1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Microsemi Switchtec PCIe Driver
4 * Copyright (c) 2017, Microsemi Corporation
5 */
6
7 #ifndef _SWITCHTEC_H
8 #define _SWITCHTEC_H
9
10 #include <linux/pci.h>
11 #include <linux/cdev.h>
12
13 #define SWITCHTEC_MRPC_PAYLOAD_SIZE 1024
14 #define SWITCHTEC_MAX_PFF_CSR 255
15
16 #define SWITCHTEC_EVENT_OCCURRED BIT(0)
17 #define SWITCHTEC_EVENT_CLEAR BIT(0)
18 #define SWITCHTEC_EVENT_EN_LOG BIT(1)
19 #define SWITCHTEC_EVENT_EN_CLI BIT(2)
20 #define SWITCHTEC_EVENT_EN_IRQ BIT(3)
21 #define SWITCHTEC_EVENT_FATAL BIT(4)
22
23 #define SWITCHTEC_DMA_MRPC_EN BIT(0)
24
25 #define MRPC_GAS_READ 0x29
26 #define MRPC_GAS_WRITE 0x87
27 #define MRPC_CMD_ID(x) ((x) & 0xffff)
28
29 enum {
30 SWITCHTEC_GAS_MRPC_OFFSET = 0x0000,
31 SWITCHTEC_GAS_TOP_CFG_OFFSET = 0x1000,
32 SWITCHTEC_GAS_SW_EVENT_OFFSET = 0x1800,
33 SWITCHTEC_GAS_SYS_INFO_OFFSET = 0x2000,
34 SWITCHTEC_GAS_FLASH_INFO_OFFSET = 0x2200,
35 SWITCHTEC_GAS_PART_CFG_OFFSET = 0x4000,
36 SWITCHTEC_GAS_NTB_OFFSET = 0x10000,
37 SWITCHTEC_GAS_PFF_CSR_OFFSET = 0x134000,
38 };
39
40 enum switchtec_gen {
41 SWITCHTEC_GEN3,
42 SWITCHTEC_GEN4,
43 };
44
45 struct mrpc_regs {
46 u8 input_data[SWITCHTEC_MRPC_PAYLOAD_SIZE];
47 u8 output_data[SWITCHTEC_MRPC_PAYLOAD_SIZE];
48 u32 cmd;
49 u32 status;
50 u32 ret_value;
51 u32 dma_en;
52 u64 dma_addr;
53 u32 dma_vector;
54 u32 dma_ver;
55 } __packed;
56
57 enum mrpc_status {
58 SWITCHTEC_MRPC_STATUS_INPROGRESS = 1,
59 SWITCHTEC_MRPC_STATUS_DONE = 2,
60 SWITCHTEC_MRPC_STATUS_ERROR = 0xFF,
61 SWITCHTEC_MRPC_STATUS_INTERRUPTED = 0x100,
62 };
63
64 struct sw_event_regs {
65 u64 event_report_ctrl;
66 u64 reserved1;
67 u64 part_event_bitmap;
68 u64 reserved2;
69 u32 global_summary;
70 u32 reserved3[3];
71 u32 stack_error_event_hdr;
72 u32 stack_error_event_data;
73 u32 reserved4[4];
74 u32 ppu_error_event_hdr;
75 u32 ppu_error_event_data;
76 u32 reserved5[4];
77 u32 isp_error_event_hdr;
78 u32 isp_error_event_data;
79 u32 reserved6[4];
80 u32 sys_reset_event_hdr;
81 u32 reserved7[5];
82 u32 fw_exception_hdr;
83 u32 reserved8[5];
84 u32 fw_nmi_hdr;
85 u32 reserved9[5];
86 u32 fw_non_fatal_hdr;
87 u32 reserved10[5];
88 u32 fw_fatal_hdr;
89 u32 reserved11[5];
90 u32 twi_mrpc_comp_hdr;
91 u32 twi_mrpc_comp_data;
92 u32 reserved12[4];
93 u32 twi_mrpc_comp_async_hdr;
94 u32 twi_mrpc_comp_async_data;
95 u32 reserved13[4];
96 u32 cli_mrpc_comp_hdr;
97 u32 cli_mrpc_comp_data;
98 u32 reserved14[4];
99 u32 cli_mrpc_comp_async_hdr;
100 u32 cli_mrpc_comp_async_data;
101 u32 reserved15[4];
