diff options
Diffstat (limited to 'drivers/gpu/drm/qxl/qxl_fb.c')
| -rw-r--r-- | drivers/gpu/drm/qxl/qxl_fb.c | 567 |
1 files changed, 567 insertions, 0 deletions
diff --git a/drivers/gpu/drm/qxl/qxl_fb.c b/drivers/gpu/drm/qxl/qxl_fb.c new file mode 100644 index 00000000000..b3c51275df5 --- /dev/null +++ b/drivers/gpu/drm/qxl/qxl_fb.c @@ -0,0 +1,567 @@ +/* + * Copyright © 2013 Red Hat + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + * Authors: + * David Airlie + */ +#include <linux/module.h> +#include <linux/fb.h> + +#include "drmP.h" +#include "drm/drm.h" +#include "drm/drm_crtc.h" +#include "drm/drm_crtc_helper.h" +#include "qxl_drv.h" + +#include "qxl_object.h" +#include "drm_fb_helper.h" + +#define QXL_DIRTY_DELAY (HZ / 30) + +struct qxl_fbdev { + struct drm_fb_helper helper; + struct qxl_framebuffer qfb; + struct list_head fbdev_list; + struct qxl_device *qdev; + + void *shadow; + int size; + + /* dirty memory logging */ + struct { + spinlock_t lock; + bool active; + unsigned x1; + unsigned y1; + unsigned x2; + unsigned y2; + } dirty; +}; + +static void qxl_fb_image_init(struct qxl_fb_image *qxl_fb_image, + struct qxl_device *qdev, struct fb_info *info, + const struct fb_image *image) +{ + qxl_fb_image->qdev = qdev; + if (info) { + qxl_fb_image->visual = info->fix.visual; + if (qxl_fb_image->visual == FB_VISUAL_TRUECOLOR || + qxl_fb_image->visual == FB_VISUAL_DIRECTCOLOR) + memcpy(&qxl_fb_image->pseudo_palette, + info->pseudo_palette, + sizeof(qxl_fb_image->pseudo_palette)); + } else { + /* fallback */ + if (image->depth == 1) + qxl_fb_image->visual = FB_VISUAL_MONO10; + else + qxl_fb_image->visual = FB_VISUAL_DIRECTCOLOR; + } + if (image) { + memcpy(&qxl_fb_image->fb_image, image, + sizeof(qxl_fb_image->fb_image)); + } +} + +static void qxl_fb_dirty_flush(struct fb_info *info) +{ + struct qxl_fbdev *qfbdev = info->par; + struct qxl_device *qdev = qfbdev->qdev; + struct qxl_fb_image qxl_fb_image; + struct fb_image *image = &qxl_fb_image.fb_image; + u32 x1, x2, y1, y2; + + /* TODO: hard coding 32 bpp */ + int stride = qfbdev->qfb.base.pitches[0] * 4; + + x1 = qfbdev->dirty.x1; + x2 = qfbdev->dirty.x2; + y1 = qfbdev->dirty.y1; + y2 = qfbdev->dirty.y2; + /* + * we are using a shadow draw buffer, at qdev->surface0_shadow + */ + qxl_io_log(qdev, "dirty x[%d, %d], y[%d, %d]", x1, x2, y1, y2); + image->dx = x1; + image->dy = y1; + image->width = x2 - x1; + image->height = y2 - y1; + image->fg_color = 0xffffffff; /* unused, just to avoid uninitialized + warnings */ + image->bg_color = 0; + image->depth = 32; /* TODO: take from somewhere? */ + image->cmap.start = 0; + image->cmap.len = 0; + image->cmap.red = NULL; + image->cmap.green = NULL; + image->cmap.blue = NULL; + image->cmap.transp = NULL; + image->data = qfbdev->shadow + (x1 * 4) + (stride * y1); + + qxl_fb_image_init(&qxl_fb_image, qdev, info, NULL); + qxl_draw_opaque_fb(&qxl_fb_image, stride); + qfbdev->dirty.x1 = 0; + qfbdev->dirty.x2 = 0; + qfbdev->dirty.y1 = 0; + qfbdev->dirty.y2 = 0; +} + +static void qxl_deferred_io(struct fb_info *info, + struct list_head *pagelist) +{ + struct qxl_fbdev *qfbdev = info->par; + unsigned long start, end, min, max; + struct page *page; + int y1, y2; + + min = ULONG_MAX; + max = 0; + list_for_each_entry(page, pagelist, lru) { + start = page->index << PAGE_SHIFT; + end = start + PAGE_SIZE - 1; + min = min(min, start); + max = max(max, end); + } + + if (min < max) { + y1 = min / info->fix.line_length; + y2 = (max / info->fix.line_length) + 1; + + /* TODO: add spin lock? */ + /* spin_lock_irqsave(&qfbdev->dirty.lock, flags); */ + qfbdev->dirty.x1 = 0; + qfbdev->dirty.y1 = y1; + qfbdev->dirty.x2 = info->var.xres; + qfbdev->dirty.y2 = y2; + /* spin_unlock_irqrestore(&qfbdev->dirty.lock, flags); */ + } + + qxl_fb_dirty_flush(info); +}; + + +static struct fb_deferred_io qxl_defio = { + .delay = QXL_DIRTY_DELAY, + .deferred_io = qxl_deferred_io, +}; + +static void qxl_fb_fillrect(struct fb_info *info, + const struct fb_fillrect *fb_rect) +{ + struct qxl_fbdev *qfbdev = info->par; + struct qxl_device *qdev = qfbdev->qdev; + struct qxl_rect rect; + uint32_t color; + int x = fb_rect->dx; + int y = fb_rect->dy; + int width = fb_rect->width; + int height = fb_rect->height; + uint16_t rop; + struct qxl_draw_fill qxl_draw_fill_rec; + + if (info->fix.visual == FB_VISUAL_TRUECOLOR || + info->fix.visual == FB_VISUAL_DIRECTCOLOR) + color = ((u32 *) (info->pseudo_palette))[fb_rect->color]; + else + color = fb_rect->color; + rect.left = x; + rect.right = x + width; + rect.top = y; + rect.bottom = y + height; + switch (fb_rect->rop) { + case ROP_XOR: + rop = SPICE_ROPD_OP_XOR; + break; + case ROP_COPY: + rop = SPICE_ROPD_OP_PUT; + break; + default: + pr_err("qxl_fb_fillrect(): unknown rop, " + "defaulting to SPICE_ROPD_OP_PUT\n"); + rop = SPICE_ROPD_OP_PUT; + } + qxl_draw_fill_rec.qdev = qdev; + qxl_draw_fill_rec.rect = rect; + qxl_draw_fill_rec.color = color; + qxl_draw_fill_rec.rop = rop; + if (!drm_can_sleep()) { + qxl_io_log(qdev, + "%s: TODO use RCU, mysterious locks with spin_lock\n", + __func__); + return; + } + qxl_draw_fill(&qxl_draw_fill_rec); +} + +static void qxl_fb_copyarea(struct fb_info *info, + const struct fb_copyarea *region) +{ + struct qxl_fbdev *qfbdev = info->par; + + qxl_draw_copyarea(qfbdev->qdev, + region->width, region->height, + region->sx, region->sy, + region->dx, region->dy); +} + +static void qxl_fb_imageblit_safe(struct qxl_fb_image *qxl_fb_image) +{ + qxl_draw_opaque_fb(qxl_fb_image, 0); +} + +static void qxl_fb_imageblit(struct fb_info *info, + const struct fb_image *image) +{ + struct qxl_fbdev *qfbdev = info->par; + struct qxl_device *qdev = qfbdev->qdev; + struct qxl_fb_image qxl_fb_image; + + if (!drm_can_sleep()) { + /* we cannot do any ttm_bo allocation since that will fail on + * ioremap_wc..__get_vm_area_node, so queue the work item + * instead This can happen from printk inside an interrupt + * context, i.e.: smp_apic_timer_interrupt..check_cpu_stall */ + qxl_io_log(qdev, + "%s: TODO use RCU, mysterious locks with spin_lock\n", + __func__); + return; + } + + /* ensure proper order of rendering operations - TODO: must do this + * for everything. */ + qxl_fb_image_init(&qxl_fb_image, qfbdev->qdev, info, image); + qxl_fb_imageblit_safe(&qxl_fb_image); +} + +int qxl_fb_init(struct qxl_device *qdev) +{ + return 0; +} + +static struct fb_ops qxlfb_ops = { + .owner = THIS_MODULE, + .fb_check_var = drm_fb_helper_check_var, + .fb_set_par = drm_fb_helper_set_par, /* TODO: copy vmwgfx */ + .fb_fillrect = qxl_fb_fillrect, + .fb_copyarea = qxl_fb_copyarea, + .fb_imageblit = qxl_fb_imageblit, + .fb_pan_display = drm_fb_helper_pan_display, + .fb_blank = drm_fb_helper_blank, + .fb_setcmap = drm_fb_helper_setcmap, + .fb_debug_enter = drm_fb_helper_debug_enter, + .fb_debug_leave = drm_fb_helper_debug_leave, +}; + +static void qxlfb_destroy_pinned_object(struct drm_gem_object *gobj) +{ + struct qxl_bo *qbo = gem_to_qxl_bo(gobj); + int ret; + + ret = qxl_bo_reserve(qbo, false); + if (likely(ret == 0)) { + qxl_bo_kunmap(qbo); + qxl_bo_unpin(qbo); + qxl_bo_unreserve(qbo); + } + drm_gem_object_unreference_unlocked(gobj); +} + +int