Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0
/*
 * Microsemi Switchtec(tm) PCIe Management Driver
 * Copyright (c) 2017, Microsemi Corporation
 */
 
#include <linux/switchtec.h>
#include <linux/switchtec_ioctl.h>
 
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/uaccess.h>
#include <linux/poll.h>
#include <linux/wait.h>
#include <linux/io-64-nonatomic-lo-hi.h>
#include <linux/nospec.h>
 
MODULE_DESCRIPTION("Microsemi Switchtec(tm) PCIe Management Driver");
MODULE_VERSION("0.1");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Microsemi Corporation");
 
static int max_devices = 16;
module_param(max_devices, int, 0644);
MODULE_PARM_DESC(max_devices, "max number of switchtec device instances");
 
static bool use_dma_mrpc = true;
module_param(use_dma_mrpc, bool, 0644);
MODULE_PARM_DESC(use_dma_mrpc,
<------><------> "Enable the use of the DMA MRPC feature");
 
static int nirqs = 32;
module_param(nirqs, int, 0644);
MODULE_PARM_DESC(nirqs, "number of interrupts to allocate (more may be useful for NTB applications)");
 
static dev_t switchtec_devt;
static DEFINE_IDA(switchtec_minor_ida);
 
struct class *switchtec_class;
EXPORT_SYMBOL_GPL(switchtec_class);
 
enum mrpc_state {
<------>MRPC_IDLE = 0,
<------>MRPC_QUEUED,
<------>MRPC_RUNNING,
<------>MRPC_DONE,
};
 
struct switchtec_user {
<------>struct switchtec_dev *stdev;
 
<------>enum mrpc_state state;
 
<------>wait_queue_head_t cmd_comp;
<------>struct kref kref;
<------>struct list_head list;
 
<------>bool cmd_done;
<------>u32 cmd;
<------>u32 status;
<------>u32 return_code;
<------>size_t data_len;
<------>size_t read_len;
<------>unsigned char data[SWITCHTEC_MRPC_PAYLOAD_SIZE];
<------>int event_cnt;
};
 
static struct switchtec_user *stuser_create(struct switchtec_dev *stdev)
{
<------>struct switchtec_user *stuser;
 
<------>stuser = kzalloc(sizeof(*stuser), GFP_KERNEL);
<------>if (!stuser)
<------><------>return ERR_PTR(-ENOMEM);
 
<------>get_device(&stdev->dev);
<------>stuser->stdev = stdev;
<------>kref_init(&stuser->kref);
<------>INIT_LIST_HEAD(&stuser->list);
<------>init_waitqueue_head(&stuser->cmd_comp);
<------>stuser->event_cnt = atomic_read(&stdev->event_cnt);
 
<------>dev_dbg(&stdev->dev, "%s: %p\n", __func__, stuser);
 
<------>return stuser;
}
 
static void stuser_free(struct kref *kref)
{
<------>struct switchtec_user *stuser;
 
<------>stuser = container_of(kref, struct switchtec_user, kref);
 
<------>dev_dbg(&stuser->stdev->dev, "%s: %p\n", __func__, stuser);
 
<------>put_device(&stuser->stdev->dev);
<------>kfree(stuser);
}
 
static void stuser_put(struct switchtec_user *stuser)
{
<------>kref_put(&stuser->kref, stuser_free);
}
 
static void stuser_set_state(struct switchtec_user *stuser,
<------><------><------>     enum mrpc_state state)
{
<------>/* requires the mrpc_mutex to already be held when called */
 
<------>const char * const state_names[] = {
<------><------>[MRPC_IDLE] = "IDLE",
<------><------>[MRPC_QUEUED] = "QUEUED",
<------><------>[MRPC_RUNNING] = "RUNNING",
<------><------>[MRPC_DONE] = "DONE",
<------>};
 
<------>stuser->state = state;
 
<------>dev_dbg(&stuser->stdev->dev, "stuser state %p -> %s",
<------><------>stuser, state_names[state]);
}
 
static void mrpc_complete_cmd(struct switchtec_dev *stdev);
 
static void flush_wc_buf(struct switchtec_dev *stdev)
{
<------>struct ntb_dbmsg_regs __iomem *mmio_dbmsg;
 
<------>/*
<------> * odb (outbound doorbell) register is processed by low latency
<------> * hardware and w/o side effect
<------> */
<------>mmio_dbmsg = (void __iomem *)stdev->mmio_ntb +
<------><------>SWITCHTEC_NTB_REG_DBMSG_OFFSET;
<------>ioread32(&mmio_dbmsg->odb);
}
 
static void mrpc_cmd_submit(struct switchtec_dev *stdev)
{
<------>/* requires the mrpc_mutex to already be held when called */
 
<------>struct switchtec_user *stuser;
 
<------>if (stdev->mrpc_busy)
<------><------>return;
 
<------>if (list_empty(&stdev->mrpc_queue))
<------><------>return;
 
<------>stuser = list_entry(stdev->mrpc_queue.next, struct switchtec_user,
<------><------><------>    list);
 
<------>if (stdev->dma_mrpc) {
<------><------>stdev->dma_mrpc->status = SWITCHTEC_MRPC_STATUS_INPROGRESS;
<------><------>memset(stdev->dma_mrpc->data, 0xFF, SWITCHTEC_MRPC_PAYLOAD_SIZE);
<------>}
 
<------>stuser_set_state(stuser, MRPC_RUNNING);
<------>stdev->mrpc_busy = 1;
<------>memcpy_toio(&stdev->mmio_mrpc->input_data,
<------><------>    stuser->data, stuser->data_len);
<------>flush_wc_buf(stdev);
<------>iowrite32(stuser->cmd, &stdev->mmio_mrpc->cmd);
 
<------>schedule_delayed_work(&stdev->mrpc_timeout,
<------><------><------>      msecs_to_jiffies(500));
}
 
static int mrpc_queue_cmd(struct switchtec_user *stuser)
{
<------>/* requires the mrpc_mutex to already be held when called */
 
<------>struct switchtec_dev *stdev = stuser->stdev;
 
<------>kref_get(&stuser->kref);
<------>stuser->read_len = sizeof(stuser->data);
<------>stuser_set_state(stuser, MRPC_QUEUED);
<------>stuser->cmd_done = false;
<------>list_add_tail(&stuser->list, &stdev->mrpc_queue);
 
<------>mrpc_cmd_submit(stdev);
 
<------>return 0;
}
 
static void mrpc_complete_cmd(struct switchtec_dev *stdev)
{
<------>/* requires the mrpc_mutex to already be held when called */
<------>struct switchtec_user *stuser;
 
<------>if (list_empty(&stdev->mrpc_queue))
<------><------>return;
 
<------>stuser = list_entry(stdev->mrpc_queue.next, struct switchtec_user,
<------><------><------>    list);
 
<------>if (stdev->dma_mrpc)
<------><------>stuser->status = stdev->dma_mrpc->status;
<------>else
<------><------>stuser->status = ioread32(&stdev->mmio_mrpc->status);
 
<------>if (stuser->status == SWITCHTEC_MRPC_STATUS_INPROGRESS)
<------><------>return;
 
<------>stuser_set_state(stuser, MRPC_DONE);
<------>stuser->return_code = 0;
 
<------>if (stuser->status != SWITCHTEC_MRPC_STATUS_DONE)
<------><------>goto out;
 
<------>if (stdev->dma_mrpc)
<------><------>stuser->return_code = stdev->dma_mrpc->rtn_code;
<------>else
<------><------>stuser->return_code = ioread32(&stdev->mmio_mrpc->ret_value);
<------>if (stuser->return_code != 0)
<------><------>goto out;
 
<------>if (stdev->dma_mrpc)
<------><------>memcpy(stuser->data, &stdev->dma_mrpc->data,
<------><------><------>      stuser->read_len);
<------>else
<------><------>memcpy_fromio(stuser->data, &stdev->mmio_mrpc->output_data,
<------><------><------>      stuser->read_len);
out:
<------>stuser->cmd_done = true;
<------>wake_up_interruptible(&stuser->cmd_comp);
<------>list_del_init(&stuser->list);
<------>stuser_put(stuser);
<------>stdev->mrpc_busy = 0;
 
<------>mrpc_cmd_submit(stdev);
}
 
static void mrpc_event_work(struct work_struct *work)
{
<------>struct switchtec_dev *stdev;
 
<------>stdev = container_of(work, struct switchtec_dev, mrpc_work);
 
<------>dev_dbg(&stdev->dev, "%s\n", __func__);
 
<------>mutex_lock(&stdev->mrpc_mutex);
<------>cancel_delayed_work(&stdev->mrpc_timeout);
<------>mrpc_complete_cmd(stdev);
<------>mutex_unlock(&stdev->mrpc_mutex);
}
 
static void mrpc_timeout_work(struct work_struct *work)
{
<------>struct switchtec_dev *stdev;
<------>u32 status;
 
<------>stdev = container_of(work, struct switchtec_dev, mrpc_timeout.work);
 
<------>dev_dbg(&stdev->dev, "%s\n", __func__);
 
<------>mutex_lock(&stdev->mrpc_mutex);
 
<------>if (stdev->dma_mrpc)
<------><------>status = stdev->dma_mrpc->status;
<------>else
<------><------>status = ioread32(&stdev->mmio_mrpc->status);
<------>if (status == SWITCHTEC_MRPC_STATUS_INPROGRESS) {
<------><------>schedule_delayed_work(&stdev->mrpc_timeout,
<------><------><------><------>      msecs_to_jiffies(500));
<------><------>goto out;
<------>}
 
