/* Copyright 2014 The Chromium OS Authors. All rights reserved. * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "atomic.h" #include "charge_manager.h" #include "common.h" #include "console.h" #include "ec_commands.h" #include "flash.h" #include "gpio.h" #include "hooks.h" #include "host_command.h" #include "mkbp_event.h" #include "registers.h" #include "rsa.h" #include "sha256.h" #include "system.h" #include "task.h" #include "tcpm.h" #include "timer.h" #include "util.h" #include "usb_api.h" #include "usb_common.h" #include "usb_pd.h" #include "usbc_ppc.h" #include "version.h" #ifdef CONFIG_COMMON_RUNTIME #define CPRINTS(format, args...) cprints(CC_USBPD, format, ## args) #define CPRINTF(format, args...) cprintf(CC_USBPD, format, ## args) #else #define CPRINTS(format, args...) #define CPRINTF(format, args...) #endif static int rw_flash_changed = 1; #ifdef CONFIG_MKBP_EVENT static int dp_alt_mode_entry_get_next_event(uint8_t *data) { return EC_SUCCESS; } DECLARE_EVENT_SOURCE(EC_MKBP_EVENT_DP_ALT_MODE_ENTERED, dp_alt_mode_entry_get_next_event); void pd_notify_dp_alt_mode_entry(void) { CPRINTS("Notifying AP of DP Alt Mode Entry..."); mkbp_send_event(EC_MKBP_EVENT_DP_ALT_MODE_ENTERED); } #endif /* CONFIG_MKBP_EVENT */ int pd_check_requested_voltage(uint32_t rdo, const int port) { int max_ma = rdo & 0x3FF; int op_ma = (rdo >> 10) & 0x3FF; int idx = RDO_POS(rdo); uint32_t pdo; uint32_t pdo_ma; #if defined(CONFIG_USB_PD_DYNAMIC_SRC_CAP) || \ defined(CONFIG_USB_PD_MAX_SINGLE_SOURCE_CURRENT) const uint32_t *src_pdo; const int pdo_cnt = charge_manager_get_source_pdo(&src_pdo, port); #else const uint32_t *src_pdo = pd_src_pdo; const int pdo_cnt = pd_src_pdo_cnt; #endif /* Board specific check for this request */ if (pd_board_check_request(rdo, pdo_cnt)) return EC_ERROR_INVAL; /* check current ... */ pdo = src_pdo[idx - 1]; pdo_ma = (pdo & 0x3ff); if (op_ma > pdo_ma) return EC_ERROR_INVAL; /* too much op current */ if (max_ma > pdo_ma && !(rdo & RDO_CAP_MISMATCH)) return EC_ERROR_INVAL; /* too much max current */ CPRINTF("Requested %d V %d mA (for %d/%d mA)\n", ((pdo >> 10) & 0x3ff) * 50, (pdo & 0x3ff) * 10, op_ma * 10, max_ma * 10); /* Accept the requested voltage */ return EC_SUCCESS; } __attribute__((weak)) int pd_board_check_request(uint32_t rdo, int pdo_cnt) { int idx = RDO_POS(rdo); /* Check for invalid index */ return (!idx || idx > pdo_cnt) ? EC_ERROR_INVAL : EC_SUCCESS; } #ifdef CONFIG_USB_PD_DUAL_ROLE /* Last received source cap */ static uint32_t pd_src_caps[CONFIG_USB_PD_PORT_COUNT][PDO_MAX_OBJECTS]; static uint8_t pd_src_cap_cnt[CONFIG_USB_PD_PORT_COUNT]; /* Cap on the max voltage requested as a sink (in millivolts) */ static unsigned max_request_mv = PD_MAX_VOLTAGE_MV; /* no cap */ const uint32_t * const pd_get_src_caps(int port) { ASSERT(port < CONFIG_USB_PD_PORT_COUNT); return pd_src_caps[port]; } uint8_t pd_get_src_cap_cnt(int port) { ASSERT(port < CONFIG_USB_PD_PORT_COUNT); return pd_src_cap_cnt[port]; } uint32_t get_max_request_mv(void) { return max_request_mv; } void pd_process_source_cap(int port, int cnt, uint32_t *src_caps) { #ifdef CONFIG_CHARGE_MANAGER uint32_t ma, mv, pdo; #endif int i; pd_src_cap_cnt[port] = cnt; for (i = 0; i < cnt; i++) pd_src_caps[port][i] = *src_caps++; #ifdef CONFIG_CHARGE_MANAGER /* Get max power info that we could request */ pd_find_pdo_index(pd_get_src_cap_cnt(port), pd_get_src_caps(port), PD_MAX_VOLTAGE_MV, &pdo); pd_extract_pdo_power(pdo, &ma, &mv); /* Set max. limit, but apply 500mA ceiling */ charge_manager_set_ceil(port, CEIL_REQUESTOR_PD, PD_MIN_MA); pd_set_input_current_limit(port, ma, mv); #endif } void pd_set_max_voltage(unsigned mv) { max_request_mv = mv; } unsigned pd_get_max_voltage(void) { return max_request_mv; } int pd_charge_from_device(uint16_t vid, uint16_t pid) { /* TODO: rewrite into table if we get more of these */ /* * White-list Apple charge-through accessory since it doesn't set * externally powered bit, but we still need to charge from it when * we are a sink. */ return (vid == USB_VID_APPLE && (pid == 0x1012 || pid == 0x1013)); } #endif /* CONFIG_USB_PD_DUAL_ROLE */ static struct pd_cable cable[CONFIG_USB_PD_PORT_COUNT]; static uint8_t is_transmit_msg_sop_prime(int port) { if (IS_ENABLED(CONFIG_USB_PD_DECODE_SOP)) return !!(cable[port].flags & CABLE_FLAGS_SOP_PRIME_ENABLE); return 0; } uint8_t is_sop_prime_ready(int port, uint8_t data_role, uint32_t pd_flags) { /* * Ref: USB PD 3.0 sec 2.5.4: When an Explicit Contract is in place the * VCONN Source (either the DFP or the UFP) can communicate with the * Cable Plug(s) using SOP’/SOP’’ Packets * * Ref: USB PD 2.0 sec 2.4.4: When an Explicit Contract is in place the * DFP (either the Source or the Sink) can communicate with the * Cable Plug(s) using SOP’/SOP” Packets. * Sec 3.6.11 : Before communicating with a Cable Plug a Port Should * ensure that it is the Vconn Source */ if (pd_flags & PD_FLAGS_VCONN_ON && (IS_ENABLED(CONFIG_USB_PD_REV30) || data_role == PD_ROLE_DFP)) return is_transmit_msg_sop_prime(port); return 0; } void reset_pd_cable(int port) { if (IS_ENABLED(CONFIG_USB_PD_DECODE_SOP)) memset(&cable[port], 0, sizeof(cable[port])); } uint8_t get_usb_pd_mux_cable_type(int port) { return cable[port].type; } #ifdef CONFIG_USB_PD_ALT_MODE #ifdef CONFIG_USB_PD_ALT_MODE_DFP static struct pd_policy pe[CONFIG_USB_PD_PORT_COUNT]; static int is_vdo_present(int cnt, int index) { return cnt > index; } static void enable_transmit_sop_prime(int port) { cable[port].flags |= CABLE_FLAGS_SOP_PRIME_ENABLE; } static void disable_transmit_sop_prime(int port) { cable[port].flags &= ~CABLE_FLAGS_SOP_PRIME_ENABLE; } void pd_dfp_pe_init(int port) { memset(&pe[port], 0, sizeof(struct pd_policy)); } static void dfp_consume_identity(int port, int cnt, uint32_t *payload) { int ptype = PD_IDH_PTYPE(payload[VDO_I(IDH)]); size_t identity_size = MIN(sizeof(pe[port].identity), (cnt - 1) * sizeof(uint32_t)); pd_dfp_pe_init(port); memcpy(&pe[port].identity, payload + 1, identity_size); switch (ptype) { case IDH_PTYPE_AMA: /* Leave vbus ON if the following macro is false */ #if defined(CONFIG_USB_PD_DUAL_ROLE) && defined(CONFIG_USBC_VCONN_SWAP) /* Adapter is requesting vconn, try to supply it */ if (PD_VDO_AMA_VCONN_REQ(payload[VDO_I(AMA)])) pd_try_vconn_src(port); /* Only disable vbus if vconn was requested */ if (PD_VDO_AMA_VCONN_REQ(payload[VDO_I(AMA)]) && !PD_VDO_AMA_VBUS_REQ(payload[VDO_I(AMA)])) pd_power_supply_reset(port); #endif break; default: break; } } static void dfp_consume_cable_response(int port, int cnt, uint32_t *payload) { if (cable[port].is_identified) return; if (is_vdo_present(cnt, VDO_INDEX_IDH)) { cable[port].type = PD_IDH_PTYPE(payload[VDO_INDEX_IDH]); if (is_vdo_present(cnt, VDO_INDEX_PTYPE_CABLE1)) cable[port].attr.raw_value = payload[VDO_INDEX_PTYPE_CABLE1]; } /* * Ref USB PD Spec 3.0 Pg 145. For active cable there are two VDOs. * Hence storing the second VDO. */ if (IS_ENABLED(CONFIG_USB_PD_REV30) && is_vdo_present(cnt, VDO_INDEX_PTYPE_CABLE2) && cable[port].type == IDH_PTYPE_ACABLE) { cable[port].rev = PD_REV30; cable[port].attr2.raw_value = payload[VDO_INDEX_PTYPE_CABLE2]; } cable[port].is_identified = 1; } static int dfp_discover_ident(uint32_t *payload) { payload[0] = VDO(USB_SID_PD, 1, CMD_DISCOVER_IDENT); return 1; } static int dfp_discover_svids(uint32_t *payload) { payload[0] = VDO(USB_SID_PD, 1, CMD_DISCOVER_SVID); return 1; } static void dfp_consume_svids(int port, int cnt, uint32_t *payload) { int i; uint32_t *ptr = payload + 1; int vdo = 1; uint16_t svid0, svid1; for (i = pe[port].svid_cnt; i < pe[port].svid_cnt + 12; i += 2) { if (i == SVID_DISCOVERY_MAX) { CPRINTF("ERR:SVIDCNT\n"); break; } /* * Verify we're still within the valid packet (count will be one * for the VDM header + xVDOs) */ if (vdo >= cnt) break; svid0 = PD_VDO_SVID_SVID0(*ptr); if (!svid0) break; pe[port].svids[i].svid = svid0; pe[port].svid_cnt++; svid1 = PD_VDO_SVID_SVID1(*ptr); if (!svid1) break; pe[port].svids[i + 1].svid = svid1; pe[port].svid_cnt++; ptr++; vdo++; } /* TODO(tbroch) need to re-issue discover svids if > 12 */ if (i && ((i % 12) == 0)) CPRINTF("ERR:SVID+12\n"); } static int dfp_discover_modes(int port, uint32_t *payload) { uint16_t svid = pe[port].svids[pe[port].svid_idx].svid; if (pe[port].svid_idx >= pe[port].svid_cnt) return 0; payload[0] = VDO(svid, 1, CMD_DISCOVER_MODES); return 1; } static void dfp_consume_modes(int port, int cnt, uint32_t *payload) { int idx = pe[port].svid_idx; pe[port].svids[idx].mode_cnt = cnt - 1; if (pe[port].svids[idx].mode_cnt < 0) { CPRINTF("ERR:NOMODE\n"); } else { memcpy(pe[port].svids[pe[port].svid_idx].mode_vdo, &payload[1], sizeof(uint32_t) * pe[port].svids[idx].mode_cnt); } pe[port].svid_idx++; } static int get_mode_idx(int port, uint16_t svid) { int i; for (i = 0; i < PD_AMODE_COUNT; i++) { if (pe[port].amodes[i].fx->svid == svid) return i; } return -1; } static struct svdm_amode_data *get_modep(int port, uint16_t svid) { int idx = get_mode_idx(port, svid); return (idx == -1) ? NULL : &pe[port].amodes[idx]; } int pd_alt_mode(int port, uint16_t svid) { struct svdm_amode_data *modep = get_modep(port, svid); return (modep) ? modep->opos : -1; } int allocate_mode(int port, uint16_t svid) { int i, j; struct svdm_amode_data *modep; int mode_idx = get_mode_idx(port, svid); if (mode_idx != -1) return mode_idx; /* There's no space to enter another mode */ if (pe[port].amode_idx == PD_AMODE_COUNT) { CPRINTF("ERR:NO AMODE SPACE\n"); return -1; } /* Allocate ... if SVID == 0 enter default supported policy */ for (i = 0; i < supported_modes_cnt; i++) { for (j = 0; j < pe[port].svid_cnt; j++) { struct svdm_svid_data *svidp = &pe[port].svids[j]; if ((svidp->svid != supported_modes[i].svid) || (svid && (svidp->svid != svid))) continue; modep = &pe[port].amodes[pe[port].amode_idx]; modep->fx = &supported_modes[i]; modep->data = &pe[port].svids[j]; pe[port].amode_idx++; return pe[port].amode_idx - 1; } } return -1; } /* * Enter default mode ( payload[0] == 0 ) or attempt to enter mode via svid & * opos */ uint32_t pd_dfp_enter_mode(int port, uint16_t svid, int opos) { int mode_idx = allocate_mode(port, svid); struct svdm_amode_data *modep; uint32_t mode_caps; if (mode_idx == -1) return 0; modep = &pe[port].amodes[mode_idx]; if (!opos) { /* choose the lowest as default */ modep->opos = 1; } else if (opos <= modep->data->mode_cnt) { modep->opos = opos; } else { CPRINTF("opos error\n"); return 0; } mode_caps = modep->data->mode_vdo[modep->opos - 1]; if (modep->fx->enter(port, mode_caps) == -1) return 0; /* SVDM to send to UFP for mode entry */ return