2 * 2007+ Copyright (c) Evgeniy Polyakov <johnpol@2ka.mipt.ru>
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; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 #include <linux/kernel.h>
21 #include <linux/module.h>
22 #include <linux/moduleparam.h>
23 #include <linux/mod_devicetable.h>
24 #include <linux/interrupt.h>
25 #include <linux/pci.h>
26 #include <linux/slab.h>
27 #include <linux/delay.h>
29 #include <linux/dma-mapping.h>
30 #include <linux/scatterlist.h>
31 #include <linux/highmem.h>
32 #include <linux/interrupt.h>
33 #include <linux/crypto.h>
34 #include <linux/hw_random.h>
35 #include <linux/ktime.h>
37 #include <crypto/algapi.h>
38 #include <crypto/des.h>
40 #include <asm/kmap_types.h>
48 #define dprintk(f, a...) printk(f, ##a)
50 #define dprintk(f, a...) do {} while (0)
53 static char hifn_pll_ref
[sizeof("extNNN")] = "ext";
54 module_param_string(hifn_pll_ref
, hifn_pll_ref
, sizeof(hifn_pll_ref
), 0444);
55 MODULE_PARM_DESC(hifn_pll_ref
,
56 "PLL reference clock (pci[freq] or ext[freq], default ext)");
58 static atomic_t hifn_dev_number
;
60 #define ACRYPTO_OP_DECRYPT 0
61 #define ACRYPTO_OP_ENCRYPT 1
62 #define ACRYPTO_OP_HMAC 2
63 #define ACRYPTO_OP_RNG 3
65 #define ACRYPTO_MODE_ECB 0
66 #define ACRYPTO_MODE_CBC 1
67 #define ACRYPTO_MODE_CFB 2
68 #define ACRYPTO_MODE_OFB 3
70 #define ACRYPTO_TYPE_AES_128 0
71 #define ACRYPTO_TYPE_AES_192 1
72 #define ACRYPTO_TYPE_AES_256 2
73 #define ACRYPTO_TYPE_3DES 3
74 #define ACRYPTO_TYPE_DES 4
76 #define PCI_VENDOR_ID_HIFN 0x13A3
77 #define PCI_DEVICE_ID_HIFN_7955 0x0020
78 #define PCI_DEVICE_ID_HIFN_7956 0x001d
80 /* I/O region sizes */
82 #define HIFN_BAR0_SIZE 0x1000
83 #define HIFN_BAR1_SIZE 0x2000
84 #define HIFN_BAR2_SIZE 0x8000
88 #define HIFN_DMA_CRA 0x0C /* DMA Command Ring Address */
89 #define HIFN_DMA_SDRA 0x1C /* DMA Source Data Ring Address */
90 #define HIFN_DMA_RRA 0x2C /* DMA Result Ring Address */
91 #define HIFN_DMA_DDRA 0x3C /* DMA Destination Data Ring Address */
92 #define HIFN_DMA_STCTL 0x40 /* DMA Status and Control */
93 #define HIFN_DMA_INTREN 0x44 /* DMA Interrupt Enable */
94 #define HIFN_DMA_CFG1 0x48 /* DMA Configuration #1 */
95 #define HIFN_DMA_CFG2 0x6C /* DMA Configuration #2 */
96 #define HIFN_CHIP_ID 0x98 /* Chip ID */
99 * Processing Unit Registers (offset from BASEREG0)
101 #define HIFN_0_PUDATA 0x00 /* Processing Unit Data */
102 #define HIFN_0_PUCTRL 0x04 /* Processing Unit Control */
103 #define HIFN_0_PUISR 0x08 /* Processing Unit Interrupt Status */
104 #define HIFN_0_PUCNFG 0x0c /* Processing Unit Configuration */
105 #define HIFN_0_PUIER 0x10 /* Processing Unit Interrupt Enable */
106 #define HIFN_0_PUSTAT 0x14 /* Processing Unit Status/Chip ID */
107 #define HIFN_0_FIFOSTAT 0x18 /* FIFO Status */
108 #define HIFN_0_FIFOCNFG 0x1c /* FIFO Configuration */
109 #define HIFN_0_SPACESIZE 0x20 /* Register space size */
111 /* Processing Unit Control Register (HIFN_0_PUCTRL) */
112 #define HIFN_PUCTRL_CLRSRCFIFO 0x0010 /* clear source fifo */
113 #define HIFN_PUCTRL_STOP 0x0008 /* stop pu */
114 #define HIFN_PUCTRL_LOCKRAM 0x0004 /* lock ram */
115 #define HIFN_PUCTRL_DMAENA 0x0002 /* enable dma */
116 #define HIFN_PUCTRL_RESET 0x0001 /* Reset processing unit */
118 /* Processing Unit Interrupt Status Register (HIFN_0_PUISR) */
119 #define HIFN_PUISR_CMDINVAL 0x8000 /* Invalid command interrupt */
120 #define HIFN_PUISR_DATAERR 0x4000 /* Data error interrupt */
121 #define HIFN_PUISR_SRCFIFO 0x2000 /* Source FIFO ready interrupt */
122 #define HIFN_PUISR_DSTFIFO 0x1000 /* Destination FIFO ready interrupt */
123 #define HIFN_PUISR_DSTOVER 0x0200 /* Destination overrun interrupt */
124 #define HIFN_PUISR_SRCCMD 0x0080 /* Source command interrupt */
125 #define HIFN_PUISR_SRCCTX 0x0040 /* Source context interrupt */
126 #define HIFN_PUISR_SRCDATA 0x0020 /* Source data interrupt */
127 #define HIFN_PUISR_DSTDATA 0x0010 /* Destination data interrupt */
128 #define HIFN_PUISR_DSTRESULT 0x0004 /* Destination result interrupt */
130 /* Processing Unit Configuration Register (HIFN_0_PUCNFG) */
131 #define HIFN_PUCNFG_DRAMMASK 0xe000 /* DRAM size mask */
132 #define HIFN_PUCNFG_DSZ_256K 0x0000 /* 256k dram */
