diff options
author | Sam Ravnborg <sam@ravnborg.org> | 2022-07-13 20:01:57 +0300 |
---|---|---|
committer | Sam Ravnborg <sam@ravnborg.org> | 2022-07-16 10:26:19 +0300 |
commit | 8f8ed7f8384f71f841bc70cbdbc2dbeeb7f4bcd5 (patch) | |
tree | 69e24f1031faf441b7d3883f6c85ae6c009dd499 /drivers | |
parent | f99995a4d79b630d39541b1b053f4102f8594caf (diff) | |
download | linux-8f8ed7f8384f71f841bc70cbdbc2dbeeb7f4bcd5.tar.xz |
drm/via: Embed via_verifier in via_dri1
Embed the header file in via_drv.h and the code in via_dri1.
All functions are made static as there are no more external users.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Kevin Brace <kevinbrace@bracecomputerlab.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220713170202.1798216-9-sam@ravnborg.org
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/gpu/drm/via/Makefile | 2 | ||||
-rw-r--r-- | drivers/gpu/drm/via/via_dri1.c | 1071 | ||||
-rw-r--r-- | drivers/gpu/drm/via/via_drv.h | 29 | ||||
-rw-r--r-- | drivers/gpu/drm/via/via_verifier.c | 1110 | ||||
-rw-r--r-- | drivers/gpu/drm/via/via_verifier.h | 62 |
5 files changed, 1099 insertions, 1175 deletions
diff --git a/drivers/gpu/drm/via/Makefile b/drivers/gpu/drm/via/Makefile index 66125b150478..8b978dd51a25 100644 --- a/drivers/gpu/drm/via/Makefile +++ b/drivers/gpu/drm/via/Makefile @@ -3,6 +3,6 @@ # Makefile for the drm device driver. This driver provides support for the # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher. -via-y := via_dri1.o via_verifier.o +via-y := via_dri1.o obj-$(CONFIG_DRM_VIA) +=via.o diff --git a/drivers/gpu/drm/via/via_dri1.c b/drivers/gpu/drm/via/via_dri1.c index f8b1f837feb1..f9285cc3e1c7 100644 --- a/drivers/gpu/drm/via/via_dri1.c +++ b/drivers/gpu/drm/via/via_dri1.c @@ -201,8 +201,1079 @@ typedef struct _drm_via_descriptor { uint32_t next; } drm_via_descriptor_t; +typedef enum { + state_command, + state_header2, + state_header1, + state_vheader5, + state_vheader6, + state_error +} verifier_state_t; + +typedef enum { + no_check = 0, + check_for_header2, + check_for_header1, + check_for_header2_err, + check_for_header1_err, + check_for_fire, + check_z_buffer_addr0, + check_z_buffer_addr1, + check_z_buffer_addr_mode, + check_destination_addr0, + check_destination_addr1, + check_destination_addr_mode, + check_for_dummy, + check_for_dd, + check_texture_addr0, + check_texture_addr1, + check_texture_addr2, + check_texture_addr3, + check_texture_addr4, + check_texture_addr5, + check_texture_addr6, + check_texture_addr7, + check_texture_addr8, + check_texture_addr_mode, + check_for_vertex_count, + check_number_texunits, + forbidden_command +} hazard_t; /* + * Associates each hazard above with a possible multi-command + * sequence. For example an address that is split over multiple + * commands and that needs to be checked at the first command + * that does not include any part of the address. + */ + +static drm_via_sequence_t seqs[] = { + no_sequence, + no_sequence, + no_sequence, + no_sequence, + no_sequence, + no_sequence, + z_address, + z_address, + z_address, + dest_address, + dest_address, + dest_address, + no_sequence, + no_sequence, + tex_address, + tex_address, + tex_address, + tex_address, + tex_address, + tex_address, + tex_address, + tex_address, + tex_address, + tex_address, + no_sequence +}; + +typedef struct { + unsigned int code; + hazard_t hz; +} hz_init_t; + +static hz_init_t init_table1[] = { + {0xf2, check_for_header2_err}, + {0xf0, check_for_header1_err}, + {0xee, check_for_fire}, + {0xcc, check_for_dummy}, + {0xdd, check_for_dd}, + {0x00, no_check}, + {0x10, check_z_buffer_addr0}, + {0x11, check_z_buffer_addr1}, + {0x12, check_z_buffer_addr_mode}, + {0x13, no_check}, + {0x14, no_check}, + {0x15, no_check}, + {0x23, no_check}, + {0x24, no_check}, + {0x33, no_check}, + {0x34, no_check}, + {0x35, no_check}, + {0x36, no_check}, + {0x37, no_check}, + {0x38, no_check}, + {0x39, no_check}, + {0x3A, no_check}, + {0x3B, no_check}, + {0x3C, no_check}, + {0x3D, no_check}, + {0x3E, no_check}, + {0x40, check_destination_addr0}, + {0x41, check_destination_addr1}, + {0x42, check_destination_addr_mode}, + {0x43, no_check}, + {0x44, no_check}, + {0x50, no_check}, + {0x51, no_check}, + {0x52, no_check}, + {0x53, no_check}, + {0x54, no_check}, + {0x55, no_check}, + {0x56, no_check}, + {0x57, no_check}, + {0x58, no_check}, + {0x70, no_check}, + {0x71, no_check}, + {0x78, no_check}, + {0x79, no_check}, + {0x7A, no_check}, + {0x7B, no_check}, + {0x7C, no_check}, + {0x7D, check_for_vertex_count} +}; + +static