2 * drivers/dma/fsl_raid.h
4 * Freescale RAID Engine device driver
7 * Harninder Rai <harninder.rai@freescale.com>
8 * Naveen Burmi <naveenburmi@freescale.com>
11 * Xuelin Shi <xuelin.shi@freescale.com>
13 * Copyright (c) 2010-2012 Freescale Semiconductor, Inc.
15 * Redistribution and use in source and binary forms, with or without
16 * modification, are permitted provided that the following conditions are met:
17 * * Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * * Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 * * Neither the name of Freescale Semiconductor nor the
23 * names of its contributors may be used to endorse or promote products
24 * derived from this software without specific prior written permission.
26 * ALTERNATIVELY, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") as published by the Free Software
28 * Foundation, either version 2 of that License or (at your option) any
31 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
32 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
33 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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40 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
44 #define FSL_RE_MAX_CHANS 4
45 #define FSL_RE_DPAA_MODE BIT(30)
46 #define FSL_RE_NON_DPAA_MODE BIT(31)
47 #define FSL_RE_GFM_POLY 0x1d000000
48 #define FSL_RE_ADD_JOB(x) ((x) << 16)
49 #define FSL_RE_RMVD_JOB(x) ((x) << 16)
50 #define FSL_RE_CFG1_CBSI 0x08000000
51 #define FSL_RE_CFG1_CBS0 0x00080000
52 #define FSL_RE_SLOT_FULL_SHIFT 8
53 #define FSL_RE_SLOT_FULL(x) ((x) >> FSL_RE_SLOT_FULL_SHIFT)
54 #define FSL_RE_SLOT_AVAIL_SHIFT 8
55 #define FSL_RE_SLOT_AVAIL(x) ((x) >> FSL_RE_SLOT_AVAIL_SHIFT)
56 #define FSL_RE_PQ_OPCODE 0x1B
57 #define FSL_RE_XOR_OPCODE 0x1A
58 #define FSL_RE_MOVE_OPCODE 0x8
59 #define FSL_RE_FRAME_ALIGN 16
60 #define FSL_RE_BLOCK_SIZE 0x3 /* 4096 bytes */
61 #define FSL_RE_CACHEABLE_IO 0x0
62 #define FSL_RE_BUFFER_OUTPUT 0x0
63 #define FSL_RE_INTR_ON_ERROR 0x1
64 #define FSL_RE_DATA_DEP 0x1
65 #define FSL_RE_ENABLE_DPI 0x0
66 #define FSL_RE_RING_SIZE 0x400
67 #define FSL_RE_RING_SIZE_MASK (FSL_RE_RING_SIZE - 1)
68 #define FSL_RE_RING_SIZE_SHIFT 8
69 #define FSL_RE_ADDR_BIT_SHIFT 4
70 #define FSL_RE_ADDR_BIT_MASK (BIT(FSL_RE_ADDR_BIT_SHIFT) - 1)
71 #define FSL_RE_ERROR 0x40000000
72 #define FSL_RE_INTR 0x80000000
73 #define FSL_RE_CLR_INTR 0x80000000
74 #define FSL_RE_PAUSE 0x80000000
75 #define FSL_RE_ENABLE 0x80000000
76 #define FSL_RE_REG_LIODN_MASK 0x00000FFF
78 #define FSL_RE_CDB_OPCODE_MASK 0xF8000000
79 #define FSL_RE_CDB_OPCODE_SHIFT 27
80 #define FSL_RE_CDB_EXCLEN_MASK 0x03000000
81 #define FSL_RE_CDB_EXCLEN_SHIFT 24
82 #define FSL_RE_CDB_EXCLQ1_MASK 0x00F00000
83 #define FSL_RE_CDB_EXCLQ1_SHIFT 20
84 #define FSL_RE_CDB_EXCLQ2_MASK 0x000F0000
85 #define FSL_RE_CDB_EXCLQ2_SHIFT 16
86 #define FSL_RE_CDB_BLKSIZE_MASK 0x0000C000
87 #define FSL_RE_CDB_BLKSIZE_SHIFT 14
88 #define FSL_RE_CDB_CACHE_MASK 0x00003000
89 #define FSL_RE_CDB_CACHE_SHIFT 12
90 #define FSL_RE_CDB_BUFFER_MASK 0x00000800
91 #define FSL_RE_CDB_BUFFER_SHIFT 11
92 #define FSL_RE_CDB_ERROR_MASK 0x00000400
93 #define FSL_RE_CDB_ERROR_SHIFT 10
94 #define FSL_RE_CDB_NRCS_MASK 0x0000003C
95 #define FSL_RE_CDB_NRCS_SHIFT 6
96 #define FSL_RE_CDB_DEPEND_MASK 0x00000008
97 #define FSL_RE_CDB_DEPEND_SHIFT 3
98 #define FSL_RE_CDB_DPI_MASK 0x00000004
99 #define FSL_RE_CDB_DPI_SHIFT 2
102 * the largest cf block is 19*sizeof(struct cmpnd_frame), which is 304 bytes.
