diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c | 524 |
1 files changed, 524 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c new file mode 100644 index 000000000000..85a518bf8a76 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c @@ -0,0 +1,524 @@ +/* + * Copyright 2019 Advanced Micro Devices, Inc. + * + * 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, sublicense, + * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(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. + * + * Authors: AMD + * + */ + +#include "../inc/dmub_srv.h" +#include "dmub_dcn20.h" +#include "dmub_dcn21.h" +#include "dmub_fw_meta.h" +#include "os_types.h" +/* + * Note: the DMUB service is standalone. No additional headers should be + * added below or above this line unless they reside within the DMUB + * folder. + */ + +/* Alignment for framebuffer memory. */ +#define DMUB_FB_ALIGNMENT (1024 * 1024) + +/* Stack size. */ +#define DMUB_STACK_SIZE (128 * 1024) + +/* Context size. */ +#define DMUB_CONTEXT_SIZE (512 * 1024) + +/* Mailbox size */ +#define DMUB_MAILBOX_SIZE (DMUB_RB_SIZE) + +/* Default state size if meta is absent. */ +#define DMUB_FW_STATE_SIZE (1024) + +/* Default tracebuffer size if meta is absent. */ +#define DMUB_TRACE_BUFFER_SIZE (1024) + +/* Number of windows in use. */ +#define DMUB_NUM_WINDOWS (DMUB_WINDOW_6_FW_STATE + 1) +/* Base addresses. */ + +#define DMUB_CW0_BASE (0x60000000) +#define DMUB_CW1_BASE (0x61000000) +#define DMUB_CW3_BASE (0x63000000) +#define DMUB_CW5_BASE (0x65000000) +#define DMUB_CW6_BASE (0x66000000) + +static inline uint32_t dmub_align(uint32_t val, uint32_t factor) +{ + return (val + factor - 1) / factor * factor; +} + +static void dmub_flush_buffer_mem(const struct dmub_fb *fb) +{ + const uint8_t *base = (const uint8_t *)fb->cpu_addr; + uint8_t buf[64]; + uint32_t pos, end; + + /** + * Read 64-byte chunks since we don't want to store a + * large temporary buffer for this purpose. + */ + end = fb->size / sizeof(buf) * sizeof(buf); + + for (pos = 0; pos < end; pos += sizeof(buf)) + dmub_memcpy(buf, base + pos, sizeof(buf)); + + /* Read anything leftover into the buffer. */ + if (end < fb->size) + dmub_memcpy(buf, base + pos, fb->size - end); +} + +static const struct dmub_fw_meta_info * +dmub_get_fw_meta_info(const uint8_t *fw_bss_data, uint32_t fw_bss_data_size) +{ + const union dmub_fw_meta *meta; + + if (fw_bss_data == NULL) + return NULL; + + if (fw_bss_data_size < sizeof(union dmub_fw_meta) + DMUB_FW_META_OFFSET) + return NULL; + + meta = (const union dmub_fw_meta *)(fw_bss_data + fw_bss_data_size - + DMUB_FW_META_OFFSET - + sizeof(union dmub_fw_meta)); + + if (meta->info.magic_value != DMUB_FW_META_MAGIC) + return NULL; + + return &meta->info; +} + +static bool dmub_srv_hw_setup(struct dmub_srv *dmub, enum dmub_asic asic) +{ + struct dmub_srv_hw_funcs *funcs = &dmub->hw_funcs; + + switch (asic) { + case DMUB_ASIC_DCN20: + case DMUB_ASIC_DCN21: + dmub->regs = &dmub_srv_dcn20_regs; + + funcs->reset = dmub_dcn20_reset; + funcs->reset_release = dmub_dcn20_reset_release; + funcs->backdoor_load = dmub_dcn20_backdoor_load; + funcs->setup_windows = dmub_dcn20_setup_windows; + funcs->setup_mailbox = dmub_dcn20_setup_mailbox; + funcs->get_inbox1_rptr = dmub_dcn20_get_inbox1_rptr; + funcs->set_inbox1_wptr = dmub_dcn20_set_inbox1_wptr; + funcs->is_supported = dmub_dcn20_is_supported; + funcs->is_hw_init = dmub_dcn20_is_hw_init; + + if (asic == DMUB_ASIC_DCN21) { + dmub->regs = &dmub_srv_dcn21_regs; + + funcs->is_auto_load_done = dmub_dcn21_is_auto_load_done; + funcs->is_phy_init = dmub_dcn21_is_phy_init; + } + break; + + default: + return false; + } + + return true; +} + +enum dmub_status dmub_srv_create(struct dmub_srv *dmub, + const struct dmub_srv_create_params *params) +{ + enum dmub_status status = DMUB_STATUS_OK; + + dmub_memset(dmub, 0, sizeof(*dmub)); + + dmub->funcs = params->funcs; + dmub->user_ctx = params->user_ctx; + dmub->asic = params->asic; + dmub->is_virtual = params->is_virtual; + + /* Setup asic dependent hardware funcs. */ + if (!dmub_srv_hw_setup(dmub, params->asic)) { + status = DMUB_STATUS_INVALID; + goto cleanup; + } + + /* Override (some) hardware funcs based on user params. */ + if (params->hw_funcs) { + if (params->hw_funcs->get_inbox1_rptr) + dmub->hw_funcs.get_inbox1_rptr = + params->hw_funcs->get_inbox1_rptr; + + if (params->hw_funcs->set_inbox1_wptr) + dmub->hw_funcs.set_inbox1_wptr = + params->hw_funcs->set_inbox1_wptr; + + if (params->hw_funcs->is_supported) + dmub->hw_funcs.is_supported = + params->hw_funcs->is_supported; + } + + /* Sanity checks for required hw func pointers. */ + if (!dmub->hw_funcs.get_inbox1_rptr || + !dmub->hw_funcs.set_inbox1_wptr) { + status = DMUB_STATUS_INVALID; + goto cleanup; + } + +cleanup: + if (status == DMUB_STATUS_OK) + dmub->sw_init = true; + else + dmub_srv_destroy(dmub); + + return status; +} + +void dmub_srv_destroy(struct dmub_srv *dmub) +{ + dmub_memset(dmub, 0, sizeof(*dmub)); +} + +enum dmub_status +dmub_srv_calc_region_info(struct dmub_srv *dmub, + const struct dmub_srv_region_params *params, + struct dmub_srv_region_info *out) +{ + struct dmub_region *inst = &out->regions[DMUB_WINDOW_0_INST_CONST]; + struct dmub_region *stack = &out->regions[DMUB_WINDOW_1_STACK]; + struct dmub_region *data = &out->regions[DMUB_WINDOW_2_BSS_DATA]; + struct dmub_region *bios = &out->regions[DMUB_WINDOW_3_VBIOS]; + struct dmub_region *mail = &out->regions[DMUB_WINDOW_4_MAILBOX]; + struct dmub_region *trace_buff = &out->regions[DMUB_WINDOW_5_TRACEBUFF]; + struct dmub_region *fw_state = &out->regions[DMUB_WINDOW_6_FW_STATE]; + const struct dmub_fw_meta_info *fw_info; + uint32_t fw_state_size = DMUB_FW_STATE_SIZE; + uint32_t trace_buffer_size = DMUB_TRACE_BUFFER_SIZE; + + if (!dmub->sw_init) + return DMUB_STATUS_INVALID; + + memset(out, 0, sizeof(*out)); + + out->num_regions = DMUB_NUM_WINDOWS; + + inst->base = 0x0; + inst->top = inst->base + params->inst_const_size; + + data->base = dmub_align(inst->top, 256); + data->top = data->base + params->bss_data_size; + + /* + * All cache windows below should be aligned to the size + * of the DMCUB cache line, 64 bytes. + */ + + stack->base = dmub_align(data->top, 256); + stack->top = stack->base + DMUB_STACK_SIZE + DMUB_CONTEXT_SIZE; + + bios->base = dmub_align(stack->top, 256); + bios->top = bios->base + params->vbios_size; + + mail->base = dmub_align(bios->top, 256); + mail->top = mail->base + DMUB_MAILBOX_SIZE; + + fw_info = dmub_get_fw_meta_info(params->fw_bss_data, + params->bss_data_size); + + if (fw_info) { + fw_state_size = fw_info->fw_region_size; + trace_buffer_size = fw_info->trace_buffer_size; + } + + trace_buff->base = dmub_align(mail->top, 256); + trace_buff->top = trace_buff->base + dmub_align(trace_buffer_size, 