| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| |
| #include <console/console.h> |
| #include <device/pci.h> |
| #include <intelblocks/pmc_ipc.h> |
| #include <soc/early_tcss.h> |
| #include <soc/pci_devs.h> |
| #include <stdlib.h> |
| #include <inttypes.h> |
| |
| |
| static uint32_t tcss_make_conn_cmd(int u, int u3, int u2, int ufp, int hsl, |
| int sbu, int acc) |
| { |
| return TCSS_CD_FIELD(USAGE, u) | |
| TCSS_CD_FIELD(USB3, u3) | |
| TCSS_CD_FIELD(USB2, u2) | |
| TCSS_CD_FIELD(UFP, ufp) | |
| TCSS_CD_FIELD(HSL, hsl) | |
| TCSS_CD_FIELD(SBU, sbu) | |
| TCSS_CD_FIELD(ACC, acc); |
| } |
| |
| static uint32_t tcss_make_alt_mode_cmd_buf_0(int u, int u3, int m) |
| { |
| return TCSS_ALT_FIELD(USAGE, u) | |
| TCSS_ALT_FIELD(USB3, u3) | |
| TCSS_ALT_FIELD(MODE, m); |
| |
| } |
| |
| static uint32_t tcss_make_alt_mode_cmd_buf_1(int p, int c, int ufp, int dp) |
| { |
| return TCSS_ALT_FIELD(POLARITY, p) | |
| TCSS_ALT_FIELD(CABLE, c) | |
| TCSS_ALT_FIELD(UFP, ufp) | |
| TCSS_ALT_FIELD(DP_MODE, dp); |
| } |
| |
| static uint32_t tcss_make_safe_mode_cmd(int u, int u3) |
| { |
| return TCSS_CD_FIELD(USAGE, u) | |
| TCSS_CD_FIELD(USB3, u3); |
| } |
| |
| |
| static uint32_t tcss_make_hpd_mode_cmd(int u, int u3, int hpd_lvl, int hpd_irq) |
| { |
| return TCSS_HPD_FIELD(USAGE, u) | |
| TCSS_HPD_FIELD(USB3, u3) | |
| TCSS_HPD_FIELD(LVL, hpd_lvl) | |
| TCSS_HPD_FIELD(IRQ, hpd_irq); |
| |
| } |
| |
| static int send_pmc_req(int cmd_type, const struct pmc_ipc_buffer *req, |
| struct pmc_ipc_buffer *res, uint32_t size) |
| { |
| |
| uint32_t cmd_reg; |
| uint32_t res_reg; |
| int tries = 2; |
| int r; |
| |
| cmd_reg = pmc_make_ipc_cmd(PMC_IPC_USBC_CMD_ID, PMC_IPC_USBC_SUBCMD_ID, |
| size); |
| |
| printk(BIOS_DEBUG, "Raw Buffer output 0 %08" PRIx32 "\n", req->buf[0]); |
| printk(BIOS_DEBUG, "Raw Buffer output 1 %08" PRIx32 "\n", req->buf[1]); |
| |
| do { |
| r = pmc_send_ipc_cmd(cmd_reg, req, res); |
| if (r < 0) { |
| printk(BIOS_ERR, "pmc_send_ipc_cmd failed\n"); |
| return -1; |
| } |
| |
| res_reg = res->buf[0]; |
| if (cmd_type == CONNECT_REQ) { |
| if (!TCSS_CONN_STATUS_HAS_FAILED(res_reg)) { |
| printk(BIOS_DEBUG, "pmc_send_ipc_cmd succeeded\n"); |
| return 0; |
| } |
| |
| if (TCSS_CONN_STATUS_IS_FATAL(res_reg)) { |
| printk(BIOS_ERR, "pmc_send_ipc_cmd status: fatal\n"); |
| return -1; |
| } |
| } else { |
| if (!TCSS_STATUS_HAS_FAILED(res_reg)) { |
| printk(BIOS_DEBUG, "pmc_send_ipc_cmd succeeded\n"); |
| return 0; |
| } |
| |
| if (TCSS_STATUS_IS_FATAL(res_reg)) { |
| printk(BIOS_ERR, "pmc_send_ipc_cmd status: fatal\n"); |
| return -1; |
| } |
| } |
| } while (--tries >= 0); |
| |
| printk(BIOS_ERR, "pmc_send_ipc_cmd failed after retries\n"); |
| return -1; |
| } |
| |
| static int send_pmc_connect_request(int port, struct tcss_mux mux_data, |
| struct pmc_ipc_buffer *res) |
| { |
| uint32_t cmd; |
| struct pmc_ipc_buffer req = { 0 }; |
| |
| cmd = tcss_make_conn_cmd( |
| PMC_IPC_TCSS_CONN_REQ_RES, |
| mux_data.usb3_port, |
| mux_data.usb2_port, |
| mux_data.ufp, |
| mux_data.polarity, |
| mux_data.polarity, |
| mux_data.acc); |
| |
| req.buf[0] = cmd; |
| |
| printk(BIOS_DEBUG, "port C%d CONN req: usage %d usb3 %d usb2 %d " |
| "ufp %d ori_hsl %d ori_sbu %d dbg_acc %d\n", |
| port, |
| GET_TCSS_CD_FIELD(USAGE, cmd), |
| GET_TCSS_CD_FIELD(USB3, cmd), |
| GET_TCSS_CD_FIELD(USB2, cmd), |
| GET_TCSS_CD_FIELD(UFP, cmd), |
| GET_TCSS_CD_FIELD(HSL, cmd), |
| GET_TCSS_CD_FIELD(SBU, cmd), |
