| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Tomas Winkler | 1095 | 46.48% | 29 | 47.54% |
| Alexander Usyskin | 860 | 36.50% | 20 | 32.79% |
| Samuel Ortiz | 382 | 16.21% | 5 | 8.20% |
| Vitaly Lubart | 10 | 0.42% | 2 | 3.28% |
| Dan Carpenter | 4 | 0.17% | 1 | 1.64% |
| Oren Weil | 2 | 0.08% | 1 | 1.64% |
| Tamar Mashiah | 1 | 0.04% | 1 | 1.64% |
| Andy Shevchenko | 1 | 0.04% | 1 | 1.64% |
| Wolfram Sang | 1 | 0.04% | 1 | 1.64% |
| Total | 2356 | 61 |
// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2013-2023, Intel Corporation. All rights reserved. * Intel Management Engine Interface (Intel MEI) Linux driver */ #include <linux/kernel.h> #include <linux/sched.h> #include <linux/module.h> #include <linux/device.h> #include <linux/slab.h> #include <linux/mei.h> #include <linux/mei_cl_bus.h> #include "mei_dev.h" #include "client.h" #include "mkhi.h" #define MEI_UUID_NFC_INFO UUID_LE(0xd2de1625, 0x382d, 0x417d, \ 0x48, 0xa4, 0xef, 0xab, 0xba, 0x8a, 0x12, 0x06) static const uuid_le mei_nfc_info_guid = MEI_UUID_NFC_INFO; #define MEI_UUID_NFC_HCI UUID_LE(0x0bb17a78, 0x2a8e, 0x4c50, \ 0x94, 0xd4, 0x50, 0x26, 0x67, 0x23, 0x77, 0x5c) #define MEI_UUID_WD UUID_LE(0x05B79A6F, 0x4628, 0x4D7F, \ 0x89, 0x9D, 0xA9, 0x15, 0x14, 0xCB, 0x32, 0xAB) #define MEI_UUID_MKHIF_FIX UUID_LE(0x55213584, 0x9a29, 0x4916, \ 0xba, 0xdf, 0xf, 0xb7, 0xed, 0x68, 0x2a, 0xeb) #define MEI_UUID_IGSC_MKHI UUID_LE(0xE2C2AFA2, 0x3817, 0x4D19, \ 0x9D, 0x95, 0x06, 0xB1, 0x6B, 0x58, 0x8A, 0x5D) #define MEI_UUID_IGSC_MKHI_FIX UUID_LE(0x46E0C1FB, 0xA546, 0x414F, \ 0x91, 0x70, 0xB7, 0xF4, 0x6D, 0x57, 0xB4, 0xAD) #define MEI_UUID_HDCP UUID_LE(0xB638AB7E, 0x94E2, 0x4EA2, \ 0xA5, 0x52, 0xD1, 0xC5, 0x4B, 0x62, 0x7F, 0x04) #define MEI_UUID_PAVP UUID_LE(0xfbf6fcf1, 0x96cf, 0x4e2e, 0xA6, \ 0xa6, 0x1b, 0xab, 0x8c, 0xbe, 0x36, 0xb1) #define MEI_UUID_ANY NULL_UUID_LE /** * number_of_connections - determine whether an client be on the bus * according number of connections * We support only clients: * 1. with single connection * 2. and fixed clients (max_number_of_connections == 0) * * @cldev: me clients device */ static void number_of_connections(struct mei_cl_device *cldev) { if (cldev->me_cl->props.max_number_of_connections > 1) cldev->do_match = 0; } /** * blacklist - blacklist a client from the bus * * @cldev: me clients device */ static void blacklist(struct mei_cl_device *cldev) { cldev->do_match = 0; } /** * whitelist - forcefully whitelist client * * @cldev: me clients device */ static void whitelist(struct mei_cl_device *cldev) { cldev->do_match = 1; } #define OSTYPE_LINUX 2 struct mei_os_ver { __le16 build; __le16 reserved1; u8 os_type; u8 major; u8 minor; u8 reserved2; } __packed; struct mkhi_fw_ver_block { u16 minor; u8 major; u8 platform; u16 buildno; u16 hotfix; } __packed; struct