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1#ifndef _SPARC64_VIO_H
2#define _SPARC64_VIO_H
3
4#include <linux/kernel.h>
5#include <linux/device.h>
6#include <linux/mod_devicetable.h>
7#include <linux/timer.h>
8#include <linux/spinlock.h>
9#include <linux/completion.h>
10#include <linux/list.h>
11#include <linux/log2.h>
12
13#include <asm/ldc.h>
14#include <asm/mdesc.h>
15
16struct vio_msg_tag {
17 u8 type;
18#define VIO_TYPE_CTRL 0x01
19#define VIO_TYPE_DATA 0x02
20#define VIO_TYPE_ERR 0x04
21
22 u8 stype;
23#define VIO_SUBTYPE_INFO 0x01
24#define VIO_SUBTYPE_ACK 0x02
25#define VIO_SUBTYPE_NACK 0x04
26
27 u16 stype_env;
28#define VIO_VER_INFO 0x0001
29#define VIO_ATTR_INFO 0x0002
30#define VIO_DRING_REG 0x0003
31#define VIO_DRING_UNREG 0x0004
32#define VIO_RDX 0x0005
33#define VIO_PKT_DATA 0x0040
34#define VIO_DESC_DATA 0x0041
35#define VIO_DRING_DATA 0x0042
36#define VNET_MCAST_INFO 0x0101
37
38 u32 sid;
39};
40
41struct vio_rdx {
42 struct vio_msg_tag tag;
43 u64 resv[6];
44};
45
46struct vio_ver_info {
47 struct vio_msg_tag tag;
48 u16 major;
49 u16 minor;
50 u8 dev_class;
51#define VDEV_NETWORK 0x01
52#define VDEV_NETWORK_SWITCH 0x02
53#define VDEV_DISK 0x03
54#define VDEV_DISK_SERVER 0x04
55
56 u8 resv1[3];
57 u64 resv2[5];
58};
59
60struct vio_dring_register {
61 struct vio_msg_tag tag;
62 u64 dring_ident;
63 u32 num_descr;
64 u32 descr_size;
65 u16 options;
66#define VIO_TX_DRING 0x0001
67#define VIO_RX_DRING 0x0002
68 u16 resv;
69 u32 num_cookies;
70 struct ldc_trans_cookie cookies[0];
71};
72
73struct vio_dring_unregister {
74 struct vio_msg_tag tag;
75 u64 dring_ident;
76 u64 resv[5];
77};
78
79/* Data transfer modes */
80#define VIO_PKT_MODE 0x01 /* Packet based transfer */
81#define VIO_DESC_MODE 0x02 /* In-band descriptors */
82#define VIO_DRING_MODE 0x03 /* Descriptor rings */
83
84struct vio_dring_data {
85 struct vio_msg_tag tag;
86 u64 seq;
87 u64 dring_ident;
88 u32 start_idx;
89 u32 end_idx;
90 u8 state;
91#define VIO_DRING_ACTIVE 0x01
92#define VIO_DRING_STOPPED 0x02
93
94 u8 __pad1;
95 u16 __pad2;
96 u32 __pad3;
97 u64 __par4[2];
98};
99
100struct vio_dring_hdr {
101 u8 state;
102#define VIO_DESC_FREE 0x01
103#define VIO_DESC_READY 0x02
104#define VIO_DESC_ACCEPTED 0x03
105#define VIO_DESC_DONE 0x04
106 u8 ack;
107#define VIO_ACK_ENABLE 0x01
108#define VIO_ACK_DISABLE 0x00
109
110 u16 __pad1;
111 u32 __pad2;
112};
113
114/* VIO disk specific structures and defines */
115struct vio_disk_attr_info {
116 struct vio_msg_tag tag;
117 u8 xfer_mode;
118 u8 vdisk_type;
119#define VD_DISK_TYPE_SLICE 0x01 /* Slice in block device */
120#define VD_DISK_TYPE_DISK 0x02 /* Entire block device */
121 u16 resv1;
122 u32 vdisk_block_size;
123 u64 operations;
124 u64 vdisk_size;
125 u64 max_xfer_size;
126 u64 resv2[2];
127};
128
129struct vio_disk_desc {
130 struct vio_dring_hdr hdr;
131 u64 req_id;
132 u8 operation;
