diff options
Diffstat (limited to 'drivers/misc/mei')
| -rw-r--r-- | drivers/misc/mei/bus-fixup.c | 9 | ||||
| -rw-r--r-- | drivers/misc/mei/bus.c | 42 | ||||
| -rw-r--r-- | drivers/misc/mei/client.h | 36 | ||||
| -rw-r--r-- | drivers/misc/mei/hdcp/mei_hdcp.c | 45 | ||||
| -rw-r--r-- | drivers/misc/mei/hdcp/mei_hdcp.h | 17 | ||||
| -rw-r--r-- | drivers/misc/mei/hw-me-regs.h | 4 | ||||
| -rw-r--r-- | drivers/misc/mei/hw-me.c | 74 | ||||
| -rw-r--r-- | drivers/misc/mei/hw-me.h | 12 | ||||
| -rw-r--r-- | drivers/misc/mei/hw-txe.c | 10 | ||||
| -rw-r--r-- | drivers/misc/mei/init.c | 6 | ||||
| -rw-r--r-- | drivers/misc/mei/main.c | 46 | ||||
| -rw-r--r-- | drivers/misc/mei/mei_dev.h | 18 | ||||
| -rw-r--r-- | drivers/misc/mei/pci-me.c | 16 |
13 files changed, 234 insertions, 101 deletions
diff --git a/drivers/misc/mei/bus-fixup.c b/drivers/misc/mei/bus-fixup.c index 0a2b99e1af45..9ad9c01ddf41 100644 --- a/drivers/misc/mei/bus-fixup.c +++ b/drivers/misc/mei/bus-fixup.c @@ -46,8 +46,6 @@ static const uuid_le mei_nfc_info_guid = MEI_UUID_NFC_INFO; */ static void number_of_connections(struct mei_cl_device *cldev) { - dev_dbg(&cldev->dev, "running hook %s\n", __func__); - if (cldev->me_cl->props.max_number_of_connections > 1) cldev->do_match = 0; } @@ -59,8 +57,6 @@ static void number_of_connections(struct mei_cl_device *cldev) */ static void blacklist(struct mei_cl_device *cldev) { - dev_dbg(&cldev->dev, "running hook %s\n", __func__); - cldev->do_match = 0; } @@ -71,8 +67,6 @@ static void blacklist(struct mei_cl_device *cldev) */ static void whitelist(struct mei_cl_device *cldev) { - dev_dbg(&cldev->dev, "running hook %s\n", __func__); - cldev->do_match = 1; } @@ -256,7 +250,6 @@ static void mei_wd(struct mei_cl_device *cldev) { struct pci_dev *pdev = to_pci_dev(cldev->dev.parent); - dev_dbg(&cldev->dev, "running hook %s\n", __func__); if (pdev->device == MEI_DEV_ID_WPT_LP || pdev->device == MEI_DEV_ID_SPT || pdev->device == MEI_DEV_ID_SPT_H) @@ -410,8 +403,6 @@ static void mei_nfc(struct mei_cl_device *cldev) bus = cldev->bus; - dev_dbg(&cldev->dev, "running hook %s\n", __func__); - mutex_lock(&bus->device_lock); /* we need to connect to INFO GUID */ cl = mei_cl_alloc_linked(bus); diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c index 985bd4fd3328..a0a495c95e3c 100644 --- a/drivers/misc/mei/bus.c +++ b/drivers/misc/mei/bus.c @@ -791,11 +791,44 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *a, } static DEVICE_ATTR_RO(modalias); +static ssize_t max_conn_show(struct device *dev, struct device_attribute *a, + char *buf) +{ + struct mei_cl_device *cldev = to_mei_cl_device(dev); + u8 maxconn = mei_me_cl_max_conn(cldev->me_cl); + + return scnprintf(buf, PAGE_SIZE, "%d", maxconn); +} +static DEVICE_ATTR_RO(max_conn); + +static ssize_t fixed_show(struct device *dev, struct device_attribute *a, + char *buf) +{ + struct mei_cl_device *cldev = to_mei_cl_device(dev); + u8 fixed = mei_me_cl_fixed(cldev->me_cl); + + return scnprintf(buf, PAGE_SIZE, "%d", fixed); +} +static DEVICE_ATTR_RO(fixed); + +static ssize_t max_len_show(struct device *dev, struct device_attribute *a, + char *buf) +{ + struct mei_cl_device *cldev = to_mei_cl_device(dev); + u32 maxlen = mei_me_cl_max_len(cldev->me_cl); + + return scnprintf(buf, PAGE_SIZE, "%u", maxlen); +} +static DEVICE_ATTR_RO(max_len); + static struct attribute *mei_cldev_attrs[] = { &dev_attr_name.attr, &dev_attr_uuid.attr, &dev_attr_version.attr, &dev_attr_modalias.attr, + &dev_attr_max_conn.attr, + &dev_attr_fixed.attr, + &dev_attr_max_len.attr, NULL, }; ATTRIBUTE_GROUPS(mei_cldev); @@ -873,15 +906,16 @@ static const struct device_type mei_cl_device_type = { /** * mei_cl_bus_set_name - set device name for me client device + * <controller>-<client device> + * Example: 0000:00:16.0-55213584-9a29-4916-badf-0fb7ed682aeb * * @cldev: me client device */ static inline void mei_cl_bus_set_name(struct mei_cl_device *cldev) { - dev_set_name(&cldev->dev, "mei:%s:%pUl:%02X", - cldev->name, - mei_me_cl_uuid(cldev->me_cl), - mei_me_cl_ver(cldev->me_cl)); + dev_set_name(&cldev->dev, "%s-%pUl", + dev_name(cldev->bus->dev), + mei_me_cl_uuid(cldev->me_cl)); } /** diff --git a/drivers/misc/mei/client.h b/drivers/misc/mei/client.h index c1f9e810cf81..2f8954def591 100644 --- a/drivers/misc/mei/client.h +++ b/drivers/misc/mei/client.h @@ -69,6 +69,42 @@ static inline u8 mei_me_cl_ver(const struct mei_me_client *me_cl) return me_cl->props.protocol_version; } +/** + * mei_me_cl_max_conn - return me client max number of connections + * + * @me_cl: me client + * + * Return: me client max number of connections + */ +static inline u8 mei_me_cl_max_conn(const struct mei_me_client *me_cl) +{ + return me_cl->props.max_number_of_connections; +} + +/** + * mei_me_cl_fixed - return me client fixed address, if any + * + * @me_cl: me client + * + * Return: me client fixed address + */ +static inline u8 mei_me_cl_fixed(const struct mei_me_client *me_cl) +{ + return me_cl->props.fixed_address; +} + +/** + * mei_me_cl_max_len - return me client max msg length + * + * @me_cl: me client + * + * Return: me client max msg length + */ +static inline u32 mei_me_cl_max_len(const struct mei_me_client *me_cl) +{ + return me_cl->props.max_msg_length; +} + /* * MEI IO Functions */ diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c b/drivers/misc/mei/hdcp/mei_hdcp.c index c681f6fab342..93027fd96c71 100644 --- a/drivers/misc/mei/hdcp/mei_hdcp.c +++ b/drivers/misc/mei/hdcp/mei_hdcp.c @@ -27,18 +27,6 @@ #include "mei_hdcp.h" -static inline u8 mei_get_ddi_index(enum port port) -{ - switch (port) { - case PORT_A: - return MEI_DDI_A; - case PORT_B ... PORT_F: - return (u8)port; - default: - return MEI_DDI_INVALID_PORT; - } -} - /** * mei_hdcp_initiate_session() - Initiate a Wired HDCP2.2 Tx Session in ME FW * @dev: device corresponding to the mei_cl_device @@ -69,7 +57,8 @@ mei_hdcp_initiate_session(struct device *dev, struct hdcp_port_data *data, WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_IN; session_init_in.port.integrated_port_type = data->port_type; - session_init_in.port.physical_port = mei_get_ddi_index(data->port); + session_init_in.port.physical_port = (u8)data->fw_ddi; + session_init_in.port.attached_transcoder = (u8)data->fw_tc; session_init_in.protocol = data->protocol; byte = mei_cldev_send(cldev, (u8 *)&session_init_in, @@ -138,7 +127,8 @@ mei_hdcp_verify_receiver_cert_prepare_km(struct device *dev, WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_IN; verify_rxcert_in.port.integrated_port_type = data->port_type; - verify_rxcert_in.port.physical_port = mei_get_ddi_index(data->port); + verify_rxcert_in.port.physical_port = (u8)data->fw_ddi; + verify_rxcert_in.port.attached_transcoder = (u8)data->fw_tc; verify_rxcert_in.cert_rx = rx_cert->cert_rx; memcpy(verify_rxcert_in.r_rx, &rx_cert->r_rx, HDCP_2_2_RRX_LEN); @@ -208,7 +198,8 @@ mei_hdcp_verify_hprime(struct device *dev, struct