[PATCH 6/7] drm/i915: Add csr programming registers to dmc debugfs entry

Mika Kuoppala
2015-10-30T15:55:14Z

We check these to determine firmware loading status. Include
them to help to debug causes of firmware loading fails.

v2: Move all CSR specific registers to i915_reg.h (Ville)
v3: Rebase
v4: Rebase (RPM ref)

Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 11 ++++++++---
drivers/gpu/drm/i915/i915_reg.h | 10 ++++++++++
drivers/gpu/drm/i915/intel_csr.c | 13 -------------
3 files changed, 18 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 2c33770..f6468be 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2801,17 +2801,17 @@ static int i915_dmc_info(struct seq_file *m, void *unused)

csr = &dev_priv->csr;

+ intel_runtime_pm_get(dev_priv);
+
seq_printf(m, "fw loaded: %s\n", yesno(csr->dmc_payload != NULL));
seq_printf(m, "path: %s\n", csr->fw_path);

if (!csr->dmc_payload)
- return 0;
+ goto out;

seq_printf(m, "version: %d.%d\n", CSR_VERSION_MAJOR(csr->version),
CSR_VERSION_MINOR(csr->version));

- intel_runtime_pm_get(dev_priv);
-
if (IS_SKYLAKE(dev) && csr->version >= CSR_VERSION(1, 6)) {
seq_printf(m, "DC3 -> DC5 count: %d\n",
I915_READ(SKL_CSR_DC3_DC5_COUNT));
@@ -2822,6 +2822,11 @@ static int i915_dmc_info(struct seq_file *m, void *unused)
I915_READ(BXT_CSR_DC3_DC5_COUNT));
}

+out:
+ seq_printf(m, "program base: 0x%08x\n", I915_READ(CSR_PROGRAM(0)));
+ seq_printf(m, "ssp base: 0x%08x\n", I915_READ(CSR_SSP_BASE));
+ seq_printf(m, "htp: 0x%08x\n", I915_READ(CSR_HTP_SKL));
+
intel_runtime_pm_put(dev_priv);

return 0;
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index c563ead..72bbed2 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -5697,6 +5697,16 @@ enum skl_disp_power_wells {
#define GAMMA_MODE_MODE_SPLIT (3 << 0)

/* DMC/CSR */
+#define CSR_PROGRAM(i) (0x80000 + (i) * 4)
+#define CSR_SSP_BASE_ADDR_GEN9 0x00002FC0
+#define CSR_HTP_ADDR_SKL 0x00500034
+#define CSR_SSP_BASE 0x8F074
+#define CSR_HTP_SKL 0x8F004
+#define CSR_LAST_WRITE 0x8F034
+#define CSR_LAST_WRITE_VALUE 0xc003b400
+/* MMIO address range for CSR program (0x80000 - 0x82FFF) */
+#define CSR_MMIO_START_RANGE 0x80000
+#define CSR_MMIO_END_RANGE 0x8FFFF
#define SKL_CSR_DC3_DC5_COUNT 0x80030
#define SKL_CSR_DC5_DC6_COUNT 0x8002C
#define BXT_CSR_DC3_DC5_COUNT 0x80038
diff --git a/drivers/gpu/drm/i915/intel_csr.c b/drivers/gpu/drm/i915/intel_csr.c
index 25b6ba7..7dc5390 100644
--- a/drivers/gpu/drm/i915/intel_csr.c
+++ b/drivers/gpu/drm/i915/intel_csr.c
@@ -49,21 +49,8 @@ MODULE_FIRMWARE(I915_CSR_BXT);

#define SKL_CSR_VERSION_REQUIRED CSR_VERSION(1, 23)

-/*
-* SKL CSR registers for DC5 and DC6
-*/
-#define CSR_PROGRAM(i) (0x80000 + (i) * 4)
-#define CSR_SSP_BASE_ADDR_GEN9 0x00002FC0
-#define CSR_HTP_ADDR_SKL 0x00500034
-#define CSR_SSP_BASE 0x8F074
-#define CSR_HTP_SKL 0x8F004
-#define CSR_LAST_WRITE 0x8F034
-#define CSR_LAST_WRITE_VALUE 0xc003b400
-/* MMIO address range for CSR program (0x80000 - 0x82FFF) */
#define CSR_MAX_FW_SIZE 0x2FFF
#define CSR_DEFAULT_FW_OFFSET 0xFFFFFFFF
-#define CSR_MMIO_START_RANGE 0x80000
-#define CSR_MMIO_END_RANGE 0x8FFFF

struct intel_css_header {
/* 0x09 for DMC */