Start preparing for dynamically allocated struct intel_dmc by adding
i915_to_dmc() and dmc->i915, and using them. Take the future NULL dmc
pointer into account already now, and add separate logging for
initialization in the DMC debugfs.
v2:
- Don't reduce debugfs output (Imre)
Cc: Imre Deak <imre.deak@xxxxxxxxx>
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_dmc.c | 94 ++++++++++++++----------
drivers/gpu/drm/i915/display/intel_dmc.h | 1 +
2 files changed, 56 insertions(+), 39 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dmc.c b/drivers/gpu/drm/i915/display/intel_dmc.c
index 599fb92a5161..0b54b9b96249 100644
--- a/drivers/gpu/drm/i915/display/intel_dmc.c
+++ b/drivers/gpu/drm/i915/display/intel_dmc.c
@@ -38,6 +38,11 @@
* low-power state and comes back to normal.
*/
+static struct intel_dmc *i915_to_dmc(struct drm_i915_private *i915)
+{
+ return &i915->display.dmc;
+}
+
#define DMC_VERSION(major, minor) ((major) << 16 | (minor))
#define DMC_VERSION_MAJOR(version) ((version) >> 16)
#define DMC_VERSION_MINOR(version) ((version) & 0xffff)
@@ -259,7 +264,9 @@ static bool is_valid_dmc_id(enum intel_dmc_id dmc_id)
static bool has_dmc_id_fw(struct drm_i915_private *i915, enum intel_dmc_id dmc_id)
{
- return i915->display.dmc.dmc_info[dmc_id].payload;
+ struct intel_dmc *dmc = i915_to_dmc(i915);
+
+ return dmc && dmc->dmc_info[dmc_id].payload;
}
bool intel_dmc_has_payload(struct drm_i915_private *i915)
@@ -450,7 +457,7 @@ void intel_dmc_disable_pipe(struct drm_i915_private *i915, enum pipe pipe)
void intel_dmc_load_program(struct drm_i915_private *dev_priv)
{
struct i915_power_domains *power_domains = &dev_priv->display.power.domains;
- struct intel_dmc *dmc = &dev_priv->display.dmc;
+ struct intel_dmc *dmc = i915_to_dmc(dev_priv);
enum intel_dmc_id dmc_id;
u32 i;
@@ -515,8 +522,11 @@ void intel_dmc_disable_program(struct drm_i915_private *i915)
void assert_dmc_loaded(struct drm_i915_private *i915)
{
- drm_WARN_ONCE(&i915->drm,
- !intel_de_read(i915, DMC_PROGRAM(i915->display.dmc.dmc_info[DMC_FW_MAIN].start_mmioaddr, 0)),
+ struct intel_dmc *dmc = i915_to_dmc(i915);
+
+ drm_WARN_ONCE(&i915->drm, !dmc, "DMC not initialized\n");
+ drm_WARN_ONCE(&i915->drm, dmc &&
+ !intel_de_read(i915, DMC_PROGRAM(dmc->dmc_info[DMC_FW_MAIN].start_mmioaddr, 0)),
"DMC program storage start is NULL\n");
drm_WARN_ONCE(&i915->drm, !intel_de_read(i915, DMC_SSP_BASE),
"DMC SSP Base Not fine\n");
@@ -551,11 +561,10 @@ static void dmc_set_fw_offset(struct intel_dmc *dmc,
const struct stepping_info *si,
u8 package_ver)
{
+ struct drm_i915_private *i915 = dmc->i915;
enum intel_dmc_id dmc_id;
unsigned int i;
- struct drm_i915_private *i915 = container_of(dmc, typeof(*i915), display.dmc);
-
for (i = 0; i < num_entries; i++) {
dmc_id = package_ver <= 1 ? DMC_FW_MAIN : fw_info[i].dmc_id;
@@ -582,7 +591,7 @@ static bool dmc_mmio_addr_sanity_check(struct intel_dmc *dmc,
const u32 *mmioaddr, u32 mmio_count,
int header_ver, enum intel_dmc_id dmc_id)
{
- struct drm_i915_private *i915 = container_of(dmc, typeof(*i915), display.dmc);
+ struct drm_i915_private *i915 = dmc->i915;
u32 start_range, end_range;
int i;
@@ -615,7 +624,7 @@ static u32 parse_dmc_fw_header(struct intel_dmc *dmc,
const struct intel_dmc_header_base *dmc_header,
size_t rem_size, enum intel_dmc_id dmc_id)
{
- struct drm_i915_private *i915 = container_of(dmc, typeof(*i915), display.dmc);
+ struct drm_i915_private *i915 = dmc->i915;
struct dmc_fw_info *dmc_info = &dmc->dmc_info[dmc_id];
unsigned int header_len_bytes, dmc_header_size, payload_size, i;
const u32 *mmioaddr, *mmiodata;