hdcp_port_data *data, send_hprime_in.header.buffer_len = WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_IN; send_hprime_in.port.integrated_port_type = data->port_type; - send_hprime_in.port.physical_port = mei_get_ddi_index(data->port); + send_hprime_in.port.physical_port = (u8)data->fw_ddi; + send_hprime_in.port.attached_transcoder = (u8)data->fw_tc; memcpy(send_hprime_in.h_prime, rx_hprime->h_prime, HDCP_2_2_H_PRIME_LEN); @@ -265,7 +256,8 @@ mei_hdcp_store_pairing_info(struct device *dev, struct hdcp_port_data *data, WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_IN; pairing_info_in.port.integrated_port_type = data->port_type; - pairing_info_in.port.physical_port = mei_get_ddi_index(data->port); + pairing_info_in.port.physical_port = (u8)data->fw_ddi; + pairing_info_in.port.attached_transcoder = (u8)data->fw_tc; memcpy(pairing_info_in.e_kh_km, pairing_info->e_kh_km, HDCP_2_2_E_KH_KM_LEN); @@ -323,7 +315,8 @@ mei_hdcp_initiate_locality_check(struct device *dev, lc_init_in.header.buffer_len = WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_IN; lc_init_in.port.integrated_port_type = data->port_type; - lc_init_in.port.physical_port = mei_get_ddi_index(data->port); + lc_init_in.port.physical_port = (u8)data->fw_ddi; + lc_init_in.port.attached_transcoder = (u8)data->fw_tc; byte = mei_cldev_send(cldev, (u8 *)&lc_init_in, sizeof(lc_init_in)); if (byte < 0) { @@ -378,7 +371,8 @@ mei_hdcp_verify_lprime(struct device *dev, struct hdcp_port_data *data, WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_IN; verify_lprime_in.port.integrated_port_type = data->port_type; - verify_lprime_in.port.physical_port = mei_get_ddi_index(data->port); + verify_lprime_in.port.physical_port = (u8)data->fw_ddi; + verify_lprime_in.port.attached_transcoder = (u8)data->fw_tc; memcpy(verify_lprime_in.l_prime, rx_lprime->l_prime, HDCP_2_2_L_PRIME_LEN); @@ -435,7 +429,8 @@ static int mei_hdcp_get_session_key(struct device *dev, get_skey_in.header.buffer_len = WIRED_CMD_BUF_LEN_GET_SESSION_KEY_IN; get_skey_in.port.integrated_port_type = data->port_type; - get_skey_in.port.physical_port = mei_get_ddi_index(data->port); + get_skey_in.port.physical_port = (u8)data->fw_ddi; + get_skey_in.port.attached_transcoder = (u8)data->fw_tc; byte = mei_cldev_send(cldev, (u8 *)&get_skey_in, sizeof(get_skey_in)); if (byte < 0) { @@ -499,7 +494,8 @@ mei_hdcp_repeater_check_flow_prepare_ack(struct device *dev, WIRED_CMD_BUF_LEN_VERIFY_REPEATER_IN; verify_repeater_in.port.integrated_port_type = data->port_type; - verify_repeater_in.port.physical_port = mei_get_ddi_index(data->port); + verify_repeater_in.port.physical_port = (u8)data->fw_ddi; + verify_repeater_in.port.attached_transcoder = (u8)data->fw_tc; memcpy(verify_repeater_in.rx_info, rep_topology->rx_info, HDCP_2_2_RXINFO_LEN); @@ -569,7 +565,8 @@ static int mei_hdcp_verify_mprime(struct device *dev, WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_MIN_IN; verify_mprime_in.port.integrated_port_type = data->port_type; - verify_mprime_in.port.physical_port = mei_get_ddi_index(data->port); + verify_mprime_in.port.physical_port = (u8)data->fw_ddi; + verify_mprime_in.port.attached_transcoder = (u8)data->fw_tc; memcpy(verify_mprime_in.m_prime, stream_ready->m_prime, HDCP_2_2_MPRIME_LEN); @@ -630,7 +627,8 @@ static int mei_hdcp_enable_authentication(struct device *dev, enable_auth_in.header.buffer_len = WIRED_CMD_BUF_LEN_ENABLE_AUTH_IN; enable_auth_in.port.integrated_port_type = data->port_type; - enable_auth_in.port.physical_port = mei_get_ddi_index(data->port); + enable_auth_in.port.physical_port = (u8)data->fw_ddi; + enable_auth_in.port.attached_transcoder = (u8)data->fw_tc; enable_auth_in.stream_type = data->streams[0].stream_type; byte = mei_cldev_send(cldev, (u8 *)&enable_auth_in, @@ -684,7 +682,8 @@ mei_hdcp_close_session(struct device *dev, struct hdcp_port_data *data) WIRED_CMD_BUF_LEN_CLOSE_SESSION_IN; session_close_in.port.integrated_port_type = data->port_type; - session_close_in.port.physical_port = mei_get_ddi_index(data->port); + session_close_in.port.physical_port = (u8)data->fw_ddi; + session_close_in.port.attached_transcoder = (u8)data->fw_tc; byte = mei_cldev_send(cldev, (u8 *)&session_close_in, sizeof(session_close_in)); diff --git a/drivers/misc/mei/hdcp/mei_hdcp.h b/drivers/misc/mei/hdcp/mei_hdcp.h index e4b1cd54c853..18ffc773fa18 100644 --- a/drivers/misc/mei/hdcp/mei_hdcp.h +++ b/drivers/misc/mei/hdcp/mei_hdcp.h @@ -184,8 +184,11 @@ struct hdcp_cmd_no_data { /* Uniquely identifies the hdcp port being addressed for a given command. */ struct hdcp_port_id { u8 integrated_port_type; + /* physical_port is used until Gen11.5. Must be zero for Gen11.5+ */ u8 physical_port; - u16 reserved; + /* attached_transcoder is for Gen11.5+. Set to zero for <Gen11.5 */ + u8 attached_transcoder; + u8 reserved; } __packed; /* @@ -362,16 +365,4 @@ struct wired_cmd_repeater_auth_stream_req_out { struct hdcp_cmd_header header; struct hdcp_port_id port; } __packed; - -enum mei_fw_ddi { - MEI_DDI_INVALID_PORT = 0x0, - - MEI_DDI_B = 1, - MEI_DDI_C, - MEI_DDI_D, - MEI_DDI_E, - MEI_DDI_F, - MEI_DDI_A = 7, - MEI_DDI_RANGE_END = MEI_DDI_A, -}; #endif /* __MEI_HDCP_H__ */ diff --git a/drivers/misc/mei/hw-me-regs.h b/drivers/misc/mei/hw-me-regs.h index c09f8bb49495..7cd67fb2365d 100644 --- a/drivers/misc/mei/hw-me-regs.h +++ b/drivers/misc/mei/hw-me-regs.h @@ -81,6 +81,7 @@ #define MEI_DEV_ID_CMP_LP 0x02e0 /* Comet Point LP */ #define MEI_DEV_ID_CMP_LP_3 0x02e4 /* Comet Point LP 3 (iTouch) */ +#define MEI_DEV_ID_CMP_V 0xA3BA /* Comet Point Lake V */ #define MEI_DEV_ID_ICP_LP 0x34E0 /* Ice Lake Point LP */ @@ -162,7 +163,8 @@ access to ME_CBD */ #define ME_IS_HRA 0x00000002 /* ME Interrupt Enable HRA - host read only access to ME_IE */ #define ME_IE_HRA 0x00000001 - +/* TRC control shadow register */ +#define ME_TRC 0x00000030 /* H_HPG_CSR register bits */ #define H_HPG_CSR_PGIHEXR 0x00000001 diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index c4f6991d3028..668418d7ea77 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* - * Copyright (c) 2003-2018, Intel Corporation. All rights reserved. + * Copyright (c) 2003-2019, Intel Corporation. All rights reserved. * Intel Management Engine Interface (Intel MEI) Linux driver */ @@ -173,6 +173,27 @@ static inline void mei_me_d0i3c_write(struct mei_device *dev, u32 reg) } /** + * mei_me_trc_status - read trc status register + * + * @dev: mei device + * @trc: trc status register value + * + * Return: 0 on success, error otherwise + */ +static int mei_me_trc_status(struct mei_device *dev, u32 *trc) +{ + struct mei_me_hw *hw = to_me_hw(dev); + + if (!hw->cfg->hw_trc_supported) + return -EOPNOTSUPP; + + *trc = mei_me_reg_read(hw, ME_TRC); + trace_mei_reg_read(dev->dev, "ME_TRC", ME_TRC, *trc); + + return 0; +} + +/** * mei_me_fw_status - read fw status register from pci config space * * @dev: mei device @@ -183,20 +204,19 @@ static inline