102 u32 gpio_interrupt_hdr;
103 u32 gpio_interrupt_data;
104 u32 reserved16[4];
105 u32 gfms_event_hdr;
106 u32 gfms_event_data;
107 u32 reserved17[4];
108 } __packed;
109
110 enum {
111 SWITCHTEC_GEN3_CFG0_RUNNING = 0x04,
112 SWITCHTEC_GEN3_CFG1_RUNNING = 0x05,
113 SWITCHTEC_GEN3_IMG0_RUNNING = 0x03,
114 SWITCHTEC_GEN3_IMG1_RUNNING = 0x07,
115 };
116
117 enum {
118 SWITCHTEC_GEN4_MAP0_RUNNING = 0x00,
119 SWITCHTEC_GEN4_MAP1_RUNNING = 0x01,
120 SWITCHTEC_GEN4_KEY0_RUNNING = 0x02,
121 SWITCHTEC_GEN4_KEY1_RUNNING = 0x03,
122 SWITCHTEC_GEN4_BL2_0_RUNNING = 0x04,
123 SWITCHTEC_GEN4_BL2_1_RUNNING = 0x05,
124 SWITCHTEC_GEN4_CFG0_RUNNING = 0x06,
125 SWITCHTEC_GEN4_CFG1_RUNNING = 0x07,
126 SWITCHTEC_GEN4_IMG0_RUNNING = 0x08,
127 SWITCHTEC_GEN4_IMG1_RUNNING = 0x09,
128 };
129
130 enum {
131 SWITCHTEC_GEN4_KEY0_ACTIVE = 0,
132 SWITCHTEC_GEN4_KEY1_ACTIVE = 1,
133 SWITCHTEC_GEN4_BL2_0_ACTIVE = 0,
134 SWITCHTEC_GEN4_BL2_1_ACTIVE = 1,
135 SWITCHTEC_GEN4_CFG0_ACTIVE = 0,
136 SWITCHTEC_GEN4_CFG1_ACTIVE = 1,
137 SWITCHTEC_GEN4_IMG0_ACTIVE = 0,
138 SWITCHTEC_GEN4_IMG1_ACTIVE = 1,
139 };
140
141 struct sys_info_regs_gen3 {
142 u32 reserved1;
143 u32 vendor_table_revision;
144 u32 table_format_version;
145 u32 partition_id;
146 u32 cfg_file_fmt_version;
147 u16 cfg_running;
148 u16 img_running;
149 u32 reserved2[57];
150 char vendor_id[8];
151 char product_id[16];
152 char product_revision[4];
153 char component_vendor[8];
154 u16 component_id;
155 u8 component_revision;
156 } __packed;
157
158 struct sys_info_regs_gen4 {
159 u16 gas_layout_ver;
160 u8 evlist_ver;
161 u8 reserved1;
162 u16 mgmt_cmd_set_ver;
163 u16 fabric_cmd_set_ver;
164 u32 reserved2[2];
165 u8 mrpc_uart_ver;
166 u8 mrpc_twi_ver;
167 u8 mrpc_eth_ver;
168 u8 mrpc_inband_ver;
169 u32 reserved3[7];
170 u32 fw_update_tmo;
171 u32 xml_version_cfg;
172 u32 xml_version_img;
173 u32 partition_id;
174 u16 bl2_running;
175 u16 cfg_running;
176 u16 img_running;
177 u16 key_running;
178 u32 reserved4[43];
179 u32 vendor_seeprom_twi;
180 u32 vendor_table_revision;
181 u32 vendor_specific_info[2];
182 u16 p2p_vendor_id;
183 u16 p2p_device_id;
184 u8 p2p_revision_id;
185 u8 reserved5[3];
186 u32 p2p_class_id;
187 u16 subsystem_vendor_id;
188 u16 subsystem_id;
189 u32 p2p_serial_number[2];
190 u8 mac_addr[6];
191 u8 reserved6[2];
192 u32 reserved7[3];
193 char vendor_id[8];
194 char product_id[24];
195 char product_revision[2];
196 u16 reserved8;
197 } __packed;
198
199 struct sys_info_regs {
200 u32 device_id;
201 u32 device_version;