133 #define HIFN_PUCNFG_DSZ_512K 0x2000 /* 512k dram */
134 #define HIFN_PUCNFG_DSZ_1M 0x4000 /* 1m dram */
135 #define HIFN_PUCNFG_DSZ_2M 0x6000 /* 2m dram */
136 #define HIFN_PUCNFG_DSZ_4M 0x8000 /* 4m dram */
137 #define HIFN_PUCNFG_DSZ_8M 0xa000 /* 8m dram */
138 #define HIFN_PUNCFG_DSZ_16M 0xc000 /* 16m dram */
139 #define HIFN_PUCNFG_DSZ_32M 0xe000 /* 32m dram */
140 #define HIFN_PUCNFG_DRAMREFRESH 0x1800 /* DRAM refresh rate mask */
141 #define HIFN_PUCNFG_DRFR_512 0x0000 /* 512 divisor of ECLK */
142 #define HIFN_PUCNFG_DRFR_256 0x0800 /* 256 divisor of ECLK */
143 #define HIFN_PUCNFG_DRFR_128 0x1000 /* 128 divisor of ECLK */
144 #define HIFN_PUCNFG_TCALLPHASES 0x0200 /* your guess is as good as mine... */
145 #define HIFN_PUCNFG_TCDRVTOTEM 0x0100 /* your guess is as good as mine... */
146 #define HIFN_PUCNFG_BIGENDIAN 0x0080 /* DMA big endian mode */
147 #define HIFN_PUCNFG_BUS32 0x0040 /* Bus width 32bits */
148 #define HIFN_PUCNFG_BUS16 0x0000 /* Bus width 16 bits */
149 #define HIFN_PUCNFG_CHIPID 0x0020 /* Allow chipid from PUSTAT */
150 #define HIFN_PUCNFG_DRAM 0x0010 /* Context RAM is DRAM */
151 #define HIFN_PUCNFG_SRAM 0x0000 /* Context RAM is SRAM */
152 #define HIFN_PUCNFG_COMPSING 0x0004 /* Enable single compression context */
153 #define HIFN_PUCNFG_ENCCNFG 0x0002 /* Encryption configuration */
155 /* Processing Unit Interrupt Enable Register (HIFN_0_PUIER) */
156 #define HIFN_PUIER_CMDINVAL 0x8000 /* Invalid command interrupt */
157 #define HIFN_PUIER_DATAERR 0x4000 /* Data error interrupt */
158 #define HIFN_PUIER_SRCFIFO 0x2000 /* Source FIFO ready interrupt */
159 #define HIFN_PUIER_DSTFIFO 0x1000 /* Destination FIFO ready interrupt */
160 #define HIFN_PUIER_DSTOVER 0x0200 /* Destination overrun interrupt */
161 #define HIFN_PUIER_SRCCMD 0x0080 /* Source command interrupt */
162 #define HIFN_PUIER_SRCCTX 0x0040 /* Source context interrupt */
163 #define HIFN_PUIER_SRCDATA 0x0020 /* Source data interrupt */
164 #define HIFN_PUIER_DSTDATA 0x0010 /* Destination data interrupt */
165 #define HIFN_PUIER_DSTRESULT 0x0004 /* Destination result interrupt */
167 /* Processing Unit Status Register/Chip ID (HIFN_0_PUSTAT) */
168 #define HIFN_PUSTAT_CMDINVAL 0x8000 /* Invalid command interrupt */
169 #define HIFN_PUSTAT_DATAERR 0x4000 /* Data error interrupt */
170 #define HIFN_PUSTAT_SRCFIFO 0x2000 /* Source FIFO ready interrupt */
171 #define HIFN_PUSTAT_DSTFIFO 0x1000 /* Destination FIFO ready interrupt */
172 #define HIFN_PUSTAT_DSTOVER 0x0200 /* Destination overrun interrupt */
173 #define HIFN_PUSTAT_SRCCMD 0x0080 /* Source command interrupt */
174 #define HIFN_PUSTAT_SRCCTX 0x0040 /* Source context interrupt */
175 #define HIFN_PUSTAT_SRCDATA 0x0020 /* Source data interrupt */
176 #define HIFN_PUSTAT_DSTDATA 0x0010 /* Destination data interrupt */
177 #define HIFN_PUSTAT_DSTRESULT 0x0004 /* Destination result interrupt */
178 #define HIFN_PUSTAT_CHIPREV 0x00ff /* Chip revision mask */
179 #define HIFN_PUSTAT_CHIPENA 0xff00 /* Chip enabled mask */
180 #define HIFN_PUSTAT_ENA_2 0x1100 /* Level 2 enabled */
181 #define HIFN_PUSTAT_ENA_1 0x1000 /* Level 1 enabled */
182 #define HIFN_PUSTAT_ENA_0 0x3000 /* Level 0 enabled */
183 #define HIFN_PUSTAT_REV_2 0x0020 /* 7751 PT6/2 */
184 #define HIFN_PUSTAT_REV_3 0x0030 /* 7751 PT6/3 */
186 /* FIFO Status Register (HIFN_0_FIFOSTAT) */
187 #define HIFN_FIFOSTAT_SRC 0x7f00 /* Source FIFO available */
188 #define HIFN_FIFOSTAT_DST 0x007f /* Destination FIFO available */
190 /* FIFO Configuration Register (HIFN_0_FIFOCNFG) */
191 #define HIFN_FIFOCNFG_THRESHOLD 0x0400 /* must be written as 1 */
194 * DMA Interface Registers (offset from BASEREG1)
196 #define HIFN_1_DMA_CRAR 0x0c /* DMA Command Ring Address */
197 #define HIFN_1_DMA_SRAR 0x1c /* DMA Source Ring Address */
198 #define HIFN_1_DMA_RRAR 0x2c /* DMA Result Ring Address */
199 #define HIFN_1_DMA_DRAR 0x3c /* DMA Destination Ring Address */
200 #define HIFN_1_DMA_CSR 0x40 /* DMA Status and Control */
201 #define HIFN_1_DMA_IER 0x44 /* DMA Interrupt Enable */
202 #define HIFN_1_DMA_CNFG 0x48 /* DMA Configuration */
203 #define HIFN_1_PLL 0x4c /* 795x: PLL config */
204 #define HIFN_1_7811_RNGENA 0x60 /* 7811: rng enable */