64); + + fw_state->base = dmub_align(trace_buff->top, 256); + fw_state->top = fw_state->base + dmub_align(fw_state_size, 64); + + out->fb_size = dmub_align(fw_state->top, 4096); + + return DMUB_STATUS_OK; +} + +enum dmub_status dmub_srv_calc_fb_info(struct dmub_srv *dmub, + const struct dmub_srv_fb_params *params, + struct dmub_srv_fb_info *out) +{ + uint8_t *cpu_base; + uint64_t gpu_base; + uint32_t i; + + if (!dmub->sw_init) + return DMUB_STATUS_INVALID; + + memset(out, 0, sizeof(*out)); + + if (params->region_info->num_regions != DMUB_NUM_WINDOWS) + return DMUB_STATUS_INVALID; + + cpu_base = (uint8_t *)params->cpu_addr; + gpu_base = params->gpu_addr; + + for (i = 0; i < DMUB_NUM_WINDOWS; ++i) { + const struct dmub_region *reg = + ¶ms->region_info->regions[i]; + + out->fb[i].cpu_addr = cpu_base + reg->base; + out->fb[i].gpu_addr = gpu_base + reg->base; + out->fb[i].size = reg->top - reg->base; + } + + out->num_fb = DMUB_NUM_WINDOWS; + + return DMUB_STATUS_OK; +} + +enum dmub_status dmub_srv_has_hw_support(struct dmub_srv *dmub, + bool *is_supported) +{ + *is_supported = false; + + if (!dmub->sw_init) + return DMUB_STATUS_INVALID; + + if (dmub->hw_funcs.is_supported) + *is_supported = dmub->hw_funcs.is_supported(dmub); + + return DMUB_STATUS_OK; +} + +enum dmub_status dmub_srv_is_hw_init(struct dmub_srv *dmub, bool *is_hw_init) +{ + *is_hw_init = false; + + if (!dmub->sw_init) + return DMUB_STATUS_INVALID; + + if (!dmub->hw_init) + return DMUB_STATUS_OK; + + if (dmub->hw_funcs.is_hw_init) + *is_hw_init = dmub->hw_funcs.is_hw_init(dmub); + + return DMUB_STATUS_OK; +} + +enum dmub_status dmub_srv_hw_init(struct dmub_srv *dmub, + const struct dmub_srv_hw_params *params) +{ + struct dmub_fb *inst_fb = params->fb[DMUB_WINDOW_0_INST_CONST]; + struct dmub_fb *stack_fb = params->fb[DMUB_WINDOW_1_STACK]; + struct dmub_fb *data_fb = params->fb[DMUB_WINDOW_2_BSS_DATA]; + struct dmub_fb *bios_fb = params->fb[DMUB_WINDOW_3_VBIOS]; + struct dmub_fb *mail_fb = params->fb[DMUB_WINDOW_4_MAILBOX]; + struct dmub_fb *tracebuff_fb = params->fb[DMUB_WINDOW_5_TRACEBUFF]; + struct dmub_fb *fw_state_fb = params->fb[DMUB_WINDOW_6_FW_STATE]; + + struct dmub_rb_init_params rb_params; + struct dmub_window cw0, cw1, cw2, cw3, cw4, cw5, cw6; + struct dmub_region inbox1; + + if (!dmub->sw_init) + return DMUB_STATUS_INVALID; + + dmub->fb_base = params->fb_base; + dmub->fb_offset = params->fb_offset; + dmub->psp_version = params->psp_version; + + if (inst_fb && data_fb) { + cw0.offset.quad_part = inst_fb->gpu_addr; + cw0.region.base = DMUB_CW0_BASE; + cw0.region.top = cw0.region.base + inst_fb->size - 1; + + cw1.offset.quad_part = stack_fb->gpu_addr; + cw1.region.base = DMUB_CW1_BASE; + cw1.region.top = cw1.region.base + stack_fb->size - 1; + + /** + * Read back all the instruction memory so we don't hang the + * DMCUB when backdoor loading if the write from x86 hasn't been + * flushed yet. This only occurs in backdoor loading. + */ + dmub_flush_buffer_mem(inst_fb); + + if (params->load_inst_const && dmub->hw_funcs.backdoor_load) + dmub->hw_funcs.backdoor_load(dmub, &cw0, &cw1); + } + + if (dmub->hw_funcs.reset) + dmub->hw_funcs.reset(dmub); + + if (inst_fb && data_fb && bios_fb && mail_fb && tracebuff_fb && + fw_state_fb) { + cw2.offset.quad_part = data_fb->gpu_addr; + cw2.region.base = DMUB_CW0_BASE + inst_fb->size; + cw2.region.top = cw2.region.base + data_fb->size; + + cw3.offset.quad_part = bios_fb->gpu_addr; + cw3.region.base = DMUB_CW3_BASE; + cw3.region.top = cw3.region.base + bios_fb->size; + + cw4.offset.quad_part = mail_fb->gpu_addr; + cw4.region.base = cw3.region.top + 1; + cw4.region.top = cw4.region.base + mail_fb->size; + + inbox1.base = cw4.region.base; + inbox1.top = cw4.region.top; + + cw5.offset.quad_part = tracebuff_fb->gpu_addr; + cw5.region.base = DMUB_CW5_BASE; + cw5.region.top = cw5.region.base + tracebuff_fb->size; + + cw6.offset.quad_part = fw_state_fb->gpu_addr; + cw6.region.base = DMUB_CW6_BASE; + cw6.region.top = cw6.region.base + fw_state_fb->size; + + dmub->fw_state = fw_state_fb->cpu_addr; + + if (dmub->hw_funcs.setup_windows) + dmub->hw_funcs.setup_windows(dmub, &cw2, &cw3, &cw4, + &cw5, &cw6); + + if (dmub->hw_funcs.setup_mailbox) + dmub->hw_funcs.setup_mailbox(dmub, &inbox1); + } + + if (mail_fb) { + dmub_memset(&rb_params, 0, sizeof(rb_params)); + rb_params.ctx = dmub; + rb_params.base_address = mail_fb->cpu_addr; + rb_params.capacity = DMUB_RB_SIZE; + + dmub_rb_init(&dmub->inbox1_rb, &rb_params); + } + + if (dmub->hw_funcs.reset_release) + dmub->hw_funcs.reset_release(dmub); + + dmub->hw_init = true; + + return DMUB_STATUS_OK; +} + +enum dmub_status dmub_srv_hw_reset(struct dmub_srv *dmub) +{ + if (!dmub->sw_init) + return DMUB_STATUS_INVALID; + + if (dmub->hw_init == false) + return DMUB_STATUS_OK; + + if (dmub->hw_funcs.reset) + dmub->hw_funcs.reset(dmub); + + dmub->hw_init = false; + + return DMUB_STATUS_OK; +} + +enum dmub_status dmub_srv_cmd_queue(struct dmub_srv *dmub, + const struct dmub_cmd_header *cmd) +{ + if (!dmub->hw_init) + return DMUB_STATUS_INVALID; + + if (dmub_rb_push_front(&dmub->inbox1_rb, cmd)) + return DMUB_STATUS_OK; + + return DMUB_STATUS_QUEUE_FULL; +} + +enum dmub_status dmub_srv_cmd_execute(struct dmub_srv *dmub) +{ + if (!dmub->hw_init) + return DMUB_STATUS_INVALID; + + /** + * Read back all the queued commands to ensure that they've + * been flushed to framebuffer memory. Otherwise DMCUB might + * read back stale, fully invalid or partially invalid data. + */ + dmub_rb_flush_pending(&dmub->inbox1_rb); + + dmub->hw_funcs.set_inbox1_wptr(dmub, dmub->inbox1_rb.wrpt); + return DMUB_STATUS_OK; +} + +enum dmub_status dmub_srv_wait_for_auto_load(struct dmub_srv *dmub, + uint32_t timeout_us) +{ + uint32_t i; + + if (!dmub->hw_init) + return DMUB_STATUS_INVALID; + + if (!dmub->hw_funcs.is_auto_load_done) + return DMUB_STATUS_OK; + + for (i = 0; i <= timeout_us; i += 100) { + if (dmub->hw_funcs.is_auto_load_done(dmub)) + return DMUB_STATUS_OK; + + udelay(100); + } + + return DMUB_STATUS_TIMEOUT; +} + +enum dmub_status dmub_srv_wait_for_phy_init(struct dmub_srv *dmub, + uint32_t timeout_us) +{ + uint32_t i = 0; + + if (!dmub->hw_init) + return DMUB_STATUS_INVALID; + + if (!dmub->hw_funcs.is_phy_init) + return DMUB_STATUS_OK; + + for (i = 0; i <= timeout_us; i += 10) { + if (dmub->hw_funcs.is_phy_init(dmub)) + return DMUB_STATUS_OK; + + udelay(10); + } + + return DMUB_STATUS_TIMEOUT; +} + +enum dmub_status dmub_srv_wait_for_idle(struct dmub_srv *dmub, + uint32_t timeout_us) +{ + uint32_t i; + + if (!dmub->hw_init) + return DMUB_STATUS_INVALID; + + for (i = 0; i <= timeout_us; ++i) { + dmub->inbox1_rb.rptr = dmub->hw_funcs.get_inbox1_rptr(dmub); + if (dmub_rb_empty(&dmub->inbox1_rb)) + return DMUB_STATUS_OK; + + udelay(1); + } + + return DMUB_STATUS_TIMEOUT; +} |