This allows both fbdev and kms to work on older hardware
that does not have the display topology cap.
There are also some other misc improvments related to handling
older hardware version of SVGA. The current cut of is if the
pitchlock cap is not set.
Signed-off-by: Jakob Bornecrantz <ja...@vmware.com>
---
drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 9 +++++
drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 2 +
drivers/gpu/drm/vmwgfx/vmwgfx_fb.c | 45 +++++++++++++----------
drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c | 18 +++++++++
drivers/gpu/drm/vmwgfx/vmwgfx_kms.c | 25 +++++++------
drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c | 64 +++++++++++++++++++++++++++-------
6 files changed, 119 insertions(+), 44 deletions(-)
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index a6e8f68..5268af2 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -318,6 +318,15 @@ static int vmw_driver_load(struct drm_device *dev,
unsigned long chipset)
goto out_err3;
}
+ /* need mmio memory to check for fifo pitchlock cap */
+ if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) &&
+ !(dev_priv->capabilities & SVGA_CAP_PITCHLOCK) &&
+ !vmw_fifo_have_pitchlock(dev_priv)) {
+ ret = -ENOSYS;
+ DRM_ERROR("Hardware has no pitchlock\n");
+ goto out_err4;
+ }
+
dev_priv->tdev = ttm_object_device_init
(dev_priv->mem_global_ref.object, 12);
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index 135be96..3e03cb7 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -178,6 +178,7 @@ struct vmw_private {
uint32_t vga_red_mask;
uint32_t vga_blue_mask;
uint32_t vga_green_mask;
+ uint32_t vga_pitchlock;
/*
* Framebuffer info.
@@ -392,6 +393,7 @@ extern int vmw_fifo_send_fence(struct vmw_private *dev_priv,
extern void vmw_fifo_ping_host(struct vmw_private *dev_priv, uint32_t reason);
extern int vmw_fifo_mmap(struct file *filp, struct vm_area_struct *vma);
extern bool vmw_fifo_have_3d(struct vmw_private *dev_priv);
+extern bool vmw_fifo_have_pitchlock(struct vmw_private *dev_priv);
/**
* TTM glue - vmwgfx_ttm_glue.c
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
index 9822ee6..994ad2c 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
@@ -135,16 +135,14 @@ static int vmw_fb_check_var(struct fb_var_screeninfo *var,
return -EINVAL;
}
- /* without multimon its hard to resize */
- if (!(vmw_priv->capabilities & SVGA_CAP_MULTIMON) &&
- (var->xres != par->max_width ||
- var->yres != par->max_height)) {
- DRM_ERROR("Tried to resize, but we don't have multimon\n");
+ 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->xres > par->max_width ||
- var->yres > par->max_height) {
+ 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;
}
@@ -157,8 +155,7 @@ 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;
- if (vmw_priv->capabilities & SVGA_CAP_MULTIMON) {
- vmw_write(vmw_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 1);
+ if (vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) {
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, 0);
@@ -177,8 +174,6 @@ static int vmw_fb_set_par(struct fb_info *info)
vmw_write(vmw_priv, SVGA_REG_BLUE_MASK, 0x000000ff);
/* 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);
@@ -187,12 +182,27 @@ static int vmw_fb_set_par(struct fb_info *info)
vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, info->var.yres);
vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
} else {
+ vmw_write(vmw_priv, SVGA_REG_ENABLE, 0);
+ if (vmw_fifo_have_pitchlock(vmw_priv))
+ iowrite32(info->fix.line_length, vmw_priv->mmio_virt +
SVGA_FIFO_PITCHLOCK);
+ if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
+ vmw_write(vmw_priv, SVGA_REG_PITCHLOCK,
info->fix.line_length);
+
vmw_write(vmw_priv, SVGA_REG_WIDTH, info->var.xres);
vmw_write(vmw_priv, SVGA_REG_HEIGHT, info->var.yres);
-
- /* TODO check if pitch and offset changes */
+ vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, par->bpp);
+ vmw_write(vmw_priv, SVGA_REG_DEPTH, par->depth);
+ vmw_write(vmw_priv, SVGA_REG_RED_MASK, 0x00ff0000);
+ vmw_write(vmw_priv, SVGA_REG_GREEN_MASK, 0x0000ff00);
+ vmw_write(vmw_priv, SVGA_REG_BLUE_MASK, 0x000000ff);
+ vmw_write(vmw_priv, SVGA_REG_ENABLE, 1);
}
+ /* This is really helpfull as if this is fails the user
+ * can probably not see anything on the screen.