void mei_me_d0i3c_write(struct mei_device *dev, u32 reg) static int mei_me_fw_status(struct mei_device *dev, struct mei_fw_status *fw_status) { - struct pci_dev *pdev = to_pci_dev(dev->dev); struct mei_me_hw *hw = to_me_hw(dev); const struct mei_fw_status *fw_src = &hw->cfg->fw_status; int ret; int i; - if (!fw_status) + if (!fw_status || !hw->read_fws) return -EINVAL; fw_status->count = fw_src->count; for (i = 0; i < fw_src->count && i < MEI_FW_STATUS_MAX; i++) { - ret = pci_read_config_dword(pdev, fw_src->status[i], - &fw_status->status[i]); - trace_mei_pci_cfg_read(dev->dev, "PCI_CFG_HSF_X", + ret = hw->read_fws(dev, fw_src->status[i], + &fw_status->status[i]); + trace_mei_pci_cfg_read(dev->dev, "PCI_CFG_HFS_X", fw_src->status[i], fw_status->status[i]); if (ret) @@ -210,19 +230,26 @@ static int mei_me_fw_status(struct mei_device *dev, * mei_me_hw_config - configure hw dependent settings * * @dev: mei device + * + * Return: + * * -EINVAL when read_fws is not set + * * 0 on success + * */ -static void mei_me_hw_config(struct mei_device *dev) +static int mei_me_hw_config(struct mei_device *dev) { - struct pci_dev *pdev = to_pci_dev(dev->dev); struct mei_me_hw *hw = to_me_hw(dev); u32 hcsr, reg; + if (WARN_ON(!hw->read_fws)) + return -EINVAL; + /* Doesn't change in runtime */ hcsr = mei_hcsr_read(dev); hw->hbuf_depth = (hcsr & H_CBD) >> 24; reg = 0; - pci_read_config_dword(pdev, PCI_CFG_HFS_1, ®); + hw->read_fws(dev, PCI_CFG_HFS_1, ®); trace_mei_pci_cfg_read(dev->dev, "PCI_CFG_HFS_1", PCI_CFG_HFS_1, reg); hw->d0i3_supported = ((reg & PCI_CFG_HFS_1_D0I3_MSK) == PCI_CFG_HFS_1_D0I3_MSK); @@ -233,6 +260,8 @@ static void mei_me_hw_config(struct mei_device *dev) if (reg & H_D0I3C_I3) hw->pg_state = MEI_PG_ON; } + + return 0; } /** @@ -269,7 +298,7 @@ static inline void me_intr_disable(struct mei_device *dev, u32 hcsr) } /** - * mei_me_intr_clear - clear and stop interrupts + * me_intr_clear - clear and stop interrupts * * @dev: the device structure * @hcsr: supplied hcsr register value @@ -323,9 +352,9 @@ static void mei_me_intr_disable(struct mei_device *dev) */ static void mei_me_synchronize_irq(struct mei_device *dev) { - struct pci_dev *pdev = to_pci_dev(dev->dev); + struct mei_me_hw *hw = to_me_hw(dev); - synchronize_irq(pdev->irq); + synchronize_irq(hw->irq); } /** @@ -1294,6 +1323,7 @@ end: static const struct mei_hw_ops mei_me_hw_ops = { + .trc_status = mei_me_trc_status, .fw_status = mei_me_fw_status, .pg_state = mei_me_pg_state, @@ -1384,6 +1414,9 @@ static bool mei_me_fw_type_sps(struct pci_dev *pdev) .dma_size[DMA_DSCR_DEVICE] = SZ_128K, \ .dma_size[DMA_DSCR_CTRL] = PAGE_SIZE +#define MEI_CFG_TRC \ + .hw_trc_supported = 1 + /* ICH Legacy devices */ static const struct mei_cfg mei_me_ich_cfg = { MEI_CFG_ICH_HFS, @@ -1432,6 +1465,14 @@ static const struct mei_cfg mei_me_pch12_cfg = { MEI_CFG_DMA_128, }; +/* Tiger Lake and newer devices */ +static const struct mei_cfg mei_me_pch15_cfg = { + MEI_CFG_PCH8_HFS, + MEI_CFG_FW_VER_SUPP, + MEI_CFG_DMA_128, + MEI_CFG_TRC, +}; + /* * mei_cfg_list - A list of platform platform specific configurations. * Note: has to be synchronized with enum mei_cfg_idx. @@ -1446,6 +1487,7 @@ static const struct mei_cfg *const mei_cfg_list[] = { [MEI_ME_PCH8_CFG] = &mei_me_pch8_cfg, [MEI_ME_PCH8_SPS_CFG] = &mei_me_pch8_sps_cfg, [MEI_ME_PCH12_CFG] = &mei_me_pch12_cfg, + [MEI_ME_PCH15_CFG] = &mei_me_pch15_cfg, }; const struct mei_cfg *mei_me_get_cfg(kernel_ulong_t idx) @@ -1461,19 +1503,19 @@ const struct mei_cfg *mei_me_get_cfg(kernel_ulong_t idx) /** * mei_me_dev_init - allocates and initializes the mei device structure * - * @pdev: The pci device structure + * @parent: device associated with physical device (pci/platform) * @cfg: per device generation config * * Return: The mei_device pointer on success, NULL on failure. */ -struct mei_device *mei_me_dev_init(struct pci_dev *pdev, +struct mei_device *mei_me_dev_init(struct device *parent, const struct mei_cfg *cfg) { struct mei_device *dev; struct mei_me_hw *hw; int i; - dev = devm_kzalloc(&pdev->dev, sizeof(struct mei_device) + + dev = devm_kzalloc(parent, sizeof(struct mei_device) + sizeof(struct mei_me_hw), GFP_KERNEL); if (!dev) return NULL; @@ -1483,7 +1525,7 @@ struct mei_device *mei_me_dev_init(struct pci_dev *pdev, for (i = 0; i < DMA_DSCR_NUM; i++) dev->dr_dscr[i].size = cfg->dma_size[i]; - mei_device_init(dev, &pdev->dev, &mei_me_hw_ops); + mei_device_init(dev, parent, &mei_me_hw_ops); hw->cfg = cfg; dev->fw_f_fw_ver_supported = cfg->fw_ver_supported; diff --git a/drivers/misc/mei/hw-me.h b/drivers/misc/mei/hw-me.h index 1d8794828cbc..4a8d4dcd5a91 100644 --- a/drivers/misc/mei/hw-me.h +++ b/drivers/misc/mei/hw-me.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 */ /* - * Copyright (c) 2012-2018, Intel Corporation. All rights reserved. + * Copyright (c) 2012-2019, Intel Corporation. All rights reserved. * Intel Management Engine Interface (Intel MEI) Linux driver */ @@ -21,12 +21,14 @@ * @quirk_probe: device exclusion quirk * @dma_size: device DMA buffers size * @fw_ver_supported: is fw version retrievable from FW + * @hw_trc_supported: does the hw support trc register */ struct mei_cfg { const struct mei_fw_status fw_status; bool (*quirk_probe)(struct pci_dev *pdev); size_t dma_size[DMA_DSCR_NUM]; u32 fw_ver_supported:1; + u32 hw_trc_supported:1; }; @@ -42,16 +44,20 @@ struct mei_cfg { * * @cfg: per device generation config and ops * @mem_addr: io memory address + * @irq: irq number * @pg_state: power gating state * @d0i3_supported: di03 support * @hbuf_depth: depth of hardware host/write buffer in slots + * @read_fws: read FW status register handler */ struct mei_me_hw { const struct mei_cfg *cfg; void __iomem *mem_addr; + int irq; enum mei_pg_state pg_state; bool d0i3_supported; u8 hbuf_depth; + int (*read_fws)(const struct mei_device *dev, int where, u32 *val); }; #define to_me_hw(dev) (struct mei_me_hw *)((dev)->hw) @@ -74,6 +80,7 @@ struct mei_me_hw { * servers platforms with quirk for * SPS firmware exclusion. * @MEI_ME_PCH12_CFG: Platform Controller Hub Gen12 and newer + * @MEI_ME_PCH15_CFG: Platform Controller Hub Gen15 and newer * @MEI_ME_NUM_CFG: Upper Sentinel. */ enum mei_cfg_idx { @@ -86,12 +93,13 @@ enum mei_cfg_idx { MEI_ME_PCH8_CFG, MEI_ME_PCH8_SPS_CFG, MEI_ME_PCH12_CFG, + MEI_ME_PCH15_CFG, MEI_ME_NUM_CFG, }; const struct mei_cfg *mei_me_get_cfg(kernel_ulong_t idx); -struct mei_device *mei_me_dev_init(struct pci_dev *pdev, +struct mei_device *mei_me_dev_init(struct device *parent, const struct mei_cfg *cfg); int mei_me_pg_enter_sync(struct mei_device *dev); diff --git a/drivers/misc/mei/hw-txe.c b/drivers/misc/mei/hw-txe.c index 5e58656b8e19..785b260b3ae9 100644 --- a/drivers/misc/mei/hw-txe.c +++ b/drivers/misc/mei/hw-txe.