summaryrefslogtreecommitdiffstats
path: root/kernel/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c')
-rw-r--r--kernel/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c662
1 files changed, 662 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c b/kernel/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
new file mode 100644
index 000000000..0a474f391
--- /dev/null
+++ b/kernel/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
@@ -0,0 +1,662 @@
+/**************************************************************************
+ *
+ * Copyright © 2007 David Airlie
+ * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
+ * All Rights Reserved.
+ *
+ * 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, sub license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+
+#include <linux/export.h>
+
+#include <drm/drmP.h>
+#include "vmwgfx_drv.h"
+
+#include <drm/ttm/ttm_placement.h>
+
+#define VMW_DIRTY_DELAY (HZ / 30)
+
+struct vmw_fb_par {
+ struct vmw_private *vmw_priv;
+
+ void *vmalloc;
+
+ struct vmw_dma_buffer *vmw_bo;
+ struct ttm_bo_kmap_obj map;
+
+ u32 pseudo_palette[17];
+
+ unsigned depth;
+ unsigned bpp;
+
+ unsigned max_width;
+ unsigned max_height;
+
+ void *bo_ptr;
+ unsigned bo_size;
+ bool bo_iowrite;
+
+ struct {
+ spinlock_t lock;
+ bool active;
+ unsigned x1;
+ unsigned y1;
+ unsigned x2;
+ unsigned y2;
+ } dirty;
+};
+
+static int vmw_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
+ unsigned blue, unsigned transp,
+ struct fb_info *info)
+{
+ struct vmw_fb_par *par = info->par;
+ u32 *pal = par->pseudo_palette;
+
+ if (regno > 15) {
+ DRM_ERROR("Bad regno %u.\n", regno);
+ return 1;
+ }
+
+ switch (par->depth) {
+ case 24:
+ case 32:
+ pal[regno] = ((red & 0xff00) << 8) |
+ (green & 0xff00) |
+ ((blue & 0xff00) >> 8);
+ break;
+ default:
+ DRM_ERROR("Bad depth %u, bpp %u.\n", par->depth, par->bpp);
+ return 1;
+ }
+
+ return 0;
+}
+
+static int vmw_fb_check_var(struct fb_var_screeninfo *var,
+ struct fb_info *info)
+{
+ int depth = var->bits_per_pixel;
+ struct vmw_fb_par *par = info->par;
+ struct vmw_private *vmw_priv = par->vmw_priv;
+
+ switch (var->bits_per_pixel) {
+ case 32:
+ depth = (var->transp.length > 0) ? 32 : 24;
+ break;
+ default:
+ DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
+ return -EINVAL;
+ }
+
+ switch (depth) {
+ case 24:
+ var->red.offset = 16;
+ var->green.offset = 8;
+ var->blue.offset = 0;
+ var->red.length = 8;
+ var->green.length = 8;
+ var->blue.length = 8;
+ var->transp.length = 0;
+ var->transp.offset = 0;
+ break;
+ case 32:
+ var->red.offset = 16;
+ var->green.offset = 8;
+ var->blue.offset = 0;
+ var->red.length = 8;
+ var->green.length = 8;
+ var->blue.length = 8;
+ var->transp.length = 8;
+ var->transp.offset = 24;
+ break;
+ default:
+ DRM_ERROR("Bad depth %u.\n", depth);
+ return -EINVAL;
+ }
+
+ if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) &&
+ (var->xoffset != 0 || var->yoffset != 0)) {
+ DRM_ERROR("Can not handle panning without display topology\n");
+ return -EINVAL;
+ }
+
+ if ((var->xoffset + var->xres) > par->max_width ||
+ (var->yoffset + var->yres) > par->max_height) {
+ DRM_ERROR("Requested geom can not fit in framebuffer\n");
+ return -EINVAL;
+ }
+
+ if (!vmw_kms_validate_mode_vram(vmw_priv,
+ var->xres * var->bits_per_pixel/8,
+ var->yoffset + var->yres)) {
+ DRM_ERROR("Requested geom can not fit in framebuffer\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int vmw_fb_set_par(struct fb_info *info)
+{
+ struct vmw_fb_par *par = info->par;
+ struct vmw_private *vmw_priv = par->vmw_priv;
+ int ret;
+
+ info->fix.line_length = info->var.xres * info->var.bits_per_pixel/8;
+
+ ret = vmw_kms_write_svga(vmw_priv, info->var.xres, info->var.yres,
+ info->fix.line_length,
+ par->bpp, par->depth);
+ if (ret)
+ return ret;
+
+ if (vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) {
+ /* TODO check if pitch and offset changes */
+ vmw_write(vmw_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 1);
+ vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, 0);
+ vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, true);
+ vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, info->var.xoffset);
+ vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, info->var.yoffset);
+ vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, info->var.xres);
+ vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, info->var.yres);
+ vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
+ }
+
+ /* This is really helpful since if this fails the user
+ * can probably not see anything on the screen.
