^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (c) 2003-2020, Intel Corporation. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Intel Management Engine Interface (Intel MEI) Linux driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/wait.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/pm_runtime.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/mei.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "mei_dev.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include "hbm.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include "client.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) static const char *mei_hbm_status_str(enum mei_hbm_status status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define MEI_HBM_STATUS(status) case MEI_HBMS_##status: return #status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) switch (status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) MEI_HBM_STATUS(SUCCESS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) MEI_HBM_STATUS(CLIENT_NOT_FOUND);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) MEI_HBM_STATUS(ALREADY_EXISTS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) MEI_HBM_STATUS(REJECTED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) MEI_HBM_STATUS(INVALID_PARAMETER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) MEI_HBM_STATUS(NOT_ALLOWED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) MEI_HBM_STATUS(ALREADY_STARTED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) MEI_HBM_STATUS(NOT_STARTED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) default: return "unknown";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #undef MEI_HBM_STATUS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static const char *mei_cl_conn_status_str(enum mei_cl_connect_status status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define MEI_CL_CS(status) case MEI_CL_CONN_##status: return #status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) switch (status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) MEI_CL_CS(SUCCESS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) MEI_CL_CS(NOT_FOUND);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) MEI_CL_CS(ALREADY_STARTED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) MEI_CL_CS(OUT_OF_RESOURCES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) MEI_CL_CS(MESSAGE_SMALL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) MEI_CL_CS(NOT_ALLOWED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) default: return "unknown";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #undef MEI_CL_CCS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) const char *mei_hbm_state_str(enum mei_hbm_state state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define MEI_HBM_STATE(state) case MEI_HBM_##state: return #state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) switch (state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) MEI_HBM_STATE(IDLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) MEI_HBM_STATE(STARTING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) MEI_HBM_STATE(STARTED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) MEI_HBM_STATE(DR_SETUP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) MEI_HBM_STATE(ENUM_CLIENTS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) MEI_HBM_STATE(CLIENT_PROPERTIES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) MEI_HBM_STATE(STOPPED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return "unknown";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #undef MEI_HBM_STATE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) * mei_cl_conn_status_to_errno - convert client connect response
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * status to error code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * @status: client connect response status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * Return: corresponding error code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) static int mei_cl_conn_status_to_errno(enum mei_cl_connect_status status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) switch (status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) case MEI_CL_CONN_SUCCESS: return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) case MEI_CL_CONN_NOT_FOUND: return -ENOTTY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) case MEI_CL_CONN_ALREADY_STARTED: return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) case MEI_CL_CONN_OUT_OF_RESOURCES: return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) case MEI_CL_CONN_MESSAGE_SMALL: return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) case MEI_CL_CONN_NOT_ALLOWED: return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) default: return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * mei_hbm_write_message - wrapper for sending hbm messages.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * @dev: mei device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * @hdr: mei header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * @data: payload
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) static inline int mei_hbm_write_message(struct mei_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) struct mei_msg_hdr *hdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) const void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) return mei_write_message(dev, hdr, sizeof(*hdr), data, hdr->length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * mei_hbm_idle - set hbm to idle state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) void mei_hbm_idle(struct mei_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) dev->init_clients_timer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) dev->hbm_state = MEI_HBM_IDLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * mei_hbm_reset - reset hbm counters and book keeping data structurs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) void mei_hbm_reset(struct mei_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) mei_me_cl_rm_all(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) mei_hbm_idle(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * mei_hbm_hdr - construct hbm header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * @mei_hdr: hbm header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * @length: payload length
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) static inline void mei_hbm_hdr(struct mei_msg_hdr *mei_hdr, size_t length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) memset(mei_hdr, 0, sizeof(*mei_hdr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) mei_hdr->length = length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) mei_hdr->msg_complete = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * mei_hbm_cl_hdr - construct client hbm header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) * @cl: client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) * @hbm_cmd: host bus message command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) * @buf: buffer for cl header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) * @len: buffer length
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) static inline
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) void mei_hbm_cl_hdr(struct mei_cl *cl, u8 hbm_cmd, void *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) struct mei_hbm_cl_cmd *cmd = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) memset(cmd, 0, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) cmd->hbm_cmd = hbm_cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) cmd->host_addr = mei_cl_host_addr(cl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) cmd->me_addr = mei_cl_me_id(cl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) * mei_hbm_cl_write - write simple hbm client message
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) * @cl: client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) * @hbm_cmd: host bus message command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * @buf: message buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * @len: buffer length