205 #define HIFN_1_7811_RNGCFG 0x64 /* 7811: rng config */
206 #define HIFN_1_7811_RNGDAT 0x68 /* 7811: rng data */
207 #define HIFN_1_7811_RNGSTS 0x6c /* 7811: rng status */
208 #define HIFN_1_7811_MIPSRST 0x94 /* 7811: MIPS reset */
209 #define HIFN_1_REVID 0x98 /* Revision ID */
210 #define HIFN_1_UNLOCK_SECRET1 0xf4
211 #define HIFN_1_UNLOCK_SECRET2 0xfc
212 #define HIFN_1_PUB_RESET 0x204 /* Public/RNG Reset */
213 #define HIFN_1_PUB_BASE 0x300 /* Public Base Address */
214 #define HIFN_1_PUB_OPLEN 0x304 /* Public Operand Length */
215 #define HIFN_1_PUB_OP 0x308 /* Public Operand */
216 #define HIFN_1_PUB_STATUS 0x30c /* Public Status */
217 #define HIFN_1_PUB_IEN 0x310 /* Public Interrupt enable */
218 #define HIFN_1_RNG_CONFIG 0x314 /* RNG config */
219 #define HIFN_1_RNG_DATA 0x318 /* RNG data */
220 #define HIFN_1_PUB_MEM 0x400 /* start of Public key memory */
221 #define HIFN_1_PUB_MEMEND 0xbff /* end of Public key memory */
223 /* DMA Status and Control Register (HIFN_1_DMA_CSR) */
224 #define HIFN_DMACSR_D_CTRLMASK 0xc0000000 /* Destinition Ring Control */
225 #define HIFN_DMACSR_D_CTRL_NOP 0x00000000 /* Dest. Control: no-op */
226 #define HIFN_DMACSR_D_CTRL_DIS 0x40000000 /* Dest. Control: disable */
227 #define HIFN_DMACSR_D_CTRL_ENA 0x80000000 /* Dest. Control: enable */
228 #define HIFN_DMACSR_D_ABORT 0x20000000 /* Destinition Ring PCIAbort */
229 #define HIFN_DMACSR_D_DONE 0x10000000 /* Destinition Ring Done */
230 #define HIFN_DMACSR_D_LAST 0x08000000 /* Destinition Ring Last */
231 #define HIFN_DMACSR_D_WAIT 0x04000000 /* Destinition Ring Waiting */
232 #define HIFN_DMACSR_D_OVER 0x02000000 /* Destinition Ring Overflow */
233 #define HIFN_DMACSR_R_CTRL 0x00c00000 /* Result Ring Control */
234 #define HIFN_DMACSR_R_CTRL_NOP 0x00000000 /* Result Control: no-op */
235 #define HIFN_DMACSR_R_CTRL_DIS 0x00400000 /* Result Control: disable */
236 #define HIFN_DMACSR_R_CTRL_ENA 0x00800000 /* Result Control: enable */
237 #define HIFN_DMACSR_R_ABORT 0x00200000 /* Result Ring PCI Abort */
238 #define HIFN_DMACSR_R_DONE 0x00100000 /* Result Ring Done */
239 #define HIFN_DMACSR_R_LAST 0x00080000 /* Result Ring Last */
240 #define HIFN_DMACSR_R_WAIT 0x00040000 /* Result Ring Waiting */
241 #define HIFN_DMACSR_R_OVER 0x00020000 /* Result Ring Overflow */
242 #define HIFN_DMACSR_S_CTRL 0x0000c000 /* Source Ring Control */
243 #define HIFN_DMACSR_S_CTRL_NOP 0x00000000 /* Source Control: no-op */
244 #define HIFN_DMACSR_S_CTRL_DIS 0x00004000 /* Source Control: disable */
245 #define HIFN_DMACSR_S_CTRL_ENA 0x00008000 /* Source Control: enable */
246 #define HIFN_DMACSR_S_ABORT 0x00002000 /* Source Ring PCI Abort */
247 #define HIFN_DMACSR_S_DONE 0x00001000 /* Source Ring Done */
248 #define HIFN_DMACSR_S_LAST 0x00000800 /* Source Ring Last */
249 #define HIFN_DMACSR_S_WAIT 0x00000400 /* Source Ring Waiting */
250 #define HIFN_DMACSR_ILLW 0x00000200 /* Illegal write (7811 only) */
251 #define HIFN_DMACSR_ILLR 0x00000100 /* Illegal read (7811 only) */
252 #define HIFN_DMACSR_C_CTRL 0x000000c0 /* Command Ring Control */
253 #define HIFN_DMACSR_C_CTRL_NOP 0x00000000 /* Command Control: no-op */
254 #define HIFN_DMACSR_C_CTRL_DIS 0x00000040 /* Command Control: disable */
255 #define HIFN_DMACSR_C_CTRL_ENA 0x00000080 /* Command Control: enable */
256 #define HIFN_DMACSR_C_ABORT 0x00000020 /* Command Ring PCI Abort */
257 #define HIFN_DMACSR_C_DONE 0x00000010 /* Command Ring Done */
258 #define HIFN_DMACSR_C_LAST 0x00000008 /* Command Ring Last */
259 #define HIFN_DMACSR_C_WAIT 0x00000004 /* Command Ring Waiting */
260 #define HIFN_DMACSR_PUBDONE 0x00000002 /* Public op done (7951 only) */
261 #define HIFN_DMACSR_ENGINE 0x00000001 /* Command Ring Engine IRQ */
263 /* DMA Interrupt Enable Register (HIFN_1_DMA_IER) */
264 #define HIFN_DMAIER_D_ABORT 0x20000000 /* Destination Ring PCIAbort */
265 #define HIFN_DMAIER_D_DONE 0x10000000 /* Destination Ring Done */
266 #define HIFN_DMAIER_D_LAST 0x08000000 /* Destination Ring Last */
267 #define HIFN_DMAIER_D_WAIT 0x04000000 /* Destination Ring Waiting */
268 #define HIFN_DMAIER_D_OVER 0x02000000 /* Destination Ring Overflow */
269 #define HIFN_DMAIER_R_ABORT 0x00200000 /* Result Ring PCI Abort */