133#define VD_OP_BREAD 0x01 /* Block read */
134#define VD_OP_BWRITE 0x02 /* Block write */
135#define VD_OP_FLUSH 0x03 /* Flush disk contents */
136#define VD_OP_GET_WCE 0x04 /* Get write-cache status */
137#define VD_OP_SET_WCE 0x05 /* Enable/disable write-cache */
138#define VD_OP_GET_VTOC 0x06 /* Get VTOC */
139#define VD_OP_SET_VTOC 0x07 /* Set VTOC */
140#define VD_OP_GET_DISKGEOM 0x08 /* Get disk geometry */
141#define VD_OP_SET_DISKGEOM 0x09 /* Set disk geometry */
142#define VD_OP_SCSICMD 0x0a /* SCSI control command */
143#define VD_OP_GET_DEVID 0x0b /* Get device ID */
144#define VD_OP_GET_EFI 0x0c /* Get EFI */
145#define VD_OP_SET_EFI 0x0d /* Set EFI */
146 u8 slice;
147 u16 resv1;
148 u32 status;
149 u64 offset;
150 u64 size;
151 u32 ncookies;
152 u32 resv2;
153 struct ldc_trans_cookie cookies[0];
154};
155
156#define VIO_DISK_VNAME_LEN 8
157#define VIO_DISK_ALABEL_LEN 128
158#define VIO_DISK_NUM_PART 8
159
160struct vio_disk_vtoc {
161 u8 volume_name[VIO_DISK_VNAME_LEN];
162 u16 sector_size;
163 u16 num_partitions;
164 u8 ascii_label[VIO_DISK_ALABEL_LEN];
165 struct {
166 u16 id;
167 u16 perm_flags;
168 u32 resv;
169 u64 start_block;
170 u64 num_blocks;
171 } partitions[VIO_DISK_NUM_PART];
172};
173
174struct vio_disk_geom {
175 u16 num_cyl; /* Num data cylinders */
176 u16 alt_cyl; /* Num alternate cylinders */
177 u16 beg_cyl; /* Cyl off of fixed head area */
178 u16 num_hd; /* Num heads */
179 u16 num_sec; /* Num sectors */
180 u16 ifact; /* Interleave factor */
181 u16 apc; /* Alts per cylinder (SCSI) */
182 u16 rpm; /* Revolutions per minute */
183 u16 phy_cyl; /* Num physical cylinders */
184 u16 wr_skip; /* Num sects to skip, writes */
185 u16 rd_skip; /* Num sects to skip, writes */
186};
187
188struct vio_disk_devid {
189 u16 resv;
190 u16 type;
191 u32 len;
192 char id[0];
193};
194
195struct vio_disk_efi {
196 u64 lba;
197 u64 len;
198 char data[0];
199};
200
201/* VIO net specific structures and defines */
202struct vio_net_attr_info {
203 struct vio_msg_tag tag;
204 u8 xfer_mode;
205 u8 addr_type;
206#define VNET_ADDR_ETHERMAC 0x01
207 u16 ack_freq;
208 u32 resv1;
209 u64 addr;
210 u64 mtu;
211 u64 resv2[3];
212};
213
214#define VNET_NUM_MCAST 7
215
216struct vio_net_mcast_info {
217 struct vio_msg_tag tag;
218 u8 set;
219 u8 count;
220 u8 mcast_addr[VNET_NUM_MCAST * 6];
221 u32 resv;
222};
223
224struct vio_net_desc {
225 struct vio_dring_hdr hdr;
226 u32 size;
227 u32 ncookies;
228 struct ldc_trans_cookie cookies[0];
229};
230
231#define VIO_MAX_RING_COOKIES 24
232
233struct vio_dring_state {
234 u64 ident;
235 void *base;
236 u64 snd_nxt;
237 u64 rcv_nxt;
238 u32 entry_size;
239 u32 num_entries;
240 u32 prod;
241 u32 cons;
242 u32 pending;
243 int ncookies;
244 struct ldc_trans_cookie cookies[VIO_MAX_RING_COOKIES];
245};
246
247static inline void *vio_dring_cur(struct vio_dring_state *dr)
