From d904ef9b00a4473af16766e99f17bdbb5f0fde65 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Tue, 17 Nov 2009 06:29:46 +1000 Subject: drm/radeon/kms: add support to atom parser for FB read/write 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 --- drivers/gpu/drm/radeon/atom.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/gpu/drm/radeon/atom.c') diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c index d67c42555ab..85abc0850e7 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)++; -- cgit v1.2.3 From 5801ead6bd6bddf5505d6eab55f84d8ee8106cd8 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 24 Nov 2009 13:32:59 -0500 Subject: drm/radeon/kms: add support for DP modesetting Signed-off-by: Alex Deucher Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/atom.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'drivers/gpu/drm/radeon/atom.c') diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c index 85abc0850e7..6578d19dff9 100644 --- a/drivers/gpu/drm/radeon/atom.c +++ b/drivers/gpu/drm/radeon/atom.c @@ -1214,3 +1214,28 @@ 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; + if (usage_bytes == 0) + usage_bytes = 20 * 1024; + /* allocate some scratch memory */ + ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL); + if (!ctx->scratch) + return -ENOMEM; + return 0; +} -- cgit v1.2.3