mkhi_fw_ver { struct mkhi_fw_ver_block ver[MEI_MAX_FW_VER_BLOCKS]; } __packed; #define MKHI_OSVER_BUF_LEN (sizeof(struct mkhi_msg_hdr) + \ sizeof(struct mkhi_fwcaps) + \ sizeof(struct mei_os_ver)) static int mei_osver(struct mei_cl_device *cldev) { const size_t size = MKHI_OSVER_BUF_LEN; u8 buf[MKHI_OSVER_BUF_LEN]; struct mkhi_msg *req; struct mkhi_fwcaps *fwcaps; struct mei_os_ver *os_ver; unsigned int mode = MEI_CL_IO_TX_BLOCKING | MEI_CL_IO_TX_INTERNAL; memset(buf, 0, size); req = (struct mkhi_msg *)buf; req->hdr.group_id = MKHI_FWCAPS_GROUP_ID; req->hdr.command = MKHI_FWCAPS_SET_OS_VER_APP_RULE_CMD; fwcaps = (struct mkhi_fwcaps *)req->data; fwcaps->id.rule_type = 0x0; fwcaps->id.feature_id = MKHI_FEATURE_PTT; fwcaps->len = sizeof(*os_ver); os_ver = (struct mei_os_ver *)fwcaps->data; os_ver->os_type = OSTYPE_LINUX; return __mei_cl_send(cldev->cl, buf, size, 0, mode); } #define MKHI_FWVER_BUF_LEN (sizeof(struct mkhi_msg_hdr) + \ sizeof(struct mkhi_fw_ver)) #define MKHI_FWVER_LEN(__num) (sizeof(struct mkhi_msg_hdr) + \ sizeof(struct mkhi_fw_ver_block) * (__num)) static int mei_fwver(struct mei_cl_device *cldev) { u8 buf[MKHI_FWVER_BUF_LEN]; struct mkhi_msg req; struct mkhi_msg *rsp; struct mkhi_fw_ver *fwver; int bytes_recv, ret, i; memset(buf, 0, sizeof(buf)); req.hdr.group_id = MKHI_GEN_GROUP_ID; req.hdr.command = MKHI_GEN_GET_FW_VERSION_CMD; ret = __mei_cl_send(cldev->cl, (u8 *)&req, sizeof(req), 0, MEI_CL_IO_TX_BLOCKING); if (ret < 0) { dev_info(&cldev->dev, "Could not send ReqFWVersion cmd ret = %d\n", ret); return ret; } ret = 0; bytes_recv = __mei_cl_recv(cldev->cl, buf, sizeof(buf), NULL, 0, cldev->bus->timeouts.mkhi_recv); if (bytes_recv < 0 || (size_t)bytes_recv < MKHI_FWVER_LEN(1)) { /* * Should be at least one version block, * error out if nothing found */ dev_info(&cldev->dev, "Could not read FW version ret = %d\n", bytes_recv); return -EIO; } rsp = (struct mkhi_msg *)buf; fwver = (struct mkhi_fw_ver *)rsp->data; memset(cldev->bus->fw_ver, 0, sizeof(cldev->bus->fw_ver)); for (i = 0; i < MEI_MAX_FW_VER_BLOCKS; i++) { if ((size_t)bytes_recv < MKHI_FWVER_LEN(i + 1)) break; dev_dbg(&cldev->dev, "FW version%d %d:%d.%d.%d.%d\n", i, fwver->ver[i].platform, fwver->ver[i].major, fwver->ver[i].minor, fwver->ver[i].hotfix, fwver->ver[i].buildno); cldev->bus->fw_ver[i].platform = fwver->ver[i].platform; cldev->bus->fw_ver[i].major = fwver->ver[i].major; cldev->bus->fw_ver[i].minor = fwver->ver[i].minor; cldev->bus->fw_ver[i].hotfix = fwver->ver[i].hotfix; cldev->bus->fw_ver[i].buildno = fwver->ver[i].buildno; } cldev->bus->fw_ver_received = 1; return ret; } #define GFX_MEMORY_READY_TIMEOUT 200 /* timeout in milliseconds */ static int mei_gfx_memory_ready(struct mei_cl_device *cldev) { struct mkhi_gfx_mem_ready req = {0}; unsigned