270 #define HIFN_DMAIER_R_DONE 0x00100000 /* Result Ring Done */
271 #define HIFN_DMAIER_R_LAST 0x00080000 /* Result Ring Last */
272 #define HIFN_DMAIER_R_WAIT 0x00040000 /* Result Ring Waiting */
273 #define HIFN_DMAIER_R_OVER 0x00020000 /* Result Ring Overflow */
274 #define HIFN_DMAIER_S_ABORT 0x00002000 /* Source Ring PCI Abort */
275 #define HIFN_DMAIER_S_DONE 0x00001000 /* Source Ring Done */
276 #define HIFN_DMAIER_S_LAST 0x00000800 /* Source Ring Last */
277 #define HIFN_DMAIER_S_WAIT 0x00000400 /* Source Ring Waiting */
278 #define HIFN_DMAIER_ILLW 0x00000200 /* Illegal write (7811 only) */
279 #define HIFN_DMAIER_ILLR 0x00000100 /* Illegal read (7811 only) */
280 #define HIFN_DMAIER_C_ABORT 0x00000020 /* Command Ring PCI Abort */
281 #define HIFN_DMAIER_C_DONE 0x00000010 /* Command Ring Done */
282 #define HIFN_DMAIER_C_LAST 0x00000008 /* Command Ring Last */
283 #define HIFN_DMAIER_C_WAIT 0x00000004 /* Command Ring Waiting */
284 #define HIFN_DMAIER_PUBDONE 0x00000002 /* public op done (7951 only) */
285 #define HIFN_DMAIER_ENGINE 0x00000001 /* Engine IRQ */
287 /* DMA Configuration Register (HIFN_1_DMA_CNFG) */
288 #define HIFN_DMACNFG_BIGENDIAN 0x10000000 /* big endian mode */
289 #define HIFN_DMACNFG_POLLFREQ 0x00ff0000 /* Poll frequency mask */
290 #define HIFN_DMACNFG_UNLOCK 0x00000800
291 #define HIFN_DMACNFG_POLLINVAL 0x00000700 /* Invalid Poll Scalar */
292 #define HIFN_DMACNFG_LAST 0x00000010 /* Host control LAST bit */
293 #define HIFN_DMACNFG_MODE 0x00000004 /* DMA mode */
294 #define HIFN_DMACNFG_DMARESET 0x00000002 /* DMA Reset # */
295 #define HIFN_DMACNFG_MSTRESET 0x00000001 /* Master Reset # */
297 /* PLL configuration register */
298 #define HIFN_PLL_REF_CLK_HBI 0x00000000 /* HBI reference clock */
299 #define HIFN_PLL_REF_CLK_PLL 0x00000001 /* PLL reference clock */
300 #define HIFN_PLL_BP 0x00000002 /* Reference clock bypass */
301 #define HIFN_PLL_PK_CLK_HBI 0x00000000 /* PK engine HBI clock */
302 #define HIFN_PLL_PK_CLK_PLL 0x00000008 /* PK engine PLL clock */
303 #define HIFN_PLL_PE_CLK_HBI 0x00000000 /* PE engine HBI clock */
304 #define HIFN_PLL_PE_CLK_PLL 0x00000010 /* PE engine PLL clock */
305 #define HIFN_PLL_RESERVED_1 0x00000400 /* Reserved bit, must be 1 */
306 #define HIFN_PLL_ND_SHIFT 11 /* Clock multiplier shift */
307 #define HIFN_PLL_ND_MULT_2 0x00000000 /* PLL clock multiplier 2 */
308 #define HIFN_PLL_ND_MULT_4 0x00000800 /* PLL clock multiplier 4 */
309 #define HIFN_PLL_ND_MULT_6 0x00001000 /* PLL clock multiplier 6 */
310 #define HIFN_PLL_ND_MULT_8 0x00001800 /* PLL clock multiplier 8 */
311 #define HIFN_PLL_ND_MULT_10 0x00002000 /* PLL clock multiplier 10 */
312 #define HIFN_PLL_ND_MULT_12 0x00002800 /* PLL clock multiplier 12 */
313 #define HIFN_PLL_IS_1_8 0x00000000 /* charge pump (mult. 1-8) */
314 #define HIFN_PLL_IS_9_12 0x00010000 /* charge pump (mult. 9-12) */
316 #define HIFN_PLL_FCK_MAX 266 /* Maximum PLL frequency */
318 /* Public key reset register (HIFN_1_PUB_RESET) */
319 #define HIFN_PUBRST_RESET 0x00000001 /* reset public/rng unit */
321 /* Public base address register (HIFN_1_PUB_BASE) */
322 #define HIFN_PUBBASE_ADDR 0x00003fff /* base address */
324 /* Public operand length register (HIFN_1_PUB_OPLEN) */
325 #define HIFN_PUBOPLEN_MOD_M 0x0000007f /* modulus length mask */
326 #define HIFN_PUBOPLEN_MOD_S 0 /* modulus length shift */
327 #define HIFN_PUBOPLEN_EXP_M 0x0003ff80 /* exponent length mask */
328 #define HIFN_PUBOPLEN_EXP_S 7 /* exponent lenght shift */
329 #define HIFN_PUBOPLEN_RED_M 0x003c0000 /* reducend length mask */
330 #define HIFN_PUBOPLEN_RED_S 18 /* reducend length shift */
332 /* Public operation register (HIFN_1_PUB_OP) */
333 #define HIFN_PUBOP_AOFFSET_M 0x0000007f /* A offset mask */
334 #define HIFN_PUBOP_AOFFSET_S 0 /* A offset shift */
335 #define HIFN_PUBOP_BOFFSET_M 0x00000f80 /* B offset mask */
336 #define HIFN_PUBOP_BOFFSET_S 7 /* B offset shift */
337 #define HIFN_PUBOP_MOFFSET_M 0x0003f000 /* M offset mask */
338 #define HIFN_PUBOP_MOFFSET_S 12 /* M offset shift */
339 #define HIFN_PUBOP_OP_MASK 0x003c0000 /* Opcode: */
340 #define HIFN_PUBOP_OP_NOP 0x00000000 /* NOP */
341 #define HIFN_PUBOP_OP_ADD 0x00040000 /* ADD */