VDO(modep->fx->svid, 1, CMD_ENTER_MODE | VDO_OPOS(modep->opos)); } static int validate_mode_request(struct svdm_amode_data *modep, uint16_t svid, int opos) { if (!modep->fx) return 0; if (svid != modep->fx->svid) { CPRINTF("ERR:svid r:0x%04x != c:0x%04x\n", svid, modep->fx->svid); return 0; } if (opos != modep->opos) { CPRINTF("ERR:opos r:%d != c:%d\n", opos, modep->opos); return 0; } return 1; } static void dfp_consume_attention(int port, uint32_t *payload) { uint16_t svid = PD_VDO_VID(payload[0]); int opos = PD_VDO_OPOS(payload[0]); struct svdm_amode_data *modep = get_modep(port, svid); if (!modep || !validate_mode_request(modep, svid, opos)) return; if (modep->fx->attention) modep->fx->attention(port, payload); } /* * This algorithm defaults to choosing higher pin config over lower ones in * order to prefer multi-function if desired. * * NAME | SIGNALING | OUTPUT TYPE | MULTI-FUNCTION | PIN CONFIG * ------------------------------------------------------------- * A | USB G2 | ? | no | 00_0001 * B | USB G2 | ? | yes | 00_0010 * C | DP | CONVERTED | no | 00_0100 * D | PD | CONVERTED | yes | 00_1000 * E | DP | DP | no | 01_0000 * F | PD | DP | yes | 10_0000 * * if UFP has NOT asserted multi-function preferred code masks away B/D/F * leaving only A/C/E. For single-output dongles that should leave only one * possible pin config depending on whether its a converter DP->(VGA|HDMI) or DP * output. If UFP is a USB-C receptacle it may assert C/D/E/F. The DFP USB-C * receptacle must always choose C/D in those cases. */ int pd_dfp_dp_get_pin_mode(int port, uint32_t status) { struct svdm_amode_data *modep = get_modep(port, USB_SID_DISPLAYPORT); uint32_t mode_caps; uint32_t pin_caps; if (!modep) return 0; mode_caps = modep->data->mode_vdo[modep->opos - 1]; /* TODO(crosbug.com/p/39656) revisit with DFP that can be a sink */ pin_caps = PD_DP_PIN_CAPS(mode_caps); /* if don't want multi-function then ignore those pin configs */ if (!PD_VDO_DPSTS_MF_PREF(status)) pin_caps &= ~MODE_DP_PIN_MF_MASK; /* TODO(crosbug.com/p/39656) revisit if DFP drives USB Gen 2 signals */ pin_caps &= ~MODE_DP_PIN_BR2_MASK; /* if C/D present they have precedence over E/F for USB-C->USB-C */ if (pin_caps & (MODE_DP_PIN_C | MODE_DP_PIN_D)) pin_caps &= ~(MODE_DP_PIN_E | MODE_DP_PIN_F); /* get_next_bit returns undefined for zero */ if (!pin_caps) return 0; return 1 << get_next_bit(&pin_caps); } int pd_dfp_exit_mode(int port, uint16_t svid, int opos) { struct svdm_amode_data *modep; int idx; /* * Empty svid signals we should reset DFP VDM state by exiting all * entered modes then clearing state. This occurs when we've * disconnected or for hard reset. */ if (!svid) { for (idx = 0; idx < PD_AMODE_COUNT; idx++) if (pe[port].amodes[idx].fx) pe[port].amodes[idx].fx->exit(port); pd_dfp_pe_init(port); return 0; } /* * TODO(crosbug.com/p/33946) : below needs revisited to allow multiple * mode exit. Additionally it should honor OPOS == 7 as DFP's request * to exit all modes. We currently don't have any UFPs that support * multiple modes on one SVID. */ modep = get_modep(port, svid); if (!modep || !validate_mode_request(modep, svid, opos)) return 0; /* call DFPs exit function */ modep->fx->exit(port); /* exit the mode */ modep->opos = 0; return 1; } uint16_t pd_get_identity_vid(int port) { return PD_IDH_VID(pe[port].identity[0]); } uint16_t pd_get_identity_pid(int port) { return PD_PRODUCT_PID(pe[port].identity[2]); } #ifdef CONFIG_CMD_USB_PD_PE static void dump_pe(int port) { const char * const idh_ptype_names[] = { "UNDEF", "Hub", "Periph", "PCable", "ACable", "AMA", "RSV6", "RSV7"}; int i, j, idh_ptype; struct svdm_amode_data *modep; uint32_t mode_caps; if (pe[port].identity[0] == 0) { ccprintf("No identity discovered yet.