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authorMichael Chan <mchan@broadcom.com>2009-06-08 21:14:43 -0400
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2009-06-09 11:22:42 -0400
commita463696039f7097ce87c21db3cf5c16cdcb3850d (patch)
tree3308681e117008282fd73a224215e0aab173262e /drivers/net/cnic.h
parent4edd473f208cff77ce1f7ef26d5a41f31fa198e0 (diff)
[SCSI] cnic: Add new Broadcom CNIC driver.
The CNIC driver controls BNX2 hardware rings and resources used by iSCSI. Most hardware resources for iSCSI are separate from those used for ethernet networking. iSCSI uses a separate MAC address and IP address. The CNIC driver creates a UIO interface to handle the non-offloaded packets such as ARP, etc in userspace. Signed-off-by: Michael Chan <mchan@broadcom.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/net/cnic.h')
-rw-r--r--drivers/net/cnic.h299
1 files changed, 299 insertions, 0 deletions
diff --git a/drivers/net/cnic.h b/drivers/net/cnic.h
new file mode 100644
index 000000000000..5192d4a9df5a
--- /dev/null
+++ b/drivers/net/cnic.h
@@ -0,0 +1,299 @@
1/* cnic.h: Broadcom CNIC core network driver.
2 *
3 * Copyright (c) 2006-2009 Broadcom Corporation
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation.
8 *
9 */
10
11
12#ifndef CNIC_H
13#define CNIC_H
14
15#define KWQ_PAGE_CNT 4
16#define KCQ_PAGE_CNT 16
17
18#define KWQ_CID 24
19#define KCQ_CID 25
20
21/*
22 * krnlq_context definition
23 */
24#define L5_KRNLQ_FLAGS 0x00000000
25#define L5_KRNLQ_SIZE 0x00000000
26#define L5_KRNLQ_TYPE 0x00000000
27#define KRNLQ_FLAGS_PG_SZ (0xf<<0)
28#define KRNLQ_FLAGS_PG_SZ_256 (0<<0)
29#define KRNLQ_FLAGS_PG_SZ_512 (1<<0)
30#define KRNLQ_FLAGS_PG_SZ_1K (2<<0)
31#define KRNLQ_FLAGS_PG_SZ_2K (3<<0)
32#define KRNLQ_FLAGS_PG_SZ_4K (4<<0)
33#define KRNLQ_FLAGS_PG_SZ_8K (5<<0)
34#define KRNLQ_FLAGS_PG_SZ_16K (6<<0)
35#define KRNLQ_FLAGS_PG_SZ_32K (7<<0)
36#define KRNLQ_FLAGS_PG_SZ_64K (8<<0)
37#define KRNLQ_FLAGS_PG_SZ_128K (9<<0)
38#define KRNLQ_FLAGS_PG_SZ_256K (10<<0)
39#define KRNLQ_FLAGS_PG_SZ_512K (11<<0)
40#define KRNLQ_FLAGS_PG_SZ_1M (12<<0)
41#define KRNLQ_FLAGS_PG_SZ_2M (13<<0)
42#define KRNLQ_FLAGS_QE_SELF_SEQ (1<<15)
43#define KRNLQ_SIZE_TYPE_SIZE ((((0x28 + 0x1f) & ~0x1f) / 0x20) << 16)
44#define KRNLQ_TYPE_TYPE (0xf<<28)
45#define KRNLQ_TYPE_TYPE_EMPTY (0<<28)
46#define KRNLQ_TYPE_TYPE_KRNLQ (6<<28)
47
48#define L5_KRNLQ_HOST_QIDX 0x00000004
49#define L5_KRNLQ_HOST_FW_QIDX 0x00000008
50#define L5_KRNLQ_NX_QE_SELF_SEQ 0x0000000c
51#define L5_KRNLQ_QE_SELF_SEQ_MAX 0x0000000c
52#define L5_KRNLQ_NX_QE_HADDR_HI 0x00000010
53#define L5_KRNLQ_NX_QE_HADDR_LO 0x00000014
54#define L5_KRNLQ_PGTBL_PGIDX 0x00000018
55#define L5_KRNLQ_NX_PG_QIDX 0x00000018
56#define L5_KRNLQ_PGTBL_NPAGES 0x0000001c
57#define L5_KRNLQ_QIDX_INCR 0x0000001c
58#define L5_KRNLQ_PGTBL_HADDR_HI 0x00000020
59#define L5_KRNLQ_PGTBL_HADDR_LO 0x00000024
60
