2 * Microsemi Switchtec PCIe 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
19 #include <linux/pci.h>
20 #include <linux/cdev.h>
22 #define SWITCHTEC_MRPC_PAYLOAD_SIZE 1024
23 #define SWITCHTEC_MAX_PFF_CSR 48
25 #define SWITCHTEC_EVENT_OCCURRED BIT(0)
26 #define SWITCHTEC_EVENT_CLEAR BIT(0)
27 #define SWITCHTEC_EVENT_EN_LOG BIT(1)
28 #define SWITCHTEC_EVENT_EN_CLI BIT(2)
29 #define SWITCHTEC_EVENT_EN_IRQ BIT(3)
30 #define SWITCHTEC_EVENT_FATAL BIT(4)
33 SWITCHTEC_GAS_MRPC_OFFSET = 0x0000,
34 SWITCHTEC_GAS_TOP_CFG_OFFSET = 0x1000,
35 SWITCHTEC_GAS_SW_EVENT_OFFSET = 0x1800,
36 SWITCHTEC_GAS_SYS_INFO_OFFSET = 0x2000,
37 SWITCHTEC_GAS_FLASH_INFO_OFFSET = 0x2200,
38 SWITCHTEC_GAS_PART_CFG_OFFSET = 0x4000,
39 SWITCHTEC_GAS_NTB_OFFSET = 0x10000,
40 SWITCHTEC_GAS_PFF_CSR_OFFSET = 0x134000,
44 u8 input_data[SWITCHTEC_MRPC_PAYLOAD_SIZE];
45 u8 output_data[SWITCHTEC_MRPC_PAYLOAD_SIZE];
52 SWITCHTEC_MRPC_STATUS_INPROGRESS = 1,
53 SWITCHTEC_MRPC_STATUS_DONE = 2,
54 SWITCHTEC_MRPC_STATUS_ERROR = 0xFF,
55 SWITCHTEC_MRPC_STATUS_INTERRUPTED = 0x100,
58 struct sw_event_regs {
59 u64 event_report_ctrl;
61 u64 part_event_bitmap;
65 u32 stack_error_event_hdr;
66 u32 stack_error_event_data;
68 u32 ppu_error_event_hdr;
69 u32 ppu_error_event_data;
71 u32 isp_error_event_hdr;
72 u32 isp_error_event_data;
74 u32 sys_reset_event_hdr;
84 u32 twi_mrpc_comp_hdr;
85 u32 twi_mrpc_comp_data;
87 u32 twi_mrpc_comp_async_hdr;
88 u32 twi_mrpc_comp_async_data;
90 u32 cli_mrpc_comp_hdr;
91 u32 cli_mrpc_comp_data;
93 u32 cli_mrpc_comp_async_hdr;
94 u32 cli_mrpc_comp_async_data;
96 u32 gpio_interrupt_hdr;
97 u32 gpio_interrupt_data;
105 SWITCHTEC_CFG0_RUNNING = 0x04,
106 SWITCHTEC_CFG1_RUNNING = 0x05,
107 SWITCHTEC_IMG0_RUNNING = 0x03,
108 SWITCHTEC_IMG1_RUNNING = 0x07,
111 struct sys_info_regs {
114 u32 firmware_version;
116 u32 vendor_table_revision;
117 u32 table_format_version;
119 u32 cfg_file_fmt_version;
125 char product_revision[4];
126 char component_vendor[8];
128 u8 component_revision;
131 struct flash_info_regs {
132 u32 flash_part_map_upd_idx;
134 struct active_partition_info {
140 struct active_partition_info active_cfg;
141 struct active_partition_info inactive_img;
142 struct active_partition_info inactive_cfg;
146 struct partition_info {
151 struct partition_info cfg1;
152 struct partition_info img0;
153 struct partition_info img1;
154 struct partition_info nvlog;
155 struct partition_info vendor[8];
159 SWITCHTEC_NTB_REG_INFO_OFFSET = 0x0000,
160 SWITCHTEC_NTB_REG_CTRL_OFFSET = 0x4000,
161 SWITCHTEC_NTB_REG_DBMSG_OFFSET = 0x64000,
164 struct ntb_info_regs {
172 struct nt_partition_info {
175 u32 target_part_high;
180 struct part_cfg_regs {
187 u32 dsp_pff_inst_id[47];
189 u16 vep_vector_number;
