From: Dave Airlie <airl...@redhat.com>
FB read/write really doesn't need to access the actual VRAM, we
can just use a scratch area. This is required for using atom displayport
calls later.
Signed-off-by: Dave Airlie <airl...@redhat.com>
---
drivers/gpu/drm/radeon/atom.c | 32 ++++++++++++++++++++++++++++----
drivers/gpu/drm/radeon/atom.h | 2 ++
drivers/gpu/drm/radeon/radeon_device.c | 2 ++
3 files changed, 32 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c
index d67c425..bbb2bc3 100644
--- a/drivers/gpu/drm/radeon/atom.c
+++ b/drivers/gpu/drm/radeon/atom.c
@@ -263,10 +263,10 @@ static uint32_t atom_get_src_int(atom_exec_context *ctx,
uint8_t attr,
case ATOM_ARG_FB:
idx = U8(*ptr);
(*ptr)++;
+ val = gctx->scratch[((gctx->fb_base + idx) / 4)];
if (print)
DEBUG("FB[0x%02X]", idx);
- printk(KERN_INFO "FB access is not implemented.\n");
- return 0;
+ break;
case ATOM_ARG_IMM:
switch (align) {
case ATOM_SRC_DWORD:
@@ -488,9 +488,9 @@ static void atom_put_dst(atom_exec_context *ctx, int arg,
uint8_t attr,
case ATOM_ARG_FB:
idx = U8(*ptr);
(*ptr)++;
+ gctx->scratch[((gctx->fb_base + idx) / 4)] = val;
DEBUG("FB[0x%02X]", idx);
- printk(KERN_INFO "FB access is not implemented.\n");
- return;
+ break;
case ATOM_ARG_PLL:
idx = U8(*ptr);
(*ptr)++;
@@ -1214,3 +1214,27 @@ void atom_parse_cmd_header(struct atom_context *ctx, int
index, uint8_t * frev,
*crev = CU8(idx + 3);
return;
}
+
+int atom_allocate_fb_scratch(struct atom_context *ctx)
+{
+ int index = GetIndexIntoMasterTable(DATA, VRAM_UsageByFirmware);
+ uint16_t data_offset;
+ int usage_bytes;
+ struct _ATOM_VRAM_USAGE_BY_FIRMWARE *firmware_usage;
+
+ atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset);
+
+ firmware_usage = (struct _ATOM_VRAM_USAGE_BY_FIRMWARE *)(ctx->bios +
data_offset);
+
+ DRM_DEBUG("atom firmware requested %08x %dkb\n",
+
firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware,
+
firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb);
+
+ usage_bytes =
firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb * 1024;
+ /* allocate some scratch memory */
+
+ ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL);
+ if (!ctx->scratch)
+ return -ENOMEM;
+ return 0;
+}
diff --git a/drivers/gpu/drm/radeon/atom.h b/drivers/gpu/drm/radeon/atom.h
index e6eb38f..6671848 100644
--- a/drivers/gpu/drm/radeon/atom.h
+++ b/drivers/gpu/drm/radeon/atom.h
@@ -132,6 +132,7 @@ struct atom_context {
uint8_t shift;
int cs_equal, cs_above;
int io_mode;
+ uint32_t *scratch;
};
extern int atom_debug;
@@ -142,6 +143,7 @@ int atom_asic_init(struct atom_context *);
void atom_destroy(struct atom_context *);
void atom_parse_data_header(struct atom_context *ctx, int index, uint16_t
*size, uint8_t *frev, uint8_t *crev, uint16_t *data_start);
void atom_parse_cmd_header(struct atom_context *ctx, int index, uint8_t *frev,
uint8_t *crev);
+int atom_allocate_fb_scratch(struct atom_context *ctx);
#include "atom-types.h"
#include "atombios.h"
#include "ObjectID.h"
diff --git a/drivers/gpu/drm/radeon/radeon_device.c
b/drivers/gpu/drm/radeon/radeon_device.c
index 0674d22..e4b3c77 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -462,11 +462,13 @@ int radeon_atombios_init(struct radeon_device *rdev)
rdev->mode_info.atom_context = atom_parse(atom_card_info, rdev->bios);
radeon_atom_initialize_bios_scratch_regs(rdev->ddev);
+ atom_allocate_fb_scratch(rdev->mode_info.atom_context);
return 0;
}
void radeon_atombios_fini(struct radeon_device *rdev)
{
+ kfree(rdev->mode_info.atom_context->scratch);
kfree(rdev->mode_info.atom_context);
kfree(rdev->mode_info.atom_card_info);
}
--
1.6.5.2
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