202 u32 firmware_version;
203 union {
204 struct sys_info_regs_gen3 gen3;
205 struct sys_info_regs_gen4 gen4;
206 };
207 } __packed;
208
209 struct partition_info {
210 u32 address;
211 u32 length;
212 };
213
214 struct flash_info_regs_gen3 {
215 u32 flash_part_map_upd_idx;
216
217 struct active_partition_info_gen3 {
218 u32 address;
219 u32 build_version;
220 u32 build_string;
221 } active_img;
222
223 struct active_partition_info_gen3 active_cfg;
224 struct active_partition_info_gen3 inactive_img;
225 struct active_partition_info_gen3 inactive_cfg;
226
227 u32 flash_length;
228
229 struct partition_info cfg0;
230 struct partition_info cfg1;
231 struct partition_info img0;
232 struct partition_info img1;
233 struct partition_info nvlog;
234 struct partition_info vendor[8];
235 };
236
237 struct flash_info_regs_gen4 {
238 u32 flash_address;
239 u32 flash_length;
240
241 struct active_partition_info_gen4 {
242 unsigned char bl2;
243 unsigned char cfg;
244 unsigned char img;
245 unsigned char key;
246 } active_flag;
247
248 u32 reserved[3];
249
250 struct partition_info map0;
251 struct partition_info map1;
252 struct partition_info key0;
253 struct partition_info key1;
254 struct partition_info bl2_0;
255 struct partition_info bl2_1;
256 struct partition_info cfg0;
257 struct partition_info cfg1;
258 struct partition_info img0;
259 struct partition_info img1;
260 struct partition_info nvlog;
261 struct partition_info vendor[8];
262 };
263
264 struct flash_info_regs {
265 union {
266 struct flash_info_regs_gen3 gen3;
267 struct flash_info_regs_gen4 gen4;
268 };
269 };
270
271 enum {
272 SWITCHTEC_NTB_REG_INFO_OFFSET = 0x0000,
273 SWITCHTEC_NTB_REG_CTRL_OFFSET = 0x4000,
274 SWITCHTEC_NTB_REG_DBMSG_OFFSET = 0x64000,
275 };
276
277 struct ntb_info_regs {
278 u8 partition_count;
279 u8 partition_id;
280 u16 reserved1;
281 u64 ep_map;
282 u16 requester_id;
283 u16 reserved2;
284 u32 reserved3[4];
285 struct nt_partition_info {
286 u32 xlink_enabled;
287 u32 target_part_low;
288 u32 target_part_high;
289 u32 reserved;
290 } ntp_info[48];
291 } __packed;
292
293 struct part_cfg_regs {
294 u32 status;
295 u32 state;
296 u32 port_cnt;
297 u32 usp_port_mode;
298 u32 usp_pff_inst_id;
299 u32 vep_pff_inst_id;
300 u32 dsp_pff_inst_id[47];
301 u32 reserved1[11];
302 u16 vep_vector_number;
303 u16 usp_vector_number;
304 u32 port_event_bitmap;
305 u32 reserved2[3];
306 u32 part_event_summary;
307 u32 reserved3[3];
308 u32 part_reset_hdr;
309 u32 part_reset_data[5];
310 u32 mrpc_comp_hdr;
311 u32 mrpc_comp_data[5];
