diff options
author | Tim Wawrzynczak <twawrzynczak@chromium.org> | 2021-03-22 16:39:57 -0600 |
---|---|---|
committer | Patrick Georgi <pgeorgi@google.com> | 2021-03-28 16:04:23 +0000 |
commit | eb6ebc025ed5de4985ef756efe38917fca827981 (patch) | |
tree | 943e7e0f75ae3446345746127a6d16cd3b438e1d /src/soc/intel/common | |
parent | 6edbb18901565d60bc61fda9ac75da08cb94ff84 (diff) | |
download | coreboot-eb6ebc025ed5de4985ef756efe38917fca827981.tar.xz |
soc/intel/tigerlake: Move TCSS code to intel/common/block
The Type-C subsystem ("TCSS") IP block is similar between TGL and
ADL. For pre-boot purposes, the limited amount of functionality required
appears to be common between the two, therefore move the functionality
to intel/common/block and rename from `early_tcss to `tcss` along the way.
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: I1c6bb9c7098691f0c828f9d5ab4bd522515ae966
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51753
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/intel/common')
-rw-r--r-- | src/soc/intel/common/block/include/intelblocks/tcss.h | 158 | ||||
-rw-r--r-- | src/soc/intel/common/block/tcss/Kconfig | 10 | ||||
-rw-r--r-- | src/soc/intel/common/block/tcss/Makefile.inc | 1 | ||||
-rw-r--r-- | src/soc/intel/common/block/tcss/tcss.c | 325 |
4 files changed, 494 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/include/intelblocks/tcss.h b/src/soc/intel/common/block/include/intelblocks/tcss.h new file mode 100644 index 0000000000..68e279ca2a --- /dev/null +++ b/src/soc/intel/common/block/include/intelblocks/tcss.h @@ -0,0 +1,158 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef _TCSS_H_ +#define _TCSS_H_ + +/* PMC IPC related offsets and commands */ +#define PMC_IPC_USBC_CMD_ID 0xA7 +#define PMC_IPC_USBC_SUBCMD_ID 0x0 +#define PMC_IPC_CMD 0x0 +#define PMC_IPC_TCSS_CONN_REQ_RES 0x0 +#define PMC_IPC_TCSS_DISC_REQ_RES 0x1 +#define PMC_IPC_TCSS_SAFE_MODE_REQ_RES 0x2 +#define PMC_IPC_TCSS_ALTMODE_REQ_RES 0x3 +#define PMC_IPC_TCSS_HPD_REQ_RES 0x4 +#define PMC_IPC_CONN_REQ_SIZE 2 +#define PMC_IPC_DISC_REQ_SIZE 2 +#define PMC_IPC_ALT_REQ_SIZE 8 +#define PMC_IPC_SAFE_REQ_SIZE 1 +#define PMC_IPC_HPD_REQ_SIZE 2 +#define PMC_IPC_DP_MODE 1 + +#define TCSS_CD_USAGE_SHIFT 0 +#define TCSS_CD_USAGE_MASK 0x0f +#define TCSS_CD_USB3_SHIFT 4 +#define TCSS_CD_USB3_MASK 0x0f +#define TCSS_CD_USB2_SHIFT 8 +#define TCSS_CD_USB2_MASK 0x0f +#define TCSS_CD_UFP_SHIFT 12 +#define TCSS_CD_UFP_MASK 0x01 +#define TCSS_CD_HSL_SHIFT 13 +#define TCSS_CD_HSL_MASK 0x01 +#define TCSS_CD_SBU_SHIFT 14 +#define TCSS_CD_SBU_MASK 0x01 +#define TCSS_CD_ACC_SHIFT 15 +#define TCSS_CD_ACC_MASK 0x01 +#define TCSS_CD_FAILED_SHIFT 16 +#define TCSS_CD_FAILED_MASK 0x01 +#define TCSS_CD_FATAL_SHIFT 17 +#define TCSS_CD_FATAL_MASK 0x01 + +#define TCSS_ALT_USAGE_SHIFT 0 +#define TCSS_ALT_USAGE_MASK 0x0f +#define TCSS_ALT_USB3_SHIFT 4 +#define TCSS_ALT_USB3_MASK 0x0f +#define TCSS_ALT_MODE_SHIFT 12 +#define TCSS_ALT_MODE_MASK 0x0f +#define TCSS_ALT_POLARITY_SHIFT 1 +#define TCSS_ALT_POLARITY_MASK 0x01 +#define TCSS_ALT_CABLE_SHIFT 2 +#define TCSS_ALT_CABLE_MASK 0x01 +#define TCSS_ALT_UFP_SHIFT 3 +#define