mirror of https://gitee.com/openkylin/linux.git
1097 lines
27 KiB
C
1097 lines
27 KiB
C
/*
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* Copyright 2004 The Unichrome Project. All Rights Reserved.
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* Copyright 2005 Thomas Hellstrom. All Rights Reserved.
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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, sub license,
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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 (including the
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* next paragraph) shall be included in all copies or substantial portions
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* 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 NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHOR(S), AND/OR THE COPYRIGHT HOLDER(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 OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Author: Thomas Hellstrom 2004, 2005.
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* This code was written using docs obtained under NDA from VIA Inc.
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*
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* Don't run this code directly on an AGP buffer. Due to cache problems it will
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* be very slow.
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*/
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#include "via_3d_reg.h"
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#include "drmP.h"
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#include "drm.h"
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#include "via_drm.h"
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#include "via_verifier.h"
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#include "via_drv.h"
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typedef enum {
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state_command,
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state_header2,
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state_header1,
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state_vheader5,
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state_vheader6,
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state_error
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} verifier_state_t;
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typedef enum {
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no_check = 0,
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check_for_header2,
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check_for_header1,
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check_for_header2_err,
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check_for_header1_err,
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check_for_fire,
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check_z_buffer_addr0,
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check_z_buffer_addr1,
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check_z_buffer_addr_mode,
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check_destination_addr0,
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check_destination_addr1,
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check_destination_addr_mode,
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check_for_dummy,
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check_for_dd,
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check_texture_addr0,
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check_texture_addr1,
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check_texture_addr2,
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check_texture_addr3,
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check_texture_addr4,
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check_texture_addr5,
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check_texture_addr6,
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check_texture_addr7,
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check_texture_addr8,
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check_texture_addr_mode,
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check_for_vertex_count,
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check_number_texunits,
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forbidden_command
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} hazard_t;
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/*
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* Associates each hazard above with a possible multi-command
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* sequence. For example an address that is split over multiple
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* commands and that needs to be checked at the first command
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* that does not include any part of the address.
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*/
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static drm_via_sequence_t seqs[] = {
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no_sequence,
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no_sequence,
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no_sequence,
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no_sequence,
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no_sequence,
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no_sequence,
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z_address,
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z_address,
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z_address,
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dest_address,
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dest_address,
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dest_address,
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no_sequence,
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no_sequence,
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tex_address,
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tex_address,
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tex_address,
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tex_address,
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tex_address,
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tex_address,
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tex_address,
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tex_address,
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tex_address,
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tex_address,
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no_sequence
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};
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typedef struct {
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unsigned int code;
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hazard_t hz;
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} hz_init_t;
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static hz_init_t init_table1[] = {
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{0xf2, check_for_header2_err},
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{0xf0, check_for_header1_err},
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{0xee, check_for_fire},
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{0xcc, check_for_dummy},
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{0xdd, check_for_dd},
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{0x00, no_check},
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{0x10, check_z_buffer_addr0},
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{0x11, check_z_buffer_addr1},
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{0x12, check_z_buffer_addr_mode},
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{0x13, no_check},
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{0x14, no_check},
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{0x15, no_check},
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{0x23, no_check},
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{0x24, no_check},
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{0x33, no_check},
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{0x34, no_check},
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{0x35, no_check},
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{0x36, no_check},
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{0x37, no_check},
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{0x38, no_check},
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{0x39, no_check},
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{0x3A, no_check},
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{0x3B, no_check},
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{0x3C, no_check},
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{0x3D, no_check},
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{0x3E, no_check},
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{0x40, check_destination_addr0},
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{0x41, check_destination_addr1},
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{0x42, check_destination_addr_mode},
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{0x43, no_check},
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{0x44, no_check},
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{0x50, no_check},
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{0x51, no_check},
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{0x52, no_check},
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{0x53, no_check},
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{0x54, no_check},
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{0x55, no_check},
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{0x56, no_check},
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{0x57, no_check},
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{0x58, no_check},
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{0x70, no_check},
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{0x71, no_check},
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{0x78, no_check},
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{0x79, no_check},
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{0x7A, no_check},
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{0x7B, no_check},
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{0x7C, no_check},
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{0x7D, check_for_vertex_count}
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};
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static hz_init_t init_table2[] = {
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{0xf2, check_for_header2_err},
