xref: /openbmc/linux/drivers/scsi/csiostor/csio_hw.h (revision 94cdda6b)
1 /*
2  * This file is part of the Chelsio FCoE driver for Linux.
3  *
4  * Copyright (c) 2008-2012 Chelsio Communications, Inc. All rights reserved.
5  *
6  * This software is available to you under a choice of one of two
7  * licenses.  You may choose to be licensed under the terms of the GNU
8  * General Public License (GPL) Version 2, available from the file
9  * COPYING in the main directory of this source tree, or the
10  * OpenIB.org BSD license below:
11  *
12  *     Redistribution and use in source and binary forms, with or
13  *     without modification, are permitted provided that the following
14  *     conditions are met:
15  *
16  *      - Redistributions of source code must retain the above
17  *        copyright notice, this list of conditions and the following
18  *        disclaimer.
19  *
20  *      - Redistributions in binary form must reproduce the above
21  *        copyright notice, this list of conditions and the following
22  *        disclaimer in the documentation and/or other materials
23  *        provided with the distribution.
24  *
25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32  * SOFTWARE.
33  */
34 
35 #ifndef __CSIO_HW_H__
36 #define __CSIO_HW_H__
37 
38 #include <linux/kernel.h>
39 #include <linux/pci.h>
40 #include <linux/device.h>
41 #include <linux/workqueue.h>
42 #include <linux/compiler.h>
43 #include <linux/cdev.h>
44 #include <linux/list.h>
45 #include <linux/mempool.h>
46 #include <linux/io.h>
47 #include <linux/spinlock_types.h>
48 #include <scsi/scsi_device.h>
49 #include <scsi/scsi_transport_fc.h>
50 
51 #include "t4_hw.h"
52 #include "csio_hw_chip.h"
53 #include "csio_wr.h"
54 #include "csio_mb.h"
55 #include "csio_scsi.h"
56 #include "csio_defs.h"
57 #include "t4_regs.h"
58 #include "t4_msg.h"
59 
60 /*
61  * An error value used by host. Should not clash with FW defined return values.
62  */
63 #define	FW_HOSTERROR			255
64 
65 #define CSIO_HW_NAME		"Chelsio FCoE Adapter"
66 #define CSIO_MAX_PFN		8
67 #define CSIO_MAX_PPORTS		4
68 
69 #define CSIO_MAX_LUN		0xFFFF
70 #define CSIO_MAX_QUEUE		2048
71 #define CSIO_MAX_CMD_PER_LUN	32
72 #define CSIO_MAX_DDP_BUF_SIZE	(1024 * 1024)
73 #define CSIO_MAX_SECTOR_SIZE	128
74 
75 /* Interrupts */
76 #define CSIO_EXTRA_MSI_IQS	2	/* Extra iqs for INTX/MSI mode
77 					 * (Forward intr iq + fw iq) */
78 #define CSIO_EXTRA_VECS		2	/* non-data + FW evt */
79 #define CSIO_MAX_SCSI_CPU	128
80 #define CSIO_MAX_SCSI_QSETS	(CSIO_MAX_SCSI_CPU * CSIO_MAX_PPORTS)
81 #define CSIO_MAX_MSIX_VECS	(CSIO_MAX_SCSI_QSETS + CSIO_EXTRA_VECS)
82 
83 /* Queues */
84 enum {
85 	CSIO_INTR_WRSIZE = 128,