+ */
+ WARN_ON(vmw_read(vmw_priv, SVGA_REG_FB_OFFSET) != 0);
+
+ return 0;
+}
+
+static int vmw_fb_pan_display(struct fb_var_screeninfo *var,
+ struct fb_info *info)
+{
+ return 0;
+}
+
+static int vmw_fb_blank(int blank, struct fb_info *info)
+{
+ return 0;
+}
+
+/*
+ * Dirty code
+ */
+
+static void vmw_fb_dirty_flush(struct vmw_fb_par *par)
+{
+ struct vmw_private *vmw_priv = par->vmw_priv;
+ struct fb_info *info = vmw_priv->fb_info;
+ int stride = (info->fix.line_length / 4);
+ int *src = (int *)info->screen_base;
+ __le32 __iomem *vram_mem = par->bo_ptr;
+ unsigned long flags;
+ unsigned x, y, w, h;
+ int i, k;
+ struct {
+ uint32_t header;
+ SVGAFifoCmdUpdate body;
+ } *cmd;
+
+ if (vmw_priv->suspended)
+ return;
+
+ spin_lock_irqsave(&par->dirty.lock, flags);
+ if (!par->dirty.active) {
+ spin_unlock_irqrestore(&par->dirty.lock, flags);
+ return;
+ }
+ x = par->dirty.x1;
+ y = par->dirty.y1;
+ w = min(par->dirty.x2, info->var.xres) - x;
+ h = min(par->dirty.y2, info->var.yres) - y;
+ par->dirty.x1 = par->dirty.x2 = 0;
+ par->dirty.y1 = par->dirty.y2 = 0;
+ spin_unlock_irqrestore(&par->dirty.lock, flags);
+
+ for (i = y * stride; i < info->fix.smem_len / 4; i += stride) {
+ for (k = i+x; k < i+x+w && k < info->fix.smem_len / 4; k++)
+ iowrite32(src[k], vram_mem + k);
+ }
+
+#if 0
+ DRM_INFO("%s, (%u, %u) (%ux%u)\n", __func__, x, y, w, h);
+#endif
+
+ cmd = vmw_fifo_reserve(vmw_priv, sizeof(*cmd));
+ if (unlikely(cmd == NULL)) {
+ DRM_ERROR("Fifo reserve failed.\n");
+ return;
+ }
+
+ cmd->header = cpu_to_le32(SVGA_CMD_UPDATE);
+ cmd->body.x = cpu_to_le32(x);
+ cmd->body.y = cpu_to_le32(y);
+ cmd->body.width = cpu_to_le32(w);
+ cmd->body.height = cpu_to_le32(h);
+ vmw_fifo_commit(vmw_priv, sizeof(*cmd));
+}
+
+static void vmw_fb_dirty_mark(struct vmw_fb_par *par,
+ unsigned x1, unsigned y1,
+ unsigned width, unsigned height)
+{
+ struct fb_info *info = par->vmw_priv->fb_info;
+ unsigned long flags;
+ unsigned x2 = x1 + width;
+ unsigned y2 = y1 + height;
+
+ spin_lock_irqsave(&par->dirty.lock, flags);
+ if (par->dirty.x1 == par->dirty.x2) {
+ par->dirty.x1 = x1;
+ par->dirty.y1 = y1;
+ par->dirty.x2 = x2;
+ par->dirty.y2 = y2;
+ /* if we are active start the dirty work
+ * we share the work with the defio system */
+ if (par->dirty.active)
+ schedule_delayed_work(&info->deferred_work, VMW_DIRTY_DELAY);
+ } else {
+ if (x1 < par->dirty.x1)
+ par->dirty.x1 = x1;
+ if (y1 < par->dirty.y1)
+ par->dirty.y1 = y1;
+ if (x2 > par->dirty.x2)
+ par->dirty.x2 = x2;
+ if (y2 > par->dirty.y2)
+ par->dirty.y2 = y2;
+ }
+ spin_unlock_irqrestore(&par->dirty.lock, flags);
+}
+
+static void vmw_deferred_io(struct fb_info *info,
+ struct list_head *pagelist)
+{
+ struct vmw_fb_par *par = info->par;
