From patchwork Wed Feb 6 11:10:25 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 2103631 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by patchwork1.kernel.org (Postfix) with ESMTP id 1C3D83FCFC for ; Wed, 6 Feb 2013 11:14:18 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 07769E677D for ; Wed, 6 Feb 2013 03:14:18 -0800 (PST) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from fireflyinternet.com (smtp.fireflyinternet.com [109.228.6.236]) by gabe.freedesktop.org (Postfix) with ESMTP id 46E61E6773 for ; Wed, 6 Feb 2013 03:12:09 -0800 (PST) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.73.22; Received: from arrandale.alporthouse.com (unverified [78.156.73.22]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP id 128713276-1500050 for multiple; Wed, 06 Feb 2013 11:11:57 +0000 From: Chris Wilson To: intel-gfx@lists.freedesktop.org Date: Wed, 6 Feb 2013 11:10:25 +0000 Message-Id: <1360149028-13531-5-git-send-email-chris@chris-wilson.co.uk> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1360149028-13531-1-git-send-email-chris@chris-wilson.co.uk> References: <1360149028-13531-1-git-send-email-chris@chris-wilson.co.uk> X-Originating-IP: 78.156.73.22 Subject: [Intel-gfx] [PATCH 5/8] drm/i915: Wrap the preallocated BIOS framebuffer and preserve for KMS fbcon X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org Signed-off-by: Chris Wilson Signed-off-by: Jesse Barnes --- drivers/gpu/drm/i915/i915_dma.c | 8 +- drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/intel_display.c | 14 +- drivers/gpu/drm/i915/intel_drv.h | 4 + drivers/gpu/drm/i915/intel_fb.c | 305 +++++++++++++++++++++++++++++++--- 5 files changed, 306 insertions(+), 27 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 4fa6beb..f2b7db7 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1273,6 +1273,7 @@ static const struct vga_switcheroo_client_ops i915_switcheroo_ops = { static int i915_load_modeset_init(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; + bool was_vga_enabled; int ret; ret = intel_parse_bios(dev); @@ -1309,7 +1310,11 @@ static int i915_load_modeset_init(struct drm_device *dev) /* Important: The output setup functions called by modeset_init need * working irqs for e.g. gmbus and dp aux transfers. */ - intel_modeset_init(dev); + intel_modeset_init(dev, &was_vga_enabled); + + /* Wrap existing BIOS mode configuration prior to GEM takeover */ + if (!was_vga_enabled) + intel_fbdev_init_bios(dev); ret = i915_gem_init(dev); if (ret) @@ -1323,6 +1328,7 @@ static int i915_load_modeset_init(struct drm_device *dev) /* FIXME: do pre/post-mode set stuff in core KMS code */ dev->vblank_disable_allowed = 1; + /* Install a default KMS/GEM fbcon if we failed to wrap the BIOS fb */ ret = intel_fbdev_init(dev); if (ret) goto cleanup_gem; diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index fd8a495..6f4afbf 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1814,7 +1814,7 @@ static inline void intel_unregister_dsm_handler(void) { return; } /* modesetting */ extern void intel_modeset_init_hw(struct drm_device *dev); -extern void intel_modeset_init(struct drm_device *dev); +extern void intel_modeset_init(struct drm_device *dev, bool *was_vga_enabled); extern void intel_modeset_gem_init(struct drm_device *dev); extern void intel_modeset_cleanup(struct drm_device *dev); extern int intel_modeset_vga_set_state(struct drm_device *dev, bool state); diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 8f9cdd7..7c4c7d5 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -8698,12 +8698,17 @@ static void intel_init_quirks(struct drm_device *dev) } /* Disable the VGA plane that we never use */ -static void i915_disable_vga(struct drm_device *dev) +static bool i915_disable_vga(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; + bool was_enabled; u8 sr1; u32 vga_reg = i915_vgacntrl_reg(dev); + was_enabled = !