2 * Copyright (c) 2015 Linaro Ltd.
3 * Copyright (c) 2015 Hisilicon Limited.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
15 #include <linux/dmapool.h>
16 #include <linux/mfd/syscon.h>
17 #include <linux/module.h>
18 #include <linux/of_address.h>
19 #include <linux/platform_device.h>
20 #include <linux/regmap.h>
21 #include <scsi/libsas.h>
23 #define DRV_VERSION "v1.0"
25 #define HISI_SAS_MAX_PHYS 9
26 #define HISI_SAS_MAX_QUEUES 32
27 #define HISI_SAS_QUEUE_SLOTS 512
28 #define HISI_SAS_MAX_ITCT_ENTRIES 4096
29 #define HISI_SAS_MAX_DEVICES HISI_SAS_MAX_ITCT_ENTRIES
30 #define HISI_SAS_COMMAND_ENTRIES 8192
32 #define HISI_SAS_STATUS_BUF_SZ \
33 (sizeof(struct hisi_sas_err_record) + 1024)
34 #define HISI_SAS_COMMAND_TABLE_SZ \
35 (((sizeof(union hisi_sas_command_table)+3)/4)*4)
37 #define HISI_SAS_MAX_SSP_RESP_SZ (sizeof(struct ssp_frame_hdr) + 1024)
38 #define HISI_SAS_MAX_SMP_RESP_SZ 1028
43 PORT_TYPE_SAS = (1U << 1),
44 PORT_TYPE_SATA = (1U << 0),
52 enum hisi_sas_dev_type {
53 HISI_SAS_DEV_TYPE_STP = 0,
54 HISI_SAS_DEV_TYPE_SSP,
55 HISI_SAS_DEV_TYPE_SATA,
59 struct hisi_hba *hisi_hba;
60 struct hisi_sas_port *port;
61 struct asd_sas_phy sas_phy;
62 struct sas_identify identify;
63 struct timer_list timer;
64 struct work_struct phyup_ws;
65 u64 port_id; /* from hw */
72 enum sas_linkrate minimum_linkrate;
73 enum sas_linkrate maximum_linkrate;
76 struct hisi_sas_port {
77 struct asd_sas_port sas_port;
80 struct list_head list;
84 struct hisi_hba *hisi_hba;
88 struct hisi_sas_device {
89 enum sas_device_type dev_type;
90 struct hisi_hba *hisi_hba;
91 struct domain_device *sas_device;
98 struct hisi_sas_slot {
99 struct list_head entry;
100 struct sas_task *task;
101 struct hisi_sas_port *port;
104 int dlvry_queue_slot;
106 int cmplt_queue_slot;
109 dma_addr_t cmd_hdr_dma;
111 dma_addr_t status_buffer_dma;
113 dma_addr_t command_table_dma;
114 struct hisi_sas_sge_page *sge_page;
115 dma_addr_t sge_page_dma;
118 struct hisi_sas_tmf_task {
120 u16 tag_of_task_to_be_managed;
124 int (*hw_init)(struct hisi_hba *hisi_hba);
125 void (*setup_itct)(struct hisi_hba *hisi_hba,
126 struct hisi_sas_device *device);
127 void (*sl_notify)(struct hisi_hba *hisi_hba, int phy_no);
128 int (*get_free_slot)(struct hisi_hba *hisi_hba, int *q, int *s);
129 void (*start_delivery)(struct hisi_hba *hisi_hba);
130 int (*prep_ssp)(struct hisi_hba *hisi_hba,
131 struct hisi_sas_slot *slot, int is_tmf,
132 struct hisi_sas_tmf_task *tmf);
133 int (*prep_smp)(struct hisi_hba *hisi_hba,
134 struct hisi_sas_slot *slot);
135 int (*slot_complete)(struct hisi_hba *hisi_hba,
136 struct hisi_sas_slot *slot, int abort);
137 void (*phy_enable)(struct hisi_hba *hisi_hba, int phy_no);
138 void (*phy_disable)(struct hisi_hba *hisi_hba, int phy_no);
139 void (*phy_hard_reset)(struct hisi_hba *hisi_hba, int phy_no);
140 void (*free_device)(struct hisi_hba *hisi_hba,
141 struct hisi_sas_device *dev);
142 int (*get_wideport_bitmap)(struct hisi_hba *hisi_hba, int port_id);
143 int complete_hdr_size;
147 /* This must be the first element, used by SHOST_TO_SAS_HA */
148 struct sas_ha_struct *p;
150 struct platform_device *pdev;