342 #define HIFN_PUBOP_OP_ADDC 0x00080000 /* ADD w/carry */
343 #define HIFN_PUBOP_OP_SUB 0x000c0000 /* SUB */
344 #define HIFN_PUBOP_OP_SUBC 0x00100000 /* SUB w/carry */
345 #define HIFN_PUBOP_OP_MODADD 0x00140000 /* Modular ADD */
346 #define HIFN_PUBOP_OP_MODSUB 0x00180000 /* Modular SUB */
347 #define HIFN_PUBOP_OP_INCA 0x001c0000 /* INC A */
348 #define HIFN_PUBOP_OP_DECA 0x00200000 /* DEC A */
349 #define HIFN_PUBOP_OP_MULT 0x00240000 /* MULT */
350 #define HIFN_PUBOP_OP_MODMULT 0x00280000 /* Modular MULT */
351 #define HIFN_PUBOP_OP_MODRED 0x002c0000 /* Modular RED */
352 #define HIFN_PUBOP_OP_MODEXP 0x00300000 /* Modular EXP */
354 /* Public status register (HIFN_1_PUB_STATUS) */
355 #define HIFN_PUBSTS_DONE 0x00000001 /* operation done */
356 #define HIFN_PUBSTS_CARRY 0x00000002 /* carry */
358 /* Public interrupt enable register (HIFN_1_PUB_IEN) */
359 #define HIFN_PUBIEN_DONE 0x00000001 /* operation done interrupt */
361 /* Random number generator config register (HIFN_1_RNG_CONFIG) */
362 #define HIFN_RNGCFG_ENA 0x00000001 /* enable rng */
364 #define HIFN_NAMESIZE 32
365 #define HIFN_MAX_RESULT_ORDER 5
367 #define HIFN_D_CMD_RSIZE 24*4
368 #define HIFN_D_SRC_RSIZE 80*4
369 #define HIFN_D_DST_RSIZE 80*4
370 #define HIFN_D_RES_RSIZE 24*4
372 #define HIFN_D_DST_DALIGN 4
374 #define HIFN_QUEUE_LENGTH HIFN_D_CMD_RSIZE-5
376 #define AES_MIN_KEY_SIZE 16
377 #define AES_MAX_KEY_SIZE 32
379 #define HIFN_DES_KEY_LENGTH 8
380 #define HIFN_3DES_KEY_LENGTH 24
381 #define HIFN_MAX_CRYPT_KEY_LENGTH AES_MAX_KEY_SIZE
382 #define HIFN_IV_LENGTH 8
383 #define HIFN_AES_IV_LENGTH 16
384 #define HIFN_MAX_IV_LENGTH HIFN_AES_IV_LENGTH
386 #define HIFN_MAC_KEY_LENGTH 64
387 #define HIFN_MD5_LENGTH 16
388 #define HIFN_SHA1_LENGTH 20
389 #define HIFN_MAC_TRUNC_LENGTH 12
391 #define HIFN_MAX_COMMAND (8 + 8 + 8 + 64 + 260)
392 #define HIFN_MAX_RESULT (8 + 4 + 4 + 20 + 4)
393 #define HIFN_USED_RESULT 12
402 struct hifn_desc cmdr
[HIFN_D_CMD_RSIZE
+1];
403 struct hifn_desc srcr
[HIFN_D_SRC_RSIZE
+1];
404 struct hifn_desc dstr
[HIFN_D_DST_RSIZE
+1];
405 struct hifn_desc resr
[HIFN_D_RES_RSIZE
+1];
407 u8 command_bufs
[HIFN_D_CMD_RSIZE
][HIFN_MAX_COMMAND
];
408 u8 result_bufs
[HIFN_D_CMD_RSIZE
][HIFN_MAX_RESULT
];
410 u64 test_src
, test_dst
;
413 * Our current positions for insertion and removal from the descriptor
416 volatile int cmdi
, srci
, dsti
, resi
;
417 volatile int cmdu
, srcu
, dstu
, resu
;
418 int cmdk
, srck
, dstk
, resk
;
421 #define HIFN_FLAG_CMD_BUSY (1<<0)
422 #define HIFN_FLAG_SRC_BUSY (1<<1)
423 #define HIFN_FLAG_DST_BUSY (1<<2)
424 #define HIFN_FLAG_RES_BUSY (1<<3)
425 #define HIFN_FLAG_OLD_KEY (1<<4)
427 #define HIFN_DEFAULT_ACTIVE_NUM 5
431 char name
[HIFN_NAMESIZE
];
435 struct pci_dev
*pdev
;
436 void __iomem
*bar
[3];
438 unsigned long result_mem
;
446 void *sa
[HIFN_D_RES_RSIZE
];
454 struct delayed_work work
;
456 unsigned long success
;
457 unsigned long prev_success
;
461 struct tasklet_struct tasklet
;
463 struct crypto_queue queue
;
464 struct list_head alg_list
;
466 unsigned int pk_clk_freq
;
468 #ifdef CONFIG_CRYPTO_DEV_HIFN_795X_RNG
469 unsigned int rng_wait_time
;
475 #define HIFN_D_LENGTH 0x0000ffff
476 #define HIFN_D_NOINVALID 0x01000000
477 #define HIFN_D_MASKDONEIRQ 0x02000000
478 #define HIFN_D_DESTOVER 0x04000000
479 #define HIFN_D_OVER 0x08000000
480 #define HIFN_D_LAST 0x20000000
481 #define HIFN_D_JUMP 0x40000000
482 #define HIFN_D_VALID 0x80000000
484 struct hifn_base_command
486 volatile __le16 masks
;
487 volatile __le16 session_num
;
488 volatile __le16 total_source_count
;
489 volatile __le16 total_dest_count
;
492 #define HIFN_BASE_CMD_COMP 0x0100 /* enable compression engine */
493 #define HIFN_BASE_CMD_PAD 0x0200 /* enable padding engine */
494 #define HIFN_BASE_CMD_MAC 0x0400 /* enable MAC engine */
495 #define HIFN_BASE_CMD_CRYPT 0x0800 /* enable crypt engine */
496 #define HIFN_BASE_CMD_DECODE 0x2000
497 #define HIFN_BASE_CMD_SRCLEN_M 0xc000
498 #define HIFN_BASE_CMD_SRCLEN_S 14
499 #define HIFN_BASE_CMD_DSTLEN_M 0x3000
500 #define HIFN_BASE_CMD_DSTLEN_S 12
501 #define HIFN_BASE_CMD_LENMASK_HI 0x30000
502 #define HIFN_BASE_CMD_LENMASK_LO 0x0ffff
505 * Structure to help build up the command data structure.
