wcn6740: support coredump crash information

Bug: 205246511
Change-Id: I61551923f2b727646fb1cc061d9621ee1666cfa0

4 files changed, 66 insertions, 3 deletions

diff --git a/cnss2/pci.c b/cnss2/pci.c
index f84a86f..d59469b 100644
--- a/cnss2/pci.c
+++ b/cnss2/pci.c
@@ -547,6 +547,10 @@ static struct cnss_misc_reg syspm_reg_access_seq[] = {
 #define WLAON_REG_SIZE ARRAY_SIZE(wlaon_reg_access_seq)
 #define SYSPM_REG_SIZE ARRAY_SIZE(syspm_reg_access_seq)
 
+#if IS_ENABLED(CONFIG_WCN_GOOGLE)
+extern void crash_info_handler(u8 *info);
+#endif //CONFIG_WCN_GOOGLE
+
 #if IS_ENABLED(CONFIG_MHI_BUS_MISC)
 static void cnss_mhi_debug_reg_dump(struct cnss_pci_data *pci_priv)
 {
@@ -555,7 +559,11 @@ static void cnss_mhi_debug_reg_dump(struct cnss_pci_data *pci_priv)
 
 static void cnss_mhi_dump_sfr(struct cnss_pci_data *pci_priv)
 {
+#if IS_ENABLED(CONFIG_WCN_GOOGLE)
+	mhi_dump_sfr(pci_priv->mhi_ctrl, crash_info_handler);
+#else
 	mhi_dump_sfr(pci_priv->mhi_ctrl);
+#endif //CONFIG_WCN_GOOGLE
 }
 
 static bool cnss_mhi_scan_rddm_cookie(struct cnss_pci_data *pci_priv,
diff --git a/cnss2/pci_platform_google.c b/cnss2/pci_platform_google.c
index 6446d3c..bcd2612 100644
--- a/cnss2/pci_platform_google.c
+++ b/cnss2/pci_platform_google.c
@@ -347,8 +347,31 @@ static void sscd_set_coredump(void *buf, int buf_len, const char *info)
 		memset(&seg, 0, sizeof(seg));
 		seg.addr = buf;
 		seg.size = buf_len;
-		pdata->sscd_report(&sscd_dev, &seg, 1, 0, info);
+		if(info) {
+			pdata->sscd_report(&sscd_dev, &seg, 1, 0, info);
+		} else {
+			pdata->sscd_report(&sscd_dev, &seg, 1, 0, "Unknown");
+		}
+
+	}
+}
+
+u8 *crash_info = 0;
+void crash_info_handler(u8 *info)
+{
+	u32 string_len = 0;
+
+	if (crash_info) {
+		kfree(crash_info);
+		crash_info = 0;
 	}
+
+	string_len = strlen(info);
+	crash_info = kzalloc(string_len + 1, GFP_KERNEL);
+	if (!crash_info)
+		return;
+	strncpy(crash_info, info, string_len);
+	crash_info[string_len] = '\0';
 }
 
 int qcom_elf_dump(struct list_head *segs, struct device *dev)
@@ -428,7 +451,12 @@ int qcom_elf_dump(struct list_head *segs, struct device *dev)
 	/*
 	 * SSCD integration
 	 */
-	sscd_set_coredump(data, data_size, "Test Crash Info");
+	sscd_set_coredump(data, data_size, crash_info);
+	if (crash_info) {
+		kfree(crash_info);
+		crash_info = 0;
+	}
+
 
 	vfree(data);
 	return 0;
diff --git a/inc/mhi_misc.h b/inc/mhi_misc.h
index de3f585..75b25f1 100644
--- a/inc/mhi_misc.h
+++ b/inc/mhi_misc.h
@@ -99,7 +99,11 @@ void mhi_debug_reg_dump(struct mhi_controller *mhi_cntrl);
  * mhi_dump_sfr - Print SFR string from RDDM table.
  * @mhi_cntrl: MHI controller
  */
+#if IS_ENABLED(CONFIG_WCN_GOOGLE)
+void mhi_dump_sfr(struct mhi_controller *mhi_cntrl, void (*crash_info_handler)(u8*));
+#else
 void mhi_dump_sfr(struct mhi_controller *mhi_cntrl);
+#endif //CONFIG_WCN_GOOGLE
 
 /**
  * mhi_device_configure - Allow devices with offload channels to setup their own
@@ -357,9 +361,15 @@ void mhi_debug_reg_dump(struct mhi_controller *mhi_cntrl)
  * mhi_dump_sfr - Print SFR string from RDDM table.
  * @mhi_cntrl: MHI controller
  */
+#if IS_ENABLED(CONFIG_WCN_GOOGLE)
+void mhi_dump_sfr(struct mhi_controller *mhi_cntrl, void (*crash_info_handler)(u8*))
+{
+}
+#else
 void mhi_dump_sfr(struct mhi_controller *mhi_cntrl)
 {
 }
+#endif //CONFIG_WCN_GOOGLE
 
 /**
  * mhi_device_configure - Allow devices with offload channels to setup their own
diff --git a/mhi/core/misc.c b/mhi/core/misc.c
index 9c163eb..b002d57 100644
--- a/mhi/core/misc.c
+++ b/mhi/core/misc.c
@@ -613,8 +613,13 @@ error_suspend:
 }
 EXPORT_SYMBOL(mhi_pm_fast_suspend);
 
+#if IS_ENABLED(CONFIG_WCN_GOOGLE)
+static void mhi_process_sfr(struct mhi_controller *mhi_cntrl,
+			    struct file_info *info, void (*crash_info_handler)(u8*))
+#else
 static void mhi_process_sfr(struct mhi_controller *mhi_cntrl,
 			    struct file_info *info)
+#endif //CONFIG_WCN_GOOGLE
 {
 	struct mhi_buf *mhi_buf = mhi_cntrl->rddm_image->mhi_buf;
 	struct device *dev = &mhi_cntrl->mhi_dev->dev;
@@ -653,7 +658,11 @@ static void mhi_process_sfr(struct mhi_controller *mhi_cntrl,
 		}
 	}
 	sfr_buf[info->file_size] = '\0';
-
+#if IS_ENABLED(CONFIG_WCN_GOOGLE)
+	if (crash_info_handler) {
+		crash_info_handler(sfr_buf);
+	}
+#endif
 	/* force sfr string to log in kernel msg */
 	MHI_ERR("%s\n", sfr_buf);
 err:
@@ -697,7 +706,11 @@ static int mhi_find_next_file_offset(struct mhi_controller *mhi_cntrl,
 	return 0;
 }
 
+#if IS_ENABLED(CONFIG_WCN_GOOGLE)
+void mhi_dump_sfr(struct mhi_controller *mhi_cntrl, void (*crash_info_handler)(u8*))
+#else
 void mhi_dump_sfr(struct mhi_controller *mhi_cntrl)
+#endif //CONFIG_WCN_GOOGLE
 {
 	struct mhi_buf *mhi_buf = mhi_cntrl->rddm_image->mhi_buf;
 	struct rddm_header *rddm_header =
@@ -729,7 +742,11 @@ void mhi_dump_sfr(struct mhi_controller *mhi_cntrl)
 
 		if (!strcmp(table_info->file_name, "Q6-SFR.bin")) {
 			info.file_size = table_info->size;
+#if IS_ENABLED(CONFIG_WCN_GOOGLE)
+			mhi_process_sfr(mhi_cntrl, &info, crash_info_handler);
+#else
 			mhi_process_sfr(mhi_cntrl, &info);
+#endif //CONFIG_WCN_GOOGLE
 			return;
 		}