\n"); return; } idh_ptype = PD_IDH_PTYPE(pe[port].identity[0]); ccprintf("IDENT:\n"); ccprintf("\t[ID Header] %08x :: %s, VID:%04x\n", pe[port].identity[0], idh_ptype_names[idh_ptype], pd_get_identity_vid(port)); ccprintf("\t[Cert Stat] %08x\n", pe[port].identity[1]); for (i = 2; i < ARRAY_SIZE(pe[port].identity); i++) { ccprintf("\t"); if (pe[port].identity[i]) ccprintf("[%d] %08x ", i, pe[port].identity[i]); } ccprintf("\n"); if (pe[port].svid_cnt < 1) { ccprintf("No SVIDS discovered yet.\n"); return; } for (i = 0; i < pe[port].svid_cnt; i++) { ccprintf("SVID[%d]: %04x MODES:", i, pe[port].svids[i].svid); for (j = 0; j < pe[port].svids[j].mode_cnt; j++) ccprintf(" [%d] %08x", j + 1, pe[port].svids[i].mode_vdo[j]); ccprintf("\n"); modep = get_modep(port, pe[port].svids[i].svid); if (modep) { mode_caps = modep->data->mode_vdo[modep->opos - 1]; ccprintf("MODE[%d]: svid:%04x caps:%08x\n", modep->opos, modep->fx->svid, mode_caps); } } } static int command_pe(int argc, char **argv) { int port; char *e; if (argc < 3) return EC_ERROR_PARAM_COUNT; /* command: pe */ port = strtoi(argv[1], &e, 10); if (*e || port >= CONFIG_USB_PD_PORT_COUNT) return EC_ERROR_PARAM2; if (!strncasecmp(argv[2], "dump", 4)) dump_pe(port); return EC_SUCCESS; } DECLARE_CONSOLE_COMMAND(pe, command_pe, " dump", "USB PE"); #endif /* CONFIG_CMD_USB_PD_PE */ #endif /* CONFIG_USB_PD_ALT_MODE_DFP */ int pd_svdm(int port, int cnt, uint32_t *payload, uint32_t **rpayload) { int cmd = PD_VDO_CMD(payload[0]); int cmd_type = PD_VDO_CMDT(payload[0]); int (*func)(int port, uint32_t *payload) = NULL; int rsize = 1; /* VDM header at a minimum */ payload[0] &= ~VDO_CMDT_MASK; *rpayload = payload; if (cmd_type == CMDT_INIT) { switch (cmd) { case CMD_DISCOVER_IDENT: func = svdm_rsp.identity; break; case CMD_DISCOVER_SVID: func = svdm_rsp.svids; break; case CMD_DISCOVER_MODES: func = svdm_rsp.modes; break; case CMD_ENTER_MODE: func = svdm_rsp.enter_mode; break; case CMD_DP_STATUS: if (svdm_rsp.amode) func = svdm_rsp.amode->status; break; case CMD_DP_CONFIG: if (svdm_rsp.amode) func = svdm_rsp.amode->config; break; case CMD_EXIT_MODE: func = svdm_rsp.exit_mode; break; #ifdef CONFIG_USB_PD_ALT_MODE_DFP case CMD_ATTENTION: /* * attention is only SVDM with no response * (just goodCRC) return zero here. */ dfp_consume_attention(port, payload); return 0; #endif default: CPRINTF("ERR:CMD:%d\n", cmd); rsize = 0; } if (func) rsize = func(port, payload); else /* not supported : NACK it */ rsize = 0; if (rsize >= 1) payload[0] |= VDO_CMDT(CMDT_RSP_ACK); else if (!rsize) { payload[0] |= VDO_CMDT(CMDT_RSP_NAK); rsize = 1; } else { payload[0] |= VDO_CMDT(CMDT_RSP_BUSY); rsize = 1; } payload[0] |= VDO_SVDM_VERS(pd_get_vdo_ver(port)); } else if (cmd_type == CMDT_RSP_ACK) { #ifdef CONFIG_USB_PD_ALT_MODE_DFP struct svdm_amode_data *modep; modep = get_modep(port, PD_VDO_VID(payload[0])); #endif switch (cmd) { #ifdef CONFIG_USB_PD_ALT_MODE_DFP case CMD_DISCOVER_IDENT: /* Received a SOP Prime Discover Ident msg */ if (is_transmit_msg_sop_prime(port)) { /* Store cable type */ dfp_consume_cable_response(port, cnt, payload); disable_transmit_sop_prime(port); rsize = dfp_discover_svids(payload); /* Received a SOP Discover Ident Message */ } else if (IS_ENABLED(CONFIG_USB_PD_DECODE_SOP)) { dfp_consume_identity(port, cnt, payload); /* Send SOP' Discover