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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 | ||
15 | struct 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 | ||
40 | struct vio_rdx { | |
41 | struct vio_msg_tag tag; | |
42 | u64 resv[6]; | |
43 | }; | |
44 | ||
45 | struct 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 | ||
59 | struct 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 | ||
72 | struct 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 | ||
83 | struct 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 | ||
99 | struct 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 */ | |
114 | struct 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 | ||
128 | struct 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 | ||
159 | struct 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 | ||
173 | struct 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 | ||
187 | struct vio_disk_devid { | |
188 | u16 resv; | |
189 | u16 type; | |
190 | u32 len; | |
191 | char id[0]; | |
192 | }; | |
193 | ||
194 | struct vio_disk_efi { | |
195 | u64 lba; | |
196 | u64 len; | |
197 | char data[0]; | |
198 | }; | |
199 | ||
200 | /* VIO net specific structures and defines */ | |
201 | struct 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 | ||
215 | struct 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 | ||
223 | struct 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 | ||
232 | struct 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 | ||
246 | static inline void *vio_dring_cur(struct vio_dring_state *dr) | |
247 | { | |
248 | return dr->base + (dr->entry_size * dr->prod); | |
249 | } | |
250 | ||
251 | static 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 | ||
257 | static 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 | ||
6160f635 | 267 | #define VIO_MAX_TYPE_LEN 32 |
83292e0a DM |
268 | #define VIO_MAX_COMPAT_LEN 64 |
269 | ||
e53e97ce | 270 | struct vio_dev { |
43fdf274 | 271 | u64 mp; |
e53e97ce DM |
272 | struct device_node *dp; |
273 | ||
83292e0a DM |
274 | char type[VIO_MAX_TYPE_LEN]; |
275 | char compat[VIO_MAX_COMPAT_LEN]; | |
e53e97ce DM |
276 | int compat_len; |
277 | ||
91ba3c21 DM |
278 | u64 dev_no; |
279 | ||
43fdf274 DM |
280 | unsigned long channel_id; |
281 | ||
282 | unsigned int tx_irq; | |
283 | unsigned int rx_irq; | |
284 | ||
e53e97ce DM |
285 | struct device dev; |
286 | }; | |
287 | ||
288 | struct 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 | ||
298 | struct vio_version { | |
299 | u16 major; | |
300 | u16 minor; | |
301 | }; | |
302 | ||
303 | struct vio_driver_state; | |
304 | struct 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 | ||
310 | struct vio_completion { | |
311 | struct completion com; | |
312 | int err; | |
313 | int waiting_for; | |
314 | }; | |
315 | ||
316 | struct 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 | ||
e53e97ce DM |
358 | struct timer_list timer; |
359 | ||
360 | struct vio_version ver; | |
361 | ||
e53e97ce DM |
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...) \ | |
371 | do { if (vio->debug & VIO_DEBUG_##TYPE) \ | |
43fdf274 DM |
372 | printk(KERN_INFO "vio: ID[%lu] " f, \ |
373 | vio->vdev->channel_id, ## a); \ | |
e53e97ce DM |
374 | } while (0) |
375 | ||
376 | extern int vio_register_driver(struct vio_driver *drv); | |
377 | extern void vio_unregister_driver(struct vio_driver *drv); | |
378 | ||
379 | static inline struct vio_driver *to_vio_driver(struct device_driver *drv) | |
380 | { | |
381 | return container_of(drv, struct vio_driver, driver); | |
382 | } | |
383 | ||
384 | static inline struct vio_dev *to_vio_dev(struct device *dev) | |
385 | { | |
386 | return container_of(dev, struct vio_dev, dev); | |
387 | } | |
388 | ||
389 | extern int vio_ldc_send(struct vio_driver_state *vio, void *data, int len); | |
390 | extern void vio_link_state_change(struct vio_driver_state *vio, int event); | |
391 | extern void vio_conn_reset(struct vio_driver_state *vio); | |
392 | extern int vio_control_pkt_engine(struct vio_driver_state *vio, void *pkt); | |
393 | extern int vio_validate_sid(struct vio_driver_state *vio, | |
394 | struct vio_msg_tag *tp); | |
395 | extern u32 vio_send_sid(struct vio_driver_state *vio); | |
396 | extern int vio_ldc_alloc(struct vio_driver_state *vio, | |
397 | struct ldc_channel_config *base_cfg, void *event_arg); | |
398 | extern void vio_ldc_free(struct vio_driver_state *vio); | |
399 | extern int vio_driver_init(struct vio_driver_state *vio, struct vio_dev *vdev, | |
43fdf274 DM |
400 | u8 dev_class, struct vio_version *ver_table, |
401 | int ver_table_size, struct vio_driver_ops *ops, | |
402 | char *name); | |
e53e97ce | 403 | |
e53e97ce DM |
404 | extern void vio_port_up(struct vio_driver_state *vio); |
405 | ||
406 | #endif /* _SPARC64_VIO_H */ |