| GET_TCSS_CD_FIELD(ACC, cmd)); |
| |
| return send_pmc_req(CONNECT_REQ, &req, res, PMC_IPC_CONN_REQ_SIZE); |
| } |
| |
| static int send_pmc_safe_mode_request(int port, struct tcss_mux mux_data, |
| struct pmc_ipc_buffer *res) |
| { |
| uint32_t cmd; |
| struct pmc_ipc_buffer req = { 0 }; |
| |
| cmd = tcss_make_safe_mode_cmd(PMC_IPC_TCSS_SAFE_MODE_REQ_RES, mux_data.usb3_port); |
| |
| req.buf[0] = cmd; |
| |
| printk(BIOS_DEBUG, "port C%d SAFE req: usage %d usb3 %d\n", |
| port, |
| GET_TCSS_CD_FIELD(USAGE, cmd), |
| GET_TCSS_CD_FIELD(USB3, cmd)); |
| |
| return send_pmc_req(SAFE_REQ, &req, res, PMC_IPC_SAFE_REQ_SIZE); |
| } |
| |
| static int send_pmc_dp_hpd_request(int port, struct tcss_mux mux_data) |
| { |
| struct pmc_ipc_buffer *res = NULL; |
| struct pmc_ipc_buffer req = { 0 }; |
| uint32_t cmd; |
| |
| cmd = tcss_make_hpd_mode_cmd( |
| PMC_IPC_TCSS_HPD_REQ_RES, |
| mux_data.usb3_port, |
| mux_data.hpd_lvl, |
| mux_data.hpd_irq); |
| |
| req.buf[0] = cmd; |
| |
| return send_pmc_req(HPD_REQ, &req, res, PMC_IPC_HPD_REQ_SIZE); |
| |
| } |
| |
| static int send_pmc_dp_mode_request(int port, struct tcss_mux mux_data, |
| struct pmc_ipc_buffer *res) |
| { |
| uint32_t cmd; |
| uint8_t dp_mode; |
| int ret; |
| |
| struct pmc_ipc_buffer req = { 0 }; |
| |
| cmd = tcss_make_alt_mode_cmd_buf_0( |
| PMC_IPC_TCSS_ALTMODE_REQ_RES, |
| mux_data.usb3_port, |
| PMC_IPC_DP_MODE); |
| |
| req.buf[0] = cmd; |
| |
| printk(BIOS_DEBUG, "port C%d ALT_1 req: usage %d usb3 %d dp_mode %d\n", |
| port, |
| GET_TCSS_ALT_FIELD(USAGE, cmd), |
| GET_TCSS_ALT_FIELD(USB3, cmd), |
| GET_TCSS_ALT_FIELD(MODE, cmd)); |
| |
| switch (mux_data.dp_mode) { |
| case MODE_DP_PIN_A: |
| dp_mode = 1; |
| break; |
| case MODE_DP_PIN_B: |
| dp_mode = 2; |
| break; |
| case MODE_DP_PIN_C: |
| dp_mode = 3; |
| break; |
| case MODE_DP_PIN_D: |
| dp_mode = 4; |
| break; |
| case MODE_DP_PIN_E: |
| dp_mode = 5; |
| break; |
| case MODE_DP_PIN_F: |
| dp_mode = 6; |
| break; |
| default: |
| dp_mode = 0; |
| break; |
| } |
| |
| cmd = tcss_make_alt_mode_cmd_buf_1( |
| mux_data.polarity, |
| mux_data.cable, |
| 0, /* ufp is not supported in DP ALT Mode request */ |
| dp_mode); |
| |
| printk(BIOS_DEBUG, "port C%d ALT_2 req: polarity %d cable %d ufp %d " |
| "dp_mode %d\n", |
| port, |
| GET_TCSS_ALT_FIELD(POLARITY, cmd), |
| GET_TCSS_ALT_FIELD(CABLE, cmd), |
| GET_TCSS_ALT_FIELD(UFP, cmd), |
| GET_TCSS_ALT_FIELD(DP_MODE, cmd)); |
| |
| req.buf[1] = cmd; |
| |
| ret = send_pmc_req(DP_REQ, &req, res, PMC_IPC_ALT_REQ_SIZE); |
| if (ret) |
| return ret; |
| |
| send_pmc_dp_hpd_request(port, mux_data); |
| return 0; |
| } |
| |
| void update_tcss_mux(int port, struct tcss_mux mux_data) |
| { |
| struct pmc_ipc_buffer *rbuf = NULL; |
| int ret = 0; |
| |
| /* check if mux has a DP device */ |
| if (mux_data.dp) { |
| ret = send_pmc_connect_request(port, mux_data, rbuf); |
| if (ret) { |
| printk(BIOS_ERR, "Port %d connect request failed\n", port); |
| return; |
| } |
| ret = send_pmc_safe_mode_request(port, mux_data, rbuf); |
| if (ret) { |
| printk(BIOS_ERR, "Port %d safe mode request failed\n", port); |
| return; |
| } |
| |
| ret = send_pmc_dp_mode_request(port, mux_data, rbuf); |
| } |
| |
| if (ret) |
| printk(BIOS_ERR, "Port C%d mux set failed with error %d\n", port, ret); |
| } |
| |
| __weak void mainboard_early_tcss_enable(void) |
| { |
| /* to be overwritten by each mainboard that needs early tcss */ |
| } |