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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)
24enum {
25 SWITCHTEC_GAS_MRPC_OFFSET = 0x0000,
26 SWITCHTEC_GAS_TOP_CFG_OFFSET = 0x1000,
27 SWITCHTEC_GAS_SW_EVENT_OFFSET = 0x1800,
28 SWITCHTEC_GAS_SYS_INFO_OFFSET = 0x2000,
29 SWITCHTEC_GAS_FLASH_INFO_OFFSET = 0x2200,
30 SWITCHTEC_GAS_PART_CFG_OFFSET = 0x4000,
31 SWITCHTEC_GAS_NTB_OFFSET = 0x10000,
32 SWITCHTEC_GAS_PFF_CSR_OFFSET = 0x134000,
33};
34
35struct mrpc_regs {
36 u8 input_data[SWITCHTEC_MRPC_PAYLOAD_SIZE];
37 u8 output_data[SWITCHTEC_MRPC_PAYLOAD_SIZE];
38 u32 cmd;
39 u32 status;
40 u32 ret_value;
41 u32 dma_en;
42 u64 dma_addr;
43 u32 dma_vector;
44 u32 dma_ver;
45} __packed;
46
47enum mrpc_status {
48 SWITCHTEC_MRPC_STATUS_INPROGRESS = 1,
49 SWITCHTEC_MRPC_STATUS_DONE = 2,
50 SWITCHTEC_MRPC_STATUS_ERROR = 0xFF,
51 SWITCHTEC_MRPC_STATUS_INTERRUPTED = 0x100,
52};
53
54struct sw_event_regs {
55 u64 event_report_ctrl;
56 u64 reserved1;
57 u64 part_event_bitmap;
58 u64 reserved2;
59 u32 global_summary;
60 u32 reserved3[3];
61 u32 stack_error_event_hdr;
62 u32 stack_error_event_data;
63 u32 reserved4[4];
64 u32 ppu_error_event_hdr;
65 u32 ppu_error_event_data;
66 u32 reserved5[4];
67 u32 isp_error_event_hdr;
68 u32 isp_error_event_data;
69 u32 reserved6[4];
70 u32 sys_reset_event_hdr;
71 u32 reserved7[5];
72 u32 fw_exception_hdr;
73 u32 reserved8[5];
74 u32 fw_nmi_hdr;
75 u32 reserved9[5];
76 u32 fw_non_fatal_hdr;
77 u32 reserved10[5];
78 u32 fw_fatal_hdr;
79 u32 reserved11[5];
80 u32 twi_mrpc_comp_hdr;
81 u32 twi_mrpc_comp_data;
82 u32 reserved12[4];
83 u32 twi_mrpc_comp_async_hdr;
84 u32 twi_mrpc_comp_async_data;
85 u32 reserved13[4];
86 u32 cli_mrpc_comp_hdr;
87 u32 cli_mrpc_comp_data;
88 u32 reserved14[4];
89 u32 cli_mrpc_comp_async_hdr;
90 u32 cli_mrpc_comp_async_data;
91 u32 reserved15[4];
92 u32 gpio_interrupt_hdr;
93 u32 gpio_interrupt_data;
94 u32 reserved16[4];
95 u32 gfms_event_hdr;
96 u32 gfms_event_data;
97 u32 reserved17[4];
98} __packed;
99
100enum {
101 SWITCHTEC_CFG0_RUNNING = 0x04,
102 SWITCHTEC_CFG1_RUNNING = 0x05,
103 SWITCHTEC_IMG0_RUNNING = 0x03,
104 SWITCHTEC_IMG1_RUNNING = 0x07,
105};
106
107struct sys_info_regs {
108 u32 device_id;
109 u32 device_version;
110 u32 firmware_version;
111 u32 reserved1;
112 u32 vendor_table_revision;
113 u32 table_format_version;
114 u32 partition_id;
115 u32 cfg_file_fmt_version;
116 u16 cfg_running;
117 u16 img_running;
118 u32 reserved2[57];
119 char vendor_id[8];
120 char product_id[16];
121 char product_revision[4];
122 char component_vendor[8];
123 u16 component_id;
124 u8 component_revision;
125} __packed;
126
127struct flash_info_regs {
128 u32 flash_part_map_upd_idx;
129
130 struct active_partition_info {
131 u32 address;
132 u32 build_version;
133 u32 build_string;
134 } active_img;
135
136 struct active_partition_info active_cfg;
137 struct active_partition_info inactive_img;
138 struct active_partition_info inactive_cfg;
139
140 u32 flash_length;
141
142 struct partition_info {
143 u32 address;