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * Return: 0 on success, <0 on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) static inline int mei_hbm_cl_write(struct mei_device *dev, struct mei_cl *cl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) u8 hbm_cmd, void *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) struct mei_msg_hdr mei_hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) mei_hbm_hdr(&mei_hdr, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) mei_hbm_cl_hdr(cl, hbm_cmd, buf, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) return mei_hbm_write_message(dev, &mei_hdr, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) * mei_hbm_cl_addr_equal - check if the client's and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * the message address match
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * @cl: client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * @cmd: hbm client message
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * Return: true if addresses are the same
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) static inline
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) bool mei_hbm_cl_addr_equal(struct mei_cl *cl, struct mei_hbm_cl_cmd *cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) return mei_cl_host_addr(cl) == cmd->host_addr &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) mei_cl_me_id(cl) == cmd->me_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) * mei_hbm_cl_find_by_cmd - find recipient client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) * @buf: a buffer with hbm cl command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) * Return: the recipient client or NULL if not found
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) static inline
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) struct mei_cl *mei_hbm_cl_find_by_cmd(struct mei_device *dev, void *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) struct mei_hbm_cl_cmd *cmd = (struct mei_hbm_cl_cmd *)buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) struct mei_cl *cl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) list_for_each_entry(cl, &dev->file_list, link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) if (mei_hbm_cl_addr_equal(cl, cmd))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) return cl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) * mei_hbm_start_wait - wait for start response message.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) * Return: 0 on success and < 0 on failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) int mei_hbm_start_wait(struct mei_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) if (dev->hbm_state > MEI_HBM_STARTING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) mutex_unlock(&dev->device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) ret = wait_event_timeout(dev->wait_hbm_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) dev->hbm_state != MEI_HBM_STARTING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) mei_secs_to_jiffies(MEI_HBM_TIMEOUT));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) mutex_lock(&dev->device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) if (ret == 0 && (dev->hbm_state <= MEI_HBM_STARTING)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) dev->hbm_state = MEI_HBM_IDLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) dev_err(dev->dev, "waiting for mei start failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) return -ETIME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) * mei_hbm_start_req - sends start request message.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) * Return: 0 on success and < 0 on failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) int mei_hbm_start_req(struct mei_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) struct mei_msg_hdr mei_hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) struct hbm_host_version_request req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) mei_hbm_reset(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) mei_hbm_hdr(&mei_hdr, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) /* host start message */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) memset(&req, 0, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) req.hbm_cmd = HOST_START_REQ_CMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) req.host_version.major_version = HBM_MAJOR_VERSION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) req.host_version.minor_version = HBM_MINOR_VERSION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) dev->hbm_state = MEI_HBM_IDLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) ret = mei_hbm_write_message(dev, &mei_hdr, &req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) dev_err(dev->dev, "version message write failed: ret = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) dev->hbm_state = MEI_HBM_STARTING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) mei_schedule_stall_timer(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) * mei_hbm_dma_setup_req() - setup DMA request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) * Return: 0 on success and < 0 on failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) static int mei_hbm_dma_setup_req(struct mei_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) struct mei_msg_hdr mei_hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) struct hbm_dma_setup_request req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) mei_hbm_hdr(&mei_hdr, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) memset(&req, 0, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) req.hbm_cmd = MEI_HBM_DMA_SETUP_REQ_CMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) for (i = 0; i < DMA_DSCR_NUM; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) phys_addr_t paddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) paddr = dev->dr_dscr[i].daddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) req.dma_dscr[i].addr_hi = upper_32_bits(paddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) req.dma_dscr[i].addr_lo = lower_32_bits(paddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) req.dma_dscr[i].size = dev->dr_dscr[i].size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) mei_dma_ring_reset(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) ret = mei_hbm_write_message(dev, &mei_hdr, &req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) dev_err(dev->dev, "dma setup request write failed: ret = %d.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) dev->hbm_state = MEI_HBM_DR_SETUP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) mei_schedule_stall_timer(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) * mei_hbm_capabilities_req - request capabilities
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) * Return: 0 on success and < 0 on failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) static int mei_hbm_capabilities_req(struct mei_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) struct mei_msg_hdr mei_hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) struct hbm_capability_request req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) mei_hbm_hdr(&mei_hdr, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) memset(&req, 0, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) req.hbm_cmd = MEI_HBM_CAPABILITIES_REQ_CMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) if (dev->hbm_f_vt_supported)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) req.capability_requested[0] = HBM_CAP_VT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) ret = mei_hbm_write_message(dev, &mei_hdr, &req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) dev_err(dev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) "capabilities request write failed: ret = %d.\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) dev->hbm_state = MEI_HBM_CAP_SETUP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) mei_schedule_stall_timer(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) * mei_hbm_enum_clients_req - sends enumeration client request message.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) * Return: 0 on success and < 0 on failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) static int mei_hbm_enum_clients_req(struct mei_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) struct mei_msg_hdr mei_hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) struct hbm_host_enum_request req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) /* enumerate clients */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) mei_hbm_hdr(&mei_hdr, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) memset(&req, 0, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) req.hbm_cmd = HOST_ENUM_REQ_CMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) req.flags |= dev->hbm_f_dc_supported ? MEI_HBM_ENUM_F_ALLOW_ADD : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) req.flags |= dev->hbm_f_ie_supported ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) MEI_HBM_ENUM_F_IMMEDIATE_ENUM : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) ret = mei_hbm_write_message(dev, &mei_hdr, &req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) dev_err(dev->dev, "enumeration request write failed: ret = %d.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) dev->hbm_state = MEI_HBM_ENUM_CLIENTS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) mei_schedule_stall_timer(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) * mei_hbm_me_cl_add - add new me client to the list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) * @res: hbm property response