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{0xf0, check_for_header1_err},
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{0xee, check_for_fire},
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{0xcc, check_for_dummy},
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{0x00, check_texture_addr0},
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{0x01, check_texture_addr0},
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{0x02, check_texture_addr0},
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{0x03, check_texture_addr0},
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{0x04, check_texture_addr0},
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{0x05, check_texture_addr0},
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{0x06, check_texture_addr0},
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{0x07, check_texture_addr0},
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{0x08, check_texture_addr0},
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{0x09, check_texture_addr0},
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{0x20, check_texture_addr1},
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{0x21, check_texture_addr1},
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{0x22, check_texture_addr1},
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{0x23, check_texture_addr4},
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{0x2B, check_texture_addr3},
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{0x2C, check_texture_addr3},
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{0x2D, check_texture_addr3},
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{0x2E, check_texture_addr3},
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{0x2F, check_texture_addr3},
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{0x30, check_texture_addr3},
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{0x31, check_texture_addr3},
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{0x32, check_texture_addr3},
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{0x33, check_texture_addr3},
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{0x34, check_texture_addr3},
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{0x4B, check_texture_addr5},
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{0x4C, check_texture_addr6},
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{0x51, check_texture_addr7},
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{0x52, check_texture_addr8},
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{0x77, check_texture_addr2},
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{0x78, no_check},
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{0x79, no_check},
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{0x7A, no_check},
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{0x7B, check_texture_addr_mode},
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{0x7C, no_check},
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{0x7D, no_check},
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{0x7E, no_check},
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{0x7F, no_check},
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{0x80, no_check},
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{0x81, no_check},
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{0x82, no_check},
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{0x83, no_check},
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{0x85, no_check},
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{0x86, no_check},
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{0x87, no_check},
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{0x88, no_check},
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{0x89, no_check},
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{0x8A, no_check},
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{0x90, no_check},
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{0x91, no_check},
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{0x92, no_check},
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{0x93, no_check}
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};
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static hz_init_t init_table3[] = {
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{0xf2, check_for_header2_err},
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{0xf0, check_for_header1_err},
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{0xcc, check_for_dummy},
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{0x00, check_number_texunits}
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};
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static hazard_t table1[256];
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static hazard_t table2[256];
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static hazard_t table3[256];
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static __inline__ int
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eat_words(const uint32_t ** buf, const uint32_t * buf_end, unsigned num_words)
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{
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if ((buf_end - *buf) >= num_words) {
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*buf += num_words;
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return 0;
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}
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DRM_ERROR("Illegal termination of DMA command buffer\n");
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return 1;
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}
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/*
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* Partially stolen from drm_memory.h
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*/
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static __inline__ drm_local_map_t *via_drm_lookup_agp_map(drm_via_state_t *seq,
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unsigned long offset,
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unsigned long size,
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drm_device_t * dev)
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{
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struct list_head *list;
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drm_map_list_t *r_list;
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drm_local_map_t *map = seq->map_cache;
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if (map && map->offset <= offset
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&& (offset + size) <= (map->offset + map->size)) {
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return map;
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}
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list_for_each(list, &dev->maplist->head) {
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r_list = (drm_map_list_t *) list;
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map = r_list->map;
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if (!map)
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continue;
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if (map->offset <= offset
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&& (offset + size) <= (map->offset + map->size)
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&& !(map->flags & _DRM_RESTRICTED)
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&& (map->type == _DRM_AGP)) {
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seq->map_cache = map;
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return map;
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}
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}
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return NULL;
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}
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/*
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* Require that all AGP texture levels reside in the same AGP map which should
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* be mappable by the client. This is not a big restriction.
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* FIXME: To actually enforce this security policy strictly, drm_rmmap
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* would have to wait for dma quiescent before removing an AGP map.
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* The via_drm_lookup_agp_map call in reality seems to take
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* very little CPU time.
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*/
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static __inline__ int finish_current_sequence(drm_via_state_t * cur_seq)
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{
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switch (cur_seq->unfinished) {
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case z_address:
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DRM_DEBUG("Z Buffer start address is 0x%x\n", cur_seq->z_addr);
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break;
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case dest_address:
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DRM_DEBUG("Destination start address is 0x%x\n",
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cur_seq->d_addr);
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break;
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case tex_address:
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if (cur_seq->agp_texture) {
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unsigned start =
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cur_seq->tex_level_lo[cur_seq->texture];
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unsigned end = cur_seq->tex_level_hi[cur_seq->texture];
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unsigned long lo = ~0, hi = 0, tmp;
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uint32_t *addr, *pitch, *height, tex;
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unsigned i;
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if (end > 9)
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end = 9;
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if (start > 9)
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start = 9;
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addr =
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&(cur_seq->t_addr[tex = cur_seq->texture][start]);
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pitch = &(cur_seq->pitch[tex][start]);
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height = &(cur_seq->height[tex][start]);
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for (i = start; i <= end; ++i) {
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tmp = *addr++;