103 * here 19 = 1(cdb)+2(dest)+16(src), align to 64bytes, that is 320 bytes.
104 * the largest cdb block: struct pq_cdb which is 180 bytes, adding to cf block
105 * 320+180=500, align to 64bytes, that is 512 bytes.
107 #define FSL_RE_CF_DESC_SIZE 320
108 #define FSL_RE_CF_CDB_SIZE 512
109 #define FSL_RE_CF_CDB_ALIGN 64
112 /* General Configuration Registers */
113 __be32 global_config; /* Global Configuration Register */
115 __be32 galois_field_config; /* Galois Field Configuration Register */
117 __be32 jq_wrr_config; /* WRR Configuration register */
119 __be32 crc_config; /* CRC Configuration register */
121 __be32 system_reset; /* System Reset Register */
123 __be32 global_status; /* Global Status Register */
125 __be32 re_liodn_base; /* LIODN Base Register */
127 __be32 re_version_id; /* Version ID register of RE */
128 __be32 re_version_id_2; /* Version ID 2 register of RE */
130 __be32 host_config; /* Host I/F Configuration Register */
133 struct fsl_re_chan_cfg {
134 /* Registers for JR interface */
135 __be32 jr_config_0; /* Job Queue Configuration 0 Register */
136 __be32 jr_config_1; /* Job Queue Configuration 1 Register */
137 __be32 jr_interrupt_status; /* Job Queue Interrupt Status Register */
139 __be32 jr_command; /* Job Queue Command Register */
141 __be32 jr_status; /* Job Queue Status Register */
145 __be32 inbring_base_h; /* Inbound Ring Base Address Register - High */
146 __be32 inbring_base_l; /* Inbound Ring Base Address Register - Low */
147 __be32 inbring_size; /* Inbound Ring Size Register */
149 __be32 inbring_slot_avail; /* Inbound Ring Slot Available Register */
151 __be32 inbring_add_job; /* Inbound Ring Add Job Register */
153 __be32 inbring_cnsmr_indx; /* Inbound Ring Consumer Index Register */
157 __be32 oubring_base_h; /* Outbound Ring Base Address Register - High */
158 __be32 oubring_base_l; /* Outbound Ring Base Address Register - Low */
159 __be32 oubring_size; /* Outbound Ring Size Register */
161 __be32 oubring_job_rmvd; /* Outbound Ring Job Removed Register */
163 __be32 oubring_slot_full; /* Outbound Ring Slot Full Register */
165 __be32 oubring_prdcr_indx; /* Outbound Ring Producer Index */
169 * Command Descriptor Block (CDB) for unicast move command.
