disp: msm: sde: add sde data to va minidumps

VA minidumps supports to add any allocated variable or data to
minidumps. Add panic notifier and wrapper function to add
sde data to minidump va. Add event log, register log, register dumps,
debug bus and different sde variables and states info to minidump.

Change-Id: If54da0b7067df17877e4da645d82f1705baa3f6d
Signed-off-by: Andhavarapu Karthik <kartkart@codeaurora.org>

msm/sde_dbg.c

@@ -18,6 +18,7 @@
 
 #include "sde_dbg.h"
 #include "sde/sde_hw_catalog.h"
+#include "sde/sde_kms.h"
 
 #define SDE_DBG_BASE_MAX		10
 
@@ -577,6 +578,95 @@ static u32 _sde_dbg_get_reg_dump_size(void)
 	return size;
 }
 
+#if IS_ENABLED(CONFIG_QCOM_VA_MINIDUMP)
+static void sde_dbg_add_dbg_buses_to_minidump_va(void)
+{
+	static struct sde_dbg_base *dbg = &sde_dbg_base;
+
+	sde_mini_dump_add_va_region("sde_dbgbus", dbg->dbgbus_sde.cmn.content_size*sizeof(u32),
+			dbg->dbgbus_sde.cmn.dumped_content);
+
+	sde_mini_dump_add_va_region("vbif_dbgbus", dbg->dbgbus_vbif_rt.cmn.content_size*sizeof(u32),
+			dbg->dbgbus_vbif_rt.cmn.dumped_content);
+
+	sde_mini_dump_add_va_region("dsi_dbgbus", dbg->dbgbus_dsi.cmn.content_size*sizeof(u32),
+			dbg->dbgbus_dsi.cmn.dumped_content);
+
+	sde_mini_dump_add_va_region("lutdma_dbgbus",
+			dbg->dbgbus_lutdma.cmn.content_size*sizeof(u32),
+			dbg->dbgbus_lutdma.cmn.dumped_content);
+
+	sde_mini_dump_add_va_region("rsc_dbgbus", dbg->dbgbus_rsc.cmn.content_size*sizeof(u32),
+			dbg->dbgbus_rsc.cmn.dumped_content);
+
+	sde_mini_dump_add_va_region("dp_dbgbus", dbg->dbgbus_dp.cmn.content_size*sizeof(u32),
+			dbg->dbgbus_dp.cmn.dumped_content);
+}
+
+static int sde_md_notify_handler(struct notifier_block *this,
+				unsigned long event, void *ptr)
+{
+	struct device *dev = sde_dbg_base.dev;
+	struct platform_device *pdev = to_platform_device(dev);
+	struct drm_device *ddev = platform_get_drvdata(pdev);
+	struct msm_drm_private *priv = ddev->dev_private;
+	struct sde_kms *sde_kms = to_sde_kms(priv->kms);
+	struct sde_dbg_base *dbg_base = &sde_dbg_base;
+	u32 reg_dump_size = _sde_dbg_get_reg_dump_size();
+
+	sde_mini_dump_add_va_region("msm_drm_priv", sizeof(*priv), priv);
+	sde_mini_dump_add_va_region("sde_evtlog",
+			sizeof(*sde_dbg_base_evtlog), sde_dbg_base_evtlog);
+	sde_mini_dump_add_va_region("sde_reglog",
+			sizeof(*sde_dbg_base_reglog), sde_dbg_base_reglog);
+
+	sde_mini_dump_add_va_region("sde_reg_dump", reg_dump_size, dbg_base->reg_dump_base);
+
+	sde_dbg_add_dbg_buses_to_minidump_va();
+	sde_kms_add_data_to_minidump_va(sde_kms);
+
+	return 0;
+}
+
+static struct notifier_block sde_md_notify_blk = {
+	.notifier_call = sde_md_notify_handler,
+	.priority = INT_MAX,
+};
+
+static int sde_register_md_panic_notifer()
+{
+	qcom_va_md_register("display", &sde_md_notify_blk);
+	return 0;
+}
+
+void sde_mini_dump_add_va_region(const char *name, u32 size, void *virt_addr)
+{
+	struct va_md_entry md_entry;
+	int ret;
+
+	strlcpy(md_entry.owner, name, sizeof(md_entry.owner));
+	md_entry.vaddr = (uintptr_t)virt_addr;
+	md_entry.size = size;
+
+	ret = qcom_va_md_add_region(&md_entry);
+	if (ret < 0)
+		SDE_ERROR("va minudmp add entry failed for %s, returned %d\n",
+			name, ret);
+
+	return;
+}
+#else
+static int sde_register_md_panic_notifer()
+{
+	return 0;
+}
+
+void sde_mini_dump_add_va_region(const char *name, u32 size, void *virt_addr)
+{
+	return;
+}
+#endif
+
 static int _sde_dump_reg_range_cmp(void *priv, struct list_head *a,
 		struct list_head *b)
 {
@@ -2309,6 +2399,7 @@ int sde_dbg_init(struct device *dev)
 	sde_dbg_base.enable_dbgbus_dump = SDE_DBG_DEFAULT_DUMP_MODE;
 	sde_dbg_base.dump_blk_mask = SDE_DBG_BUILT_IN_ALL;
 	memset(&sde_dbg_base.regbuf, 0, sizeof(sde_dbg_base.regbuf));
+	sde_register_md_panic_notifer();
 
 	pr_info("evtlog_status: enable:%d, panic:%d, dump:%d\n",
 		sde_dbg_base.evtlog->enable, sde_dbg_base.panic_on_err,