2 * Microsemi Switchtec(tm) PCIe Management Driver
3 * Copyright (c) 2017, Microsemi Corporation
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 #include <linux/switchtec_ioctl.h>
18 #include <linux/interrupt.h>
19 #include <linux/module.h>
21 #include <linux/uaccess.h>
22 #include <linux/poll.h>
23 #include <linux/pci.h>
24 #include <linux/cdev.h>
25 #include <linux/wait.h>
27 MODULE_DESCRIPTION("Microsemi Switchtec(tm) PCIe Management Driver");
28 MODULE_VERSION("0.1");
29 MODULE_LICENSE("GPL");
30 MODULE_AUTHOR("Microsemi Corporation");
32 static int max_devices
= 16;
33 module_param(max_devices
, int, 0644);
34 MODULE_PARM_DESC(max_devices
, "max number of switchtec device instances");
36 static dev_t switchtec_devt
;
37 static struct class *switchtec_class
;
38 static DEFINE_IDA(switchtec_minor_ida
);
40 #define MICROSEMI_VENDOR_ID 0x11f8
41 #define MICROSEMI_NTB_CLASSCODE 0x068000
42 #define MICROSEMI_MGMT_CLASSCODE 0x058000
44 #define SWITCHTEC_MRPC_PAYLOAD_SIZE 1024
45 #define SWITCHTEC_MAX_PFF_CSR 48
47 #define SWITCHTEC_EVENT_OCCURRED BIT(0)
48 #define SWITCHTEC_EVENT_CLEAR BIT(0)
49 #define SWITCHTEC_EVENT_EN_LOG BIT(1)
50 #define SWITCHTEC_EVENT_EN_CLI BIT(2)
51 #define SWITCHTEC_EVENT_EN_IRQ BIT(3)
52 #define SWITCHTEC_EVENT_FATAL BIT(4)
55 SWITCHTEC_GAS_MRPC_OFFSET
= 0x0000,
56 SWITCHTEC_GAS_TOP_CFG_OFFSET
= 0x1000,
57 SWITCHTEC_GAS_SW_EVENT_OFFSET
= 0x1800,
58 SWITCHTEC_GAS_SYS_INFO_OFFSET
= 0x2000,
59 SWITCHTEC_GAS_FLASH_INFO_OFFSET
= 0x2200,
60 SWITCHTEC_GAS_PART_CFG_OFFSET
= 0x4000,
61 SWITCHTEC_GAS_NTB_OFFSET
= 0x10000,
62 SWITCHTEC_GAS_PFF_CSR_OFFSET
= 0x134000,
66 u8 input_data
[SWITCHTEC_MRPC_PAYLOAD_SIZE
];
67 u8 output_data
[SWITCHTEC_MRPC_PAYLOAD_SIZE
];
74 SWITCHTEC_MRPC_STATUS_INPROGRESS
= 1,
75 SWITCHTEC_MRPC_STATUS_DONE
= 2,
76 SWITCHTEC_MRPC_STATUS_ERROR
= 0xFF,
77 SWITCHTEC_MRPC_STATUS_INTERRUPTED
= 0x100,
80 struct sw_event_regs
{
81 u64 event_report_ctrl
;
83 u64 part_event_bitmap
;
87 u32 stack_error_event_hdr
;
88 u32 stack_error_event_data
;
90 u32 ppu_error_event_hdr
;
91 u32 ppu_error_event_data
;
93 u32 isp_error_event_hdr
;
94 u32 isp_error_event_data
;
96 u32 sys_reset_event_hdr
;
102 u32 fw_non_fatal_hdr
;
106 u32 twi_mrpc_comp_hdr
;
107 u32 twi_mrpc_comp_data
;
109 u32 twi_mrpc_comp_async_hdr
;
110 u32 twi_mrpc_comp_async_data
;
112 u32 cli_mrpc_comp_hdr
;
113 u32 cli_mrpc_comp_data
;
115 u32 cli_mrpc_comp_async_hdr
;
116 u32 cli_mrpc_comp_async_data
;
118 u32 gpio_interrupt_hdr
;
119 u32 gpio_interrupt_data
;
123 struct sys_info_regs
{
126 u32 firmware_version
;
128 u32 vendor_table_revision
;
129 u32 table_format_version
;
131 u32 cfg_file_fmt_version
;
135 char product_revision
[4];
136 char component_vendor
[8];
138 u8 component_revision
;
141 struct flash_info_regs
{
142 u32 flash_part_map_upd_idx
;
144 struct active_partition_info
{
150 struct active_partition_info active_cfg
;
151 struct active_partition_info inactive_img
;
152 struct active_partition_info inactive_cfg
;
156 struct partition_info
{
161 struct partition_info cfg1
;
162 struct partition_info img0
;
163 struct partition_info img1
;
164 struct partition_info nvlog
;
165 struct partition_info vendor
[8];
168 struct ntb_info_regs
{
176 struct part_cfg_regs
{
183 u32 dsp_pff_inst_id
[47];
185 u16 vep_vector_number
;
186 u16 usp_vector_number
;
187 u32 port_event_bitmap
;
189 u32 part_event_summary
;
192 u32 part_reset_data
[5];
194 u32 mrpc_comp_data
[5];
195 u32 mrpc_comp_async_hdr
;
196 u32 mrpc_comp_async_data
[5];
198 u32 dyn_binding_data
[5];
203 SWITCHTEC_PART_CFG_EVENT_RESET
= 1 << 0,
204 SWITCHTEC_PART_CFG_EVENT_MRPC_CMP
= 1 << 1,
205 SWITCHTEC_PART_CFG_EVENT_MRPC_ASYNC_CMP
= 1 << 2,
206 SWITCHTEC_PART_CFG_EVENT_DYN_PART_CMP
= 1 << 3,
209 struct pff_csr_regs
{
212 u32 pci_cfg_header
[15];
213 u32 pci_cap_region
[48];
214 u32 pcie_cap_region
[448];
215 u32 indirect_gas_window
[128];
216 u32 indirect_gas_window_off
;
218 u32 pff_event_summary
;
221 u32 aer_in_p2p_data
[5];
223 u32 aer_in_vep_data
[5];
234 u32 threshold_data
[5];
236 u32 power_mgmt_data
[5];
237 u32 tlp_throttling_hdr
;
238 u32 tlp_throttling_data
[5];
240 u32 force_speed_data
[5];
241 u32 credit_timeout_hdr
;
242 u32 credit_timeout_data
[5];
244 u32 link_state_data
[5];
248 struct switchtec_dev
{
249 struct pci_dev
*pdev
;
256 char pff_local
[SWITCHTEC_MAX_PFF_CSR
];
259 struct mrpc_regs __iomem
*mmio_mrpc
;
260 struct sw_event_regs __iomem
*mmio_sw_event
;
261 struct sys_info_regs __iomem
*mmio_sys_info
;
262 struct flash_info_regs __iomem
*mmio_flash_info
;
263 struct ntb_info_regs __iomem
*mmio_ntb