144 u32 length;
145 } cfg0;
146
147 struct partition_info cfg1;
148 struct partition_info img0;
149 struct partition_info img1;
150 struct partition_info nvlog;
151 struct partition_info vendor[8];
152};
153
154enum {
155 SWITCHTEC_NTB_REG_INFO_OFFSET = 0x0000,
156 SWITCHTEC_NTB_REG_CTRL_OFFSET = 0x4000,
157 SWITCHTEC_NTB_REG_DBMSG_OFFSET = 0x64000,
158};
159
160struct ntb_info_regs {
161 u8 partition_count;
162 u8 partition_id;
163 u16 reserved1;
164 u64 ep_map;
165 u16 requester_id;
166 u16 reserved2;
167 u32 reserved3[4];
168 struct nt_partition_info {
169 u32 xlink_enabled;
170 u32 target_part_low;
171 u32 target_part_high;
172 u32 reserved;
173 } ntp_info[48];
174} __packed;
175
176struct part_cfg_regs {
177 u32 status;
178 u32 state;
179 u32 port_cnt;
180 u32 usp_port_mode;
181 u32 usp_pff_inst_id;
182 u32 vep_pff_inst_id;
183 u32 dsp_pff_inst_id[47];
184 u32 reserved1[11];
185 u16 vep_vector_number;
186 u16 usp_vector_number;
187 u32 port_event_bitmap;
188 u32 reserved2[3];
189 u32 part_event_summary;
190 u32 reserved3[3];
191 u32 part_reset_hdr;
192 u32 part_reset_data[5];
193 u32 mrpc_comp_hdr;
194 u32 mrpc_comp_data[5];
195 u32 mrpc_comp_async_hdr;
196 u32 mrpc_comp_async_data[5];
197 u32 dyn_binding_hdr;
198 u32 dyn_binding_data[5];
199 u32 reserved4[159];
200} __packed;
201
202enum {
203 NTB_CTRL_PART_OP_LOCK = 0x1,
204 NTB_CTRL_PART_OP_CFG = 0x2,
205 NTB_CTRL_PART_OP_RESET = 0x3,
206
207 NTB_CTRL_PART_STATUS_NORMAL = 0x1,
208 NTB_CTRL_PART_STATUS_LOCKED = 0x2,
209 NTB_CTRL_PART_STATUS_LOCKING = 0x3,
210 NTB_CTRL_PART_STATUS_CONFIGURING = 0x4,
211 NTB_CTRL_PART_STATUS_RESETTING = 0x5,
212
213 NTB_CTRL_BAR_VALID = 1 << 0,
214 NTB_CTRL_BAR_DIR_WIN_EN = 1 << 4,
215 NTB_CTRL_BAR_LUT_WIN_EN = 1 << 5,
216
217 NTB_CTRL_REQ_ID_EN = 1 << 0,
218
219 NTB_CTRL_LUT_EN = 1 << 0,
220
221 NTB_PART_CTRL_ID_PROT_DIS = 1 << 0,
222};
223
224struct ntb_ctrl_regs {
225 u32 partition_status;
226 u32 partition_op;
227 u32 partition_ctrl;
228 u32 bar_setup;
229 u32 bar_error;
230 u16 lut_table_entries;
231 u16 lut_table_offset;
232 u32 lut_error;
233 u16 req_id_table_size;
234 u16 req_id_table_offset;
235 u32 req_id_error;
236 u32 reserved1[7];
237 struct {
238 u32 ctl;
239 u32 win_size;
240 u64 xlate_addr;
241 } bar_entry[6];
242 struct {
243 u32 win_size;
244 u32 reserved[3];
245 } bar_ext_entry[6];
246 u32 reserved2[192];
247 u32 req_id_table[512];
248 u32 reserved3[256];
249 u64 lut_entry[512];
250} __packed;
251
252#define NTB_DBMSG_IMSG_STATUS BIT_ULL(32)
253#define NTB_DBMSG_IMSG_MASK BIT_ULL(40)
254
255struct ntb_dbmsg_regs {
256 u32 reserved1[1024];
257 u64 odb;
258 u64 odb_mask;
259 u64 idb;
260 u64 idb_mask;
261 u8 idb_vec_map[64];
262 u32 msg_map;
263 u32 reserved2;
264 struct {
265 u32 msg;
266 u32 status;
267 } omsg[4];
268
269 struct {
270 u32 msg;
271 u8 status;
272 u8 mask;
273 u8 src;
274 u8 reserved;
275 } imsg[4];
276
277 u8 reserved3[3928];
278 u8 msix_table[1024];
279 u8 reserved4[3072];
280 u8 pba[24];
281 u8 reserved5[4072];
282} __packed;
283