hz_init_t init_table2[] = { + {0xf2, check_for_header2_err}, + {0xf0, check_for_header1_err}, + {0xee, check_for_fire}, + {0xcc, check_for_dummy}, + {0x00, check_texture_addr0}, + {0x01, check_texture_addr0}, + {0x02, check_texture_addr0}, + {0x03, check_texture_addr0}, + {0x04, check_texture_addr0}, + {0x05, check_texture_addr0}, + {0x06, check_texture_addr0}, + {0x07, check_texture_addr0}, + {0x08, check_texture_addr0}, + {0x09, check_texture_addr0}, + {0x20, check_texture_addr1}, + {0x21, check_texture_addr1}, + {0x22, check_texture_addr1}, + {0x23, check_texture_addr4}, + {0x2B, check_texture_addr3}, + {0x2C, check_texture_addr3}, + {0x2D, check_texture_addr3}, + {0x2E, check_texture_addr3}, + {0x2F, check_texture_addr3}, + {0x30, check_texture_addr3}, + {0x31, check_texture_addr3}, + {0x32, check_texture_addr3}, + {0x33, check_texture_addr3}, + {0x34, check_texture_addr3}, + {0x4B, check_texture_addr5}, + {0x4C, check_texture_addr6}, + {0x51, check_texture_addr7}, + {0x52, check_texture_addr8}, + {0x77, check_texture_addr2}, + {0x78, no_check}, + {0x79, no_check}, + {0x7A, no_check}, + {0x7B, check_texture_addr_mode}, + {0x7C, no_check}, + {0x7D, no_check}, + {0x7E, no_check}, + {0x7F, no_check}, + {0x80, no_check}, + {0x81, no_check}, + {0x82, no_check}, + {0x83, no_check}, + {0x85, no_check}, + {0x86, no_check}, + {0x87, no_check}, + {0x88, no_check}, + {0x89, no_check}, + {0x8A, no_check}, + {0x90, no_check}, + {0x91, no_check}, + {0x92, no_check}, + {0x93, no_check} +}; + +static hz_init_t init_table3[] = { + {0xf2, check_for_header2_err}, + {0xf0, check_for_header1_err}, + {0xcc, check_for_dummy}, + {0x00, check_number_texunits} +}; + +static hazard_t table1[256]; +static hazard_t table2[256]; +static hazard_t table3[256]; + +static __inline__ int +eat_words(const uint32_t **buf, const uint32_t *buf_end, unsigned num_words) +{ + if ((buf_end - *buf) >= num_words) { + *buf += num_words; + return 0; + } + DRM_ERROR("Illegal termination of DMA command buffer\n"); + return 1; +} + +/* + * Partially stolen from drm_memory.h + */ + +static __inline__ drm_local_map_t *via_drm_lookup_agp_map(drm_via_state_t *seq, + unsigned long offset, + unsigned long size, + struct drm_device *dev) +{ + struct drm_map_list *r_list; + drm_local_map_t *map = seq->map_cache; + + if (map && map->offset <= offset + && (offset + size) <= (map->offset + map->size)) { + return map; + } + + list_for_each_entry(r_list, &dev->maplist, head) { + map = r_list->map; + if (!map) + continue; + if (map->offset <= offset + && (offset + size) <= (map->offset + map->size) + && !(map->flags & _DRM_RESTRICTED) + && (map->type == _DRM_AGP)) { + seq->map_cache = map; + return map; + } + } + return NULL; +} + +/* + * Require that all AGP texture levels reside in the same AGP map which should + * be mappable by the client. This is not a big restriction. + * FIXME: To actually enforce this security policy strictly, drm_rmmap + * would have to wait for dma quiescent before removing an AGP map. + * The via_drm_lookup_agp_map call in reality seems to take + * very little CPU time. + */ + +static __inline__ int finish_current_sequence(drm_via_state_t * cur_seq) +{ + switch (cur_seq->unfinished) { + case z_address: + DRM_DEBUG("Z Buffer start address is 0x%x\n", cur_seq->z_addr); + break; + case dest_address: + DRM_DEBUG("Destination start address is 0x%x\n", + cur_seq->d_addr); + break; + case tex_address: + if (cur_seq->agp_texture) { + unsigned start = + cur_seq->tex_level_lo[cur_seq->texture]; + unsigned end = cur_seq->tex_level_hi[cur_seq->texture]; + unsigned long lo = ~0, hi = 0, tmp; + uint32_t *addr, *pitch, *height, tex; + unsigned i; + int npot; + + if (end > 9) + end = 9; + if (start > 9) + start = 9; + + addr = + &(cur_seq->t_addr[tex = cur_seq->texture][start]); + pitch = &(cur_seq->pitch[tex][start]); + height = &(cur_seq->height[tex][start]); + npot = cur_seq->tex_npot[tex]; + for (i = start; i <= end; ++i) { + tmp = *addr++; + if (tmp < lo) + lo = tmp; + if (i == 0 && npot) + tmp += (*height++ * *pitch++); + else + tmp += (*height++ << *pitch++); + if (tmp > hi) + hi = tmp; + } + + if (!via_drm_lookup_agp_map + (cur_seq, lo, hi - lo, cur_seq->dev)) { + DRM_ERROR + ("AGP texture is not in allowed map\n"); + return 2; + } + } + break; + default: + break; + } + cur_seq->unfinished = no_sequence; + return 0; +} + +static __inline__ int +investigate_hazard(uint32_t cmd, hazard_t hz, drm_via_state_t *cur_seq) +{ + register uint32_t tmp, *tmp_addr; + + if (cur_seq->unfinished && (cur_seq->unfinished != seqs[hz])) { + int ret; + if ((ret = finish_current_sequence(cur_seq))) + return ret; + } + + switch (hz) { + case check_for_header2: + if (cmd == HALCYON_HEADER2) + return 1; + return 0; + case check_for_header1: + if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1) + return 1; + return 0; + case check_for_header2_err: + if (cmd == HALCYON_HEADER2) + return 1; + DRM_ERROR("Illegal DMA HALCYON_HEADER2 command\n"); + break; + case check_for_header1_err: + if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1) + return 1; + DRM_ERROR("Illegal DMA HALCYON_HEADER1 command\n"); + break; + case check_for_fire: + if ((cmd & HALCYON_FIREMASK) == HALCYON_FIRECMD) + return 1; + DRM_ERROR("Illegal DMA HALCYON_FIRECMD command\n"); + break; + case check_for_dummy: + if (HC_DUMMY == cmd) + return 0; + DRM_ERROR("Illegal DMA HC_DUMMY command\n"); + break; + case check_for_dd: + if (0xdddddddd == cmd) + return 0; + DRM_ERROR("Illegal DMA 0xdddddddd command\n"); + break; + case check_z_buffer_addr0: + cur_seq->unfinished = z_address; + cur_seq->z_addr = (cur_seq->z_addr & 0xFF000000) | + (cmd & 0x00FFFFFF); + return 0; + case check_z_buffer_addr1: + cur_seq->unfinished = z_address; + cur_seq->z_addr = (cur_seq->z_addr & 0x00FFFFFF) | + ((cmd & 0xFF) << 24); + return 0; + case check_z_buffer_addr_mode: + cur_seq->unfinished = z_address; + if ((cmd & 0x0000C000) == 0) + return 0; + DRM_ERROR("Attempt to place Z buffer in system memory\n"); + return 2; + case check_destination_addr0: + cur_seq->unfinished = dest_address; + cur_seq->d_addr = (cur_seq->d_addr & 0xFF000000) | + (cmd & 0x00FFFFFF); + return 0; + case check_destination_addr1: + cur_seq->unfinished = dest_address; + cur_seq->d_addr = (cur_seq->d_addr & 0x00FFFFFF) | + ((cmd & 0xFF) << 24); + return 0; + case check_destination_addr_mode: + cur_seq->unfinished = dest_address; + if ((cmd & 0x0000C000) == 0) + return 0; + DRM_ERROR + ("Attempt to place 3D drawing buffer in system memory\n"); + return 2; + case check_texture_addr0: + cur_seq->unfinished = tex_address; + tmp = (cmd >> 24); + tmp_addr = &cur_seq->t_addr[cur_seq->texture][tmp]; + *tmp_addr = (*tmp_addr & 0xFF000000) | (cmd & 0x00FFFFFF); + return 0; + case check_texture_addr1: + cur_seq->unfinished = tex_address; + tmp = ((cmd >> 24) - 0x20); + tmp += tmp << 1; + tmp_addr = &cur_seq->t_addr[cur_seq->texture][tmp]; + *tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF) << 24); + tmp_addr++; + *tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF00) << 16); + tmp_addr++; + *tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF0000) << 8); + return 0; + case check_texture_addr2: + cur_seq->unfinished = tex_address; + cur_seq->tex_level_lo[tmp = cur_seq->texture] = cmd & 0x3F; + cur_seq->tex_level_hi[tmp] = (cmd & 0xFC0) >> 6; + return 0; + case check_texture_addr3: + cur_seq->unfinished = tex_address; + tmp = ((cmd >> 24) - HC_SubA_HTXnL0Pit); + if (tmp == 0 && + (cmd & HC_HTXnEnPit_MASK)) { + cur_seq->pitch[cur_seq->texture][tmp] = + (cmd & HC_HTXnLnPit_MASK); + cur_seq->tex_npot[cur_seq->texture] = 1; + } else { + cur_seq->pitch[cur_seq->texture][tmp] = + (cmd & HC_HTXnLnPitE_MASK) >> HC_HTXnLnPitE_SHIFT; + cur_seq->tex_npot[cur_seq->texture] = 0; + if (cmd & 0x000FFFFF) { + DRM_ERROR + ("Unimplemented texture level 0 pitch mode.