248{
249 return dr->base + (dr->entry_size * dr->prod);
250}
251
252static inline void *vio_dring_entry(struct vio_dring_state *dr,
253 unsigned int index)
254{
255 return dr->base + (dr->entry_size * index);
256}
257
258static inline u32 vio_dring_avail(struct vio_dring_state *dr,
259 unsigned int ring_size)
260{
261 return (dr->pending -
262 ((dr->prod - dr->cons) & (ring_size - 1)));
263}
264
265#define VIO_MAX_TYPE_LEN 32
266#define VIO_MAX_COMPAT_LEN 64
267
268struct vio_dev {
269 u64 mp;
270 struct device_node *dp;
271
272 char type[VIO_MAX_TYPE_LEN];
273 char compat[VIO_MAX_COMPAT_LEN];
274 int compat_len;
275
276 u64 dev_no;
277
278 unsigned long channel_id;
279
280 unsigned int tx_irq;
281 unsigned int rx_irq;
282
283 struct device dev;
284};
285
286struct vio_driver {
287 struct list_head node;
288 const struct vio_device_id *id_table;
289 int (*probe)(struct vio_dev *dev, const struct vio_device_id *id);
290 int (*remove)(struct vio_dev *dev);
291 void (*shutdown)(struct vio_dev *dev);
292 unsigned long driver_data;
293 struct device_driver driver;
294};
295
296struct vio_version {
297 u16 major;
298 u16 minor;
299};
300
301struct vio_driver_state;
302struct vio_driver_ops {
303 int (*send_attr)(struct vio_driver_state *vio);
304 int (*handle_attr)(struct vio_driver_state *vio, void *pkt);
305 void (*handshake_complete)(struct vio_driver_state *vio);
306};
307
308struct vio_completion {
309 struct completion com;
310 int err;
311 int waiting_for;
312};
313
314struct vio_driver_state {
315 /* Protects VIO handshake and, optionally, driver private state. */
316 spinlock_t lock;
317
318 struct ldc_channel *lp;
319
320 u32 _peer_sid;
321 u32 _local_sid;
322 struct vio_dring_state drings[2];
323#define VIO_DRIVER_TX_RING 0
324#define VIO_DRIVER_RX_RING 1
325
326 u8 hs_state;
327#define VIO_HS_INVALID 0x00
328#define VIO_HS_GOTVERS 0x01
329#define VIO_HS_GOT_ATTR 0x04
330#define VIO_HS_SENT_DREG 0x08
331#define VIO_HS_SENT_RDX 0x10
332#define VIO_HS_GOT_RDX_ACK 0x20
333#define VIO_HS_GOT_RDX 0x40
334#define VIO_HS_SENT_RDX_ACK 0x80
335#define VIO_HS_COMPLETE (VIO_HS_GOT_RDX_ACK | VIO_HS_SENT_RDX_ACK)
336
337 u8 dev_class;
338
339 u8 dr_state;
340#define VIO_DR_STATE_TXREG 0x01
341#define VIO_DR_STATE_RXREG 0x02
342#define VIO_DR_STATE_TXREQ 0x10
343#define VIO_DR_STATE_RXREQ 0x20
344
345 u8 debug;
346#define VIO_DEBUG_HS 0x01
347#define VIO_DEBUG_DATA 0x02
348
349 void *desc_buf;
350 unsigned int desc_buf_len;
351
352 struct vio_completion *cmp;
353
354 struct vio_dev *vdev;
355
356 struct timer_list timer;
357
358 struct vio_version ver;
359
360 struct vio_version *ver_table;
361 int ver_table_entries;
362
363 char *name;
364
365 struct vio_driver_ops *ops;
366};
367
368#define viodbg(TYPE, f, a...) \
369do { if (vio->debug & VIO_DEBUG_##TYPE) \
370 printk(KERN_INFO "vio: ID[%lu] " f, \
371 vio->vdev->channel_id, ## a); \