86 	CSIO_INTR_IQSIZE = ((CSIO_MAX_MSIX_VECS + 1) * CSIO_INTR_WRSIZE),
87 	CSIO_FWEVT_WRSIZE = 128,
88 	CSIO_FWEVT_IQLEN = 128,
89 	CSIO_FWEVT_FLBUFS = 64,
90 	CSIO_FWEVT_IQSIZE = (CSIO_FWEVT_WRSIZE * CSIO_FWEVT_IQLEN),
91 	CSIO_HW_NIQ = 1,
92 	CSIO_HW_NFLQ = 1,
93 	CSIO_HW_NEQ = 1,
94 	CSIO_HW_NINTXQ = 1,
95 };
96 
97 struct csio_msix_entries {
98 	unsigned short	vector;		/* Assigned MSI-X vector */
99 	void		*dev_id;	/* Priv object associated w/ this msix*/
100 	char		desc[24];	/* Description of this vector */
101 };
102 
103 struct csio_scsi_qset {
104 	int		iq_idx;		/* Ingress index */
105 	int		eq_idx;		/* Egress index */
106 	uint32_t	intr_idx;	/* MSIX Vector index */
107 };
108 
109 struct csio_scsi_cpu_info {
110 	int16_t	max_cpus;
111 };
112 
113 extern int csio_dbg_level;
114 extern unsigned int csio_port_mask;
115 extern int csio_msi;
116 
117 #define CSIO_VENDOR_ID				0x1425
118 #define CSIO_ASIC_DEVID_PROTO_MASK		0xFF00
119 #define CSIO_ASIC_DEVID_TYPE_MASK		0x00FF
120 
121 #define CSIO_GLBL_INTR_MASK	(CIM_F | MPS_F | PL_F | PCIE_F | MC_F | \
122 				 EDC0_F | EDC1_F | LE_F | TP_F | MA_F | \
123 				 PM_TX_F | PM_RX_F | ULP_RX_F | \
124 				 CPL_SWITCH_F | SGE_F | ULP_TX_F | SF_F)
125 
126 /*
127  * Hard parameters used to initialize the card in the absence of a
128  * configuration file.
129  */
130 enum {
131 	/* General */
132 	CSIO_SGE_DBFIFO_INT_THRESH	= 10,
133 
134 	CSIO_SGE_RX_DMA_OFFSET		= 2,
135 
136 	CSIO_SGE_FLBUF_SIZE1		= 65536,
137 	CSIO_SGE_FLBUF_SIZE2		= 1536,
138 	CSIO_SGE_FLBUF_SIZE3		= 9024,
139 	CSIO_SGE_FLBUF_SIZE4		= 9216,
140 	CSIO_SGE_FLBUF_SIZE5		= 2048,
141 	CSIO_SGE_FLBUF_SIZE6		= 128,
142 	CSIO_SGE_FLBUF_SIZE7		= 8192,
143 	CSIO_SGE_FLBUF_SIZE8		= 16384,
144 
145 	CSIO_SGE_TIMER_VAL_0		= 5,
146 	CSIO_SGE_TIMER_VAL_1		= 10,
147 	CSIO_SGE_TIMER_VAL_2		= 20,
148 	CSIO_SGE_TIMER_VAL_3		= 50,
149 	CSIO_SGE_TIMER_VAL_4		= 100,
150 	CSIO_SGE_TIMER_VAL_5		= 200,
151 
152 	CSIO_SGE_INT_CNT_VAL_0		= 1,
153 	CSIO_SGE_INT_CNT_VAL_1		= 4,
154 	CSIO_SGE_INT_CNT_VAL_2		= 8,
155 	CSIO_SGE_INT_CNT_VAL_3		= 16,
156 };
157 
158 /* Slowpath events */
159 enum csio_evt {
160 	CSIO_EVT_FW  = 0,	/* FW event */
161 	CSIO_EVT_MBX,		/* MBX event */
162 	CSIO_EVT_SCN,		/* State change notification */
163 	CSIO_EVT_DEV_LOSS,	/* Device loss event */
164 	CSIO_EVT_MAX,		/* Max supported event */
165 };
166 
167 #define CSIO_EVT_MSG_SIZE	512
168 #define CSIO_EVTQ_SIZE		512
169 
170 /* Event msg  */
171 struct csio_evt_msg {
172 	struct list_head	list;	/* evt queue*/
173 	enum csio_evt		type;
174 	uint8_t			data[CSIO_EVT_MSG_SIZE];
175 };
176 
177 enum {
178 	SERNUM_LEN     = 16,    /* Serial # length */