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if (tmp < lo)
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lo = tmp;
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tmp += (*height++ << *pitch++);
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if (tmp > hi)
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hi = tmp;
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}
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if (!via_drm_lookup_agp_map
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(cur_seq, lo, hi - lo, cur_seq->dev)) {
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DRM_ERROR
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("AGP texture is not in allowed map\n");
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return 2;
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}
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}
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break;
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default:
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break;
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}
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cur_seq->unfinished = no_sequence;
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return 0;
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}
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static __inline__ int
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investigate_hazard(uint32_t cmd, hazard_t hz, drm_via_state_t * cur_seq)
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{
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register uint32_t tmp, *tmp_addr;
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if (cur_seq->unfinished && (cur_seq->unfinished != seqs[hz])) {
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int ret;
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if ((ret = finish_current_sequence(cur_seq)))
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return ret;
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}
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switch (hz) {
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case check_for_header2:
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if (cmd == HALCYON_HEADER2)
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return 1;
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return 0;
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case check_for_header1:
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if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1)
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return 1;
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return 0;
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case check_for_header2_err:
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if (cmd == HALCYON_HEADER2)
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return 1;
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DRM_ERROR("Illegal DMA HALCYON_HEADER2 command\n");
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break;
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case check_for_header1_err:
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if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1)
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return 1;
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DRM_ERROR("Illegal DMA HALCYON_HEADER1 command\n");
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break;
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case check_for_fire:
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if ((cmd & HALCYON_FIREMASK) == HALCYON_FIRECMD)
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return 1;
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DRM_ERROR("Illegal DMA HALCYON_FIRECMD command\n");
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break;
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case check_for_dummy:
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if (HC_DUMMY == cmd)
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return 0;
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DRM_ERROR("Illegal DMA HC_DUMMY command\n");
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break;
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case check_for_dd:
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if (0xdddddddd == cmd)
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return 0;
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DRM_ERROR("Illegal DMA 0xdddddddd command\n");
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break;
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case check_z_buffer_addr0:
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cur_seq->unfinished = z_address;
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cur_seq->z_addr = (cur_seq->z_addr & 0xFF000000) |
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(cmd & 0x00FFFFFF);
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return 0;
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case check_z_buffer_addr1:
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cur_seq->unfinished = z_address;
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cur_seq->z_addr = (cur_seq->z_addr & 0x00FFFFFF) |
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((cmd & 0xFF) << 24);
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return 0;
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case check_z_buffer_addr_mode:
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cur_seq->unfinished = z_address;
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if ((cmd & 0x0000C000) == 0)
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return 0;
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DRM_ERROR("Attempt to place Z buffer in system memory\n");
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return 2;
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case check_destination_addr0:
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cur_seq->unfinished = dest_address;
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cur_seq->d_addr = (cur_seq->d_addr & 0xFF000000) |
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(cmd & 0x00FFFFFF);
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return 0;
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case check_destination_addr1:
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cur_seq->unfinished = dest_address;
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cur_seq->d_addr = (cur_seq->d_addr & 0x00FFFFFF) |
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((cmd & 0xFF) << 24);
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return 0;
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case check_destination_addr_mode:
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cur_seq->unfinished = dest_address;
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if ((cmd & 0x0000C000) == 0)
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return 0;
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DRM_ERROR
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("Attempt to place 3D drawing buffer in system memory\n");
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return 2;
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case check_texture_addr0:
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cur_seq->unfinished = tex_address;
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tmp = (cmd >> 24);
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tmp_addr = &cur_seq->t_addr[cur_seq->texture][tmp];
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*tmp_addr = (*tmp_addr & 0xFF000000) | (cmd & 0x00FFFFFF);
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return 0;
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case check_texture_addr1:
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cur_seq->unfinished = tex_address;
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tmp = ((cmd >> 24) - 0x20);
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tmp += tmp << 1;
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tmp_addr = &cur_seq->t_addr[cur_seq->texture][tmp];
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*tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF) << 24);
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tmp_addr++;
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*tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF00) << 16);
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tmp_addr++;
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*tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF0000) << 8);
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return 0;
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case check_texture_addr2:
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cur_seq->unfinished = tex_address;
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cur_seq->tex_level_lo[tmp = cur_seq->texture] = cmd & 0x3F;
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cur_seq->tex_level_hi[tmp] = (cmd & 0xFC0) >> 6;
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return 0;
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case check_texture_addr3:
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cur_seq->unfinished = tex_address;
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tmp = ((cmd >> 24) - 0x2B);
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cur_seq->pitch[cur_seq->texture][tmp] =
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(cmd & 0x00F00000) >> 20;
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if (!tmp && (cmd & 0x000FFFFF)) {
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DRM_ERROR
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("Unimplemented texture level 0 pitch mode.\n");
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return 2;
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}
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return 0;
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case check_texture_addr4:
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cur_seq->unfinished = tex_address;
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tmp_addr = &cur_seq->t_addr[cur_seq->texture][9];
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*tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF) << 24);
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return 0;
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case check_texture_addr5:
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case check_texture_addr6:
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cur_seq->unfinished = tex_address;
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/*
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* Texture width. We don't care since we have the pitch.
