| /* |
| * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include <assert.h> |
| #include <common/debug.h> |
| #include <common/runtime_svc.h> |
| #include <lib/mmio.h> |
| #include <socfpga_mailbox.h> |
| #include <tools_share/uuid.h> |
| |
| /* Number of SiP Calls implemented */ |
| #define SIP_NUM_CALLS 0x3 |
| |
| /* Total buffer the driver can hold */ |
| #define FPGA_CONFIG_BUFFER_SIZE 4 |
| |
| int current_block; |
| int current_buffer; |
| int current_id = 1; |
| int max_blocks; |
| uint32_t bytes_per_block; |
| uint32_t blocks_submitted; |
| uint32_t blocks_completed; |
| |
| struct fpga_config_info { |
| uint32_t addr; |
| int size; |
| int size_written; |
| uint32_t write_requested; |
| int subblocks_sent; |
| int block_number; |
| }; |
| |
| /* SiP Service UUID */ |
| DEFINE_SVC_UUID2(intl_svc_uid, |
| 0xa85273b0, 0xe85a, 0x4862, 0xa6, 0x2a, |
| 0xfa, 0x88, 0x88, 0x17, 0x68, 0x81); |
| |
| uint64_t plat_sip_handler(uint32_t smc_fid, |
| uint64_t x1, |
| uint64_t x2, |
| uint64_t x3, |
| uint64_t x4, |
| void *cookie, |
| void *handle, |
| uint64_t flags) |
| { |
| ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid); |
| SMC_RET1(handle, SMC_UNK); |
| } |
| |
| struct fpga_config_info fpga_config_buffers[FPGA_CONFIG_BUFFER_SIZE]; |
| |
| static void intel_fpga_sdm_write_buffer(struct fpga_config_info *buffer) |
| { |
| uint32_t args[3]; |
| |
| while (max_blocks > 0 && buffer->size > buffer->size_written) { |
| if (buffer->size - buffer->size_written <= |
| bytes_per_block) { |
| args[0] = (1<<8); |
| args[1] = buffer->addr + buffer->size_written; |
| args[2] = buffer->size - buffer->size_written; |
| buffer->size_written += |
| buffer->size - buffer->size_written; |
| buffer->subblocks_sent++; |
| mailbox_send_cmd_async(0x4, |
| MBOX_RECONFIG_DATA, |
| args, 3, 0); |
| current_buffer++; |
| current_buffer %= FPGA_CONFIG_BUFFER_SIZE; |
| } else { |
| args[0] = (1<<8); |
| args[1] = buffer->addr + buffer->size_written; |
| args[2] = bytes_per_block; |
| buffer->size_written += bytes_per_block; |
| mailbox_send_cmd_async(0x4, |
| MBOX_RECONFIG_DATA, |
| args, 3, 0); |
| buffer->subblocks_sent++; |
| } |
| max_blocks--; |
| } |
| } |
| |
| static int intel_fpga_sdm_write_all(void) |
| { |
| int i; |
| |
| for (i = 0; i < FPGA_CONFIG_BUFFER_SIZE; i++) |
| intel_fpga_sdm_write_buffer( |
| &fpga_config_buffers[current_buffer]); |
| |
| return 0; |
| } |
| |
| uint32_t intel_mailbox_fpga_config_isdone(void) |
| { |
| uint32_t args[2]; |
| uint32_t response[6]; |
| int status; |
| |
| status = mailbox_send_cmd(1, MBOX_RECONFIG_STATUS, args, 0, 0, |
| response); |
| |
| if (status < 0) |
| return INTEL_SIP_SMC_STATUS_ERROR; |
| |
| if (response[RECONFIG_STATUS_STATE] && |
| response[RECONFIG_STATUS_STATE] != MBOX_CFGSTAT_STATE_CONFIG) |
| return INTEL_SIP_SMC_STATUS_ERROR; |
| |
| if (!(response[RECONFIG_STATUS_PIN_STATUS] & PIN_STATUS_NSTATUS)) |
| return INTEL_SIP_SMC_STATUS_ERROR; |
| |
| if (response[RECONFIG_STATUS_SOFTFUNC_STATUS] & |
| SOFTFUNC_STATUS_SEU_ERROR) |
| return INTEL_SIP_SMC_STATUS_ERROR; |
| |
| if ((response[RECONFIG_STATUS_SOFTFUNC_STATUS] & |
| SOFTFUNC_STATUS_CONF_DONE) && |