312 u32 mrpc_comp_async_hdr;
313 u32 mrpc_comp_async_data[5];
314 u32 dyn_binding_hdr;
315 u32 dyn_binding_data[5];
316 u32 intercomm_notify_hdr;
317 u32 intercomm_notify_data[5];
318 u32 reserved4[153];
319 } __packed;
320
321 enum {
322 NTB_CTRL_PART_OP_LOCK = 0x1,
323 NTB_CTRL_PART_OP_CFG = 0x2,
324 NTB_CTRL_PART_OP_RESET = 0x3,
325
326 NTB_CTRL_PART_STATUS_NORMAL = 0x1,
327 NTB_CTRL_PART_STATUS_LOCKED = 0x2,
328 NTB_CTRL_PART_STATUS_LOCKING = 0x3,
329 NTB_CTRL_PART_STATUS_CONFIGURING = 0x4,
330 NTB_CTRL_PART_STATUS_RESETTING = 0x5,
331
332 NTB_CTRL_BAR_VALID = 1 << 0,
333 NTB_CTRL_BAR_DIR_WIN_EN = 1 << 4,
334 NTB_CTRL_BAR_LUT_WIN_EN = 1 << 5,
335
336 NTB_CTRL_REQ_ID_EN = 1 << 0,
337
338 NTB_CTRL_LUT_EN = 1 << 0,
339
340 NTB_PART_CTRL_ID_PROT_DIS = 1 << 0,
341 };
342
343 struct ntb_ctrl_regs {
344 u32 partition_status;
345 u32 partition_op;
346 u32 partition_ctrl;
347 u32 bar_setup;
348 u32 bar_error;
349 u16 lut_table_entries;
350 u16 lut_table_offset;
351 u32 lut_error;
352 u16 req_id_table_size;
353 u16 req_id_table_offset;
354 u32 req_id_error;
355 u32 reserved1[7];
356 struct {
357 u32 ctl;
358 u32 win_size;
359 u64 xlate_addr;
360 } bar_entry[6];
361 struct {
362 u32 win_size;
363 u32 reserved[3];
364 } bar_ext_entry[6];
365 u32 reserved2[192];
366 u32 req_id_table[512];
367 u32 reserved3[256];
368 u64 lut_entry[512];
369 } __packed;
370
371 #define NTB_DBMSG_IMSG_STATUS BIT_ULL(32)
372 #define NTB_DBMSG_IMSG_MASK BIT_ULL(40)
373
374 struct ntb_dbmsg_regs {
375 u32 reserved1[1024];
376 u64 odb;
377 u64 odb_mask;
378 u64 idb;
379 u64 idb_mask;
380 u8 idb_vec_map[64];
381 u32 msg_map;
382 u32 reserved2;
383 struct {
384 u32 msg;
385 u32 status;
386 } omsg[4];
387
388 struct {
389 u32 msg;
390 u8 status;
391 u8 mask;
392 u8 src;
393 u8 reserved;
394 } imsg[4];
395
396 u8 reserved3[3928];
397 u8 msix_table[1024];
398 u8 reserved4[3072];
399 u8 pba[24];
400 u8 reserved5[4072];
401 } __packed;
402
403 enum {
404 SWITCHTEC_PART_CFG_EVENT_RESET = 1 << 0,
405 SWITCHTEC_PART_CFG_EVENT_MRPC_CMP = 1 << 1,
406 SWITCHTEC_PART_CFG_EVENT_MRPC_ASYNC_CMP = 1 << 2,
407 SWITCHTEC_PART_CFG_EVENT_DYN_PART_CMP = 1 << 3,
408 };
409
410 struct pff_csr_regs {
411 u16 vendor_id;
412 u16 device_id;
413 u16 pcicmd;
414 u16 pcists;
415 u32 pci_class;
416 u32 pci_opts;
417 union {
418 u32 pci_bar[6];
419 u64 pci_bar64[3];
420 };
421 u32 pci_cardbus;
422 u32 pci_subsystem_id;
423 u32 pci_expansion_rom;
424 u32 pci_cap_ptr;
425 u32 reserved1;
426 u32 pci_irq;
427 u32 pci_cap_region[48];
428 u32 pcie_cap_region[448];