507 struct hifn_crypt_command
509 volatile __le16 masks
;
510 volatile __le16 header_skip
;
511 volatile __le16 source_count
;
512 volatile __le16 reserved
;
515 #define HIFN_CRYPT_CMD_ALG_MASK 0x0003 /* algorithm: */
516 #define HIFN_CRYPT_CMD_ALG_DES 0x0000 /* DES */
517 #define HIFN_CRYPT_CMD_ALG_3DES 0x0001 /* 3DES */
518 #define HIFN_CRYPT_CMD_ALG_RC4 0x0002 /* RC4 */
519 #define HIFN_CRYPT_CMD_ALG_AES 0x0003 /* AES */
520 #define HIFN_CRYPT_CMD_MODE_MASK 0x0018 /* Encrypt mode: */
521 #define HIFN_CRYPT_CMD_MODE_ECB 0x0000 /* ECB */
522 #define HIFN_CRYPT_CMD_MODE_CBC 0x0008 /* CBC */
523 #define HIFN_CRYPT_CMD_MODE_CFB 0x0010 /* CFB */
524 #define HIFN_CRYPT_CMD_MODE_OFB 0x0018 /* OFB */
525 #define HIFN_CRYPT_CMD_CLR_CTX 0x0040 /* clear context */
526 #define HIFN_CRYPT_CMD_KSZ_MASK 0x0600 /* AES key size: */
527 #define HIFN_CRYPT_CMD_KSZ_128 0x0000 /* 128 bit */
528 #define HIFN_CRYPT_CMD_KSZ_192 0x0200 /* 192 bit */
529 #define HIFN_CRYPT_CMD_KSZ_256 0x0400 /* 256 bit */
530 #define HIFN_CRYPT_CMD_NEW_KEY 0x0800 /* expect new key */
531 #define HIFN_CRYPT_CMD_NEW_IV 0x1000 /* expect new iv */
532 #define HIFN_CRYPT_CMD_SRCLEN_M 0xc000
533 #define HIFN_CRYPT_CMD_SRCLEN_S 14
536 * Structure to help build up the command data structure.
538 struct hifn_mac_command
540 volatile __le16 masks
;
541 volatile __le16 header_skip
;
542 volatile __le16 source_count
;
543 volatile __le16 reserved
;
546 #define HIFN_MAC_CMD_ALG_MASK 0x0001
547 #define HIFN_MAC_CMD_ALG_SHA1 0x0000
548 #define HIFN_MAC_CMD_ALG_MD5 0x0001
549 #define HIFN_MAC_CMD_MODE_MASK 0x000c
550 #define HIFN_MAC_CMD_MODE_HMAC 0x0000
551 #define HIFN_MAC_CMD_MODE_SSL_MAC 0x0004
552 #define HIFN_MAC_CMD_MODE_HASH 0x0008
553 #define HIFN_MAC_CMD_MODE_FULL 0x0004
554 #define HIFN_MAC_CMD_TRUNC 0x0010
555 #define HIFN_MAC_CMD_RESULT 0x0020
556 #define HIFN_MAC_CMD_APPEND 0x0040
557 #define HIFN_MAC_CMD_SRCLEN_M 0xc000
558 #define HIFN_MAC_CMD_SRCLEN_S 14
561 * MAC POS IPsec initiates authentication after encryption on encodes
562 * and before decryption on decodes.
564 #define HIFN_MAC_CMD_POS_IPSEC 0x0200
565 #define HIFN_MAC_CMD_NEW_KEY 0x0800
567 struct hifn_comp_command
569 volatile __le16 masks
;
570 volatile __le16 header_skip
;
571 volatile __le16 source_count
;
572 volatile __le16 reserved
;
575 #define HIFN_COMP_CMD_SRCLEN_M 0xc000
576 #define HIFN_COMP_CMD_SRCLEN_S 14
577 #define HIFN_COMP_CMD_ONE 0x0100 /* must be one */
578 #define HIFN_COMP_CMD_CLEARHIST 0x0010 /* clear history */
579 #define HIFN_COMP_CMD_UPDATEHIST 0x0008 /* update history */
580 #define HIFN_COMP_CMD_LZS_STRIP0 0x0004 /* LZS: strip zero */
581 #define HIFN_COMP_CMD_MPPC_RESTART 0x0004 /* MPPC: restart */
582 #define HIFN_COMP_CMD_ALG_MASK 0x0001 /* compression mode: */
583 #define HIFN_COMP_CMD_ALG_MPPC 0x0001 /* MPPC */
584 #define HIFN_COMP_CMD_ALG_LZS 0x0000 /* LZS */
586 struct hifn_base_result
588 volatile __le16 flags
;
589 volatile __le16 session
;
590 volatile __le16 src_cnt
; /* 15:0 of source count */
591 volatile __le16 dst_cnt
; /* 15:0 of dest count */
594 #define HIFN_BASE_RES_DSTOVERRUN 0x0200 /* destination overrun */
595 #define HIFN_BASE_RES_SRCLEN_M 0xc000 /* 17:16 of source count */
596 #define HIFN_BASE_RES_SRCLEN_S 14
597 #define HIFN_BASE_RES_DSTLEN_M 0x3000 /* 17:16 of dest count */
598 #define HIFN_BASE_RES_DSTLEN_S 12
600 struct hifn_comp_result
602 volatile __le16 flags
;
606 #define HIFN_COMP_RES_LCB_M 0xff00 /* longitudinal check byte */
607 #define HIFN_COMP_RES_LCB_S 8
608 #define HIFN_COMP_RES_RESTART 0x0004 /* MPPC: restart */
609 #define HIFN_COMP_RES_ENDMARKER 0x0002 /* LZS: end marker seen */
610 #define HIFN_COMP_RES_SRC_NOTZERO 0x0001 /* source expired */
612 struct hifn_mac_result
614 volatile __le16 flags
;
615 volatile __le16 reserved
;
616 /* followed by 0, 6, 8, or 10 u16's of the MAC, then crypt */
619 #define HIFN_MAC_RES_MISCOMPARE 0x0002 /* compare failed */
620 #define HIFN_MAC_RES_SRC_NOTZERO 0x0001 /* source expired */
622 struct hifn_crypt_result
624 volatile __le16 flags
;
625 volatile __le16 reserved
;
628 #define HIFN_CRYPT_RES_SRC_NOTZERO 0x0001 /* source expired */
630 #ifndef HIFN_POLL_FREQUENCY
631 #define HIFN_POLL_FREQUENCY 0x1
634 #ifndef HIFN_POLL_SCALAR
635 #define HIFN_POLL_SCALAR 0x0
638 #define HIFN_MAX_SEGLEN 0xffff /* maximum dma segment len */
639 #define HIFN_MAX_DMALEN 0x3ffff /* maximum dma length */
