Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Stanimir Varbanov | 6580 | 99.59% | 7 | 70.00% |
Vikash Garodia | 15 | 0.23% | 1 | 10.00% |
Malathi Gottam | 10 | 0.15% | 1 | 10.00% |
Thomas Gleixner | 2 | 0.03% | 1 | 10.00% |
Total | 6607 | 10 |
// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2012-2016, The Linux Foundation. All rights reserved. * Copyright (C) 2017 Linaro Ltd. */ #include <linux/delay.h> #include <linux/device.h> #include <linux/dma-mapping.h> #include <linux/interrupt.h> #include <linux/iopoll.h> #include <linux/kernel.h> #include <linux/slab.h> #include "core.h" #include "hfi_cmds.h" #include "hfi_msgs.h" #include "hfi_venus.h" #include "hfi_venus_io.h" #include "firmware.h" #define HFI_MASK_QHDR_TX_TYPE 0xff000000 #define HFI_MASK_QHDR_RX_TYPE 0x00ff0000 #define HFI_MASK_QHDR_PRI_TYPE 0x0000ff00 #define HFI_MASK_QHDR_ID_TYPE 0x000000ff #define HFI_HOST_TO_CTRL_CMD_Q 0 #define HFI_CTRL_TO_HOST_MSG_Q 1 #define HFI_CTRL_TO_HOST_DBG_Q 2 #define HFI_MASK_QHDR_STATUS 0x000000ff #define IFACEQ_NUM 3 #define IFACEQ_CMD_IDX 0 #define IFACEQ_MSG_IDX 1 #define IFACEQ_DBG_IDX 2 #define IFACEQ_MAX_BUF_COUNT 50 #define IFACEQ_MAX_PARALLEL_CLNTS 16 #define IFACEQ_DFLT_QHDR 0x01010000 #define POLL_INTERVAL_US 50 #define IFACEQ_MAX_PKT_SIZE 1024 #define IFACEQ_MED_PKT_SIZE 768 #define IFACEQ_MIN_PKT_SIZE 8 #define IFACEQ_VAR_SMALL_PKT_SIZE 100 #define IFACEQ_VAR_LARGE_PKT_SIZE 512 #define IFACEQ_VAR_HUGE_PKT_SIZE (1024 * 12) struct hfi_queue_table_header { u32 version; u32 size; u32 qhdr0_offset; u32 qhdr_size; u32 num_q; u32 num_active_q; }; struct hfi_queue_header { u32 status; u32 start_addr; u32 type; u32 q_size; u32 pkt_size; u32 pkt_drop_cnt; u32 rx_wm; u32 tx_wm; u32 rx_req; u32 tx_req; u32 rx_irq_status; u32 tx_irq_status; u32 read_idx; u32 write_idx; }; #define IFACEQ_TABLE_SIZE \ (sizeof(struct hfi_queue_table_header) + \ sizeof(struct hfi_queue_header) * IFACEQ_NUM) #define IFACEQ_QUEUE_SIZE (IFACEQ_MAX_PKT_SIZE * \ IFACEQ_MAX_BUF_COUNT * IFACEQ_MAX_PARALLEL_CLNTS) #define IFACEQ_GET_QHDR_START_ADDR(ptr, i) \ (void *)(((ptr) + sizeof(struct hfi_queue_table_header)) + \ ((i) * sizeof(struct hfi_queue_header))) #define QDSS_SIZE SZ_4K #define SFR_SIZE SZ_4K #define QUEUE_SIZE \ (IFACEQ_TABLE_SIZE + (IFACEQ_QUEUE_SIZE * IFACEQ_NUM)) #define ALIGNED_QDSS_SIZE ALIGN(QDSS_SIZE, SZ_4K) #define ALIGNED_SFR_SIZE ALIGN(SFR_SIZE, SZ_4K) #define ALIGNED_QUEUE_SIZE ALIGN(QUEUE_SIZE, SZ_4K) #define SHARED_QSIZE ALIGN(ALIGNED_SFR_SIZE + ALIGNED_QUEUE_SIZE + \ ALIGNED_QDSS_SIZE, SZ_1M) struct mem_desc { dma_addr_t da; /* device address */ void *kva; /* kernel virtual address */ u32 size; unsigned long attrs; }; struct iface_queue { struct hfi_queue_header *qhdr; struct mem_desc qmem; }; enum venus_state { VENUS_STATE_DEINIT = 1, VENUS_STATE_INIT, }; struct venus_hfi_device { struct venus_core *core; u32 irq_status; u32 last_packet_type; bool power_enabled; bool suspended; enum venus_state state; /* serialize read / write to the shared memory */ struct mutex lock; struct completion pwr_collapse_prep; struct completion release_resource; struct mem_desc ifaceq_table; struct mem_desc sfr; struct iface_queue queues[IFACEQ_NUM]; u8 pkt_buf[IFACEQ_VAR_HUGE_PKT_SIZE]; u8 dbg_buf[IFACEQ_VAR_HUGE_PKT_SIZE]; }; static bool venus_pkt_debug; static int venus_fw_debug = HFI_DEBUG_MSG_ERROR | HFI_DEBUG_MSG_FATAL; static bool venus_sys_idle_indicator; static bool venus_fw_low_power_mode = true; static int venus_hw_rsp_timeout = 1000; static bool venus_fw_coverage; static void venus_set_state(struct venus_hfi_device *hdev, enum venus_state state) { mutex_lock(&hdev->lock); hdev->state = state; mutex_unlock(&hdev->lock); } static bool venus_is_valid_state(struct venus_hfi_device *hdev) { return hdev->state != VENUS_STATE_DEINIT; } static void venus_dump_packet(struct venus_hfi_device *hdev, const void *packet) { size_t pkt_size = *(u32 *)packet; if (!venus_pkt_debug) return; print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 1, packet, pkt_size, true); } static int venus_write_queue(struct venus_hfi_device *hdev, struct iface_queue *queue, void *packet, u32 *rx_req) { struct hfi_queue_header *qhdr; u32 dwords, new_wr_idx; u32 empty_space, rd_idx, wr_idx, qsize; u32 *wr_ptr; if (!queue->qmem.kva) return -EINVAL; qhdr = queue->qhdr; if (!qhdr) return -EINVAL; venus_dump_packet(hdev, packet); dwords = (*(u32 *)packet) >> 2; if (!dwords) return -EINVAL; rd_idx = qhdr->read_idx; wr_idx = qhdr->write_idx; qsize = qhdr->q_size; /* ensure rd/wr indices's are read from memory */ rmb(); if (wr_idx >= rd_idx) empty_space = qsize - (wr_idx - rd_idx); else empty_space = rd_idx - wr_idx; if (empty_space <= dwords) { qhdr->tx_req = 1; /* ensure tx_req is updated in memory */ wmb(); return -ENOSPC; } qhdr->tx_req = 0; /* ensure tx_req is updated in memory */ wmb(); new_wr_idx = wr_idx + dwords; wr_ptr = (u32 *)(queue->qmem.kva + (wr_idx << 2)); if (new_wr_idx < qsize) { memcpy(wr_ptr, packet, dwords << 2); } else { size_t len; new_wr_idx -= qsize; len = (dwords - new_wr_idx) << 2; memcpy(wr_ptr, packet, len); memcpy(queue->qmem.kva, packet + len, new_wr_idx << 2); } /* make sure packet is written before updating the write index */ wmb(); qhdr->write_idx = new_wr_idx; *rx_req = qhdr->rx_req ? 1 : 0; /* make sure write index is updated before an interrupt is raised */ mb(); return 0; } static int venus_read_queue(struct venus_hfi_device *hdev, struct iface_queue *queue, void *pkt, u32 *tx_req) { struct hfi_queue_header *qhdr; u32 dwords, new_rd_idx; u32 rd_idx, wr_idx, type, qsize; u32 *rd_ptr; u32 recv_request = 0; int ret = 0; if (!queue->qmem.kva) return -EINVAL; qhdr = queue->qhdr; if (!qhdr) return -EINVAL; type = qhdr->type; rd_idx = qhdr->read_idx; wr_idx = qhdr->write_idx; qsize = qhdr->q_size; /* make sure data is valid before using it */ rmb(); /* * Do not set receive request for debug queue, if set, Venus generates * interrupt for debug messages even when there is no response message * available. In general debug queue will not become full as it is being * emptied out for every interrupt from Venus. Venus will anyway * generates interrupt if it is full. */ if (type & HFI_CTRL_TO_HOST_MSG_Q) recv_request = 1; if (rd_idx == wr_idx) { qhdr->rx_req = recv_request; *tx_req = 0; /* update rx_req field in memory */ wmb(); return -ENODATA; } rd_ptr = (u32 *)(queue->qmem.kva + (rd_idx << 2)); dwords = *rd_ptr >> 2; if (!dwords) return -EINVAL; new_rd_idx = rd_idx + dwords; if (((dwords << 2) <= IFACEQ_VAR_HUGE_PKT_SIZE) && rd_idx <= qsize) { if (new_rd_idx < qsize) { memcpy(pkt, rd_ptr, dwords << 2); } else { size_t len; new_rd_idx -= qsize; len = (dwords - new_rd_idx) << 2; memcpy(pkt, rd_ptr, len); memcpy(pkt + len, queue->qmem.kva, new_rd_idx << 2); } } else { /* bad packet received, dropping */ new_rd_idx = qhdr->write_idx; ret = -EBADMSG; } /* ensure the packet is read before updating read index */ rmb(); qhdr->read_idx = new_rd_idx; /* ensure updating read index */ wmb(); rd_idx = qhdr->read_idx; wr_idx = qhdr->write_idx; /* ensure rd/wr indices are read from memory */ rmb(); if (rd_idx != wr_idx) qhdr->rx_req = 0; else qhdr->rx_req = recv_request; *tx_req = qhdr->tx_req ? 1 : 0; /* ensure rx_req is stored to memory and tx_req is loaded from memory */ mb(); venus_dump_packet(hdev, pkt); return ret; } static int venus_alloc(struct venus_hfi_device *hdev, struct mem_desc *desc, u32 size) { struct device *dev = hdev->core->dev; desc->attrs = DMA_ATTR_WRITE_COMBINE; desc->size = ALIGN(size, SZ_4K); desc->kva = dma_alloc_attrs(dev, desc->size, &desc->da, GFP_KERNEL, desc->attrs); if (!desc->kva) return -ENOMEM; return 0; } static void venus_free(struct venus_hfi_device *hdev, struct mem_desc *mem) { struct device *dev = hdev->core->dev; dma_free_attrs(dev, mem->size, mem->kva, mem->da, mem->attrs); } static void venus_writel(struct venus_hfi_device *hdev, u32 reg, u32 value) { writel(value, hdev->core->base + reg); } static u32 venus_readl(struct venus_hfi_device *hdev, u32 reg) { return readl(hdev->core->base + reg); } static void venus_set_registers(struct venus_hfi_device *hdev) { const struct venus_resources *res = hdev->core->res; const struct reg_val *tbl = res->reg_tbl; unsigned int count = res->reg_tbl_size; unsigned int i; for (i = 0; i < count; i++) venus_writel(hdev, tbl[i].reg, tbl[i].value); } static void venus_soft_int(struct venus_hfi_device *hdev) { venus_writel(hdev, CPU_IC_SOFTINT, BIT(CPU_IC_SOFTINT_H2A_SHIFT)); } static int venus_iface_cmdq_write_nolock(struct venus_hfi_device *hdev, void *pkt) { struct device *dev = hdev->core->dev; struct hfi_pkt_hdr *cmd_packet; struct iface_queue *queue; u32 rx_req; int ret; if (!venus_is_valid_state(hdev)) return -EINVAL; cmd_packet = (struct hfi_pkt_hdr *)pkt; hdev->last_packet_type = cmd_packet->pkt_type; queue = &hdev->queues[IFACEQ_CMD_IDX]; ret = venus_write_queue(hdev, queue, pkt, &rx_req); if (ret) { dev_err(dev, "write to iface cmd queue failed (%d)\n", ret); return ret; } if (rx_req) venus_soft_int(hdev); return 0; } static int venus_iface_cmdq_write(struct venus_hfi_device *hdev, void *pkt) { int ret; mutex_lock(&hdev->lock); ret = venus_iface_cmdq_write_nolock(hdev, pkt); mutex_unlock(&hdev->lock); return ret; } static int venus_hfi_core_set_resource(struct venus_core *core, u32 id, u32 size, u32 addr, void *cookie) { struct venus_hfi_device *hdev = to_hfi_priv(core); struct hfi_sys_set_resource_pkt *pkt; u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; int ret; if (id == VIDC_RESOURCE_NONE) return 0; pkt = (struct hfi_sys_set_resource_pkt *)packet; ret = pkt_sys_set_resource(pkt, id, size, addr, cookie); if (ret) return ret; ret = venus_iface_cmdq_write(hdev, pkt); if (ret) return ret; return 0; } static int venus_boot_core(struct venus_hfi_device *hdev) { struct device *dev = hdev->core->dev; static const unsigned int max_tries = 100; u32 ctrl_status = 0; unsigned int count = 0; int ret = 0; venus_writel(hdev, VIDC_CTRL_INIT, BIT(VIDC_CTRL_INIT_CTRL_SHIFT)); venus_writel(hdev, WRAPPER_INTR_MASK, WRAPPER_INTR_MASK_A2HVCODEC_MASK); venus_writel(hdev, CPU_CS_SCIACMDARG3, 1); while (!ctrl_status && count < max_tries) { ctrl_status = venus_readl(hdev, CPU_CS_SCIACMDARG0); if ((ctrl_status & CPU_CS_SCIACMDARG0_ERROR_STATUS_MASK) == 4) { dev_err(dev, "invalid setting for UC_REGION\n"); ret = -EINVAL; break; } usleep_range(500, 1000); count++; } if (count >= max_tries) ret = -ETIMEDOUT; return ret; } static u32 venus_hwversion(struct venus_hfi_device *hdev) { struct device *dev = hdev->core->dev; u32 ver = venus_readl(hdev, WRAPPER_HW_VERSION); u32 major, minor, step; major = ver & WRAPPER_HW_VERSION_MAJOR_VERSION_MASK; major = major >> WRAPPER_HW_VERSION_MAJOR_VERSION_SHIFT; minor = ver & WRAPPER_HW_VERSION_MINOR_VERSION_MASK; minor = minor >> WRAPPER_HW_VERSION_MINOR_VERSION_SHIFT; step = ver & WRAPPER_HW_VERSION_STEP_VERSION_MASK; dev_dbg(dev, "venus hw version %x.%x.%x\n", major, minor, step); return major; } static int venus_run(struct venus_hfi_device *hdev) { struct device *dev = hdev->core->dev; int ret; /* * Re-program all of the registers that get reset as a result of * regulator_disable() and _enable() */ venus_set_registers(hdev); venus_writel(hdev, UC_REGION_ADDR, hdev->ifaceq_table.da); venus_writel(hdev, UC_REGION_SIZE, SHARED_QSIZE); venus_writel(hdev, CPU_CS_SCIACMDARG2, hdev->ifaceq_table.da); venus_writel(hdev, CPU_CS_SCIACMDARG1, 0x01); if (hdev->sfr.da) venus_writel(hdev, SFR_ADDR, hdev->sfr.da); ret = venus_boot_core(hdev); if (ret) { dev_err(dev, "failed to reset venus core\n"); return ret; } venus_hwversion(hdev); return 0; } static int venus_halt_axi(struct venus_hfi_device *hdev) { void __iomem *base = hdev->core->base; struct device *dev = hdev->core->dev; u32 val; int ret; if (IS_V4(hdev->core)) { val = venus_readl(hdev, WRAPPER_CPU_AXI_HALT); val |= WRAPPER_CPU_AXI_HALT_HALT; venus_writel(hdev, WRAPPER_CPU_AXI_HALT, val); ret = readl_poll_timeout(base + WRAPPER_CPU_AXI_HALT_STATUS, val, val & WRAPPER_CPU_AXI_HALT_STATUS_IDLE, POLL_INTERVAL_US, VBIF_AXI_HALT_ACK_TIMEOUT_US); if (ret) { dev_err(dev, "AXI bus port halt timeout\n"); return ret; } return 0; } /* Halt AXI and AXI IMEM VBIF Access */ val = venus_readl(hdev, VBIF_AXI_HALT_CTRL0); val |= VBIF_AXI_HALT_CTRL0_HALT_REQ; venus_writel(hdev, VBIF_AXI_HALT_CTRL0, val); /* Request for AXI bus port halt */ ret = readl_poll_timeout(base + VBIF_AXI_HALT_CTRL1, val, val & VBIF_AXI_HALT_CTRL1_HALT_ACK, POLL_INTERVAL_US, VBIF_AXI_HALT_ACK_TIMEOUT_US); if (ret) { dev_err(dev, "AXI bus port halt timeout\n"); return ret; } return 0; } static int venus_power_off(struct venus_hfi_device *hdev) { int ret; if (!hdev->power_enabled) return 0; ret = venus_set_hw_state_suspend(hdev->core); if (ret) return ret; ret = venus_halt_axi(hdev); if (ret) return ret; hdev->power_enabled = false; return 0; } static int venus_power_on(struct venus_hfi_device *hdev) { int ret; if (hdev->power_enabled) return 0; ret = venus_set_hw_state_resume(hdev->core); if (ret) goto err; ret = venus_run(hdev); if (ret) goto err_suspend; hdev->power_enabled = true; return 0; err_suspend: venus_set_hw_state_suspend(hdev->core); err: hdev->power_enabled = false; return ret; } static int venus_iface_msgq_read_nolock(struct venus_hfi_device *hdev, void *pkt) { struct iface_queue *queue; u32 tx_req; int ret; if (!venus_is_valid_state(hdev)) return -EINVAL; queue = &hdev->queues[IFACEQ_MSG_IDX]; ret = venus_read_queue(hdev, queue, pkt, &tx_req); if (ret) return ret; if (tx_req) venus_soft_int(hdev); return 0; } static int venus_iface_msgq_read(struct venus_hfi_device *hdev, void *pkt) { int ret; mutex_lock(&hdev->lock); ret = venus_iface_msgq_read_nolock(hdev, pkt); mutex_unlock(&hdev->lock); return ret; } static int venus_iface_dbgq_read_nolock(struct venus_hfi_device *hdev, void *pkt) { struct iface_queue *queue; u32 tx_req; int ret; ret = venus_is_valid_state(hdev); if (!ret) return -EINVAL; queue = &hdev->queues[IFACEQ_DBG_IDX]; ret = venus_read_queue(hdev, queue, pkt, &tx_req); if (ret) return ret; if (tx_req) venus_soft_int(hdev); return 0; } static int venus_iface_dbgq_read(struct venus_hfi_device *hdev, void *pkt) { int ret; if (!pkt) return -EINVAL; mutex_lock(&hdev->lock); ret = venus_iface_dbgq_read_nolock(hdev, pkt); mutex_unlock(&hdev->lock); return ret; } static void venus_set_qhdr_defaults(struct hfi_queue_header *qhdr) { qhdr->status = 1; qhdr->type = IFACEQ_DFLT_QHDR; qhdr->q_size = IFACEQ_QUEUE_SIZE / 4; qhdr->pkt_size = 0; qhdr->rx_wm = 1; qhdr->tx_wm = 1; qhdr->rx_req = 1; qhdr->tx_req = 0; qhdr->rx_irq_status = 0; qhdr->tx_irq_status = 0; qhdr->read_idx = 0; qhdr->write_idx = 0; } static void venus_interface_queues_release(struct venus_hfi_device *hdev) { mutex_lock(&hdev->lock); venus_free(hdev, &hdev->ifaceq_table); venus_free(hdev, &hdev->sfr); memset(hdev->queues, 0, sizeof(hdev->queues)); memset(&hdev->ifaceq_table, 0, sizeof(hdev->ifaceq_table)); memset(&hdev->sfr, 0, sizeof(hdev->sfr)); mutex_unlock(&hdev->lock); } static int venus_interface_queues_init(struct venus_hfi_device *hdev) { struct hfi_queue_table_header *tbl_hdr; struct iface_queue *queue; struct hfi_sfr *sfr; struct mem_desc desc = {0}; unsigned int offset; unsigned int i; int ret; ret = venus_alloc(hdev, &desc, ALIGNED_QUEUE_SIZE); if (ret) return ret; hdev->ifaceq_table = desc; offset = IFACEQ_TABLE_SIZE; for (i = 0; i < IFACEQ_NUM; i++) { queue = &hdev->queues[i]; queue->qmem.da = desc.da + offset; queue->qmem.kva = desc.kva + offset; queue->qmem.size = IFACEQ_QUEUE_SIZE; offset += queue->qmem.size; queue->qhdr = IFACEQ_GET_QHDR_START_ADDR(hdev->ifaceq_table.kva, i); venus_set_qhdr_defaults(queue->qhdr); queue->qhdr->start_addr = queue->qmem.da; if (i == IFACEQ_CMD_IDX) queue->qhdr->type |= HFI_HOST_TO_CTRL_CMD_Q; else if (i == IFACEQ_MSG_IDX) queue->qhdr->type |= HFI_CTRL_TO_HOST_MSG_Q; else if (i == IFACEQ_DBG_IDX) queue->qhdr->type |= HFI_CTRL_TO_HOST_DBG_Q; } tbl_hdr = hdev->ifaceq_table.kva; tbl_hdr->version = 0; tbl_hdr->size = IFACEQ_TABLE_SIZE; tbl_hdr->qhdr0_offset = sizeof(struct hfi_queue_table_header); tbl_hdr->qhdr_size = sizeof(struct hfi_queue_header); tbl_hdr->num_q = IFACEQ_NUM; tbl_hdr->num_active_q = IFACEQ_NUM; /* * Set receive request to zero on debug queue as there is no * need of interrupt from video hardware for debug messages */ queue = &hdev->queues[IFACEQ_DBG_IDX]; queue->qhdr->rx_req = 0; ret = venus_alloc(hdev, &desc, ALIGNED_SFR_SIZE); if (ret) { hdev->sfr.da = 0; } else { hdev->sfr = desc; sfr = hdev->sfr.kva; sfr->buf_size = ALIGNED_SFR_SIZE; } /* ensure table and queue header structs are settled in memory */ wmb(); return 0; } static int venus_sys_set_debug(struct venus_hfi_device *hdev, u32 debug) { struct hfi_sys_set_property_pkt *pkt; u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; int ret; pkt = (struct hfi_sys_set_property_pkt *)packet; pkt_sys_debug_config(pkt, HFI_DEBUG_MODE_QUEUE, debug); ret = venus_iface_cmdq_write(hdev, pkt); if (ret) return ret; return 0; } static int venus_sys_set_coverage(struct venus_hfi_device *hdev, u32 mode) { struct hfi_sys_set_property_pkt *pkt; u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; int ret; pkt = (struct hfi_sys_set_property_pkt *)packet; pkt_sys_coverage_config(pkt, mode); ret = venus_iface_cmdq_write(hdev, pkt); if (ret) return ret; return 0; } static int venus_sys_set_idle_message(struct