1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
|
/*
* Copyright (c) 2015 Linaro Ltd.
* Copyright (c) 2015 Hisilicon Limited.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
*/
#include "hisi_sas.h"
#define DRV_NAME "hisi_sas"
static struct scsi_transport_template *hisi_sas_stt;
static struct scsi_host_template hisi_sas_sht = {
.module = THIS_MODULE,
.name = DRV_NAME,
.queuecommand = sas_queuecommand,
.target_alloc = sas_target_alloc,
.slave_configure = sas_slave_configure,
.change_queue_depth = sas_change_queue_depth,
.bios_param = sas_bios_param,
.can_queue = 1,
.this_id = -1,
.sg_tablesize = SG_ALL,
.max_sectors = SCSI_DEFAULT_MAX_SECTORS,
.use_clustering = ENABLE_CLUSTERING,
.eh_device_reset_handler = sas_eh_device_reset_handler,
.eh_bus_reset_handler = sas_eh_bus_reset_handler,
.target_destroy = sas_target_destroy,
.ioctl = sas_ioctl,
};
static struct sas_domain_function_template hisi_sas_transport_ops = {
};
static int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost)
{
int i, s;
struct platform_device *pdev = hisi_hba->pdev;
struct device *dev = &pdev->dev;
for (i = 0; i < hisi_hba->queue_count; i++) {
/* Delivery queue */
s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
hisi_hba->cmd_hdr[i] = dma_alloc_coherent(dev, s,
&hisi_hba->cmd_hdr_dma[i], GFP_KERNEL);
if (!hisi_hba->cmd_hdr[i])
goto err_out;
memset(hisi_hba->cmd_hdr[i], 0, s);
/* Completion queue */
s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
hisi_hba->complete_hdr[i] = dma_alloc_coherent(dev, s,
&hisi_hba->complete_hdr_dma[i], GFP_KERNEL);
if (!hisi_hba->complete_hdr[i])
goto err_out;
memset(hisi_hba->complete_hdr[i], 0, s);
}
s = HISI_SAS_STATUS_BUF_SZ;
hisi_hba->status_buffer_pool = dma_pool_create("status_buffer",
dev, s, 16, 0);
if (!hisi_hba->status_buffer_pool)
goto err_out;
s = HISI_SAS_COMMAND_TABLE_SZ;
hisi_hba->command_table_pool = dma_pool_create("command_table",
dev, s, 16, 0);
if (!hisi_hba->command_table_pool)
goto err_out;
s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
hisi_hba->itct = dma_alloc_coherent(dev, s, &hisi_hba->itct_dma,
GFP_KERNEL);
if (!hisi_hba->itct)
goto err_out;
memset(hisi_hba->itct, 0, s);
hisi_hba->slot_info = devm_kcalloc(dev, HISI_SAS_COMMAND_ENTRIES,
sizeof(struct hisi_sas_slot),
GFP_KERNEL);
if (!hisi_hba->slot_info)
goto err_out;
s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_iost);
hisi_hba->iost = dma_alloc_coherent(dev, s, &hisi_hba->iost_dma,
GFP_KERNEL);
if (!hisi_hba->iost)
goto err_out;
memset(hisi_hba->iost, 0, s);
s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_breakpoint);
hisi_hba->breakpoint = dma_alloc_coherent(dev, s,
&hisi_hba->breakpoint_dma, GFP_KERNEL);
if (!hisi_hba->breakpoint)
goto err_out;
memset(hisi_hba->breakpoint, 0, s);
hisi_hba->sge_page_pool = dma_pool_create("status_sge", dev,
sizeof(struct hisi_sas_sge_page), 16, 0);
if (!hisi_hba->sge_page_pool)
goto err_out;
s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
hisi_hba->initial_fis = dma_alloc_coherent(dev, s,
&hisi_hba->initial_fis_dma, GFP_KERNEL);
if (!hisi_hba->initial_fis)
goto err_out;
memset(hisi_hba->initial_fis, 0, s);
s = HISI_SAS_COMMAND_ENTRIES * sizeof(struct hisi_sas_breakpoint) * 2;
hisi_hba->sata_breakpoint = dma_alloc_coherent(dev, s,
&hisi_hba->sata_breakpoint_dma, GFP_KERNEL);
if (!hisi_hba->sata_breakpoint)
goto err_out;
memset(hisi_hba->sata_breakpoint, 0, s);
return 0;
err_out:
return -ENOMEM;
}
static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
const struct hisi_sas_hw *hw)
{
struct resource *res;
struct Scsi_Host *shost;
struct hisi_hba *hisi_hba;
struct device *dev = &pdev->dev;
struct device_node *np = pdev->dev.of_node;