429 u32 indirect_gas_window[128];
430 u32 indirect_gas_window_off;
431 u32 reserved[127];
432 u32 pff_event_summary;
433 u32 reserved2[3];
434 u32 aer_in_p2p_hdr;
435 u32 aer_in_p2p_data[5];
436 u32 aer_in_vep_hdr;
437 u32 aer_in_vep_data[5];
438 u32 dpc_hdr;
439 u32 dpc_data[5];
440 u32 cts_hdr;
441 u32 cts_data[5];
442 u32 uec_hdr;
443 u32 uec_data[5];
444 u32 hotplug_hdr;
445 u32 hotplug_data[5];
446 u32 ier_hdr;
447 u32 ier_data[5];
448 u32 threshold_hdr;
449 u32 threshold_data[5];
450 u32 power_mgmt_hdr;
451 u32 power_mgmt_data[5];
452 u32 tlp_throttling_hdr;
453 u32 tlp_throttling_data[5];
454 u32 force_speed_hdr;
455 u32 force_speed_data[5];
456 u32 credit_timeout_hdr;
457 u32 credit_timeout_data[5];
458 u32 link_state_hdr;
459 u32 link_state_data[5];
460 u32 reserved4[174];
461 } __packed;
462
463 struct switchtec_ntb;
464
465 struct dma_mrpc_output {
466 u32 status;
467 u32 cmd_id;
468 u32 rtn_code;
469 u32 output_size;
470 u8 data[SWITCHTEC_MRPC_PAYLOAD_SIZE];
471 };
472
473 struct switchtec_dev {
474 struct pci_dev *pdev;
475 struct device dev;
476 struct cdev cdev;
477
478 enum switchtec_gen gen;
479
480 int partition;
481 int partition_count;
482 int pff_csr_count;
483 char pff_local[SWITCHTEC_MAX_PFF_CSR];
484
485 void __iomem *mmio;
486 struct mrpc_regs __iomem *mmio_mrpc;
487 struct sw_event_regs __iomem *mmio_sw_event;
488 struct sys_info_regs __iomem *mmio_sys_info;
489 struct flash_info_regs __iomem *mmio_flash_info;
490 struct ntb_info_regs __iomem *mmio_ntb;
491 struct part_cfg_regs __iomem *mmio_part_cfg;
492 struct part_cfg_regs __iomem *mmio_part_cfg_all;
493 struct pff_csr_regs __iomem *mmio_pff_csr;
494
495 /*
496 * The mrpc mutex must be held when accessing the other
497 * mrpc_ fields, alive flag and stuser->state field
498 */
499 struct mutex mrpc_mutex;
500 struct list_head mrpc_queue;
501 int mrpc_busy;
502 struct work_struct mrpc_work;
503 struct delayed_work mrpc_timeout;
504 bool alive;
505
506 wait_queue_head_t event_wq;
507 atomic_t event_cnt;
508
509 struct work_struct link_event_work;
510 void (*link_notifier)(struct switchtec_dev *stdev);
511 u8 link_event_count[SWITCHTEC_MAX_PFF_CSR];
512
513 struct switchtec_ntb *sndev;
514
515 struct dma_mrpc_output *dma_mrpc;
516 dma_addr_t dma_mrpc_dma_addr;
517 };
518
to_stdev(struct device * dev)519 static inline struct switchtec_dev *to_stdev(struct device *dev)
520 {
521 return container_of(dev, struct switchtec_dev, dev);
522 }
523
524 extern struct class *switchtec_class;
525
526 #endif
527