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-rw-r--r--include/asm-sparc/vio.h406
1 files changed, 406 insertions, 0 deletions
diff --git a/include/asm-sparc/vio.h b/include/asm-sparc/vio.h
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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 BUILD_BUG_ON(!is_power_of_2(ring_size));
262
263 return (dr->pending -
264 ((dr->prod - dr->cons) & (ring_size - 1)));
265}
266
267#define VIO_MAX_TYPE_LEN 32
268#define VIO_MAX_COMPAT_LEN 64
269
270struct vio_dev {
271 u64 mp;
272 struct device_node *dp;
273
274 char type[VIO_MAX_TYPE_LEN];
275 char compat[VIO_MAX_COMPAT_LEN];
276 int compat_len;
277
278 u64 dev_no;
279
280 unsigned long channel_id;
281
282 unsigned int tx_irq;
283 unsigned int rx_irq;
284
285 struct device dev;
286};
287
288struct vio_driver {
289 struct list_head node;
290 const struct vio_device_id *id_table;
291 int (*probe)(struct vio_dev *dev, const struct vio_device_id *id);
292 int (*remove)(struct vio_dev *dev);
293 void (*shutdown)(struct vio_dev *dev);
294 unsigned long driver_data;
295 struct device_driver driver;
296};
297
298struct vio_version {
299 u16 major;
300 u16 minor;
301};
302
303struct vio_driver_state;
304struct vio_driver_ops {
305 int (*send_attr)(struct vio_driver_state *vio);
306 int (*handle_attr)(struct vio_driver_state *vio, void *pkt);
307 void (*handshake_complete)(struct vio_driver_state *vio);
308};
309
310struct vio_completion {
311 struct completion com;
312 int err;
313 int waiting_for;
314};
315
316struct vio_driver_state {
317 /* Protects VIO handshake and, optionally, driver private state. */
318 spinlock_t lock;
319
320 struct ldc_channel *lp;
321
322 u32 _peer_sid;
323 u32 _local_sid;
324 struct vio_dring_state drings[2];
325#define VIO_DRIVER_TX_RING 0
326#define VIO_DRIVER_RX_RING 1
327
328 u8 hs_state;
329#define VIO_HS_INVALID 0x00
330#define VIO_HS_GOTVERS 0x01
331#define VIO_HS_GOT_ATTR 0x04
332#define VIO_HS_SENT_DREG 0x08
333#define VIO_HS_SENT_RDX 0x10
334#define VIO_HS_GOT_RDX_ACK 0x20
335#define VIO_HS_GOT_RDX 0x40
336#define VIO_HS_SENT_RDX_ACK 0x80
337#define VIO_HS_COMPLETE (VIO_HS_GOT_RDX_ACK | VIO_HS_SENT_RDX_ACK)
338
339 u8 dev_class;
340
341 u8 dr_state;
342#define VIO_DR_STATE_TXREG 0x01
343#define VIO_DR_STATE_RXREG 0x02
344#define VIO_DR_STATE_TXREQ 0x10
345#define VIO_DR_STATE_RXREQ 0x20
346
347 u8 debug;
348#define VIO_DEBUG_HS 0x01
349#define VIO_DEBUG_DATA 0x02
350
351 void *desc_buf;
352 unsigned int desc_buf_len;
353
354 struct vio_completion *cmp;
355
356 struct vio_dev *vdev;
357
358 struct timer_list timer;
359
360 struct vio_version ver;
361
362 struct vio_version *ver_table;
363 int ver_table_entries;
364
365 char *name;
366
367 struct vio_driver_ops *ops;
368};
369
370#define viodbg(TYPE, f, a...) \
371do { if (vio->debug & VIO_DEBUG_##TYPE) \
372 printk(KERN_INFO "vio: ID[%lu] " f, \
373 vio->vdev->channel_id, ## a); \
374} while (0)
375
376extern int vio_register_driver(struct vio_driver *drv);
377extern void vio_unregister_driver(struct vio_driver *drv);
378
379static inline struct vio_driver *to_vio_driver(struct device_driver *drv)
380{
381 return container_of(drv, struct vio_driver, driver);
382}
383
384static inline struct vio_dev *to_vio_dev(struct device *dev)
385{
386 return container_of(dev, struct vio_dev, dev);
387}
388
389extern int vio_ldc_send(struct vio_driver_state *vio, void *data, int len);
390extern void vio_link_state_change(struct vio_driver_state *vio, int event);
391extern void vio_conn_reset(struct vio_driver_state *vio);
392extern int vio_control_pkt_engine(struct vio_driver_state *vio, void *pkt);
393extern int vio_validate_sid(struct vio_driver_state *vio,
394 struct vio_msg_tag *tp);
395extern u32 vio_send_sid(struct vio_driver_state *vio);
396extern int vio_ldc_alloc(struct vio_driver_state *vio,
397 struct ldc_channel_config *base_cfg, void *event_arg);
398extern void vio_ldc_free(struct vio_driver_state *vio);
399extern int vio_driver_init(struct vio_driver_state *vio, struct vio_dev *vdev,
400 u8 dev_class, struct vio_version *ver_table,
401 int ver_table_size, struct vio_driver_ops *ops,
402 char *name);
403
404extern void vio_port_up(struct vio_driver_state *vio);
405
406#endif /* _SPARC64_VIO_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-11 07:52:41 -0500