372} while (0)
373
374extern int vio_register_driver(struct vio_driver *drv);
375extern void vio_unregister_driver(struct vio_driver *drv);
376
377static inline struct vio_driver *to_vio_driver(struct device_driver *drv)
378{
379 return container_of(drv, struct vio_driver, driver);
380}
381
382static inline struct vio_dev *to_vio_dev(struct device *dev)
383{
384 return container_of(dev, struct vio_dev, dev);
385}
386
387extern int vio_ldc_send(struct vio_driver_state *vio, void *data, int len);
388extern void vio_link_state_change(struct vio_driver_state *vio, int event);
389extern void vio_conn_reset(struct vio_driver_state *vio);
390extern int vio_control_pkt_engine(struct vio_driver_state *vio, void *pkt);
391extern int vio_validate_sid(struct vio_driver_state *vio,
392 struct vio_msg_tag *tp);
393extern u32 vio_send_sid(struct vio_driver_state *vio);
394extern int vio_ldc_alloc(struct vio_driver_state *vio,
395 struct ldc_channel_config *base_cfg, void *event_arg);
396extern void vio_ldc_free(struct vio_driver_state *vio);
397extern int vio_driver_init(struct vio_driver_state *vio, struct vio_dev *vdev,
398 u8 dev_class, struct vio_version *ver_table,
399 int ver_table_size, struct vio_driver_ops *ops,
400 char *name);
401
402extern void vio_port_up(struct vio_driver_state *vio);
403
404#endif /* _SPARC64_VIO_H */
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _SPARC64_VIO_H
3#define _SPARC64_VIO_H
4
5#include <linux/kernel.h>
6#include <linux/device.h>
7#include <linux/mod_devicetable.h>
8#include <linux/timer.h>
9#include <linux/spinlock.h>
10#include <linux/completion.h>
11#include <linux/list.h>
12#include <linux/log2.h>
13
14#include <asm/ldc.h>
15#include <asm/mdesc.h>
16
17struct vio_msg_tag {
18 u8 type;
19#define VIO_TYPE_CTRL 0x01
20#define VIO_TYPE_DATA 0x02
21#define VIO_TYPE_ERR 0x04
22
23 u8 stype;
24#define VIO_SUBTYPE_INFO 0x01
25#define VIO_SUBTYPE_ACK 0x02
26#define VIO_SUBTYPE_NACK 0x04
27
28 u16 stype_env;
29#define VIO_VER_INFO 0x0001
30#define VIO_ATTR_INFO 0x0002
31#define VIO_DRING_REG 0x0003
32#define VIO_DRING_UNREG 0x0004
33#define VIO_RDX 0x0005
34#define VIO_PKT_DATA 0x0040
35#define VIO_DESC_DATA 0x0041
36#define VIO_DRING_DATA 0x0042
37#define VNET_MCAST_INFO 0x0101
38
39 u32 sid;
40};
41
42struct vio_rdx {
43 struct vio_msg_tag tag;
44 u64 resv[6];
45};
46
47struct vio_ver_info {
48 struct vio_msg_tag tag;
49 u16 major;
50 u16 minor;
51 u8 dev_class;
52#define VDEV_NETWORK 0x01
53#define VDEV_NETWORK_SWITCH 0x02
54#define VDEV_DISK 0x03
55#define VDEV_DISK_SERVER 0x04
56#define VDEV_CONSOLE_CON 0x05
57
58 u8 resv1[3];
59 u64 resv2[5];
60};
61
62struct vio_dring_register {
63 struct vio_msg_tag tag;
64 u64 dring_ident;
65 u32 num_descr;
66 u32 descr_size;
67 u16 options;
68#define VIO_TX_DRING 0x0001
69#define VIO_RX_DRING 0x0002
70#define VIO_RX_DRING_DATA 0x0004
71 u16 resv;