+ unsigned long start, end, min, max;
+ unsigned long flags;
+ 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;
+
+ spin_lock_irqsave(&par->dirty.lock, flags);
+ par->dirty.x1 = 0;
+ par->dirty.y1 = y1;
+ par->dirty.x2 = info->var.xres;
+ par->dirty.y2 = y2;
+ spin_unlock_irqrestore(&par->dirty.lock, flags);
+ }
+
+ vmw_fb_dirty_flush(par);
+};
+
+struct fb_deferred_io vmw_defio = {
+ .delay = VMW_DIRTY_DELAY,
+ .deferred_io = vmw_deferred_io,
+};
+
+/*
+ * Draw code
+ */
+
+static void vmw_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
+{
+ cfb_fillrect(info, rect);
+ vmw_fb_dirty_mark(info->par, rect->dx, rect->dy,
+ rect->width, rect->height);
+}
+
+static void vmw_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
+{
+ cfb_copyarea(info, region);
+ vmw_fb_dirty_mark(info->par, region->dx, region->dy,
+ region->width, region->height);
+}
+
+static void vmw_fb_imageblit(struct fb_info *info, const struct fb_image *image)
+{
+ cfb_imageblit(info, image);
+ vmw_fb_dirty_mark(info->par, image->dx, image->dy,
+ image->width, image->height);
+}
+
+/*
+ * Bring up code
+ */
+
+static struct fb_ops vmw_fb_ops = {
+ .owner = THIS_MODULE,
+ .fb_check_var = vmw_fb_check_var,
+ .fb_set_par = vmw_fb_set_par,
+ .fb_setcolreg = vmw_fb_setcolreg,
+ .fb_fillrect = vmw_fb_fillrect,
+ .fb_copyarea = vmw_fb_copyarea,
+ .fb_imageblit = vmw_fb_imageblit,
+ .fb_pan_display = vmw_fb_pan_display,
+ .fb_blank = vmw_fb_blank,
+};
+
+static int vmw_fb_create_bo(struct vmw_private *vmw_priv,
+ size_t size, struct vmw_dma_buffer **out)
+{
+ struct vmw_dma_buffer *vmw_bo;
+ struct ttm_place ne_place = vmw_vram_ne_placement.placement[0];
+ struct ttm_placement ne_placement;
+ int ret;
+
+ ne_placement.num_placement = 1;
+ ne_placement.placement = &ne_place;
+ ne_placement.num_busy_placement = 1;
+ ne_placement.busy_placement = &ne_place;
+
+ ne_place.lpfn = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
+
+ (void) ttm_write_lock(&vmw_priv->reservation_sem, false);
+
+ vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL);
+ if (!vmw_bo) {
+ ret = -ENOMEM;
+ goto err_unlock;
+ }
+
+ ret = vmw_dmabuf_init(vmw_priv, vmw_bo, size,
+ &ne_placement,
+ false,
+ &vmw_dmabuf_bo_free);
+ if (unlikely(ret != 0))
+ goto err_unlock; /* init frees the buffer on failure */
+
+ *out = vmw_bo;
+
+ ttm_write_unlock(&vmw_priv->fbdev_master.lock);
+
+ return 0;
+
+err_unlock:
+ ttm_write_unlock(&vmw_priv->fbdev_master.lock);
+ return ret;
+}
+
+int vmw_fb_init(struct vmw_private *vmw_priv)
+{
+ struct device *device = &vmw_priv->dev->pdev->dev;
+ struct vmw_fb_par *par;
+ struct fb_info *info;
+ unsigned initial_width, initial_height;
+ unsigned fb_width, fb_height;
+ unsigned fb_bpp, fb_depth, fb_offset, fb_pitch, fb_size;
+ int ret;