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) * Return: 0 on success and -ENOMEM on allocation failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) static int mei_hbm_me_cl_add(struct mei_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) struct hbm_props_response *res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) struct mei_me_client *me_cl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) const uuid_le *uuid = &res->client_properties.protocol_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) mei_me_cl_rm_by_uuid(dev, uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) me_cl = kzalloc(sizeof(*me_cl), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) if (!me_cl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) mei_me_cl_init(me_cl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) me_cl->props = res->client_properties;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) me_cl->client_id = res->me_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) me_cl->tx_flow_ctrl_creds = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) mei_me_cl_add(dev, me_cl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) * mei_hbm_add_cl_resp - send response to fw on client add request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) * @addr: me address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) * @status: response status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) * Return: 0 on success and < 0 on failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) static int mei_hbm_add_cl_resp(struct mei_device *dev, u8 addr, u8 status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) struct mei_msg_hdr mei_hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) struct hbm_add_client_response resp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) dev_dbg(dev->dev, "adding client response\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) mei_hbm_hdr(&mei_hdr, sizeof(resp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) memset(&resp, 0, sizeof(resp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) resp.hbm_cmd = MEI_HBM_ADD_CLIENT_RES_CMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) resp.me_addr = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) resp.status = status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) ret = mei_hbm_write_message(dev, &mei_hdr, &resp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) dev_err(dev->dev, "add client response write failed: ret = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) * mei_hbm_fw_add_cl_req - request from the fw to add a client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) * @req: add client request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) * Return: 0 on success and < 0 on failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) static int mei_hbm_fw_add_cl_req(struct mei_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) struct hbm_add_client_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) u8 status = MEI_HBMS_SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) BUILD_BUG_ON(sizeof(struct hbm_add_client_request) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) sizeof(struct hbm_props_response));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) ret = mei_hbm_me_cl_add(dev, (struct hbm_props_response *)req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) status = !MEI_HBMS_SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) if (dev->dev_state == MEI_DEV_ENABLED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) schedule_work(&dev->bus_rescan_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) return mei_hbm_add_cl_resp(dev, req->me_addr, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) * mei_hbm_cl_notify_req - send notification request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) * @cl: a client to disconnect from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) * @start: true for start false for stop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) * Return: 0 on success and -EIO on write failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) int mei_hbm_cl_notify_req(struct mei_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) struct mei_cl *cl, u8 start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) struct mei_msg_hdr mei_hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) struct hbm_notification_request req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) mei_hbm_hdr(&mei_hdr, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) mei_hbm_cl_hdr(cl, MEI_HBM_NOTIFY_REQ_CMD, &req, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) req.start = start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) ret = mei_hbm_write_message(dev, &mei_hdr, &req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) dev_err(dev->dev, "notify request failed: ret = %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) * notify_res_to_fop - convert notification response to the proper
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) * notification FOP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) * @cmd: client notification start response command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) * Return: MEI_FOP_NOTIFY_START or MEI_FOP_NOTIFY_STOP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) static inline enum mei_cb_file_ops notify_res_to_fop(struct mei_hbm_cl_cmd *cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) struct hbm_notification_response *rs =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) (struct hbm_notification_response *)cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) return mei_cl_notify_req2fop(rs->start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) * mei_hbm_cl_notify_start_res - update the client state according
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) * notify start response
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) * @cl: mei host client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) * @cmd: client notification start response command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) static void mei_hbm_cl_notify_start_res(struct mei_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) struct mei_cl *cl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) struct mei_hbm_cl_cmd *cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) struct hbm_notification_response *rs =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) (struct hbm_notification_response *)cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) cl_dbg(dev, cl, "hbm: notify start response status=%d\n", rs->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) if (rs->status == MEI_HBMS_SUCCESS ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) rs->status == MEI_HBMS_ALREADY_STARTED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) cl->notify_en = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) cl->status = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) cl->status = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) * mei_hbm_cl_notify_stop_res - update the client state according
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) * notify stop response