72 u32 num_cookies;
73 struct ldc_trans_cookie cookies[];
74};
75
76struct vio_dring_unregister {
77 struct vio_msg_tag tag;
78 u64 dring_ident;
79 u64 resv[5];
80};
81
82/* Data transfer modes */
83#define VIO_PKT_MODE 0x01 /* Packet based transfer */
84#define VIO_DESC_MODE 0x02 /* In-band descriptors */
85#define VIO_DRING_MODE 0x03 /* Descriptor rings */
86/* in vers >= 1.2, VIO_DRING_MODE is 0x04 and transfer mode is a bitmask */
87#define VIO_NEW_DRING_MODE 0x04
88
89struct vio_dring_data {
90 struct vio_msg_tag tag;
91 u64 seq;
92 u64 dring_ident;
93 u32 start_idx;
94 u32 end_idx;
95 u8 state;
96#define VIO_DRING_ACTIVE 0x01
97#define VIO_DRING_STOPPED 0x02
98
99 u8 __pad1;
100 u16 __pad2;
101 u32 __pad3;
102 u64 __par4[2];
103};
104
105struct vio_dring_hdr {
106 u8 state;
107#define VIO_DESC_FREE 0x01
108#define VIO_DESC_READY 0x02
109#define VIO_DESC_ACCEPTED 0x03
110#define VIO_DESC_DONE 0x04
111 u8 ack;
112#define VIO_ACK_ENABLE 0x01
113#define VIO_ACK_DISABLE 0x00
114
115 u16 __pad1;
116 u32 __pad2;
117};
118
119/* VIO disk specific structures and defines */
120struct vio_disk_attr_info {
121 struct vio_msg_tag tag;
122 u8 xfer_mode;
123 u8 vdisk_type;
124#define VD_DISK_TYPE_SLICE 0x01 /* Slice in block device */
125#define VD_DISK_TYPE_DISK 0x02 /* Entire block device */
126 u8 vdisk_mtype; /* v1.1 */
127#define VD_MEDIA_TYPE_FIXED 0x01 /* Fixed device */
128#define VD_MEDIA_TYPE_CD 0x02 /* CD Device */
129#define VD_MEDIA_TYPE_DVD 0x03 /* DVD Device */
130 u8 resv1;
131 u32 vdisk_block_size;
132 u64 operations;
133 u64 vdisk_size; /* v1.1 */
134 u64 max_xfer_size;
135 u32 phys_block_size; /* v1.2 */
136 u32 resv2;
137 u64 resv3[1];
138};
139
140struct vio_disk_desc {
141 struct vio_dring_hdr hdr;
142 u64 req_id;
143 u8 operation;
144#define VD_OP_BREAD 0x01 /* Block read */
145#define VD_OP_BWRITE 0x02 /* Block write */
146#define VD_OP_FLUSH 0x03 /* Flush disk contents */
147#define VD_OP_GET_WCE 0x04 /* Get write-cache status */
148#define VD_OP_SET_WCE 0x05 /* Enable/disable write-cache */
149#define VD_OP_GET_VTOC 0x06 /* Get VTOC */
150#define VD_OP_SET_VTOC 0x07 /* Set VTOC */
151#define VD_OP_GET_DISKGEOM 0x08 /* Get disk geometry */
152#define VD_OP_SET_DISKGEOM 0x09 /* Set disk geometry */
153#define VD_OP_SCSICMD 0x0a /* SCSI control command */
154#define VD_OP_GET_DEVID 0x0b /* Get device ID */
155#define VD_OP_GET_EFI 0x0c /* Get EFI */
156#define VD_OP_SET_EFI 0x0d /* Set EFI */
157 u8 slice;
158 u16 resv1;
159 u32 status;
160 u64 offset;
161 u64 size;
162 u32 ncookies;
163 u32 resv2;
164 struct ldc_trans_cookie cookies[];
165};
166
167#define VIO_DISK_VNAME_LEN 8
168#define VIO_DISK_ALABEL_LEN 128
169#define VIO_DISK_NUM_PART 8
170
171struct vio_disk_vtoc {
172 u8 volume_name[VIO_DISK_VNAME_LEN];
173 u16 sector_size;
174 u16 num_partitions;
175 u8 ascii_label[VIO_DISK_ALABEL_LEN];
176 struct {