\n"); + return 2; + } + } + return 0; + case check_texture_addr4: + cur_seq->unfinished = tex_address; + tmp_addr = &cur_seq->t_addr[cur_seq->texture][9]; + *tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF) << 24); + return 0; + case check_texture_addr5: + case check_texture_addr6: + cur_seq->unfinished = tex_address; + /* + * Texture width. We don't care since we have the pitch. + */ + return 0; + case check_texture_addr7: + cur_seq->unfinished = tex_address; + tmp_addr = &(cur_seq->height[cur_seq->texture][0]); + tmp_addr[5] = 1 << ((cmd & 0x00F00000) >> 20); + tmp_addr[4] = 1 << ((cmd & 0x000F0000) >> 16); + tmp_addr[3] = 1 << ((cmd & 0x0000F000) >> 12); + tmp_addr[2] = 1 << ((cmd & 0x00000F00) >> 8); + tmp_addr[1] = 1 << ((cmd & 0x000000F0) >> 4); + tmp_addr[0] = 1 << (cmd & 0x0000000F); + return 0; + case check_texture_addr8: + cur_seq->unfinished = tex_address; + tmp_addr = &(cur_seq->height[cur_seq->texture][0]); + tmp_addr[9] = 1 << ((cmd & 0x0000F000) >> 12); + tmp_addr[8] = 1 << ((cmd & 0x00000F00) >> 8); + tmp_addr[7] = 1 << ((cmd & 0x000000F0) >> 4); + tmp_addr[6] = 1 << (cmd & 0x0000000F); + 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(dev_priv, 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(dev_priv, 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(dev_priv, 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(dev_priv, (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(dev_priv, 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(dev_priv, addr, *buf++); + } + count <<= 1; + if (count & 3) + buf += 4 - (count & 3); + *buffer = buf; + return state_command; +} + +static int +via_verify_command_stream(const uint32_t * buf, unsigned int size, + struct drm_device * 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 cme_video; + int supported_3d; + + cme_video = (dev_priv->chipset == VIA_PRO_GROUP_A || + dev_priv->chipset == VIA_DX9_0); + + supported_3d = dev_priv->chipset != VIA_DX9_0; + + 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: + cmd = *buf; + if ((cmd == HALCYON_HEADER2) && supported_3d) + state = state_header2; + else if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1) + state = state_header1; + else if (cme_video + && (cmd & VIA_VIDEOMASK) == VIA_VIDEO_HEADER5) + state = state_vheader5; + else if (cme_video + && (cmd & VIA_VIDEOMASK) == VIA_VIDEO_HEADER6) + state = state_vheader6; + else if ((cmd == HALCYON_HEADER2) && !supported_3d) { + DRM_ERROR("Accelerated 3D is not supported on this chipset yet.\n"); + state = state_error; + } 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 -EINVAL; + } + } + if (state == state_error) { + *hc_state = saved_state; + return -EINVAL; + } + return 0; +} + +static int +via_parse_command_stream(struct drm_device *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: + cmd = *buf; + if (cmd == HALCYON_HEADER2) + 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 -EINVAL; + } + } + if (state == state_error) + return -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; +} + +static void via_init_command_verifier(void) +{ + setup_hazard_table(init_table1, table1, ARRAY_SIZE(init_table1)); + setup_hazard_table(init_table2, table2, ARRAY_SIZE(init_table2)); + setup_hazard_table(init_table3, table3, ARRAY_SIZE(init_table3)); +} +/* * Unmap a DMA mapping. */ static void diff --git a/drivers/gpu/drm/via/via_drv.h b/drivers/gpu/drm/via/via_drv.h index 6b26decfadb8..640a7701f606 100644 --- a/drivers/gpu/drm/via/via_drv.h +++ b/drivers/gpu/drm/via/via_drv.h @@ -46,7 +46,33 @@ #define DRIVER_MINOR 11 #define DRIVER_PATCHLEVEL 1 -#include "via_verifier.h" +typedef enum { + no_sequence = 0, + z_address, + dest_address, + tex_address +} drm_via_sequence_t; + +typedef struct { + unsigned texture; + uint32_t z_addr; + uint32_t d_addr; + uint32_t t_addr[2][10]; + uint32_t pitch[2][10]; + uint32_t height[2][10]; + uint32_t tex_level_lo[2]; + uint32_t tex_level_hi[2]; + uint32_t tex_palette_size[2]; + uint32_t tex_npot[2]; + drm_via_sequence_t unfinished; + int agp_texture; + int multitex; + struct drm_device *dev; + drm_local_map_t *map_cache; + uint32_t vertex_count; + int agp; + const uint32_t *buf_start; +} drm_via_state_t; #define VIA_PCI_BUF_SIZE 60000 #define VIA_FIRE_BUF_SIZE 1024 @@ -234,7 +260,6 @@ extern int via_init_context(struct drm_device *dev, int context); extern int via_do_cleanup_map(struct drm_device *dev); extern int via_dma_cleanup(struct drm_device *dev); -extern void via_init_command_verifier(void); extern int via_driver_dma_quiescent(struct drm_device *dev); #endif diff --git a/drivers/gpu/drm/via/via_verifier.c b/drivers/gpu/drm/via/via_verifier.c deleted file mode 100644 index 3d6e3a70f318..000000000000 --- a/drivers/gpu/drm/via/via_verifier.c +++ /dev/null @@ -1,1110 +0,0 @@ -/* - * Copyright 2004 The Unichrome Project. All Rights Reserved. - * Copyright 2005 Thomas Hellstrom. All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sub license, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the - * next paragraph) shall be included in all copies or substantial portions - * of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL - * THE AUTHOR(S), AND/OR THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - * - * Author: Thomas Hellstrom 2004, 2005. - * This code was written using docs obtained under NDA from VIA Inc. - * - * Don't run this code directly on an AGP buffer. Due to cache problems it will - * be very slow. - */ - -#include <drm/drm_device.h> -#include <drm/drm_legacy.h> -#include <drm/via_drm.h> - -#include "via_3d_reg.h" -#include "via_drv.h" -#include "via_verifier.h" - -typedef enum { - state_command, - state_header2, - state_header1, - state_vheader5, - state_vheader6, - state_error -} verifier_state_t; - -typedef enum { - no_check = 0, - check_for_header2, - check_for_header1, - check_for_header2_err, - check_for_header1_err, - check_for_fire, - check_z_buffer_addr0, - check_z_buffer_addr1, - check_z_buffer_addr_mode, - check_destination_addr0, - check_destination_addr1, - check_destination_addr_mode, - check_for_dummy, - check_for_dd, - check_texture_addr0, - check_texture_addr1, - check_texture_addr2, - check_texture_addr3, - check_texture_addr4, - check_texture_addr5, - check_texture_addr6, - check_texture_addr7, - check_texture_addr8, - check_texture_addr_mode, - check_for_vertex_count, - check_number_texunits, - forbidden_command -} hazard_t; - -/* - * Associates each hazard above with a possible multi-command - * sequence. For example an address that is split over multiple - * commands and that needs to be checked at the first command - * that does not include any part of the address. - */ - -static drm_via_sequence_t seqs[] = { - no_sequence, - no_sequence, - no_sequence, - no_sequence, - no_sequence, - no_sequence, - z_address, - z_address, - z_address, - dest_address, - dest_address, - dest_address, - no_sequence, - no_sequence, - tex_address, - tex_address, - tex_address, - tex_address, - tex_address, - tex_address, - tex_address, - tex_address, - tex_address, - tex_address, - no_sequence -}; - -typedef struct { - unsigned int code; - hazard_t hz; -} hz_init_t; - -static hz_init_t init_table1[] = { - {0xf2, check_for_header2_err}, - {0xf0, check_for_header1_err}, - {0xee, check_for_fire}, - {0xcc, check_for_dummy}, - {0xdd, check_for_dd}, - {0x00, no_check}, - {0x10, check_z_buffer_addr0}, - {0x11, check_z_buffer_addr1}, - {0x12, check_z_buffer_addr_mode}, - {0x13, no_check}, - {0x14, no_check}, - {0x15, no_check}, - {0x23, no_check}, - {0x24, no_check}, - {0x33, no_check}, - {0x34, no_check}, - {0x35, no_check}, - {0x36, no_check}, - {0x37, no_check}, - {0x38, no_check}, - {0x39, no_check}, - {0x3A, no_check}, - {0x3B, no_check}, - {0x3C, no_check}, - {0x3D, no_check}, - {0x3E, no_check}, - {0x40, check_destination_addr0}, - {0x41, check_destination_addr1}, - {0x42, check_destination_addr_mode}, - {0x43, no_check}, - {0x44, no_check}, - {0x50, no_check}, - {0x51, no_check}, - {0x52, no_check}, - {0x53, no_check}, - {0x54, no_check}, - {0x55, no_check}, - {0x56, no_check}, - {0x57, no_check}, - {0x58, no_check}, - {0x70, no_check}, - {0x71, no_check}, - {0x78, no_check}, - {0x79, no_check}, - {0x7A, no_check}, - {0x7B, no_check}, - {0x7C, no_check}, - {0x7D, check_for_vertex_count} -}; - -static