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) * @cl: mei host client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) * @cmd: client notification stop response command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) static void mei_hbm_cl_notify_stop_res(struct mei_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) struct mei_cl *cl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) struct mei_hbm_cl_cmd *cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) struct hbm_notification_response *rs =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) (struct hbm_notification_response *)cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) cl_dbg(dev, cl, "hbm: notify stop response status=%d\n", rs->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) if (rs->status == MEI_HBMS_SUCCESS ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) rs->status == MEI_HBMS_NOT_STARTED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) cl->notify_en = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) cl->status = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) /* TODO: spec is not clear yet about other possible issues */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) cl->status = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) * mei_hbm_cl_notify - signal notification event
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) * @cmd: notification client message
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) static void mei_hbm_cl_notify(struct mei_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) struct mei_hbm_cl_cmd *cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) struct mei_cl *cl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) cl = mei_hbm_cl_find_by_cmd(dev, cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) if (cl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) mei_cl_notify(cl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) * mei_hbm_prop_req - request property for a single client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) * @start_idx: client index to start search
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) * Return: 0 on success and < 0 on failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) static int mei_hbm_prop_req(struct mei_device *dev, unsigned long start_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) struct mei_msg_hdr mei_hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) struct hbm_props_request req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) unsigned long addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) addr = find_next_bit(dev->me_clients_map, MEI_CLIENTS_MAX, start_idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) /* We got all client properties */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) if (addr == MEI_CLIENTS_MAX) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) dev->hbm_state = MEI_HBM_STARTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) mei_host_client_init(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) mei_hbm_hdr(&mei_hdr, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) memset(&req, 0, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) req.hbm_cmd = HOST_CLIENT_PROPERTIES_REQ_CMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) req.me_addr = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) ret = mei_hbm_write_message(dev, &mei_hdr, &req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) dev_err(dev->dev, "properties request write failed: ret = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) mei_schedule_stall_timer(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) * mei_hbm_pg - sends pg command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) * @pg_cmd: the pg command code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) * Return: -EIO on write failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) * -EOPNOTSUPP if the operation is not supported by the protocol
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) int mei_hbm_pg(struct mei_device *dev, u8 pg_cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) struct mei_msg_hdr mei_hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) struct hbm_power_gate req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) if (!dev->hbm_f_pg_supported)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) mei_hbm_hdr(&mei_hdr, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) memset(&req, 0, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) req.hbm_cmd = pg_cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) ret = mei_hbm_write_message(dev, &mei_hdr, &req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) dev_err(dev->dev, "power gate command write failed.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) EXPORT_SYMBOL_GPL(mei_hbm_pg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) * mei_hbm_stop_req - send stop request message
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) * @dev: mei device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) * Return: -EIO on write failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) static int mei_hbm_stop_req(struct mei_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) struct mei_msg_hdr mei_hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) struct hbm_host_stop_request req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) mei_hbm_hdr(&mei_hdr, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) memset(&req, 0, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) req.hbm_cmd = HOST_STOP_REQ_CMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) req.reason = DRIVER_STOP_REQUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) return mei_hbm_write_message(dev, &mei_hdr, &req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) * mei_hbm_cl_flow_control_req - sends flow control request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) * @cl: client info
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) * Return: -EIO on write failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) struct hbm_flow_control req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) cl_dbg(dev, cl, "sending flow control\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) return mei_hbm_cl_write(dev, cl, MEI_FLOW_CONTROL_CMD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) &req, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) * mei_hbm_add_single_tx_flow_ctrl_creds - adds single buffer credentials.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) * @fctrl: flow control response bus message
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) * Return: 0 on success, < 0 otherwise
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) static int mei_hbm_add_single_tx_flow_ctrl_creds(struct mei_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) struct hbm_flow_control *fctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) struct mei_me_client *me_cl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) int rets;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) me_cl = mei_me_cl_by_id(dev, fctrl->me_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) if (!me_cl) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) dev_err(dev->dev, "no such me client %d\n", fctrl->me_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) if (WARN_ON(me_cl->props.single_recv_buf == 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) rets = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) me_cl->tx_flow_ctrl_creds++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) dev_dbg(dev->dev, "recv flow ctrl msg ME %d (single) creds = %d.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) fctrl->me_addr, me_cl->tx_flow_ctrl_creds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) rets = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) mei_me_cl_put(me_cl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) return rets;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) * mei_hbm_cl_flow_control_res - flow control response from me
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) * @fctrl: flow control response bus message
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) static void mei_hbm_cl_tx_flow_ctrl_creds_res(struct mei_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) struct hbm_flow_control *fctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) struct mei_cl *cl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) if (!fctrl->host_addr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) /* single receive buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) mei_hbm_add_single_tx_flow_ctrl_creds(dev, fctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) cl = mei_hbm_cl_find_by_cmd(dev, fctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) if (cl) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) cl->tx_flow_ctrl_creds++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) cl_dbg(dev, cl, "flow control creds = %d.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) cl->tx_flow_ctrl_creds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) * mei_hbm_cl_disconnect_req - sends disconnect message to fw.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) * @cl: a client to disconnect from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) * Return: -EIO on write failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) struct hbm_client_connect_request req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) return mei_hbm_cl_write(dev, cl, CLIENT_DISCONNECT_REQ_CMD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) &req, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) * mei_hbm_cl_disconnect_rsp - sends disconnect respose to the FW