179 	EC_LEN         = 16,    /* E/C length */
180 	ID_LEN         = 16,    /* ID length */
181 };
182 
183 enum {
184 	SF_SIZE = SF_SEC_SIZE * 16,   /* serial flash size */
185 };
186 
187 /* serial flash and firmware constants */
188 enum {
189 	SF_ATTEMPTS = 10,             /* max retries for SF operations */
190 
191 	/* flash command opcodes */
192 	SF_PROG_PAGE    = 2,          /* program page */
193 	SF_WR_DISABLE   = 4,          /* disable writes */
194 	SF_RD_STATUS    = 5,          /* read status register */
195 	SF_WR_ENABLE    = 6,          /* enable writes */
196 	SF_RD_DATA_FAST = 0xb,        /* read flash */
197 	SF_RD_ID	= 0x9f,	      /* read ID */
198 	SF_ERASE_SECTOR = 0xd8,       /* erase sector */
199 };
200 
201 /* Management module */
202 enum {
203 	CSIO_MGMT_EQ_WRSIZE = 512,
204 	CSIO_MGMT_IQ_WRSIZE = 128,
205 	CSIO_MGMT_EQLEN = 64,
206 	CSIO_MGMT_IQLEN = 64,
207 };
208 
209 #define CSIO_MGMT_EQSIZE	(CSIO_MGMT_EQLEN * CSIO_MGMT_EQ_WRSIZE)
210 #define CSIO_MGMT_IQSIZE	(CSIO_MGMT_IQLEN * CSIO_MGMT_IQ_WRSIZE)
211 
212 /* mgmt module stats */
213 struct csio_mgmtm_stats {
214 	uint32_t	n_abort_req;		/* Total abort request */
215 	uint32_t	n_abort_rsp;		/* Total abort response */
216 	uint32_t	n_close_req;		/* Total close request */
217 	uint32_t	n_close_rsp;		/* Total close response */
218 	uint32_t	n_err;			/* Total Errors */
219 	uint32_t	n_drop;			/* Total request dropped */
220 	uint32_t	n_active;		/* Count of active_q */
221 	uint32_t	n_cbfn;			/* Count of cbfn_q */
222 };
223 
224 /* MGMT module */
225 struct csio_mgmtm {
226 	struct	csio_hw		*hw;		/* Pointer to HW moduel */
227 	int			eq_idx;		/* Egress queue index */
228 	int			iq_idx;		/* Ingress queue index */
229 	int			msi_vec;	/* MSI vector */
230 	struct list_head	active_q;	/* Outstanding ELS/CT */
231 	struct list_head	abort_q;	/* Outstanding abort req */
232 	struct list_head	cbfn_q;		/* Completion queue */
233 	struct list_head	mgmt_req_freelist; /* Free poll of reqs */
234 						/* ELSCT request freelist*/
235 	struct timer_list	mgmt_timer;	/* MGMT timer */
236 	struct csio_mgmtm_stats stats;		/* ELS/CT stats */
237 };
238 
239 struct csio_adap_desc {
240 	char model_no[16];
241 	char description[32];
242 };
243 
244 struct pci_params {
245 	uint16_t   vendor_id;
246 	uint16_t   device_id;
247 	int        vpd_cap_addr;
248 	uint16_t   speed;
249 	uint8_t    width;
250 };
251 
252 /* User configurable hw parameters */
253 struct csio_hw_params {
254 	uint32_t		sf_size;		/* serial flash
255 							 * size in bytes
256 							 */
257 	uint32_t		sf_nsec;		/* # of flash sectors */
258 	struct pci_params	pci;
259 	uint32_t		log_level;		/* Module-level for
260 							 * debug log.