Ident message */ if (!cable[port].is_identified) { rsize = dfp_discover_ident(payload); enable_transmit_sop_prime(port); } } else { dfp_consume_identity(port, cnt, payload); rsize = dfp_discover_svids(payload); } #ifdef CONFIG_CHARGE_MANAGER if (pd_charge_from_device(pd_get_identity_vid(port), pd_get_identity_pid(port))) charge_manager_update_dualrole(port, CAP_DEDICATED); #endif break; case CMD_DISCOVER_SVID: dfp_consume_svids(port, cnt, payload); rsize = dfp_discover_modes(port, payload); break; case CMD_DISCOVER_MODES: dfp_consume_modes(port, cnt, payload); rsize = dfp_discover_modes(port, payload); /* enter the default mode for DFP */ if (!rsize) { payload[0] = pd_dfp_enter_mode(port, 0, 0); if (payload[0]) rsize = 1; } break; case CMD_ENTER_MODE: if (!modep) { rsize = 0; } else { if (!modep->opos) pd_dfp_enter_mode(port, 0, 0); if (modep->opos) { rsize = modep->fx->status(port, payload); payload[0] |= PD_VDO_OPOS(modep->opos); } } break; case CMD_DP_STATUS: /* DP status response & UFP's DP attention have same payload */ dfp_consume_attention(port, payload); if (modep && modep->opos) rsize = modep->fx->config(port, payload); else rsize = 0; break; case CMD_DP_CONFIG: if (modep && modep->opos && modep->fx->post_config) modep->fx->post_config(port); /* no response after DFPs ack */ rsize = 0; break; case CMD_EXIT_MODE: /* no response after DFPs ack */ rsize = 0; break; #endif case CMD_ATTENTION: /* no response after DFPs ack */ rsize = 0; break; default: CPRINTF("ERR:CMD:%d\n", cmd); rsize = 0; } payload[0] |= VDO_CMDT(CMDT_INIT); payload[0] |= VDO_SVDM_VERS(pd_get_vdo_ver(port)); #ifdef CONFIG_USB_PD_ALT_MODE_DFP } else if (cmd_type == CMDT_RSP_BUSY) { switch (cmd) { case CMD_DISCOVER_IDENT: case CMD_DISCOVER_SVID: case CMD_DISCOVER_MODES: /* resend if its discovery */ rsize = 1; break; case CMD_ENTER_MODE: /* Error */ CPRINTF("ERR:ENTBUSY\n"); rsize = 0; break; case CMD_EXIT_MODE: rsize = 0; break; default: rsize = 0; } } else if (cmd_type == CMDT_RSP_NAK) { rsize = 0; /* Send SOP' Discover Ident message, if not already received. */ if (IS_ENABLED(CONFIG_USB_PD_DECODE_SOP) && !cable[port].is_identified && (cmd == CMD_DISCOVER_IDENT)) { rsize = dfp_discover_ident(payload); enable_transmit_sop_prime(port); } #endif /* CONFIG_USB_PD_ALT_MODE_DFP */ } else { CPRINTF("ERR:CMDT:%d\n", cmd); /* do not answer */ rsize = 0; } return rsize; } #else int pd_svdm(int port, int cnt, uint32_t *payload, uint32_t **rpayload) { return 0; } #endif /* CONFIG_USB_PD_ALT_MODE */ #ifdef CONFIG_CMD_USB_PD_CABLE static const char * const cable_type[] = { [IDH_PTYPE_PCABLE] = "Passive", [IDH_PTYPE_ACABLE] = "Active", }; static const char * const cable_curr[] = { [CABLE_CURRENT_3A] = "3A", [CABLE_CURRENT_5A] = "5A", }; static const char * const cable_ss_support[] = { [USB_SS_U2_ONLY] = "Not supported", [USB_SS_U31_GEN1] = "Gen 1", [USB_SS_U31_GEN2] = "Gen 1 and Gen 2", }; static const char * const vbus_max[] = { [CABLE_VBUS_20V] = "20V", [CABLE_VBUS_30V] = "30V", [CABLE_VBUS_40V] = "40V", [CABLE_VBUS_50V] = "50V", }; static const char * const conn_type[] = { [CONNECTOR_ATYPE] = "Type A", [CONNECTOR_BTYPE] = "Type B", [CONNECTOR_CTYPE] = "Type C", [CONNECTOR_CAPTIVE] = "Captive", }; static int command_cable(int argc, char **argv) { int port; char *e; if (argc < 2) return EC_ERROR_PARAM_COUNT; port = strtoi(argv[1], &e, 0); if (*e || port >= CONFIG_USB_PD_PORT_COUNT) return EC_ERROR_PARAM2; if (!cable[port].is_identified) { ccprintf("Cable not identified.