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*/
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return 0;
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case check_texture_addr7:
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cur_seq->unfinished = tex_address;
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tmp_addr = &(cur_seq->height[cur_seq->texture][0]);
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tmp_addr[5] = 1 << ((cmd & 0x00F00000) >> 20);
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tmp_addr[4] = 1 << ((cmd & 0x000F0000) >> 16);
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tmp_addr[3] = 1 << ((cmd & 0x0000F000) >> 12);
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tmp_addr[2] = 1 << ((cmd & 0x00000F00) >> 8);
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tmp_addr[1] = 1 << ((cmd & 0x000000F0) >> 4);
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tmp_addr[0] = 1 << (cmd & 0x0000000F);
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return 0;
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case check_texture_addr8:
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cur_seq->unfinished = tex_address;
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tmp_addr = &(cur_seq->height[cur_seq->texture][0]);
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tmp_addr[9] = 1 << ((cmd & 0x0000F000) >> 12);
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tmp_addr[8] = 1 << ((cmd & 0x00000F00) >> 8);
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tmp_addr[7] = 1 << ((cmd & 0x000000F0) >> 4);
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tmp_addr[6] = 1 << (cmd & 0x0000000F);
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|
return 0;
|
|
case check_texture_addr_mode:
|
|
cur_seq->unfinished = tex_address;
|
|
if (2 == (tmp = cmd & 0x00000003)) {
|
|
DRM_ERROR
|
|
("Attempt to fetch texture from system memory.\n");
|
|
return 2;
|
|
}
|
|
cur_seq->agp_texture = (tmp == 3);
|
|
cur_seq->tex_palette_size[cur_seq->texture] =
|
|
(cmd >> 16) & 0x000000007;
|
|
return 0;
|
|
case check_for_vertex_count:
|
|
cur_seq->vertex_count = cmd & 0x0000FFFF;
|
|
return 0;
|
|
case check_number_texunits:
|
|
cur_seq->multitex = (cmd >> 3) & 1;
|
|
return 0;
|
|
default:
|
|
DRM_ERROR("Illegal DMA data: 0x%x\n", cmd);
|
|
return 2;
|
|
}
|
|
return 2;
|
|
}
|
|
|
|
static __inline__ int
|
|
via_check_prim_list(uint32_t const **buffer, const uint32_t * buf_end,
|
|
drm_via_state_t * cur_seq)
|
|
{
|
|
drm_via_private_t *dev_priv =
|
|
(drm_via_private_t *) cur_seq->dev->dev_private;
|
|
uint32_t a_fire, bcmd, dw_count;
|
|
int ret = 0;
|
|
int have_fire;
|
|
const uint32_t *buf = *buffer;
|
|
|
|
while (buf < buf_end) {
|
|
have_fire = 0;
|
|
if ((buf_end - buf) < 2) {
|
|
DRM_ERROR
|
|
("Unexpected termination of primitive list.\n");
|
|
ret = 1;
|
|
break;
|
|
}
|
|
if ((*buf & HC_ACMD_MASK) != HC_ACMD_HCmdB)
|
|
break;
|
|
bcmd = *buf++;
|
|
if ((*buf & HC_ACMD_MASK) != HC_ACMD_HCmdA) {
|
|
DRM_ERROR("Expected Vertex List A command, got 0x%x\n",
|
|
*buf);
|
|
ret = 1;
|
|
break;
|
|
}
|
|
a_fire =
|
|
*buf++ | HC_HPLEND_MASK | HC_HPMValidN_MASK |
|
|
HC_HE3Fire_MASK;
|
|
|
|
/*
|
|
* How many dwords per vertex ?
|
|
*/
|
|
|
|
if (cur_seq->agp && ((bcmd & (0xF << 11)) == 0)) {
|
|
DRM_ERROR("Illegal B command vertex data for AGP.\n");