261 							 */
262 };
263 
264 struct csio_vpd {
265 	uint32_t cclk;
266 	uint8_t ec[EC_LEN + 1];
267 	uint8_t sn[SERNUM_LEN + 1];
268 	uint8_t id[ID_LEN + 1];
269 };
270 
271 struct csio_pport {
272 	uint16_t	pcap;
273 	uint8_t		portid;
274 	uint8_t		link_status;
275 	uint16_t	link_speed;
276 	uint8_t		mac[6];
277 	uint8_t		mod_type;
278 	uint8_t		rsvd1;
279 	uint8_t		rsvd2;
280 	uint8_t		rsvd3;
281 };
282 
283 /* fcoe resource information */
284 struct csio_fcoe_res_info {
285 	uint16_t	e_d_tov;
286 	uint16_t	r_a_tov_seq;
287 	uint16_t	r_a_tov_els;
288 	uint16_t	r_r_tov;
289 	uint32_t	max_xchgs;
290 	uint32_t	max_ssns;
291 	uint32_t	used_xchgs;
292 	uint32_t	used_ssns;
293 	uint32_t	max_fcfs;
294 	uint32_t	max_vnps;
295 	uint32_t	used_fcfs;
296 	uint32_t	used_vnps;
297 };
298 
299 /* HW State machine Events */
300 enum csio_hw_ev {
301 	CSIO_HWE_CFG = (uint32_t)1, /* Starts off the State machine */
302 	CSIO_HWE_INIT,	         /* Config done, start Init      */
303 	CSIO_HWE_INIT_DONE,      /* Init Mailboxes sent, HW ready */
304 	CSIO_HWE_FATAL,		 /* Fatal error during initialization */
305 	CSIO_HWE_PCIERR_DETECTED,/* PCI error recovery detetced */
306 	CSIO_HWE_PCIERR_SLOT_RESET, /* Slot reset after PCI recoviery */
307 	CSIO_HWE_PCIERR_RESUME,  /* Resume after PCI error recovery */
308 	CSIO_HWE_QUIESCED,	 /* HBA quiesced */
309 	CSIO_HWE_HBA_RESET,      /* HBA reset requested */
310 	CSIO_HWE_HBA_RESET_DONE, /* HBA reset completed */
311 	CSIO_HWE_FW_DLOAD,       /* FW download requested */
312 	CSIO_HWE_PCI_REMOVE,     /* PCI de-instantiation */
313 	CSIO_HWE_SUSPEND,        /* HW suspend for Online(hot) replacement */
314 	CSIO_HWE_RESUME,         /* HW resume for Online(hot) replacement */
315 	CSIO_HWE_MAX,		 /* Max HW event */
316 };
317 
318 /* hw stats */
319 struct csio_hw_stats {
320 	uint32_t	n_evt_activeq;	/* Number of event in active Q */
321 	uint32_t	n_evt_freeq;	/* Number of event in free Q */
322 	uint32_t	n_evt_drop;	/* Number of event droped */
323 	uint32_t	n_evt_unexp;	/* Number of unexpected events */
324 	uint32_t	n_pcich_offline;/* Number of pci channel offline */
325 	uint32_t	n_lnlkup_miss;  /* Number of lnode lookup miss */
326 	uint32_t	n_cpl_fw6_msg;	/* Number of cpl fw6 message*/
327 	uint32_t	n_cpl_fw6_pld;	/* Number of cpl fw6 payload*/
328 	uint32_t	n_cpl_unexp;	/* Number of unexpected cpl */
329 	uint32_t	n_mbint_unexp;	/* Number of unexpected mbox */
330 					/* interrupt */
331 	uint32_t	n_plint_unexp;	/* Number of unexpected PL */
332 					/* interrupt */
333 	uint32_t	n_plint_cnt;	/* Number of PL interrupt */
334 	uint32_t	n_int_stray;	/* Number of stray interrupt */
335 	uint32_t	n_err;		/* Number of hw errors */
336 	uint32_t	n_err_fatal;	/* Number of fatal errors */
337 	uint32_t	n_err_nomem;	/* Number of memory alloc failure */
338 	uint32_t	n_err_io;	/* Number of IO failure */
339 	enum csio_hw_ev	n_evt_sm[CSIO_HWE_MAX];	/* Number of sm events */
340 	uint64_t	n_reset_start;  /* Start time after the reset */
341 	uint32_t	rsvd1;
342 };
343 
344 /* Defines for hw->flags */
345 #define CSIO_HWF_MASTER			0x00000001	/* This is the Master
346 							 * function for the
347 							 * card.
348 							 */
349 #define	CSIO_HWF_HW_INTR_ENABLED	0x00000002	/* Are HW Interrupt
350 							 * enable bit set?
351 							 */
352 #define	CSIO_HWF_FWEVT_PENDING		0x00000004	/* FW events pending */
353 #define	CSIO_HWF_Q_MEM_ALLOCED		0x00000008	/* Queues have been
354 							 * allocated memory.
355 							 */
356 #define	CSIO_HWF_Q_FW_ALLOCED		0x00000010	/* Queues have been
357 							 * allocated in FW.