struct property *sas_addr_prop;
int num;
shost = scsi_host_alloc(&hisi_sas_sht, sizeof(*hisi_hba));
if (!shost)
goto err_out;
hisi_hba = shost_priv(shost);
hisi_hba->hw = hw;
hisi_hba->pdev = pdev;
hisi_hba->shost = shost;
SHOST_TO_SAS_HA(shost) = &hisi_hba->sha;
sas_addr_prop = of_find_property(np, "sas-addr", NULL);
if (!sas_addr_prop || (sas_addr_prop->length != SAS_ADDR_SIZE))
goto err_out;
memcpy(hisi_hba->sas_addr, sas_addr_prop->value, SAS_ADDR_SIZE);
if (of_property_read_u32(np, "ctrl-reset-reg",
&hisi_hba->ctrl_reset_reg))
goto err_out;
if (of_property_read_u32(np, "ctrl-reset-sts-reg",
&hisi_hba->ctrl_reset_sts_reg))
goto err_out;
if (of_property_read_u32(np, "ctrl-clock-ena-reg",
&hisi_hba->ctrl_clock_ena_reg))
goto err_out;
if (of_property_read_u32(np, "phy-count", &hisi_hba->n_phy))
goto err_out;
if (of_property_read_u32(np, "queue-count", &hisi_hba->queue_count))
goto err_out;
num = of_irq_count(np);
hisi_hba->int_names = devm_kcalloc(dev, num,
HISI_SAS_NAME_LEN,
GFP_KERNEL);
if (!hisi_hba->int_names)
goto err_out;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
hisi_hba->regs = devm_ioremap_resource(dev, res);
if (IS_ERR(hisi_hba->regs))
goto err_out;
hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(
np, "hisilicon,sas-syscon");
if (IS_ERR(hisi_hba->ctrl))
goto err_out;
if (hisi_sas_alloc(hisi_hba, shost))
goto err_out;
return shost;
err_out:
dev_err(dev, "shost alloc failed\n");
return NULL;
}
int hisi_sas_probe(struct platform_device *pdev,
const struct hisi_sas_hw *hw)
{
struct Scsi_Host *shost;
struct hisi_hba *hisi_hba;
struct device *dev = &pdev->dev;
struct asd_sas_phy **arr_phy;
struct asd_sas_port **arr_port;
struct sas_ha_struct *sha;
int rc, phy_nr, port_nr, i;
shost = hisi_sas_shost_alloc(pdev, hw);
if (!shost) {
rc = -ENOMEM;
goto err_out_ha;
}
sha = SHOST_TO_SAS_HA(shost);
hisi_hba = shost_priv(shost);
platform_set_drvdata(pdev, sha);
phy_nr = port_nr = hisi_hba->n_phy;
arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL);
arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL);
if (!arr_phy || !arr_port)
return -ENOMEM;
sha->sas_phy = arr_phy;
sha->sas_port = arr_port;
sha->core.shost = shost;
sha->lldd_ha = hisi_hba;
shost->transportt = hisi_sas_stt;
shost->max_id = HISI_SAS_MAX_DEVICES;
shost->max_lun = ~0;
shost->max_channel = 1;
shost->max_cmd_len = 16;
shost->sg_tablesize = min_t(u16, SG_ALL, HISI_SAS_SGE_PAGE_CNT);
shost->can_queue = HISI_SAS_COMMAND_ENTRIES;
shost->cmd_per_lun = HISI_SAS_COMMAND_ENTRIES;
sha->sas_ha_name = DRV_NAME;
sha->dev = &hisi_hba->pdev->dev;
sha->lldd_module = THIS_MODULE;
sha->sas_addr = &hisi_hba->sas_addr[0];
sha->num_phys = hisi_hba->n_phy;
sha->core.shost = hisi_hba->shost;
for (i = 0; i < hisi_hba->n_phy; i++) {
sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy;
sha->sas_port[i] = &hisi_hba->port[i].sas_port;
}
rc = scsi_add_host(shost, &pdev->dev);
if (rc)
goto err_out_ha;
rc = sas_register_ha(sha);
if (rc)
goto err_out_register_ha;
scsi_scan_host(shost);
return 0;
err_out_register_ha:
scsi_remove_host(shost);
err_out_ha:
kfree(shost);
return rc;
}
EXPORT_SYMBOL_GPL(hisi_sas_probe);
static __init int hisi_sas_init(void)
{
pr_info("hisi_sas: driver version %s\n", DRV_VERSION);
hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops);
if (!hisi_sas_stt)
return -ENOMEM;
return 0;
}
static __exit void hisi_sas_exit(void)
{
sas_release_transport(hisi_sas_stt);
}
module_init(hisi_sas_init);
module_exit(hisi_sas_exit);
MODULE_VERSION(DRV_VERSION);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
MODULE_DESCRIPTION("HISILICON SAS controller driver");
MODULE_ALIAS("platform:" DRV_NAME);
|