177 u16 id;
178 u16 perm_flags;
179 u32 resv;
180 u64 start_block;
181 u64 num_blocks;
182 } partitions[VIO_DISK_NUM_PART];
183};
184
185struct vio_disk_geom {
186 u16 num_cyl; /* Num data cylinders */
187 u16 alt_cyl; /* Num alternate cylinders */
188 u16 beg_cyl; /* Cyl off of fixed head area */
189 u16 num_hd; /* Num heads */
190 u16 num_sec; /* Num sectors */
191 u16 ifact; /* Interleave factor */
192 u16 apc; /* Alts per cylinder (SCSI) */
193 u16 rpm; /* Revolutions per minute */
194 u16 phy_cyl; /* Num physical cylinders */
195 u16 wr_skip; /* Num sects to skip, writes */
196 u16 rd_skip; /* Num sects to skip, writes */
197};
198
199struct vio_disk_devid {
200 u16 resv;
201 u16 type;
202 u32 len;
203 char id[];
204};
205
206struct vio_disk_efi {
207 u64 lba;
208 u64 len;
209 char data[];
210};
211
212/* VIO net specific structures and defines */
213struct vio_net_attr_info {
214 struct vio_msg_tag tag;
215 u8 xfer_mode;
216 u8 addr_type;
217#define VNET_ADDR_ETHERMAC 0x01
218 u16 ack_freq;
219 u8 plnk_updt;
220#define PHYSLINK_UPDATE_NONE 0x00
221#define PHYSLINK_UPDATE_STATE 0x01
222#define PHYSLINK_UPDATE_STATE_ACK 0x02
223#define PHYSLINK_UPDATE_STATE_NACK 0x03
224 u8 options;
225 u16 resv1;
226 u64 addr;
227 u64 mtu;
228 u16 cflags;
229#define VNET_LSO_IPV4_CAPAB 0x0001
230 u16 ipv4_lso_maxlen;
231 u32 resv2;
232 u64 resv3[2];
233};
234
235#define VNET_NUM_MCAST 7
236
237struct vio_net_mcast_info {
238 struct vio_msg_tag tag;
239 u8 set;
240 u8 count;
241 u8 mcast_addr[VNET_NUM_MCAST * 6];
242 u32 resv;
243};
244
245struct vio_net_desc {
246 struct vio_dring_hdr hdr;
247 u32 size;
248 u32 ncookies;
249 struct ldc_trans_cookie cookies[];
250};
251
252struct vio_net_dext {
253 u8 flags;
254#define VNET_PKT_HASH 0x01
255#define VNET_PKT_HCK_IPV4_HDRCKSUM 0x02
256#define VNET_PKT_HCK_FULLCKSUM 0x04
257#define VNET_PKT_IPV4_LSO 0x08
258#define VNET_PKT_HCK_IPV4_HDRCKSUM_OK 0x10
259#define VNET_PKT_HCK_FULLCKSUM_OK 0x20
260
261 u8 vnet_hashval;
262 u16 ipv4_lso_mss;
263 u32 resv3;
264};
265
266static inline struct vio_net_dext *vio_net_ext(struct vio_net_desc *desc)
267{
268 return (struct vio_net_dext *)&desc->cookies[2];
269}
270
271#define VIO_MAX_RING_COOKIES 24
272
273struct vio_dring_state {
274 u64 ident;
275 void *base;
276 u64 snd_nxt;
277 u64 rcv_nxt;
278 u32 entry_size;
279 u32 num_entries;
280 u32 prod;
281 u32 cons;
282 u32 pending;
283 int ncookies;
284 struct ldc_trans_cookie cookies[VIO_MAX_RING_COOKIES];
285};
286
287#define VIO_TAG_SIZE (sizeof(struct vio_msg_tag))
288#define VIO_VCC_MTU_SIZE (LDC_PACKET_SIZE - VIO_TAG_SIZE)
289
290struct vio_vcc {
291 struct vio_msg_tag tag;
292 char data[VIO_VCC_MTU_SIZE];
293};
294
295static inline void *vio_dring_cur(struct vio_dring_state *dr)
296{
297 return dr->base + (dr->entry_size * dr->prod);
298}
299
300static inline void *vio_dring_entry(struct vio_dring_state *dr,