<------>mrpc_complete_cmd(stdev);
out:
<------>mutex_unlock(&stdev->mrpc_mutex);
}
 
static ssize_t device_version_show(struct device *dev,
<------>struct device_attribute *attr, char *buf)
{
<------>struct switchtec_dev *stdev = to_stdev(dev);
<------>u32 ver;
 
<------>ver = ioread32(&stdev->mmio_sys_info->device_version);
 
<------>return sprintf(buf, "%x\n", ver);
}
static DEVICE_ATTR_RO(device_version);
 
static ssize_t fw_version_show(struct device *dev,
<------>struct device_attribute *attr, char *buf)
{
<------>struct switchtec_dev *stdev = to_stdev(dev);
<------>u32 ver;
 
<------>ver = ioread32(&stdev->mmio_sys_info->firmware_version);
 
<------>return sprintf(buf, "%08x\n", ver);
}
static DEVICE_ATTR_RO(fw_version);
 
static ssize_t io_string_show(char *buf, void __iomem *attr, size_t len)
{
<------>int i;
 
<------>memcpy_fromio(buf, attr, len);
<------>buf[len] = '\n';
<------>buf[len + 1] = 0;
 
<------>for (i = len - 1; i > 0; i--) {
<------><------>if (buf[i] != ' ')
<------><------><------>break;
<------><------>buf[i] = '\n';
<------><------>buf[i + 1] = 0;
<------>}
 
<------>return strlen(buf);
}
 
#define DEVICE_ATTR_SYS_INFO_STR(field) \
static ssize_t field ## _show(struct device *dev, \
<------>struct device_attribute *attr, char *buf) \
{ \
<------>struct switchtec_dev *stdev = to_stdev(dev); \
<------>struct sys_info_regs __iomem *si = stdev->mmio_sys_info; \
<------>if (stdev->gen == SWITCHTEC_GEN3) \
<------><------>return io_string_show(buf, &si->gen3.field, \
<------><------><------><------>      sizeof(si->gen3.field)); \
<------>else if (stdev->gen == SWITCHTEC_GEN4) \
<------><------>return io_string_show(buf, &si->gen4.field, \
<------><------><------><------>      sizeof(si->gen4.field)); \
<------>else \
<------><------>return -ENOTSUPP; \
} \
\
static DEVICE_ATTR_RO(field)
 
DEVICE_ATTR_SYS_INFO_STR(vendor_id);
DEVICE_ATTR_SYS_INFO_STR(product_id);
DEVICE_ATTR_SYS_INFO_STR(product_revision);
 
static ssize_t component_vendor_show(struct device *dev,
<------><------><------><------>     struct device_attribute *attr, char *buf)
{
<------>struct switchtec_dev *stdev = to_stdev(dev);
<------>struct sys_info_regs __iomem *si = stdev->mmio_sys_info;
 
<------>/* component_vendor field not supported after gen3 */
<------>if (stdev->gen != SWITCHTEC_GEN3)
<------><------>return sprintf(buf, "none\n");
 
<------>return io_string_show(buf, &si->gen3.component_vendor,
<------><------><------>      sizeof(si->gen3.component_vendor));
}
static DEVICE_ATTR_RO(component_vendor);
 
static ssize_t component_id_show(struct device *dev,
<------>struct device_attribute *attr, char *buf)
{
<------>struct switchtec_dev *stdev = to_stdev(dev);
<------>int id = ioread16(&stdev->mmio_sys_info->gen3.component_id);
 
<------>/* component_id field not supported after gen3 */
<------>if (stdev->gen != SWITCHTEC_GEN3)
<------><------>return sprintf(buf, "none\n");
 
<------>return sprintf(buf, "PM%04X\n", id);
}
static DEVICE_ATTR_RO(component_id);
 
static ssize_t component_revision_show(struct device *dev,
<------>struct device_attribute *attr, char *buf)
{
<------>struct switchtec_dev *stdev = to_stdev(dev);
<------>int rev = ioread8(&stdev->mmio_sys_info->gen3.component_revision);
 
<------>/* component_revision field not supported after gen3 */
<------>if (stdev->gen != SWITCHTEC_GEN3)
<------><------>return sprintf(buf, "255\n");
 
<------>return sprintf(buf, "%d\n", rev);
}
static DEVICE_ATTR_RO(component_revision);
 
static ssize_t partition_show(struct device *dev,
<------>struct device_attribute *attr, char *buf)
{
<------>struct switchtec_dev *stdev = to_stdev(dev);
 
<------>return sprintf(buf, "%d\n", stdev->partition);
}
static DEVICE_ATTR_RO(partition);
 
static ssize_t partition_count_show(struct device *dev,
<------>struct device_attribute *attr, char *buf)
{
<------>struct switchtec_dev *stdev = to_stdev(dev);
 
<------>return sprintf(buf, "%d\n", stdev->partition_count);
}
static DEVICE_ATTR_RO(partition_count);
 
static struct attribute *switchtec_device_attrs[] = {
<------>&dev_attr_device_version.attr,
<------>&dev_attr_fw_version.attr,
<------>&dev_attr_vendor_id.attr,
<------>&dev_attr_product_id.attr,
<------>&dev_attr_product_revision.attr,
<------>&dev_attr_component_vendor.attr,
<------>&dev_attr_component_id.attr,
<------>&dev_attr_component_revision.attr,
<------>&dev_attr_partition.attr,
<------>&dev_attr_partition_count.attr,
<------>NULL,
};
 
ATTRIBUTE_GROUPS(switchtec_device);
 
static int switchtec_dev_open(struct inode *inode, struct file *filp)
{
<------>struct switchtec_dev *stdev;
<------>struct switchtec_user *stuser;
 
<------>stdev = container_of(inode->i_cdev, struct switchtec_dev, cdev);
 
<------>stuser = stuser_create(stdev);
<------>if (IS_ERR(stuser))
<------><------>return PTR_ERR(stuser);
 
<------>filp->private_data = stuser;
<------>stream_open(inode, filp);
 
<------>dev_dbg(&stdev->dev, "%s: %p\n", __func__, stuser);
 
<------>return 0;
}
 
static int switchtec_dev_release(struct inode *inode, struct file *filp)
{
<------>struct switchtec_user *stuser = filp->private_data;
 
<------>stuser_put(stuser);
 
<------>return 0;
}
 
static int lock_mutex_and_test_alive(struct switchtec_dev *stdev)
{
<------>if (mutex_lock_interruptible(&stdev->mrpc_mutex))
<------><------>return -EINTR;
 
<------>if (!stdev->alive) {
<------><------>mutex_unlock(&stdev->mrpc_mutex);
<------><------>return -ENODEV;
<------>}
 
<------>return 0;
}
 
static ssize_t switchtec_dev_write(struct file *filp, const char __user *data,
<------><------><------><------>   size_t size, loff_t *off)
{
<------>struct switchtec_user *stuser = filp->private_data;
<------>struct switchtec_dev *stdev = stuser->stdev;
<------>int rc;
 
<------>if (size < sizeof(stuser->cmd) ||
<------>    size > sizeof(stuser->cmd) + sizeof(stuser->data))
<------><------>return -EINVAL;
 
<------>stuser->data_len = size - sizeof(stuser->cmd);
 
<------>rc = lock_mutex_and_test_alive(stdev);
<------>if (rc)
<------><------>return rc;
 
<------>if (stuser->state != MRPC_IDLE) {
<------><------>rc = -EBADE;
<------><------>goto out;
<------>}
 
<------>rc = copy_from_user(&stuser->cmd, data, sizeof(stuser->cmd));
<------>if (rc) {
<------><------>rc = -EFAULT;
<------><------>goto out;
<------>}
<------>if (((MRPC_CMD_ID(stuser->cmd) == MRPC_GAS_WRITE) ||
<------>     (MRPC_CMD_ID(stuser->cmd) == MRPC_GAS_READ)) &&
<------>    !capable(CAP_SYS_ADMIN)) {
<------><------>rc = -EPERM;
<------><------>goto out;
<------>}
 
<------>data += sizeof(stuser->cmd);
<------>rc = copy_from_user(&stuser->data, data, size - sizeof(stuser->cmd));
<------>if (rc) {
<------><------>rc = -EFAULT;
<------><------>goto out;
<------>}
 
<------>rc = mrpc_queue_cmd(stuser);
 
out:
<------>mutex_unlock(&stdev->mrpc_mutex);
 
<------>if (rc)
<------><------>return rc;
 
<------>return size;
}
 
static ssize_t switchtec_dev_read(struct file *filp, char __user *data,
<------><------><------><------>  size_t size, loff_t *off)
{
<------>struct switchtec_user *stuser = filp->private_data;
<------>struct switchtec_dev *stdev = stuser->stdev;
<------>int rc;
 
<------>if (size < sizeof(stuser->cmd) ||
<------>    size > sizeof(stuser->cmd) + sizeof(stuser->data))
<------><------>return -EINVAL;
 
<------>rc = lock_mutex_and_test_alive(stdev);
<------>if (rc)
<------><------>return rc;
 
<------>if (stuser->state == MRPC_IDLE) {
<------><------>mutex_unlock(&stdev->mrpc_mutex);
<------><------>return -EBADE;
<------>}
 
<------>stuser->read_len = size - sizeof(stuser->return_code);
 
<------>mutex_unlock(&stdev->mrpc_mutex);
 
<------>if (filp->f_flags & O_NONBLOCK) {
<------><------>if (!stuser->cmd_done)
<------><------><------>return -EAGAIN;
<------>} else {
<------><------>rc = wait_event_interruptible(stuser->cmd_comp,
<------><------><------><------><------>      stuser->cmd_done);
<------><------>if (rc < 0)
<------><------><------>return rc;
<------>}
 