154 u32 ctrl_reset_sts_reg;
155 u32 ctrl_clock_ena_reg;
156 u8 sas_addr[SAS_ADDR_SIZE];
162 struct timer_list timer;
163 struct workqueue_struct *wq;
165 int slot_index_count;
166 unsigned long *slot_index_tags;
169 struct sas_ha_struct sha;
170 struct Scsi_Host *shost;
172 struct hisi_sas_cq cq[HISI_SAS_MAX_QUEUES];
173 struct hisi_sas_phy phy[HISI_SAS_MAX_PHYS];
174 struct hisi_sas_port port[HISI_SAS_MAX_PHYS];
178 struct hisi_sas_slot *slot_prep;
180 struct dma_pool *sge_page_pool;
181 struct hisi_sas_device devices[HISI_SAS_MAX_DEVICES];
182 struct dma_pool *command_table_pool;
183 struct dma_pool *status_buffer_pool;
184 struct hisi_sas_cmd_hdr *cmd_hdr[HISI_SAS_MAX_QUEUES];
185 dma_addr_t cmd_hdr_dma[HISI_SAS_MAX_QUEUES];
186 void *complete_hdr[HISI_SAS_MAX_QUEUES];
187 dma_addr_t complete_hdr_dma[HISI_SAS_MAX_QUEUES];
188 struct hisi_sas_initial_fis *initial_fis;
189 dma_addr_t initial_fis_dma;
190 struct hisi_sas_itct *itct;
192 struct hisi_sas_iost *iost;
194 struct hisi_sas_breakpoint *breakpoint;
195 dma_addr_t breakpoint_dma;
196 struct hisi_sas_breakpoint *sata_breakpoint;
197 dma_addr_t sata_breakpoint_dma;
198 struct hisi_sas_slot *slot_info;
199 const struct hisi_sas_hw *hw; /* Low level hw interface */
202 /* Generic HW DMA host memory structures */
203 /* Delivery queue header */
204 struct hisi_sas_cmd_hdr {
215 __le32 transfer_tags;
218 __le32 data_transfer_len;
221 __le32 first_burst_num;
230 __le64 cmd_table_addr;
233 __le64 sts_buffer_addr;
236 __le64 prd_table_addr;
239 __le64 dif_prd_table_addr;
242 struct hisi_sas_itct {
248 __le64 qw_sata_ncq0_3;
249 __le64 qw_sata_ncq7_4;
250 __le64 qw_sata_ncq11_8;
251 __le64 qw_sata_ncq15_12;
252 __le64 qw_sata_ncq19_16;
253 __le64 qw_sata_ncq23_20;
254 __le64 qw_sata_ncq27_24;
255 __le64 qw_sata_ncq31_28;
256 __le64 qw_non_ncq_iptt;
261 struct hisi_sas_iost {
268 struct hisi_sas_err_record {
273 __le32 trans_tx_fail_type;
276 __le32 trans_rx_fail_type;
282 struct hisi_sas_initial_fis {
283 struct hisi_sas_err_record err_record;
284 struct dev_to_host_fis fis;
288 struct hisi_sas_breakpoint {
289 u8 data[128]; /*io128 byte*/
292 struct hisi_sas_sge {
300 struct hisi_sas_command_table_smp {
304 struct hisi_sas_command_table_stp {
305 struct host_to_dev_fis command_fis;
307 u8 atapi_cdb[ATAPI_CDB_LEN];
310 #define HISI_SAS_SGE_PAGE_CNT SCSI_MAX_SG_SEGMENTS
311 struct hisi_sas_sge_page {
312 struct hisi_sas_sge sge[HISI_SAS_SGE_PAGE_CNT];
315 struct hisi_sas_command_table_ssp {
316 struct ssp_frame_hdr hdr;
319 struct ssp_command_iu task;
322 struct ssp_tmf_iu ssp_task;
323 struct xfer_rdy_iu xfer_rdy;
324 struct ssp_response_iu ssp_res;
328 union hisi_sas_command_table {
329 struct hisi_sas_command_table_ssp ssp;
330 struct hisi_sas_command_table_smp smp;
331 struct hisi_sas_command_table_stp stp;
333 extern int hisi_sas_probe(struct platform_device *pdev,
334 const struct hisi_sas_hw *ops);
335 extern int hisi_sas_remove(struct platform_device *pdev);
337 extern void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy);
338 extern void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba,
339 struct sas_task *task,
340 struct hisi_sas_slot *slot);