|
|
ret = 1;
|
|
break;
|
|
}
|
|
|
|
dw_count = 0;
|
|
if (bcmd & (1 << 7))
|
|
dw_count += (cur_seq->multitex) ? 2 : 1;
|
|
if (bcmd & (1 << 8))
|
|
dw_count += (cur_seq->multitex) ? 2 : 1;
|
|
if (bcmd & (1 << 9))
|
|
dw_count++;
|
|
if (bcmd & (1 << 10))
|
|
dw_count++;
|
|
if (bcmd & (1 << 11))
|
|
dw_count++;
|
|
if (bcmd & (1 << 12))
|
|
dw_count++;
|
|
if (bcmd & (1 << 13))
|
|
dw_count++;
|
|
if (bcmd & (1 << 14))
|
|
dw_count++;
|
|
|
|
while (buf < buf_end) {
|
|
if (*buf == a_fire) {
|
|
if (dev_priv->num_fire_offsets >=
|
|
VIA_FIRE_BUF_SIZE) {
|
|
DRM_ERROR("Fire offset buffer full.\n");
|
|
ret = 1;
|
|
break;
|
|
}
|
|
dev_priv->fire_offsets[dev_priv->
|
|
num_fire_offsets++] =
|
|
buf;
|
|
have_fire = 1;
|
|
buf++;
|
|
if (buf < buf_end && *buf == a_fire)
|
|
buf++;
|
|
break;
|
|
}
|
|
if ((*buf == HALCYON_HEADER2) ||
|
|
((*buf & HALCYON_FIREMASK) == HALCYON_FIRECMD)) {
|
|
DRM_ERROR("Missing Vertex Fire command, "
|
|
"Stray Vertex Fire command or verifier "
|
|
"lost sync.\n");
|
|
ret = 1;
|
|
break;
|
|
}
|
|
if ((ret = eat_words(&buf, buf_end, dw_count)))
|
|
break;
|
|
}
|
|
if (buf >= buf_end && !have_fire) {
|
|
DRM_ERROR("Missing Vertex Fire command or verifier "
|
|
"lost sync.\n");
|
|
ret = 1;
|
|
break;
|
|
}
|
|
if (cur_seq->agp && ((buf - cur_seq->buf_start) & 0x01)) {
|
|
DRM_ERROR("AGP Primitive list end misaligned.\n");
|
|
ret = 1;
|
|
break;
|
|
}
|
|
}
|
|
*buffer = buf;
|
|
return ret;
|
|
}
|
|
|
|
static __inline__ verifier_state_t
|
|
via_check_header2(uint32_t const **buffer, const uint32_t * buf_end,
|
|
drm_via_state_t * hc_state)
|
|
{
|
|
uint32_t cmd;
|
|
int hz_mode;
|
|
hazard_t hz;
|
|
const uint32_t *buf = *buffer;
|
|
const hazard_t *hz_table;
|
|
|
|
if ((buf_end - buf) < 2) {
|
|
DRM_ERROR
|
|
("Illegal termination of DMA HALCYON_HEADER2 sequence.\n");
|
|
return state_error;
|
|
}
|
|
buf++;
|
|
cmd = (*buf++ & 0xFFFF0000) >> 16;
|
|
|
|
switch (cmd) {
|
|
case HC_ParaType_CmdVdata:
|
|
if (via_check_prim_list(&buf, buf_end, hc_state))
|
|
return state_error;
|
|
*buffer = buf;
|
|
return state_command;
|
|
case HC_ParaType_NotTex:
|
|
hz_table = table1;
|
|
break;
|
|
case HC_ParaType_Tex:
|
|
hc_state->texture = 0;
|
|
hz_table = table2;
|
|
break;
|
|
case (HC_ParaType_Tex | (HC_SubType_Tex1 << 8)):
|
|
hc_state->texture = 1;
|
|
hz_table = table2;
|
|
break;
|
|
case (HC_ParaType_Tex | (HC_SubType_TexGeneral << 8)):
|
|
hz_table = table3;
|
|
break;
|
|
case HC_ParaType_Auto:
|
|
if (eat_words(&buf, buf_end, 2))
|
|
return state_error;
|
|
*buffer = buf;
|
|
return state_command;
|
|
case (HC_ParaType_Palette | (HC_SubType_Stipple << 8)):
|
|
if (eat_words(&buf, buf_end, 32))
|
|
return state_error;
|
|
*buffer = buf;
|
|
return state_command;
|
|
case (HC_ParaType_Palette | (HC_SubType_TexPalette0 << 8)):
|
|
case (HC_ParaType_Palette | (HC_SubType_TexPalette1 << 8)):
|
|
DRM_ERROR("Texture palettes are rejected because of "
|
|
"lack of info how to determine their size.\n");
|
|
return state_error;
|
|
case (HC_ParaType_Palette | (HC_SubType_FogTable << 8)):
|
|
DRM_ERROR("Fog factor palettes are rejected because of "
|
|
"lack of info how to determine their size.\n");
|
|
return state_error;
|
|
default:
|
|
|
|
/*
|
|
* There are some unimplemented HC_ParaTypes here, that
|
|
* need to be implemented if the Mesa driver is extended.