@@ -726,7 +735,7 @@ parse_dmc_fw_package(struct intel_dmc *dmc,
const struct stepping_info *si,
size_t rem_size)
{
- struct drm_i915_private *i915 = container_of(dmc, typeof(*i915), display.dmc);
+ struct drm_i915_private *i915 = dmc->i915;
u32 package_size = sizeof(struct intel_package_header);
u32 num_entries, max_entries;
const struct intel_fw_info *fw_info;
@@ -780,7 +789,7 @@ static u32 parse_dmc_fw_css(struct intel_dmc *dmc,
struct intel_css_header *css_header,
size_t rem_size)
{
- struct drm_i915_private *i915 = container_of(dmc, typeof(*i915), display.dmc);
+ struct drm_i915_private *i915 = dmc->i915;
if (rem_size < sizeof(struct intel_css_header)) {
drm_err(&i915->drm, "Truncated DMC firmware, refusing.\n");
@@ -800,13 +809,12 @@ static u32 parse_dmc_fw_css(struct intel_dmc *dmc,
return sizeof(struct intel_css_header);
}
-static void parse_dmc_fw(struct drm_i915_private *dev_priv,
- const struct firmware *fw)
+static void parse_dmc_fw(struct intel_dmc *dmc, const struct firmware *fw)
{
+ struct drm_i915_private *dev_priv = dmc->i915;
struct intel_css_header *css_header;
struct intel_package_header *package_header;
struct intel_dmc_header_base *dmc_header;
- struct intel_dmc *dmc = &dev_priv->display.dmc;
struct stepping_info display_info = { '*', '*'};
const struct stepping_info *si = intel_get_stepping_info(dev_priv, &display_info);
enum intel_dmc_id dmc_id;
@@ -833,7 +841,7 @@ static void parse_dmc_fw(struct drm_i915_private *dev_priv,
readcount += r;
for_each_dmc_id(dmc_id) {
- if (!dev_priv->display.dmc.dmc_info[dmc_id].present)
+ if (!dmc->dmc_info[dmc_id].present)
continue;
offset = readcount + dmc->dmc_info[dmc_id].dmc_offset * 4;
@@ -872,16 +880,13 @@ static const char *dmc_fallback_path(struct drm_i915_private *i915)
static void dmc_load_work_fn(struct work_struct *work)
{
- struct drm_i915_private *dev_priv;
- struct intel_dmc *dmc;
+ struct intel_dmc *dmc = container_of(work, typeof(*dmc), work);
+ struct drm_i915_private *dev_priv = dmc->i915;
const struct firmware *fw = NULL;
const char *fallback_path;
int err;
- dev_priv = container_of(work, typeof(*dev_priv), display.dmc.work);
- dmc = &dev_priv->display.dmc;
-
- err = request_firmware(&fw, dev_priv->display.dmc.fw_path, dev_priv->drm.dev);
+ err = request_firmware(&fw, dmc->fw_path, dev_priv->drm.dev);
if (err == -ENOENT && !dev_priv->params.dmc_firmware_path) {
fallback_path = dmc_fallback_path(dev_priv);
@@ -892,11 +897,11 @@ static void dmc_load_work_fn(struct work_struct *work)
fallback_path);
err = request_firmware(&fw, fallback_path, dev_priv->drm.dev);
if (err == 0)
- dev_priv->display.dmc.fw_path = fallback_path;
+ dmc->fw_path = fallback_path;
}
}
- parse_dmc_fw(dev_priv, fw);
+ parse_dmc_fw(dmc, fw);
if (intel_dmc_has_payload(dev_priv)) {
intel_dmc_load_program(dev_priv);
@@ -904,7 +909,7 @@ static void dmc_load_work_fn(struct work_struct *work)
drm_info(&dev_priv->drm,
"Finished loading DMC firmware %s (v%u.%u)\n",
- dev_priv->display.dmc.fw_path, DMC_VERSION_MAJOR(dmc->version),
+ dmc->fw_path, DMC_VERSION_MAJOR(dmc->version),
DMC_VERSION_MINOR(dmc->version));
} else {
drm_notice(&dev_priv->drm,
@@ -927,13 +932,16 @@ static void dmc_load_work_fn(struct work_struct *work)
*/
void intel_dmc_init(struct drm_i915_private *dev_priv)
{
- struct intel_dmc *dmc = &dev_priv->display.dmc;
-
- INIT_WORK(&dev_priv->display.dmc.work, dmc_load_work_fn);
+ struct intel_dmc *dmc;
if (!HAS_DMC(dev_priv))
return;
+ dmc = i915_to_dmc(dev_priv);
+ dmc->i915 = dev_priv;
+
+ INIT_WORK(&dmc->work, dmc_load_work_fn);
+
/*
* Obtain a runtime pm reference, until DMC is loaded, to avoid entering
* runtime-suspend.