<------>rc = lock_mutex_and_test_alive(stdev);
<------>if (rc)
<------><------>return rc;
 
<------>if (stuser->state != MRPC_DONE) {
<------><------>mutex_unlock(&stdev->mrpc_mutex);
<------><------>return -EBADE;
<------>}
 
<------>rc = copy_to_user(data, &stuser->return_code,
<------><------><------>  sizeof(stuser->return_code));
<------>if (rc) {
<------><------>rc = -EFAULT;
<------><------>goto out;
<------>}
 
<------>data += sizeof(stuser->return_code);
<------>rc = copy_to_user(data, &stuser->data,
<------><------><------>  size - sizeof(stuser->return_code));
<------>if (rc) {
<------><------>rc = -EFAULT;
<------><------>goto out;
<------>}
 
<------>stuser_set_state(stuser, MRPC_IDLE);
 
out:
<------>mutex_unlock(&stdev->mrpc_mutex);
 
<------>if (stuser->status == SWITCHTEC_MRPC_STATUS_DONE)
<------><------>return size;
<------>else if (stuser->status == SWITCHTEC_MRPC_STATUS_INTERRUPTED)
<------><------>return -ENXIO;
<------>else
<------><------>return -EBADMSG;
}
 
static __poll_t switchtec_dev_poll(struct file *filp, poll_table *wait)
{
<------>struct switchtec_user *stuser = filp->private_data;
<------>struct switchtec_dev *stdev = stuser->stdev;
<------>__poll_t ret = 0;
 
<------>poll_wait(filp, &stuser->cmd_comp, wait);
<------>poll_wait(filp, &stdev->event_wq, wait);
 
<------>if (lock_mutex_and_test_alive(stdev))
<------><------>return EPOLLIN | EPOLLRDHUP | EPOLLOUT | EPOLLERR | EPOLLHUP;
 
<------>mutex_unlock(&stdev->mrpc_mutex);
 
<------>if (stuser->cmd_done)
<------><------>ret |= EPOLLIN | EPOLLRDNORM;
 
<------>if (stuser->event_cnt != atomic_read(&stdev->event_cnt))
<------><------>ret |= EPOLLPRI | EPOLLRDBAND;
 
<------>return ret;
}
 
static int ioctl_flash_info(struct switchtec_dev *stdev,
<------><------><------>    struct switchtec_ioctl_flash_info __user *uinfo)
{
<------>struct switchtec_ioctl_flash_info info = {0};
<------>struct flash_info_regs __iomem *fi = stdev->mmio_flash_info;
 
<------>if (stdev->gen == SWITCHTEC_GEN3) {
<------><------>info.flash_length = ioread32(&fi->gen3.flash_length);
<------><------>info.num_partitions = SWITCHTEC_NUM_PARTITIONS_GEN3;
<------>} else if (stdev->gen == SWITCHTEC_GEN4) {
<------><------>info.flash_length = ioread32(&fi->gen4.flash_length);
<------><------>info.num_partitions = SWITCHTEC_NUM_PARTITIONS_GEN4;
<------>} else {
<------><------>return -ENOTSUPP;
<------>}
 
<------>if (copy_to_user(uinfo, &info, sizeof(info)))
<------><------>return -EFAULT;
 
<------>return 0;
}
 
static void set_fw_info_part(struct switchtec_ioctl_flash_part_info *info,
<------><------><------>     struct partition_info __iomem *pi)
{
<------>info->address = ioread32(&pi->address);
<------>info->length = ioread32(&pi->length);
}
 
static int flash_part_info_gen3(struct switchtec_dev *stdev,
<------><------>struct switchtec_ioctl_flash_part_info *info)
{
<------>struct flash_info_regs_gen3 __iomem *fi =
<------><------>&stdev->mmio_flash_info->gen3;
<------>struct sys_info_regs_gen3 __iomem *si = &stdev->mmio_sys_info->gen3;
<------>u32 active_addr = -1;
 
<------>switch (info->flash_partition) {
<------>case SWITCHTEC_IOCTL_PART_CFG0:
<------><------>active_addr = ioread32(&fi->active_cfg);
<------><------>set_fw_info_part(info, &fi->cfg0);
<------><------>if (ioread16(&si->cfg_running) == SWITCHTEC_GEN3_CFG0_RUNNING)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_CFG1:
<------><------>active_addr = ioread32(&fi->active_cfg);
<------><------>set_fw_info_part(info, &fi->cfg1);
<------><------>if (ioread16(&si->cfg_running) == SWITCHTEC_GEN3_CFG1_RUNNING)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_IMG0:
<------><------>active_addr = ioread32(&fi->active_img);
<------><------>set_fw_info_part(info, &fi->img0);
<------><------>if (ioread16(&si->img_running) == SWITCHTEC_GEN3_IMG0_RUNNING)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_IMG1:
<------><------>active_addr = ioread32(&fi->active_img);
<------><------>set_fw_info_part(info, &fi->img1);
<------><------>if (ioread16(&si->img_running) == SWITCHTEC_GEN3_IMG1_RUNNING)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_NVLOG:
<------><------>set_fw_info_part(info, &fi->nvlog);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_VENDOR0:
<------><------>set_fw_info_part(info, &fi->vendor[0]);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_VENDOR1:
<------><------>set_fw_info_part(info, &fi->vendor[1]);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_VENDOR2:
<------><------>set_fw_info_part(info, &fi->vendor[2]);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_VENDOR3:
<------><------>set_fw_info_part(info, &fi->vendor[3]);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_VENDOR4:
<------><------>set_fw_info_part(info, &fi->vendor[4]);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_VENDOR5:
<------><------>set_fw_info_part(info, &fi->vendor[5]);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_VENDOR6:
<------><------>set_fw_info_part(info, &fi->vendor[6]);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_VENDOR7:
<------><------>set_fw_info_part(info, &fi->vendor[7]);
<------><------>break;
<------>default:
<------><------>return -EINVAL;
<------>}
 
<------>if (info->address == active_addr)
<------><------>info->active |= SWITCHTEC_IOCTL_PART_ACTIVE;
 
<------>return 0;
}
 
static int flash_part_info_gen4(struct switchtec_dev *stdev,
<------><------>struct switchtec_ioctl_flash_part_info *info)
{
<------>struct flash_info_regs_gen4 __iomem *fi = &stdev->mmio_flash_info->gen4;
<------>struct sys_info_regs_gen4 __iomem *si = &stdev->mmio_sys_info->gen4;
<------>struct active_partition_info_gen4 __iomem *af = &fi->active_flag;
 
<------>switch (info->flash_partition) {
<------>case SWITCHTEC_IOCTL_PART_MAP_0:
<------><------>set_fw_info_part(info, &fi->map0);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_MAP_1:
<------><------>set_fw_info_part(info, &fi->map1);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_KEY_0:
<------><------>set_fw_info_part(info, &fi->key0);
<------><------>if (ioread8(&af->key) == SWITCHTEC_GEN4_KEY0_ACTIVE)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_ACTIVE;
<------><------>if (ioread16(&si->key_running) == SWITCHTEC_GEN4_KEY0_RUNNING)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_KEY_1:
<------><------>set_fw_info_part(info, &fi->key1);
<------><------>if (ioread8(&af->key) == SWITCHTEC_GEN4_KEY1_ACTIVE)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_ACTIVE;
<------><------>if (ioread16(&si->key_running) == SWITCHTEC_GEN4_KEY1_RUNNING)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_BL2_0:
<------><------>set_fw_info_part(info, &fi->bl2_0);
<------><------>if (ioread8(&af->bl2) == SWITCHTEC_GEN4_BL2_0_ACTIVE)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_ACTIVE;
<------><------>if (ioread16(&si->bl2_running) == SWITCHTEC_GEN4_BL2_0_RUNNING)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_BL2_1:
<------><------>set_fw_info_part(info, &fi->bl2_1);
<------><------>if (ioread8(&af->bl2) == SWITCHTEC_GEN4_BL2_1_ACTIVE)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_ACTIVE;
<------><------>if (ioread16(&si->bl2_running) == SWITCHTEC_GEN4_BL2_1_RUNNING)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_CFG0:
<------><------>set_fw_info_part(info, &fi->cfg0);
<------><------>if (ioread8(&af->cfg) == SWITCHTEC_GEN4_CFG0_ACTIVE)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_ACTIVE;
<------><------>if (ioread16(&si->cfg_running) == SWITCHTEC_GEN4_CFG0_RUNNING)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_CFG1:
<------><------>set_fw_info_part(info, &fi->cfg1);
<------><------>if (ioread8(&af->cfg) == SWITCHTEC_GEN4_CFG1_ACTIVE)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_ACTIVE;
<------><------>if (ioread16(&si->cfg_running) == SWITCHTEC_GEN4_CFG1_RUNNING)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_IMG0:
<------><------>set_fw_info_part(info, &fi->img0);
<------><------>if (ioread8(&af->img) == SWITCHTEC_GEN4_IMG0_ACTIVE)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_ACTIVE;
<------><------>if (ioread16(&si->img_running) == SWITCHTEC_GEN4_IMG0_RUNNING)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_IMG1:
<------><------>set_fw_info_part(info, &fi->img1);
<------><------>if (ioread8(&af->img) == SWITCHTEC_GEN4_IMG1_ACTIVE)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_ACTIVE;
<------><------>if (ioread16(&si->img_running) == SWITCHTEC_GEN4_IMG1_RUNNING)
<------><------><------>info->active |= SWITCHTEC_IOCTL_PART_RUNNING;
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_NVLOG:
<------><------>set_fw_info_part(info, &fi->nvlog);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_VENDOR0:
<------><------>set_fw_info_part(info, &fi->vendor[0]);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_VENDOR1:
<------><------>set_fw_info_part(info, &fi->vendor[1]);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_VENDOR2:
<------><------>set_fw_info_part(info, &fi->vendor[2]);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_VENDOR3:
<------><------>set_fw_info_part(info, &fi->vendor[3]);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_VENDOR4:
<------><------>set_fw_info_part(info, &fi->vendor[4]);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_VENDOR5:
<------><------>set_fw_info_part(info, &fi->vendor[5]);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_VENDOR6:
<------><------>set_fw_info_part(info, &fi->vendor[6]);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PART_VENDOR7:
<------><------>set_fw_info_part(info, &fi->vendor[7]);
<------><------>break;
<------>default:
<------><------>return -EINVAL;
<------>}
 
