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 <airlied@redhat.com>
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@ -263,10 +263,10 @@ static uint32_t atom_get_src_int(atom_exec_context *ctx, uint8_t attr,
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case ATOM_ARG_FB:
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idx = U8(*ptr);
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(*ptr)++;
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val = gctx->scratch[((gctx->fb_base + idx) / 4)];
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if (print)
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DEBUG("FB[0x%02X]", idx);
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printk(KERN_INFO "FB access is not implemented.\n");
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return 0;
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break;
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case ATOM_ARG_IMM:
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switch (align) {
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case ATOM_SRC_DWORD:
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@ -488,9 +488,9 @@ static void atom_put_dst(atom_exec_context *ctx, int arg, uint8_t attr,
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case ATOM_ARG_FB:
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idx = U8(*ptr);
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(*ptr)++;
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gctx->scratch[((gctx->fb_base + idx) / 4)] = val;
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DEBUG("FB[0x%02X]", idx);
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printk(KERN_INFO "FB access is not implemented.\n");
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return;
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break;
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case ATOM_ARG_PLL:
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idx = U8(*ptr);
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(*ptr)++;
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@ -132,6 +132,7 @@ struct atom_context {
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uint8_t shift;
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int cs_equal, cs_above;
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int io_mode;
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uint32_t *scratch;
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};
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extern int atom_debug;
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@ -142,6 +143,7 @@ int atom_asic_init(struct atom_context *);
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void atom_destroy(struct atom_context *);
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void atom_parse_data_header(struct atom_context *ctx, int index, uint16_t *size, uint8_t *frev, uint8_t *crev, uint16_t *data_start);
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void atom_parse_cmd_header(struct atom_context *ctx, int index, uint8_t *frev, uint8_t *crev);
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int atom_allocate_fb_scratch(struct atom_context *ctx);
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#include "atom-types.h"
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#include "atombios.h"
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#include "ObjectID.h"
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@ -481,11 +481,13 @@ int radeon_atombios_init(struct radeon_device *rdev)
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rdev->mode_info.atom_context = atom_parse(atom_card_info, rdev->bios);
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radeon_atom_initialize_bios_scratch_regs(rdev->ddev);
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atom_allocate_fb_scratch(rdev->mode_info.atom_context);
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return 0;
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}
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void radeon_atombios_fini(struct radeon_device *rdev)
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{
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kfree(rdev->mode_info.atom_context->scratch);
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kfree(rdev->mode_info.atom_context);
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kfree(rdev->mode_info.atom_card_info);
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}
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