|
|
*/
|
|
|
|
DRM_ERROR("Invalid or unimplemented HALCYON_HEADER2 "
|
|
"DMA subcommand: 0x%x. Previous dword: 0x%x\n",
|
|
cmd, *(buf - 2));
|
|
*buffer = buf;
|
|
return state_error;
|
|
}
|
|
|
|
while (buf < buf_end) {
|
|
cmd = *buf++;
|
|
if ((hz = hz_table[cmd >> 24])) {
|
|
if ((hz_mode = investigate_hazard(cmd, hz, hc_state))) {
|
|
if (hz_mode == 1) {
|
|
buf--;
|
|
break;
|
|
}
|
|
return state_error;
|
|
}
|
|
} else if (hc_state->unfinished &&
|
|
finish_current_sequence(hc_state)) {
|
|
return state_error;
|
|
}
|
|
}
|
|
if (hc_state->unfinished && finish_current_sequence(hc_state)) {
|
|
return state_error;
|
|
}
|
|
*buffer = buf;
|
|
return state_command;
|
|
}
|
|
|
|
static __inline__ verifier_state_t
|
|
via_parse_header2(drm_via_private_t * dev_priv, uint32_t const **buffer,
|
|
const uint32_t * buf_end, int *fire_count)
|
|
{
|
|
uint32_t cmd;
|
|
const uint32_t *buf = *buffer;
|
|
const uint32_t *next_fire;
|
|
int burst = 0;
|
|
|
|
next_fire = dev_priv->fire_offsets[*fire_count];
|
|
buf++;
|
|
cmd = (*buf & 0xFFFF0000) >> 16;
|
|
VIA_WRITE(HC_REG_TRANS_SET + HC_REG_BASE, *buf++);
|
|
switch (cmd) {
|
|
case HC_ParaType_CmdVdata:
|
|
while ((buf < buf_end) &&
|
|
(*fire_count < dev_priv->num_fire_offsets) &&
|
|
(*buf & HC_ACMD_MASK) == HC_ACMD_HCmdB) {
|
|
while (buf <= next_fire) {
|
|
VIA_WRITE(HC_REG_TRANS_SPACE + HC_REG_BASE +
|
|
(burst & 63), *buf++);
|
|
burst += 4;
|
|
}
|
|
if ((buf < buf_end)
|
|
&& ((*buf & HALCYON_FIREMASK) == HALCYON_FIRECMD))
|
|
buf++;
|
|
|
|
if (++(*fire_count) < dev_priv->num_fire_offsets)
|
|
next_fire = dev_priv->fire_offsets[*fire_count];
|
|
}
|
|
break;
|
|
default:
|
|
while (buf < buf_end) {
|
|
|
|
if (*buf == HC_HEADER2 ||
|
|
(*buf & HALCYON_HEADER1MASK) == HALCYON_HEADER1 ||
|
|
(*buf & VIA_VIDEOMASK) == VIA_VIDEO_HEADER5 ||
|
|
(*buf & VIA_VIDEOMASK) == VIA_VIDEO_HEADER6)
|
|
break;
|
|
|
|
VIA_WRITE(HC_REG_TRANS_SPACE + HC_REG_BASE +
|
|
(burst & 63), *buf++);
|
|
burst += 4;
|
|
}
|
|
}
|
|
*buffer = buf;
|
|
return state_command;
|
|
}
|
|
|
|
static __inline__ int verify_mmio_address(uint32_t address)
|
|
{
|
|
if ((address > 0x3FF) && (address < 0xC00)) {
|
|
DRM_ERROR("Invalid VIDEO DMA command. "
|
|
"Attempt to access 3D- or command burst area.\n");
|
|
return 1;
|
|
} else if ((address > 0xCFF) && (address < 0x1300)) {
|
|
DRM_ERROR("Invalid VIDEO DMA command. "
|
|
"Attempt to access PCI DMA area.\n");
|
|
return 1;
|
|
} else if (address > 0x13FF) {
|
|
DRM_ERROR("Invalid VIDEO DMA command. "
|
|
"Attempt to access VGA registers.\n");
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static __inline__ int
|
|
verify_video_tail(uint32_t const **buffer, const uint32_t * buf_end,
|
|
uint32_t dwords)
|
|
{
|
|
const uint32_t *buf = *buffer;
|
|
|
|
if (buf_end - buf < dwords) {
|
|
DRM_ERROR("Illegal termination of video command.\n");
|
|
return 1;
|
|
}
|
|
while (dwords--) {
|
|
if (*buf++) {
|
|
DRM_ERROR("Illegal video command tail.\n");
|
|
return 1;
|
|
}
|
|
}
|
|
*buffer = buf;
|
|
return 0;
|
|
}
|
|
|
|
static __inline__ verifier_state_t
|
|
via_check_header1(uint32_t const **buffer, const uint32_t * buf_end)
|
|
{
|
|
uint32_t cmd;
|
|
const uint32_t *buf = *buffer;
|
|
verifier_state_t ret = state_command;
|
|
|
|
while (buf < buf_end) {
|
|
cmd = *buf;
|
|
if ((cmd > ((0x3FF >> 2) | HALCYON_HEADER1)) &&
|
|
(cmd < ((0xC00 >> 2) | HALCYON_HEADER1))) {
|
|
if ((cmd & HALCYON_HEADER1MASK) != HALCYON_HEADER1)
|
|
break;
|
|
DRM_ERROR("Invalid HALCYON_HEADER1 command. "
|
|
"Attempt to access 3D- or command burst area.\n");
|
|
ret = state_error;
|
|
break;
|
|
} else if (cmd > ((0xCFF >> 2) | HALCYON_HEADER1)) {