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) * @cl: a client to disconnect from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) * Return: -EIO on write failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) int mei_hbm_cl_disconnect_rsp(struct mei_device *dev, struct mei_cl *cl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) struct hbm_client_connect_response resp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) return mei_hbm_cl_write(dev, cl, CLIENT_DISCONNECT_RES_CMD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) &resp, sizeof(resp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) * mei_hbm_cl_disconnect_res - update the client state according
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) * disconnect response
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) * @cl: mei host client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) * @cmd: disconnect client response host bus message
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) static void mei_hbm_cl_disconnect_res(struct mei_device *dev, struct mei_cl *cl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) struct mei_hbm_cl_cmd *cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) struct hbm_client_connect_response *rs =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) (struct hbm_client_connect_response *)cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) cl_dbg(dev, cl, "hbm: disconnect response status=%d\n", rs->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) if (rs->status == MEI_CL_DISCONN_SUCCESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) cl->state = MEI_FILE_DISCONNECT_REPLY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) cl->status = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) * mei_hbm_cl_connect_req - send connection request to specific me client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) * @cl: a client to connect to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) * Return: -EIO on write failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) struct hbm_client_connect_request req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) return mei_hbm_cl_write(dev, cl, CLIENT_CONNECT_REQ_CMD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) &req, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) * mei_hbm_cl_connect_res - update the client state according
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) * connection response
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) * @cl: mei host client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) * @cmd: connect client response host bus message
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) static void mei_hbm_cl_connect_res(struct mei_device *dev, struct mei_cl *cl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) struct mei_hbm_cl_cmd *cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) struct hbm_client_connect_response *rs =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) (struct hbm_client_connect_response *)cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) cl_dbg(dev, cl, "hbm: connect response status=%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) mei_cl_conn_status_str(rs->status));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) if (rs->status == MEI_CL_CONN_SUCCESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) cl->state = MEI_FILE_CONNECTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) cl->state = MEI_FILE_DISCONNECT_REPLY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) if (rs->status == MEI_CL_CONN_NOT_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) mei_me_cl_del(dev, cl->me_cl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) if (dev->dev_state == MEI_DEV_ENABLED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) schedule_work(&dev->bus_rescan_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) cl->status = mei_cl_conn_status_to_errno(rs->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) * mei_hbm_cl_res - process hbm response received on behalf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) * an client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) * @rs: hbm client message
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) * @fop_type: file operation type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) static void mei_hbm_cl_res(struct mei_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) struct mei_hbm_cl_cmd *rs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) enum mei_cb_file_ops fop_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) struct mei_cl *cl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) struct mei_cl_cb *cb, *next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) cl = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) list_for_each_entry_safe(cb, next, &dev->ctrl_rd_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) cl = cb->cl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) if (cb->fop_type != fop_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) if (mei_hbm_cl_addr_equal(cl, rs)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) list_del_init(&cb->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) if (!cl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) switch (fop_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) case MEI_FOP_CONNECT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) mei_hbm_cl_connect_res(dev, cl, rs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) case MEI_FOP_DISCONNECT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) mei_hbm_cl_disconnect_res(dev, cl, rs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) case MEI_FOP_NOTIFY_START:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) mei_hbm_cl_notify_start_res(dev, cl, rs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) case MEI_FOP_NOTIFY_STOP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) mei_hbm_cl_notify_stop_res(dev, cl, rs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) cl->timer_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) wake_up(&cl->wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) * mei_hbm_fw_disconnect_req - disconnect request initiated by ME firmware
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) * host sends disconnect response
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) * @dev: the device structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) * @disconnect_req: disconnect request bus message from the me
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) * Return: -ENOMEM on allocation failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) static int mei_hbm_fw_disconnect_req(struct mei_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) struct hbm_client_connect_request *disconnect_req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) struct mei_cl *cl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) struct mei_cl_cb *cb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) cl = mei_hbm_cl_find_by_cmd(dev, disconnect_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) if (cl) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) cl_warn(dev, cl, "fw disconnect request received\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) cl->state = MEI_FILE_DISCONNECTING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) cl->timer_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) cb = mei_cl_enqueue_ctrl_wr_cb(cl, 0, MEI_FOP_DISCONNECT_RSP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) if (!cb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) * mei_hbm_pg_enter_res - PG enter response received
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) * @dev: the device structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) * Return: 0 on success, -EPROTO on state mismatch