+
+ fb_bpp = 32;
+ fb_depth = 24;
+
+ /* XXX As shouldn't these be as well. */
+ fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
+ fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
+
+ initial_width = min(vmw_priv->initial_width, fb_width);
+ initial_height = min(vmw_priv->initial_height, fb_height);
+
+ fb_pitch = fb_width * fb_bpp / 8;
+ fb_size = fb_pitch * fb_height;
+ fb_offset = vmw_read(vmw_priv, SVGA_REG_FB_OFFSET);
+
+ info = framebuffer_alloc(sizeof(*par), device);
+ if (!info)
+ return -ENOMEM;
+
+ /*
+ * Par
+ */
+ vmw_priv->fb_info = info;
+ par = info->par;
+ par->vmw_priv = vmw_priv;
+ par->depth = fb_depth;
+ par->bpp = fb_bpp;
+ par->vmalloc = NULL;
+ par->max_width = fb_width;
+ par->max_height = fb_height;
+
+ /*
+ * Create buffers and alloc memory
+ */
+ par->vmalloc = vmalloc(fb_size);
+ if (unlikely(par->vmalloc == NULL)) {
+ ret = -ENOMEM;
+ goto err_free;
+ }
+
+ ret = vmw_fb_create_bo(vmw_priv, fb_size, &par->vmw_bo);
+ if (unlikely(ret != 0))
+ goto err_free;
+
+ ret = ttm_bo_kmap(&par->vmw_bo->base,
+ 0,
+ par->vmw_bo->base.num_pages,
+ &par->map);
+ if (unlikely(ret != 0))
+ goto err_unref;
+ par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &par->bo_iowrite);
+ par->bo_size = fb_size;
+
+ /*
+ * Fixed and var
+ */
+ strcpy(info->fix.id, "svgadrmfb");
+ info->fix.type = FB_TYPE_PACKED_PIXELS;
+ info->fix.visual = FB_VISUAL_TRUECOLOR;
+ info->fix.type_aux = 0;
+ info->fix.xpanstep = 1; /* doing it in hw */
+ info->fix.ypanstep = 1; /* doing it in hw */
+ info->fix.ywrapstep = 0;
+ info->fix.accel = FB_ACCEL_NONE;
+ info->fix.line_length = fb_pitch;
+
+ info->fix.smem_start = 0;
+ info->fix.smem_len = fb_size;
+
+ info->pseudo_palette = par->pseudo_palette;
+ info->screen_base = par->vmalloc;
+ info->screen_size = fb_size;
+
+ info->flags = FBINFO_DEFAULT;
+ info->fbops = &vmw_fb_ops;
+
+ /* 24 depth per default */
+ info->var.red.offset = 16;
+ info->var.green.offset = 8;
+ info->var.blue.offset = 0;
+ info->var.red.length = 8;
+ info->var.green.length = 8;
+ info->var.blue.length = 8;
+ info->var.transp.offset = 0;
+ info->var.transp.length = 0;
+
+ info->var.xres_virtual = fb_width;
+ info->var.yres_virtual = fb_height;
+ info->var.bits_per_pixel = par->bpp;
+ info->var.xoffset = 0;
+ info->var.yoffset = 0;
+ info->var.activate = FB_ACTIVATE_NOW;
+ info->var.height = -1;
+ info->var.width = -1;
+
+ info->var.xres = initial_width;
+ info->var.yres = initial_height;
+
+ /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
+
+ info->apertures = alloc_apertures(1);
+ if (!info->apertures) {
+ ret = -ENOMEM;
+ goto err_aper;
+ }
+ info->apertures->ranges[0].base = vmw_priv->vram_start;
+ info->apertures->ranges[0].size = vmw_priv->vram_size;
+
+ /*
