| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| |
| #define __SIMPLE_DEVICE__ |
| |
| #include <bootmode.h> |
| #include <console/console.h> |
| #include <device/pci.h> |
| #include <intelblocks/p2sb.h> |
| #include <intelblocks/pcr.h> |
| #include <intelblocks/pmc_ipc.h> |
| #include <intelblocks/systemagent.h> |
| #include <intelblocks/tcss.h> |
| #include <inttypes.h> |
| #include <lib.h> |
| #include <security/vboot/vboot_common.h> |
| #include <soc/pci_devs.h> |
| #include <soc/pcr_ids.h> |
| #include <soc/tcss.h> |
| #include <drivers/intel/pmc_mux/conn/chip.h> |
| |
| #define BIAS_CTRL_VW_INDEX_SHIFT 16 |
| #define BIAS_CTRL_BIT_POS_SHIFT 8 |
| #define WAIT_FOR_DISPLAYPORT_TIMEOUT_MS 1000 |
| #define WAIT_FOR_DP_MODE_ENTRY_TIMEOUT_MS 500 |
| #define WAIT_FOR_HPD_TIMEOUT_MS 3000 |
| |
| 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_disconnect_request(int port, const struct tcss_port_map *port_map) |
| { |
| uint32_t cmd; |
| struct pmc_ipc_buffer req = { 0 }; |
| struct pmc_ipc_buffer rsp; |
| |
| cmd = tcss_make_conn_cmd(PMC_IPC_TCSS_DISC_REQ_RES, port_map->usb3_port, |
| port_map->usb2_port, 0, 0, 0, 0); |
| |
| req.buf[0] = cmd; |
| |
| printk(BIOS_DEBUG, "port C%d DISC req: usage %d usb3 %d usb2 %d\n", |
| port, |
| GET_TCSS_CD_FIELD(USAGE, cmd), |
| GET_TCSS_CD_FIELD(USB3, cmd), |
| GET_TCSS_CD_FIELD(USB2, cmd)); |
| |
| return send_pmc_req(CONNECT_REQ, &req, &rsp, PMC_IPC_DISC_REQ_SIZE); |
| } |
| |
| static int send_pmc_connect_request(int port, const struct usbc_mux_info *mux_data, |
| const struct tcss_port_map *port_map) |
| { |
| uint32_t cmd; |
| struct pmc_ipc_buffer req = { 0 }; |
| struct pmc_ipc_buffer rsp; |
| |
| cmd = tcss_make_conn_cmd( |
| PMC_IPC_TCSS_CONN_REQ_RES, |
| port_map->usb3_port, |
| port_map->usb2_port, |
| mux_data->ufp, |
| mux_data->polarity, |
| mux_data->polarity, |
| mux_data->dbg_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, &rsp, PMC_IPC_CONN_REQ_SIZE); |
| } |
| |
| static int send_pmc_safe_mode_request(int port, const struct usbc_mux_info *mux_data, |
| const struct tcss_port_map *port_map) |
| { |
| uint32_t cmd; |
| struct pmc_ipc_buffer req = { 0 }; |
| struct pmc_ipc_buffer rsp; |
| |
| cmd = tcss_make_safe_mode_cmd(PMC_IPC_TCSS_SAFE_MODE_REQ_RES, port_map->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, &rsp, PMC_IPC_SAFE_REQ_SIZE); |
| } |
| |
| static int send_pmc_dp_hpd_request(int port, const struct usbc_mux_info *mux_data, |
| const struct tcss_port_map *port_map) |
| { |
| struct pmc_ipc_buffer req = { 0 }; |
| struct pmc_ipc_buffer rsp; |
| uint32_t cmd; |
| |
| cmd = tcss_make_hpd_mode_cmd( |
| PMC_IPC_TCSS_HPD_REQ_RES, |
| port_map->usb3_port, |
| mux_data->hpd_lvl, |
| mux_data->hpd_irq); |
| |
| req.buf[0] = cmd; |
| |
| return send_pmc_req(HPD_REQ, &req, &rsp, PMC_IPC_HPD_REQ_SIZE); |
| } |
| |
| static uint8_t get_dp_mode(uint8_t dp_pin_mode) |
| { |
| switch (dp_pin_mode) { |
| case MODE_DP_PIN_A: |
| case MODE_DP_PIN_B: |
| case MODE_DP_PIN_C: |
| case MODE_DP_PIN_D: |
| case MODE_DP_PIN_E: |
| case MODE_DP_PIN_F: |
| return log2(dp_pin_mode) + 1; |
| default: |
| return 0; |
| } |
| } |
| |