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) static int mei_hbm_pg_enter_res(struct mei_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) if (mei_pg_state(dev) != MEI_PG_OFF ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) dev->pg_event != MEI_PG_EVENT_WAIT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) dev_err(dev->dev, "hbm: pg entry response: state mismatch [%s, %d]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) mei_pg_state_str(mei_pg_state(dev)), dev->pg_event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) dev->pg_event = MEI_PG_EVENT_RECEIVED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) wake_up(&dev->wait_pg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) * mei_hbm_pg_resume - process with PG resume
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) * @dev: the device structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) void mei_hbm_pg_resume(struct mei_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) pm_request_resume(dev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) EXPORT_SYMBOL_GPL(mei_hbm_pg_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) * mei_hbm_pg_exit_res - PG exit response received
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) * @dev: the device structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) * Return: 0 on success, -EPROTO on state mismatch
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) static int mei_hbm_pg_exit_res(struct mei_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) if (mei_pg_state(dev) != MEI_PG_ON ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) (dev->pg_event != MEI_PG_EVENT_WAIT &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) dev->pg_event != MEI_PG_EVENT_IDLE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) dev_err(dev->dev, "hbm: pg exit response: state mismatch [%s, %d]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) mei_pg_state_str(mei_pg_state(dev)), dev->pg_event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) switch (dev->pg_event) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) case MEI_PG_EVENT_WAIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) dev->pg_event = MEI_PG_EVENT_RECEIVED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) wake_up(&dev->wait_pg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) case MEI_PG_EVENT_IDLE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) * If the driver is not waiting on this then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) * this is HW initiated exit from PG.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) * Start runtime pm resume sequence to exit from PG.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) dev->pg_event = MEI_PG_EVENT_RECEIVED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) mei_hbm_pg_resume(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) WARN(1, "hbm: pg exit response: unexpected pg event = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) dev->pg_event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) * mei_hbm_config_features - check what hbm features and commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) * are supported by the fw
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) static void mei_hbm_config_features(struct mei_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) /* Power Gating Isolation Support */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) dev->hbm_f_pg_supported = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) if (dev->version.major_version > HBM_MAJOR_VERSION_PGI)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) dev->hbm_f_pg_supported = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) if (dev->version.major_version == HBM_MAJOR_VERSION_PGI &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) dev->version.minor_version >= HBM_MINOR_VERSION_PGI)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) dev->hbm_f_pg_supported = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) dev->hbm_f_dc_supported = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) if (dev->version.major_version >= HBM_MAJOR_VERSION_DC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) dev->hbm_f_dc_supported = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) dev->hbm_f_ie_supported = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) if (dev->version.major_version >= HBM_MAJOR_VERSION_IE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) dev->hbm_f_ie_supported = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) /* disconnect on connect timeout instead of link reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) dev->hbm_f_dot_supported = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) if (dev->version.major_version >= HBM_MAJOR_VERSION_DOT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) dev->hbm_f_dot_supported = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) /* Notification Event Support */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) dev->hbm_f_ev_supported = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) if (dev->version.major_version >= HBM_MAJOR_VERSION_EV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) dev->hbm_f_ev_supported = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) /* Fixed Address Client Support */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) dev->hbm_f_fa_supported = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) if (dev->version.major_version >= HBM_MAJOR_VERSION_FA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) dev->hbm_f_fa_supported = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) /* OS ver message Support */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) dev->hbm_f_os_supported = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) if (dev->version.major_version >= HBM_MAJOR_VERSION_OS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) dev->hbm_f_os_supported = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) /* DMA Ring Support */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) dev->hbm_f_dr_supported = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) if (dev->version.major_version > HBM_MAJOR_VERSION_DR ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) (dev->version.major_version == HBM_MAJOR_VERSION_DR &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) dev->version.minor_version >= HBM_MINOR_VERSION_DR))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) dev->hbm_f_dr_supported = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) /* VTag Support */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) dev->hbm_f_vt_supported = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) if (dev->version.major_version > HBM_MAJOR_VERSION_VT ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) (dev->version.major_version == HBM_MAJOR_VERSION_VT &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) dev->version.minor_version >= HBM_MINOR_VERSION_VT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) dev->hbm_f_vt_supported = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) /* Capability message Support */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) dev->hbm_f_cap_supported = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) if (dev->version.major_version > HBM_MAJOR_VERSION_CAP ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) (dev->version.major_version == HBM_MAJOR_VERSION_CAP &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) dev->version.minor_version >= HBM_MINOR_VERSION_CAP))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) dev->hbm_f_cap_supported = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) * mei_hbm_version_is_supported - checks whether the driver can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) * support the hbm version of the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) * Return: true if driver can support hbm version of the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) bool mei_hbm_version_is_supported(struct mei_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) return (dev->version.major_version < HBM_MAJOR_VERSION) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) (dev->version.major_version == HBM_MAJOR_VERSION &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) dev->version.minor_version <= HBM_MINOR_VERSION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) * mei_hbm_dispatch - bottom half read routine after ISR to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) * handle the read bus message cmd processing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) * @dev: the device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) * @hdr: header of bus message
