_buffer, 4);
+ if (size > MAX_CALIBRATED_DATA_SIZE) {
+ pr_err(DEVICE " invalid size to write %d\n", size);
+ return -EFAULT;
+ }
+
+ rc += count;
+ count -= 4;
+ penv->user_cal_exp_size = size;
+ penv->user_cal_data = kmalloc(size, GFP_KERNEL);
+ if (penv->user_cal_data == NULL) {
+ pr_err(DEVICE " no memory to write\n");
+ return -ENOMEM;
+ }
+ if (0 == count)
+ goto exit;
+
+ } else if (penv->user_cal_rcvd == 0 && count < 4)
+ return -EFAULT;
+
+ if (MAX_CALIBRATED_DATA_SIZE < count + penv->user_cal_rcvd) {
+ pr_err(DEVICE " invalid size to write %d\n", count +
+ penv->user_cal_rcvd);
+ rc = -ENOMEM;
+ goto exit;
+ }
+ rc = copy_from_user((void *)penv->user_cal_data +
+ penv->user_cal_rcvd, user_buffer, count);
+ if (0 == rc) {
+ penv->user_cal_rcvd += count;
+ rc += count;
+ }
+ if (penv->user_cal_rcvd == penv->user_cal_exp_size) {
+ penv->user_cal_available = true;
+ pr_info_ratelimited("wcnss: user cal written");
+ }
+
+exit:
+ return rc;
+}
+
+
static const struct file_operations wcnss_node_fops = {
.owner = THIS_MODULE,
.open = wcnss_node_open,
+ .read = wcnss_wlan_read,
+ .write = wcnss_wlan_write,
};
static struct miscdevice wcnss_misc = {
@@ -1034,8 +1527,6 @@
.name = DEVICE,
.fops = &wcnss_node_fops,
};
-#endif /* ifndef MODULE */
-
static int __devinit
wcnss_wlan_probe(struct platform_device *pdev)
@@ -1061,19 +1552,8 @@
if (ret)
return -ENOENT;
-
-#ifdef MODULE
-
- /*
- * Since we were built as a module, we are running because
- * the module was loaded, therefore we assume userspace
- * applications are available to service PIL, so we can
- * trigger the WCNSS configuration now
- */
- pr_info(DEVICE " probed in MODULE mode\n");
- return wcnss_trigger_config(pdev);
-
-#else
+ mutex_init(&penv->dev_lock);
+ init_waitqueue_head(&penv->read_wait);
/*
* Since we were built into the kernel we'll be called as part
@@ -1087,7 +1567,6 @@
pr_info(DEVICE " probed in built-in mode\n");
return misc_register(&wcnss_misc);
-#endif
}
static int __devexit
diff --git a/include/linux/wcnss_wlan.h b/include/linux/wcnss_wlan.h
index ee18b14..4c99e77 100644
--- a/include/linux/wcnss_wlan.h
+++ b/include/linux/wcnss_wlan.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2011-2013, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@@ -27,6 +27,7 @@
#define WCNSS_WLAN_IRQ_INVALID -1
#define HAVE_WCNSS_RESET_INTR 1
+#define HAVE_WCNSS_CAL_DOWNLOAD 1
struct device *wcnss_wlan_get_device(void);
struct resource *wcnss_wlan_get_memory_map(struct device *dev);
@@ -53,10 +54,10 @@
void wcnss_prevent_suspend(void);
void wcnss_ssr_boot_notify(void);
void wcnss_reset_intr(void);
-int wcnss_cold_boot_done(void);
void wcnss_riva_dump_pmic_regs(void);
void *wcnss_prealloc_get(unsigned int size);
int wcnss_prealloc_put(void *ptr);
+int wcnss_device_ready(void);
#define wcnss_wlan_get_drvdata(dev) dev_get_drvdata(dev)
#define wcnss_wlan_set_drvdata(dev, data) dev_set_drvdata((dev), (data))