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34#ifndef __C2_H
35#define __C2_H
36
37#include <linux/netdevice.h>
38#include <linux/spinlock.h>
39#include <linux/kernel.h>
40#include <linux/pci.h>
41#include <linux/dma-mapping.h>
42#include <linux/idr.h>
43
44#include "c2_provider.h"
45#include "c2_mq.h"
46#include "c2_status.h"
47
48#define DRV_NAME "c2"
49#define DRV_VERSION "1.1"
50#define PFX DRV_NAME ": "
51
52#define BAR_0 0
53#define BAR_2 2
54#define BAR_4 4
55
56#define RX_BUF_SIZE (1536 + 8)
57#define ETH_JUMBO_MTU 9000
58#define C2_MAGIC "CEPHEUS"
59#define C2_VERSION 4
60#define C2_IVN (18 & 0x7fffffff)
61
62#define C2_REG0_SIZE (16 * 1024)
63#define C2_REG2_SIZE (2 * 1024 * 1024)
64#define C2_REG4_SIZE (256 * 1024 * 1024)
65#define C2_NUM_TX_DESC 341
66#define C2_NUM_RX_DESC 256
67#define C2_PCI_REGS_OFFSET (0x10000)
68#define C2_RXP_HRXDQ_OFFSET (((C2_REG4_SIZE)/2))
69#define C2_RXP_HRXDQ_SIZE (4096)
70#define C2_TXP_HTXDQ_OFFSET (((C2_REG4_SIZE)/2) + C2_RXP_HRXDQ_SIZE)
71#define C2_TXP_HTXDQ_SIZE (4096)
72#define C2_TX_TIMEOUT (6*HZ)
73
74
75static const u8 c2_magic[] = {
76 0x43, 0x45, 0x50, 0x48, 0x45, 0x55, 0x53
77};
78
79enum adapter_pci_regs {
80 C2_REGS_MAGIC = 0x0000,
81 C2_REGS_VERS = 0x0008,
82 C2_REGS_IVN = 0x000C,
83 C2_REGS_PCI_WINSIZE = 0x0010,
84 C2_REGS_Q0_QSIZE = 0x0014,
85 C2_REGS_Q0_MSGSIZE = 0x0018,
86 C2_REGS_Q0_POOLSTART = 0x001C,
87 C2_REGS_Q0_SHARED = 0x0020,
88 C2_REGS_Q1_QSIZE = 0x0024,
89 C2_REGS_Q1_MSGSIZE = 0x0028,
90 C2_REGS_Q1_SHARED = 0x0030,
91 C2_REGS_Q2_QSIZE = 0x0034,
92 C2_REGS_Q2_MSGSIZE = 0x0038,
93 C2_REGS_Q2_SHARED = 0x0040,
94 C2_REGS_ENADDR = 0x004C,
95 C2_REGS_RDMA_ENADDR = 0x0054,
96 C2_REGS_HRX_CUR = 0x006C,
97};
98
99struct c2_adapter_pci_regs {
100 char reg_magic[8];
101 u32 version;
102 u32 ivn;
103 u32 pci_window_size;
104 u32 q0_q_size;
105 u32 q0_msg_size;
106 u32 q0_pool_start;
107 u32 q0_shared;
108 u32 q1_q_size;
109 u32 q1_msg_size;
110 u32 q1_pool_start;
111 u32 q1_shared;
112 u32 q2_q_size;
113 u32 q2_msg_size;
114 u32 q2_pool_start;
115 u32 q2_shared;
116 u32 log_start;
117 u32 log_size;
118 u8 host_enaddr[8];
119 u8 rdma_enaddr[8];
120 u32 crash_entry;
121 u32 crash_ready[2];
122 u32 fw_txd_cur;
123 u32 fw_hrxd_cur;
124 u32 fw_rxd_cur;
125};
126
127enum pci_regs {
128 C2_HISR = 0x0000,
129 C2_DISR = 0x0004,
130 C2_HIMR = 0x0008,
131 C2_DIMR = 0x000C,
132 C2_NISR0 = 0x0010,
133 C2_NISR1 = 0x0014,
134 C2_NIMR0 = 0x0018,
135 C2_NIMR1 = 0x001C,
136 C2_IDIS = 0x0020,
137};
138
139enum {
140 C2_PCI_HRX_INT = 1 << 8,
141 C2_PCI_HTX_INT = 1 << 17,
142 C2_PCI_HRX_QUI = 1 << 31,
143};
144
145
146
147
148struct c2_pci_regs {
149 u32 hostisr;
150 u32 dmaisr;
151 u32 hostimr;
152 u32 dmaimr;
153 u32 netisr0;
154 u32 netisr1;
155 u32 netimr0;
156 u32 netimr1;
157 u32 int_disable;
158};
159
160
161enum c2_txp_flags {
162 TXP_HTXD_DONE = 0,
163 TXP_HTXD_READY = 1 << 0,
164 TXP_HTXD_UNINIT = 1 << 1,
165};
166
167
168enum c2_rxp_flags {
169 RXP_HRXD_UNINIT = 0,
170 RXP_HRXD_READY = 1 << 0,