641 struct hifn_crypto_alg
643 struct list_head entry
;
644 struct crypto_alg alg
;
645 struct hifn_device
*dev
;
648 #define ASYNC_SCATTERLIST_CACHE 16
650 #define ASYNC_FLAGS_MISALIGNED (1<<0)
652 struct ablkcipher_walk
654 struct scatterlist cache
[ASYNC_SCATTERLIST_CACHE
];
661 u8 key
[HIFN_MAX_CRYPT_KEY_LENGTH
], *iv
;
662 struct hifn_device
*dev
;
663 unsigned int keysize
, ivsize
;
664 u8 op
, type
, mode
, unused
;
665 struct ablkcipher_walk walk
;
669 #define crypto_alg_to_hifn(a) container_of(a, struct hifn_crypto_alg, alg)
671 static inline u32
hifn_read_0(struct hifn_device
*dev
, u32 reg
)
675 ret
= readl(dev
->bar
[0] + reg
);
680 static inline u32
hifn_read_1(struct hifn_device
*dev
, u32 reg
)
684 ret
= readl(dev
->bar
[1] + reg
);
689 static inline void hifn_write_0(struct hifn_device
*dev
, u32 reg
, u32 val
)
691 writel((__force u32
)cpu_to_le32(val
), dev
->bar
[0] + reg
);
694 static inline void hifn_write_1(struct hifn_device
*dev
, u32 reg
, u32 val
)
696 writel((__force u32
)cpu_to_le32(val
), dev
->bar
[1] + reg
);
699 static void hifn_wait_puc(struct hifn_device
*dev
)
704 for (i
=10000; i
> 0; --i
) {
705 ret
= hifn_read_0(dev
, HIFN_0_PUCTRL
);
706 if (!(ret
& HIFN_PUCTRL_RESET
))
713 dprintk("%s: Failed to reset PUC unit.\n", dev
->name
);
716 static void hifn_reset_puc(struct hifn_device
*dev
)
718 hifn_write_0(dev
, HIFN_0_PUCTRL
, HIFN_PUCTRL_DMAENA
);
722 static void hifn_stop_device(struct hifn_device
*dev
)
724 hifn_write_1(dev
, HIFN_1_DMA_CSR
,
725 HIFN_DMACSR_D_CTRL_DIS
| HIFN_DMACSR_R_CTRL_DIS
|
726 HIFN_DMACSR_S_CTRL_DIS
| HIFN_DMACSR_C_CTRL_DIS
);
727 hifn_write_0(dev
, HIFN_0_PUIER
, 0);
728 hifn_write_1(dev
, HIFN_1_DMA_IER
, 0);
731 static void hifn_reset_dma(struct hifn_device
*dev
, int full
)
733 hifn_stop_device(dev
);
736 * Setting poll frequency and others to 0.
738 hifn_write_1(dev
, HIFN_1_DMA_CNFG
, HIFN_DMACNFG_MSTRESET
|
739 HIFN_DMACNFG_DMARESET
| HIFN_DMACNFG_MODE
);
746 hifn_write_1(dev
, HIFN_1_DMA_CNFG
, HIFN_DMACNFG_MODE
);
749 hifn_write_1(dev
, HIFN_1_DMA_CNFG
, HIFN_DMACNFG_MODE
|
750 HIFN_DMACNFG_MSTRESET
);
754 hifn_write_1(dev
, HIFN_1_DMA_CNFG
, HIFN_DMACNFG_MSTRESET
|
755 HIFN_DMACNFG_DMARESET
| HIFN_DMACNFG_MODE
);
760 static u32
hifn_next_signature(u_int32_t a
, u_int cnt
)
765 for (i
= 0; i
< cnt
; i
++) {
775 a
= (v
& 1) ^ (a
<< 1);
781 static struct pci2id
{
788 PCI_DEVICE_ID_HIFN_7955
,
789 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
790 0x00, 0x00, 0x00, 0x00, 0x00 }
794 PCI_DEVICE_ID_HIFN_7956
,
795 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
796 0x00, 0x00, 0x00, 0x00, 0x00 }
800 #ifdef CONFIG_CRYPTO_DEV_HIFN_795X_RNG
801 static int hifn_rng_data_present(struct hwrng
*rng
, int wait
)
803 struct hifn_device
*dev
= (struct hifn_device
*)rng
->priv
;
806 nsec
= ktime_to_ns(ktime_sub(ktime_get(), dev
->rngtime
));
807 nsec
-= dev
->rng_wait_time
;
816 static int hifn_rng_data_read(struct hwrng
*rng
, u32
*data
)
818 struct hifn_device
*dev
= (struct hifn_device
*)rng
->priv
;
820 *data
= hifn_read_1(dev
, HIFN_1_RNG_DATA
);
821 dev
->rngtime
= ktime_get();
825 static int hifn_register_rng(struct hifn_device
*dev
)
828 * We must wait at least 256 Pk_clk cycles between two reads of the rng.
830 dev
->rng_wait_time
= DIV_ROUND_UP(NSEC_PER_SEC
, dev
->pk_clk_freq
) *
833 dev
->rng
.name
= dev
->name
;
834 dev
->rng
.data_present
= hifn_rng_data_present
,
835 dev
->rng
.data_read
= hifn_rng_data_read
,
836 dev
->rng
.priv
= (unsigned long)dev
;
838 return hwrng_register(&dev
->rng
);
841 static void hifn_unregister_rng(struct hifn_device
*dev
)
843 hwrng_unregister(&dev
->rng
);
846 #define hifn_register_rng(dev) 0
847 #define hifn_unregister_rng(dev)
850 static int hifn_init_pubrng(struct hifn_device
*dev
)
854 hifn_write_1(dev
, HIFN_1_PUB_RESET
, hifn_read_1(dev
, HIFN_1_PUB_RESET
) |
857 for (i
=100; i
> 0; --i
) {
860 if ((hifn_read_1(dev
, HIFN_1_PUB_RESET
) & HIFN_PUBRST_RESET
) == 0)
865 dprintk("Chip %s: Failed to initialise public key engine.\n",
868 hifn_write_1(dev
, HIFN_1_PUB_IEN
, HIFN_PUBIEN_DONE
);
869 dev
->dmareg
|= HIFN_DMAIER_PUBDONE
;
870 hifn_write_1(dev
, HIFN_1_DMA_IER
, dev
->dmareg
);
872 dprintk("Chip %s: Public key engine has been sucessfully "
873 "initialised.\n", dev
->name
);
880 hifn_write_1(dev
, HIFN_1_RNG_CONFIG
,
881 hifn_read_1(dev
, HIFN_1_RNG_CONFIG
) | HIFN_RNGCFG_ENA
);