| (response[RECONFIG_STATUS_SOFTFUNC_STATUS] & |
| SOFTFUNC_STATUS_INIT_DONE)) |
| return INTEL_SIP_SMC_STATUS_OK; |
| |
| return INTEL_SIP_SMC_STATUS_ERROR; |
| } |
| |
| static int mark_last_buffer_xfer_completed(uint32_t *buffer_addr_completed) |
| { |
| int i; |
| |
| for (i = 0; i < FPGA_CONFIG_BUFFER_SIZE; i++) { |
| if (fpga_config_buffers[i].block_number == current_block) { |
| fpga_config_buffers[i].subblocks_sent--; |
| if (fpga_config_buffers[i].subblocks_sent == 0 |
| && fpga_config_buffers[i].size <= |
| fpga_config_buffers[i].size_written) { |
| fpga_config_buffers[i].write_requested = 0; |
| current_block++; |
| *buffer_addr_completed = |
| fpga_config_buffers[i].addr; |
| return 0; |
| } |
| } |
| } |
| |
| return -1; |
| } |
| |
| unsigned int address_in_ddr(uint32_t *addr) |
| { |
| if (((unsigned long long)addr > DRAM_BASE) && |
| ((unsigned long long)addr < DRAM_BASE + DRAM_SIZE)) |
| return 0; |
| |
| return -1; |
| } |
| |
| int intel_fpga_config_completed_write(uint32_t *completed_addr, |
| uint32_t *count) |
| { |
| uint32_t status = INTEL_SIP_SMC_STATUS_OK; |
| *count = 0; |
| int resp_len = 0; |
| uint32_t resp[5]; |
| int all_completed = 1; |
| int count_check = 0; |
| |
| if (address_in_ddr(completed_addr) != 0 || address_in_ddr(count) != 0) |
| return INTEL_SIP_SMC_STATUS_ERROR; |
| |
| for (count_check = 0; count_check < 3; count_check++) |
| if (address_in_ddr(&completed_addr[*count + count_check]) != 0) |
| return INTEL_SIP_SMC_STATUS_ERROR; |
| |
| resp_len = mailbox_read_response(0x4, resp); |
| |
| while (resp_len >= 0 && *count < 3) { |
| max_blocks++; |
| if (mark_last_buffer_xfer_completed( |
| &completed_addr[*count]) == 0) |
| *count = *count + 1; |
| else |
| break; |
| resp_len = mailbox_read_response(0x4, resp); |
| } |
| |
| if (*count <= 0) { |
| if (resp_len != MBOX_NO_RESPONSE && |
| resp_len != MBOX_TIMEOUT && resp_len != 0) { |
| return INTEL_SIP_SMC_STATUS_ERROR; |
| } |
| |
| *count = 0; |
| } |
| |
| intel_fpga_sdm_write_all(); |
| |
| if (*count > 0) |
| status = INTEL_SIP_SMC_STATUS_OK; |
| else if (*count == 0) |
| status = INTEL_SIP_SMC_STATUS_BUSY; |
| |
| for (int i = 0; i < FPGA_CONFIG_BUFFER_SIZE; i++) { |
| if (fpga_config_buffers[i].write_requested != 0) { |
| all_completed = 0; |
| break; |
| } |
| } |
| |
| if (all_completed == 1) |
| return INTEL_SIP_SMC_STATUS_OK; |
| |
| return status; |
| } |
| |
| int intel_fpga_config_start(uint32_t config_type) |
| { |
| uint32_t response[3]; |
| int status = 0; |
| |
| status = mailbox_send_cmd(2, MBOX_RECONFIG, 0, 0, 0, |
| response); |
| |
| if (status < 0) |
| return status; |
| |
| max_blocks = response[0]; |
| bytes_per_block = response[1]; |
| |
| for (int i = 0; i < FPGA_CONFIG_BUFFER_SIZE; i++) { |
| fpga_config_buffers[i].size = 0; |
| fpga_config_buffers[i].size_written = 0; |
| fpga_config_buffers[i].addr = 0; |
| fpga_config_buffers[i].write_requested = 0; |
| fpga_config_buffers[i].block_number = 0; |
| fpga_config_buffers[i].subblocks_sent = 0; |
| } |
| |
| blocks_submitted = 0; |
| current_block = 0; |
| current_buffer = 0; |
| |
| return 0; |
| } |
| |
| |
| uint32_t intel_fpga_config_write(uint64_t mem, uint64_t size) |