+ */
+ WARN_ON(vmw_read(vmw_priv, SVGA_REG_FB_OFFSET) != 0);
+
return 0;
}
@@ -440,13 +450,8 @@ int vmw_fb_init(struct vmw_private *vmw_priv)
fb_bbp = 32;
fb_depth = 24;
- if (vmw_priv->capabilities & SVGA_CAP_MULTIMON) {
- fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
- fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
- } else {
- fb_width = min(vmw_priv->fb_max_width, initial_width);
- fb_height = min(vmw_priv->fb_max_height, initial_height);
- }
+ fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
+ fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
initial_width = min(fb_width, initial_width);
initial_height = min(fb_height, initial_height);
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
index 4157547..c9560a0 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
@@ -34,6 +34,9 @@ bool vmw_fifo_have_3d(struct vmw_private *dev_priv)
__le32 __iomem *fifo_mem = dev_priv->mmio_virt;
uint32_t fifo_min, hwversion;
+ if (!(dev_priv->capabilities & SVGA_CAP_EXTENDED_FIFO))
+ return false;
+
fifo_min = ioread32(fifo_mem + SVGA_FIFO_MIN);
if (fifo_min <= SVGA_FIFO_3D_HWVERSION * sizeof(unsigned int))
return false;
@@ -48,6 +51,21 @@ bool vmw_fifo_have_3d(struct vmw_private *dev_priv)
return true;
}
+bool vmw_fifo_have_pitchlock(struct vmw_private *dev_priv)
+{
+ __le32 __iomem *fifo_mem = dev_priv->mmio_virt;
+ uint32_t caps;
+
+ if (!(dev_priv->capabilities & SVGA_CAP_EXTENDED_FIFO))
+ return false;
+
+ caps = ioread32(fifo_mem + SVGA_FIFO_CAPABILITIES);
+ if (caps & SVGA_FIFO_CAP_PITCHLOCK)
+ return true;
+
+ return false;
+}
+
int vmw_fifo_init(struct vmw_private *dev_priv, struct vmw_fifo_state *fifo)
{
__le32 __iomem *fifo_mem = dev_priv->mmio_virt;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index eeba6d1..ab8cf4e 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -596,12 +596,12 @@ static int vmw_framebuffer_dmabuf_pin(struct
vmw_framebuffer *vfb)
vmw_framebuffer_to_vfbd(&vfb->base);
int ret;
+
vmw_overlay_pause_all(dev_priv);
ret = vmw_dmabuf_to_start_of_vram(dev_priv, vfbd->buffer);
- if (dev_priv->capabilities & SVGA_CAP_MULTIMON) {
- vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 1);
+ if (dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) {
vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, 0);
vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, true);
vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, 0);
@@ -610,7 +610,6 @@ static int vmw_framebuffer_dmabuf_pin(struct
vmw_framebuffer *vfb)
vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, 0);
vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
- vmw_write(dev_priv, SVGA_REG_ENABLE, 1);
vmw_write(dev_priv, SVGA_REG_WIDTH, vfb->base.width);
vmw_write(dev_priv, SVGA_REG_HEIGHT, vfb->base.height);
vmw_write(dev_priv, SVGA_REG_BITS_PER_PIXEL,
vfb->base.bits_per_pixel);
@@ -618,8 +617,8 @@ static int vmw_framebuffer_dmabuf_pin(struct
vmw_framebuffer *vfb)
vmw_write(dev_priv, SVGA_REG_RED_MASK, 0x00ff0000);
vmw_write(dev_priv, SVGA_REG_GREEN_MASK, 0x0000ff00);
vmw_write(dev_priv, SVGA_REG_BLUE_MASK, 0x000000ff);
- } else
- WARN_ON(true);
+ vmw_write(dev_priv, SVGA_REG_ENABLE, 1);
+ } /* ldu code takes care of !DISPLAY_TOPOLOGY case */
vmw_overlay_resume_all(dev_priv);
@@ -668,7 +667,7 @@ int vmw_kms_new_framebuffer_dmabuf(struct vmw_private
*dev_priv,
/* XXX get the first 3 from the surface info */
vfbd->base.base.bits_per_pixel = 32;
- vfbd->base.base.pitch = width * 32 / 4;
+ vfbd->base.base.pitch = width * vfbd->base.base.bits_per_pixel / 8;
vfbd->base.base.depth = 24;
vfbd->base.base.width = width;
vfbd->base.base.height = height;
@@ -839,8 +838,7 @@ int vmw_kms_save_vga(struct vmw_private *vmw_priv)
* of 0x0, this stops the UI from resizing when we
* change the framebuffer size
*/
- if (vmw_priv->capabilities & SVGA_CAP_MULTIMON) {
- vmw_write(vmw_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 1);
+ if (vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) {
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, 0);
@@ -858,6 +856,10 @@ int vmw_kms_save_vga(struct vmw_private *vmw_priv)
vmw_priv->vga_red_mask = vmw_read(vmw_priv, SVGA_REG_RED_MASK);
vmw_priv->vga_green_mask = vmw_read(vmw_priv, SVGA_REG_GREEN_MASK);
vmw_priv->vga_blue_mask = vmw_read(vmw_priv, SVGA_REG_BLUE_MASK);
+ if (vmw_fifo_have_pitchlock(vmw_priv))
+ vmw_priv->vga_pitchlock = ioread32(vmw_priv->mmio_virt +
SVGA_FIFO_PITCHLOCK);
+ else if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
+ vmw_priv->vga_pitchlock = vmw_read(vmw_priv,
SVGA_REG_PITCHLOCK);
return 0;
}
@@ -872,9 +874,10 @@ int vmw_kms_restore_vga(struct vmw_private *vmw_priv)
vmw_write(vmw_priv, SVGA_REG_RED_MASK, vmw_priv->vga_red_mask);
vmw_write(vmw_priv, SVGA_REG_GREEN_MASK, vmw_priv->vga_green_mask);
vmw_write(vmw_priv, SVGA_REG_BLUE_MASK, vmw_priv->vga_blue_mask);
-
- /* TODO check for multimon */
- vmw_write(vmw_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 0);
+ if (vmw_fifo_have_pitchlock(vmw_priv))
+ iowrite32(vmw_priv->vga_pitchlock, vmw_priv->mmio_virt +
SVGA_FIFO_PITCHLOCK);
+ else if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
+ vmw_write(vmw_priv, SVGA_REG_PITCHLOCK,
vmw_priv->vga_pitchlock);
return 0;
}
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
index 9089159..a093b7e 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
@@ -38,6 +38,7 @@ struct vmw_legacy_display {
struct list_head active;
unsigned num_active;
+ unsigned last_num_active;
struct vmw_framebuffer *fb;
};
@@ -88,12 +89,43 @@ static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
{
struct vmw_legacy_display *lds = dev_priv->ldu_priv;
struct vmw_legacy_display_unit *entry;
- struct drm_crtc *crtc;
+ struct drm_crtc *crtc = NULL;
int i = 0;
- /* to stop the screen from changing size on resize */
- vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 0);
- for (i = 0; i < lds->num_active; i++) {
+ /* If there is no display topology the host just assumes
+ * that the guest will set the same layout as the host.