hz_init_t init_table2[] = { - {0xf2, check_for_header2_err}, - {0xf0, check_for_header1_err}, - {0xee, check_for_fire}, - {0xcc, check_for_dummy}, - {0x00, check_texture_addr0}, - {0x01, check_texture_addr0}, - {0x02, check_texture_addr0}, - {0x03, check_texture_addr0}, - {0x04, check_texture_addr0}, - {0x05, check_texture_addr0}, - {0x06, check_texture_addr0}, - {0x07, check_texture_addr0}, - {0x08, check_texture_addr0}, - {0x09, check_texture_addr0}, - {0x20, check_texture_addr1}, - {0x21, check_texture_addr1}, - {0x22, check_texture_addr1}, - {0x23, check_texture_addr4}, - {0x2B, check_texture_addr3}, - {0x2C, check_texture_addr3}, - {0x2D, check_texture_addr3}, - {0x2E, check_texture_addr3}, - {0x2F, check_texture_addr3}, - {0x30, check_texture_addr3}, - {0x31, check_texture_addr3}, - {0x32, check_texture_addr3}, - {0x33, check_texture_addr3}, - {0x34, check_texture_addr3}, - {0x4B, check_texture_addr5}, - {0x4C, check_texture_addr6}, - {0x51, check_texture_addr7}, - {0x52, check_texture_addr8}, - {0x77, check_texture_addr2}, - {0x78, no_check}, - {0x79, no_check}, - {0x7A, no_check}, - {0x7B, check_texture_addr_mode}, - {0x7C, no_check}, - {0x7D, no_check}, - {0x7E, no_check}, - {0x7F, no_check}, - {0x80, no_check}, - {0x81, no_check}, - {0x82, no_check}, - {0x83, no_check}, - {0x85, no_check}, - {0x86, no_check}, - {0x87, no_check}, - {0x88, no_check}, - {0x89, no_check}, - {0x8A, no_check}, - {0x90, no_check}, - {0x91, no_check}, - {0x92, no_check}, - {0x93, no_check} -}; - -static hz_init_t init_table3[] = { - {0xf2, check_for_header2_err}, - {0xf0, check_for_header1_err}, - {0xcc, check_for_dummy}, - {0x00, check_number_texunits} -}; - -static hazard_t table1[256]; -static hazard_t table2[256]; -static hazard_t table3[256]; - -static __inline__ int -eat_words(const uint32_t **buf, const uint32_t *buf_end, unsigned num_words) -{ - if ((buf_end - *buf) >= num_words) { - *buf += num_words; - return 0; - } - DRM_ERROR("Illegal termination of DMA command buffer\n"); - return 1; -} - -/* - * Partially stolen from drm_memory.h - */ - -static __inline__ drm_local_map_t *via_drm_lookup_agp_map(drm_via_state_t *seq, - unsigned long offset, - unsigned long size, - struct drm_device *dev) -{ - struct drm_map_list *r_list; - drm_local_map_t *map = seq->map_cache; - - if (map && map->offset <= offset - && (offset + size) <= (map->offset + map->size)) { - return map; - } - - list_for_each_entry(r_list, &dev->maplist, head) { - map = r_list->map; - if (!map) - continue; - if (map->offset <= offset - && (offset + size) <= (map->offset + map->size) - && !(map->flags & _DRM_RESTRICTED) - && (map->type == _DRM_AGP)) { - seq->map_cache = map; - return map; - } - } - return NULL; -} - -/* - * Require that all AGP texture levels reside in the same AGP map which should - * be mappable by the client. This is not a big restriction. - * FIXME: To actually enforce this security policy strictly, drm_rmmap - * would have to wait for dma quiescent before removing an AGP map. - * The via_drm_lookup_agp_map call in reality seems to take - * very little CPU time. - */ - -static __inline__ int finish_current_sequence(drm_via_state_t * cur_seq) -{ - switch (cur_seq->unfinished) { - case z_address: - DRM_DEBUG("Z Buffer start address is 0x%x\n", cur_seq->z_addr); - break; - case dest_address: - DRM_DEBUG("Destination start address is 0x%x\n", - cur_seq->d_addr); - break; - case tex_address: - if (cur_seq->agp_texture) { - unsigned start = - cur_seq->tex_level_lo[cur_seq->texture]; - unsigned end = cur_seq->tex_level_hi[cur_seq->texture]; - unsigned long lo = ~0, hi = 0, tmp; - uint32_t *addr, *pitch, *height, tex; - unsigned i; - int npot; - - if (end > 9) - end = 9; - if (start > 9) - start = 9; - - addr = - &(cur_seq->t_addr[tex = cur_seq->texture][start]); - pitch = &(cur_seq->pitch[tex][start]); - height = &(cur_seq->height[tex][start]); - npot = cur_seq->tex_npot[tex]; - for (i = start; i <= end; ++i) { - tmp = *addr++; - if (tmp < lo) - lo = tmp; - if (i == 0 && npot) - tmp += (*height++ * *pitch++); - else - tmp += (*height++ << *pitch++); - if (tmp > hi) - hi = tmp; - } - - if (!via_drm_lookup_agp_map - (cur_seq, lo, hi - lo, cur_seq->dev)) { - DRM_ERROR - ("AGP texture is not in allowed map\n"); - return 2; - } - } - break; - default: - break; - } - cur_seq->unfinished = no_sequence; - return 0; -} - -static __inline__ int -investigate_hazard(uint32_t cmd, hazard_t hz, drm_via_state_t *cur_seq) -{ - register uint32_t tmp, *tmp_addr; - - if (cur_seq->unfinished && (cur_seq->unfinished != seqs[hz])) { - int ret; - if ((ret = finish_current_sequence(cur_seq))) - return ret; - } - - switch (hz) { - case check_for_header2: - if (cmd == HALCYON_HEADER2) - return 1; - return 0; - case check_for_header1: - if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1) - return 1; - return 0; - case check_for_header2_err: - if (cmd == HALCYON_HEADER2) - return 1; - DRM_ERROR("Illegal DMA HALCYON_HEADER2 command\n"); - break; - case check_for_header1_err: - if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1) - return 1; - DRM_ERROR("Illegal DMA HALCYON_HEADER1 command\n"); - break; - case check_for_fire: - if ((cmd & HALCYON_FIREMASK) == HALCYON_FIRECMD) - return 1; - DRM_ERROR("Illegal DMA HALCYON_FIRECMD command\n"); - break; - case check_for_dummy: - if (HC_DUMMY == cmd) - return 0; - DRM_ERROR("Illegal DMA HC_DUMMY command\n"); - break; - case check_for_dd: - if (0xdddddddd == cmd) - return 0; - DRM_ERROR("Illegal DMA 0xdddddddd command\n"); - break; - case check_z_buffer_addr0: - cur_seq->unfinished = z_address; - cur_seq->z_addr = (cur_seq->z_addr & 0xFF000000) | - (cmd & 0x00FFFFFF); - return 0; - case check_z_buffer_addr1: - cur_seq->unfinished = z_address; - cur_seq->z_addr = (cur_seq->z_addr & 0x00FFFFFF) | - ((cmd & 0xFF) << 24); - return 0; - case check_z_buffer_addr_mode: - cur_seq->unfinished = z_address; - if ((cmd & 0x0000C000) == 0) - return 0; - DRM_ERROR("Attempt to place Z buffer in system memory\n"); - return 2; - case check_destination_addr0: - cur_seq->unfinished = dest_address; - cur_seq->d_addr = (cur_seq->d_addr & 0xFF000000) | - (cmd & 0x00FFFFFF); - return 0; - case check_destination_addr1: - cur_seq->unfinished = dest_address; - cur_seq->d_addr = (cur_seq->d_addr & 0x00FFFFFF) | - ((cmd & 0xFF) << 24); - return 0; - case check_destination_addr_mode: - cur_seq->unfinished = dest_address; - if ((cmd & 0x0000C000) == 0) - return 0; - DRM_ERROR - ("Attempt to place 3D drawing buffer in system memory\n"); - return 2; - case check_texture_addr0: - cur_seq->unfinished = tex_address; - tmp = (cmd >> 24); - tmp_addr = &cur_seq->t_addr[cur_seq->texture][tmp]; - *tmp_addr = (*tmp_addr & 0xFF000000) | (cmd & 0x00FFFFFF); - return 0; - case check_texture_addr1: - cur_seq->unfinished = tex_address; - tmp = ((cmd >> 24) - 0x20); - tmp += tmp << 1; - tmp_addr = &cur_seq->t_addr[cur_seq->texture][tmp]; - *tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF) << 24); - tmp_addr++; - *tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF00) << 16); - tmp_addr++; - *tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF0000) << 8); - return 0; - case check_texture_addr2: - cur_seq->unfinished = tex_address; - cur_seq->tex_level_lo[tmp = cur_seq->texture] = cmd & 0x3F; - cur_seq->tex_level_hi[tmp] = (cmd & 0xFC0) >> 6; - return 0; - case check_texture_addr3: - cur_seq->unfinished = tex_address; - tmp = ((cmd >> 24) - HC_SubA_HTXnL0Pit); - if (tmp == 0 && - (cmd & HC_HTXnEnPit_MASK)) { - cur_seq->pitch[cur_seq->texture][tmp] = - (cmd & HC_HTXnLnPit_MASK); - cur_seq->tex_npot[cur_seq->texture] = 1; - } else { - cur_seq->pitch[cur_seq->texture][tmp] = - (cmd & HC_HTXnLnPitE_MASK) >> HC_HTXnLnPitE_SHIFT; - cur_seq->tex_npot[cur_seq->texture] = 0; - if (cmd & 0x000FFFFF) { - DRM_ERROR - ("Unimplemented texture level 0 pitch mode.