61#define BNX2_PG_CTX_MAP 0x1a0034
62#define BNX2_ISCSI_CTX_MAP 0x1a0074
63
64struct cnic_redirect_entry {
65 struct dst_entry *old_dst;
66 struct dst_entry *new_dst;
67};
68
69#define MAX_COMPLETED_KCQE 64
70
71#define MAX_CNIC_L5_CONTEXT 256
72
73#define MAX_CM_SK_TBL_SZ MAX_CNIC_L5_CONTEXT
74
75#define MAX_ISCSI_TBL_SZ 256
76
77#define CNIC_LOCAL_PORT_MIN 60000
78#define CNIC_LOCAL_PORT_MAX 61000
79#define CNIC_LOCAL_PORT_RANGE (CNIC_LOCAL_PORT_MAX - CNIC_LOCAL_PORT_MIN)
80
81#define KWQE_CNT (BCM_PAGE_SIZE / sizeof(struct kwqe))
82#define KCQE_CNT (BCM_PAGE_SIZE / sizeof(struct kcqe))
83#define MAX_KWQE_CNT (KWQE_CNT - 1)
84#define MAX_KCQE_CNT (KCQE_CNT - 1)
85
86#define MAX_KWQ_IDX ((KWQ_PAGE_CNT * KWQE_CNT) - 1)
87#define MAX_KCQ_IDX ((KCQ_PAGE_CNT * KCQE_CNT) - 1)
88
89#define KWQ_PG(x) (((x) & ~MAX_KWQE_CNT) >> (BCM_PAGE_BITS - 5))
90#define KWQ_IDX(x) ((x) & MAX_KWQE_CNT)
91
92#define KCQ_PG(x) (((x) & ~MAX_KCQE_CNT) >> (BCM_PAGE_BITS - 5))
93#define KCQ_IDX(x) ((x) & MAX_KCQE_CNT)
94
95#define BNX2X_NEXT_KCQE(x) (((x) & (MAX_KCQE_CNT - 1)) == \
96 (MAX_KCQE_CNT - 1)) ? \
97 (x) + 2 : (x) + 1
98
99#define BNX2X_KWQ_DATA_PG(cp, x) ((x) / (cp)->kwq_16_data_pp)
100#define BNX2X_KWQ_DATA_IDX(cp, x) ((x) % (cp)->kwq_16_data_pp)
101#define BNX2X_KWQ_DATA(cp, x) \
102 &(cp)->kwq_16_data[BNX2X_KWQ_DATA_PG(cp, x)][BNX2X_KWQ_DATA_IDX(cp, x)]
103
104#define DEF_IPID_COUNT 0xc001
105
106#define DEF_KA_TIMEOUT 10000
107#define DEF_KA_INTERVAL 300000
108#define DEF_KA_MAX_PROBE_COUNT 3
109#define DEF_TOS 0
110#define DEF_TTL 0xfe
111#define DEF_SND_SEQ_SCALE 0
112#define DEF_RCV_BUF 0xffff
113#define DEF_SND_BUF 0xffff
114#define DEF_SEED 0
115#define DEF_MAX_RT_TIME 500
116#define DEF_MAX_DA_COUNT 2
117#define DEF_SWS_TIMER 1000
118#define DEF_MAX_CWND 0xffff
119
120struct cnic_ctx {
121 u32 cid;
122 void *ctx;
123 dma_addr_t mapping;
124};
125
126#define BNX2_MAX_CID 0x2000
127
128struct cnic_dma {
129 int num_pages;
130 void **pg_arr;
131 dma_addr_t *pg_map_arr;
132 int pgtbl_size;
133 u32 *pgtbl;
134 dma_addr_t pgtbl_map;
135};
136
137struct cnic_id_tbl {
138 spinlock_t lock;
139 u32 start;
140 u32 max;
141 u32 next;
142 unsigned long *table;
143};
144
145#define CNIC_KWQ16_DATA_SIZE 128
146
147struct kwqe_16_data {
148 u8 data[CNIC_KWQ16_DATA_SIZE];
149};
150
151struct cnic_iscsi {
152 struct cnic_dma task_array_info;
153 struct cnic_dma r2tq_info;
154 struct cnic_dma hq_info;
155};
156
157struct cnic_context {
158 u32 cid;
159 struct kwqe_16_data *kwqe_data;
160 dma_addr_t kwqe_data_mapping;
161 wait_queue_head_t waitq;
162 int wait_cond;
163 unsigned long timestamp;
164 u32 ctx_flags;
165#define CTX_FL_OFFLD_START 0x00000001
166 u8 ulp_proto_id;
167 union {
168 struct cnic_iscsi *iscsi;
169 } proto;
170};
171
172struct cnic_local {
173
174 spinlock_t cnic_ulp_lock;
175 void *ulp_handle[MAX_CNIC_ULP_TYPE];
176 unsigned long ulp_flags[MAX_CNIC_ULP_TYPE];