301 unsigned int index)
302{
303 return dr->base + (dr->entry_size * index);
304}
305
306static inline u32 vio_dring_avail(struct vio_dring_state *dr,
307 unsigned int ring_size)
308{
309 return (dr->pending -
310 ((dr->prod - dr->cons) & (ring_size - 1)) - 1);
311}
312
313static inline u32 vio_dring_next(struct vio_dring_state *dr, u32 index)
314{
315 if (++index == dr->num_entries)
316 index = 0;
317 return index;
318}
319
320static inline u32 vio_dring_prev(struct vio_dring_state *dr, u32 index)
321{
322 if (index == 0)
323 return dr->num_entries - 1;
324 else
325 return index - 1;
326}
327
328#define VIO_MAX_TYPE_LEN 32
329#define VIO_MAX_NAME_LEN 32
330#define VIO_MAX_COMPAT_LEN 64
331
332struct vio_dev {
333 u64 mp;
334 struct device_node *dp;
335
336 char node_name[VIO_MAX_NAME_LEN];
337 char type[VIO_MAX_TYPE_LEN];
338 char compat[VIO_MAX_COMPAT_LEN];
339 int compat_len;
340
341 u64 dev_no;
342
343 unsigned long port_id;
344 unsigned long channel_id;
345
346 unsigned int tx_irq;
347 unsigned int rx_irq;
348 u64 rx_ino;
349 u64 tx_ino;
350
351 /* Handle to the root of "channel-devices" sub-tree in MDESC */
352 u64 cdev_handle;
353
354 /* MD specific data used to identify the vdev in MD */
355 union md_node_info md_node_info;
356
357 struct device dev;
358};
359
360struct vio_driver {
361 const char *name;
362 struct list_head node;
363 const struct vio_device_id *id_table;
364 int (*probe)(struct vio_dev *dev, const struct vio_device_id *id);
365 void (*remove)(struct vio_dev *dev);
366 void (*shutdown)(struct vio_dev *dev);
367 unsigned long driver_data;
368 struct device_driver driver;
369 bool no_irq;
370};
371
372struct vio_version {
373 u16 major;
374 u16 minor;
375};
376
377struct vio_driver_state;
378struct vio_driver_ops {
379 int (*send_attr)(struct vio_driver_state *vio);
380 int (*handle_attr)(struct vio_driver_state *vio, void *pkt);
381 void (*handshake_complete)(struct vio_driver_state *vio);
382};
383
384struct vio_completion {
385 struct completion com;
386 int err;
387 int waiting_for;
388};
389
390struct vio_driver_state {
391 /* Protects VIO handshake and, optionally, driver private state. */
392 spinlock_t lock;
393
394 struct ldc_channel *lp;
395
396 u32 _peer_sid;
397 u32 _local_sid;
398 struct vio_dring_state drings[2];
399#define VIO_DRIVER_TX_RING 0
400#define VIO_DRIVER_RX_RING 1
401
402 u8 hs_state;
403#define VIO_HS_INVALID 0x00
404#define VIO_HS_GOTVERS 0x01
405#define VIO_HS_GOT_ATTR 0x04
406#define VIO_HS_SENT_DREG 0x08
407#define VIO_HS_SENT_RDX 0x10
408#define VIO_HS_GOT_RDX_ACK 0x20
409#define VIO_HS_GOT_RDX 0x40
410#define VIO_HS_SENT_RDX_ACK 0x80
411#define VIO_HS_COMPLETE (VIO_HS_GOT_RDX_ACK | VIO_HS_SENT_RDX_ACK)
412
413 u8 dev_class;
414
415 u8 dr_state;
416#define VIO_DR_STATE_TXREG 0x01
417#define VIO_DR_STATE_RXREG 0x02
418#define VIO_DR_STATE_TXREQ 0x10