+ */
+ if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
+ int w = 0, h = 0;
+ list_for_each_entry(entry, &lds->active, active) {
+ crtc = &entry->base.crtc;
+ w = max(w, crtc->x + crtc->mode.hdisplay);
+ h = max(h, crtc->y + crtc->mode.vdisplay);
+ i++;
+ }
+
+ if (crtc == NULL)
+ return 0;
+
+ vmw_write(dev_priv, SVGA_REG_ENABLE, 0);
+ if (vmw_fifo_have_pitchlock(dev_priv))
+ iowrite32(crtc->fb->pitch, dev_priv->mmio_virt +
SVGA_FIFO_PITCHLOCK);
+ if (dev_priv->capabilities & SVGA_CAP_PITCHLOCK)
+ vmw_write(dev_priv, SVGA_REG_PITCHLOCK,
crtc->fb->pitch);
+
+ vmw_write(dev_priv, SVGA_REG_WIDTH, w);
+ vmw_write(dev_priv, SVGA_REG_HEIGHT, h);
+ vmw_write(dev_priv, SVGA_REG_BITS_PER_PIXEL,
crtc->fb->bits_per_pixel);
+ vmw_write(dev_priv, SVGA_REG_DEPTH, crtc->fb->depth);
+ vmw_write(dev_priv, SVGA_REG_RED_MASK, 0x00ff0000);
+ vmw_write(dev_priv, SVGA_REG_GREEN_MASK, 0x0000ff00);
+ vmw_write(dev_priv, SVGA_REG_BLUE_MASK, 0x000000ff);
+ vmw_write(dev_priv, SVGA_REG_ENABLE, 1);
+
+ return 0;
+ }
+
+ for (i = 0; i < lds->last_num_active; i++) {
vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, 0);
@@ -103,8 +135,6 @@ static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
}
- /* Now set the mode */
- vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, lds->num_active);
i = 0;
list_for_each_entry(entry, &lds->active, active) {
crtc = &entry->base.crtc;
@@ -120,6 +150,10 @@ static int vmw_ldu_commit_list(struct vmw_private
*dev_priv)
i++;
}
+ BUG_ON(i != lds->num_active);
+
+ lds->last_num_active = lds->num_active;
+
return 0;
}
@@ -487,18 +521,22 @@ int vmw_kms_init_legacy_display_system(struct vmw_private
*dev_priv)
INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
dev_priv->ldu_priv->num_active = 0;
+ dev_priv->ldu_priv->last_num_active = 0;
dev_priv->ldu_priv->fb = NULL;
drm_mode_create_dirty_info_property(dev_priv->dev);
vmw_ldu_init(dev_priv, 0);
- vmw_ldu_init(dev_priv, 1);
- vmw_ldu_init(dev_priv, 2);
- vmw_ldu_init(dev_priv, 3);
- vmw_ldu_init(dev_priv, 4);
- vmw_ldu_init(dev_priv, 5);
- vmw_ldu_init(dev_priv, 6);
- vmw_ldu_init(dev_priv, 7);
+ /* for old hardware without multimon only enable one display */
+ if (dev_priv->capabilities & SVGA_CAP_MULTIMON) {
+ vmw_ldu_init(dev_priv, 1);
+ vmw_ldu_init(dev_priv, 2);
+ vmw_ldu_init(dev_priv, 3);
+ vmw_ldu_init(dev_priv, 4);
+ vmw_ldu_init(dev_priv, 5);
+ vmw_ldu_init(dev_priv, 6);
+ vmw_ldu_init(dev_priv, 7);
+ }
return 0;
}
--
1.6.0.4
------------------------------------------------------------------------------
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