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/* 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 */
}
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