| static int send_pmc_dp_mode_request(int port, const struct usbc_mux_info *mux_data, |
| const struct tcss_port_map *port_map) |
| { |
| uint32_t cmd; |
| uint8_t dp_mode; |
| int ret; |
| |
| struct pmc_ipc_buffer req = { 0 }; |
| struct pmc_ipc_buffer rsp; |
| |
| cmd = tcss_make_alt_mode_cmd_buf_0( |
| PMC_IPC_TCSS_ALTMODE_REQ_RES, |
| port_map->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)); |
| |
| dp_mode = get_dp_mode(mux_data->dp_pin_mode); |
| 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, &rsp, PMC_IPC_ALT_REQ_SIZE); |
| if (ret) |
| return ret; |
| |
| send_pmc_dp_hpd_request(port, mux_data, port_map); |
| return 0; |
| } |
| |
| static void disconnect_tcss_devices(int port, const struct tcss_port_map *port_map) |
| { |
| int ret; |
| |
| ret = send_pmc_disconnect_request(port, port_map); |
| if (ret) |
| printk(BIOS_ERR, "Failed to setup port:%d to initial state\n", port); |
| } |
| |
| static void tcss_configure_dp_mode(const struct tcss_port_map *port_map, size_t num_ports) |
| { |
| int ret, port_bitmask; |
| size_t i; |
| const struct usbc_ops *ops; |
| struct usbc_mux_info mux_info; |
| const struct tcss_port_map *port_info; |
| |
| if (!display_init_required()) |
| return; |
| |
| ops = usbc_get_ops(); |
| if (ops == NULL) |
| return; |
| |
| port_bitmask = ops->dp_ops.wait_for_connection(WAIT_FOR_DISPLAYPORT_TIMEOUT_MS); |
| if (!port_bitmask) /* No DP device is connected */ |
| return; |
| |
| for (i = 0; i < num_ports; i++) { |
| if (!(port_bitmask & BIT(i))) |
| continue; |
| |
| ret = ops->dp_ops.enter_dp_mode(i); |
| if (ret < 0) |
| continue; |
| |
| ret = ops->dp_ops.wait_for_dp_mode_entry(i, WAIT_FOR_DP_MODE_ENTRY_TIMEOUT_MS); |
| if (ret < 0) |
| continue; |
| |
| ret = ops->dp_ops.wait_for_hpd(i, WAIT_FOR_HPD_TIMEOUT_MS); |
| if (ret < 0) |
| continue; |
| |
| ret = ops->mux_ops.get_mux_info(i, &mux_info); |
| if (ret < 0) |
| continue; |
| |
| port_info = &port_map[i]; |
| |
| ret = send_pmc_connect_request(i, &mux_info, port_info); |
| if (ret) { |
| printk(BIOS_ERR, "Port %zu connect request failed\n", i); |
| continue; |
| } |
| ret = send_pmc_safe_mode_request(i, &mux_info, port_info); |
| if (ret) { |
| printk(BIOS_ERR, "Port %zu safe mode request failed\n", i); |
| continue; |
| } |
| |
| ret = send_pmc_dp_mode_request(i, &mux_info, port_info); |
| if (ret) { |
| printk(BIOS_ERR, "Port C%zu mux set failed with error %d\n", i, ret); |
| } else { |
| printk(BIOS_INFO, "Port C%zu is configured to DP mode!\n", i); |
| return; |
| } |
| } |
| } |
| |
| static void tcss_configure_usb_mode(const struct tcss_port_map *port_map, size_t num_ports) |
| { |
| int ret; |
| size_t i; |
| const struct usbc_ops *ops; |
| struct usbc_mux_info mux_info; |
| const struct tcss_port_map *port_info; |
| |
| ops = usbc_get_ops(); |
| if (ops == NULL) |
| return; |
| |
| for (i = 0; i < num_ports; i++) { |
| ret = ops->mux_ops.get_mux_info(i, &mux_info); |
| if ((ret < 0) || !mux_info.usb || (mux_info.dp && mux_info.hpd_lvl)) |
| continue; |
| |
| port_info = &port_map[i]; |
| ret = send_pmc_connect_request(i, &mux_info, port_info); |
| if (ret) { |
| printk(BIOS_ERR, "Port %zu connect request failed\n", i); |
| continue; |
| } |