<------>return 0;
}
 
static int ioctl_flash_part_info(struct switchtec_dev *stdev,
<------><------>struct switchtec_ioctl_flash_part_info __user *uinfo)
{
<------>int ret;
<------>struct switchtec_ioctl_flash_part_info info = {0};
 
<------>if (copy_from_user(&info, uinfo, sizeof(info)))
<------><------>return -EFAULT;
 
<------>if (stdev->gen == SWITCHTEC_GEN3) {
<------><------>ret = flash_part_info_gen3(stdev, &info);
<------><------>if (ret)
<------><------><------>return ret;
<------>} else if (stdev->gen == SWITCHTEC_GEN4) {
<------><------>ret = flash_part_info_gen4(stdev, &info);
<------><------>if (ret)
<------><------><------>return ret;
<------>} else {
<------><------>return -ENOTSUPP;
<------>}
 
<------>if (copy_to_user(uinfo, &info, sizeof(info)))
<------><------>return -EFAULT;
 
<------>return 0;
}
 
static int ioctl_event_summary(struct switchtec_dev *stdev,
<------>struct switchtec_user *stuser,
<------>struct switchtec_ioctl_event_summary __user *usum,
<------>size_t size)
{
<------>struct switchtec_ioctl_event_summary *s;
<------>int i;
<------>u32 reg;
<------>int ret = 0;
 
<------>s = kzalloc(sizeof(*s), GFP_KERNEL);
<------>if (!s)
<------><------>return -ENOMEM;
 
<------>s->global = ioread32(&stdev->mmio_sw_event->global_summary);
<------>s->part_bitmap = ioread64(&stdev->mmio_sw_event->part_event_bitmap);
<------>s->local_part = ioread32(&stdev->mmio_part_cfg->part_event_summary);
 
<------>for (i = 0; i < stdev->partition_count; i++) {
<------><------>reg = ioread32(&stdev->mmio_part_cfg_all[i].part_event_summary);
<------><------>s->part[i] = reg;
<------>}
 
<------>for (i = 0; i < stdev->pff_csr_count; i++) {
<------><------>reg = ioread32(&stdev->mmio_pff_csr[i].pff_event_summary);
<------><------>s->pff[i] = reg;
<------>}
 
<------>if (copy_to_user(usum, s, size)) {
<------><------>ret = -EFAULT;
<------><------>goto error_case;
<------>}
 
<------>stuser->event_cnt = atomic_read(&stdev->event_cnt);
 
error_case:
<------>kfree(s);
<------>return ret;
}
 
static u32 __iomem *global_ev_reg(struct switchtec_dev *stdev,
<------><------><------><------>  size_t offset, int index)
{
<------>return (void __iomem *)stdev->mmio_sw_event + offset;
}
 
static u32 __iomem *part_ev_reg(struct switchtec_dev *stdev,
<------><------><------><------>size_t offset, int index)
{
<------>return (void __iomem *)&stdev->mmio_part_cfg_all[index] + offset;
}
 
static u32 __iomem *pff_ev_reg(struct switchtec_dev *stdev,
<------><------><------>       size_t offset, int index)
{
<------>return (void __iomem *)&stdev->mmio_pff_csr[index] + offset;
}
 
#define EV_GLB(i, r)[i] = {offsetof(struct sw_event_regs, r), global_ev_reg}
#define EV_PAR(i, r)[i] = {offsetof(struct part_cfg_regs, r), part_ev_reg}
#define EV_PFF(i, r)[i] = {offsetof(struct pff_csr_regs, r), pff_ev_reg}
 
static const struct event_reg {
<------>size_t offset;
<------>u32 __iomem *(*map_reg)(struct switchtec_dev *stdev,
<------><------><------><------>size_t offset, int index);
} event_regs[] = {
<------>EV_GLB(SWITCHTEC_IOCTL_EVENT_STACK_ERROR, stack_error_event_hdr),
<------>EV_GLB(SWITCHTEC_IOCTL_EVENT_PPU_ERROR, ppu_error_event_hdr),
<------>EV_GLB(SWITCHTEC_IOCTL_EVENT_ISP_ERROR, isp_error_event_hdr),
<------>EV_GLB(SWITCHTEC_IOCTL_EVENT_SYS_RESET, sys_reset_event_hdr),
<------>EV_GLB(SWITCHTEC_IOCTL_EVENT_FW_EXC, fw_exception_hdr),
<------>EV_GLB(SWITCHTEC_IOCTL_EVENT_FW_NMI, fw_nmi_hdr),
<------>EV_GLB(SWITCHTEC_IOCTL_EVENT_FW_NON_FATAL, fw_non_fatal_hdr),
<------>EV_GLB(SWITCHTEC_IOCTL_EVENT_FW_FATAL, fw_fatal_hdr),
<------>EV_GLB(SWITCHTEC_IOCTL_EVENT_TWI_MRPC_COMP, twi_mrpc_comp_hdr),
<------>EV_GLB(SWITCHTEC_IOCTL_EVENT_TWI_MRPC_COMP_ASYNC,
<------>       twi_mrpc_comp_async_hdr),
<------>EV_GLB(SWITCHTEC_IOCTL_EVENT_CLI_MRPC_COMP, cli_mrpc_comp_hdr),
<------>EV_GLB(SWITCHTEC_IOCTL_EVENT_CLI_MRPC_COMP_ASYNC,
<------>       cli_mrpc_comp_async_hdr),
<------>EV_GLB(SWITCHTEC_IOCTL_EVENT_GPIO_INT, gpio_interrupt_hdr),
<------>EV_GLB(SWITCHTEC_IOCTL_EVENT_GFMS, gfms_event_hdr),
<------>EV_PAR(SWITCHTEC_IOCTL_EVENT_PART_RESET, part_reset_hdr),
<------>EV_PAR(SWITCHTEC_IOCTL_EVENT_MRPC_COMP, mrpc_comp_hdr),
<------>EV_PAR(SWITCHTEC_IOCTL_EVENT_MRPC_COMP_ASYNC, mrpc_comp_async_hdr),
<------>EV_PAR(SWITCHTEC_IOCTL_EVENT_DYN_PART_BIND_COMP, dyn_binding_hdr),
<------>EV_PAR(SWITCHTEC_IOCTL_EVENT_INTERCOMM_REQ_NOTIFY,
<------>       intercomm_notify_hdr),
<------>EV_PFF(SWITCHTEC_IOCTL_EVENT_AER_IN_P2P, aer_in_p2p_hdr),
<------>EV_PFF(SWITCHTEC_IOCTL_EVENT_AER_IN_VEP, aer_in_vep_hdr),
<------>EV_PFF(SWITCHTEC_IOCTL_EVENT_DPC, dpc_hdr),
<------>EV_PFF(SWITCHTEC_IOCTL_EVENT_CTS, cts_hdr),
<------>EV_PFF(SWITCHTEC_IOCTL_EVENT_UEC, uec_hdr),
<------>EV_PFF(SWITCHTEC_IOCTL_EVENT_HOTPLUG, hotplug_hdr),
<------>EV_PFF(SWITCHTEC_IOCTL_EVENT_IER, ier_hdr),
<------>EV_PFF(SWITCHTEC_IOCTL_EVENT_THRESH, threshold_hdr),
<------>EV_PFF(SWITCHTEC_IOCTL_EVENT_POWER_MGMT, power_mgmt_hdr),
<------>EV_PFF(SWITCHTEC_IOCTL_EVENT_TLP_THROTTLING, tlp_throttling_hdr),
<------>EV_PFF(SWITCHTEC_IOCTL_EVENT_FORCE_SPEED, force_speed_hdr),
<------>EV_PFF(SWITCHTEC_IOCTL_EVENT_CREDIT_TIMEOUT, credit_timeout_hdr),
<------>EV_PFF(SWITCHTEC_IOCTL_EVENT_LINK_STATE, link_state_hdr),
};
 
static u32 __iomem *event_hdr_addr(struct switchtec_dev *stdev,
<------><------><------><------>   int event_id, int index)
{
<------>size_t off;
 
<------>if (event_id < 0 || event_id >= SWITCHTEC_IOCTL_MAX_EVENTS)
<------><------>return (u32 __iomem *)ERR_PTR(-EINVAL);
 
<------>off = event_regs[event_id].offset;
 