\n"); return EC_SUCCESS; } ccprintf("Cable Type: "); if (cable[port].type != IDH_PTYPE_PCABLE && cable[port].type != IDH_PTYPE_ACABLE) { ccprintf("Not Emark Cable\n"); return EC_SUCCESS; } ccprintf("%s\n", cable_type[cable[port].type]); /* * For rev 2.0, rev 3.0 active and passive cables have same bits for * connector type (Bit 19:18) and current handling capability bit 6:5 */ ccprintf("Connector Type: %s\n", cable[port].attr.rev20.connector > ARRAY_SIZE(conn_type) ? "Invalid" : conn_type[cable[port].attr.rev20.connector]); if (cable[port].attr.rev20.current) { ccprintf("Cable Current: %s\n", cable[port].attr.rev20.current > ARRAY_SIZE(cable_curr) ? "Invalid" : cable_curr[cable[port].attr.rev20.current]); } else ccprintf("Cable Current: Invalid\n"); /* * For Rev 3.0 passive cables and Rev 2.0 active and passive cables, * USB Superspeed Signaling support have same bits 2:0 */ if (cable[port].type == IDH_PTYPE_PCABLE) { ccprintf("USB Superspeed Signaling support: %s\n", cable[port].attr.rev20.ss > ARRAY_SIZE(cable_ss_support) ? "Invalid" : cable_ss_support[cable[port].attr.p_rev30.ss]); } /* * For Rev 3.0 active cables and Rev 2.0 active and passive cables, * SOP" controller preset have same bit 3 */ if (cable[port].type == IDH_PTYPE_ACABLE) { ccprintf("SOP' ' Controller: %s present\n", cable[port].attr.rev20.controller ? "" : "Not"); } if (cable[port].rev == PD_REV30) { /* * For Rev 3.0 active and passive cables, Max Vbus vtg have * same bits 10:9. */ ccprintf("Max vbus voltage: %s\n", cable[port].attr.p_rev30.vbus_max > ARRAY_SIZE(vbus_max) ? "Invaild" : vbus_max[cable[port].attr.p_rev30.vbus_max]); /* For Rev 3.0 Active cables */ if (cable[port].type == IDH_PTYPE_ACABLE) { ccprintf("SS signaling: USB_SS_GEN%u\n", cable[port].attr2.a2_rev30.sss ? 2 : 1); ccprintf("Number of SS lanes supported: %u\n", cable[port].attr2.a2_rev30.lanes); } } return EC_SUCCESS; } DECLARE_CONSOLE_COMMAND(pdcable, command_cable, "", "Cable Characteristics"); #endif /* CONFIG_CMD_USB_PD_CABLE */ static void pd_usb_billboard_deferred(void) { #if defined(CONFIG_USB_PD_ALT_MODE) && !defined(CONFIG_USB_PD_ALT_MODE_DFP) \ && !defined(CONFIG_USB_PD_SIMPLE_DFP) && defined(CONFIG_USB_BOS) /* * TODO(tbroch) * 1. Will we have multiple type-C port UFPs * 2. Will there be other modes applicable to DFPs besides DP */ if (!pd_alt_mode(0, USB_SID_DISPLAYPORT)) usb_connect(); #endif } DECLARE_DEFERRED(pd_usb_billboard_deferred); #ifdef CONFIG_USB_PD_ALT_MODE_DFP static enum ec_status hc_remote_pd_discovery(struct host_cmd_handler_args *args) { const uint8_t *port = args->params; struct ec_params_usb_pd_discovery_entry *r = args->response; if (*port >= CONFIG_USB_PD_PORT_COUNT) return EC_RES_INVALID_PARAM; r->vid = pd_get_identity_vid(*port); r->ptype = PD_IDH_PTYPE(pe[*port].identity[0]); /* pid only included if vid is assigned */ if (r->vid) r->pid = PD_PRODUCT_PID(pe[*port].identity[2]); args->response_size = sizeof(*r); return EC_RES_SUCCESS; } DECLARE_HOST_COMMAND(EC_CMD_USB_PD_DISCOVERY, hc_remote_pd_discovery, EC_VER_MASK(0)); static enum ec_status hc_remote_pd_get_amode(struct host_cmd_handler_args *args) { struct svdm_amode_data *modep; const struct ec_params_usb_pd_get_mode_request *p = args->params; struct ec_params_usb_pd_get_mode_response *r = args->response; if (p->port >= CONFIG_USB_PD_PORT_COUNT) return EC_RES_INVALID_PARAM; /* no more to send */ if (p->svid_idx >= pe[p->port].svid_cnt) { r->svid = 0; args->response_size = sizeof(r->svid); return EC_RES_SUCCESS; } r->svid = pe[p->port].svids[p->svid_idx].svid; r->opos = 