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) * Return: 0 on success and < 0 on failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) struct mei_bus_message *mei_msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) struct hbm_host_version_response *version_res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) struct hbm_props_response *props_res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) struct hbm_host_enum_response *enum_res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) struct hbm_dma_setup_response *dma_setup_res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) struct hbm_add_client_request *add_cl_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) struct hbm_capability_response *capability_res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) struct mei_hbm_cl_cmd *cl_cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) struct hbm_client_connect_request *disconnect_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) struct hbm_flow_control *fctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) /* read the message to our buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) BUG_ON(hdr->length >= sizeof(dev->rd_msg_buf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) mei_read_slots(dev, dev->rd_msg_buf, hdr->length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) mei_msg = (struct mei_bus_message *)dev->rd_msg_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) cl_cmd = (struct mei_hbm_cl_cmd *)mei_msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) /* ignore spurious message and prevent reset nesting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) * hbm is put to idle during system reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) if (dev->hbm_state == MEI_HBM_IDLE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) dev_dbg(dev->dev, "hbm: state is idle ignore spurious messages\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) switch (mei_msg->hbm_cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) case HOST_START_RES_CMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) dev_dbg(dev->dev, "hbm: start: response message received.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) dev->init_clients_timer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) version_res = (struct hbm_host_version_response *)mei_msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) dev_dbg(dev->dev, "HBM VERSION: DRIVER=%02d:%02d DEVICE=%02d:%02d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) HBM_MAJOR_VERSION, HBM_MINOR_VERSION,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) version_res->me_max_version.major_version,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) version_res->me_max_version.minor_version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) if (version_res->host_version_supported) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) dev->version.major_version = HBM_MAJOR_VERSION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) dev->version.minor_version = HBM_MINOR_VERSION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) dev->version.major_version =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) version_res->me_max_version.major_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) dev->version.minor_version =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) version_res->me_max_version.minor_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) if (!mei_hbm_version_is_supported(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) dev_warn(dev->dev, "hbm: start: version mismatch - stopping the driver.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) dev->hbm_state = MEI_HBM_STOPPED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) if (mei_hbm_stop_req(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) dev_err(dev->dev, "hbm: start: failed to send stop request\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) mei_hbm_config_features(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) if (dev->dev_state != MEI_DEV_INIT_CLIENTS ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) dev->hbm_state != MEI_HBM_STARTING) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) dev_err(dev->dev, "hbm: start: state mismatch, [%d, %d]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) dev->dev_state, dev->hbm_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) if (dev->hbm_f_cap_supported) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) if (mei_hbm_capabilities_req(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) wake_up(&dev->wait_hbm_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) if (dev->hbm_f_dr_supported) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) if (mei_dmam_ring_alloc(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) dev_info(dev->dev, "running w/o dma ring\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) if (mei_dma_ring_is_allocated(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) if (mei_hbm_dma_setup_req(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) wake_up(&dev->wait_hbm_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) dev->hbm_f_dr_supported = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) mei_dmam_ring_free(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) if (mei_hbm_enum_clients_req(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) wake_up(&dev->wait_hbm_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) case MEI_HBM_CAPABILITIES_RES_CMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) dev_dbg(dev->dev, "hbm: capabilities response: message received.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) dev->init_clients_timer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) if (dev->hbm_state != MEI_HBM_CAP_SETUP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) dev_err(dev->dev, "hbm: capabilities response: state mismatch, [%d, %d]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) dev->dev_state, dev->hbm_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) capability_res = (struct hbm_capability_response *)mei_msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) if (!(capability_res->capability_granted[0] & HBM_CAP_VT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) dev->hbm_f_vt_supported = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) if (dev->hbm_f_dr_supported) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) if (mei_dmam_ring_alloc(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) dev_info(dev->dev, "running w/o dma ring\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) if (mei_dma_ring_is_allocated(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) if (mei_hbm_dma_setup_req(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) dev->hbm_f_dr_supported = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) mei_dmam_ring_free(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) if (mei_hbm_enum_clients_req(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) case MEI_HBM_DMA_SETUP_RES_CMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) dev_dbg(dev->dev, "hbm: dma setup response: message received.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) dev->init_clients_timer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) if (dev->hbm_state != MEI_HBM_DR_SETUP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) dev_err(dev->dev, "hbm: dma setup response: state mismatch, [%d, %d]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) dev->dev_state, dev->hbm_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) dma_setup_res = (struct hbm_dma_setup_response *)mei_msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) if (dma_setup_res->status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) u8 status = dma_setup_res->status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) if (status == MEI_HBMS_NOT_ALLOWED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) dev_dbg(dev->dev, "hbm: dma setup not allowed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) dev_info(dev->dev, "hbm: dma setup response: failure = %d %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) mei_hbm_status_str(status));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) dev->hbm_f_dr_supported = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) mei_dmam_ring_free(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) if (mei_hbm_enum_clients_req(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) case CLIENT_CONNECT_RES_CMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) dev_dbg(dev->dev, "hbm: client connect response: message received.