X-Git-Url: http://git.osdn.net/view?a=blobdiff_plain;f=drivers%2Fgpu%2Fdrm%2Fi915%2Fintel_pm.c;h=542cf6844dc3a751cbb243a49b4b600310d71367;hb=8dd0eb3566711d81bfbe2b4421b33f0dd723cec4;hp=f7c993843be8abffabcf1682ba3f97a050ac82bd;hpb=d136dfeec84bfe3e4238bacd23f21e161268deac;p=uclinux-h8%2Flinux.git diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index f7c993843be8..542cf6844dc3 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -2522,6 +2522,7 @@ skl_allocate_pipe_ddb(struct drm_crtc *crtc, enum pipe pipe = intel_crtc->pipe; struct skl_ddb_entry *alloc = &ddb->pipe[pipe]; uint16_t alloc_size, start, cursor_blocks; + uint16_t minimum[I915_MAX_PLANES]; unsigned int total_data_rate; int plane; @@ -2540,9 +2541,21 @@ skl_allocate_pipe_ddb(struct drm_crtc *crtc, alloc_size -= cursor_blocks; alloc->end -= cursor_blocks; + /* 1. Allocate the mininum required blocks for each active plane */ + for_each_plane(pipe, plane) { + const struct intel_plane_wm_parameters *p; + + p = ¶ms->plane[plane]; + if (!p->enabled) + continue; + + minimum[plane] = 8; + alloc_size -= minimum[plane]; + } + /* - * Each active plane get a portion of the remaining space, in - * proportion to the amount of data they need to fetch from memory. + * 2. Distribute the remaining space in proportion to the amount of + * data each plane needs to fetch from memory. * * FIXME: we may not allocate every single block here. */ @@ -2564,8 +2577,9 @@ skl_allocate_pipe_ddb(struct drm_crtc *crtc, * promote the expression to 64 bits to avoid overflowing, the * result is < available as data_rate / total_data_rate < 1 */ - plane_blocks = div_u64((uint64_t)alloc_size * data_rate, - total_data_rate); + plane_blocks = minimum[plane]; + plane_blocks += div_u64((uint64_t)alloc_size * data_rate, + total_data_rate); ddb->plane[pipe][plane].start = start; ddb->plane[pipe][plane].end = start + plane_blocks; @@ -2595,7 +2609,7 @@ static uint32_t skl_wm_method1(uint32_t pixel_rate, uint8_t bytes_per_pixel, if (latency == 0) return UINT_MAX; - wm_intermediate_val = latency * pixel_rate * bytes_per_pixel; + wm_intermediate_val = latency * pixel_rate * bytes_per_pixel / 512; ret = DIV_ROUND_UP(wm_intermediate_val, 1000); return ret; @@ -2603,17 +2617,29 @@ static uint32_t skl_wm_method1(uint32_t pixel_rate, uint8_t bytes_per_pixel, static uint32_t skl_wm_method2(uint32_t pixel_rate, uint32_t pipe_htotal, uint32_t horiz_pixels, uint8_t bytes_per_pixel, - uint32_t latency) + uint64_t tiling, uint32_t latency) { - uint32_t ret, plane_bytes_per_line, wm_intermediate_val; + uint32_t ret; + uint32_t plane_bytes_per_line, plane_blocks_per_line; + uint32_t wm_intermediate_val; if (latency == 0) return UINT_MAX; plane_bytes_per_line = horiz_pixels * bytes_per_pixel; + + if (tiling == I915_FORMAT_MOD_Y_TILED || + tiling == I915_FORMAT_MOD_Yf_TILED) { + plane_bytes_per_line *= 4; + plane_blocks_per_line = DIV_ROUND_UP(plane_bytes_per_line, 512); + plane_blocks_per_line /= 4; + } else { + plane_blocks_per_line = DIV_ROUND_UP(plane_bytes_per_line, 512); + } + wm_intermediate_val = latency * pixel_rate; ret = DIV_ROUND_UP(wm_intermediate_val, pipe_htotal * 1000) * - plane_bytes_per_line; + plane_blocks_per_line; return ret; } @@ -2662,6 +2688,7 @@ static void skl_compute_wm_pipe_parameters(struct drm_crtc *crtc, struct intel_crtc *intel_crtc = to_intel_crtc(crtc); enum pipe pipe = intel_crtc->pipe; struct drm_plane *plane; + struct drm_framebuffer *fb; int i = 1; /* Index for sprite planes start */ p->active = intel_crtc_active(crtc); @@ -2677,6 +2704,14 @@ static void skl_compute_wm_pipe_parameters(struct drm_crtc *crtc, crtc->primary->fb->bits_per_pixel / 8; p->plane[0].horiz_pixels = intel_crtc->config->pipe_src_w; p->plane[0].vert_pixels = intel_crtc->config->pipe_src_h; + p->plane[0].tiling = DRM_FORMAT_MOD_NONE; + fb = crtc->primary->state->fb; + /* + * Framebuffer can be NULL on plane disable, but it does not + * matter for watermarks if we assume no tiling in that case. + */ + if (fb) + p->plane[0].tiling = fb->modifier[0]; p->cursor.enabled = true; p->cursor.bytes_per_pixel = 4; @@ -2693,41 +2728,60 @@ static void skl_compute_wm_pipe_parameters(struct drm_crtc *crtc, } } -static bool skl_compute_plane_wm(struct skl_pipe_wm_parameters *p, +static bool skl_compute_plane_wm(const struct drm_i915_private *dev_priv, + struct skl_pipe_wm_parameters *p, struct intel_plane_wm_parameters *p_params, uint16_t ddb_allocation, - uint32_t mem_value, + int level, uint16_t *out_blocks, /* out */ uint8_t *out_lines /* out */) { - uint32_t method1, method2, plane_bytes_per_line, res_blocks, res_lines; - uint32_t result_bytes; + uint32_t latency = dev_priv->wm.skl_latency[level]; + uint32_t method1, method2; + uint32_t plane_bytes_per_line, plane_blocks_per_line; + uint32_t res_blocks, res_lines; + uint32_t selected_result; - if (mem_value == 0 || !p->active || !p_params->enabled) + if (latency == 0 || !p->active || !p_params->enabled) return false; method1 = skl_wm_method1(p->pixel_rate, p_params->bytes_per_pixel, - mem_value); + latency); method2 = skl_wm_method2(p->pixel_rate, p->pipe_htotal, p_params->horiz_pixels, p_params->bytes_per_pixel, - mem_value); + p_params->tiling, + latency); plane_bytes_per_line = p_params->horiz_pixels * p_params->bytes_per_pixel; + plane_blocks_per_line = DIV_ROUND_UP(plane_bytes_per_line, 512); - /* For now xtile and linear */ - if (((ddb_allocation * 512) / plane_bytes_per_line) >= 1) - result_bytes = min(method1, method2); - else - result_bytes = method1; + if (p_params->tiling == I915_FORMAT_MOD_Y_TILED || + p_params->tiling == I915_FORMAT_MOD_Yf_TILED) { + uint32_t y_tile_minimum = plane_blocks_per_line * 4; + selected_result = max(method2, y_tile_minimum); + } else { + if ((ddb_allocation / plane_blocks_per_line) >= 1) + selected_result = min(method1, method2); + else + selected_result = method1; + } - res_blocks = DIV_ROUND_UP(result_bytes, 512) + 1; - res_lines = DIV_ROUND_UP(result_bytes, plane_bytes_per_line); + res_blocks = selected_result + 1; + res_lines = DIV_ROUND_UP(selected_result, plane_blocks_per_line); - if (res_blocks > ddb_allocation || res_lines > 31) + if (level >= 1 && level <= 7) { + if (p_params->tiling == I915_FORMAT_MOD_Y_TILED || + p_params->tiling == I915_FORMAT_MOD_Yf_TILED) + res_lines += 4; + else + res_blocks++; + } + + if (res_blocks >= ddb_allocation || res_lines > 31) return false; *out_blocks = res_blocks; @@ -2744,23 +2798,24 @@ static void skl_compute_wm_level(const struct drm_i915_private *dev_priv, int num_planes, struct skl_wm_level *result) { - uint16_t latency = dev_priv->wm.skl_latency[level]; uint16_t ddb_blocks; int i; for (i = 0; i < num_planes; i++) { ddb_blocks = skl_ddb_entry_size(&ddb->plane[pipe][i]); - result->plane_en[i] = skl_compute_plane_wm(p, &p->plane[i], + result->plane_en[i] = skl_compute_plane_wm(dev_priv, + p, &p->plane[i], ddb_blocks, - latency, + level, &result->plane_res_b[i], &result->plane_res_l[i]); } ddb_blocks = skl_ddb_entry_size(&ddb->cursor[pipe]); - result->cursor_en = skl_compute_plane_wm(p, &p->cursor, ddb_blocks, - latency, &result->cursor_res_b, + result->cursor_en = skl_compute_plane_wm(dev_priv, p, &p->cursor, + ddb_blocks, level, + &result->cursor_res_b, &result->cursor_res_l); } @@ -3153,12 +3208,20 @@ skl_update_sprite_wm(struct drm_plane *plane, struct drm_crtc *crtc, int pixel_size, bool enabled, bool scaled) { struct intel_plane *intel_plane = to_intel_plane(plane); + struct drm_framebuffer *fb = plane->state->fb; intel_plane->wm.enabled = enabled; intel_plane->wm.scaled = scaled; intel_plane->wm.horiz_pixels = sprite_width; intel_plane->wm.vert_pixels = sprite_height; intel_plane->wm.bytes_per_pixel = pixel_size; + intel_plane->wm.tiling = DRM_FORMAT_MOD_NONE; + /* + * Framebuffer can be NULL on plane disable, but it does not + * matter for watermarks if we assume no tiling in that case. + */ + if (fb) + intel_plane->wm.tiling = fb->modifier[0]; skl_update_wm(crtc); }