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* - * Copyright (c) 2013-2014, Intel Corporation. All rights reserved. + * Copyright (c) 2013-2019, Intel Corporation. All rights reserved. * Intel Management Engine Interface (Intel MEI) Linux driver */ @@ -660,14 +660,16 @@ static int mei_txe_fw_status(struct mei_device *dev, } /** - * mei_txe_hw_config - configure hardware at the start of the devices + * mei_txe_hw_config - configure hardware at the start of the devices * * @dev: the device structure * * Configure hardware at the start of the device should be done only * once at the device probe time + * + * Return: always 0 */ -static void mei_txe_hw_config(struct mei_device *dev) +static int mei_txe_hw_config(struct mei_device *dev) { struct mei_txe_hw *hw = to_txe_hw(dev); @@ -677,6 +679,8 @@ static void mei_txe_hw_config(struct mei_device *dev) dev_dbg(dev->dev, "aliveness_resp = 0x%08x, readiness = 0x%08x.\n", hw->aliveness, hw->readiness); + + return 0; } /** diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c index b9fef773e71b..bcee77768b91 100644 --- a/drivers/misc/mei/init.c +++ b/drivers/misc/mei/init.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* - * Copyright (c) 2012-2018, Intel Corporation. All rights reserved. + * Copyright (c) 2012-2019, Intel Corporation. All rights reserved. * Intel Management Engine Interface (Intel MEI) Linux driver */ @@ -190,7 +190,9 @@ int mei_start(struct mei_device *dev) /* acknowledge interrupt and stop interrupts */ mei_clear_interrupts(dev); - mei_hw_config(dev); + ret = mei_hw_config(dev); + if (ret) + goto err; dev_dbg(dev->dev, "reset in start the mei device.\n"); diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c index 7310b476323c..f17297f2943d 100644 --- a/drivers/misc/mei/main.c +++ b/drivers/misc/mei/main.c @@ -533,24 +533,6 @@ out: } /** - * mei_compat_ioctl - the compat IOCTL function - * - * @file: pointer to file structure - * @cmd: ioctl command - * @data: pointer to mei message structure - * - * Return: 0 on success , <0 on error - */ -#ifdef CONFIG_COMPAT -static long mei_compat_ioctl(struct file *file, - unsigned int cmd, unsigned long data) -{ - return mei_ioctl(file, cmd, (unsigned long)compat_ptr(data)); -} -#endif - - -/** * mei_poll - the poll function * * @file: pointer to file structure @@ -701,6 +683,29 @@ static int mei_fasync(int fd, struct file *file, int band) } /** + * trc_show - mei device trc attribute show method + * + * @device: device pointer + * @attr: attribute pointer + * @buf: char out buffer + * + * Return: number of the bytes printed into buf or error + */ +static ssize_t trc_show(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct mei_device *dev = dev_get_drvdata(device); + u32 trc; + int ret; + + ret = mei_trc_status(dev, &trc); + if (ret) + return ret; + return sprintf(buf, "%08X\n", trc); +} +static DEVICE_ATTR_RO(trc); + +/** * fw_status_show - mei device fw_status attribute show method * * @device: device pointer @@ -887,6 +892,7 @@ static struct attribute *mei_attrs[] = { &dev_attr_tx_queue_limit.attr, &dev_attr_fw_ver.attr, &dev_attr_dev_state.attr, + &dev_attr_trc.attr, NULL }; ATTRIBUTE_GROUPS(mei); @@ -898,9 +904,7 @@ static const struct file_operations mei_fops = { .owner = THIS_MODULE, .read = mei_read, .unlocked_ioctl = mei_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = mei_compat_ioctl, -#endif + .compat_ioctl = compat_ptr_ioctl, .open = mei_open, .release = mei_release, .write = mei_write, diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index 0f2141178299..76f8ff5ff974 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 */ /* - * Copyright (c) 2003-2018, Intel Corporation. All rights reserved. + * Copyright (c) 2003-2019, Intel Corporation. All rights reserved. * Intel Management Engine Interface (Intel MEI) Linux driver */ @@ -260,6 +260,7 @@ struct mei_cl { * @hw_config : configure hw * * @fw_status : get fw status registers + * @trc_status : get trc status register * @pg_state : power gating state of the device * @pg_in_transition : is device now in pg transition * @pg_is_enabled : is power gating enabled @@ -287,9 +288,11 @@ struct mei_hw_ops { bool (*hw_is_ready)(struct mei_device *dev); int (*hw_reset)(struct mei_device *dev, bool enable); int (*hw_start)(struct mei_device *dev); - void (*hw_config)(struct mei_device *dev); + int (*hw_config)(struct mei_device *dev); int (*fw_status)(struct mei_device *dev, struct mei_fw_status *fw_sts); + int (*trc_status)(struct mei_device *dev, u32 *trc); + enum mei_pg_state (*pg_state)(struct mei_device *dev); bool (*pg_in_transition)(struct mei_device *dev); bool (*pg_is_enabled)(struct mei_device *dev); @@ -614,9 +617,9 @@ void mei_irq_compl_handler(struct mei_device *dev, struct list_head *cmpl_list); */ -static inline void mei_hw_config(struct mei_device *dev) +static inline int mei_hw_config(struct mei_device *dev) { - dev->ops->hw_config(dev); + return dev->ops->hw_config(dev); } static inline enum mei_pg_state mei_pg_state(struct mei_device *dev) @@ -711,6 +714,13 @@ static inline int mei_count_full_read_slots(struct mei_device *dev) return dev->ops->rdbuf_full_slots(dev); } +static inline int mei_trc_status(struct mei_device *dev, u32 *trc) +{ + if (dev->ops->trc_status) + return dev->ops->trc_status(dev, trc); + return -EOPNOTSUPP; +} + static inline int mei_fw_status(struct mei_device *dev, struct mei_fw_status *fw_status) { diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c index 3dca63eddaa0..c845b7e40f26 100644 --- a/drivers/misc/mei/pci-me.c +++ b/drivers/misc/mei/pci-me.c @@ -98,12 +98,13 @@ static const struct pci_device_id mei_me_pci_tbl[] = { {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_LP, MEI_ME_PCH12_CFG)}, {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_LP_3, MEI_ME_PCH8_CFG)}, + {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_V, MEI_ME_PCH12_CFG)}, {MEI_PCI_DEVICE(MEI_DEV_ID_ICP_LP, MEI_ME_PCH12_CFG)}, - {MEI_PCI_DEVICE(MEI_DEV_ID_TGP_LP, MEI_ME_PCH12_CFG)}, + {MEI_PCI_DEVICE(MEI_DEV_ID_TGP_LP, MEI_ME_PCH15_CFG)}, - {MEI_PCI_DEVICE(MEI_DEV_ID_MCC, MEI_ME_PCH12_CFG)}, + {MEI_PCI_DEVICE(MEI_DEV_ID_MCC, MEI_ME_PCH15_CFG)}, {MEI_PCI_DEVICE(MEI_DEV_ID_MCC_4, MEI_ME_PCH8_CFG)}, /* required last entry */ @@ -120,6 +121,13 @@ static inline void mei_me_set_pm_domain(struct mei_device *dev) {} static inline void mei_me_unset_pm_domain(struct mei_device *dev) {} #endif /* CONFIG_PM */ +static int mei_me_read_fws(const struct mei_device *dev, int where, u32 *val) +{ + struct pci_dev *pdev = to_pci_dev(dev->dev); + + return pci_read_config_dword(pdev, where, val); +} + /** * mei_me_quirk_probe - probe for devices that doesn't valid ME interface * @@ -191,13 +199,15 @@ static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent) } /* allocates and initializes the mei dev structure */ - dev = mei_me_dev_init(pdev, cfg); + dev = mei_me_dev_init(&pdev->dev, cfg); if (!dev) { err = -ENOMEM; goto end; } hw = to_me_hw(dev); hw->mem_addr = pcim_iomap_table(pdev)[0]; + hw->irq = pdev->irq; + hw->read_fws = mei_me_read_fws; pci_enable_msi(pdev); |