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 | 31 |
1 files changed, 27 insertions, 4 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 index 61f64a295f06..6943bf679b42 100644 --- a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c +++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c @@ -46,8 +46,8 @@ /* Context size. */ #define DMUB_CONTEXT_SIZE (512 * 1024) -/* Mailbox size */ -#define DMUB_MAILBOX_SIZE (DMUB_RB_SIZE) +/* Mailbox size : Ring buffers are required for both inbox and outbox */ +#define DMUB_MAILBOX_SIZE ((2 * DMUB_RB_SIZE)) /* Default state size if meta is absent. */ #define DMUB_FW_STATE_SIZE (64 * 1024) @@ -157,6 +157,11 @@ static bool dmub_srv_hw_setup(struct dmub_srv *dmub, enum dmub_asic asic) funcs->enable_dmub_boot_options = dmub_dcn20_enable_dmub_boot_options; funcs->skip_dmub_panel_power_sequence = dmub_dcn20_skip_dmub_panel_power_sequence; + // Out mailbox register access functions for RN and above + funcs->setup_out_mailbox = dmub_dcn20_setup_out_mailbox; + funcs->get_outbox1_wptr = dmub_dcn20_get_outbox1_wptr; + funcs->set_outbox1_rptr = dmub_dcn20_set_outbox1_rptr; + if (asic == DMUB_ASIC_DCN21) { dmub->regs = &dmub_srv_dcn21_regs; @@ -397,7 +402,7 @@ enum dmub_status dmub_srv_hw_init(struct dmub_srv *dmub, struct dmub_rb_init_params rb_params; struct dmub_window cw0, cw1, cw2, cw3, cw4, cw5, cw6; - struct dmub_region inbox1; + struct dmub_region inbox1, outbox1; if (!dmub->sw_init) return DMUB_STATUS_INVALID; @@ -444,8 +449,17 @@ enum dmub_status dmub_srv_hw_init(struct dmub_srv *dmub, cw4.region.base = DMUB_CW4_BASE; cw4.region.top = cw4.region.base + mail_fb->size; + /** + * Doubled the mailbox region to accomodate inbox and outbox. + * Note: Currently, currently total mailbox size is 16KB. It is split + * equally into 8KB between inbox and outbox. If this config is + * changed, then uncached base address configuration of outbox1 + * has to be updated in funcs->setup_out_mailbox. + */ inbox1.base = cw4.region.base; - inbox1.top = cw4.region.top; + inbox1.top = cw4.region.base + DMUB_RB_SIZE; + outbox1.base = inbox1.top; + outbox1.top = cw4.region.top; cw5.offset.quad_part = tracebuff_fb->gpu_addr; cw5.region.base = DMUB_CW5_BASE; @@ -465,6 +479,8 @@ enum dmub_status dmub_srv_hw_init(struct dmub_srv *dmub, if (dmub->hw_funcs.setup_mailbox) dmub->hw_funcs.setup_mailbox(dmub, &inbox1); + if (dmub->hw_funcs.setup_out_mailbox) + dmub->hw_funcs.setup_out_mailbox(dmub, &outbox1); } if (mail_fb) { @@ -474,6 +490,13 @@ enum dmub_status dmub_srv_hw_init(struct dmub_srv *dmub, rb_params.capacity = DMUB_RB_SIZE; dmub_rb_init(&dmub->inbox1_rb, &rb_params); + + // Initialize outbox1 ring buffer + rb_params.ctx = dmub; + rb_params.base_address = (void *) ((uint64_t) (mail_fb->cpu_addr) + DMUB_RB_SIZE); + rb_params.capacity = DMUB_RB_SIZE; + dmub_rb_init(&dmub->outbox1_rb, &rb_params); + } if (dmub->hw_funcs.reset_release) |