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-rw-r--r--include/asm-sparc64/vio.h404
1 files changed, 404 insertions, 0 deletions
diff --git a/include/asm-sparc64/vio.h b/include/asm-sparc64/vio.h
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index 000000000000..83c96422e9d6
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+++ b/include/asm-sparc64/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
12#include <asm/ldc.h>
13#include <asm/mdesc.h>
14
15struct vio_msg_tag {
16 u8 type;
17#define VIO_TYPE_CTRL 0x01
18#define VIO_TYPE_DATA 0x02
19#define VIO_TYPE_ERR 0x04
20
21 u8 stype;
22#define VIO_SUBTYPE_INFO 0x01
23#define VIO_SUBTYPE_ACK 0x02
24#define VIO_SUBTYPE_NACK 0x04
25
26 u16 stype_env;
27#define VIO_VER_INFO 0x0001
28#define VIO_ATTR_INFO 0x0002
29#define VIO_DRING_REG 0x0003
30#define VIO_DRING_UNREG 0x0004
31#define VIO_RDX 0x0005
32#define VIO_PKT_DATA 0x0040
33#define VIO_DESC_DATA 0x0041
34#define VIO_DRING_DATA 0x0042
35#define VNET_MCAST_INFO 0x0101
36
37 u32 sid;
38};
39
40struct vio_rdx {
41 struct vio_msg_tag tag;
42 u64 resv[6];
43};
44
45struct vio_ver_info {
46 struct vio_msg_tag tag;
47 u16 major;
48 u16 minor;
49 u8 dev_class;
50#define VDEV_NETWORK 0x01
51#define VDEV_NETWORK_SWITCH 0x02
52#define VDEV_DISK 0x03
53#define VDEV_DISK_SERVER 0x04
54
55 u8 resv1[3];
56 u64 resv2[5];
57};
58
59struct vio_dring_register {
60 struct vio_msg_tag tag;
61 u64 dring_ident;
62 u32 num_descr;
63 u32 descr_size;
64 u16 options;
65#define VIO_TX_DRING 0x0001
66#define VIO_RX_DRING 0x0002
67 u16 resv;
68 u32 num_cookies;
69 struct ldc_trans_cookie cookies[0];
70};
71
72struct vio_dring_unregister {
73 struct vio_msg_tag tag;
74 u64 dring_ident;
75 u64 resv[5];
76};
77
78/* Data transfer modes */
79#define VIO_PKT_MODE 0x01 /* Packet based transfer */
80#define VIO_DESC_MODE 0x02 /* In-band descriptors */
81#define VIO_DRING_MODE 0x03 /* Descriptor rings */
82
83struct vio_dring_data {
84 struct vio_msg_tag tag;
85 u64 seq;
86 u64 dring_ident;
87 u32 start_idx;
88 u32 end_idx;
89 u8 state;
90#define VIO_DRING_ACTIVE 0x01
91#define VIO_DRING_STOPPED 0x02
92
93 u8 __pad1;
94 u16 __pad2;
95 u32 __pad3;
96 u64 __par4[2];
97};
98
99struct vio_dring_hdr {
100 u8 state;
101#define VIO_DESC_FREE 0x01
102#define VIO_DESC_READY 0x02
103#define VIO_DESC_ACCEPTED 0x03
104#define VIO_DESC_DONE 0x04
105 u8 ack;
106#define VIO_ACK_ENABLE 0x01
107#define VIO_ACK_DISABLE 0x00
108
109 u16 __pad1;
110 u32 __pad2;
111};
112
113/* VIO disk specific structures and defines */
114struct vio_disk_attr_info {
115 struct vio_msg_tag tag;
116 u8 xfer_mode;
117 u8 vdisk_type;
118#define VD_DISK_TYPE_SLICE 0x01 /* Slice in block device */
119#define VD_DISK_TYPE_DISK 0x02 /* Entire block device */
120 u16 resv1;
121 u32 vdisk_block_size;
122 u64 operations;
123 u64 vdisk_size;
124 u64 max_xfer_size;
125 u64 resv2[2];
126};
127
128struct vio_disk_desc {
129 struct vio_dring_hdr hdr;
130 u64 req_id;
131 u8 operation;
132#define VD_OP_BREAD 0x01 /* Block read */
133#define VD_OP_BWRITE 0x02 /* Block write */
134#define VD_OP_FLUSH 0x03 /* Flush disk contents */
135#define VD_OP_GET_WCE 0x04 /* Get write-cache status */
136#define VD_OP_SET_WCE 0x05 /* Enable/disable write-cache */
137#define VD_OP_GET_VTOC 0x06 /* Get VTOC */