venus_hfi_device *hdev, bool enable) { struct hfi_sys_set_property_pkt *pkt; u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; int ret; if (!enable) return 0; pkt = (struct hfi_sys_set_property_pkt *)packet; pkt_sys_idle_indicator(pkt, enable); ret = venus_iface_cmdq_write(hdev, pkt); if (ret) return ret; return 0; } static int venus_sys_set_power_control(struct venus_hfi_device *hdev, bool enable) { struct hfi_sys_set_property_pkt *pkt; u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; int ret; pkt = (struct hfi_sys_set_property_pkt *)packet; pkt_sys_power_control(pkt, enable); ret = venus_iface_cmdq_write(hdev, pkt); if (ret) return ret; return 0; } static int venus_get_queue_size(struct venus_hfi_device *hdev, unsigned int index) { struct hfi_queue_header *qhdr; if (index >= IFACEQ_NUM) return -EINVAL; qhdr = hdev->queues[index].qhdr; if (!qhdr) return -EINVAL; return abs(qhdr->read_idx - qhdr->write_idx); } static int venus_sys_set_default_properties(struct venus_hfi_device *hdev) { struct device *dev = hdev->core->dev; int ret; ret = venus_sys_set_debug(hdev, venus_fw_debug); if (ret) dev_warn(dev, "setting fw debug msg ON failed (%d)\n", ret); /* * Idle indicator is disabled by default on some 4xx firmware versions, * enable it explicitly in order to make suspend functional by checking * WFI (wait-for-interrupt) bit. */ if (IS_V4(hdev->core)) venus_sys_idle_indicator = true; ret = venus_sys_set_idle_message(hdev, venus_sys_idle_indicator); if (ret) dev_warn(dev, "setting idle response ON failed (%d)\n", ret); ret = venus_sys_set_power_control(hdev, venus_fw_low_power_mode); if (ret) dev_warn(dev, "setting hw power collapse ON failed (%d)\n", ret); return ret; } static int venus_session_cmd(struct venus_inst *inst, u32 pkt_type) { struct venus_hfi_device *hdev = to_hfi_priv(inst->core); struct hfi_session_pkt pkt; pkt_session_cmd(&pkt, pkt_type, inst); return venus_iface_cmdq_write(hdev, &pkt); } static void venus_flush_debug_queue(struct venus_hfi_device *hdev) { struct device *dev = hdev->core->dev; void *packet = hdev->dbg_buf; while (!venus_iface_dbgq_read(hdev, packet)) { struct hfi_msg_sys_coverage_pkt *pkt = packet; if (pkt->hdr.pkt_type != HFI_MSG_SYS_COV) { struct hfi_msg_sys_debug_pkt *pkt = packet; dev_dbg(dev, "%s", pkt->msg_data); } } } static int venus_prepare_power_collapse(struct venus_hfi_device *hdev, bool wait) { unsigned long timeout = msecs_to_jiffies(venus_hw_rsp_timeout); struct hfi_sys_pc_prep_pkt pkt; int ret; init_completion(&hdev->pwr_collapse_prep); pkt_sys_pc_prep(&pkt); ret = venus_iface_cmdq_write(hdev, &pkt); if (ret) return ret; if (!wait) return 0; ret = wait_for_completion_timeout(&hdev->pwr_collapse_prep, timeout); if (!ret) { venus_flush_debug_queue(hdev); return -ETIMEDOUT; } return 0; } static int venus_are_queues_empty(struct venus_hfi_device *hdev) { int ret1, ret2; ret1 = venus_get_queue_size(hdev, IFACEQ_MSG_IDX); if (ret1 < 0) return ret1; ret2 = venus_get_queue_size(hdev, IFACEQ_CMD_IDX); if (ret2 < 0) return ret2; if (!ret1 && !ret2) return 1; return 0; } static void venus_sfr_print(struct venus_hfi_device *hdev) { struct device *dev = hdev->core->dev; struct hfi_sfr *sfr = hdev->sfr.kva; void *p; if (!sfr) return; p = memchr(sfr->data, '\0', sfr->buf_size); /* * SFR isn't guaranteed to be NULL terminated since SYS_ERROR indicates * that Venus is in the process of crashing. */ if (!p) sfr->data[sfr->buf_size - 1] = '\0'; dev_err_ratelimited(dev, "SFR message from FW: %s\n", sfr->data); } static void venus_process_msg_sys_error(struct venus_hfi_device *hdev, void *packet) { struct hfi_msg_event_notify_pkt *event_pkt = packet; if (event_pkt->event_id != HFI_EVENT_SYS_ERROR) return; venus_set_state(hdev, VENUS_STATE_DEINIT); /* * Once SYS_ERROR received from HW, it is safe to halt the AXI. * With SYS_ERROR, Venus FW may have crashed and HW might be * active and causing unnecessary transactions. Hence it is * safe to stop all AXI transactions from venus subsystem. */ venus_halt_axi(hdev); venus_sfr_print(hdev); } static irqreturn_t venus_isr_thread(struct venus_core *core) { struct venus_hfi_device *hdev = to_hfi_priv(core); const struct venus_resources *res; void *pkt; u32 msg_ret; if (!hdev) return IRQ_NONE; res = hdev->core->res; pkt = hdev->pkt_buf; if (hdev->irq_status & WRAPPER_INTR_STATUS_A2HWD_MASK) { venus_sfr_print(hdev); hfi_process_watchdog_timeout(core); } while (!venus_iface_msgq_read(hdev, pkt)) { msg_ret = hfi_process_msg_packet(core, pkt); switch (msg_ret) { case HFI_MSG_EVENT_NOTIFY: venus_process_msg_sys_error(hdev, pkt); break; case HFI_MSG_SYS_INIT: venus_hfi_core_set_resource(core, res->vmem_id, res->vmem_size, res->vmem_addr, hdev); break; case HFI_MSG_SYS_RELEASE_RESOURCE: complete(&hdev->release_resource); break; case HFI_MSG_SYS_PC_PREP: complete(&hdev->pwr_collapse_prep); break; default: break; } } venus_flush_debug_queue(hdev); return IRQ_HANDLED; } static irqreturn_t venus_isr(struct venus_core *core) { struct venus_hfi_device *hdev = to_hfi_priv(core); u32 status; if (!hdev) return IRQ_NONE; status = venus_readl(hdev, WRAPPER_INTR_STATUS); if (status & WRAPPER_INTR_STATUS_A2H_MASK || status & WRAPPER_INTR_STATUS_A2HWD_MASK || status & CPU_CS_SCIACMDARG0_INIT_IDLE_MSG_MASK) hdev->irq_status = status; venus_writel(hdev, CPU_CS_A2HSOFTINTCLR, 1); venus_writel(hdev, WRAPPER_INTR_CLEAR, status); return IRQ_WAKE_THREAD; } static int venus_core_init(struct venus_core *core) { struct venus_hfi_device *hdev = to_hfi_priv(core); struct device *dev = core->dev; struct hfi_sys_get_property_pkt version_pkt; struct hfi_sys_init_pkt pkt; int ret; pkt_sys_init(&pkt, HFI_VIDEO_ARCH_OX); venus_set_state(hdev, VENUS_STATE_INIT); ret = venus_iface_cmdq_write(hdev, &pkt); if (ret) return ret; pkt_sys_image_version(&version_pkt); ret = venus_iface_cmdq_write(hdev, &version_pkt); if (ret) dev_warn(dev, "failed to send image version pkt to fw\n"); ret = venus_sys_set_default_properties(hdev); if (ret) return ret; return 0; } static int venus_core_deinit(struct venus_core *core) { struct venus_hfi_device *hdev = to_hfi_priv(core); venus_set_state(hdev, VENUS_STATE_DEINIT); hdev->suspended = true; hdev->power_enabled = false; return 0; } static int venus_core_ping(struct venus_core *core, u32 cookie) { struct venus_hfi_device *hdev = to_hfi_priv(core); struct hfi_sys_ping_pkt pkt; pkt_sys_ping(&pkt, cookie); return venus_iface_cmdq_write(hdev, &pkt); } static int venus_core_trigger_ssr(struct venus_core *core, u32 trigger_type) { struct venus_hfi_device *hdev = to_hfi_priv(core); struct hfi_sys_test_ssr_pkt pkt; int ret; ret = pkt_sys_ssr_cmd(&pkt, trigger_type); if (ret) return ret; return venus_iface_cmdq_write(hdev, &pkt); } static int venus_session_init(struct venus_inst *inst, u32 session_type, u32 codec) { struct venus_hfi_device *hdev = to_hfi_priv(inst->core); struct hfi_session_init_pkt pkt; int ret; ret = pkt_session_init(&pkt, inst, session_type, codec); if (ret) goto err; ret = venus_iface_cmdq_write(hdev, &pkt); if (ret) goto err; return 0; err: venus_flush_debug_queue(hdev); return ret; } static int venus_session_end(struct venus_inst *inst) { struct venus_hfi_device *hdev = to_hfi_priv(inst->core); struct device *dev = hdev->core->dev; if (venus_fw_coverage) { if (venus_sys_set_coverage(hdev, venus_fw_coverage)) dev_warn(dev, "fw coverage msg ON failed\n"); } return venus_session_cmd(inst, HFI_CMD_SYS_SESSION_END); } static int venus_session_abort(struct venus_inst *inst) { struct venus_hfi_device *hdev = to_hfi_priv(inst->core); venus_flush_debug_queue(hdev); return venus_session_cmd(inst, HFI_CMD_SYS_SESSION_ABORT); } static int venus_session_flush(struct venus_inst *inst, u32 flush_mode) { struct venus_hfi_device *hdev = to_hfi_priv(inst->core); struct hfi_session_flush_pkt pkt; int ret; ret = pkt_session_flush(&pkt, inst, flush_mode); if (ret) return ret; return venus_iface_cmdq_write(hdev, &pkt); } static int venus_session_start(struct venus_inst *inst) { return venus_session_cmd(inst, HFI_CMD_SESSION_START); } static int venus_session_stop(struct venus_inst *inst) { return venus_session_cmd(inst, HFI_CMD_SESSION_STOP); } static int venus_session_continue(struct venus_inst *inst) { return venus_session_cmd(inst, HFI_CMD_SESSION_CONTINUE); } static int venus_session_etb(struct venus_inst *inst, struct hfi_frame_data *in_frame) { struct venus_hfi_device *hdev = to_hfi_priv(inst->core); u32 session_type = inst->session_type; int ret; if (session_type == VIDC_SESSION_TYPE_DEC) { struct hfi_session_empty_buffer_compressed_pkt pkt; ret = pkt_session_etb_decoder(&pkt, inst, in_frame); if (ret) return ret; ret = venus_iface_cmdq_write(hdev, &pkt); } else