;
264 struct part_cfg_regs __iomem
*mmio_part_cfg
;
265 struct part_cfg_regs __iomem
*mmio_part_cfg_all
;
266 struct pff_csr_regs __iomem
*mmio_pff_csr
;
269 * The mrpc mutex must be held when accessing the other
270 * mrpc_ fields, alive flag and stuser->state field
272 struct mutex mrpc_mutex
;
273 struct list_head mrpc_queue
;
275 struct work_struct mrpc_work
;
276 struct delayed_work mrpc_timeout
;
279 wait_queue_head_t event_wq
;
283 static struct switchtec_dev
*to_stdev(struct device
*dev
)
285 return container_of(dev
, struct switchtec_dev
, dev
);
295 struct switchtec_user
{
296 struct switchtec_dev
*stdev
;
298 enum mrpc_state state
;
300 struct completion comp
;
302 struct list_head list
;
309 unsigned char data
[SWITCHTEC_MRPC_PAYLOAD_SIZE
];
313 static struct switchtec_user
*stuser_create(struct switchtec_dev
*stdev
)
315 struct switchtec_user
*stuser
;
317 stuser
= kzalloc(sizeof(*stuser
), GFP_KERNEL
);
319 return ERR_PTR(-ENOMEM
);
321 get_device(&stdev
->dev
);
322 stuser
->stdev
= stdev
;
323 kref_init(&stuser
->kref
);
324 INIT_LIST_HEAD(&stuser
->list
);
325 init_completion(&stuser
->comp
);
326 stuser
->event_cnt
= atomic_read(&stdev
->event_cnt
);
328 dev_dbg(&stdev
->dev
, "%s: %p\n", __func__
, stuser
);
333 static void stuser_free(struct kref
*kref
)
335 struct switchtec_user
*stuser
;
337 stuser
= container_of(kref
, struct switchtec_user
, kref
);
339 dev_dbg(&stuser
->stdev
->dev
, "%s: %p\n", __func__
, stuser
);
341 put_device(&stuser
->stdev
->dev
);
345 static void stuser_put(struct switchtec_user
*stuser
)
347 kref_put(&stuser
->kref
, stuser_free
);
350 static void stuser_set_state(struct switchtec_user
*stuser
,
351 enum mrpc_state state
)
353 /* requires the mrpc_mutex to already be held when called */
355 const char * const state_names
[] = {
356 [MRPC_IDLE
] = "IDLE",
357 [MRPC_QUEUED
] = "QUEUED",
358 [MRPC_RUNNING
] = "RUNNING",
359 [MRPC_DONE
] = "DONE",
362 stuser
->state
= state
;
364 dev_dbg(&stuser
->stdev
->dev
, "stuser state %p -> %s",
365 stuser
, state_names
[state
]);
368 static void mrpc_complete_cmd(struct switchtec_dev
*stdev
);
370 static void mrpc_cmd_submit(struct switchtec_dev
*stdev
)
372 /* requires the mrpc_mutex to already be held when called */
374 struct switchtec_user
*stuser
;
376 if (stdev
->mrpc_busy
)
379 if (list_empty(&stdev
->mrpc_queue
))
382 stuser
= list_entry(stdev
->mrpc_queue
.next
, struct switchtec_user
,
385 stuser_set_state(stuser
, MRPC_RUNNING
);
386 stdev
->mrpc_busy
= 1;
387 memcpy_toio(&stdev
->mmio_mrpc
->input_data
,
388 stuser
->data
, stuser
->data_len
);
389 iowrite32(stuser
->cmd
, &stdev
->mmio_mrpc
->cmd
);
391 stuser
->status
= ioread32(&stdev
->mmio_mrpc
->status
);
392 if (stuser
->status
!= SWITCHTEC_MRPC_STATUS_INPROGRESS
)
393 mrpc_complete_cmd(stdev
);
395 schedule_delayed_work(&stdev
->mrpc_timeout
,
396 msecs_to_jiffies(500));
399 static int mrpc_queue_cmd(struct switchtec_user
*stuser
)
401 /* requires the mrpc_mutex to already be held when called */
403 struct switchtec_dev
*stdev
= stuser
->stdev
;
405 kref_get(&stuser
->kref
);
406 stuser
->read_len
= sizeof(stuser
->data
);
407 stuser_set_state(stuser
, MRPC_QUEUED
);
408 init_completion(&stuser
->comp
);
409 list_add_tail(&stuser
->list
, &stdev
->mrpc_queue
);
411 mrpc_cmd_submit(stdev
);
416 static void mrpc_complete_cmd(struct switchtec_dev
*stdev
)
418 /* requires the mrpc_mutex to already be held when called */
419 struct switchtec_user
*stuser
;
421 if (list_empty(&stdev
->mrpc_queue
))
424 stuser
= list_entry(stdev
->mrpc_queue
.next
, struct switchtec_user
,
427 stuser
->status
= ioread32(&stdev
->mmio_mrpc
->status
);
428 if (stuser
->status
== SWITCHTEC_MRPC_STATUS_INPROGRESS
)
431 stuser_set_state(stuser
, MRPC_DONE
);
432 stuser
->return_code
= 0;
434 if (stuser
->status
!= SWITCHTEC_MRPC_STATUS_DONE
)
437 stuser
->return_code
= ioread32(&stdev
->mmio_mrpc
->ret_value
);
438 if (stuser
->return_code
!= 0)
441 memcpy_fromio(stuser
->data
, &stdev
->mmio_mrpc
->output_data
,
445 complete_all(&stuser
->comp
);
446 list_del_init(&stuser
->list
);
448 stdev
->mrpc_busy
= 0;
450 mrpc_cmd_submit(stdev
);
453 static void mrpc_event_work(struct work_struct
*work
)
455 struct switchtec_dev
*stdev
;
457 stdev
= container_of(work
, struct switchtec_dev
, mrpc_work
);
459 dev_dbg(&stdev
->dev
, "%s\n", __func__
);
461 mutex_lock(&stdev
->mrpc_mutex
);
462 cancel_delayed_work(&stdev
->mrpc_timeout
);
463 mrpc_complete_cmd(stdev
);
464 mutex_unlock(&stdev
->mrpc_mutex
);
467 static void mrpc_timeout_work(struct work_struct
*work
)
