1c94984254
While developing MST support I noticed I often got the wrong data back from a transaction, in a racy fashion. I noticed the scratch space wasn't locked against concurrent users. Based on a patch by Alex, but I've made it a bit more obvious when things are locked. Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
162 lines
4.9 KiB
C
162 lines
4.9 KiB
C
/*
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* Copyright 2008 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Author: Stanislaw Skowronek
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*/
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#ifndef ATOM_H
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#define ATOM_H
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#include <linux/types.h>
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#include <drm/drmP.h>
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#define ATOM_BIOS_MAGIC 0xAA55
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#define ATOM_ATI_MAGIC_PTR 0x30
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#define ATOM_ATI_MAGIC " 761295520"
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#define ATOM_ROM_TABLE_PTR 0x48
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#define ATOM_ROM_MAGIC "ATOM"
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#define ATOM_ROM_MAGIC_PTR 4
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#define ATOM_ROM_MSG_PTR 0x10
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#define ATOM_ROM_CMD_PTR 0x1E
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#define ATOM_ROM_DATA_PTR 0x20
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#define ATOM_CMD_INIT 0
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#define ATOM_CMD_SETSCLK 0x0A
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#define ATOM_CMD_SETMCLK 0x0B
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#define ATOM_CMD_SETPCLK 0x0C
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#define ATOM_CMD_SPDFANCNTL 0x39
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#define ATOM_DATA_FWI_PTR 0xC
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#define ATOM_DATA_IIO_PTR 0x32
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#define ATOM_FWI_DEFSCLK_PTR 8
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#define ATOM_FWI_DEFMCLK_PTR 0xC
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#define ATOM_FWI_MAXSCLK_PTR 0x24
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#define ATOM_FWI_MAXMCLK_PTR 0x28
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#define ATOM_CT_SIZE_PTR 0
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#define ATOM_CT_WS_PTR 4
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#define ATOM_CT_PS_PTR 5
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#define ATOM_CT_PS_MASK 0x7F
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#define ATOM_CT_CODE_PTR 6
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#define ATOM_OP_CNT 123
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#define ATOM_OP_EOT 91
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#define ATOM_CASE_MAGIC 0x63
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#define ATOM_CASE_END 0x5A5A
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#define ATOM_ARG_REG 0
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#define ATOM_ARG_PS 1
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#define ATOM_ARG_WS 2
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#define ATOM_ARG_FB 3
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#define ATOM_ARG_ID 4
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#define ATOM_ARG_IMM 5
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#define ATOM_ARG_PLL 6
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#define ATOM_ARG_MC 7
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#define ATOM_SRC_DWORD 0
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#define ATOM_SRC_WORD0 1
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#define ATOM_SRC_WORD8 2
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#define ATOM_SRC_WORD16 3
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#define ATOM_SRC_BYTE0 4
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#define ATOM_SRC_BYTE8 5
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#define ATOM_SRC_BYTE16 6
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#define ATOM_SRC_BYTE24 7
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#define ATOM_WS_QUOTIENT 0x40
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#define ATOM_WS_REMAINDER 0x41
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#define ATOM_WS_DATAPTR 0x42
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#define ATOM_WS_SHIFT 0x43
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#define ATOM_WS_OR_MASK 0x44
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#define ATOM_WS_AND_MASK 0x45
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#define ATOM_WS_FB_WINDOW 0x46
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#define ATOM_WS_ATTRIBUTES 0x47
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#define ATOM_WS_REGPTR 0x48
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#define ATOM_IIO_NOP 0
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#define ATOM_IIO_START 1
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#define ATOM_IIO_READ 2
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#define ATOM_IIO_WRITE 3
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#define ATOM_IIO_CLEAR 4
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#define ATOM_IIO_SET 5
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#define ATOM_IIO_MOVE_INDEX 6
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#define ATOM_IIO_MOVE_ATTR 7
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#define ATOM_IIO_MOVE_DATA 8
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#define ATOM_IIO_END 9
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#define ATOM_IO_MM 0
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#define ATOM_IO_PCI 1
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#define ATOM_IO_SYSIO 2
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#define ATOM_IO_IIO 0x80
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struct card_info {
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struct drm_device *dev;
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void (* reg_write)(struct card_info *, uint32_t, uint32_t); /* filled by driver */
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uint32_t (* reg_read)(struct card_info *, uint32_t); /* filled by driver */
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void (* ioreg_write)(struct card_info *, uint32_t, uint32_t); /* filled by driver */
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uint32_t (* ioreg_read)(struct card_info *, uint32_t); /* filled by driver */
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void (* mc_write)(struct card_info *, uint32_t, uint32_t); /* filled by driver */
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uint32_t (* mc_read)(struct card_info *, uint32_t); /* filled by driver */
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void (* pll_write)(struct card_info *, uint32_t, uint32_t); /* filled by driver */
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uint32_t (* pll_read)(struct card_info *, uint32_t); /* filled by driver */
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};
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struct atom_context {
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struct card_info *card;
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struct mutex mutex;
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struct mutex scratch_mutex;
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void *bios;
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uint32_t cmd_table, data_table;
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uint16_t *iio;
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uint16_t data_block;
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uint32_t fb_base;
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uint32_t divmul[2];
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uint16_t io_attr;
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uint16_t reg_block;
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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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int scratch_size_bytes;
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};
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extern int atom_debug;
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struct atom_context *atom_parse(struct card_info *, void *);
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int atom_execute_table(struct atom_context *, int, uint32_t *);
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int atom_execute_table_scratch_unlocked(struct atom_context *, int, uint32_t *);
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int atom_asic_init(struct atom_context *);
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void atom_destroy(struct atom_context *);
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bool atom_parse_data_header(struct atom_context *ctx, int index, uint16_t *size,
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uint8_t *frev, uint8_t *crev, uint16_t *data_start);
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bool atom_parse_cmd_header(struct atom_context *ctx, int index,
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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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#endif
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