if (session_type == VIDC_SESSION_TYPE_ENC) { struct hfi_session_empty_buffer_uncompressed_plane0_pkt pkt; ret = pkt_session_etb_encoder(&pkt, inst, in_frame); if (ret) return ret; ret = venus_iface_cmdq_write(hdev, &pkt); } else { ret = -EINVAL; } return ret; } static int venus_session_ftb(struct venus_inst *inst, struct hfi_frame_data *out_frame) { struct venus_hfi_device *hdev = to_hfi_priv(inst->core); struct hfi_session_fill_buffer_pkt pkt; int ret; ret = pkt_session_ftb(&pkt, inst, out_frame); if (ret) return ret; return venus_iface_cmdq_write(hdev, &pkt); } static int venus_session_set_buffers(struct venus_inst *inst, struct hfi_buffer_desc *bd) { struct venus_hfi_device *hdev = to_hfi_priv(inst->core); struct hfi_session_set_buffers_pkt *pkt; u8 packet[IFACEQ_VAR_LARGE_PKT_SIZE]; int ret; if (bd->buffer_type == HFI_BUFFER_INPUT) return 0; pkt = (struct hfi_session_set_buffers_pkt *)packet; ret = pkt_session_set_buffers(pkt, inst, bd); if (ret) return ret; return venus_iface_cmdq_write(hdev, pkt); } static int venus_session_unset_buffers(struct venus_inst *inst, struct hfi_buffer_desc *bd) { struct venus_hfi_device *hdev = to_hfi_priv(inst->core); struct hfi_session_release_buffer_pkt *pkt; u8 packet[IFACEQ_VAR_LARGE_PKT_SIZE]; int ret; if (bd->buffer_type == HFI_BUFFER_INPUT) return 0; pkt = (struct hfi_session_release_buffer_pkt *)packet; ret = pkt_session_unset_buffers(pkt, inst, bd); if (ret) return ret; return venus_iface_cmdq_write(hdev, pkt); } static int venus_session_load_res(struct venus_inst *inst) { return venus_session_cmd(inst, HFI_CMD_SESSION_LOAD_RESOURCES); } static int venus_session_release_res(struct venus_inst *inst) { return venus_session_cmd(inst, HFI_CMD_SESSION_RELEASE_RESOURCES); } static int venus_session_parse_seq_hdr(struct venus_inst *inst, u32 seq_hdr, u32 seq_hdr_len) { struct venus_hfi_device *hdev = to_hfi_priv(inst->core); struct hfi_session_parse_sequence_header_pkt *pkt; u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; int ret; pkt = (struct hfi_session_parse_sequence_header_pkt *)packet; ret = pkt_session_parse_seq_header(pkt, inst, seq_hdr, seq_hdr_len); if (ret) return ret; ret = venus_iface_cmdq_write(hdev, pkt); if (ret) return ret; return 0; } static int venus_session_get_seq_hdr(struct venus_inst *inst, u32 seq_hdr, u32 seq_hdr_len) { struct venus_hfi_device *hdev = to_hfi_priv(inst->core); struct hfi_session_get_sequence_header_pkt *pkt; u8 packet[IFACEQ_VAR_SMALL_PKT_SIZE]; int ret; pkt = (struct hfi_session_get_sequence_header_pkt *)packet; ret = pkt_session_get_seq_hdr(pkt, inst, seq_hdr, seq_hdr_len); if (ret) return ret; return venus_iface_cmdq_write(hdev, pkt); } static int venus_session_set_property(struct venus_inst *inst, u32 ptype, void *pdata) { struct venus_hfi_device *hdev = to_hfi_priv(inst->core); struct hfi_session_set_property_pkt *pkt; u8 packet[IFACEQ_VAR_LARGE_PKT_SIZE]; int ret; pkt = (struct hfi_session_set_property_pkt *)packet; ret = pkt_session_set_property(pkt, inst, ptype, pdata); if (ret == -ENOTSUPP) return 0; if (ret) return ret; return venus_iface_cmdq_write(hdev, pkt); } static int venus_session_get_property(struct venus_inst *inst, u32 ptype) { struct venus_hfi_device *hdev = to_hfi_priv(inst->core); struct hfi_session_get_property_pkt pkt; int ret; ret = pkt_session_get_property(&pkt, inst, ptype); if (ret) return ret; return venus_iface_cmdq_write(hdev, &pkt); } static int venus_resume(struct venus_core *core) { struct venus_hfi_device *hdev = to_hfi_priv(core); int ret = 0; mutex_lock(&hdev->lock); if (!hdev->suspended) goto unlock; ret = venus_power_on(hdev); unlock: if (!ret) hdev->suspended = false; mutex_unlock(&hdev->lock); return ret; } static int venus_suspend_1xx(struct venus_core *core) { struct venus_hfi_device *hdev = to_hfi_priv(core); struct device *dev = core->dev; u32 ctrl_status; int ret; if (!hdev->power_enabled || hdev->suspended) return 0; mutex_lock(&hdev->lock); ret = venus_is_valid_state(hdev); mutex_unlock(&hdev->lock); if (!ret) { dev_err(dev, "bad state, cannot suspend\n"); return -EINVAL; } ret = venus_prepare_power_collapse(hdev, true); if (ret) { dev_err(dev, "prepare for power collapse fail (%d)\n", ret); return ret; } mutex_lock(&hdev->lock); if (hdev->last_packet_type != HFI_CMD_SYS_PC_PREP) { mutex_unlock(&hdev->lock); return -EINVAL; } ret = venus_are_queues_empty(hdev); if (ret < 0 || !ret) { mutex_unlock(&hdev->lock); return -EINVAL; } ctrl_status = venus_readl(hdev, CPU_CS_SCIACMDARG0); if (!