// SPDX-License-Identifier: GPL-2.0 /* * Intel On Demand (Software Defined Silicon) driver * * Copyright (c) 2022, Intel Corporation. * All Rights Reserved. * * Author: "David E. Box" <[email protected]> */ #include <linux/auxiliary_bus.h> #include <linux/bits.h> #include <linux/bitfield.h> #include <linux/device.h> #include <linux/intel_vsec.h> #include <linux/iopoll.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/overflow.h> #include <linux/pci.h> #include <linux/slab.h> #include <linux/sysfs.h> #include <linux/types.h> #include <linux/uaccess.h> #define ACCESS_TYPE_BARID … #define ACCESS_TYPE_LOCAL … #define SDSI_MIN_SIZE_DWORDS … #define SDSI_SIZE_MAILBOX … #define SDSI_SIZE_REGS … #define SDSI_SIZE_CMD … /* * Write messages are currently up to the size of the mailbox * while read messages are up to 4 times the size of the * mailbox, sent in packets */ #define SDSI_SIZE_WRITE_MSG … #define SDSI_SIZE_READ_MSG … #define SDSI_ENABLED_FEATURES_OFFSET … #define SDSI_FEATURE_SDSI … #define SDSI_FEATURE_METERING … #define SDSI_SOCKET_ID_OFFSET … #define SDSI_SOCKET_ID … #define SDSI_MBOX_CMD_SUCCESS … #define SDSI_MBOX_CMD_TIMEOUT … #define MBOX_TIMEOUT_US … #define MBOX_TIMEOUT_ACQUIRE_US … #define MBOX_POLLING_PERIOD_US … #define MBOX_ACQUIRE_NUM_RETRIES … #define MBOX_ACQUIRE_RETRY_DELAY_MS … #define MBOX_MAX_PACKETS … #define MBOX_OWNER_NONE … #define MBOX_OWNER_INBAND … #define CTRL_RUN_BUSY … #define CTRL_READ_WRITE … #define CTRL_SOM … #define CTRL_EOM … #define CTRL_OWNER … #define CTRL_COMPLETE … #define CTRL_READY … #define CTRL_INBAND_LOCK … #define CTRL_METER_ENABLE_DRAM … #define CTRL_STATUS … #define CTRL_PACKET_SIZE … #define CTRL_MSG_SIZE … #define DISC_TABLE_SIZE … #define DT_ACCESS_TYPE … #define DT_SIZE … #define DT_TBIR … #define DT_OFFSET(v) … #define SDSI_GUID_V1 … #define GUID_V1_CNTRL_SIZE … #define GUID_V1_REGS_SIZE … #define SDSI_GUID_V2 … #define GUID_V2_CNTRL_SIZE … #define GUID_V2_REGS_SIZE … enum sdsi_command { … }; struct sdsi_mbox_info { … }; struct disc_table { … }; struct sdsi_priv { … }; /* SDSi mailbox operations must be performed using 64bit mov instructions */ static __always_inline void sdsi_memcpy64_toio(u64 __iomem *to, const u64 *from, size_t count_bytes) { … } static __always_inline void sdsi_memcpy64_fromio(u64 *to, const u64 __iomem *from, size_t count_bytes) { … } static inline void sdsi_complete_transaction(struct sdsi_priv *priv) { … } static int sdsi_status_to_errno(u32 status) { … } static int sdsi_mbox_poll(struct sdsi_priv *priv, struct sdsi_mbox_info *info, size_t *data_size) { … } static int sdsi_mbox_cmd_read(struct sdsi_priv *priv, struct sdsi_mbox_info *info, size_t *data_size) { … } static int sdsi_mbox_cmd_write(struct sdsi_priv *priv, struct sdsi_mbox_info *info, size_t *data_size) { … } static int sdsi_mbox_acquire(struct sdsi_priv *priv, struct sdsi_mbox_info *info) { … } static int sdsi_mbox_write(struct sdsi_priv *priv, struct sdsi_mbox_info *info, size_t *data_size) { … } static int sdsi_mbox_read(struct sdsi_priv *priv, struct sdsi_mbox_info *info, size_t *data_size) { … } static bool sdsi_ib_locked(struct sdsi_priv *priv) { … } static ssize_t sdsi_provision(struct sdsi_priv *priv, char *buf, size_t count, enum sdsi_command command) { … } static ssize_t provision_akc_write(struct file *filp, struct kobject *kobj, struct bin_attribute *attr, char *buf, loff_t off, size_t count) { … } static BIN_ATTR_WO(provision_akc, SDSI_SIZE_WRITE_MSG); static ssize_t provision_cap_write(struct file *filp, struct kobject *kobj, struct bin_attribute *attr, char *buf, loff_t off, size_t count) { … } static BIN_ATTR_WO(provision_cap, SDSI_SIZE_WRITE_MSG); static ssize_t certificate_read(u64 command, u64 control_flags, struct sdsi_priv *priv, char *buf, loff_t off, size_t count) { … } static ssize_t state_certificate_read(struct file *filp, struct kobject *kobj, struct bin_attribute *attr, char *buf, loff_t off, size_t count) { … } static BIN_ATTR_ADMIN_RO(state_certificate, SDSI_SIZE_READ_MSG); static ssize_t meter_certificate_read(struct file *filp, struct kobject *kobj, struct bin_attribute *attr, char *buf, loff_t off, size_t count) { … } static BIN_ATTR_ADMIN_RO(meter_certificate, SDSI_SIZE_READ_MSG); static ssize_t meter_current_read(struct file *filp, struct kobject *kobj, struct bin_attribute *attr, char *buf, loff_t off, size_t count) { … } static BIN_ATTR_ADMIN_RO(meter_current, SDSI_SIZE_READ_MSG); static ssize_t registers_read(struct file *filp, struct kobject *kobj, struct bin_attribute *attr, char *buf, loff_t off, size_t count) { … } static BIN_ATTR_ADMIN_RO(registers, SDSI_SIZE_REGS); static struct bin_attribute *sdsi_bin_attrs[] = …; static umode_t sdsi_battr_is_visible(struct kobject *kobj, struct bin_attribute *attr, int n) { … } static ssize_t guid_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(guid); static struct attribute *sdsi_attrs[] = …; static const struct attribute_group sdsi_group = …; __ATTRIBUTE_GROUPS(…); static int sdsi_get_layout(struct sdsi_priv *priv, struct disc_table *table) { … } static int sdsi_map_mbox_registers(struct sdsi_priv *priv, struct pci_dev *parent, struct disc_table *disc_table, struct resource *disc_res) { … } static int sdsi_probe(struct auxiliary_device *auxdev, const struct auxiliary_device_id *id) { … } static const struct auxiliary_device_id sdsi_aux_id_table[] = …; MODULE_DEVICE_TABLE(auxiliary, sdsi_aux_id_table); static struct auxiliary_driver sdsi_aux_driver = …; module_auxiliary_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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