358 							 */
359 #define CSIO_HWF_VPD_VALID		0x00000020	/* Valid VPD copied */
360 #define CSIO_HWF_DEVID_CACHED		0X00000040	/* PCI vendor & device
361 							 * id cached */
362 #define	CSIO_HWF_FWEVT_STOP		0x00000080	/* Stop processing
363 							 * FW events
364 							 */
365 #define CSIO_HWF_USING_SOFT_PARAMS	0x00000100      /* Using FW config
366 							 * params
367 							 */
368 #define	CSIO_HWF_HOST_INTR_ENABLED	0x00000200	/* Are host interrupts
369 							 * enabled?
370 							 */
371 
372 #define csio_is_hw_intr_enabled(__hw)	\
373 				((__hw)->flags & CSIO_HWF_HW_INTR_ENABLED)
374 #define csio_is_host_intr_enabled(__hw)	\
375 				((__hw)->flags & CSIO_HWF_HOST_INTR_ENABLED)
376 #define csio_is_hw_master(__hw)		((__hw)->flags & CSIO_HWF_MASTER)
377 #define csio_is_valid_vpd(__hw)		((__hw)->flags & CSIO_HWF_VPD_VALID)
378 #define csio_is_dev_id_cached(__hw)	((__hw)->flags & CSIO_HWF_DEVID_CACHED)
379 #define csio_valid_vpd_copied(__hw)	((__hw)->flags |= CSIO_HWF_VPD_VALID)
380 #define csio_dev_id_cached(__hw)	((__hw)->flags |= CSIO_HWF_DEVID_CACHED)
381 
382 /* Defines for intr_mode */
383 enum csio_intr_mode {
384 	CSIO_IM_NONE = 0,
385 	CSIO_IM_INTX = 1,
386 	CSIO_IM_MSI  = 2,
387 	CSIO_IM_MSIX = 3,
388 };
389 
390 /* Master HW structure: One per function */
391 struct csio_hw {
392 	struct csio_sm		sm;			/* State machine: should
393 							 * be the 1st member.
394 							 */
395 	spinlock_t		lock;			/* Lock for hw */
396 
397 	struct csio_scsim	scsim;			/* SCSI module*/
398 	struct csio_wrm		wrm;			/* Work request module*/
399 	struct pci_dev		*pdev;			/* PCI device */
400 
401 	void __iomem		*regstart;		/* Virtual address of
402 							 * register map
403 							 */
404 	/* SCSI queue sets */
405 	uint32_t		num_sqsets;		/* Number of SCSI
406 							 * queue sets */
407 	uint32_t		num_scsi_msix_cpus;	/* Number of CPUs that
408 							 * will be used
409 							 * for ingress
410 							 * processing.
411 							 */
412 
413 	struct csio_scsi_qset	sqset[CSIO_MAX_PPORTS][CSIO_MAX_SCSI_CPU];
414 	struct csio_scsi_cpu_info scsi_cpu_info[CSIO_MAX_PPORTS];
415 
416 	uint32_t		evtflag;		/* Event flag  */
417 	uint32_t		flags;			/* HW flags */
418 
419 	struct csio_mgmtm	mgmtm;			/* management module */
420 	struct csio_mbm		mbm;			/* Mailbox module */
421 
422 	/* Lnodes */
423 	uint32_t		num_lns;		/* Number of lnodes */
424 	struct csio_lnode	*rln;			/* Root lnode */
425 	struct list_head	sln_head;		/* Sibling node list
426 							 * list
427 							 */
428 	int			intr_iq_idx;		/* Forward interrupt
429 							 * queue.
430 							 */
431 	int			fwevt_iq_idx;		/* FW evt queue */
432 	struct work_struct	evtq_work;		/* Worker thread for
433 							 * HW events.
434 							 */
435 	struct list_head	evt_free_q;		/* freelist of evt
436 							 * elements
437 							 */
438 	struct list_head	evt_active_q;		/* active evt queue*/
439 
440 	/* board related info */
441 	char			name[32];
442 	char			hw_ver[16];
443 	char			model_desc[32];
444 	char			drv_version[32];
445 	char			fwrev_str[32];
446 	uint32_t		optrom_ver;
447 	uint32_t		fwrev;
448 	uint32_t		tp_vers;
449 	char			chip_ver;
450 	uint16_t		chip_id;		/* Tells T4/T5 chip */
451 	enum csio_dev_state	fw_state;
452 	struct csio_vpd		vpd;
453 
454 	uint8_t			pfn;			/* Physical Function
455 							 * number
456 							 */
457 	uint32_t		port_vec;		/* Port vector */
458 	uint8_t			num_pports;		/* Number of physical
459 							 * ports.