177#define ULP_F_INIT 0
178#define ULP_F_START 1
179 struct cnic_ulp_ops *ulp_ops[MAX_CNIC_ULP_TYPE];
180
181 /* protected by ulp_lock */
182 u32 cnic_local_flags;
183#define CNIC_LCL_FL_KWQ_INIT 0x00000001
184
185 struct cnic_dev *dev;
186
187 struct cnic_eth_dev *ethdev;
188
189 void *l2_ring;
190 dma_addr_t l2_ring_map;
191 int l2_ring_size;
192 int l2_rx_ring_size;
193
194 void *l2_buf;
195 dma_addr_t l2_buf_map;
196 int l2_buf_size;
197 int l2_single_buf_size;
198
199 u16 *rx_cons_ptr;
200 u16 *tx_cons_ptr;
201 u16 rx_cons;
202 u16 tx_cons;
203
204 u32 kwq_cid_addr;
205 u32 kcq_cid_addr;
206
207 struct cnic_dma kwq_info;
208 struct kwqe **kwq;
209
210 struct cnic_dma kwq_16_data_info;
211
212 u16 max_kwq_idx;
213
214 u16 kwq_prod_idx;
215 u32 kwq_io_addr;
216
217 u16 *kwq_con_idx_ptr;
218 u16 kwq_con_idx;
219
220 struct cnic_dma kcq_info;
221 struct kcqe **kcq;
222
223 u16 kcq_prod_idx;
224 u32 kcq_io_addr;
225
226 void *status_blk;
227 struct status_block_msix *bnx2_status_blk;
228 struct host_status_block *bnx2x_status_blk;
229
230 u32 status_blk_num;
231 u32 int_num;
232 u32 last_status_idx;
233 struct tasklet_struct cnic_irq_task;
234
235 struct kcqe *completed_kcq[MAX_COMPLETED_KCQE];
236
237 struct cnic_sock *csk_tbl;
238 struct cnic_id_tbl csk_port_tbl;
239
240 struct cnic_dma conn_buf_info;
241 struct cnic_dma gbl_buf_info;
242
243 struct cnic_iscsi *iscsi_tbl;
244 struct cnic_context *ctx_tbl;
245 struct cnic_id_tbl cid_tbl;
246 int max_iscsi_conn;
247 atomic_t iscsi_conn;
248
249 /* per connection parameters */
250 int num_iscsi_tasks;
251 int num_ccells;
252 int task_array_size;
253 int r2tq_size;
254 int hq_size;
255 int num_cqs;
256
257 struct cnic_ctx *ctx_arr;
258 int ctx_blks;
259 int ctx_blk_size;
260 int cids_per_blk;
261
262 u32 chip_id;
263 int func;
264 u32 shmem_base;
265
266 u32 uio_dev;
267 struct uio_info *cnic_uinfo;
268
269 struct cnic_ops *cnic_ops;
270 int (*start_hw)(struct cnic_dev *);
271 void (*stop_hw)(struct cnic_dev *);
272 void (*setup_pgtbl)(struct cnic_dev *,
273 struct cnic_dma *);
274 int (*alloc_resc)(struct cnic_dev *);
275 void (*free_resc)(struct cnic_dev *);
276 int (*start_cm)(struct cnic_dev *);
277 void (*stop_cm)(struct cnic_dev *);
278 void (*enable_int)(struct cnic_dev *);
279 void (*disable_int_sync)(struct cnic_dev *);
280 void (*ack_int)(struct cnic_dev *);
281 void (*close_conn)(struct cnic_sock *, u32 opcode);
282 u16 (*next_idx)(u16);
283 u16 (*hw_idx)(u16);
284};
285
286struct bnx2x_bd_chain_next {
287 u32 addr_lo;
288 u32 addr_hi;
289 u8 reserved[8];
290};
291
292#define ISCSI_RAMROD_CMD_ID_UPDATE_CONN (ISCSI_KCQE_OPCODE_UPDATE_CONN)
293#define ISCSI_RAMROD_CMD_ID_INIT (ISCSI_KCQE_OPCODE_INIT)
294
295#define CDU_REGION_NUMBER_XCM_AG 2
296#define CDU_REGION_NUMBER_UCM_AG 4
297
298#endif
299
generated by cgit v1.2.2 (git 2.25.0) at 2024-09-21 10:56:30 -0400