|
|
if ((cmd & HALCYON_HEADER1MASK) != HALCYON_HEADER1)
|
|
break;
|
|
DRM_ERROR("Invalid HALCYON_HEADER1 command. "
|
|
"Attempt to access VGA registers.\n");
|
|
ret = state_error;
|
|
break;
|
|
} else {
|
|
buf += 2;
|
|
}
|
|
}
|
|
*buffer = buf;
|
|
return ret;
|
|
}
|
|
|
|
static __inline__ verifier_state_t
|
|
via_parse_header1(drm_via_private_t * dev_priv, uint32_t const **buffer,
|
|
const uint32_t * buf_end)
|
|
{
|
|
register uint32_t cmd;
|
|
const uint32_t *buf = *buffer;
|
|
|
|
while (buf < buf_end) {
|
|
cmd = *buf;
|
|
if ((cmd & HALCYON_HEADER1MASK) != HALCYON_HEADER1)
|
|
break;
|
|
VIA_WRITE((cmd & ~HALCYON_HEADER1MASK) << 2, *++buf);
|
|
buf++;
|
|
}
|
|
*buffer = buf;
|
|
return state_command;
|
|
}
|
|
|
|
static __inline__ verifier_state_t
|
|
via_check_vheader5(uint32_t const **buffer, const uint32_t * buf_end)
|
|
{
|
|
uint32_t data;
|
|
const uint32_t *buf = *buffer;
|
|
|
|
if (buf_end - buf < 4) {
|
|
DRM_ERROR("Illegal termination of video header5 command\n");
|
|
return state_error;
|
|
}
|
|
|
|
data = *buf++ & ~VIA_VIDEOMASK;
|
|
if (verify_mmio_address(data))
|
|
return state_error;
|
|
|
|
data = *buf++;
|
|
if (*buf++ != 0x00F50000) {
|
|
DRM_ERROR("Illegal header5 header data\n");
|
|
return state_error;
|
|
}
|
|
if (*buf++ != 0x00000000) {
|
|
DRM_ERROR("Illegal header5 header data\n");
|
|
return state_error;
|
|
}
|
|
if (eat_words(&buf, buf_end, data))
|
|
return state_error;
|
|
if ((data & 3) && verify_video_tail(&buf, buf_end, 4 - (data & 3)))
|
|
return state_error;
|
|
*buffer = buf;
|
|
return state_command;
|
|
|
|
}
|
|
|
|
static __inline__ verifier_state_t
|
|
via_parse_vheader5(drm_via_private_t * dev_priv, uint32_t const **buffer,
|
|
const uint32_t * buf_end)
|
|
{
|
|
uint32_t addr, count, i;
|
|
const uint32_t *buf = *buffer;
|
|
|
|
addr = *buf++ & ~VIA_VIDEOMASK;
|
|
i = count = *buf;
|
|
buf += 3;
|
|
while (i--) {
|
|
VIA_WRITE(addr, *buf++);
|
|
}
|
|
if (count & 3)
|
|
buf += 4 - (count & 3);
|
|
*buffer = buf;
|
|
return state_command;
|
|
}
|
|
|
|
static __inline__ verifier_state_t
|
|
via_check_vheader6(uint32_t const **buffer, const uint32_t * buf_end)
|
|
{
|
|
uint32_t data;
|
|
const uint32_t *buf = *buffer;
|
|
uint32_t i;
|
|
|
|
if (buf_end - buf < 4) {
|
|
DRM_ERROR("Illegal termination of video header6 command\n");
|
|
return state_error;
|
|
}
|
|
buf++;
|
|
data = *buf++;
|
|
if (*buf++ != 0x00F60000) {
|
|
DRM_ERROR("Illegal header6 header data\n");
|
|
return state_error;
|
|
}
|
|
if (*buf++ != 0x00000000) {
|
|
DRM_ERROR("Illegal header6 header data\n");
|
|
return state_error;
|
|
}
|
|
if ((buf_end - buf) < (data << 1)) {
|
|
DRM_ERROR("Illegal termination of video header6 command\n");
|
|
return state_error;
|
|
}
|
|
for (i = 0; i < data; ++i) {
|
|
if (verify_mmio_address(*buf++))
|
|
return state_error;
|
|
buf++;
|
|
}
|
|
data <<= 1;
|
|
if ((data & 3) && verify_video_tail(&buf, buf_end, 4 - (data & 3)))
|
|
return state_error;
|
|
*buffer = buf;
|
|
return state_command;
|
|
}
|
|
|
|
static __inline__ verifier_state_t
|
|
via_parse_vheader6(drm_via_private_t * dev_priv, uint32_t const **buffer,
|
|
const uint32_t * buf_end)
|
|
{
|
|
|
|
uint32_t addr, count, i;
|
|
const uint32_t *buf = *buffer;
|
|
|
|
i = count = *++buf;
|
|
buf += 3;
|
|
while (i--) {
|
|
addr = *buf++;
|
|
VIA_WRITE(addr, *buf++);
|
|
}
|
|
count <<= 1;
|
|
if (count & 3)
|
|
buf += 4 - (count & 3);
|
|
*buffer = buf;
|
|
return state_command;
|
|
}
|
|
|
|
int
|
|
via_verify_command_stream(const uint32_t * buf, unsigned int size,
|
|
drm_device_t * dev, int agp)
|
|
{
|
|
|
|
drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