460 							 */
461 	uint8_t			rst_retries;		/* Reset retries */
462 	uint8_t			cur_evt;		/* current s/m evt */
463 	uint8_t			prev_evt;		/* Previous s/m evt */
464 	uint32_t		dev_num;		/* device number */
465 	struct csio_pport	pport[CSIO_MAX_PPORTS];	/* Ports (XGMACs) */
466 	struct csio_hw_params	params;			/* Hw parameters */
467 
468 	struct pci_pool		*scsi_pci_pool;		/* PCI pool for SCSI */
469 	mempool_t		*mb_mempool;		/* Mailbox memory pool*/
470 	mempool_t		*rnode_mempool;		/* rnode memory pool */
471 
472 	/* Interrupt */
473 	enum csio_intr_mode	intr_mode;		/* INTx, MSI, MSIX */
474 	uint32_t		fwevt_intr_idx;		/* FW evt MSIX/interrupt
475 							 * index
476 							 */
477 	uint32_t		nondata_intr_idx;	/* nondata MSIX/intr
478 							 * idx
479 							 */
480 
481 	uint8_t			cfg_neq;		/* FW configured no of
482 							 * egress queues
483 							 */
484 	uint8_t			cfg_niq;		/* FW configured no of
485 							 * iq queues.
486 							 */
487 
488 	struct csio_fcoe_res_info  fres_info;		/* Fcoe resource info */
489 	struct csio_hw_chip_ops	*chip_ops;		/* T4/T5 Chip specific
490 							 * Operations
491 							 */
492 
493 	/* MSIX vectors */
494 	struct csio_msix_entries msix_entries[CSIO_MAX_MSIX_VECS];
495 
496 	struct dentry		*debugfs_root;		/* Debug FS */
497 	struct csio_hw_stats	stats;			/* Hw statistics */
498 };
499 
500 /* Register access macros */
501 #define csio_reg(_b, _r)		((_b) + (_r))
502 
503 #define	csio_rd_reg8(_h, _r)		readb(csio_reg((_h)->regstart, (_r)))
504 #define	csio_rd_reg16(_h, _r)		readw(csio_reg((_h)->regstart, (_r)))
505 #define	csio_rd_reg32(_h, _r)		readl(csio_reg((_h)->regstart, (_r)))
506 #define	csio_rd_reg64(_h, _r)		readq(csio_reg((_h)->regstart, (_r)))
507 
508 #define	csio_wr_reg8(_h, _v, _r)	writeb((_v), \
509 						csio_reg((_h)->regstart, (_r)))
510 #define	csio_wr_reg16(_h, _v, _r)	writew((_v), \
511 						csio_reg((_h)->regstart, (_r)))
512 #define	csio_wr_reg32(_h, _v, _r)	writel((_v), \
513 						csio_reg((_h)->regstart, (_r)))
514 #define	csio_wr_reg64(_h, _v, _r)	writeq((_v), \
515 						csio_reg((_h)->regstart, (_r)))
516 
517 void csio_set_reg_field(struct csio_hw *, uint32_t, uint32_t, uint32_t);
518 
519 /* Core clocks <==> uSecs */
520 static inline uint32_t
521 csio_core_ticks_to_us(struct csio_hw *hw, uint32_t ticks)
522 {
523 	/* add Core Clock / 2 to round ticks to nearest uS */
524 	return (ticks * 1000 + hw->vpd.cclk/2) / hw->vpd.cclk;
525 }
526 
527 static inline uint32_t
528 csio_us_to_core_ticks(struct csio_hw *hw, uint32_t us)
529 {
530 	return (us * hw->vpd.cclk) / 1000;
531 }
532 
533 /* Easy access macros */
534 #define csio_hw_to_wrm(hw)		((struct csio_wrm *)(&(hw)->wrm))
535 #define csio_hw_to_mbm(hw)		((struct csio_mbm *)(&(hw)->mbm))