138#define VD_OP_SET_VTOC 0x07 /* Set VTOC */
139#define VD_OP_GET_DISKGEOM 0x08 /* Get disk geometry */
140#define VD_OP_SET_DISKGEOM 0x09 /* Set disk geometry */
141#define VD_OP_SCSICMD 0x0a /* SCSI control command */
142#define VD_OP_GET_DEVID 0x0b /* Get device ID */
143#define VD_OP_GET_EFI 0x0c /* Get EFI */
144#define VD_OP_SET_EFI 0x0d /* Set EFI */
145 u8 slice;
146 u16 resv1;
147 u32 status;
148 u64 offset;
149 u64 size;
150 u32 ncookies;
151 u32 resv2;
152 struct ldc_trans_cookie cookies[0];
153};
154
155#define VIO_DISK_VNAME_LEN 8
156#define VIO_DISK_ALABEL_LEN 128
157#define VIO_DISK_NUM_PART 8
158
159struct vio_disk_vtoc {
160 u8 volume_name[VIO_DISK_VNAME_LEN];
161 u16 sector_size;
162 u16 num_partitions;
163 u8 ascii_label[VIO_DISK_ALABEL_LEN];
164 struct {
165 u16 id;
166 u16 perm_flags;
167 u32 resv;
168 u64 start_block;
169 u64 num_blocks;
170 } partitions[VIO_DISK_NUM_PART];
171};
172
173struct vio_disk_geom {
174 u16 num_cyl; /* Num data cylinders */
175 u16 alt_cyl; /* Num alternate cylinders */
176 u16 beg_cyl; /* Cyl off of fixed head area */
177 u16 num_hd; /* Num heads */
178 u16 num_sec; /* Num sectors */
179 u16 ifact; /* Interleave factor */
180 u16 apc; /* Alts per cylinder (SCSI) */
181 u16 rpm; /* Revolutions per minute */
182 u16 phy_cyl; /* Num physical cylinders */
183 u16 wr_skip; /* Num sects to skip, writes */
184 u16 rd_skip; /* Num sects to skip, writes */
185};
186
187struct vio_disk_devid {
188 u16 resv;
189 u16 type;
190 u32 len;
191 char id[0];
192};
193
194struct vio_disk_efi {
195 u64 lba;
196 u64 len;
197 char data[0];
198};
199
200/* VIO net specific structures and defines */
201struct vio_net_attr_info {
202 struct vio_msg_tag tag;
203 u8 xfer_mode;
204 u8 addr_type;
205#define VNET_ADDR_ETHERMAC 0x01
206 u16 ack_freq;
207 u32 resv1;
208 u64 addr;
209 u64 mtu;
210 u64 resv2[3];
211};
212
213#define VNET_NUM_MCAST 7
214
215struct vio_net_mcast_info {
216 struct vio_msg_tag tag;
217 u8 set;
218 u8 count;
219 u8 mcast_addr[VNET_NUM_MCAST * 6];
220 u32 resv;
221};
222
223struct vio_net_desc {
224 struct vio_dring_hdr hdr;
225 u32 size;
226 u32 ncookies;
227 struct ldc_trans_cookie cookies[0];
228};
229
230#define VIO_MAX_RING_COOKIES 24
231
232struct vio_dring_state {
233 u64 ident;
234 void *base;
235 u64 snd_nxt;
236 u64 rcv_nxt;
237 u32 entry_size;
238 u32 num_entries;
239 u32 prod;
240 u32 cons;
241 u32 pending;
242 int ncookies;
243 struct ldc_trans_cookie cookies[VIO_MAX_RING_COOKIES];
244};
245
246static inline void *vio_dring_cur(struct vio_dring_state *dr)
247{
248 return dr->base + (dr->entry_size * dr->prod);
249}
250
251static inline void *vio_dring_entry(struct vio_dring_state *dr,
252 unsigned int index)
253{
254 return dr->base + (dr->entry_size * index);
255}
256
257static inline u32 vio_dring_avail(struct vio_dring_state *dr,
258 unsigned int ring_size)
259{
260 /* Ensure build-time power-of-2. */
261 BUILD_BUG_ON(ring_size & (ring_size - 1));
262
263 return (dr->pending -
264 ((dr->prod - dr->cons) & (ring_size - 1)));
265}
266
267#define VIO_MAX_TYPE_LEN 64
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 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 */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-16 05:02:56 -0500