170 * In RAID Engine terms, memcpy is done through move command
172 struct fsl_re_move_cdb {
176 /* Data protection/integrity related fields */
177 #define FSL_RE_DPI_APPS_MASK 0xC0000000
178 #define FSL_RE_DPI_APPS_SHIFT 30
179 #define FSL_RE_DPI_REF_MASK 0x30000000
180 #define FSL_RE_DPI_REF_SHIFT 28
181 #define FSL_RE_DPI_GUARD_MASK 0x0C000000
182 #define FSL_RE_DPI_GUARD_SHIFT 26
183 #define FSL_RE_DPI_ATTR_MASK 0x03000000
184 #define FSL_RE_DPI_ATTR_SHIFT 24
185 #define FSL_RE_DPI_META_MASK 0x0000FFFF
193 * CDB for GenQ command. In RAID Engine terminology, XOR is
194 * done through this command
196 struct fsl_re_xor_cdb {
199 struct fsl_re_dpi dpi_dest_spec;
200 struct fsl_re_dpi dpi_src_spec[16];
203 /* CDB for no-op command */
204 struct fsl_re_noop_cdb {
209 * CDB for GenQQ command. In RAID Engine terminology, P/Q is
210 * done through this command
212 struct fsl_re_pq_cdb {
216 struct fsl_re_dpi dpi_dest_spec[2];
217 struct fsl_re_dpi dpi_src_spec[16];
221 #define FSL_RE_CF_ADDR_HIGH_MASK 0x000000FF
222 #define FSL_RE_CF_EXT_MASK 0x80000000
223 #define FSL_RE_CF_EXT_SHIFT 31
224 #define FSL_RE_CF_FINAL_MASK 0x40000000
225 #define FSL_RE_CF_FINAL_SHIFT 30
226 #define FSL_RE_CF_LENGTH_MASK 0x000FFFFF
227 #define FSL_RE_CF_BPID_MASK 0x00FF0000
228 #define FSL_RE_CF_BPID_SHIFT 16
229 #define FSL_RE_CF_OFFSET_MASK 0x00001FFF
231 struct fsl_re_cmpnd_frame {
238 /* Frame descriptor */
239 #define FSL_RE_HWDESC_LIODN_MASK 0x3F000000
240 #define FSL_RE_HWDESC_LIODN_SHIFT 24
241 #define FSL_RE_HWDESC_BPID_MASK 0x00FF0000
242 #define FSL_RE_HWDESC_BPID_SHIFT 16
243 #define FSL_RE_HWDESC_ELIODN_MASK 0x0000F000
244 #define FSL_RE_HWDESC_ELIODN_SHIFT 12
245 #define FSL_RE_HWDESC_FMT_SHIFT 29
246 #define FSL_RE_HWDESC_FMT_MASK (0x3 << FSL_RE_HWDESC_FMT_SHIFT)
248 struct fsl_re_hw_desc {
255 /* Raid Engine device private data */
256 struct fsl_re_drv_private {
258 struct dma_device dma_dev;
259 struct fsl_re_ctrl *re_regs;
260 struct fsl_re_chan *re_jrs[FSL_RE_MAX_CHANS];
261 struct dma_pool *cf_desc_pool;
262 struct dma_pool *hw_desc_pool;
265 /* Per job ring data structure */
268 spinlock_t desc_lock; /* queue lock */
269 struct list_head ack_q; /* wait to acked queue */
270 struct list_head active_q; /* already issued on hw, not completed */
271 struct list_head submit_q;
272 struct list_head free_q; /* alloc available queue */
274 struct fsl_re_drv_private *re_dev;
275 struct dma_chan chan;
276 struct fsl_re_chan_cfg *jrregs;
278 struct tasklet_struct irqtask;
281 /* hw descriptor ring for inbound queue*/
282 dma_addr_t inb_phys_addr;
283 struct fsl_re_hw_desc *inb_ring_virt_addr;
286 /* hw descriptor ring for outbound queue */
287 dma_addr_t oub_phys_addr;
288 struct fsl_re_hw_desc *oub_ring_virt_addr;
292 /* Async transaction descriptor */
294 struct dma_async_tx_descriptor async_tx;
295 struct list_head node;
296 struct fsl_re_hw_desc hwdesc;
297 struct fsl_re_chan *re_chan;
299 /* hwdesc will point to cf_addr */
304 dma_addr_t cdb_paddr;