(I915_READ(vga_reg) & VGA_DISP_DISABLE); + DRM_DEBUG_KMS("VGA output is currently %s\n", + was_enabled ? "enabled" : "disabled"); + vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO); outb(SR01, VGA_SR_INDEX); sr1 = inb(VGA_SR_DATA); @@ -8713,6 +8718,8 @@ static void i915_disable_vga(struct drm_device *dev) I915_WRITE(vga_reg, VGA_DISP_DISABLE); POSTING_READ(vga_reg); + + return was_enabled; } void intel_modeset_init_hw(struct drm_device *dev) @@ -8728,7 +8735,8 @@ void intel_modeset_init_hw(struct drm_device *dev) mutex_unlock(&dev->struct_mutex); } -void intel_modeset_init(struct drm_device *dev) +void intel_modeset_init(struct drm_device *dev, + bool *was_vga_enabled) { struct drm_i915_private *dev_priv = dev->dev_private; int i, ret; @@ -8775,7 +8783,7 @@ void intel_modeset_init(struct drm_device *dev) intel_pch_pll_init(dev); /* Just disable it once at startup */ - i915_disable_vga(dev); + *was_vga_enabled = i915_disable_vga(dev); intel_setup_outputs(dev); /* Just in case the BIOS is doing something questionable. */ diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 07d95a1..985e9dd 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -146,6 +146,8 @@ struct intel_fbdev { struct intel_framebuffer ifb; struct list_head fbdev_list; struct drm_display_mode *our_mode; + bool stolen; + int preferred_bpp; }; struct intel_encoder { @@ -212,6 +214,7 @@ struct intel_crtc { enum plane plane; enum transcoder cpu_transcoder; u8 lut_r[256], lut_g[256], lut_b[256]; + bool mode_valid; /* * Whether the crtc and the connected output pipeline is active. Implies * that crtc->enabled is set, i.e. the current mode configuration has @@ -612,6 +615,7 @@ extern int intel_framebuffer_init(struct drm_device *dev, struct intel_framebuffer *ifb, struct drm_mode_fb_cmd2 *mode_cmd, struct drm_i915_gem_object *obj); +extern void intel_fbdev_init_bios(struct drm_device *dev); extern int intel_fbdev_init(struct drm_device *dev); extern void intel_fbdev_initial_config(struct drm_device *dev); extern void intel_fbdev_fini(struct drm_device *dev); diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c index de0ac4c..ca6c8e6 100644 --- a/drivers/gpu/drm/i915/intel_fb.c +++ b/drivers/gpu/drm/i915/intel_fb.c @@ -131,7 +131,6 @@ static int intelfb_create(struct intel_fbdev *ifbdev, struct drm_device *dev = ifbdev->helper.dev; struct drm_mode_fb_cmd2 mode_cmd = { 0 }; struct drm_i915_gem_object *obj; - struct fb_info *info; int size, ret; /* we don't do packed 24bpp */ @@ -176,14 +175,7 @@ static int intelfb_create(struct intel_fbdev *ifbdev, mode_cmd.width, mode_cmd.height, obj->gtt_offset, obj); - info = intelfb_create_info(ifbdev); - if (info == NULL) { - ret = -ENOMEM; - goto out_unpin; - } - mutex_unlock(&dev->struct_mutex); - vga_switcheroo_client_fb_set(dev->pdev, info); return 0; out_unpin: @@ -200,17 +192,92 @@ static int intel_fb_find_or_create_single(struct drm_fb_helper *helper, { struct intel_fbdev *ifbdev = (struct intel_fbdev *)helper; int new_fb = 0; - int ret; if (!helper->fb) { - ret = intelfb_create(ifbdev, sizes); - if (ret) - return ret; + struct fb_info *info; + + if (!ifbdev->stolen) { + int ret = intelfb_create(ifbdev, sizes); + if (ret) + return ret; + } + + info = intelfb_create_info(ifbdev); + if (info == NULL) { + DRM_DEBUG_KMS("fb creation failed\n"); + return -ENOMEM; + } + vga_switcheroo_client_fb_set(helper->dev->pdev, info); + new_fb = 1; } + return new_fb; } +static struct drm_fb_helper_crtc * +intel_fb_helper_crtc(struct drm_fb_helper *fb_helper, struct drm_crtc *crtc) +{ + int i; + + for (i = 0; i < fb_helper->crtc_count; i++) + if (fb_helper->crtc_info[i].mode_set.crtc == crtc) + return &fb_helper->crtc_info[i]; + + return NULL; +} + +static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper, + struct drm_fb_helper_crtc **crtcs, + struct drm_display_mode **modes, + bool *enabled, int width, int height) +{ + int i; + + for (i = 0; i < fb_helper->connector_count; i++) { + struct drm_connector *connector; + struct drm_encoder *encoder; + + connector = fb_helper->connector_info[i]->connector; + if (!enabled[i]) { + DRM_DEBUG_KMS("connector %d not enabled, skipping\n", + connector->base.id); + continue; + } + + encoder = connector->encoder; + if (!encoder || !encoder->crtc) { + DRM_DEBUG_KMS("connector %d has no encoder or crtc, skipping\n", + connector->base.id); + continue; + } + + if (WARN_ON(!encoder->crtc->enabled)) { + DRM_DEBUG_KMS("connector %s on crtc %d has inconsistent state, aborting\n", + drm_get_connector_name(connector), + encoder->crtc->base.id); + return false; + } + + if (!to_intel_crtc(encoder->crtc)->mode_valid) { + DRM_DEBUG_KMS("connector %s on crtc %d has an invalid mode, aborting\n", + drm_get_connector_name(connector), + encoder->crtc->base.id); + return false; + } + + modes[i] = &encoder->crtc->mode; + crtcs[i] = intel_fb_helper_crtc(fb_helper, encoder->crtc); + + DRM_DEBUG_KMS("connector %s on crtc %d: %s\n", + drm_get_connector_name(connector), + encoder->crtc->base.id, + modes[i]->name); + } + + return true; +} + static struct drm_fb_helper_funcs intel_fb_helper_funcs = { .gamma_set = intel_crtc_fb_gamma_set, .gamma_get = intel_crtc_fb_gamma_get, @@ -241,23 +308,215 @@ static void intel_fbdev_destroy(struct drm_device *dev, } } -int intel_fbdev_init(struct drm_device *dev) +static bool pipe_enabled(struct drm_i915_private *dev_priv, enum pipe pipe) { + enum transcoder cpu_transcoder = + intel_pipe_to_cpu_transcoder(dev_priv, pipe); + return !!(I915_READ(PIPECONF(cpu_transcoder)) & PIPECONF_ENABLE); +} + +/* + * Try to read the BIOS display configuration and use it for the initial + * fb configuration. + * + * The BIOS or boot loader will generally create an initial display + * configuration for us that includes some set of active pipes and displays. + * This routine tries to figure out which pipes are active, what resolutions + * are being displayed, and then allocates a framebuffer and initial fb + * config based on that data. + * + * If the BIOS or boot loader leaves the display in VGA mode, there's not + * much we can do; switching out of that mode involves allocating a new, + * high res buffer, and also recalculating bandwidth requirements for the + * new bpp configuration. + * + * However, if we're loaded into an existing, high res mode, we should + * be able to allocate a buffer big enough to handle the largest active + * mode, create a mode_set for it, and pass it to the fb helper to create + * the configuration. + */ +void intel_fbdev_init_bios(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; struct intel_fbdev *ifbdev; - drm_i915_private_t *dev_priv = dev->dev_private; - int ret; + struct drm_crtc *crtc; + struct drm_mode_fb_cmd2 mode_cmd = { 0 }; + struct drm_i915_gem_object *obj; + u32 obj_offset = 0; + int mode_bpp = 0; + u32 active = 0; + + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { + struct intel_crtc *intel_crtc = to_intel_crtc(crtc); + int pipe = intel_crtc->pipe, plane = intel_crtc->plane; + u32 val, bpp, offset, format; + int pitch, width, height; + + if (!pipe_enabled(dev_priv, pipe)) { + DRM_DEBUG_KMS("pipe %c not active, skipping\n", + pipe_name(pipe)); + continue; + } + + val = I915_READ(DSPCNTR(plane)); + + if (INTEL_INFO(dev)->gen >= 4) { + if (val & DISPPLANE_TILED) { + DRM_DEBUG_KMS("tiled BIOS fb?\n"); + continue; /* unexpected! */ + } + } + + switch (val & DISPPLANE_PIXFORMAT_MASK) { + case DISPPLANE_YUV422: + default: + DRM_DEBUG_KMS("pipe %c unsupported pixel format %x, skipping\n", + pipe_name(pipe), (val & DISPPLANE_PIXFORMAT_MASK) >> 26); + continue; + case DISPPLANE_8BPP: + format = DRM_FORMAT_C8; + bpp = 8; + break; + case DISPPLANE_BGRX555: + format = DRM_FORMAT_XRGB1555; + bpp = 16; + break; + case DISPPLANE_BGRX565: + format = DRM_FORMAT_RGB565; + bpp = 16; + break; + case DISPPLANE_BGRX888: + format = DRM_FORMAT_XRGB8888; + bpp = 32; + break; + } + + if (mode_cmd.pixel_format == 0) { + mode_bpp = bpp; + mode_cmd.pixel_format = format; + } + + if (mode_cmd.pixel_format != format) { + DRM_DEBUG_KMS("pipe %c has format/bpp (%d, %d) mismatch: skipping\n", + pipe_name(pipe), format, bpp); + continue; + } + + if (INTEL_INFO(dev)->gen >= 4) { + if (I915_READ(DSPTILEOFF(plane))) { + DRM_DEBUG_KMS("pipe %c is offset: skipping\n", + pipe_name(pipe)); + continue; + } + + offset = I915_READ(DSPSURF(plane)); + } else + offset = I915_READ(DSPADDR(plane)); + if (!obj_offset) + obj_offset = offset; + + pitch = I915_READ(DSPSTRIDE(plane)); + if (mode_cmd.pitches[0] == 0) + mode_cmd.pitches[0] = pitch; + + if (offset != obj_offset || pitch != mode_cmd.pitches[0]) { + DRM_DEBUG_KMS("multiple pipe setup not in clone mode, sjipping\n"); + continue; + } + + val = I915_READ(PIPESRC(pipe)); + width = ((val >> 16) & 0xfff) + 1; + height = ((val >> 0) & 0xfff) + 1; + + DRM_DEBUG_KMS("Found active pipe [%d/%d]: size=%dx%d@%d, offset=%x\n", + pipe, plane, width, height, bpp, offset); + + if (width > mode_cmd.width) + mode_cmd.width = width; + + if (height > mode_cmd.height) + mode_cmd.height = height; + + active |= 1 << pipe; + } + + if (active == 0) { + DRM_DEBUG_KMS("no active pipes found, not using BIOS config\n"); + return; + } ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL); - if (!ifbdev) - return -ENOMEM; + if (ifbdev == NULL) { + DRM_DEBUG_KMS("failed to alloc intel fbdev\n"); + return; + } - dev_priv->fbdev = ifbdev; + ifbdev->stolen = true; + ifbdev->preferred_bpp = mode_bpp; ifbdev->helper.funcs = &intel_fb_helper_funcs; + ifbdev->helper.funcs->initial_config = intel_fb_initial_config; + + /* assume a 1:1 linear mapping between stolen and GTT */ + obj = i915_gem_object_create_stolen_for_preallocated(dev, + obj_offset, + obj_offset, + ALIGN(mode_cmd.pitches[0] * mode_cmd.height, PAGE_SIZE)); + if (obj == NULL) { + DRM_DEBUG_KMS("failed to create stolen fb\n"); + goto out_free_ifbdev; + } + + if (intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj)) { + DRM_DEBUG_KMS("intel fb init failed\n"); + goto out_unref_obj; + } + + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { + int ret; + + if ((active & (1 << to_intel_crtc(crtc)->pipe)) == 0) + continue; + + ret = intel_pin_and_fence_fb_obj(dev, obj, NULL); + if (ret) + goto out_unref_obj; + + crtc->fb = &ifbdev->ifb.base; + } + + dev_priv->fbdev = ifbdev; + + DRM_DEBUG_KMS("using BIOS fb for initial console\n"); + return; + +out_unref_obj: + drm_gem_object_unreference(&obj->base); +out_free_ifbdev: + kfree(ifbdev); +} + +int intel_fbdev_init(struct drm_device *dev) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + struct intel_fbdev *ifbdev; + int ret; + + if ((ifbdev = dev_priv->fbdev) == NULL) { + ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL); + if (ifbdev == NULL) + return -ENOMEM; + + ifbdev->helper.funcs = &intel_fb_helper_funcs; + ifbdev->preferred_bpp = 32; + + dev_priv->fbdev = ifbdev; + } ret = drm_fb_helper_init(dev, &ifbdev->helper, - dev_priv->num_pipe, - INTELFB_CONN_LIMIT); + dev_priv->num_pipe, + INTELFB_CONN_LIMIT); if (ret) { + dev_priv->fbdev = NULL; kfree(ifbdev); return ret; } @@ -270,9 +529,10 @@ int intel_fbdev_init(struct drm_device *dev) void intel_fbdev_initial_config(struct drm_device *dev) { drm_i915_private_t *dev_priv = dev->dev_private; + struct intel_fbdev *ifbdev = dev_priv->fbdev; /* Due to peculiar init order wrt to hpd handling this is separate. */ - drm_fb_helper_initial_config(&dev_priv->fbdev->helper, 32); + drm_fb_helper_initial_config(&ifbdev->helper, ifbdev->preferred_bpp); } void intel_fbdev_fini(struct drm_device *dev) @@ -300,7 +560,8 @@ MODULE_LICENSE("GPL and additional rights"); void intel_fb_output_poll_changed(struct drm_device *dev) { drm_i915_private_t *dev_priv = dev->dev_private; - drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper); + if (dev_priv->fbdev) + drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper); } void intel_fb_restore_mode(struct drm_device *dev)