From: Anusha Srivatsa Date: Mon, 21 Jun 2021 19:14:13 +0000 (-0700) Subject: drm/i915/xelpd: Pipe A DMC plugging X-Git-Tag: v5.15.73~11134^2~29^2~52 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3d5928a168a9546b23c6b3439c6158d7a028326c;p=platform%2Fkernel%2Flinux-rpi.git drm/i915/xelpd: Pipe A DMC plugging This patch adds Pipe A plumbing to the already existing parsing and loading functions which is taken care of in the prep patches. Adding MAX_DMC_FW to keep track for both Main and Pipe A DMC while loading the respective blobs. Also adding present field in dmc_info. s/find_dmc_fw_offset/csr_set_dmc_fw_offset. While at it add fw_info_matches_stepping() helper. CSR_PROGRAM() should now take the starting address of the particular blob (Main or Pipe) and not hardcode it. v2: Add dmc_offset and start_mmioaddr fields for dmc_info struct. v3: Add a missing corner cases of stepping-substepping combination in fw_info_matches_stepping() helper. v4: Add macro for start_mmioaddr for V1 package. Simplify code in dmc_set_fw_offset (Lucas) Cc: Souza, Jose Cc: Lucas De Marchi Signed-off-by: Anusha Srivatsa Reviewed-by: Lucas De Marchi Link: https://patchwork.freedesktop.org/patch/msgid/20210621191415.29823-3-anusha.srivatsa@intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c index 88bb05d5c483..2a1c39a0e56e 100644 --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c @@ -544,6 +544,8 @@ static int i915_dmc_info(struct seq_file *m, void *unused) seq_printf(m, "fw loaded: %s\n", yesno(intel_dmc_has_payload(dev_priv))); seq_printf(m, "path: %s\n", dmc->fw_path); + seq_printf(m, "Pipe A fw support: %s\n", yesno(INTEL_GEN(dev_priv) >= 12)); + seq_printf(m, "Pipe A fw loaded: %s\n", yesno(dmc->dmc_info[DMC_FW_PIPEA].payload)); if (!intel_dmc_has_payload(dev_priv)) goto out; @@ -582,7 +584,7 @@ static int i915_dmc_info(struct seq_file *m, void *unused) out: seq_printf(m, "program base: 0x%08x\n", - intel_de_read(dev_priv, DMC_PROGRAM(0))); + intel_de_read(dev_priv, DMC_PROGRAM(dmc->dmc_info[DMC_FW_MAIN].start_mmioaddr, 0))); seq_printf(m, "ssp base: 0x%08x\n", intel_de_read(dev_priv, DMC_SSP_BASE)); seq_printf(m, "htp: 0x%08x\n", intel_de_read(dev_priv, DMC_HTP_SKL)); diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c index 4298ae684d7d..285380079aab 100644 --- a/drivers/gpu/drm/i915/display/intel_display_power.c +++ b/drivers/gpu/drm/i915/display/intel_display_power.c @@ -961,8 +961,9 @@ static void bxt_disable_dc9(struct drm_i915_private *dev_priv) static void assert_dmc_loaded(struct drm_i915_private *dev_priv) { drm_WARN_ONCE(&dev_priv->drm, - !intel_de_read(dev_priv, DMC_PROGRAM(0)), - "DMC program storage start is NULL\n"); + !intel_de_read(dev_priv, + DMC_PROGRAM(dev_priv->dmc.dmc_info[DMC_FW_MAIN].start_mmioaddr, 0)), + "DMC program storage start is NULL\n"); drm_WARN_ONCE(&dev_priv->drm, !intel_de_read(dev_priv, DMC_SSP_BASE), "DMC SSP Base Not fine\n"); drm_WARN_ONCE(&dev_priv->drm, !intel_de_read(dev_priv, DMC_HTP_SKL), diff --git a/drivers/gpu/drm/i915/display/intel_dmc.c b/drivers/gpu/drm/i915/display/intel_dmc.c index 269a57d936ab..18e0d225a478 100644 --- a/drivers/gpu/drm/i915/display/intel_dmc.c +++ b/drivers/gpu/drm/i915/display/intel_dmc.c @@ -96,6 +96,7 @@ MODULE_FIRMWARE(BXT_DMC_PATH); #define PACKAGE_V2_MAX_FW_INFO_ENTRIES 32 #define DMC_V1_MAX_MMIO_COUNT 8 #define DMC_V3_MAX_MMIO_COUNT 20 +#define DMC_V1_MMIO_START_RANGE 0x80000 struct intel_css_header { /* 0x09 for DMC */ @@ -317,8 +318,7 @@ static void gen9_set_dc_state_debugmask(struct drm_i915_private *dev_priv) void intel_dmc_load_program(struct drm_i915_private *dev_priv) { struct intel_dmc *dmc = &dev_priv->dmc; - struct dmc_fw_info *dmc_info = &dmc->dmc_info[DMC_FW_MAIN]; - u32 i, fw_size; + u32 id, i; if (!HAS_DMC(dev_priv)) { drm_err(&dev_priv->drm, @@ -332,20 +332,25 @@ void intel_dmc_load_program(struct drm_i915_private *dev_priv) return; } - fw_size = dmc_info->dmc_fw_size; assert_rpm_wakelock_held(&dev_priv->runtime_pm); preempt_disable(); - for (i = 0; i < fw_size; i++) - intel_uncore_write_fw(&dev_priv->uncore, DMC_PROGRAM(i), - dmc_info->payload[i]); + for (id = 0; id < DMC_FW_MAX; id++) { + for (i = 0; i < dmc->dmc_info[id].dmc_fw_size; i++) { + intel_uncore_write_fw(&dev_priv->uncore, + DMC_PROGRAM(dmc->dmc_info[id].start_mmioaddr, i), + dmc->dmc_info[id].payload[i]); + } + } preempt_enable(); - for (i = 0; i < dmc_info->mmio_count; i++) { - intel_de_write(dev_priv, dmc_info->mmioaddr[i], - dmc_info->mmiodata[i]); + for (id = 0; id < DMC_FW_MAX; id++) { + for (i = 0; i < dmc->dmc_info[id].mmio_count; i++) { + intel_de_write(dev_priv, dmc->dmc_info[id].mmioaddr[i], + dmc->dmc_info[id].mmiodata[i]); + } } dev_priv->dmc.dc_state = 0; @@ -353,59 +358,68 @@ void intel_dmc_load_program(struct drm_i915_private *dev_priv) gen9_set_dc_state_debugmask(dev_priv); } +static bool fw_info_matches_stepping(const struct intel_fw_info *fw_info, + const struct stepping_info *si) +{ + if ((fw_info->substepping == '*' && si->stepping == fw_info->stepping) || + (si->stepping == fw_info->stepping && si->substepping == fw_info->substepping) || + /* + * If we don't find a more specific one from above two checks, we + * then check for the generic one to be sure to work even with + * "broken firmware" + */ + (si->stepping == '*' && si->substepping == fw_info->substepping) || + (fw_info->stepping == '*' && fw_info->substepping == '*')) + return true; + + return false; +} + /* * Search fw_info table for dmc_offset to find firmware binary: num_entries is * already sanitized. */ -static u32 find_dmc_fw_offset(const struct intel_fw_info *fw_info, +static void dmc_set_fw_offset(struct intel_dmc *dmc, + const struct intel_fw_info *fw_info, unsigned int num_entries, const struct stepping_info *si, u8 package_ver) { - u32 dmc_offset = DMC_DEFAULT_FW_OFFSET; - unsigned int i; + unsigned int i, id; + + struct drm_i915_private *i915 = container_of(dmc, typeof(*i915), dmc); for (i = 0; i < num_entries; i++) { - if (package_ver > 1 && fw_info[i].dmc_id != 0) - continue; + id = package_ver <= 1 ? DMC_FW_MAIN : fw_info[i].dmc_id; - if (fw_info[i].substepping == '*' && - si->stepping == fw_info[i].stepping) { - dmc_offset = fw_info[i].offset; - break; + if (id >= DMC_FW_MAX) { + drm_dbg(&i915->drm, "Unsupported firmware id: %u\n", id); + continue; } - if (si->stepping == fw_info[i].stepping && - si->substepping == fw_info[i].substepping) { - dmc_offset = fw_info[i].offset; - break; - } + /* More specific versions come first, so we don't even have to + * check for the stepping since we already found a previous FW + * for this id. + */ + if (dmc->dmc_info[id].present) + continue; - if (fw_info[i].stepping == '*' && - fw_info[i].substepping == '*') { - /* - * In theory we should stop the search as generic - * entries should always come after the more specific - * ones, but let's continue to make sure to work even - * with "broken" firmwares. If we don't find a more - * specific one, then we use this entry - */ - dmc_offset = fw_info[i].offset; + if (fw_info_matches_stepping(&fw_info[i], si)) { + dmc->dmc_info[id].present = true; + dmc->dmc_info[id].dmc_offset = fw_info[i].offset; } } - - return dmc_offset; } static u32 parse_dmc_fw_header(struct intel_dmc *dmc, const struct intel_dmc_header_base *dmc_header, - size_t rem_size) + size_t rem_size, u8 dmc_id) { struct drm_i915_private *i915 = container_of(dmc, typeof(*i915), dmc); - struct dmc_fw_info *dmc_info = &dmc->dmc_info[DMC_FW_MAIN]; + 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; - u32 mmio_count, mmio_count_max; + u32 mmio_count, mmio_count_max, start_mmioaddr; u8 *payload; BUILD_BUG_ON(ARRAY_SIZE(dmc_info->mmioaddr) < DMC_V3_MAX_MMIO_COUNT || @@ -432,6 +446,7 @@ static u32 parse_dmc_fw_header(struct intel_dmc *dmc, mmio_count_max = DMC_V3_MAX_MMIO_COUNT; /* header_len is in dwords */ header_len_bytes = dmc_header->header_len * 4; + start_mmioaddr = v3->start_mmioaddr; dmc_header_size = sizeof(*v3); } else if (dmc_header->header_ver == 1) { const struct intel_dmc_header_v1 *v1 = @@ -445,6 +460,7 @@ static u32 parse_dmc_fw_header(struct intel_dmc *dmc, mmio_count = v1->mmio_count; mmio_count_max = DMC_V1_MAX_MMIO_COUNT; header_len_bytes = dmc_header->header_len; + start_mmioaddr = DMC_V1_MMIO_START_RANGE; dmc_header_size = sizeof(*v1); } else { drm_err(&i915->drm, "Unknown DMC fw header version: %u\n", @@ -465,16 +481,11 @@ static u32 parse_dmc_fw_header(struct intel_dmc *dmc, } for (i = 0; i < mmio_count; i++) { - if (mmioaddr[i] < DMC_MMIO_START_RANGE || - mmioaddr[i] > DMC_MMIO_END_RANGE) { - drm_err(&i915->drm, "DMC firmware has wrong mmio address 0x%x\n", - mmioaddr[i]); - return 0; - } dmc_info->mmioaddr[i] = _MMIO(mmioaddr[i]); dmc_info->mmiodata[i] = mmiodata[i]; } dmc_info->mmio_count = mmio_count; + dmc_info->start_mmioaddr = start_mmioaddr; rem_size -= header_len_bytes; @@ -511,7 +522,7 @@ parse_dmc_fw_package(struct intel_dmc *dmc, { struct drm_i915_private *i915 = container_of(dmc, typeof(*i915), dmc); u32 package_size = sizeof(struct intel_package_header); - u32 num_entries, max_entries, dmc_offset; + u32 num_entries, max_entries; const struct intel_fw_info *fw_info; if (rem_size < package_size) @@ -547,16 +558,11 @@ parse_dmc_fw_package(struct intel_dmc *dmc, fw_info = (const struct intel_fw_info *) ((u8 *)package_header + sizeof(*package_header)); - dmc_offset = find_dmc_fw_offset(fw_info, num_entries, si, - package_header->header_ver); - if (dmc_offset == DMC_DEFAULT_FW_OFFSET) { - drm_err(&i915->drm, "DMC firmware not supported for %c stepping\n", - si->stepping); - return 0; - } + dmc_set_fw_offset(dmc, fw_info, num_entries, si, + package_header->header_ver); /* dmc_offset is in dwords */ - return package_size + dmc_offset * 4; + return package_size; error_truncated: drm_err(&i915->drm, "Truncated DMC firmware, refusing.\n"); @@ -608,7 +614,8 @@ static void parse_dmc_fw(struct drm_i915_private *dev_priv, struct intel_dmc *dmc = &dev_priv->dmc; const struct stepping_info *si = intel_get_stepping_info(dev_priv); u32 readcount = 0; - u32 r; + u32 r, offset; + int id; if (!fw) return; @@ -629,9 +636,19 @@ static void parse_dmc_fw(struct drm_i915_private *dev_priv, readcount += r; - /* Extract dmc_header information */ - dmc_header = (struct intel_dmc_header_base *)&fw->data[readcount]; - parse_dmc_fw_header(dmc, dmc_header, fw->size - readcount); + for (id = 0; id < DMC_FW_MAX; id++) { + if (!dev_priv->dmc.dmc_info[id].present) + continue; + + offset = readcount + dmc->dmc_info[id].dmc_offset * 4; + if (fw->size - offset < 0) { + drm_err(&dev_priv->drm, "Reading beyond the fw_size\n"); + continue; + } + + dmc_header = (struct intel_dmc_header_base *)&fw->data[offset]; + parse_dmc_fw_header(dmc, dmc_header, fw->size - offset, id); + } } static void intel_dmc_runtime_pm_get(struct drm_i915_private *dev_priv) diff --git a/drivers/gpu/drm/i915/display/intel_dmc.h b/drivers/gpu/drm/i915/display/intel_dmc.h index b872f3a4fd03..007a284b0ef0 100644 --- a/drivers/gpu/drm/i915/display/intel_dmc.h +++ b/drivers/gpu/drm/i915/display/intel_dmc.h @@ -18,6 +18,7 @@ struct drm_i915_private; enum { DMC_FW_MAIN = 0, + DMC_FW_PIPEA, DMC_FW_MAX }; @@ -31,8 +32,11 @@ struct intel_dmc { u32 mmio_count; i915_reg_t mmioaddr[20]; u32 mmiodata[20]; + u32 dmc_offset; + u32 start_mmioaddr; u32 dmc_fw_size; /*dwords */ u32 *payload; + bool present; } dmc_info[DMC_FW_MAX]; u32 dc_state; diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index ecbd9bc33414..61fdd61b33b3 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -7739,7 +7739,7 @@ enum { #define GAMMA_MODE_MODE_12BIT_MULTI_SEGMENTED (3 << 0) /* icl + */ /* DMC */ -#define DMC_PROGRAM(i) _MMIO(0x80000 + (i) * 4) +#define DMC_PROGRAM(addr, i) _MMIO((addr) + (i) * 4) #define DMC_SSP_BASE_ADDR_GEN9 0x00002FC0 #define DMC_HTP_ADDR_SKL 0x00500034 #define DMC_SSP_BASE _MMIO(0x8F074)