469 struct switchtec_dev
*stdev
;
472 stdev
= container_of(work
, struct switchtec_dev
, mrpc_timeout
.work
);
474 dev_dbg(&stdev
->dev
, "%s\n", __func__
);
476 mutex_lock(&stdev
->mrpc_mutex
);
478 status
= ioread32(&stdev
->mmio_mrpc
->status
);
479 if (status
== SWITCHTEC_MRPC_STATUS_INPROGRESS
) {
480 schedule_delayed_work(&stdev
->mrpc_timeout
,
481 msecs_to_jiffies(500));
485 mrpc_complete_cmd(stdev
);
488 mutex_unlock(&stdev
->mrpc_mutex
);
491 static ssize_t
device_version_show(struct device
*dev
,
492 struct device_attribute
*attr
, char *buf
)
494 struct switchtec_dev
*stdev
= to_stdev(dev
);
497 ver
= ioread32(&stdev
->mmio_sys_info
->device_version
);
499 return sprintf(buf
, "%x\n", ver
);
501 static DEVICE_ATTR_RO(device_version
);
503 static ssize_t
fw_version_show(struct device
*dev
,
504 struct device_attribute
*attr
, char *buf
)
506 struct switchtec_dev
*stdev
= to_stdev(dev
);
509 ver
= ioread32(&stdev
->mmio_sys_info
->firmware_version
);
511 return sprintf(buf
, "%08x\n", ver
);
513 static DEVICE_ATTR_RO(fw_version
);
515 static ssize_t
io_string_show(char *buf
, void __iomem
*attr
, size_t len
)
519 memcpy_fromio(buf
, attr
, len
);
523 for (i
= len
- 1; i
> 0; i
--) {
533 #define DEVICE_ATTR_SYS_INFO_STR(field) \
534 static ssize_t field ## _show(struct device *dev, \
535 struct device_attribute *attr, char *buf) \
537 struct switchtec_dev *stdev = to_stdev(dev); \
538 return io_string_show(buf, &stdev->mmio_sys_info->field, \
539 sizeof(stdev->mmio_sys_info->field)); \
542 static DEVICE_ATTR_RO(field)
544 DEVICE_ATTR_SYS_INFO_STR(vendor_id
);
545 DEVICE_ATTR_SYS_INFO_STR(product_id
);
546 DEVICE_ATTR_SYS_INFO_STR(product_revision
);
547 DEVICE_ATTR_SYS_INFO_STR(component_vendor
);
549 static ssize_t
component_id_show(struct device
*dev
,
550 struct device_attribute
*attr
, char *buf
)
552 struct switchtec_dev
*stdev
= to_stdev(dev
);
553 int id
= ioread16(&stdev
->mmio_sys_info
->component_id
);
555 return sprintf(buf
, "PM%04X\n", id
);
557 static DEVICE_ATTR_RO(component_id
);
559 static ssize_t
component_revision_show(struct device
*dev
,
560 struct device_attribute
*attr
, char *buf
)
562 struct switchtec_dev
*stdev
= to_stdev(dev
);
563 int rev
= ioread8(&stdev
->mmio_sys_info
->component_revision
);
565 return sprintf(buf
, "%d\n", rev
);
567 static DEVICE_ATTR_RO(component_revision
);
569 static ssize_t
partition_show(struct device
*dev
,
570 struct device_attribute
*attr
, char *buf
)
572 struct switchtec_dev
*stdev
= to_stdev(dev
);
574 return sprintf(buf
, "%d\n", stdev
->partition
);
576 static DEVICE_ATTR_RO(partition
);
578 static ssize_t
partition_count_show(struct device
*dev
,
579 struct device_attribute
*attr
, char *buf
)
581 struct switchtec_dev
*stdev
= to_stdev(dev
);
583 return sprintf(buf
, "%d\n", stdev
->partition_count
);
585 static DEVICE_ATTR_RO(partition_count
);
587 static struct attribute
*switchtec_device_attrs
[] = {
588 &dev_attr_device_version
.attr
,
589 &dev_attr_fw_version
.attr
,
590 &dev_attr_vendor_id
.attr
,
591 &dev_attr_product_id
.attr
,
592 &dev_attr_product_revision
.attr
,
593 &dev_attr_component_vendor
.attr
,
594 &dev_attr_component_id
.attr
,
595 &dev_attr_component_revision
.attr
,
596 &dev_attr_partition
.attr
,
597 &dev_attr_partition_count
.attr
,
601 ATTRIBUTE_GROUPS(switchtec_device
);
603 static int switchtec_dev_open(struct inode
*inode
, struct file
*filp
)
605 struct switchtec_dev
*stdev
;
606 struct switchtec_user
*stuser
;
608 stdev
= container_of(inode
->i_cdev
, struct switchtec_dev
, cdev
);
610 stuser
= stuser_create(stdev
);
612 return PTR_ERR(stuser
);
614 filp
->private_data
= stuser
;
615 nonseekable_open(inode
, filp
);
617 dev_dbg(&stdev
->dev
, "%s: %p\n", __func__
, stuser
);
622 static int switchtec_dev_release(struct inode
*inode
, struct file
*filp
)
624 struct switchtec_user
*stuser
= filp
->private_data
;
631 static int lock_mutex_and_test_alive(struct switchtec_dev
*stdev
)
633 if (mutex_lock_interruptible(&stdev
->mrpc_mutex
))
637 mutex_unlock(&stdev
->mrpc_mutex
);
644 static ssize_t
switchtec_dev_write(struct file
*filp
, const char __user
*data
,
645 size_t size
, loff_t
*off
)
647 struct switchtec_user
*stuser
= filp
->private_data
;
648 struct switchtec_dev
*stdev
= stuser
->stdev
;
651 if (size
< sizeof(stuser
->cmd
) ||
652 size
> sizeof(stuser
->cmd
) + sizeof(stuser
->data
))
655 stuser
->data_len
= size
- sizeof(stuser
->cmd
);
657 rc
= lock_mutex_and_test_alive(stdev
);
661 if (stuser
->state
!= MRPC_IDLE
) {
666 rc
= copy_from_user(&stuser
->cmd
, data
, sizeof(stuser