+ * Dirty & Deferred IO
+ */
+ par->dirty.x1 = par->dirty.x2 = 0;
+ par->dirty.y1 = par->dirty.y2 = 0;
+ par->dirty.active = true;
+ spin_lock_init(&par->dirty.lock);
+ info->fbdefio = &vmw_defio;
+ fb_deferred_io_init(info);
+
+ ret = register_framebuffer(info);
+ if (unlikely(ret != 0))
+ goto err_defio;
+
+ return 0;
+
+err_defio:
+ fb_deferred_io_cleanup(info);
+err_aper:
+ ttm_bo_kunmap(&par->map);
+err_unref:
+ ttm_bo_unref((struct ttm_buffer_object **)&par->vmw_bo);
+err_free:
+ vfree(par->vmalloc);
+ framebuffer_release(info);
+ vmw_priv->fb_info = NULL;
+
+ return ret;
+}
+
+int vmw_fb_close(struct vmw_private *vmw_priv)
+{
+ struct fb_info *info;
+ struct vmw_fb_par *par;
+ struct ttm_buffer_object *bo;
+
+ if (!vmw_priv->fb_info)
+ return 0;
+
+ info = vmw_priv->fb_info;
+ par = info->par;
+ bo = &par->vmw_bo->base;
+ par->vmw_bo = NULL;
+
+ /* ??? order */
+ fb_deferred_io_cleanup(info);
+ unregister_framebuffer(info);
+
+ ttm_bo_kunmap(&par->map);
+ ttm_bo_unref(&bo);
+
+ vfree(par->vmalloc);
+ framebuffer_release(info);
+
+ return 0;
+}
+
+int vmw_fb_off(struct vmw_private *vmw_priv)
+{
+ struct fb_info *info;
+ struct vmw_fb_par *par;
+ unsigned long flags;
+
+ if (!vmw_priv->fb_info)
+ return -EINVAL;
+
+ info = vmw_priv->fb_info;
+ par = info->par;
+
+ spin_lock_irqsave(&par->dirty.lock, flags);
+ par->dirty.active = false;
+ spin_unlock_irqrestore(&par->dirty.lock, flags);
+
+ flush_delayed_work(&info->deferred_work);
+
+ par->bo_ptr = NULL;
+ ttm_bo_kunmap(&par->map);
+
+ vmw_dmabuf_unpin(vmw_priv, par->vmw_bo, false);
+
+ return 0;
+}
+
+int vmw_fb_on(struct vmw_private *vmw_priv)
+{
+ struct fb_info *info;
+ struct vmw_fb_par *par;
+ unsigned long flags;
+ bool dummy;
+ int ret;
+
+ if (!vmw_priv->fb_info)
+ return -EINVAL;
+
+ info = vmw_priv->fb_info;
+ par = info->par;
+
+ /* we are already active */
+ if (par->bo_ptr != NULL)
+ return 0;
+
+ /* Make sure that all overlays are stoped when we take over */
+ vmw_overlay_stop_all(vmw_priv);
+
+ ret = vmw_dmabuf_to_start_of_vram(vmw_priv, par->vmw_bo, true, false);
+ if (unlikely(ret != 0)) {
+ DRM_ERROR("could not move buffer to start of VRAM\n");
+ goto err_no_buffer;
+ }
+
+ ret = ttm_bo_kmap(&par->vmw_bo->base,
+ 0,
+ par->vmw_bo->base.num_pages,
+ &par->map);
+ BUG_ON(ret != 0);
+ par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &dummy);
+
+ spin_lock_irqsave(&par->dirty.lock, flags);
+ par->dirty.active = true;
+ spin_unlock_irqrestore(&par->dirty.lock, flags);
+
+err_no_buffer:
+ vmw_fb_set_par(info);
+
+ vmw_fb_dirty_mark(par, 0, 0, info->var.xres, info->var.yres);
+
+ /* If there already was stuff dirty we wont
+ * schedule a new work, so lets do it now */
+ schedule_delayed_work(&info->deferred_work, 0);
+
+ return 0;
+}