0; memcpy(r->vdo, pe[p->port].svids[p->svid_idx].mode_vdo, 24); modep = get_modep(p->port, r->svid); if (modep) r->opos = pd_alt_mode(p->port, r->svid); args->response_size = sizeof(*r); return EC_RES_SUCCESS; } DECLARE_HOST_COMMAND(EC_CMD_USB_PD_GET_AMODE, hc_remote_pd_get_amode, EC_VER_MASK(0)); #endif #define FW_RW_END (CONFIG_EC_WRITABLE_STORAGE_OFF + \ CONFIG_RW_STORAGE_OFF + CONFIG_RW_SIZE) uint8_t *flash_hash_rw(void) { static struct sha256_ctx ctx; /* re-calculate RW hash when changed as its time consuming */ if (rw_flash_changed) { rw_flash_changed = 0; SHA256_init(&ctx); SHA256_update(&ctx, (void *)CONFIG_PROGRAM_MEMORY_BASE + CONFIG_RW_MEM_OFF, CONFIG_RW_SIZE - RSANUMBYTES); return SHA256_final(&ctx); } else { return ctx.buf; } } void pd_get_info(uint32_t *info_data) { void *rw_hash = flash_hash_rw(); /* copy first 20 bytes of RW hash */ memcpy(info_data, rw_hash, 5 * sizeof(uint32_t)); /* copy other info into data msg */ #if defined(CONFIG_USB_PD_HW_DEV_ID_BOARD_MAJOR) && \ defined(CONFIG_USB_PD_HW_DEV_ID_BOARD_MINOR) info_data[5] = VDO_INFO(CONFIG_USB_PD_HW_DEV_ID_BOARD_MAJOR, CONFIG_USB_PD_HW_DEV_ID_BOARD_MINOR, ver_get_num_commits(system_get_image_copy()), (system_get_image_copy() != SYSTEM_IMAGE_RO)); #else info_data[5] = 0; #endif } int pd_custom_flash_vdm(int port, int cnt, uint32_t *payload) { static int flash_offset; int rsize = 1; /* default is just VDM header returned */ switch (PD_VDO_CMD(payload[0])) { case VDO_CMD_VERSION: memcpy(payload + 1, ¤t_image_data.version, 24); rsize = 7; break; case VDO_CMD_REBOOT: /* ensure the power supply is in a safe state */ pd_power_supply_reset(0); system_reset(0); break; case VDO_CMD_READ_INFO: /* copy info into response */ pd_get_info(payload + 1); rsize = 7; break; case VDO_CMD_FLASH_ERASE: /* do not kill the code under our feet */ if (system_get_image_copy() != SYSTEM_IMAGE_RO) break; pd_log_event(PD_EVENT_ACC_RW_ERASE, 0, 0, NULL); flash_offset = CONFIG_EC_WRITABLE_STORAGE_OFF + CONFIG_RW_STORAGE_OFF; flash_physical_erase(CONFIG_EC_WRITABLE_STORAGE_OFF + CONFIG_RW_STORAGE_OFF, CONFIG_RW_SIZE); rw_flash_changed = 1; break; case VDO_CMD_FLASH_WRITE: /* do not kill the code under our feet */ if ((system_get_image_copy() != SYSTEM_IMAGE_RO) || (flash_offset < CONFIG_EC_WRITABLE_STORAGE_OFF + CONFIG_RW_STORAGE_OFF)) break; flash_physical_write(flash_offset, 4*(cnt - 1), (const char *)(payload+1)); flash_offset += 4*(cnt - 1); rw_flash_changed = 1; break; case VDO_CMD_ERASE_SIG: /* this is not touching the code area */ { uint32_t zero = 0; int offset; /* zeroes the area containing the RSA signature */ for (offset = FW_RW_END - RSANUMBYTES; offset < FW_RW_END; offset += 4) flash_physical_write(offset, 4, (const char *)&zero); } break; default: /* Unknown : do not answer */ return 0; } return rsize; } #ifdef CONFIG_USB_PD_DISCHARGE void pd_set_vbus_discharge(int port, int enable) { static struct mutex discharge_lock[CONFIG_USB_PD_PORT_COUNT]; mutex_lock(&discharge_lock[port]); enable &= !board_vbus_source_enabled(port); #ifdef CONFIG_USB_PD_DISCHARGE_GPIO if (!port) gpio_set_level(GPIO_USB_C0_DISCHARGE, enable); #if CONFIG_USB_PD_PORT_COUNT > 1 else gpio_set_level(GPIO_USB_C1_DISCHARGE, enable); #endif /* CONFIG_USB_PD_PORT_COUNT */ #elif defined(CONFIG_USB_PD_DISCHARGE_TCPC) tcpc_discharge_vbus(port, enable); #elif defined(CONFIG_USB_PD_DISCHARGE_PPC) ppc_discharge_vbus(port, enable); #else #error "PD discharge implementation not defined" #endif mutex_unlock(&discharge_lock[port]); } #endif /* CONFIG_USB_PD_DISCHARGE */