->cmd
));
672 data
+= sizeof(stuser
->cmd
);
673 rc
= copy_from_user(&stuser
->data
, data
, size
- sizeof(stuser
->cmd
));
679 rc
= mrpc_queue_cmd(stuser
);
682 mutex_unlock(&stdev
->mrpc_mutex
);
690 static ssize_t
switchtec_dev_read(struct file
*filp
, char __user
*data
,
691 size_t size
, loff_t
*off
)
693 struct switchtec_user
*stuser
= filp
->private_data
;
694 struct switchtec_dev
*stdev
= stuser
->stdev
;
697 if (size
< sizeof(stuser
->cmd
) ||
698 size
> sizeof(stuser
->cmd
) + sizeof(stuser
->data
))
701 rc
= lock_mutex_and_test_alive(stdev
);
705 if (stuser
->state
== MRPC_IDLE
) {
706 mutex_unlock(&stdev
->mrpc_mutex
);
710 stuser
->read_len
= size
- sizeof(stuser
->return_code
);
712 mutex_unlock(&stdev
->mrpc_mutex
);
714 if (filp
->f_flags
& O_NONBLOCK
) {
715 if (!try_wait_for_completion(&stuser
->comp
))
718 rc
= wait_for_completion_interruptible(&stuser
->comp
);
723 rc
= lock_mutex_and_test_alive(stdev
);
727 if (stuser
->state
!= MRPC_DONE
) {
728 mutex_unlock(&stdev
->mrpc_mutex
);
732 rc
= copy_to_user(data
, &stuser
->return_code
,
733 sizeof(stuser
->return_code
));
739 data
+= sizeof(stuser
->return_code
);
740 rc
= copy_to_user(data
, &stuser
->data
,
741 size
- sizeof(stuser
->return_code
));
747 stuser_set_state(stuser
, MRPC_IDLE
);
750 mutex_unlock(&stdev
->mrpc_mutex
);
752 if (stuser
->status
== SWITCHTEC_MRPC_STATUS_DONE
)
754 else if (stuser
->status
== SWITCHTEC_MRPC_STATUS_INTERRUPTED
)
760 static unsigned int switchtec_dev_poll(struct file
*filp
, poll_table
*wait
)
762 struct switchtec_user
*stuser
= filp
->private_data
;
763 struct switchtec_dev
*stdev
= stuser
->stdev
;
766 poll_wait(filp
, &stuser
->comp
.wait
, wait
);
767 poll_wait(filp
, &stdev
->event_wq
, wait
);
769 if (lock_mutex_and_test_alive(stdev
))
770 return POLLIN
| POLLRDHUP
| POLLOUT
| POLLERR
| POLLHUP
;
772 mutex_unlock(&stdev
->mrpc_mutex
);
774 if (try_wait_for_completion(&stuser
->comp
))
775 ret
|= POLLIN
| POLLRDNORM
;
777 if (stuser
->event_cnt
!= atomic_read(&stdev
->event_cnt
))
778 ret
|= POLLPRI
| POLLRDBAND
;
783 static int ioctl_flash_info(struct switchtec_dev
*stdev
,
784 struct switchtec_ioctl_flash_info __user
*uinfo
)
786 struct switchtec_ioctl_flash_info info
= {0};
787 struct flash_info_regs __iomem
*fi
= stdev
->mmio_flash_info
;
789 info
.flash_length
= ioread32(&fi
->flash_length
);
790 info
.num_partitions
= SWITCHTEC_IOCTL_NUM_PARTITIONS
;
792 if (copy_to_user(uinfo
, &info
, sizeof(info
)))
798 static void set_fw_info_part(struct switchtec_ioctl_flash_part_info
*info
,
799 struct partition_info __iomem
*pi
)
801 info
->address
= ioread32(&pi
->address
);
802 info
->length
= ioread32(&pi
->length
);
805 static int ioctl_flash_part_info(struct switchtec_dev
*stdev
,
806 struct switchtec_ioctl_flash_part_info __user
*uinfo
)
808 struct switchtec_ioctl_flash_part_info info
= {0};
809 struct flash_info_regs __iomem
*fi
= stdev
->mmio_flash_info
;
810 u32 active_addr
= -1;
812 if (copy_from_user(&info
, uinfo
, sizeof(info
)))
815 switch (info
.flash_partition
) {
816 case SWITCHTEC_IOCTL_PART_CFG0
:
817 active_addr
= ioread32(&fi
->active_cfg
);
818 set_fw_info_part(&info
, &fi
->cfg0
);
820 case SWITCHTEC_IOCTL_PART_CFG1
:
821 active_addr
= ioread32(&fi
->active_cfg
);
822 set_fw_info_part(&info
, &fi
->cfg1
);
824 case SWITCHTEC_IOCTL_PART_IMG0
:
825 active_addr
= ioread32(&fi
->active_img
);
826 set_fw_info_part(&info
, &fi
->img0
);
828 case SWITCHTEC_IOCTL_PART_IMG1
:
829 active_addr
= ioread32(&fi
->active_img
);
830 set_fw_info_part(&info
, &fi
->img1
);
832 case SWITCHTEC_IOCTL_PART_NVLOG
:
833 set_fw_info_part(&info
, &fi
->nvlog
);
835 case SWITCHTEC_IOCTL_PART_VENDOR0
:
836 set_fw_info_part(&info
, &fi
->vendor
[0]);
838 case SWITCHTEC_IOCTL_PART_VENDOR1
:
839 set_fw_info_part(&info
, &fi
->vendor
[1]);
841 case SWITCHTEC_IOCTL_PART_VENDOR2
:
842 set_fw_info_part(&info
, &fi
->vendor
[2]);
844 case SWITCHTEC_IOCTL_PART_VENDOR3
:
845 set_fw_info_part(&info
, &fi
->vendor
[3]);
847 case SWITCHTEC_IOCTL_PART_VENDOR4
:
848 set_fw_info_part(&info
, &fi
->vendor
[4]);
850 case SWITCHTEC_IOCTL_PART_VENDOR5
:
851 set_fw_info_part(&info
, &fi
->vendor
[5]);
853 case SWITCHTEC_IOCTL_PART_VENDOR6
:
854 set_fw_info_part(&info
, &fi
->vendor
[6]);
856 case SWITCHTEC_IOCTL_PART_VENDOR7
:
857 set_fw_info_part(&info
, &fi
->vendor
[7]);
863 if (info
.address
== active_addr
)
866 if (copy_to_user(uinfo
, &info
, sizeof(info
)))
872 static int ioctl_event_summary(struct switchtec_dev
*stdev
,
873 struct switchtec_user
*stuser
,
874 struct switchtec_ioctl_event_summary __user