171 RXP_HRXD_DONE = 1 << 1,
172};
173
174
175enum c2_rxp_status {
176 RXP_HRXD_ZERO = 0,
177 RXP_HRXD_OK = 1 << 0,
178 RXP_HRXD_BUF_OV = 1 << 1,
179};
180
181
182enum txp_desc {
183 C2_TXP_FLAGS = 0x0000,
184 C2_TXP_LEN = 0x0002,
185 C2_TXP_ADDR = 0x0004,
186};
187
188
189enum rxp_desc {
190 C2_RXP_FLAGS = 0x0000,
191 C2_RXP_STATUS = 0x0002,
192 C2_RXP_COUNT = 0x0004,
193 C2_RXP_LEN = 0x0006,
194 C2_RXP_ADDR = 0x0008,
195};
196
197struct c2_txp_desc {
198 u16 flags;
199 u16 len;
200 u64 addr;
201} __attribute__ ((packed));
202
203struct c2_rxp_desc {
204 u16 flags;
205 u16 status;
206 u16 count;
207 u16 len;
208 u64 addr;
209} __attribute__ ((packed));
210
211struct c2_rxp_hdr {
212 u16 flags;
213 u16 status;
214 u16 len;
215 u16 rsvd;
216} __attribute__ ((packed));
217
218struct c2_tx_desc {
219 u32 len;
220 u32 status;
221 dma_addr_t next_offset;
222};
223
224struct c2_rx_desc {
225 u32 len;
226 u32 status;
227 dma_addr_t next_offset;
228};
229
230struct c2_alloc {
231 u32 last;
232 u32 max;
233 spinlock_t lock;
234 unsigned long *table;
235};
236
237struct c2_array {
238 struct {
239 void **page;
240 int used;
241 } *page_list;
242};
243
244
245
246
247
248
249
250struct sp_chunk {
251 struct sp_chunk *next;
252 dma_addr_t dma_addr;
253 DEFINE_DMA_UNMAP_ADDR(mapping);
254 u16 head;
255 u16 shared_ptr[0];
256};
257
258struct c2_pd_table {
259 u32 last;
260 u32 max;
261 spinlock_t lock;
262 unsigned long *table;
263};
264
265struct c2_qp_table {
266 struct idr idr;
267 spinlock_t lock;
268 int last;
269};
270
271struct c2_element {
272 struct c2_element *next;
273 void *ht_desc;
274 void __iomem *hw_desc;
275 struct sk_buff *skb;
276 dma_addr_t mapaddr;
277 u32 maplen;
278};
279
280struct c2_ring {
281 struct c2_element *to_clean;
282 struct c2_element *to_use;
283 struct c2_element *start;
284 unsigned long count;
285};
286
287struct c2_dev {
288 struct ib_device ibdev;
289 void __iomem *regs;
290 void __iomem *mmio_txp_ring;
291 void __iomem *mmio_rxp_ring;
292 spinlock_t lock;
293 struct pci_dev *pcidev;
294 struct net_device *netdev;
295 struct net_device *pseudo_netdev;
296 unsigned int cur_tx;
297 unsigned int cur_rx;
298 u32 adapter_handle;
299 int device_cap_flags;
300 void __iomem *kva;
301 unsigned long pa;
302 void **qptr_array;
303
304 struct kmem_cache *host_msg_cache;
305
306 struct list_head cca_link;
307 struct list_head eh_wakeup_list;
308 wait_queue_head_t req_vq_wo;
309
310
311 struct ib_device_attr props;
312
313 struct c2_pd_table pd_table;
314 struct c2_qp_table qp_table;
315 int ports;
316 int devnum;
317 spinlock_t vqlock;
318
319
320 struct c2_mq req_vq;
321 struct c2_mq rep_vq;
322 struct c2_mq aeq;
323
324
325 struct sp_chunk *kern_mqsp_pool;
326
327
328
329 u16 req_vq_shared;
330 u16 rep_vq_shared;
331 u16 aeq_shared;
332 u16 irq_claimed;
333
334
335
336
337 int hthead;
338 void *htpages;
339 int htlen;
340 void *htuva;
341 spinlock_t htlock;
342
343 u64 adapter_hint_uva;
344
345
346
347
348 __be16 *hint_count;