int mode = MEI_CL_IO_TX_INTERNAL | MEI_CL_IO_TX_BLOCKING; req.hdr.group_id = MKHI_GROUP_ID_GFX; req.hdr.command = MKHI_GFX_MEMORY_READY_CMD_REQ; req.flags = MKHI_GFX_MEM_READY_PXP_ALLOWED; dev_dbg(&cldev->dev, "Sending memory ready command\n"); return __mei_cl_send_timeout(cldev->cl, (u8 *)&req, sizeof(req), 0, mode, GFX_MEMORY_READY_TIMEOUT); } static void mei_mkhi_fix(struct mei_cl_device *cldev) { int ret; /* No need to enable the client if nothing is needed from it */ if (!cldev->bus->fw_f_fw_ver_supported && !cldev->bus->hbm_f_os_supported) return; ret = mei_cldev_enable(cldev); if (ret) return; if (cldev->bus->fw_f_fw_ver_supported) { ret = mei_fwver(cldev); if (ret < 0) dev_info(&cldev->dev, "FW version command failed %d\n", ret); } if (cldev->bus->hbm_f_os_supported) { ret = mei_osver(cldev); if (ret < 0) dev_info(&cldev->dev, "OS version command failed %d\n", ret); } mei_cldev_disable(cldev); } static void mei_gsc_mkhi_ver(struct mei_cl_device *cldev) { int ret; /* * No need to enable the client if nothing is needed from it. * No need to fill in version if it is already filled in by the fix address client. */ if (!cldev->bus->fw_f_fw_ver_supported || cldev->bus->fw_ver_received) return; ret = mei_cldev_enable(cldev); if (ret) return; ret = mei_fwver(cldev); if (ret < 0) dev_info(&cldev->dev, "FW version command failed %d\n", ret); mei_cldev_disable(cldev); } static void mei_gsc_mkhi_fix_ver(struct mei_cl_device *cldev) { int ret; /* No need to enable the client if nothing is needed from it */ if (!cldev->bus->fw_f_fw_ver_supported && cldev->bus->pxp_mode != MEI_DEV_PXP_INIT) return; ret = mei_cldev_enable(cldev); if (ret) return; if (cldev->bus->pxp_mode == MEI_DEV_PXP_INIT) { ret = mei_gfx_memory_ready(cldev); if (ret < 0) { dev_err(&cldev->dev, "memory ready command failed %d\n", ret); } else { dev_dbg(&cldev->dev, "memory ready command sent\n"); cldev->bus->pxp_mode = MEI_DEV_PXP_SETUP; } /* we go to reset after that */ goto out; } ret = mei_fwver(cldev); if (ret < 0) dev_info(&cldev->dev, "FW version command failed %d\n", ret); out: mei_cldev_disable(cldev); } /** * mei_wd - wd client on the bus, change protocol version * as the API has changed. * * @cldev: me clients device */ #if IS_ENABLED(CONFIG_INTEL_MEI_ME) #include <linux/pci.h> #include "hw-me-regs.h" static void mei_wd(struct mei_cl_device *cldev) { struct pci_dev *pdev = to_pci_dev(cldev->dev.parent); if (pdev->device == MEI_DEV_ID_WPT_LP || pdev->device == MEI_DEV_ID_SPT || pdev->device == MEI_DEV_ID_SPT_H) cldev->me_cl->props.protocol_version = 0x2; cldev->do_match = 1; } #else static inline void mei_wd(struct mei_cl_device *cldev) {} #endif /* CONFIG_INTEL_MEI_ME */ struct mei_nfc_cmd { u8 command; u8 status; u16 req_id; u32 reserved; u16 data_size; u8 