*usum
)
876 struct switchtec_ioctl_event_summary s
= {0};
880 s
.global
= ioread32(&stdev
->mmio_sw_event
->global_summary
);
881 s
.part_bitmap
= ioread32(&stdev
->mmio_sw_event
->part_event_bitmap
);
882 s
.local_part
= ioread32(&stdev
->mmio_part_cfg
->part_event_summary
);
884 for (i
= 0; i
< stdev
->partition_count
; i
++) {
885 reg
= ioread32(&stdev
->mmio_part_cfg_all
[i
].part_event_summary
);
889 for (i
= 0; i
< SWITCHTEC_MAX_PFF_CSR
; i
++) {
890 reg
= ioread16(&stdev
->mmio_pff_csr
[i
].vendor_id
);
891 if (reg
!= MICROSEMI_VENDOR_ID
)
894 reg
= ioread32(&stdev
->mmio_pff_csr
[i
].pff_event_summary
);
898 if (copy_to_user(usum
, &s
, sizeof(s
)))
901 stuser
->event_cnt
= atomic_read(&stdev
->event_cnt
);
906 static u32 __iomem
*global_ev_reg(struct switchtec_dev
*stdev
,
907 size_t offset
, int index
)
909 return (void __iomem
*)stdev
->mmio_sw_event
+ offset
;
912 static u32 __iomem
*part_ev_reg(struct switchtec_dev
*stdev
,
913 size_t offset
, int index
)
915 return (void __iomem
*)&stdev
->mmio_part_cfg_all
[index
] + offset
;
918 static u32 __iomem
*pff_ev_reg(struct switchtec_dev
*stdev
,
919 size_t offset
, int index
)
921 return (void __iomem
*)&stdev
->mmio_pff_csr
[index
] + offset
;
924 #define EV_GLB(i, r)[i] = {offsetof(struct sw_event_regs, r), global_ev_reg}
925 #define EV_PAR(i, r)[i] = {offsetof(struct part_cfg_regs, r), part_ev_reg}
926 #define EV_PFF(i, r)[i] = {offsetof(struct pff_csr_regs, r), pff_ev_reg}
928 const struct event_reg
{
930 u32 __iomem
*(*map_reg
)(struct switchtec_dev
*stdev
,
931 size_t offset
, int index
);
933 EV_GLB(SWITCHTEC_IOCTL_EVENT_STACK_ERROR
, stack_error_event_hdr
),
934 EV_GLB(SWITCHTEC_IOCTL_EVENT_PPU_ERROR
, ppu_error_event_hdr
),
935 EV_GLB(SWITCHTEC_IOCTL_EVENT_ISP_ERROR
, isp_error_event_hdr
),
936 EV_GLB(SWITCHTEC_IOCTL_EVENT_SYS_RESET
, sys_reset_event_hdr
),
937 EV_GLB(SWITCHTEC_IOCTL_EVENT_FW_EXC
, fw_exception_hdr
),
938 EV_GLB(SWITCHTEC_IOCTL_EVENT_FW_NMI
, fw_nmi_hdr
),
939 EV_GLB(SWITCHTEC_IOCTL_EVENT_FW_NON_FATAL
, fw_non_fatal_hdr
),
940 EV_GLB(SWITCHTEC_IOCTL_EVENT_FW_FATAL
, fw_fatal_hdr
),
941 EV_GLB(SWITCHTEC_IOCTL_EVENT_TWI_MRPC_COMP
, twi_mrpc_comp_hdr
),
942 EV_GLB(SWITCHTEC_IOCTL_EVENT_TWI_MRPC_COMP_ASYNC
,
943 twi_mrpc_comp_async_hdr
),
944 EV_GLB(SWITCHTEC_IOCTL_EVENT_CLI_MRPC_COMP
, cli_mrpc_comp_hdr
),
945 EV_GLB(SWITCHTEC_IOCTL_EVENT_CLI_MRPC_COMP_ASYNC
,
946 cli_mrpc_comp_async_hdr
),
947 EV_GLB(SWITCHTEC_IOCTL_EVENT_GPIO_INT
, gpio_interrupt_hdr
),
948 EV_PAR(SWITCHTEC_IOCTL_EVENT_PART_RESET
, part_reset_hdr
),
949 EV_PAR(SWITCHTEC_IOCTL_EVENT_MRPC_COMP
, mrpc_comp_hdr
),
950 EV_PAR(SWITCHTEC_IOCTL_EVENT_MRPC_COMP_ASYNC
, mrpc_comp_async_hdr
),
951 EV_PAR(SWITCHTEC_IOCTL_EVENT_DYN_PART_BIND_COMP
, dyn_binding_hdr
),
952 EV_PFF(SWITCHTEC_IOCTL_EVENT_AER_IN_P2P
, aer_in_p2p_hdr
),
953 EV_PFF(SWITCHTEC_IOCTL_EVENT_AER_IN_VEP
, aer_in_vep_hdr
),
954 EV_PFF(SWITCHTEC_IOCTL_EVENT_DPC
, dpc_hdr
),
955 EV_PFF(SWITCHTEC_IOCTL_EVENT_CTS
, cts_hdr
),
956 EV_PFF(SWITCHTEC_IOCTL_EVENT_HOTPLUG
, hotplug_hdr
),
957 EV_PFF(SWITCHTEC_IOCTL_EVENT_IER
, ier_hdr
),
958 EV_PFF(SWITCHTEC_IOCTL_EVENT_THRESH
, threshold_hdr
),
959 EV_PFF(SWITCHTEC_IOCTL_EVENT_POWER_MGMT
, power_mgmt_hdr
),
960 EV_PFF(SWITCHTEC_IOCTL_EVENT_TLP_THROTTLING
, tlp_throttling_hdr
),
961 EV_PFF(SWITCHTEC_IOCTL_EVENT_FORCE_SPEED
, force_speed_hdr
),
962 EV_PFF(SWITCHTEC_IOCTL_EVENT_CREDIT_TIMEOUT
, credit_timeout_hdr
),
963 EV_PFF(SWITCHTEC_IOCTL_EVENT_LINK_STATE
, link_state_hdr
),
966 static u32 __iomem
*event_hdr_addr(struct switchtec_dev
*stdev
,
967 int event_id
, int index
)
971 if (event_id
< 0 || event_id
>= SWITCHTEC_IOCTL_MAX_EVENTS
)
972 return ERR_PTR(-EINVAL
);
974 off
= event_regs
[event_id
].offset
;
976 if (event_regs
[event_id
].map_reg
== part_ev_reg
) {
977 if (index
== SWITCHTEC_IOCTL_EVENT_LOCAL_PART_IDX
)
978 index
= stdev
->partition
;
979 else if (index
< 0 || index
>= stdev
->partition_count
)
980 return ERR_PTR(-EINVAL
);
981 } else if (event_regs
[event_id
].map_reg
== pff_ev_reg
) {
982 if (index
< 0 || index
>= stdev
->pff_csr_count
)
983 return ERR_PTR(-EINVAL
);
986 return event_regs
[event_id
].map_reg(stdev
, off
, index
);
989 static int event_ctl(struct switchtec_dev
*stdev
,
990 struct switchtec_ioctl_event_ctl
*ctl
)
996 reg
= event_hdr_addr(stdev
, ctl
->event_id
, ctl
->index
);
1000 hdr
= ioread32(reg
);
1001 for (i
= 0; i
< ARRAY_SIZE(ctl
->data
); i
++)
1002 ctl
->data
[i
] = ioread32(®
[i
+ 1]);
1004 ctl
->occurred
= hdr
& SWITCHTEC_EVENT_OCCURRED
;
1005 ctl
->count
= (hdr
>> 5) & 0xFF;
1007 if (!(ctl