qxl_get_handle_for_primary_fb(struct qxl_device *qdev, + struct drm_file *file_priv, + uint32_t *handle) +{ + int r; + struct drm_gem_object *gobj = qdev->fbdev_qfb->obj; + + BUG_ON(!gobj); + /* drm_get_handle_create adds a reference - good */ + r = drm_gem_handle_create(file_priv, gobj, handle); + if (r) + return r; + return 0; +} + +static int qxlfb_create_pinned_object(struct qxl_fbdev *qfbdev, + struct drm_mode_fb_cmd2 *mode_cmd, + struct drm_gem_object **gobj_p) +{ + struct qxl_device *qdev = qfbdev->qdev; + struct drm_gem_object *gobj = NULL; + struct qxl_bo *qbo = NULL; + int ret; + int aligned_size, size; + int height = mode_cmd->height; + int bpp; + int depth; + + drm_fb_get_bpp_depth(mode_cmd->pixel_format, &bpp, &depth); + + size = mode_cmd->pitches[0] * height; + aligned_size = ALIGN(size, PAGE_SIZE); + /* TODO: unallocate and reallocate surface0 for real. Hack to just + * have a large enough surface0 for 1024x768 Xorg 32bpp mode */ + ret = qxl_gem_object_create(qdev, aligned_size, 0, + QXL_GEM_DOMAIN_SURFACE, + false, /* is discardable */ + false, /* is kernel (false means device) */ + NULL, + &gobj); + if (ret) { + pr_err("failed to allocate framebuffer (%d)\n", + aligned_size); + return -ENOMEM; + } + qbo = gem_to_qxl_bo(gobj); + + qbo->surf.width = mode_cmd->width; + qbo->surf.height = mode_cmd->height; + qbo->surf.stride = mode_cmd->pitches[0]; + qbo->surf.format = SPICE_SURFACE_FMT_32_xRGB; + ret = qxl_bo_reserve(qbo, false); + if (unlikely(ret != 0)) + goto out_unref; + ret = qxl_bo_pin(qbo, QXL_GEM_DOMAIN_SURFACE, NULL); + if (ret) { + qxl_bo_unreserve(qbo); + goto out_unref; + } + ret = qxl_bo_kmap(qbo, NULL); + qxl_bo_unreserve(qbo); /* unreserve, will be mmaped */ + if (ret) + goto out_unref; + + *gobj_p = gobj; + return 0; +out_unref: + qxlfb_destroy_pinned_object(gobj); + *gobj_p = NULL; + return ret; +} + +static int qxlfb_create(struct qxl_fbdev *qfbdev, + struct drm_fb_helper_surface_size *sizes) +{ + struct qxl_device *qdev = qfbdev->qdev; + struct fb_info *info; + struct drm_framebuffer *fb = NULL; + struct drm_mode_fb_cmd2 mode_cmd; + struct drm_gem_object *gobj = NULL; + struct qxl_bo *qbo = NULL; + struct device *device = &qdev->pdev->dev; + int ret; + int size; + int bpp = sizes->surface_bpp; + int depth = sizes->surface_depth; + void *shadow; + + mode_cmd.width = sizes->surface_width; + mode_cmd.height = sizes->surface_height; + + mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 1) / 8), 64); + mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth); + + ret = qxlfb_create_pinned_object(qfbdev, &mode_cmd, &gobj); + qbo = gem_to_qxl_bo(gobj); + QXL_INFO(qdev, "%s: %dx%d %d\n", __func__, mode_cmd.width, + mode_cmd.height, mode_cmd.pitches[0]); + + shadow = vmalloc(mode_cmd.pitches[0] * mode_cmd.height); + /* TODO: what's the usual response to memory allocation errors? */ + BUG_ON(!shadow); + QXL_INFO(qdev, + "surface0 at gpu offset %lld, mmap_offset %lld (virt %p, shadow %p)\n", + qxl_bo_gpu_offset(qbo), + qxl_bo_mmap_offset(qbo), + qbo->kptr, + shadow); + size = mode_cmd.pitches[0] * mode_cmd.height; + + info = framebuffer_alloc(0, device); + if (info == NULL) { + ret = -ENOMEM; + goto out_unref; + } + + info->par = qfbdev; + + qxl_framebuffer_init(qdev->ddev, &qfbdev->qfb, &mode_cmd, gobj); + + fb = &qfbdev->qfb.base; + + /* setup helper with fb data */ + qfbdev->helper.fb = fb; + qfbdev->helper.fbdev = info; + qfbdev->shadow = shadow; + strcpy(info->fix.id, "qxldrmfb"); + + drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); + + info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT; + info->fbops = &qxlfb_ops; + + /* + * TODO: using gobj->size in various places in this function. Not sure + * what the difference between the different sizes is. + */ + info->fix.smem_start = qdev->vram_base; /* TODO - correct? */ + info->fix.smem_len = gobj->size; + info->screen_base = qfbdev->shadow; + info->screen_size = gobj->size; + + drm_fb_helper_fill_var(info, &qfbdev->helper, sizes->fb_width, + sizes->fb_height); + + /* setup aperture base/size for vesafb takeover */ + info->apertures = alloc_apertures(1); + if (!info->apertures) { + ret = -ENOMEM; + goto out_unref; + } + info->apertures->ranges[0].base = qdev->ddev->mode_config.fb_base; + info->apertures->ranges[0].size = qdev->vram_size; + + info->fix.mmio_start = 0; + info->fix.mmio_len = 0; + + if (info->screen_base == NULL) { + ret = -ENOSPC; + goto out_unref; + } + + ret = fb_alloc_cmap(&info->cmap, 256, 0); + if (ret) { + ret = -ENOMEM; + goto out_unref; + } + + info->fbdefio = &qxl_defio; + fb_deferred_io_init(info); + + qdev->fbdev_info = info; + qdev->fbdev_qfb = &qfbdev->qfb; + DRM_INFO("fb mappable at 0x%lX, size %lu\n", info->fix.smem_start, (unsigned long)info->screen_size); + DRM_INFO("fb: depth %d, pitch %d, width %d, height %d\n", fb->depth, fb->pitches[0], fb->width, fb->height); + return 0; + +out_unref: + if (qbo) { + ret = qxl_bo_reserve(qbo, false); + if (likely(ret == 0)) { + qxl_bo_kunmap(qbo); + qxl_bo_unpin(qbo); + qxl_bo_unreserve(qbo); + } + } + if (fb && ret) { + drm_gem_object_unreference(gobj); + drm_framebuffer_cleanup(fb); + kfree(fb); + } + drm_gem_object_unreference(gobj); + return ret; +} + +static int qxl_fb_find_or_create_single( + struct drm_fb_helper *helper, + struct drm_fb_helper_surface_size *sizes) +{ + struct qxl_fbdev *qfbdev = (struct qxl_fbdev *)helper; + int new_fb = 0; + int ret; + + if (!helper->fb) { + ret = qxlfb_create(qfbdev, sizes); + if (ret) + return ret; + new_fb = 1; + } + return new_fb; +} + +static int qxl_fbdev_destroy(struct drm_device *dev, struct qxl_fbdev *qfbdev) +{ + struct fb_info *info; + struct qxl_framebuffer *qfb = &qfbdev->qfb; + + if (qfbdev->helper.fbdev) { + info = qfbdev->helper.fbdev; + + unregister_framebuffer(info); + framebuffer_release(info); + } + if (qfb->obj) { + qxlfb_destroy_pinned_object(qfb->obj); + qfb->obj = NULL; + } + drm_fb_helper_fini(&qfbdev->helper); + vfree(qfbdev->shadow); + drm_framebuffer_cleanup(&qfb->base); + + return 0; +} + +static struct drm_fb_helper_funcs qxl_fb_helper_funcs = { + /* TODO + .gamma_set = qxl_crtc_fb_gamma_set, + .gamma_get = qxl_crtc_fb_gamma_get, + */ + .fb_probe = qxl_fb_find_or_create_single, +}; + +int qxl_fbdev_init(struct qxl_device *qdev) +{ + struct qxl_fbdev *qfbdev; + int bpp_sel = 32; /* TODO: parameter from somewhere? */ + int ret; + + qfbdev = kzalloc(sizeof(struct qxl_fbdev), GFP_KERNEL); + if (!qfbdev) + return -ENOMEM; + + qfbdev->qdev = qdev; + qdev->mode_info.qfbdev = qfbdev; + qfbdev->helper.funcs = &qxl_fb_helper_funcs; + + ret = drm_fb_helper_init(qdev->ddev, &qfbdev->helper, + 1 /* num_crtc - QXL supports just 1 */, + QXLFB_CONN_LIMIT); + if (ret) { + kfree(qfbdev); + return ret; + } + + drm_fb_helper_single_add_all_connectors(&qfbdev->helper); + drm_fb_helper_initial_config(&qfbdev->helper, bpp_sel); + return 0; +} + +void qxl_fbdev_fini(struct qxl_device *qdev) +{ + if (!qdev->mode_info.qfbdev) + return; + + qxl_fbdev_destroy(qdev->ddev, qdev->mode_info.qfbdev); + kfree(qdev->mode_info.qfbdev); + qdev->mode_info.qfbdev = NULL; +} + + |