| } |
| } |
| |
| static uint32_t calc_bias_ctrl_reg_value(gpio_t pad) |
| { |
| unsigned int vw_index, vw_bit; |
| const unsigned int cpu_pid = gpio_get_pad_cpu_portid(pad); |
| if (!gpio_get_vw_info(pad, &vw_index, &vw_bit) || !cpu_pid) |
| return 0; |
| |
| return vw_index << BIAS_CTRL_VW_INDEX_SHIFT | |
| vw_bit << BIAS_CTRL_BIT_POS_SHIFT | |
| cpu_pid; |
| } |
| |
| void tcss_configure_aux_bias_pads_regbar( |
| const struct typec_aux_bias_pads *pads) |
| { |
| for (size_t i = 0; i < MAX_TYPE_C_PORTS; i++) { |
| if (pads[i].pad_auxn_dc && pads[i].pad_auxp_dc) { |
| REGBAR32(PID_IOM, IOM_AUX_BIAS_CTRL_PULLUP_OFFSET(i)) = |
| calc_bias_ctrl_reg_value(pads[i].pad_auxp_dc); |
| REGBAR32(PID_IOM, IOM_AUX_BIAS_CTRL_PULLDOWN_OFFSET(i)) = |
| calc_bias_ctrl_reg_value(pads[i].pad_auxn_dc); |
| } |
| } |
| } |
| |
| void ioe_tcss_configure_aux_bias_pads_sbi( |
| const struct typec_aux_bias_pads *pads) |
| { |
| for (size_t i = 0; i < MAX_TYPE_C_PORTS; i++) { |
| if (pads[i].pad_auxn_dc && pads[i].pad_auxp_dc) { |
| ioe_p2sb_sbi_write(PID_IOM, IOM_AUX_BIAS_CTRL_PULLUP_OFFSET(i), |
| calc_bias_ctrl_reg_value(pads[i].pad_auxp_dc)); |
| ioe_p2sb_sbi_write(PID_IOM, IOM_AUX_BIAS_CTRL_PULLDOWN_OFFSET(i), |
| calc_bias_ctrl_reg_value(pads[i].pad_auxn_dc)); |
| } |
| } |
| } |
| |
| const struct tcss_port_map *tcss_get_port_info(size_t *num_ports) |
| { |
| static struct tcss_port_map port_map[MAX_TYPE_C_PORTS]; |
| size_t active_ports = 0; |
| size_t port; |
| |
| for (port = 0; port < MAX_TYPE_C_PORTS; port++) { |
| const struct device_path conn_path[] = { |
| {.type = DEVICE_PATH_PCI, .pci.devfn = PCH_DEVFN_PMC}, |
| {.type = DEVICE_PATH_GENERIC, .generic.id = 0, .generic.subid = 0}, |
| {.type = DEVICE_PATH_GENERIC, .generic.id = port}, |
| }; |
| const struct device *conn = find_dev_nested_path(pci_root_bus(), conn_path, |
| ARRAY_SIZE(conn_path)); |
| unsigned int usb2_port, usb3_port; |
| |
| if (!is_dev_enabled(conn)) |
| continue; |
| |
| if (CONFIG(DRIVERS_INTEL_PMC) && |
| intel_pmc_mux_conn_get_ports(conn, &usb2_port, &usb3_port)) { |
| port_map[active_ports].usb2_port = usb2_port; |
| port_map[active_ports].usb3_port = usb3_port; |
| ++active_ports; |
| } |
| } |
| |
| *num_ports = active_ports; |
| return port_map; |
| } |
| |
| void tcss_configure(const struct typec_aux_bias_pads aux_bias_pads[MAX_TYPE_C_PORTS]) |
| { |
| const struct tcss_port_map *port_map; |
| size_t num_ports; |
| size_t i; |
| |
| port_map = tcss_get_port_info(&num_ports); |
| if ((port_map == NULL) || platform_is_resuming()) |
| return; |
| |
| if (CONFIG(TCSS_HAS_USBC_OPS)) |
| for (i = 0; i < num_ports; i++) |
| disconnect_tcss_devices(i, &port_map[i]); |
| |
| /* This should be performed before alternate modes are entered */ |
| if (tcss_ops.configure_aux_bias_pads) |
| tcss_ops.configure_aux_bias_pads(aux_bias_pads); |
| |
| if (CONFIG(ENABLE_TCSS_DISPLAY_DETECTION)) |
| tcss_configure_dp_mode(port_map, num_ports); |
| |
| if (CONFIG(ENABLE_TCSS_USB_DETECTION)) |
| tcss_configure_usb_mode(port_map, num_ports); |
| } |
| |
| bool tcss_valid_tbt_auth(void) |
| { |
| return REGBAR32(PID_IOM, IOM_CSME_IMR_TBT_STATUS) & TBT_VALID_AUTHENTICATION; |
| } |