<------>if (event_regs[event_id].map_reg == part_ev_reg) {
<------><------>if (index == SWITCHTEC_IOCTL_EVENT_LOCAL_PART_IDX)
<------><------><------>index = stdev->partition;
<------><------>else if (index < 0 || index >= stdev->partition_count)
<------><------><------>return (u32 __iomem *)ERR_PTR(-EINVAL);
<------>} else if (event_regs[event_id].map_reg == pff_ev_reg) {
<------><------>if (index < 0 || index >= stdev->pff_csr_count)
<------><------><------>return (u32 __iomem *)ERR_PTR(-EINVAL);
<------>}
 
<------>return event_regs[event_id].map_reg(stdev, off, index);
}
 
static int event_ctl(struct switchtec_dev *stdev,
<------><------>     struct switchtec_ioctl_event_ctl *ctl)
{
<------>int i;
<------>u32 __iomem *reg;
<------>u32 hdr;
 
<------>reg = event_hdr_addr(stdev, ctl->event_id, ctl->index);
<------>if (IS_ERR(reg))
<------><------>return PTR_ERR(reg);
 
<------>hdr = ioread32(reg);
<------>for (i = 0; i < ARRAY_SIZE(ctl->data); i++)
<------><------>ctl->data[i] = ioread32(&reg[i + 1]);
 
<------>ctl->occurred = hdr & SWITCHTEC_EVENT_OCCURRED;
<------>ctl->count = (hdr >> 5) & 0xFF;
 
<------>if (!(ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_CLEAR))
<------><------>hdr &= ~SWITCHTEC_EVENT_CLEAR;
<------>if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_EN_POLL)
<------><------>hdr |= SWITCHTEC_EVENT_EN_IRQ;
<------>if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_DIS_POLL)
<------><------>hdr &= ~SWITCHTEC_EVENT_EN_IRQ;
<------>if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_EN_LOG)
<------><------>hdr |= SWITCHTEC_EVENT_EN_LOG;
<------>if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_DIS_LOG)
<------><------>hdr &= ~SWITCHTEC_EVENT_EN_LOG;
<------>if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_EN_CLI)
<------><------>hdr |= SWITCHTEC_EVENT_EN_CLI;
<------>if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_DIS_CLI)
<------><------>hdr &= ~SWITCHTEC_EVENT_EN_CLI;
<------>if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_EN_FATAL)
<------><------>hdr |= SWITCHTEC_EVENT_FATAL;
<------>if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_DIS_FATAL)
<------><------>hdr &= ~SWITCHTEC_EVENT_FATAL;
 
<------>if (ctl->flags)
<------><------>iowrite32(hdr, reg);
 
<------>ctl->flags = 0;
<------>if (hdr & SWITCHTEC_EVENT_EN_IRQ)
<------><------>ctl->flags |= SWITCHTEC_IOCTL_EVENT_FLAG_EN_POLL;
<------>if (hdr & SWITCHTEC_EVENT_EN_LOG)
<------><------>ctl->flags |= SWITCHTEC_IOCTL_EVENT_FLAG_EN_LOG;
<------>if (hdr & SWITCHTEC_EVENT_EN_CLI)
<------><------>ctl->flags |= SWITCHTEC_IOCTL_EVENT_FLAG_EN_CLI;
<------>if (hdr & SWITCHTEC_EVENT_FATAL)
<------><------>ctl->flags |= SWITCHTEC_IOCTL_EVENT_FLAG_EN_FATAL;
 
<------>return 0;
}
 
static int ioctl_event_ctl(struct switchtec_dev *stdev,
<------>struct switchtec_ioctl_event_ctl __user *uctl)
{
<------>int ret;
<------>int nr_idxs;
<------>unsigned int event_flags;
<------>struct switchtec_ioctl_event_ctl ctl;
 
<------>if (copy_from_user(&ctl, uctl, sizeof(ctl)))
<------><------>return -EFAULT;
 
<------>if (ctl.event_id >= SWITCHTEC_IOCTL_MAX_EVENTS)
<------><------>return -EINVAL;
 
<------>if (ctl.flags & SWITCHTEC_IOCTL_EVENT_FLAG_UNUSED)
<------><------>return -EINVAL;
 
<------>if (ctl.index == SWITCHTEC_IOCTL_EVENT_IDX_ALL) {
<------><------>if (event_regs[ctl.event_id].map_reg == global_ev_reg)
<------><------><------>nr_idxs = 1;
<------><------>else if (event_regs[ctl.event_id].map_reg == part_ev_reg)
<------><------><------>nr_idxs = stdev->partition_count;
<------><------>else if (event_regs[ctl.event_id].map_reg == pff_ev_reg)
<------><------><------>nr_idxs = stdev->pff_csr_count;
<------><------>else
<------><------><------>return -EINVAL;
 
<------><------>event_flags = ctl.flags;
<------><------>for (ctl.index = 0; ctl.index < nr_idxs; ctl.index++) {
<------><------><------>ctl.flags = event_flags;
<------><------><------>ret = event_ctl(stdev, &ctl);
<------><------><------>if (ret < 0)
<------><------><------><------>return ret;
<------><------>}
<------>} else {
<------><------>ret = event_ctl(stdev, &ctl);
<------><------>if (ret < 0)
<------><------><------>return ret;
<------>}
 
<------>if (copy_to_user(uctl, &ctl, sizeof(ctl)))
<------><------>return -EFAULT;
 
<------>return 0;
}
 
static int ioctl_pff_to_port(struct switchtec_dev *stdev,
<------><------><------>     struct switchtec_ioctl_pff_port __user *up)
{
<------>int i, part;
<------>u32 reg;
<------>struct part_cfg_regs __iomem *pcfg;
<------>struct switchtec_ioctl_pff_port p;
 
<------>if (copy_from_user(&p, up, sizeof(p)))
<------><------>return -EFAULT;
 
<------>p.port = -1;
<------>for (part = 0; part < stdev->partition_count; part++) {
<------><------>pcfg = &stdev->mmio_part_cfg_all[part];
<------><------>p.partition = part;
 
<------><------>reg = ioread32(&pcfg->usp_pff_inst_id);
<------><------>if (reg == p.pff) {
<------><------><------>p.port = 0;
<------><------><------>break;
<------><------>}
 
<------><------>reg = ioread32(&pcfg->vep_pff_inst_id);
<------><------>if (reg == p.pff) {
<------><------><------>p.port = SWITCHTEC_IOCTL_PFF_VEP;
<------><------><------>break;
<------><------>}
 
<------><------>for (i = 0; i < ARRAY_SIZE(pcfg->dsp_pff_inst_id); i++) {
<------><------><------>reg = ioread32(&pcfg->dsp_pff_inst_id[i]);
<------><------><------>if (reg != p.pff)
<------><------><------><------>continue;
 
<------><------><------>p.port = i + 1;
<------><------><------>break;
<------><------>}
 
<------><------>if (p.port != -1)
<------><------><------>break;
<------>}
 
<------>if (copy_to_user(up, &p, sizeof(p)))
<------><------>return -EFAULT;
 
<------>return 0;
}
 
static int ioctl_port_to_pff(struct switchtec_dev *stdev,
<------><------><------>     struct switchtec_ioctl_pff_port __user *up)
{
<------>struct switchtec_ioctl_pff_port p;
<------>struct part_cfg_regs __iomem *pcfg;
 
<------>if (copy_from_user(&p, up, sizeof(p)))
<------><------>return -EFAULT;
 
<------>if (p.partition == SWITCHTEC_IOCTL_EVENT_LOCAL_PART_IDX)
<------><------>pcfg = stdev->mmio_part_cfg;
<------>else if (p.partition < stdev->partition_count)
<------><------>pcfg = &stdev->mmio_part_cfg_all[p.partition];
<------>else
<------><------>return -EINVAL;
 
<------>switch (p.port) {
<------>case 0:
<------><------>p.pff = ioread32(&pcfg->usp_pff_inst_id);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PFF_VEP:
<------><------>p.pff = ioread32(&pcfg->vep_pff_inst_id);
<------><------>break;
<------>default:
<------><------>if (p.port > ARRAY_SIZE(pcfg->dsp_pff_inst_id))
<------><------><------>return -EINVAL;
<------><------>p.port = array_index_nospec(p.port,
<------><------><------><------><------>ARRAY_SIZE(pcfg->dsp_pff_inst_id) + 1);
<------><------>p.pff = ioread32(&pcfg->dsp_pff_inst_id[p.port - 1]);
<------><------>break;
<------>}
 
<------>if (copy_to_user(up, &p, sizeof(p)))
<------><------>return -EFAULT;
 
<------>return 0;
}
 
static long switchtec_dev_ioctl(struct file *filp, unsigned int cmd,
<------><------><------><------>unsigned long arg)
{
<------>struct switchtec_user *stuser = filp->private_data;
<------>struct switchtec_dev *stdev = stuser->stdev;
<------>int rc;
<------>void __user *argp = (void __user *)arg;
 
<------>rc = lock_mutex_and_test_alive(stdev);
<------>if (rc)
<------><------>return rc;
 
<------>switch (cmd) {
<------>case SWITCHTEC_IOCTL_FLASH_INFO:
<------><------>rc = ioctl_flash_info(stdev, argp);
<------><------>break;
<------>case SWITCHTEC_IOCTL_FLASH_PART_INFO:
<------><------>rc = ioctl_flash_part_info(stdev, argp);
<------><------>break;
<------>case SWITCHTEC_IOCTL_EVENT_SUMMARY_LEGACY:
<------><------>rc = ioctl_event_summary(stdev, stuser, argp,
<------><------><------><------><------> sizeof(struct switchtec_ioctl_event_summary_legacy));
<------><------>break;
<------>case SWITCHTEC_IOCTL_EVENT_CTL:
<------><------>rc = ioctl_event_ctl(stdev, argp);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PFF_TO_PORT:
<------><------>rc = ioctl_pff_to_port(stdev, argp);
<------><------>break;
<------>case SWITCHTEC_IOCTL_PORT_TO_PFF:
<------><------>rc = ioctl_port_to_pff(stdev, argp);
<------><------>break;
<------>case SWITCHTEC_IOCTL_EVENT_SUMMARY:
<------><------>rc = ioctl_event_summary(stdev, stuser, argp,
<------><------><------><------><------> sizeof(struct switchtec_ioctl_event_summary));
<------><------>break;
<------>default:
<------><------>rc = -ENOTTY;
<------><------>break;
<------>}
 