349 dma_addr_t hint_count_dma;
350 u16 hints_read;
351
352 int init;
353 char ae_cache_name[16];
354 char vq_cache_name[16];
355};
356
357struct c2_port {
358 u32 msg_enable;
359 struct c2_dev *c2dev;
360 struct net_device *netdev;
361
362 spinlock_t tx_lock;
363 u32 tx_avail;
364 struct c2_ring tx_ring;
365 struct c2_ring rx_ring;
366
367 void *mem;
368 dma_addr_t dma;
369 unsigned long mem_size;
370
371 u32 rx_buf_size;
372};
373
374
375
376
377#define PCI_BAR0_HOST_HINT 0x100
378#define PCI_BAR0_ADAPTER_HINT 0x2000
379
380
381
382
383#define CQ_ARMED 0x01
384#define CQ_WAIT_FOR_DMA 0x80
385
386
387
388
389
390
391
392
393
394#define C2_HINT_MAKE(q_index, hint_count) (((q_index) << 16) | hint_count)
395#define C2_HINT_GET_INDEX(hint) (((hint) & 0x7FFF0000) >> 16)
396#define C2_HINT_GET_COUNT(hint) ((hint) & 0x0000FFFF)
397
398
399
400
401
402
403#define C2_ADAPTER_PCI_REGS_OFFSET 0x10000
404
405#ifndef readq
406static inline u64 readq(const void __iomem * addr)
407{
408 u64 ret = readl(addr + 4);
409 ret <<= 32;
410 ret |= readl(addr);
411
412 return ret;
413}
414#endif
415
416#ifndef writeq
417static inline void __raw_writeq(u64 val, void __iomem * addr)
418{
419 __raw_writel((u32) (val), addr);
420 __raw_writel((u32) (val >> 32), (addr + 4));
421}
422#endif
423
424#define C2_SET_CUR_RX(c2dev, cur_rx) \
425 __raw_writel((__force u32) cpu_to_be32(cur_rx), c2dev->mmio_txp_ring + 4092)
426
427#define C2_GET_CUR_RX(c2dev) \
428 be32_to_cpu((__force __be32) readl(c2dev->mmio_txp_ring + 4092))
429
430static inline struct c2_dev *to_c2dev(struct ib_device *ibdev)
431{
432 return container_of(ibdev, struct c2_dev, ibdev);
433}
434
435static inline int c2_errno(void *reply)
436{
437 switch (c2_wr_get_result(reply)) {
438 case C2_OK:
439 return 0;
440 case CCERR_NO_BUFS:
441 case CCERR_INSUFFICIENT_RESOURCES:
442 case CCERR_ZERO_RDMA_READ_RESOURCES:
443 return -ENOMEM;
444 case CCERR_MR_IN_USE:
445 case CCERR_QP_IN_USE:
446 return -EBUSY;
447 case CCERR_ADDR_IN_USE:
448 return -EADDRINUSE;
449 case CCERR_ADDR_NOT_AVAIL:
450 return -EADDRNOTAVAIL;
451 case CCERR_CONN_RESET:
452 return -ECONNRESET;
453 case CCERR_NOT_IMPLEMENTED:
454 case CCERR_INVALID_WQE:
455 return -ENOSYS;
456 case CCERR_QP_NOT_PRIVILEGED:
457 return -EPERM;
458 case CCERR_STACK_ERROR:
459 return -EPROTO;
460 case CCERR_ACCESS_VIOLATION:
461 case CCERR_BASE_AND_BOUNDS_VIOLATION:
462 return -EFAULT;
463 case CCERR_STAG_STATE_NOT_INVALID:
464 case CCERR_INVALID_ADDRESS:
465 case CCERR_INVALID_CQ:
466 case CCERR_INVALID_EP:
467 case CCERR_INVALID_MODIFIER:
468 case CCERR_INVALID_MTU:
469 case CCERR_INVALID_PD_ID:
470 case CCERR_INVALID_QP:
471 case CCERR_INVALID_RNIC:
472 case CCERR_INVALID_STAG:
473 return -EINVAL;
474 default:
475 return -EAGAIN;
476 }
477}
478
479
480extern int c2_register_device(struct c2_dev *c2dev);
481extern void c2_unregister_device(struct c2_dev *c2dev);
482extern int c2_rnic_init(struct c2_dev *c2dev);
483extern void c2_rnic_term(struct c2_dev *c2dev);
484extern void c2_rnic_interrupt(struct c2_dev *c2dev);