419#define VIO_DR_STATE_RXREQ 0x20
420
421 u8 debug;
422#define VIO_DEBUG_HS 0x01
423#define VIO_DEBUG_DATA 0x02
424
425 void *desc_buf;
426 unsigned int desc_buf_len;
427
428 struct vio_completion *cmp;
429
430 struct vio_dev *vdev;
431
432 struct timer_list timer;
433
434 struct vio_version ver;
435
436 struct vio_version *ver_table;
437 int ver_table_entries;
438
439 char *name;
440
441 struct vio_driver_ops *ops;
442};
443
444static inline bool vio_version_before(struct vio_driver_state *vio,
445 u16 major, u16 minor)
446{
447 u32 have = (u32)vio->ver.major << 16 | vio->ver.minor;
448 u32 want = (u32)major << 16 | minor;
449
450 return have < want;
451}
452
453static inline bool vio_version_after(struct vio_driver_state *vio,
454 u16 major, u16 minor)
455{
456 u32 have = (u32)vio->ver.major << 16 | vio->ver.minor;
457 u32 want = (u32)major << 16 | minor;
458
459 return have > want;
460}
461
462static inline bool vio_version_after_eq(struct vio_driver_state *vio,
463 u16 major, u16 minor)
464{
465 u32 have = (u32)vio->ver.major << 16 | vio->ver.minor;
466 u32 want = (u32)major << 16 | minor;
467
468 return have >= want;
469}
470
471#define viodbg(TYPE, f, a...) \
472do { if (vio->debug & VIO_DEBUG_##TYPE) \
473 printk(KERN_INFO "vio: ID[%lu] " f, \
474 vio->vdev->channel_id, ## a); \
475} while (0)
476
477int __vio_register_driver(struct vio_driver *drv, struct module *owner,
478 const char *mod_name);
479/*
480 * vio_register_driver must be a macro so that KBUILD_MODNAME can be expanded
481 */
482#define vio_register_driver(driver) \
483 __vio_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
484void vio_unregister_driver(struct vio_driver *drv);
485
486static inline struct vio_driver *to_vio_driver(struct device_driver *drv)
487{
488 return container_of(drv, struct vio_driver, driver);
489}
490
491#define to_vio_dev(__dev) container_of_const(__dev, struct vio_dev, dev)
492
493int vio_ldc_send(struct vio_driver_state *vio, void *data, int len);
494void vio_link_state_change(struct vio_driver_state *vio, int event);
495void vio_conn_reset(struct vio_driver_state *vio);
496int vio_control_pkt_engine(struct vio_driver_state *vio, void *pkt);
497int vio_validate_sid(struct vio_driver_state *vio,
498 struct vio_msg_tag *tp);
499u32 vio_send_sid(struct vio_driver_state *vio);
500int vio_ldc_alloc(struct vio_driver_state *vio,
501 struct ldc_channel_config *base_cfg, void *event_arg);
502void vio_ldc_free(struct vio_driver_state *vio);
503int vio_driver_init(struct vio_driver_state *vio, struct vio_dev *vdev,
504 u8 dev_class, struct vio_version *ver_table,
505 int ver_table_size, struct vio_driver_ops *ops,
506 char *name);
507
508void vio_port_up(struct vio_driver_state *vio);
509int vio_set_intr(unsigned long dev_ino, int state);
510u64 vio_vdev_node(struct mdesc_handle *hp, struct vio_dev *vdev);
511
512#endif /* _SPARC64_VIO_H */