536 #define csio_hw_to_scsim(hw)		((struct csio_scsim *)(&(hw)->scsim))
537 #define csio_hw_to_mgmtm(hw)		((struct csio_mgmtm *)(&(hw)->mgmtm))
538 
539 #define CSIO_PCI_BUS(hw)		((hw)->pdev->bus->number)
540 #define CSIO_PCI_DEV(hw)		(PCI_SLOT((hw)->pdev->devfn))
541 #define CSIO_PCI_FUNC(hw)		(PCI_FUNC((hw)->pdev->devfn))
542 
543 #define csio_set_fwevt_intr_idx(_h, _i)		((_h)->fwevt_intr_idx = (_i))
544 #define csio_get_fwevt_intr_idx(_h)		((_h)->fwevt_intr_idx)
545 #define csio_set_nondata_intr_idx(_h, _i)	((_h)->nondata_intr_idx = (_i))
546 #define csio_get_nondata_intr_idx(_h)		((_h)->nondata_intr_idx)
547 
548 /* Printing/logging */
549 #define CSIO_DEVID(__dev)		((__dev)->dev_num)
550 #define CSIO_DEVID_LO(__dev)		(CSIO_DEVID((__dev)) & 0xFFFF)
551 #define CSIO_DEVID_HI(__dev)		((CSIO_DEVID((__dev)) >> 16) & 0xFFFF)
552 
553 #define csio_info(__hw, __fmt, ...)					\
554 			dev_info(&(__hw)->pdev->dev, __fmt, ##__VA_ARGS__)
555 
556 #define csio_fatal(__hw, __fmt, ...)					\
557 			dev_crit(&(__hw)->pdev->dev, __fmt, ##__VA_ARGS__)
558 
559 #define csio_err(__hw, __fmt, ...)					\
560 			dev_err(&(__hw)->pdev->dev, __fmt, ##__VA_ARGS__)
561 
562 #define csio_warn(__hw, __fmt, ...)					\
563 			dev_warn(&(__hw)->pdev->dev, __fmt, ##__VA_ARGS__)
564 
565 #ifdef __CSIO_DEBUG__
566 #define csio_dbg(__hw, __fmt, ...)					\
567 			csio_info((__hw), __fmt, ##__VA_ARGS__);
568 #else
569 #define csio_dbg(__hw, __fmt, ...)
570 #endif
571 
572 int csio_hw_wait_op_done_val(struct csio_hw *, int, uint32_t, int,
573 			     int, int, uint32_t *);
574 void csio_hw_tp_wr_bits_indirect(struct csio_hw *, unsigned int,
575 				 unsigned int, unsigned int);
576 int csio_mgmt_req_lookup(struct csio_mgmtm *, struct csio_ioreq *);
577 void csio_hw_intr_disable(struct csio_hw *);
578 int csio_hw_slow_intr_handler(struct csio_hw *);
579 int csio_handle_intr_status(struct csio_hw *, unsigned int,
580 			    const struct intr_info *);
581 
582 int csio_hw_start(struct csio_hw *);
583 int csio_hw_stop(struct csio_hw *);
584 int csio_hw_reset(struct csio_hw *);
585 int csio_is_hw_ready(struct csio_hw *);
586 int csio_is_hw_removing(struct csio_hw *);
587 
588 int csio_fwevtq_handler(struct csio_hw *);
589 void csio_evtq_worker(struct work_struct *);
590 int csio_enqueue_evt(struct csio_hw *, enum csio_evt, void *, uint16_t);
591 void csio_evtq_flush(struct csio_hw *hw);
592 
593 int csio_request_irqs(struct csio_hw *);
594 void csio_intr_enable(struct csio_hw *);
595 void csio_intr_disable(struct csio_hw *, bool);
596 void csio_hw_fatal_err(struct csio_hw *);
597 
598 struct csio_lnode *csio_lnode_alloc(struct csio_hw *);
599 int csio_config_queues(struct csio_hw *);
600 
601 int csio_hw_init(struct csio_hw *);
602 void csio_hw_exit(struct csio_hw *);
603 #endif /* ifndef __CSIO_HW_H__ */
604