| { |
| int i = 0; |
| uint32_t status = INTEL_SIP_SMC_STATUS_OK; |
| |
| if (mem < DRAM_BASE || mem > DRAM_BASE + DRAM_SIZE) |
| status = INTEL_SIP_SMC_STATUS_REJECTED; |
| |
| if (mem + size > DRAM_BASE + DRAM_SIZE) |
| status = INTEL_SIP_SMC_STATUS_REJECTED; |
| |
| for (i = 0; i < FPGA_CONFIG_BUFFER_SIZE; i++) { |
| if (!fpga_config_buffers[i].write_requested) { |
| fpga_config_buffers[i].addr = mem; |
| fpga_config_buffers[i].size = size; |
| fpga_config_buffers[i].size_written = 0; |
| fpga_config_buffers[i].write_requested = 1; |
| fpga_config_buffers[i].block_number = |
| blocks_submitted++; |
| fpga_config_buffers[i].subblocks_sent = 0; |
| break; |
| } |
| } |
| |
| |
| if (i == FPGA_CONFIG_BUFFER_SIZE) { |
| status = INTEL_SIP_SMC_STATUS_REJECTED; |
| return status; |
| } else if (i == FPGA_CONFIG_BUFFER_SIZE - 1) { |
| status = INTEL_SIP_SMC_STATUS_BUSY; |
| } |
| |
| intel_fpga_sdm_write_all(); |
| |
| return status; |
| } |
| |
| /* |
| * This function is responsible for handling all SiP calls from the NS world |
| */ |
| |
| uintptr_t sip_smc_handler(uint32_t smc_fid, |
| u_register_t x1, |
| u_register_t x2, |
| u_register_t x3, |
| u_register_t x4, |
| void *cookie, |
| void *handle, |
| u_register_t flags) |
| { |
| uint32_t status = INTEL_SIP_SMC_STATUS_OK; |
| uint32_t completed_addr[3]; |
| uint32_t count = 0; |
| |
| switch (smc_fid) { |
| case SIP_SVC_UID: |
| /* Return UID to the caller */ |
| SMC_UUID_RET(handle, intl_svc_uid); |
| break; |
| case INTEL_SIP_SMC_FPGA_CONFIG_ISDONE: |
| status = intel_mailbox_fpga_config_isdone(); |
| SMC_RET4(handle, status, 0, 0, 0); |
| break; |
| case INTEL_SIP_SMC_FPGA_CONFIG_GET_MEM: |
| SMC_RET3(handle, INTEL_SIP_SMC_STATUS_OK, |
| INTEL_SIP_SMC_FPGA_CONFIG_ADDR, |
| INTEL_SIP_SMC_FPGA_CONFIG_SIZE - |
| INTEL_SIP_SMC_FPGA_CONFIG_ADDR); |
| break; |
| case INTEL_SIP_SMC_FPGA_CONFIG_START: |
| status = intel_fpga_config_start(x1); |
| SMC_RET4(handle, status, 0, 0, 0); |
| break; |
| case INTEL_SIP_SMC_FPGA_CONFIG_WRITE: |
| status = intel_fpga_config_write(x1, x2); |
| SMC_RET4(handle, status, 0, 0, 0); |
| break; |
| case INTEL_SIP_SMC_FPGA_CONFIG_COMPLETED_WRITE: |
| status = intel_fpga_config_completed_write(completed_addr, |
| &count); |
| switch (count) { |
| case 1: |
| SMC_RET4(handle, INTEL_SIP_SMC_STATUS_OK, |
| completed_addr[0], 0, 0); |
| break; |
| case 2: |
| SMC_RET4(handle, INTEL_SIP_SMC_STATUS_OK, |
| completed_addr[0], |
| completed_addr[1], 0); |
| break; |
| case 3: |
| SMC_RET4(handle, INTEL_SIP_SMC_STATUS_OK, |
| completed_addr[0], |
| completed_addr[1], |
| completed_addr[2]); |
| break; |
| case 0: |
| SMC_RET4(handle, status, 0, 0, 0); |
| break; |
| default: |
| SMC_RET1(handle, INTEL_SIP_SMC_STATUS_ERROR); |
| } |
| break; |
| |
| default: |
| return plat_sip_handler(smc_fid, x1, x2, x3, x4, |
| cookie, handle, flags); |
| } |
| } |
| |
| DECLARE_RT_SVC( |
| s10_sip_svc, |
| OEN_SIP_START, |
| OEN_SIP_END, |
| SMC_TYPE_FAST, |
| NULL, |
| sip_smc_handler |
| ); |
| |
| DECLARE_RT_SVC( |
| s10_sip_svc_std, |
| OEN_SIP_START, |
| OEN_SIP_END, |
| SMC_TYPE_YIELD, |
| NULL, |
| sip_smc_handler |
| ); |