->flags
& SWITCHTEC_IOCTL_EVENT_FLAG_CLEAR
))
1008 hdr
&= ~SWITCHTEC_EVENT_CLEAR
;
1009 if (ctl
->flags
& SWITCHTEC_IOCTL_EVENT_FLAG_EN_POLL
)
1010 hdr
|= SWITCHTEC_EVENT_EN_IRQ
;
1011 if (ctl
->flags
& SWITCHTEC_IOCTL_EVENT_FLAG_DIS_POLL
)
1012 hdr
&= ~SWITCHTEC_EVENT_EN_IRQ
;
1013 if (ctl
->flags
& SWITCHTEC_IOCTL_EVENT_FLAG_EN_LOG
)
1014 hdr
|= SWITCHTEC_EVENT_EN_LOG
;
1015 if (ctl
->flags
& SWITCHTEC_IOCTL_EVENT_FLAG_DIS_LOG
)
1016 hdr
&= ~SWITCHTEC_EVENT_EN_LOG
;
1017 if (ctl
->flags
& SWITCHTEC_IOCTL_EVENT_FLAG_EN_CLI
)
1018 hdr
|= SWITCHTEC_EVENT_EN_CLI
;
1019 if (ctl
->flags
& SWITCHTEC_IOCTL_EVENT_FLAG_DIS_CLI
)
1020 hdr
&= ~SWITCHTEC_EVENT_EN_CLI
;
1021 if (ctl
->flags
& SWITCHTEC_IOCTL_EVENT_FLAG_EN_FATAL
)
1022 hdr
|= SWITCHTEC_EVENT_FATAL
;
1023 if (ctl
->flags
& SWITCHTEC_IOCTL_EVENT_FLAG_DIS_FATAL
)
1024 hdr
&= ~SWITCHTEC_EVENT_FATAL
;
1027 iowrite32(hdr
, reg
);
1030 if (hdr
& SWITCHTEC_EVENT_EN_IRQ
)
1031 ctl
->flags
|= SWITCHTEC_IOCTL_EVENT_FLAG_EN_POLL
;
1032 if (hdr
& SWITCHTEC_EVENT_EN_LOG
)
1033 ctl
->flags
|= SWITCHTEC_IOCTL_EVENT_FLAG_EN_LOG
;
1034 if (hdr
& SWITCHTEC_EVENT_EN_CLI
)
1035 ctl
->flags
|= SWITCHTEC_IOCTL_EVENT_FLAG_EN_CLI
;
1036 if (hdr
& SWITCHTEC_EVENT_FATAL
)
1037 ctl
->flags
|= SWITCHTEC_IOCTL_EVENT_FLAG_EN_FATAL
;
1042 static int ioctl_event_ctl(struct switchtec_dev
*stdev
,
1043 struct switchtec_ioctl_event_ctl __user
*uctl
)
1047 struct switchtec_ioctl_event_ctl ctl
;
1049 if (copy_from_user(&ctl
, uctl
, sizeof(ctl
)))
1052 if (ctl
.event_id
>= SWITCHTEC_IOCTL_MAX_EVENTS
)
1055 if (ctl
.flags
& SWITCHTEC_IOCTL_EVENT_FLAG_UNUSED
)
1058 if (ctl
.index
== SWITCHTEC_IOCTL_EVENT_IDX_ALL
) {
1059 if (event_regs
[ctl
.event_id
].map_reg
== global_ev_reg
)
1061 else if (event_regs
[ctl
.event_id
].map_reg
== part_ev_reg
)
1062 nr_idxs
= stdev
->partition_count
;
1063 else if (event_regs
[ctl
.event_id
].map_reg
== pff_ev_reg
)
1064 nr_idxs
= stdev
->pff_csr_count
;
1068 for (ctl
.index
= 0; ctl
.index
< nr_idxs
; ctl
.index
++) {
1069 ret
= event_ctl(stdev
, &ctl
);
1074 ret
= event_ctl(stdev
, &ctl
);
1079 if (copy_to_user(uctl
, &ctl
, sizeof(ctl
)))
1085 static int ioctl_pff_to_port(struct switchtec_dev
*stdev
,
1086 struct switchtec_ioctl_pff_port
*up
)
1090 struct part_cfg_regs
*pcfg
;
1091 struct switchtec_ioctl_pff_port p
;
1093 if (copy_from_user(&p
, up
, sizeof(p
)))
1097 for (part
= 0; part
< stdev
->partition_count
; part
++) {
1098 pcfg
= &stdev
->mmio_part_cfg_all
[part
];
1101 reg
= ioread32(&pcfg
->usp_pff_inst_id
);
1107 reg
= ioread32(&pcfg
->vep_pff_inst_id
);
1109 p
.port
= SWITCHTEC_IOCTL_PFF_VEP
;
1113 for (i
= 0; i
< ARRAY_SIZE(pcfg
->dsp_pff_inst_id
); i
++) {
1114 reg
= ioread32(&pcfg
->dsp_pff_inst_id
[i
]);
1126 if (copy_to_user(up
, &p
, sizeof(p
)))
1132 static int ioctl_port_to_pff(struct switchtec_dev
*stdev
,
1133 struct switchtec_ioctl_pff_port
*up
)
1135 struct switchtec_ioctl_pff_port p
;
1136 struct part_cfg_regs
*pcfg
;
1138 if (copy_from_user(&p
, up
, sizeof(p
)))
1141 if (p
.partition
== SWITCHTEC_IOCTL_EVENT_LOCAL_PART_IDX
)
1142 pcfg
= stdev
->mmio_part_cfg
;
1143 else if (p
.partition
< stdev
->partition_count
)
1144 pcfg
= &stdev
->mmio_part_cfg_all
[p
.partition
];
1150 p
.pff
= ioread32(&pcfg
->usp_pff_inst_id
);
1152 case SWITCHTEC_IOCTL_PFF_VEP
:
1153 p
.pff
= ioread32(&pcfg
->vep_pff_inst_id
);
1156 if (p
.port
> ARRAY_SIZE(pcfg
->dsp_pff_inst_id
))
1158 p
.pff
= ioread32(&pcfg
->dsp_pff_inst_id
[p
.port
- 1]);
1162 if (copy_to_user(up
, &p
, sizeof(p
)))
1168 static long switchtec_dev_ioctl(struct file
*filp
, unsigned int cmd
,
1171 struct switchtec_user
*stuser
= filp
->private_data
;
1172 struct switchtec_dev
*stdev
= stuser
->stdev
;
1174 void __user
*argp
= (void __user
*)arg
;
1176 rc
= lock_mutex_and_test_alive(stdev
);
1181 case SWITCHTEC_IOCTL_FLASH_INFO
:
1182 rc
= ioctl_flash_info(stdev
, argp
);
1184 case SWITCHTEC_IOCTL_FLASH_PART_INFO
:
1185 rc
= ioctl_flash_part_info(stdev
, argp
);
1187 case SWITCHTEC_IOCTL_EVENT_SUMMARY
:
1188 rc
= ioctl_event_summary(stdev
, stuser
, argp
);
1190 case SWITCHTEC_IOCTL_EVENT_CTL
:
1191 rc
= ioctl_event_ctl(stdev
, argp
);
1193 case SWITCHTEC_IOCTL_PFF_TO_PORT
:
1194 rc
= ioctl_pff_to_port(stdev
, argp
);
1196 case SWITCHTEC_IOCTL_PORT_TO_PFF
:
1197 rc
= ioctl_port_to_pff(stdev
, argp
);
1204 mutex_unlock(&stdev
->mrpc_mutex
);
1208 static const struct file_operations switchtec_fops
= {
1209 .owner
= THIS_MODULE
,
1210 .open
= switchtec_dev_open
,
1211 .release
= switchtec_dev_release
,
1212 .write
= switchtec_dev_write
,
1213 .read
= switchtec_dev_read