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) mei_hbm_cl_res(dev, cl_cmd, MEI_FOP_CONNECT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) case CLIENT_DISCONNECT_RES_CMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) dev_dbg(dev->dev, "hbm: client disconnect response: message received.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) mei_hbm_cl_res(dev, cl_cmd, MEI_FOP_DISCONNECT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) case MEI_FLOW_CONTROL_CMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) dev_dbg(dev->dev, "hbm: client flow control response: message received.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) fctrl = (struct hbm_flow_control *)mei_msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) mei_hbm_cl_tx_flow_ctrl_creds_res(dev, fctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) case MEI_PG_ISOLATION_ENTRY_RES_CMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) dev_dbg(dev->dev, "hbm: power gate isolation entry response received\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) ret = mei_hbm_pg_enter_res(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) case MEI_PG_ISOLATION_EXIT_REQ_CMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) dev_dbg(dev->dev, "hbm: power gate isolation exit request received\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) ret = mei_hbm_pg_exit_res(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) case HOST_CLIENT_PROPERTIES_RES_CMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) dev_dbg(dev->dev, "hbm: properties response: message received.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) dev->init_clients_timer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) if (dev->dev_state != MEI_DEV_INIT_CLIENTS ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) dev->hbm_state != MEI_HBM_CLIENT_PROPERTIES) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) dev_err(dev->dev, "hbm: properties response: state mismatch, [%d, %d]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) dev->dev_state, dev->hbm_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) props_res = (struct hbm_props_response *)mei_msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) if (props_res->status == MEI_HBMS_CLIENT_NOT_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) dev_dbg(dev->dev, "hbm: properties response: %d CLIENT_NOT_FOUND\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) props_res->me_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) } else if (props_res->status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) dev_err(dev->dev, "hbm: properties response: wrong status = %d %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) props_res->status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) mei_hbm_status_str(props_res->status));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) mei_hbm_me_cl_add(dev, props_res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) /* request property for the next client */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) if (mei_hbm_prop_req(dev, props_res->me_addr + 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) case HOST_ENUM_RES_CMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) dev_dbg(dev->dev, "hbm: enumeration response: message received\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) dev->init_clients_timer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) enum_res = (struct hbm_host_enum_response *) mei_msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) BUILD_BUG_ON(sizeof(dev->me_clients_map)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) < sizeof(enum_res->valid_addresses));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) memcpy(dev->me_clients_map, enum_res->valid_addresses,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) sizeof(enum_res->valid_addresses));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) if (dev->dev_state != MEI_DEV_INIT_CLIENTS ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) dev->hbm_state != MEI_HBM_ENUM_CLIENTS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) dev_err(dev->dev, "hbm: enumeration response: state mismatch, [%d, %d]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) dev->dev_state, dev->hbm_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) dev->hbm_state = MEI_HBM_CLIENT_PROPERTIES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) /* first property request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) if (mei_hbm_prop_req(dev, 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) case HOST_STOP_RES_CMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) dev_dbg(dev->dev, "hbm: stop response: message received\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) dev->init_clients_timer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) if (dev->hbm_state != MEI_HBM_STOPPED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) dev_err(dev->dev, "hbm: stop response: state mismatch, [%d, %d]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) dev->dev_state, dev->hbm_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) mei_set_devstate(dev, MEI_DEV_POWER_DOWN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) dev_info(dev->dev, "hbm: stop response: resetting.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) /* force the reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) case CLIENT_DISCONNECT_REQ_CMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) dev_dbg(dev->dev, "hbm: disconnect request: message received\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) disconnect_req = (struct hbm_client_connect_request *)mei_msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) mei_hbm_fw_disconnect_req(dev, disconnect_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) case ME_STOP_REQ_CMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) dev_dbg(dev->dev, "hbm: stop request: message received\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) dev->hbm_state = MEI_HBM_STOPPED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) if (mei_hbm_stop_req(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) dev_err(dev->dev, "hbm: stop request: failed to send stop request\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) case MEI_HBM_ADD_CLIENT_REQ_CMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) dev_dbg(dev->dev, "hbm: add client request received\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) * after the host receives the enum_resp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) * message clients may be added or removed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) if (dev->hbm_state <= MEI_HBM_ENUM_CLIENTS ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) dev->hbm_state >= MEI_HBM_STOPPED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) dev_err(dev->dev, "hbm: add client: state mismatch, [%d, %d]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) dev->dev_state, dev->hbm_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) add_cl_req = (struct hbm_add_client_request *)mei_msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) ret = mei_hbm_fw_add_cl_req(dev, add_cl_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) dev_err(dev->dev, "hbm: add client: failed to send response %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) dev_dbg(dev->dev, "hbm: add client request processed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) case MEI_HBM_NOTIFY_RES_CMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) dev_dbg(dev->dev, "hbm: notify response received\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) mei_hbm_cl_res(dev, cl_cmd, notify_res_to_fop(cl_cmd));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) case MEI_HBM_NOTIFICATION_CMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) dev_dbg(dev->dev, "hbm: notification\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) mei_hbm_cl_notify(dev, cl_cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) WARN(1, "hbm: wrong command %d\n", mei_msg->hbm_cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
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