190 u16 usp_vector_number;
191 u32 port_event_bitmap;
193 u32 part_event_summary;
196 u32 part_reset_data[5];
198 u32 mrpc_comp_data[5];
199 u32 mrpc_comp_async_hdr;
200 u32 mrpc_comp_async_data[5];
202 u32 dyn_binding_data[5];
207 NTB_CTRL_PART_OP_LOCK = 0x1,
208 NTB_CTRL_PART_OP_CFG = 0x2,
209 NTB_CTRL_PART_OP_RESET = 0x3,
211 NTB_CTRL_PART_STATUS_NORMAL = 0x1,
212 NTB_CTRL_PART_STATUS_LOCKED = 0x2,
213 NTB_CTRL_PART_STATUS_LOCKING = 0x3,
214 NTB_CTRL_PART_STATUS_CONFIGURING = 0x4,
215 NTB_CTRL_PART_STATUS_RESETTING = 0x5,
217 NTB_CTRL_BAR_VALID = 1 << 0,
218 NTB_CTRL_BAR_DIR_WIN_EN = 1 << 4,
219 NTB_CTRL_BAR_LUT_WIN_EN = 1 << 5,
221 NTB_CTRL_REQ_ID_EN = 1 << 0,
223 NTB_CTRL_LUT_EN = 1 << 0,
225 NTB_PART_CTRL_ID_PROT_DIS = 1 << 0,
228 struct ntb_ctrl_regs {
229 u32 partition_status;
234 u16 lut_table_entries;
235 u16 lut_table_offset;
237 u16 req_id_table_size;
238 u16 req_id_table_offset;
247 u32 req_id_table[256];
252 #define NTB_DBMSG_IMSG_STATUS BIT_ULL(32)
253 #define NTB_DBMSG_IMSG_MASK BIT_ULL(40)
255 struct ntb_dbmsg_regs {
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,
291 struct pff_csr_regs {
303 u32 pci_subsystem_id;
304 u32 pci_expansion_rom;
308 u32 pci_cap_region[48];
309 u32 pcie_cap_region[448];
310 u32 indirect_gas_window[128];
311 u32 indirect_gas_window_off;
313 u32 pff_event_summary;
316 u32 aer_in_p2p_data[5];
318 u32 aer_in_vep_data[5];
329 u32 threshold_data[5];
331 u32 power_mgmt_data[5];
332 u32 tlp_throttling_hdr;
333 u32 tlp_throttling_data[5];
335 u32 force_speed_data[5];
336 u32 credit_timeout_hdr;
337 u32 credit_timeout_data[5];
339 u32 link_state_data[5];
343 struct switchtec_ntb;
345 struct switchtec_dev {
346 struct pci_dev *pdev;
353 char pff_local[SWITCHTEC_MAX_PFF_CSR];
356 struct mrpc_regs __iomem *mmio_mrpc;
357 struct sw_event_regs __iomem *mmio_sw_event;
358 struct sys_info_regs __iomem *mmio_sys_info;
359 struct flash_info_regs __iomem *mmio_flash_info;
360 struct ntb_info_regs __iomem *mmio_ntb;
361 struct part_cfg_regs __iomem *mmio_part_cfg;
362 struct part_cfg_regs __iomem *mmio_part_cfg_all;
363 struct pff_csr_regs __iomem *mmio_pff_csr;
366 * The mrpc mutex must be held when accessing the other
367 * mrpc_ fields, alive flag and stuser->state field
369 struct mutex mrpc_mutex;
370 struct list_head mrpc_queue;
372 struct work_struct mrpc_work;
373 struct delayed_work mrpc_timeout;
376 wait_queue_head_t event_wq;
379 struct work_struct link_event_work;
380 void (*link_notifier)(struct switchtec_dev *stdev);
381 u8 link_event_count[SWITCHTEC_MAX_PFF_CSR];
383 struct switchtec_ntb *sndev;
386 static inline struct switchtec_dev *to_stdev(struct device *dev)
388 return container_of(dev, struct switchtec_dev, dev);
391 extern struct class *switchtec_class;