(ctrl_status & CPU_CS_SCIACMDARG0_PC_READY)) { mutex_unlock(&hdev->lock); return -EINVAL; } ret = venus_power_off(hdev); if (ret) { mutex_unlock(&hdev->lock); return ret; } hdev->suspended = true; mutex_unlock(&hdev->lock); return 0; } static bool venus_cpu_and_video_core_idle(struct venus_hfi_device *hdev) { u32 ctrl_status, cpu_status; cpu_status = venus_readl(hdev, WRAPPER_CPU_STATUS); ctrl_status = venus_readl(hdev, CPU_CS_SCIACMDARG0); if (cpu_status & WRAPPER_CPU_STATUS_WFI && ctrl_status & CPU_CS_SCIACMDARG0_INIT_IDLE_MSG_MASK) return true; return false; } static bool venus_cpu_idle_and_pc_ready(struct venus_hfi_device *hdev) { u32 ctrl_status, cpu_status; cpu_status = venus_readl(hdev, WRAPPER_CPU_STATUS); ctrl_status = venus_readl(hdev, CPU_CS_SCIACMDARG0); if (cpu_status & WRAPPER_CPU_STATUS_WFI && ctrl_status & CPU_CS_SCIACMDARG0_PC_READY) return true; return false; } static int venus_suspend_3xx(struct venus_core *core) { struct venus_hfi_device *hdev = to_hfi_priv(core); struct device *dev = core->dev; bool val; int ret; if (!hdev->power_enabled || hdev->suspended) return 0; mutex_lock(&hdev->lock); ret = venus_is_valid_state(hdev); mutex_unlock(&hdev->lock); if (!ret) { dev_err(dev, "bad state, cannot suspend\n"); return -EINVAL; } /* * Power collapse sequence for Venus 3xx and 4xx versions: * 1. Check for ARM9 and video core to be idle by checking WFI bit * (bit 0) in CPU status register and by checking Idle (bit 30) in * Control status register for video core. * 2. Send a command to prepare for power collapse. * 3. Check for WFI and PC_READY bits. */ ret = readx_poll_timeout(venus_cpu_and_video_core_idle, hdev, val, val, 1500, 100 * 1500); if (ret) return ret; ret = venus_prepare_power_collapse(hdev, false); if (ret) { dev_err(dev, "prepare for power collapse fail (%d)\n", ret); return ret; } ret = readx_poll_timeout(venus_cpu_idle_and_pc_ready, hdev, val, val, 1500, 100 * 1500); if (ret) return ret; mutex_lock(&hdev->lock); ret = venus_power_off(hdev); if (ret) { dev_err(dev, "venus_power_off (%d)\n", ret); mutex_unlock(&hdev->lock); return ret; } hdev->suspended = true; mutex_unlock(&hdev->lock); return 0; } static int venus_suspend(struct venus_core *core) { if (IS_V3(core) || IS_V4(core)) return venus_suspend_3xx(core); return venus_suspend_1xx(core); } static const struct hfi_ops venus_hfi_ops = { .core_init = venus_core_init, .core_deinit = venus_core_deinit, .core_ping = venus_core_ping, .core_trigger_ssr = venus_core_trigger_ssr, .session_init = venus_session_init, .session_end = venus_session_end, .session_abort = venus_session_abort, .session_flush = venus_session_flush, .session_start = venus_session_start, .session_stop = venus_session_stop, .session_continue = venus_session_continue, .session_etb = venus_session_etb, .session_ftb = venus_session_ftb, .session_set_buffers = venus_session_set_buffers, .session_unset_buffers = venus_session_unset_buffers, .session_load_res = venus_session_load_res, .session_release_res = venus_session_release_res, .session_parse_seq_hdr = venus_session_parse_seq_hdr, .session_get_seq_hdr = venus_session_get_seq_hdr, .session_set_property = venus_session_set_property, .session_get_property = venus_session_get_property, .resume = venus_resume, .suspend = venus_suspend, .isr = venus_isr, .isr_thread = venus_isr_thread, }; void venus_hfi_destroy(struct venus_core *core) { struct venus_hfi_device *hdev = to_hfi_priv(core); venus_interface_queues_release(hdev); mutex_destroy(&hdev->lock); kfree(hdev); core->priv = NULL; core->ops = NULL; } int venus_hfi_create(struct venus_core *core) { struct venus_hfi_device *hdev; int ret; hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); if (!hdev) return -ENOMEM; mutex_init(&hdev->lock); hdev->core = core; hdev->suspended = true; core->priv = hdev; core->ops = &venus_hfi_ops; core->core_caps = ENC_ROTATION_CAPABILITY | ENC_SCALING_CAPABILITY | ENC_DEINTERLACE_CAPABILITY | DEC_MULTI_STREAM_CAPABILITY; ret = venus_interface_queues_init(hdev); if (ret) goto err_kfree; return 0; err_kfree: kfree(hdev); core->priv = NULL; core->ops = NULL; return ret; }
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