@@ -999,7 +1007,7 @@ void intel_dmc_init(struct drm_i915_private *dev_priv)
}
drm_dbg_kms(&dev_priv->drm, "Loading %s\n", dmc->fw_path);
- schedule_work(&dev_priv->display.dmc.work);
+ schedule_work(&dmc->work);
}
/**
@@ -1012,10 +1020,13 @@ void intel_dmc_init(struct drm_i915_private *dev_priv)
*/
void intel_dmc_suspend(struct drm_i915_private *dev_priv)
{
+ struct intel_dmc *dmc = i915_to_dmc(dev_priv);
+
if (!HAS_DMC(dev_priv))
return;
- flush_work(&dev_priv->display.dmc.work);
+ if (dmc)
+ flush_work(&dmc->work);
/* Drop the reference held in case DMC isn't loaded. */
if (!intel_dmc_has_payload(dev_priv))
@@ -1051,6 +1062,7 @@ void intel_dmc_resume(struct drm_i915_private *dev_priv)
*/
void intel_dmc_fini(struct drm_i915_private *dev_priv)
{
+ struct intel_dmc *dmc = i915_to_dmc(dev_priv);
enum intel_dmc_id dmc_id;
if (!HAS_DMC(dev_priv))
@@ -1059,42 +1071,45 @@ void intel_dmc_fini(struct drm_i915_private *dev_priv)
intel_dmc_suspend(dev_priv);
drm_WARN_ON(&dev_priv->drm, dev_priv->display.dmc.wakeref);
- for_each_dmc_id(dmc_id)
- kfree(dev_priv->display.dmc.dmc_info[dmc_id].payload);
+ if (dmc) {
+ for_each_dmc_id(dmc_id)
+ kfree(dmc->dmc_info[dmc_id].payload);
+ }
}
void intel_dmc_print_error_state(struct drm_i915_error_state_buf *m,
struct drm_i915_private *i915)
{
- struct intel_dmc *dmc = &i915->display.dmc;
+ struct intel_dmc *dmc = i915_to_dmc(i915);
if (!HAS_DMC(i915))
return;
+ i915_error_printf(m, "DMC initialized: %s\n", str_yes_no(dmc));
i915_error_printf(m, "DMC loaded: %s\n",
str_yes_no(intel_dmc_has_payload(i915)));
- i915_error_printf(m, "DMC fw version: %d.%d\n",
- DMC_VERSION_MAJOR(dmc->version),
- DMC_VERSION_MINOR(dmc->version));
+ if (dmc)
+ i915_error_printf(m, "DMC fw version: %d.%d\n",
+ DMC_VERSION_MAJOR(dmc->version),
+ DMC_VERSION_MINOR(dmc->version));
}
static int intel_dmc_debugfs_status_show(struct seq_file *m, void *unused)
{
struct drm_i915_private *i915 = m->private;
+ struct intel_dmc *dmc = i915_to_dmc(i915);
intel_wakeref_t wakeref;
- struct intel_dmc *dmc;
i915_reg_t dc5_reg, dc6_reg = INVALID_MMIO_REG;
if (!HAS_DMC(i915))
return -ENODEV;
- dmc = &i915->display.dmc;
-
wakeref = intel_runtime_pm_get(&i915->runtime_pm);
+ seq_printf(m, "DMC initialized: %s\n", str_yes_no(dmc));
seq_printf(m, "fw loaded: %s\n",
str_yes_no(intel_dmc_has_payload(i915)));
- seq_printf(m, "path: %s\n", dmc->fw_path);
+ seq_printf(m, "path: %s\n", dmc ? dmc->fw_path : "N/A");
seq_printf(m, "Pipe A fw needed: %s\n",
str_yes_no(GRAPHICS_VER(i915) >= 12));
seq_printf(m, "Pipe A fw loaded: %s\n",
@@ -1137,9 +1152,10 @@ static int intel_dmc_debugfs_status_show(struct seq_file *m, void *unused)
seq_printf(m, "DC5 -> DC6 count: %d\n",
intel_de_read(i915, dc6_reg));
-out:
seq_printf(m, "program base: 0x%08x\n",
intel_de_read(i915, DMC_PROGRAM(dmc->dmc_info[DMC_FW_MAIN].start_mmioaddr, 0)));
+
+out:
seq_printf(m, "ssp base: 0x%08x\n",
intel_de_read(i915, DMC_SSP_BASE));
seq_printf(m, "htp: 0x%08x\n", intel_de_read(i915, DMC_HTP_SKL));
diff --git a/drivers/gpu/drm/i915/display/intel_dmc.h b/drivers/gpu/drm/i915/display/intel_dmc.h
index 90910cecc2f6..b74635497aa7 100644
--- a/drivers/gpu/drm/i915/display/intel_dmc.h
+++ b/drivers/gpu/drm/i915/display/intel_dmc.h
@@ -25,6 +25,7 @@ enum intel_dmc_id {
};
struct intel_dmc {
+ struct drm_i915_private *i915;
struct work_struct work;
const char *fw_path;
u32 max_fw_size; /* bytes */
--
2.39.1