<------>mutex_unlock(&stdev->mrpc_mutex);
<------>return rc;
}
 
static const struct file_operations switchtec_fops = {
<------>.owner = THIS_MODULE,
<------>.open = switchtec_dev_open,
<------>.release = switchtec_dev_release,
<------>.write = switchtec_dev_write,
<------>.read = switchtec_dev_read,
<------>.poll = switchtec_dev_poll,
<------>.unlocked_ioctl = switchtec_dev_ioctl,
<------>.compat_ioctl = compat_ptr_ioctl,
};
 
static void link_event_work(struct work_struct *work)
{
<------>struct switchtec_dev *stdev;
 
<------>stdev = container_of(work, struct switchtec_dev, link_event_work);
 
<------>if (stdev->link_notifier)
<------><------>stdev->link_notifier(stdev);
}
 
static void check_link_state_events(struct switchtec_dev *stdev)
{
<------>int idx;
<------>u32 reg;
<------>int count;
<------>int occurred = 0;
 
<------>for (idx = 0; idx < stdev->pff_csr_count; idx++) {
<------><------>reg = ioread32(&stdev->mmio_pff_csr[idx].link_state_hdr);
<------><------>dev_dbg(&stdev->dev, "link_state: %d->%08x\n", idx, reg);
<------><------>count = (reg >> 5) & 0xFF;
 
<------><------>if (count != stdev->link_event_count[idx]) {
<------><------><------>occurred = 1;
<------><------><------>stdev->link_event_count[idx] = count;
<------><------>}
<------>}
 
<------>if (occurred)
<------><------>schedule_work(&stdev->link_event_work);
}
 
static void enable_link_state_events(struct switchtec_dev *stdev)
{
<------>int idx;
 
<------>for (idx = 0; idx < stdev->pff_csr_count; idx++) {
<------><------>iowrite32(SWITCHTEC_EVENT_CLEAR |
<------><------><------>  SWITCHTEC_EVENT_EN_IRQ,
<------><------><------>  &stdev->mmio_pff_csr[idx].link_state_hdr);
<------>}
}
 
static void enable_dma_mrpc(struct switchtec_dev *stdev)
{
<------>writeq(stdev->dma_mrpc_dma_addr, &stdev->mmio_mrpc->dma_addr);
<------>flush_wc_buf(stdev);
<------>iowrite32(SWITCHTEC_DMA_MRPC_EN, &stdev->mmio_mrpc->dma_en);
}
 
static void stdev_release(struct device *dev)
{
<------>struct switchtec_dev *stdev = to_stdev(dev);
 
<------>if (stdev->dma_mrpc) {
<------><------>iowrite32(0, &stdev->mmio_mrpc->dma_en);
<------><------>flush_wc_buf(stdev);
<------><------>writeq(0, &stdev->mmio_mrpc->dma_addr);
<------><------>dma_free_coherent(&stdev->pdev->dev, sizeof(*stdev->dma_mrpc),
<------><------><------><------>stdev->dma_mrpc, stdev->dma_mrpc_dma_addr);
<------>}
<------>kfree(stdev);
}
 
static void stdev_kill(struct switchtec_dev *stdev)
{
<------>struct switchtec_user *stuser, *tmpuser;
 
<------>pci_clear_master(stdev->pdev);
 
<------>cancel_delayed_work_sync(&stdev->mrpc_timeout);
 
<------>/* Mark the hardware as unavailable and complete all completions */
<------>mutex_lock(&stdev->mrpc_mutex);
<------>stdev->alive = false;
 
<------>/* Wake up and kill any users waiting on an MRPC request */
<------>list_for_each_entry_safe(stuser, tmpuser, &stdev->mrpc_queue, list) {
<------><------>stuser->cmd_done = true;
<------><------>wake_up_interruptible(&stuser->cmd_comp);
<------><------>list_del_init(&stuser->list);
<------><------>stuser_put(stuser);
<------>}
 
<------>mutex_unlock(&stdev->mrpc_mutex);
 
<------>/* Wake up any users waiting on event_wq */
<------>wake_up_interruptible(&stdev->event_wq);
}
 
static struct switchtec_dev *stdev_create(struct pci_dev *pdev)
{
<------>struct switchtec_dev *stdev;
<------>int minor;
<------>struct device *dev;
<------>struct cdev *cdev;
<------>int rc;
 
<------>stdev = kzalloc_node(sizeof(*stdev), GFP_KERNEL,
<------><------><------>     dev_to_node(&pdev->dev));
<------>if (!stdev)
<------><------>return ERR_PTR(-ENOMEM);
 
<------>stdev->alive = true;
<------>stdev->pdev = pdev;
<------>INIT_LIST_HEAD(&stdev->mrpc_queue);
<------>mutex_init(&stdev->mrpc_mutex);
<------>stdev->mrpc_busy = 0;
<------>INIT_WORK(&stdev->mrpc_work, mrpc_event_work);
<------>INIT_DELAYED_WORK(&stdev->mrpc_timeout, mrpc_timeout_work);
<------>INIT_WORK(&stdev->link_event_work, link_event_work);
<------>init_waitqueue_head(&stdev->event_wq);
<------>atomic_set(&stdev->event_cnt, 0);
 
<------>dev = &stdev->dev;
<------>device_initialize(dev);
<------>dev->class = switchtec_class;
<------>dev->parent = &pdev->dev;
<------>dev->groups = switchtec_device_groups;
<------>dev->release = stdev_release;
 
<------>minor = ida_simple_get(&switchtec_minor_ida, 0, 0,
<------><------><------>       GFP_KERNEL);
<------>if (minor < 0) {
<------><------>rc = minor;
<------><------>goto err_put;
<------>}
 
<------>dev->devt = MKDEV(MAJOR(switchtec_devt), minor);
<------>dev_set_name(dev, "switchtec%d", minor);
 
<------>cdev = &stdev->cdev;
<------>cdev_init(cdev, &switchtec_fops);
<------>cdev->owner = THIS_MODULE;
 
<------>return stdev;
 
err_put:
<------>put_device(&stdev->dev);
<------>return ERR_PTR(rc);
}
 
static int mask_event(struct switchtec_dev *stdev, int eid, int idx)
{
<------>size_t off = event_regs[eid].offset;
<------>u32 __iomem *hdr_reg;
<------>u32 hdr;
 
<------>hdr_reg = event_regs[eid].map_reg(stdev, off, idx);
<------>hdr = ioread32(hdr_reg);
 
<------>if (!(hdr & SWITCHTEC_EVENT_OCCURRED && hdr & SWITCHTEC_EVENT_EN_IRQ))
<------><------>return 0;
 
<------>dev_dbg(&stdev->dev, "%s: %d %d %x\n", __func__, eid, idx, hdr);
<------>hdr &= ~(SWITCHTEC_EVENT_EN_IRQ | SWITCHTEC_EVENT_OCCURRED);
<------>iowrite32(hdr, hdr_reg);
 
<------>return 1;
}
 
static int mask_all_events(struct switchtec_dev *stdev, int eid)
{
<------>int idx;
<------>int count = 0;
 
<------>if (event_regs[eid].map_reg == part_ev_reg) {
<------><------>for (idx = 0; idx < stdev->partition_count; idx++)
<------><------><------>count += mask_event(stdev, eid, idx);
<------>} else if (event_regs[eid].map_reg == pff_ev_reg) {
<------><------>for (idx = 0; idx < stdev->pff_csr_count; idx++) {
<------><------><------>if (!stdev->pff_local[idx])
<------><------><------><------>continue;
 
<------><------><------>count += mask_event(stdev, eid, idx);
<------><------>}
<------>} else {
<------><------>count += mask_event(stdev, eid, 0);
<------>}
 
<------>return count;
}
 
static irqreturn_t switchtec_event_isr(int irq, void *dev)
{
<------>struct switchtec_dev *stdev = dev;
<------>u32 reg;
<------>irqreturn_t ret = IRQ_NONE;
<------>int eid, event_count = 0;
 
<------>reg = ioread32(&stdev->mmio_part_cfg->mrpc_comp_hdr);
<------>if (reg & SWITCHTEC_EVENT_OCCURRED) {
<------><------>dev_dbg(&stdev->dev, "%s: mrpc comp\n", __func__);
<------><------>ret = IRQ_HANDLED;
<------><------>schedule_work(&stdev->mrpc_work);
<------><------>iowrite32(reg, &stdev->mmio_part_cfg->mrpc_comp_hdr);
<------>}
 
<------>check_link_state_events(stdev);
 
<------>for (eid = 0; eid < SWITCHTEC_IOCTL_MAX_EVENTS; eid++) {
<------><------>if (eid == SWITCHTEC_IOCTL_EVENT_LINK_STATE ||
<------><------>    eid == SWITCHTEC_IOCTL_EVENT_MRPC_COMP)
<------><------><------>continue;
 