sub_command; u8 data[]; } __packed; struct mei_nfc_reply { u8 command; u8 status; u16 req_id; u32 reserved; u16 data_size; u8 sub_command; u8 reply_status; u8 data[]; } __packed; struct mei_nfc_if_version { u8 radio_version_sw[3]; u8 reserved[3]; u8 radio_version_hw[3]; u8 i2c_addr; u8 fw_ivn; u8 vendor_id; u8 radio_type; } __packed; #define MEI_NFC_CMD_MAINTENANCE 0x00 #define MEI_NFC_SUBCMD_IF_VERSION 0x01 /* Vendors */ #define MEI_NFC_VENDOR_INSIDE 0x00 #define MEI_NFC_VENDOR_NXP 0x01 /* Radio types */ #define MEI_NFC_VENDOR_INSIDE_UREAD 0x00 #define MEI_NFC_VENDOR_NXP_PN544 0x01 /** * mei_nfc_if_version - get NFC interface version * * @cl: host client (nfc info) * @ver: NFC interface version to be filled in * * Return: 0 on success; < 0 otherwise */ static int mei_nfc_if_version(struct mei_cl *cl, struct mei_nfc_if_version *ver) { struct mei_device *bus; struct mei_nfc_cmd cmd = { .command = MEI_NFC_CMD_MAINTENANCE, .data_size = 1, .sub_command = MEI_NFC_SUBCMD_IF_VERSION, }; struct mei_nfc_reply *reply = NULL; size_t if_version_length; u8 vtag; int bytes_recv, ret; bus = cl->dev; WARN_ON(mutex_is_locked(&bus->device_lock)); ret = __mei_cl_send(cl, (u8 *)&cmd, sizeof(cmd), 0, MEI_CL_IO_TX_BLOCKING); if (ret < 0) { dev_err(bus->dev, "Could not send IF version cmd ret = %d\n", ret); return ret; } /* to be sure on the stack we alloc memory */ if_version_length = sizeof(*reply) + sizeof(*ver); reply = kzalloc(if_version_length, GFP_KERNEL); if (!reply) return -ENOMEM; ret = 0; bytes_recv = __mei_cl_recv(cl, (u8 *)reply, if_version_length, &vtag, 0, 0); if (bytes_recv < 0 || (size_t)bytes_recv < if_version_length) { dev_err(bus->dev, "Could not read IF version ret = %d\n", bytes_recv); ret = -EIO; goto err; } memcpy(ver, reply->data, sizeof(*ver)); dev_info(bus->dev, "NFC MEI VERSION: IVN 0x%x Vendor ID 0x%x Type 0x%x\n", ver->fw_ivn, ver->vendor_id, ver->radio_type); err: kfree(reply); return ret; } /** * mei_nfc_radio_name - derive nfc radio name from the interface version * * @ver: NFC radio version * * Return: radio name string */ static const char *mei_nfc_radio_name(struct mei_nfc_if_version *ver) { if (ver->vendor_id == MEI_NFC_VENDOR_INSIDE) { if (ver->radio_type == MEI_NFC_VENDOR_INSIDE_UREAD) return "microread"; } if (ver->vendor_id == MEI_NFC_VENDOR_NXP) { if (ver->radio_type == MEI_NFC_VENDOR_NXP_PN544) return "pn544"; } return NULL; } /** * mei_nfc - The nfc fixup function. The function retrieves nfc radio * name and set is as device attribute so we can load * the proper device driver for it * * @cldev: me client device (nfc) */ static void mei_nfc(struct mei_cl_device *cldev) { struct mei_device *bus; struct mei_cl *cl; struct mei_me_client *me_cl = NULL; struct mei_nfc_if_version ver; const char *radio_name = NULL; int ret; bus = cldev->bus; mutex_lock(&bus->device_lock); /* we need to connect to INFO GUID */ cl = mei_cl_alloc_linked(bus); if (IS_ERR(cl)) { ret = PTR_ERR(cl); cl = NULL; dev_err(bus->dev, "nfc hook alloc failed %d\n", ret); goto out; } me_cl = mei_me_cl_by_uuid(bus, &mei_nfc_info_guid); if (!me_cl) { ret = -ENOTTY; dev_err(bus->dev, "Cannot find nfc info %d\n", ret); goto out; } ret = mei_cl_connect(cl, me_cl, NULL); if (ret < 0) { dev_err(&cldev->dev, "Can't connect to the NFC INFO ME ret = %d\n", ret); goto out; } mutex_unlock(&bus->device_lock); ret = mei_nfc_if_version(cl, &ver); if (ret) goto disconnect; radio_name = mei_nfc_radio_name(&ver); if (!radio_name) { ret = -ENOENT; dev_err(&cldev->dev, "Can't get the NFC interface version ret = %d\n", ret); goto disconnect; } dev_dbg(bus->dev, "nfc radio %s\n", radio_name); strscpy(cldev->name, radio_name, sizeof(cldev->name)); disconnect: mutex_lock(&bus->device_lock); if (mei_cl_disconnect(cl) < 0) dev_err(bus->dev, "Can't disconnect the NFC INFO ME\n"); mei_cl_flush_queues(cl, NULL); out: mei_cl_unlink(cl); mutex_unlock(&bus->device_lock); mei_me_cl_put(me_cl); kfree(cl); if (ret) cldev->do_match = 0; dev_dbg(bus->dev, "end of fixup match = %d\n", cldev->do_match); } /** * vt_support - enable on bus clients with vtag support * * @cldev: me clients device */ static void vt_support(struct mei_cl_device *cldev) { if (cldev->me_cl->props.vt_supported == 1) cldev->do_match = 1; } /** * pxp_is_ready - enable bus client if pxp is ready * * @cldev: me clients device */ static void pxp_is_ready(struct mei_cl_device *cldev) { struct mei_device *bus = cldev->bus; switch (bus->pxp_mode) { case MEI_DEV_PXP_READY: case MEI_DEV_PXP_DEFAULT: cldev->do_match = 1; break; default: cldev->do_match = 0; break; } } #define MEI_FIXUP(_uuid, _hook) { _uuid, _hook } static struct mei_fixup { const uuid_le uuid; void (*hook)(struct mei_cl_device *cldev); } mei_fixups[] = { MEI_FIXUP(MEI_UUID_ANY, number_of_connections), MEI_FIXUP(MEI_UUID_NFC_INFO, blacklist), MEI_FIXUP(MEI_UUID_NFC_HCI, mei_nfc), MEI_FIXUP(MEI_UUID_WD, mei_wd), MEI_FIXUP(MEI_UUID_MKHIF_FIX, mei_mkhi_fix), MEI_FIXUP(MEI_UUID_IGSC_MKHI_FIX, mei_gsc_mkhi_fix_ver), MEI_FIXUP(MEI_UUID_IGSC_MKHI, mei_gsc_mkhi_ver), MEI_FIXUP(MEI_UUID_HDCP, whitelist), MEI_FIXUP(MEI_UUID_ANY, vt_support), MEI_FIXUP(MEI_UUID_PAVP, pxp_is_ready), }; /** * mei_cl_bus_dev_fixup - run fixup handlers * * @cldev: me client device */ void mei_cl_bus_dev_fixup(struct mei_cl_device *cldev) { struct mei_fixup *f; const uuid_le *uuid = mei_me_cl_uuid(cldev->me_cl); size_t i; for (i = 0; i < ARRAY_SIZE(mei_fixups); i++) { f = &mei_fixups[i]; if (uuid_le_cmp(f->uuid, MEI_UUID_ANY) == 0 || uuid_le_cmp(f->uuid, *uuid) == 0) f->hook(cldev); } }
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