summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/radeon/radeon_bios.c
diff options
context:
space:
mode:
authorDave Airlie <airlied@redhat.com>2010-03-01 09:22:38 +0300
committerDave Airlie <airlied@redhat.com>2010-03-01 09:22:38 +0300
commit1c62233508ef7104f8a78e571fdf5c72d0dc0200 (patch)
tree31e19cbff5c1080d3015d20b24dd43ee95f4ed8c /drivers/gpu/drm/radeon/radeon_bios.c
parent6d9c13513661c1991bf5f4e6e1363c721292d819 (diff)
parent6a9ee8af344e3bd7dbd61e67037096cdf7f83289 (diff)
downloadlinux-1c62233508ef7104f8a78e571fdf5c72d0dc0200.tar.xz
Merge branch 'gpu-switcher' of /ssd/git//linux-2.6 into drm-next-stage
* 'gpu-switcher' of /ssd/git//linux-2.6: vga_switcheroo: initial implementation (v15) fb: for framebuffer handover don't exit the loop early. Conflicts: drivers/gpu/drm/i915/i915_dma.c drivers/gpu/drm/radeon/Makefile drivers/gpu/drm/radeon/radeon.h
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_bios.c')
-rw-r--r--drivers/gpu/drm/radeon/radeon_bios.c44
1 files changed, 39 insertions, 5 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_bios.c b/drivers/gpu/drm/radeon/radeon_bios.c
index 26856ed8d972..557240460526 100644
--- a/drivers/gpu/drm/radeon/radeon_bios.c
+++ b/drivers/gpu/drm/radeon/radeon_bios.c
@@ -30,6 +30,7 @@
#include "radeon.h"
#include "atom.h"
+#include <linux/vga_switcheroo.h>
/*
* BIOS.
*/
@@ -62,7 +63,7 @@ static bool igp_read_bios_from_vram(struct radeon_device *rdev)
iounmap(bios);
return false;
}
- memcpy(rdev->bios, bios, size);
+ memcpy_fromio(rdev->bios, bios, size);
iounmap(bios);
return true;
}
@@ -93,6 +94,38 @@ static bool radeon_read_bios(struct radeon_device *rdev)
return true;
}
+/* ATRM is used to get the BIOS on the discrete cards in
+ * dual-gpu systems.
+ */
+static bool radeon_atrm_get_bios(struct radeon_device *rdev)
+{
+ int ret;
+ int size = 64 * 1024;
+ int i;
+
+ if (!radeon_atrm_supported(rdev->pdev))
+ return false;
+
+ rdev->bios = kmalloc(size, GFP_KERNEL);
+ if (!rdev->bios) {
+ DRM_ERROR("Unable to allocate bios\n");
+ return false;
+ }
+
+ for (i = 0; i < size / ATRM_BIOS_PAGE; i++) {
+ ret = radeon_atrm_get_bios_chunk(rdev->bios,
+ (i * ATRM_BIOS_PAGE),
+ ATRM_BIOS_PAGE);
+ if (ret <= 0)
+ break;
+ }
+
+ if (i == 0 || rdev->bios[0] != 0x55 || rdev->bios[1] != 0xaa) {
+ kfree(rdev->bios);
+ return false;
+ }
+ return true;
+}
static bool r700_read_disabled_bios(struct radeon_device *rdev)
{
uint32_t viph_control;
@@ -388,16 +421,16 @@ static bool radeon_read_disabled_bios(struct radeon_device *rdev)
return legacy_read_disabled_bios(rdev);
}
+
bool radeon_get_bios(struct radeon_device *rdev)
{
bool r;
uint16_t tmp;
- if (rdev->flags & RADEON_IS_IGP) {
+ r = radeon_atrm_get_bios(rdev);
+ if (r == false)
r = igp_read_bios_from_vram(rdev);
- if (r == false)
- r = radeon_read_bios(rdev);
- } else
+ if (r == false)
r = radeon_read_bios(rdev);
if (r == false) {
r = radeon_read_disabled_bios(rdev);
@@ -408,6 +441,7 @@ bool radeon_get_bios(struct radeon_device *rdev)
return false;
}
if (rdev->bios[0] != 0x55 || rdev->bios[1] != 0xaa) {
+ printk("BIOS signature incorrect %x %x\n", rdev->bios[0], rdev->bios[1]);
goto free_bios;
}