,
1214 .poll
= switchtec_dev_poll
,
1215 .unlocked_ioctl
= switchtec_dev_ioctl
,
1216 .compat_ioctl
= switchtec_dev_ioctl
,
1219 static void stdev_release(struct device
*dev
)
1221 struct switchtec_dev
*stdev
= to_stdev(dev
);
1226 static void stdev_kill(struct switchtec_dev
*stdev
)
1228 struct switchtec_user
*stuser
, *tmpuser
;
1230 pci_clear_master(stdev
->pdev
);
1232 cancel_delayed_work_sync(&stdev
->mrpc_timeout
);
1234 /* Mark the hardware as unavailable and complete all completions */
1235 mutex_lock(&stdev
->mrpc_mutex
);
1236 stdev
->alive
= false;
1238 /* Wake up and kill any users waiting on an MRPC request */
1239 list_for_each_entry_safe(stuser
, tmpuser
, &stdev
->mrpc_queue
, list
) {
1240 complete_all(&stuser
->comp
);
1241 list_del_init(&stuser
->list
);
1245 mutex_unlock(&stdev
->mrpc_mutex
);
1247 /* Wake up any users waiting on event_wq */
1248 wake_up_interruptible(&stdev
->event_wq
);
1251 static struct switchtec_dev
*stdev_create(struct pci_dev
*pdev
)
1253 struct switchtec_dev
*stdev
;
1259 stdev
= kzalloc_node(sizeof(*stdev
), GFP_KERNEL
,
1260 dev_to_node(&pdev
->dev
));
1262 return ERR_PTR(-ENOMEM
);
1264 stdev
->alive
= true;
1266 INIT_LIST_HEAD(&stdev
->mrpc_queue
);
1267 mutex_init(&stdev
->mrpc_mutex
);
1268 stdev
->mrpc_busy
= 0;
1269 INIT_WORK(&stdev
->mrpc_work
, mrpc_event_work
);
1270 INIT_DELAYED_WORK(&stdev
->mrpc_timeout
, mrpc_timeout_work
);
1271 init_waitqueue_head(&stdev
->event_wq
);
1272 atomic_set(&stdev
->event_cnt
, 0);
1275 device_initialize(dev
);
1276 dev
->class = switchtec_class
;
1277 dev
->parent
= &pdev
->dev
;
1278 dev
->groups
= switchtec_device_groups
;
1279 dev
->release
= stdev_release
;
1281 minor
= ida_simple_get(&switchtec_minor_ida
, 0, 0,
1288 dev
->devt
= MKDEV(MAJOR(switchtec_devt
), minor
);
1289 dev_set_name(dev
, "switchtec%d", minor
);
1291 cdev
= &stdev
->cdev
;
1292 cdev_init(cdev
, &switchtec_fops
);
1293 cdev
->owner
= THIS_MODULE
;
1294 cdev
->kobj
.parent
= &dev
->kobj
;
1299 put_device(&stdev
->dev
);
1303 static int mask_event(struct switchtec_dev
*stdev
, int eid
, int idx
)
1305 size_t off
= event_regs
[eid
].offset
;
1306 u32 __iomem
*hdr_reg
;
1309 hdr_reg
= event_regs
[eid
].map_reg(stdev
, off
, idx
);
1310 hdr
= ioread32(hdr_reg
);
1312 if (!(hdr
& SWITCHTEC_EVENT_OCCURRED
&& hdr
& SWITCHTEC_EVENT_EN_IRQ
))
1315 dev_dbg(&stdev
->dev
, "%s: %d %d %x\n", __func__
, eid
, idx
, hdr
);
1316 hdr
&= ~(SWITCHTEC_EVENT_EN_IRQ
| SWITCHTEC_EVENT_OCCURRED
);
1317 iowrite32(hdr
, hdr_reg
);
1322 static int mask_all_events(struct switchtec_dev
*stdev
, int eid
)
1327 if (event_regs
[eid
].map_reg
== part_ev_reg
) {
1328 for (idx
= 0; idx
< stdev
->partition_count
; idx
++)
1329 count
+= mask_event(stdev
, eid
, idx
);
1330 } else if (event_regs
[eid
].map_reg
== pff_ev_reg
) {
1331 for (idx
= 0; idx
< stdev
->pff_csr_count
; idx
++) {
1332 if (!stdev
->pff_local
[idx
])
1334 count
+= mask_event(stdev
, eid
, idx
);
1337 count
+= mask_event(stdev
, eid
, 0);
1343 static irqreturn_t
switchtec_event_isr(int irq
, void *dev
)
1345 struct switchtec_dev
*stdev
= dev
;
1347 irqreturn_t ret
= IRQ_NONE
;
1348 int eid
, event_count
= 0;
1350 reg
= ioread32(&stdev
->mmio_part_cfg
->mrpc_comp_hdr
);
1351 if (reg
& SWITCHTEC_EVENT_OCCURRED
) {
1352 dev_dbg(&stdev
->dev
, "%s: mrpc comp\n", __func__
);
1354 schedule_work(&stdev
->mrpc_work
);
1355 iowrite32(reg
, &stdev
->mmio_part_cfg
->mrpc_comp_hdr
);
1358 for (eid
= 0; eid
< SWITCHTEC_IOCTL_MAX_EVENTS
; eid
++)
1359 event_count
+= mask_all_events(stdev
, eid
);
1362 atomic_inc(&stdev
->event_cnt
);
1363 wake_up_interruptible(&stdev
->event_wq
);
1364 dev_dbg(&stdev
->dev
, "%s: %d events\n", __func__
,
1372 static int switchtec_init_isr(struct switchtec_dev
*stdev
)
1377 nvecs
= pci_alloc_irq_vectors(stdev
->pdev
, 1, 4,
1378 PCI_IRQ_MSIX
| PCI_IRQ_MSI
);
1382 event_irq
= ioread32(&stdev
->mmio_part_cfg
->vep_vector_number
);
1383 if (event_irq
< 0 || event_irq
>= nvecs
)
1386 event_irq
= pci_irq_vector(stdev
->pdev
, event_irq
);
1390 return devm_request_irq(&stdev
->pdev
->dev
, event_irq
,
1391 switchtec_event_isr
, 0,
1392 KBUILD_MODNAME
, stdev
);
1395 static void init_pff(struct switchtec_dev
*stdev
)
1399 struct part_cfg_regs
*pcfg
= stdev
->mmio_part_cfg
;
1401 for (i
= 0; i
< SWITCHTEC_MAX_PFF_CSR
; i
++) {
1402 reg
= ioread16(&stdev
->mmio_pff_csr
[i
].vendor_id
);
1403 if (reg
!= MICROSEMI_VENDOR_ID
)
1407 stdev
->pff_csr_count
= i
;
1409 reg
= ioread32(&pcfg
->usp_pff_inst_id
);
1410 if (reg
< SWITCHTEC_MAX_PFF_CSR
)
1411 stdev
->pff_local
[reg
] = 1;