284enum {
285 SWITCHTEC_PART_CFG_EVENT_RESET = 1 << 0,
286 SWITCHTEC_PART_CFG_EVENT_MRPC_CMP = 1 << 1,
287 SWITCHTEC_PART_CFG_EVENT_MRPC_ASYNC_CMP = 1 << 2,
288 SWITCHTEC_PART_CFG_EVENT_DYN_PART_CMP = 1 << 3,
289};
290
291struct pff_csr_regs {
292 u16 vendor_id;
293 u16 device_id;
294 u16 pcicmd;
295 u16 pcists;
296 u32 pci_class;
297 u32 pci_opts;
298 union {
299 u32 pci_bar[6];
300 u64 pci_bar64[3];
301 };
302 u32 pci_cardbus;
303 u32 pci_subsystem_id;
304 u32 pci_expansion_rom;
305 u32 pci_cap_ptr;
306 u32 reserved1;
307 u32 pci_irq;
308 u32 pci_cap_region[48];
309 u32 pcie_cap_region[448];
310 u32 indirect_gas_window[128];
311 u32 indirect_gas_window_off;
312 u32 reserved[127];
313 u32 pff_event_summary;
314 u32 reserved2[3];
315 u32 aer_in_p2p_hdr;
316 u32 aer_in_p2p_data[5];
317 u32 aer_in_vep_hdr;
318 u32 aer_in_vep_data[5];
319 u32 dpc_hdr;
320 u32 dpc_data[5];
321 u32 cts_hdr;
322 u32 cts_data[5];
323 u32 reserved3[6];
324 u32 hotplug_hdr;
325 u32 hotplug_data[5];
326 u32 ier_hdr;
327 u32 ier_data[5];
328 u32 threshold_hdr;
329 u32 threshold_data[5];
330 u32 power_mgmt_hdr;
331 u32 power_mgmt_data[5];
332 u32 tlp_throttling_hdr;
333 u32 tlp_throttling_data[5];
334 u32 force_speed_hdr;
335 u32 force_speed_data[5];
336 u32 credit_timeout_hdr;
337 u32 credit_timeout_data[5];
338 u32 link_state_hdr;
339 u32 link_state_data[5];
340 u32 reserved4[174];
341} __packed;
342
343struct switchtec_ntb;
344
345struct dma_mrpc_output {
346 u32 status;
347 u32 cmd_id;
348 u32 rtn_code;
349 u32 output_size;
350 u8 data[SWITCHTEC_MRPC_PAYLOAD_SIZE];
351};
352
353struct switchtec_dev {
354 struct pci_dev *pdev;
355 struct device dev;
356 struct cdev cdev;
357
358 int partition;
359 int partition_count;
360 int pff_csr_count;
361 char pff_local[SWITCHTEC_MAX_PFF_CSR];
362
363 void __iomem *mmio;
364 struct mrpc_regs __iomem *mmio_mrpc;
365 struct sw_event_regs __iomem *mmio_sw_event;
366 struct sys_info_regs __iomem *mmio_sys_info;
367 struct flash_info_regs __iomem *mmio_flash_info;
368 struct ntb_info_regs __iomem *mmio_ntb;
369 struct part_cfg_regs __iomem *mmio_part_cfg;
370 struct part_cfg_regs __iomem *mmio_part_cfg_all;
371 struct pff_csr_regs __iomem *mmio_pff_csr;
372
373 /*
374 * The mrpc mutex must be held when accessing the other
375 * mrpc_ fields, alive flag and stuser->state field
376 */
377 struct mutex mrpc_mutex;
378 struct list_head mrpc_queue;
379 int mrpc_busy;
380 struct work_struct mrpc_work;
381 struct delayed_work mrpc_timeout;
382 bool alive;
383
384 wait_queue_head_t event_wq;
385 atomic_t event_cnt;
386
387 struct work_struct link_event_work;
388 void (*link_notifier)(struct switchtec_dev *stdev);
389 u8 link_event_count[SWITCHTEC_MAX_PFF_CSR];
390
391 struct switchtec_ntb *sndev;
392
393 struct dma_mrpc_output *dma_mrpc;
394 dma_addr_t dma_mrpc_dma_addr;
395};
396
397static inline struct switchtec_dev *to_stdev(struct device *dev)
398{
399 return container_of(dev, struct switchtec_dev, dev);
400}
401
402extern struct class *switchtec_class;
403
404#endif