<------><------>event_count += mask_all_events(stdev, eid);
<------>}
 
<------>if (event_count) {
<------><------>atomic_inc(&stdev->event_cnt);
<------><------>wake_up_interruptible(&stdev->event_wq);
<------><------>dev_dbg(&stdev->dev, "%s: %d events\n", __func__,
<------><------><------>event_count);
<------><------>return IRQ_HANDLED;
<------>}
 
<------>return ret;
}
 
 
static irqreturn_t switchtec_dma_mrpc_isr(int irq, void *dev)
{
<------>struct switchtec_dev *stdev = dev;
<------>irqreturn_t ret = IRQ_NONE;
 
<------>iowrite32(SWITCHTEC_EVENT_CLEAR |
<------><------>  SWITCHTEC_EVENT_EN_IRQ,
<------><------>  &stdev->mmio_part_cfg->mrpc_comp_hdr);
<------>schedule_work(&stdev->mrpc_work);
 
<------>ret = IRQ_HANDLED;
<------>return ret;
}
 
static int switchtec_init_isr(struct switchtec_dev *stdev)
{
<------>int nvecs;
<------>int event_irq;
<------>int dma_mrpc_irq;
<------>int rc;
 
<------>if (nirqs < 4)
<------><------>nirqs = 4;
 
<------>nvecs = pci_alloc_irq_vectors(stdev->pdev, 1, nirqs,
<------><------><------><------>      PCI_IRQ_MSIX | PCI_IRQ_MSI |
<------><------><------><------>      PCI_IRQ_VIRTUAL);
<------>if (nvecs < 0)
<------><------>return nvecs;
 
<------>event_irq = ioread16(&stdev->mmio_part_cfg->vep_vector_number);
<------>if (event_irq < 0 || event_irq >= nvecs)
<------><------>return -EFAULT;
 
<------>event_irq = pci_irq_vector(stdev->pdev, event_irq);
<------>if (event_irq < 0)
<------><------>return event_irq;
 
<------>rc = devm_request_irq(&stdev->pdev->dev, event_irq,
<------><------><------><------>switchtec_event_isr, 0,
<------><------><------><------>KBUILD_MODNAME, stdev);
 
<------>if (rc)
<------><------>return rc;
 
<------>if (!stdev->dma_mrpc)
<------><------>return rc;
 
<------>dma_mrpc_irq = ioread32(&stdev->mmio_mrpc->dma_vector);
<------>if (dma_mrpc_irq < 0 || dma_mrpc_irq >= nvecs)
<------><------>return -EFAULT;
 
<------>dma_mrpc_irq  = pci_irq_vector(stdev->pdev, dma_mrpc_irq);
<------>if (dma_mrpc_irq < 0)
<------><------>return dma_mrpc_irq;
 
<------>rc = devm_request_irq(&stdev->pdev->dev, dma_mrpc_irq,
<------><------><------><------>switchtec_dma_mrpc_isr, 0,
<------><------><------><------>KBUILD_MODNAME, stdev);
 
<------>return rc;
}
 
static void init_pff(struct switchtec_dev *stdev)
{
<------>int i;
<------>u32 reg;
<------>struct part_cfg_regs __iomem *pcfg = stdev->mmio_part_cfg;
 
<------>for (i = 0; i < SWITCHTEC_MAX_PFF_CSR; i++) {
<------><------>reg = ioread16(&stdev->mmio_pff_csr[i].vendor_id);
<------><------>if (reg != PCI_VENDOR_ID_MICROSEMI)
<------><------><------>break;
<------>}
 
<------>stdev->pff_csr_count = i;
 
<------>reg = ioread32(&pcfg->usp_pff_inst_id);
<------>if (reg < stdev->pff_csr_count)
<------><------>stdev->pff_local[reg] = 1;
 
<------>reg = ioread32(&pcfg->vep_pff_inst_id);
<------>if (reg < stdev->pff_csr_count)
<------><------>stdev->pff_local[reg] = 1;
 
<------>for (i = 0; i < ARRAY_SIZE(pcfg->dsp_pff_inst_id); i++) {
<------><------>reg = ioread32(&pcfg->dsp_pff_inst_id[i]);
<------><------>if (reg < stdev->pff_csr_count)
<------><------><------>stdev->pff_local[reg] = 1;
<------>}
}
 
static int switchtec_init_pci(struct switchtec_dev *stdev,
<------><------><------>      struct pci_dev *pdev)
{
<------>int rc;
<------>void __iomem *map;
<------>unsigned long res_start, res_len;
<------>u32 __iomem *part_id;
 
<------>rc = pcim_enable_device(pdev);
<------>if (rc)
<------><------>return rc;
 
<------>rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
<------>if (rc)
<------><------>return rc;
 
<------>pci_set_master(pdev);
 
<------>res_start = pci_resource_start(pdev, 0);
<------>res_len = pci_resource_len(pdev, 0);
 
<------>if (!devm_request_mem_region(&pdev->dev, res_start,
<------><------><------><------>     res_len, KBUILD_MODNAME))
<------><------>return -EBUSY;
 
<------>stdev->mmio_mrpc = devm_ioremap_wc(&pdev->dev, res_start,
<------><------><------><------><------>   SWITCHTEC_GAS_TOP_CFG_OFFSET);
<------>if (!stdev->mmio_mrpc)
<------><------>return -ENOMEM;
 
<------>map = devm_ioremap(&pdev->dev,
<------><------><------>   res_start + SWITCHTEC_GAS_TOP_CFG_OFFSET,
<------><------><------>   res_len - SWITCHTEC_GAS_TOP_CFG_OFFSET);
<------>if (!map)
<------><------>return -ENOMEM;
 
<------>stdev->mmio = map - SWITCHTEC_GAS_TOP_CFG_OFFSET;
<------>stdev->mmio_sw_event = stdev->mmio + SWITCHTEC_GAS_SW_EVENT_OFFSET;
<------>stdev->mmio_sys_info = stdev->mmio + SWITCHTEC_GAS_SYS_INFO_OFFSET;
<------>stdev->mmio_flash_info = stdev->mmio + SWITCHTEC_GAS_FLASH_INFO_OFFSET;
<------>stdev->mmio_ntb = stdev->mmio + SWITCHTEC_GAS_NTB_OFFSET;
 
<------>if (stdev->gen == SWITCHTEC_GEN3)
<------><------>part_id = &stdev->mmio_sys_info->gen3.partition_id;
<------>else if (stdev->gen == SWITCHTEC_GEN4)
<------><------>part_id = &stdev->mmio_sys_info->gen4.partition_id;
<------>else
<------><------>return -ENOTSUPP;
 
<------>stdev->partition = ioread8(part_id);
<------>stdev->partition_count = ioread8(&stdev->mmio_ntb->partition_count);
<------>stdev->mmio_part_cfg_all = stdev->mmio + SWITCHTEC_GAS_PART_CFG_OFFSET;
<------>stdev->mmio_part_cfg = &stdev->mmio_part_cfg_all[stdev->partition];
<------>stdev->mmio_pff_csr = stdev->mmio + SWITCHTEC_GAS_PFF_CSR_OFFSET;
 
<------>if (stdev->partition_count < 1)
<------><------>stdev->partition_count = 1;
 
<------>init_pff(stdev);
 
<------>pci_set_drvdata(pdev, stdev);
 
<------>if (!use_dma_mrpc)
<------><------>return 0;
 
<------>if (ioread32(&stdev->mmio_mrpc->dma_ver) == 0)
<------><------>return 0;
 
<------>stdev->dma_mrpc = dma_alloc_coherent(&stdev->pdev->dev,
<------><------><------><------><------>     sizeof(*stdev->dma_mrpc),
<------><------><------><------><------>     &stdev->dma_mrpc_dma_addr,
<------><------><------><------><------>     GFP_KERNEL);
<------>if (stdev->dma_mrpc == NULL)
<------><------>return -ENOMEM;
 
<------>return 0;
}
 
static int switchtec_pci_probe(struct pci_dev *pdev,
<------><------><------>       const struct pci_device_id *id)
{
<------>struct switchtec_dev *stdev;
<------>int rc;
 
<------>if (pdev->class == (PCI_CLASS_BRIDGE_OTHER << 8))
<------><------>request_module_nowait("ntb_hw_switchtec");
 
<------>stdev = stdev_create(pdev);
<------>if (IS_ERR(stdev))
<------><------>return PTR_ERR(stdev);
 
<------>stdev->gen = id->driver_data;
 
<------>rc = switchtec_init_pci(stdev, pdev);
<------>if (rc)
<------><------>goto err_put;
 
<------>rc = switchtec_init_isr(stdev);
<------>if (rc) {
<------><------>dev_err(&stdev->dev, "failed to init isr.\n");
<------><------>goto err_put;
<------>}
 
<------>iowrite32(SWITCHTEC_EVENT_CLEAR |
<------><------>  SWITCHTEC_EVENT_EN_IRQ,
<------><------>  &stdev->mmio_part_cfg->mrpc_comp_hdr);
<------>enable_link_state_events(stdev);
 
<------>if (stdev->dma_mrpc)
<------><------>enable_dma_mrpc(stdev);
 
<------>rc = cdev_device_add(&stdev->cdev, &stdev->dev);
<------>if (rc)
<------><------>goto err_devadd;
 
<------>dev_info(&stdev->dev, "Management device registered.\n");
 
<------>return 0;
 
err_devadd:
<------>stdev_kill(stdev);
err_put:
<------>ida_simple_remove(&switchtec_minor_ida, MINOR(stdev->dev.devt));
<------>put_device(&stdev->dev);
<------>return rc;
}
 
static void switchtec_pci_remove(struct pci_dev *pdev)
{
<------>struct switchtec_dev *stdev = pci_get_drvdata(pdev);
 