|
|
drm_via_state_t *hc_state = &dev_priv->hc_state;
|
|
drm_via_state_t saved_state = *hc_state;
|
|
uint32_t cmd;
|
|
const uint32_t *buf_end = buf + (size >> 2);
|
|
verifier_state_t state = state_command;
|
|
int pro_group_a = dev_priv->pro_group_a;
|
|
|
|
hc_state->dev = dev;
|
|
hc_state->unfinished = no_sequence;
|
|
hc_state->map_cache = NULL;
|
|
hc_state->agp = agp;
|
|
hc_state->buf_start = buf;
|
|
dev_priv->num_fire_offsets = 0;
|
|
|
|
while (buf < buf_end) {
|
|
|
|
switch (state) {
|
|
case state_header2:
|
|
state = via_check_header2(&buf, buf_end, hc_state);
|
|
break;
|
|
case state_header1:
|
|
state = via_check_header1(&buf, buf_end);
|
|
break;
|
|
case state_vheader5:
|
|
state = via_check_vheader5(&buf, buf_end);
|
|
break;
|
|
case state_vheader6:
|
|
state = via_check_vheader6(&buf, buf_end);
|
|
break;
|
|
case state_command:
|
|
if (HALCYON_HEADER2 == (cmd = *buf))
|
|
state = state_header2;
|
|
else if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1)
|
|
state = state_header1;
|
|
else if (pro_group_a
|
|
&& (cmd & VIA_VIDEOMASK) == VIA_VIDEO_HEADER5)
|
|
state = state_vheader5;
|
|
else if (pro_group_a
|
|
&& (cmd & VIA_VIDEOMASK) == VIA_VIDEO_HEADER6)
|
|
state = state_vheader6;
|
|
else {
|
|
DRM_ERROR
|
|
("Invalid / Unimplemented DMA HEADER command. 0x%x\n",
|
|
cmd);
|
|
state = state_error;
|
|
}
|
|
break;
|
|
case state_error:
|
|
default:
|
|
*hc_state = saved_state;
|
|
return DRM_ERR(EINVAL);
|
|
}
|
|
}
|
|
if (state == state_error) {
|
|
*hc_state = saved_state;
|
|
return DRM_ERR(EINVAL);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
via_parse_command_stream(drm_device_t * dev, const uint32_t * buf,
|
|
unsigned int size)
|
|
{
|
|
|
|
drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
|
|
uint32_t cmd;
|
|
const uint32_t *buf_end = buf + (size >> 2);
|
|
verifier_state_t state = state_command;
|
|
int fire_count = 0;
|
|
|
|
while (buf < buf_end) {
|
|
|
|
switch (state) {
|
|
case state_header2:
|
|
state =
|
|
via_parse_header2(dev_priv, &buf, buf_end,
|
|
&fire_count);
|
|
break;
|
|
case state_header1:
|
|
state = via_parse_header1(dev_priv, &buf, buf_end);
|
|
break;
|
|
case state_vheader5:
|
|
state = via_parse_vheader5(dev_priv, &buf, buf_end);
|
|
break;
|
|
case state_vheader6:
|
|
state = via_parse_vheader6(dev_priv, &buf, buf_end);
|
|
break;
|
|
case state_command:
|
|
if (HALCYON_HEADER2 == (cmd = *buf))
|
|
state = state_header2;
|
|
else if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1)
|
|
state = state_header1;
|
|
else if ((cmd & VIA_VIDEOMASK) == VIA_VIDEO_HEADER5)
|
|
state = state_vheader5;
|
|
else if ((cmd & VIA_VIDEOMASK) == VIA_VIDEO_HEADER6)
|
|
state = state_vheader6;
|
|
else {
|
|
DRM_ERROR
|
|
("Invalid / Unimplemented DMA HEADER command. 0x%x\n",
|
|
cmd);
|
|
state = state_error;
|
|
}
|
|
break;
|
|
case state_error:
|
|
default:
|
|
return DRM_ERR(EINVAL);
|
|
}
|
|
}
|
|
if (state == state_error) {
|
|
return DRM_ERR(EINVAL);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
setup_hazard_table(hz_init_t init_table[], hazard_t table[], int size)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 256; ++i) {
|
|
table[i] = forbidden_command;
|
|
}
|
|
|
|
for (i = 0; i < size; ++i) {
|
|
table[init_table[i].code] = init_table[i].hz;
|
|
}
|
|
}
|
|
|
|
void via_init_command_verifier(void)
|
|
{
|
|
setup_hazard_table(init_table1, table1,
|
|
sizeof(init_table1) / sizeof(hz_init_t));
|
|
setup_hazard_table(init_table2, table2,
|
|
sizeof(init_table2) / sizeof(hz_init_t));
|
|
setup_hazard_table(init_table3, table3,
|
|
sizeof(init_table3) / sizeof(hz_init_t));
|
|
}
|