TCSS_ALT_UFP_MASK 0x01 +#define TCSS_ALT_DP_MODE_SHIFT 8 +#define TCSS_ALT_DP_MODE_MASK 0x0f +#define TCSS_ALT_FAILED_SHIFT 8 +#define TCSS_ALT_FAILED_MASK 0x01 +#define TCSS_ALT_FATAL_SHIFT 9 +#define TCSS_ALT_FATAL_MASK 0x01 + +#define TCSS_HPD_USAGE_SHIFT 0 +#define TCSS_HPD_USAGE_MASK 0x0f +#define TCSS_HPD_USB3_SHIFT 4 +#define TCSS_HPD_USB3_MASK 0x0f +#define TCSS_HPD_LVL_SHIFT 12 +#define TCSS_HPD_LVL_MASK 0x01 +#define TCSS_HPD_IRQ_SHIFT 13 +#define TCSS_HPD_IRQ_MASK 0x01 + +#define MAX_TYPE_C_PORTS 4 + +#define TCSS_CD_FIELD(name, val) \ + (((val) & TCSS_CD_##name##_MASK) << TCSS_CD_##name##_SHIFT) + +#define GET_TCSS_CD_FIELD(name, val) \ + (((val) >> TCSS_CD_##name##_SHIFT) & TCSS_CD_##name##_MASK) + + +#define TCSS_ALT_FIELD(name, val) \ + (((val) & TCSS_ALT_##name##_MASK) << TCSS_ALT_##name##_SHIFT) + +#define TCSS_HPD_FIELD(name, val) \ + (((val) & TCSS_HPD_##name##_MASK) << TCSS_HPD_##name##_SHIFT) + +#define GET_TCSS_ALT_FIELD(name, val) \ + (((val) >> TCSS_ALT_##name##_SHIFT) & TCSS_ALT_##name##_MASK) + +#define TCSS_CONN_STATUS_HAS_FAILED(s) GET_TCSS_CD_FIELD(FAILED, s) +#define TCSS_STATUS_HAS_FAILED(s) GET_TCSS_ALT_FIELD(FAILED, s) +/* !fatal means retry */ +#define TCSS_CONN_STATUS_IS_FATAL(s) GET_TCSS_CD_FIELD(FATAL, s) +#define TCSS_STATUS_IS_FATAL(s) GET_TCSS_ALT_FIELD(FATAL, s) + +#define USB_2_PORT_MASK 0x0f +#define USB_3_PORT_MASK 0xf0 + +/* TCSS connection modes for PMC */ +enum pmc_ipc_conn_mode { + PMC_IPC_TCSS_DISCONNECT_MODE, + PMC_IPC_TCSS_USB_MODE, + PMC_IPC_TCSS_ALTERNATE_MODE, + PMC_IPC_TCSS_SAFE_MODE, + PMC_IPC_TCSS_HPD_MODE, + PMC_IPC_TCSS_TOTAL_MODES, +}; + +enum pmc_ipc_command_type { + CONNECT_REQ, + SAFE_REQ, + DP_REQ, + HPD_REQ, +}; + +/* DP Mode pin definitions */ +#define MODE_DP_PIN_A BIT(0) +#define MODE_DP_PIN_B BIT(1) +#define MODE_DP_PIN_C BIT(2) +#define MODE_DP_PIN_D BIT(3) +#define MODE_DP_PIN_E BIT(4) +#define MODE_DP_PIN_F BIT(5) + +/* struct to hold all tcss_mux related variables */ +struct tcss_mux_info { + bool dp; /* DP connected */ + bool usb; /* USB connected */ + bool cable; /* Activ/Passive Cable */ + bool polarity; /* polarity of connected device */ + bool hpd_lvl; /* HPD Level assert */ + bool hpd_irq; /* HPD IRQ assert */ + bool ufp; + bool acc; + uint8_t dp_mode; /* DP Operation Mode */ +}; + +struct tcss_port_map { + uint8_t usb2_port; /* USB2 Port Number */ + uint8_t usb3_port; /* USB3 Port Number */ +}; + +void tcss_configure(void); + +/* + * Mainboard method to setup any mux config needed for TCSS display operations. + * This function will need to obtain any mux data needed to forward to IOM/PMC + * Since the mux data may be stored differently by different mainboards this + * function must be defined by mainboard with its specific mux data stored in a + * tcss_mux_info struct as defined above. + * Returns completed tcss_mux_info structure for the specified port + */ +const struct tcss_mux_info *mainboard_tcss_get_mux_info(int port); + +/* + * Mainboard method to get only the port information to initialize the muxes to + * disconnect mode during boot. + * returns tscc_port_map of all ports on system + */ +const struct tcss_port_map *mainboard_tcss_get_port_info(size_t *num_ports); + +#endif /* _TCSS_H_ */ diff --git a/src/soc/intel/common/block/tcss/Kconfig b/src/soc/intel/common/block/tcss/Kconfig new file mode 100644 index 0000000000..f35390178e --- /dev/null +++ b/src/soc/intel/common/block/tcss/Kconfig @@ -0,0 +1,10 @@ +config SOC_INTEL_COMMON_BLOCK_TCSS + def_bool n + help + Sets up USB2/3 port mapping in TCSS MUX and sets MUX to disconnect state + +config TCSS_DISPLAY + bool "Enable early TCSS display" + depends on SOC_INTEL_COMMON_BLOCK_TCSS && RUN_FSP_GOP + help + Enable displays to be detected over Type-C ports during boot. diff --git a/src/soc/intel/common/block/tcss/Makefile.inc b/src/soc/intel/common/block/tcss/Makefile.inc new file mode 100644 index 0000000000..a3910808f8 --- /dev/null +++ b/src/soc/intel/common/block/tcss/Makefile.inc @@ -0,0 +1 @@ +ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_TCSS) += tcss.c diff --git a/src/soc/intel/common/block/tcss/tcss.c b/src/soc/intel/common/block/tcss/tcss.c new file mode 100644 index 0000000000..97805f55e6 --- /dev/null +++ b/src/soc/intel/common/block/tcss/tcss.c @@ -0,0 +1,325 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#include <bootmode.h> +#include <console/console.h> +#include <device/pci.h> +#include <intelblocks/pmc_ipc.h> +#include <intelblocks/tcss.h> +#include <inttypes.h> +#include <security/vboot/vboot_common.h> +#include <soc/pci_devs.h> +#include <stdlib.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_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 tcss_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->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 tcss_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 tcss_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 int send_pmc_dp_mode_request(int port, const struct tcss_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)); + + 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, &rsp, PMC_IPC_ALT_REQ_SIZE); + if (ret) + return ret; + + send_pmc_dp_hpd_request(port, mux_data, port_map); + return 0; +} + +static void tcss_init_mux(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; + size_t i; + const struct tcss_mux_info *mux_info; + const struct tcss_port_map *port_info; + + if (!display_init_required()) + return; + + for (i = 0; i < num_ports; i++) { + mux_info = mainboard_tcss_get_mux_info(i); + port_info = &port_map[i]; + + if (!mux_info->dp) + continue; + + ret = send_pmc_connect_request(i, mux_info, port_info); + if (ret) { + printk(BIOS_ERR, "Port %zd connect request failed\n", i); + continue; + } + ret = send_pmc_safe_mode_request(i, mux_info, port_info); + if (ret) { + printk(BIOS_ERR, "Port %zd 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%zd mux set failed with error %d\n", i, ret); + } +} + +void tcss_configure(void) +{ + const struct tcss_port_map *port_map; + size_t num_ports; + size_t i; + + port_map = mainboard_tcss_get_port_info(&num_ports); + if (port_map == NULL) + return; + + for (i = 0; i < num_ports; i++) + tcss_init_mux(i, &port_map[i]); + + if (CONFIG(TCSS_DISPLAY)) + tcss_configure_dp_mode(port_map, num_ports); +} |