\n"); - return 2; - } - } - return 0; - case check_texture_addr4: - cur_seq->unfinished = tex_address; - tmp_addr = &cur_seq->t_addr[cur_seq->texture][9]; - *tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF) << 24); - return 0; - case check_texture_addr5: - case check_texture_addr6: - cur_seq->unfinished = tex_address; - /* - * Texture width. We don't care since we have the pitch. - */ - return 0; - case check_texture_addr7: - cur_seq->unfinished = tex_address; - tmp_addr = &(cur_seq->height[cur_seq->texture][0]); - tmp_addr[5] = 1 << ((cmd & 0x00F00000) >> 20); - tmp_addr[4] = 1 << ((cmd & 0x000F0000) >> 16); - tmp_addr[3] = 1 << ((cmd & 0x0000F000) >> 12); - tmp_addr[2] = 1 << ((cmd & 0x00000F00) >> 8); - tmp_addr[1] = 1 << ((cmd & 0x000000F0) >> 4); - tmp_addr[0] = 1 << (cmd & 0x0000000F); - return 0; - case check_texture_addr8: - cur_seq->unfinished = tex_address; - tmp_addr = &(cur_seq->height[cur_seq->texture][0]); - tmp_addr[9] = 1 << ((cmd & 0x0000F000) >> 12); - tmp_addr[8] = 1 << ((cmd & 0x00000F00) >> 8); - tmp_addr[7] = 1 << ((cmd & 0x000000F0) >> 4); - tmp_addr[6] = 1 << (cmd & 0x0000000F); - 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(dev_priv, 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(dev_priv, 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(dev_priv, 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(dev_priv, (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(dev_priv, 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(dev_priv, 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, - struct drm_device * 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 cme_video; - int supported_3d; - - cme_video = (dev_priv->chipset == VIA_PRO_GROUP_A || - dev_priv->chipset == VIA_DX9_0); - - supported_3d = dev_priv->chipset != VIA_DX9_0; - - 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: - cmd = *buf; - if ((cmd == HALCYON_HEADER2) && supported_3d) - state = state_header2; - else if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1) - state = state_header1; - else if (cme_video - && (cmd & VIA_VIDEOMASK) == VIA_VIDEO_HEADER5) - state = state_vheader5; - else if (cme_video - && (cmd & VIA_VIDEOMASK) == VIA_VIDEO_HEADER6) - state = state_vheader6; - else if ((cmd == HALCYON_HEADER2) && !supported_3d) { - DRM_ERROR("Accelerated 3D is not supported on this chipset yet.\n"); - state = state_error; - } 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 -EINVAL; - } - } - if (state == state_error) { - *hc_state = saved_state; - return -EINVAL; - } - return 0; -} - -int -via_parse_command_stream(struct drm_device *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: - cmd = *buf; - if (cmd == HALCYON_HEADER2) - 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 -EINVAL; - } - } - if (state == state_error) - return -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, ARRAY_SIZE(init_table1)); - setup_hazard_table(init_table2, table2, ARRAY_SIZE(init_table2)); - setup_hazard_table(init_table3, table3, ARRAY_SIZE(init_table3)); -} diff --git a/drivers/gpu/drm/via/via_verifier.h b/drivers/gpu/drm/via/via_verifier.h deleted file mode 100644 index 26b6d361ab95..000000000000 --- a/drivers/gpu/drm/via/via_verifier.h +++ /dev/null @@ -1,62 +0,0 @@ -/* - * Copyright 2004 The Unichrome Project. All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sub license, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the - * next paragraph) shall be included in all copies or substantial portions - * of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL - * THE UNICHROME PROJECT, AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - * - * Author: Thomas Hellström 2004. - */ - -#ifndef _VIA_VERIFIER_H_ -#define _VIA_VERIFIER_H_ - -typedef enum { - no_sequence = 0, - z_address, - dest_address, - tex_address -} drm_via_sequence_t; - -typedef struct { - unsigned texture; - uint32_t z_addr; - uint32_t d_addr; - uint32_t t_addr[2][10]; - uint32_t pitch[2][10]; - uint32_t height[2][10]; - uint32_t tex_level_lo[2]; - uint32_t tex_level_hi[2]; - uint32_t tex_palette_size[2]; - uint32_t tex_npot[2]; - drm_via_sequence_t unfinished; - int agp_texture; - int multitex; - struct drm_device *dev; - drm_local_map_t *map_cache; - uint32_t vertex_count; - int agp; - const uint32_t *buf_start; -} drm_via_state_t; - -extern int via_verify_command_stream(const uint32_t *buf, unsigned int size, - struct drm_device *dev, int agp); -extern int via_parse_command_stream(struct drm_device *dev, const uint32_t *buf, - unsigned int size); - -#endif |