1413 reg
= ioread32(&pcfg
->vep_pff_inst_id
);
1414 if (reg
< SWITCHTEC_MAX_PFF_CSR
)
1415 stdev
->pff_local
[reg
] = 1;
1417 for (i
= 0; i
< ARRAY_SIZE(pcfg
->dsp_pff_inst_id
); i
++) {
1418 reg
= ioread32(&pcfg
->dsp_pff_inst_id
[i
]);
1419 if (reg
< SWITCHTEC_MAX_PFF_CSR
)
1420 stdev
->pff_local
[reg
] = 1;
1424 static int switchtec_init_pci(struct switchtec_dev
*stdev
,
1425 struct pci_dev
*pdev
)
1429 rc
= pcim_enable_device(pdev
);
1433 rc
= pcim_iomap_regions(pdev
, 0x1, KBUILD_MODNAME
);
1437 pci_set_master(pdev
);
1439 stdev
->mmio
= pcim_iomap_table(pdev
)[0];
1440 stdev
->mmio_mrpc
= stdev
->mmio
+ SWITCHTEC_GAS_MRPC_OFFSET
;
1441 stdev
->mmio_sw_event
= stdev
->mmio
+ SWITCHTEC_GAS_SW_EVENT_OFFSET
;
1442 stdev
->mmio_sys_info
= stdev
->mmio
+ SWITCHTEC_GAS_SYS_INFO_OFFSET
;
1443 stdev
->mmio_flash_info
= stdev
->mmio
+ SWITCHTEC_GAS_FLASH_INFO_OFFSET
;
1444 stdev
->mmio_ntb
= stdev
->mmio
+ SWITCHTEC_GAS_NTB_OFFSET
;
1445 stdev
->partition
= ioread8(&stdev
->mmio_ntb
->partition_id
);
1446 stdev
->partition_count
= ioread8(&stdev
->mmio_ntb
->partition_count
);
1447 stdev
->mmio_part_cfg_all
= stdev
->mmio
+ SWITCHTEC_GAS_PART_CFG_OFFSET
;
1448 stdev
->mmio_part_cfg
= &stdev
->mmio_part_cfg_all
[stdev
->partition
];
1449 stdev
->mmio_pff_csr
= stdev
->mmio
+ SWITCHTEC_GAS_PFF_CSR_OFFSET
;
1453 pci_set_drvdata(pdev
, stdev
);
1458 static int switchtec_pci_probe(struct pci_dev
*pdev
,
1459 const struct pci_device_id
*id
)
1461 struct switchtec_dev
*stdev
;
1464 stdev
= stdev_create(pdev
);
1466 return PTR_ERR(stdev
);
1468 rc
= switchtec_init_pci(stdev
, pdev
);
1472 rc
= switchtec_init_isr(stdev
);
1474 dev_err(&stdev
->dev
, "failed to init isr.\n");
1478 iowrite32(SWITCHTEC_EVENT_CLEAR
|
1479 SWITCHTEC_EVENT_EN_IRQ
,
1480 &stdev
->mmio_part_cfg
->mrpc_comp_hdr
);
1482 rc
= cdev_add(&stdev
->cdev
, stdev
->dev
.devt
, 1);
1486 rc
= device_add(&stdev
->dev
);
1490 dev_info(&stdev
->dev
, "Management device registered.\n");
1495 cdev_del(&stdev
->cdev
);
1498 ida_simple_remove(&switchtec_minor_ida
, MINOR(stdev
->dev
.devt
));
1499 put_device(&stdev
->dev
);
1503 static void switchtec_pci_remove(struct pci_dev
*pdev
)
1505 struct switchtec_dev
*stdev
= pci_get_drvdata(pdev
);
1507 pci_set_drvdata(pdev
, NULL
);
1509 device_del(&stdev
->dev
);
1510 cdev_del(&stdev
->cdev
);
1511 ida_simple_remove(&switchtec_minor_ida
, MINOR(stdev
->dev
.devt
));
1512 dev_info(&stdev
->dev
, "unregistered.\n");
1515 put_device(&stdev
->dev
);
1518 #define SWITCHTEC_PCI_DEVICE(device_id) \
1520 .vendor = MICROSEMI_VENDOR_ID, \
1521 .device = device_id, \
1522 .subvendor = PCI_ANY_ID, \
1523 .subdevice = PCI_ANY_ID, \
1524 .class = MICROSEMI_MGMT_CLASSCODE, \
1525 .class_mask = 0xFFFFFFFF, \
1528 .vendor = MICROSEMI_VENDOR_ID, \
1529 .device = device_id, \
1530 .subvendor = PCI_ANY_ID, \
1531 .subdevice = PCI_ANY_ID, \
1532 .class = MICROSEMI_NTB_CLASSCODE, \
1533 .class_mask = 0xFFFFFFFF, \
1536 static const struct pci_device_id switchtec_pci_tbl
[] = {
1537 SWITCHTEC_PCI_DEVICE(0x8531), //PFX 24xG3
1538 SWITCHTEC_PCI_DEVICE(0x8532), //PFX 32xG3
1539 SWITCHTEC_PCI_DEVICE(0x8533), //PFX 48xG3
1540 SWITCHTEC_PCI_DEVICE(0x8534), //PFX 64xG3
1541 SWITCHTEC_PCI_DEVICE(0x8535), //PFX 80xG3
1542 SWITCHTEC_PCI_DEVICE(0x8536), //PFX 96xG3
1543 SWITCHTEC_PCI_DEVICE(0x8543), //PSX 48xG3
1544 SWITCHTEC_PCI_DEVICE(0x8544), //PSX 64xG3
1545 SWITCHTEC_PCI_DEVICE(0x8545), //PSX 80xG3
1546 SWITCHTEC_PCI_DEVICE(0x8546), //PSX 96xG3
1549 MODULE_DEVICE_TABLE(pci
, switchtec_pci_tbl
);
1551 static struct pci_driver switchtec_pci_driver
= {
1552 .name
= KBUILD_MODNAME
,
1553 .id_table
= switchtec_pci_tbl
,
1554 .probe
= switchtec_pci_probe
,
1555 .remove
= switchtec_pci_remove
,
1558 static int __init
switchtec_init(void)
1562 rc
= alloc_chrdev_region(&switchtec_devt
, 0, max_devices
,
1567 switchtec_class
= class_create(THIS_MODULE
, "switchtec");
1568 if (IS_ERR(switchtec_class
)) {
1569 rc
= PTR_ERR(switchtec_class
);
1570 goto err_create_class
;
1573 rc
= pci_register_driver(&switchtec_pci_driver
);
1575 goto err_pci_register
;
1577 pr_info(KBUILD_MODNAME
": loaded.\n");
1582 class_destroy(switchtec_class
);
1585 unregister_chrdev_region(switchtec_devt
, max_devices
);
1589 module_init(switchtec_init
);
1591 static void __exit
switchtec_exit(void)
1593 pci_unregister_driver(&switchtec_pci_driver
);
1594 class_destroy(switchtec_class
);
1595 unregister_chrdev_region(switchtec_devt
, max_devices
);
1596 ida_destroy(&switchtec_minor_ida
);
1598 pr_info(KBUILD_MODNAME
": unloaded.\n");
1600 module_exit(switchtec_exit
);