485extern int c2_del_addr(struct c2_dev *c2dev, __be32 inaddr, __be32 inmask);
486extern int c2_add_addr(struct c2_dev *c2dev, __be32 inaddr, __be32 inmask);
487
488
489extern int c2_alloc_qp(struct c2_dev *c2dev, struct c2_pd *pd,
490 struct ib_qp_init_attr *qp_attrs, struct c2_qp *qp);
491extern void c2_free_qp(struct c2_dev *c2dev, struct c2_qp *qp);
492extern struct ib_qp *c2_get_qp(struct ib_device *device, int qpn);
493extern int c2_qp_modify(struct c2_dev *c2dev, struct c2_qp *qp,
494 struct ib_qp_attr *attr, int attr_mask);
495extern int c2_qp_set_read_limits(struct c2_dev *c2dev, struct c2_qp *qp,
496 int ord, int ird);
497extern int c2_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
498 struct ib_send_wr **bad_wr);
499extern int c2_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
500 struct ib_recv_wr **bad_wr);
501extern void __devinit c2_init_qp_table(struct c2_dev *c2dev);
502extern void __devexit c2_cleanup_qp_table(struct c2_dev *c2dev);
503extern void c2_set_qp_state(struct c2_qp *, int);
504extern struct c2_qp *c2_find_qpn(struct c2_dev *c2dev, int qpn);
505
506
507extern int c2_pd_alloc(struct c2_dev *c2dev, int privileged, struct c2_pd *pd);
508extern void c2_pd_free(struct c2_dev *c2dev, struct c2_pd *pd);
509extern int __devinit c2_init_pd_table(struct c2_dev *c2dev);
510extern void __devexit c2_cleanup_pd_table(struct c2_dev *c2dev);
511
512
513extern int c2_init_cq(struct c2_dev *c2dev, int entries,
514 struct c2_ucontext *ctx, struct c2_cq *cq);
515extern void c2_free_cq(struct c2_dev *c2dev, struct c2_cq *cq);
516extern void c2_cq_event(struct c2_dev *c2dev, u32 mq_index);
517extern void c2_cq_clean(struct c2_dev *c2dev, struct c2_qp *qp, u32 mq_index);
518extern int c2_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry);
519extern int c2_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);
520
521
522extern int c2_llp_connect(struct iw_cm_id *cm_id,
523 struct iw_cm_conn_param *iw_param);
524extern int c2_llp_accept(struct iw_cm_id *cm_id,
525 struct iw_cm_conn_param *iw_param);
526extern int c2_llp_reject(struct iw_cm_id *cm_id, const void *pdata,
527 u8 pdata_len);
528extern int c2_llp_service_create(struct iw_cm_id *cm_id, int backlog);
529extern int c2_llp_service_destroy(struct iw_cm_id *cm_id);
530
531
532extern int c2_nsmr_register_phys_kern(struct c2_dev *c2dev, u64 *addr_list,
533 int page_size, int pbl_depth, u32 length,
534 u32 off, u64 *va, enum c2_acf acf,
535 struct c2_mr *mr);
536extern int c2_stag_dealloc(struct c2_dev *c2dev, u32 stag_index);
537
538
539extern void c2_ae_event(struct c2_dev *c2dev, u32 mq_index);
540
541
542extern int c2_init_mqsp_pool(struct c2_dev *c2dev, gfp_t gfp_mask,
543 struct sp_chunk **root);
544extern void c2_free_mqsp_pool(struct c2_dev *c2dev, struct sp_chunk *root);
545extern __be16 *c2_alloc_mqsp(struct c2_dev *c2dev, struct sp_chunk *head,
546 dma_addr_t *dma_addr, gfp_t gfp_mask);
547extern void c2_free_mqsp(__be16* mqsp);
548#endif
549