<------>pci_set_drvdata(pdev, NULL);
 
<------>cdev_device_del(&stdev->cdev, &stdev->dev);
<------>ida_simple_remove(&switchtec_minor_ida, MINOR(stdev->dev.devt));
<------>dev_info(&stdev->dev, "unregistered.\n");
<------>stdev_kill(stdev);
<------>put_device(&stdev->dev);
}
 
#define SWITCHTEC_PCI_DEVICE(device_id, gen) \
<------>{ \
<------><------>.vendor     = PCI_VENDOR_ID_MICROSEMI, \
<------><------>.device     = device_id, \
<------><------>.subvendor  = PCI_ANY_ID, \
<------><------>.subdevice  = PCI_ANY_ID, \
<------><------>.class      = (PCI_CLASS_MEMORY_OTHER << 8), \
<------><------>.class_mask = 0xFFFFFFFF, \
<------><------>.driver_data = gen, \
<------>}, \
<------>{ \
<------><------>.vendor     = PCI_VENDOR_ID_MICROSEMI, \
<------><------>.device     = device_id, \
<------><------>.subvendor  = PCI_ANY_ID, \
<------><------>.subdevice  = PCI_ANY_ID, \
<------><------>.class      = (PCI_CLASS_BRIDGE_OTHER << 8), \
<------><------>.class_mask = 0xFFFFFFFF, \
<------><------>.driver_data = gen, \
<------>}
 
static const struct pci_device_id switchtec_pci_tbl[] = {
<------>SWITCHTEC_PCI_DEVICE(0x8531, SWITCHTEC_GEN3),  //PFX 24xG3
<------>SWITCHTEC_PCI_DEVICE(0x8532, SWITCHTEC_GEN3),  //PFX 32xG3
<------>SWITCHTEC_PCI_DEVICE(0x8533, SWITCHTEC_GEN3),  //PFX 48xG3
<------>SWITCHTEC_PCI_DEVICE(0x8534, SWITCHTEC_GEN3),  //PFX 64xG3
<------>SWITCHTEC_PCI_DEVICE(0x8535, SWITCHTEC_GEN3),  //PFX 80xG3
<------>SWITCHTEC_PCI_DEVICE(0x8536, SWITCHTEC_GEN3),  //PFX 96xG3
<------>SWITCHTEC_PCI_DEVICE(0x8541, SWITCHTEC_GEN3),  //PSX 24xG3
<------>SWITCHTEC_PCI_DEVICE(0x8542, SWITCHTEC_GEN3),  //PSX 32xG3
<------>SWITCHTEC_PCI_DEVICE(0x8543, SWITCHTEC_GEN3),  //PSX 48xG3
<------>SWITCHTEC_PCI_DEVICE(0x8544, SWITCHTEC_GEN3),  //PSX 64xG3
<------>SWITCHTEC_PCI_DEVICE(0x8545, SWITCHTEC_GEN3),  //PSX 80xG3
<------>SWITCHTEC_PCI_DEVICE(0x8546, SWITCHTEC_GEN3),  //PSX 96xG3
<------>SWITCHTEC_PCI_DEVICE(0x8551, SWITCHTEC_GEN3),  //PAX 24XG3
<------>SWITCHTEC_PCI_DEVICE(0x8552, SWITCHTEC_GEN3),  //PAX 32XG3
<------>SWITCHTEC_PCI_DEVICE(0x8553, SWITCHTEC_GEN3),  //PAX 48XG3
<------>SWITCHTEC_PCI_DEVICE(0x8554, SWITCHTEC_GEN3),  //PAX 64XG3
<------>SWITCHTEC_PCI_DEVICE(0x8555, SWITCHTEC_GEN3),  //PAX 80XG3
<------>SWITCHTEC_PCI_DEVICE(0x8556, SWITCHTEC_GEN3),  //PAX 96XG3
<------>SWITCHTEC_PCI_DEVICE(0x8561, SWITCHTEC_GEN3),  //PFXL 24XG3
<------>SWITCHTEC_PCI_DEVICE(0x8562, SWITCHTEC_GEN3),  //PFXL 32XG3
<------>SWITCHTEC_PCI_DEVICE(0x8563, SWITCHTEC_GEN3),  //PFXL 48XG3
<------>SWITCHTEC_PCI_DEVICE(0x8564, SWITCHTEC_GEN3),  //PFXL 64XG3
<------>SWITCHTEC_PCI_DEVICE(0x8565, SWITCHTEC_GEN3),  //PFXL 80XG3
<------>SWITCHTEC_PCI_DEVICE(0x8566, SWITCHTEC_GEN3),  //PFXL 96XG3
<------>SWITCHTEC_PCI_DEVICE(0x8571, SWITCHTEC_GEN3),  //PFXI 24XG3
<------>SWITCHTEC_PCI_DEVICE(0x8572, SWITCHTEC_GEN3),  //PFXI 32XG3
<------>SWITCHTEC_PCI_DEVICE(0x8573, SWITCHTEC_GEN3),  //PFXI 48XG3
<------>SWITCHTEC_PCI_DEVICE(0x8574, SWITCHTEC_GEN3),  //PFXI 64XG3
<------>SWITCHTEC_PCI_DEVICE(0x8575, SWITCHTEC_GEN3),  //PFXI 80XG3
<------>SWITCHTEC_PCI_DEVICE(0x8576, SWITCHTEC_GEN3),  //PFXI 96XG3
<------>SWITCHTEC_PCI_DEVICE(0x4000, SWITCHTEC_GEN4),  //PFX 100XG4
<------>SWITCHTEC_PCI_DEVICE(0x4084, SWITCHTEC_GEN4),  //PFX 84XG4
<------>SWITCHTEC_PCI_DEVICE(0x4068, SWITCHTEC_GEN4),  //PFX 68XG4
<------>SWITCHTEC_PCI_DEVICE(0x4052, SWITCHTEC_GEN4),  //PFX 52XG4
<------>SWITCHTEC_PCI_DEVICE(0x4036, SWITCHTEC_GEN4),  //PFX 36XG4
<------>SWITCHTEC_PCI_DEVICE(0x4028, SWITCHTEC_GEN4),  //PFX 28XG4
<------>SWITCHTEC_PCI_DEVICE(0x4100, SWITCHTEC_GEN4),  //PSX 100XG4
<------>SWITCHTEC_PCI_DEVICE(0x4184, SWITCHTEC_GEN4),  //PSX 84XG4
<------>SWITCHTEC_PCI_DEVICE(0x4168, SWITCHTEC_GEN4),  //PSX 68XG4
<------>SWITCHTEC_PCI_DEVICE(0x4152, SWITCHTEC_GEN4),  //PSX 52XG4
<------>SWITCHTEC_PCI_DEVICE(0x4136, SWITCHTEC_GEN4),  //PSX 36XG4
<------>SWITCHTEC_PCI_DEVICE(0x4128, SWITCHTEC_GEN4),  //PSX 28XG4
<------>SWITCHTEC_PCI_DEVICE(0x4200, SWITCHTEC_GEN4),  //PAX 100XG4
<------>SWITCHTEC_PCI_DEVICE(0x4284, SWITCHTEC_GEN4),  //PAX 84XG4
<------>SWITCHTEC_PCI_DEVICE(0x4268, SWITCHTEC_GEN4),  //PAX 68XG4
<------>SWITCHTEC_PCI_DEVICE(0x4252, SWITCHTEC_GEN4),  //PAX 52XG4
<------>SWITCHTEC_PCI_DEVICE(0x4236, SWITCHTEC_GEN4),  //PAX 36XG4
<------>SWITCHTEC_PCI_DEVICE(0x4228, SWITCHTEC_GEN4),  //PAX 28XG4
<------>{0}
};
MODULE_DEVICE_TABLE(pci, switchtec_pci_tbl);
 
static struct pci_driver switchtec_pci_driver = {
<------>.name		= KBUILD_MODNAME,
<------>.id_table	= switchtec_pci_tbl,
<------>.probe		= switchtec_pci_probe,
<------>.remove		= switchtec_pci_remove,
};
 
static int __init switchtec_init(void)
{
<------>int rc;
 
<------>rc = alloc_chrdev_region(&switchtec_devt, 0, max_devices,
<------><------><------><------> "switchtec");
<------>if (rc)
<------><------>return rc;
 
<------>switchtec_class = class_create(THIS_MODULE, "switchtec");
<------>if (IS_ERR(switchtec_class)) {
<------><------>rc = PTR_ERR(switchtec_class);
<------><------>goto err_create_class;
<------>}
 
<------>rc = pci_register_driver(&switchtec_pci_driver);
<------>if (rc)
<------><------>goto err_pci_register;
 
<------>pr_info(KBUILD_MODNAME ": loaded.\n");
 
<------>return 0;
 
err_pci_register:
<------>class_destroy(switchtec_class);
 
err_create_class:
<------>unregister_chrdev_region(switchtec_devt, max_devices);
 
<------>return rc;
}
module_init(switchtec_init);
 
static void __exit switchtec_exit(void)
{
<------>pci_unregister_driver(&switchtec_pci_driver);
<------>class_destroy(switchtec_class);
<------>unregister_chrdev_region(switchtec_devt, max_devices);
<------>ida_destroy(&switchtec_minor_ida);
 
<------>pr_info(KBUILD_MODNAME ": unloaded.\n");
}
module_exit(switchtec_exit);