882 dprintk("Chip %s: RNG engine has been successfully initialised.\n",
885 #ifdef CONFIG_CRYPTO_DEV_HIFN_795X_RNG
886 /* First value must be discarded */
887 hifn_read_1(dev
, HIFN_1_RNG_DATA
);
888 dev
->rngtime
= ktime_get();
893 static int hifn_enable_crypto(struct hifn_device
*dev
)
899 for (i
= 0; i
< sizeof(pci2id
)/sizeof(pci2id
[0]); i
++) {
900 if (pci2id
[i
].pci_vendor
== dev
->pdev
->vendor
&&
901 pci2id
[i
].pci_prod
== dev
->pdev
->device
) {
902 offtbl
= pci2id
[i
].card_id
;
907 if (offtbl
== NULL
) {
908 dprintk("Chip %s: Unknown card!\n", dev
->name
);
912 dmacfg
= hifn_read_1(dev
, HIFN_1_DMA_CNFG
);
914 hifn_write_1(dev
, HIFN_1_DMA_CNFG
,
915 HIFN_DMACNFG_UNLOCK
| HIFN_DMACNFG_MSTRESET
|
916 HIFN_DMACNFG_DMARESET
| HIFN_DMACNFG_MODE
);
918 addr
= hifn_read_1(dev
, HIFN_1_UNLOCK_SECRET1
);
920 hifn_write_1(dev
, HIFN_1_UNLOCK_SECRET2
, 0);
923 for (i
=0; i
<12; ++i
) {
924 addr
= hifn_next_signature(addr
, offtbl
[i
] + 0x101);
925 hifn_write_1(dev
, HIFN_1_UNLOCK_SECRET2
, addr
);
929 hifn_write_1(dev
, HIFN_1_DMA_CNFG
, dmacfg
);
931 dprintk("Chip %s: %s.\n", dev
->name
, pci_name(dev
->pdev
));
936 static void hifn_init_dma(struct hifn_device
*dev
)
938 struct hifn_dma
*dma
= (struct hifn_dma
*)dev
->desc_virt
;
939 u32 dptr
= dev
->desc_dma
;
942 for (i
=0; i
<HIFN_D_CMD_RSIZE
; ++i
)
943 dma
->cmdr
[i
].p
= __cpu_to_le32(dptr
+
944 offsetof(struct hifn_dma
, command_bufs
[i
][0]));
945 for (i
=0; i
<HIFN_D_RES_RSIZE
; ++i
)
946 dma
->resr
[i
].p
= __cpu_to_le32(dptr
+
947 offsetof(struct hifn_dma
, result_bufs
[i
][0]));
950 * Setup LAST descriptors.
952 dma
->cmdr
[HIFN_D_CMD_RSIZE
].p
= __cpu_to_le32(dptr
+
953 offsetof(struct hifn_dma
, cmdr
[0]));
954 dma
->srcr
[HIFN_D_SRC_RSIZE
].p
= __cpu_to_le32(dptr
+
955 offsetof(struct hifn_dma
, srcr
[0]));
956 dma
->dstr
[HIFN_D_DST_RSIZE
].p
= __cpu_to_le32(dptr
+
957 offsetof(struct hifn_dma
, dstr
[0]));
958 dma
->resr
[HIFN_D_RES_RSIZE
].p
= __cpu_to_le32(dptr
+
959 offsetof(struct hifn_dma
, resr
[0]));
961 dma
->cmdu
= dma
->srcu
= dma
->dstu
= dma
->resu
= 0;
962 dma
->cmdi
= dma
->srci
= dma
->dsti
= dma
->resi
= 0;
963 dma
->cmdk
= dma
->srck
= dma
->dstk
= dma
->resk
= 0;
967 * Initialize the PLL. We need to know the frequency of the reference clock
968 * to calculate the optimal multiplier. For PCI we assume 66MHz, since that
969 * allows us to operate without the risk of overclocking the chip. If it
970 * actually uses 33MHz, the chip will operate at half the speed, this can be
971 * overriden by specifying the frequency as module parameter (pci33).
973 * Unfortunately the PCI clock is not very suitable since the HIFN needs a
974 * stable clock and the PCI clock frequency may vary, so the default is the
975 * external clock. There is no way to find out its frequency, we default to
976 * 66MHz since according to Mike Ham of HiFn, almost every board in existence
977 * has an external crystal populated at 66MHz.
979 static void hifn_init_pll(struct hifn_device
*dev
)
981 unsigned int freq
, m
;
984 pllcfg
= HIFN_1_PLL
| HIFN_PLL_RESERVED_1
;
986 if (strncmp(hifn_pll_ref
, "ext", 3) == 0)
987 pllcfg
|= HIFN_PLL_REF_CLK_PLL
;
989 pllcfg
|= HIFN_PLL_REF_CLK_HBI
;
991 if (hifn_pll_ref
[3] != '\0')
992 freq
= simple_strtoul(hifn_pll_ref
+ 3, NULL
, 10);
995 printk(KERN_INFO
"hifn795x: assuming %uMHz clock speed, "
996 "override with hifn_pll_ref=%.3s<frequency>\n",
1000 m
= HIFN_PLL_FCK_MAX
/ freq
;
1002 pllcfg
|= (m
/ 2 - 1) << HIFN_PLL_ND_SHIFT
;
1004 pllcfg
|= HIFN_PLL_IS_1_8
;
1006 pllcfg
|= HIFN_PLL_IS_9_12
;
1008 /* Select clock source and enable clock bypass */
1009 hifn_write_1(dev
, HIFN_1_PLL
, pllcfg
|
1010 HIFN_PLL_PK_CLK_HBI
| HIFN_PLL_PE_CLK_HBI
| HIFN_PLL_BP
);
1012 /* Let the chip lock to the input clock */
1015 /* Disable clock bypass */
1016 hifn_write_1(dev
, HIFN_1_PLL
, pllcfg
|
1017 HIFN_PLL_PK_CLK_HBI
| HIFN_PLL_PE_CLK_HBI
);
1019 /* Switch the engines to the PLL */
1020 hifn_write_1(dev
, HIFN_1_PLL
, pllcfg
|
1021 HIFN_PLL_PK_CLK_PLL
| HIFN_PLL_PE_CLK_PLL
);
1024 * The Fpk_clk runs at half the total speed. Its frequency is needed to
1025 * calculate the minimum time between two reads of the rng. Since 33MHz
1026 * is actually 33.333... we overestimate the frequency here, resulting
1027 * in slightly larger intervals.
1029 dev
->pk_clk_freq
= 1000000 * (freq
+ 1) * m
/ 2;
1032 static void hifn_init_registers(struct hifn_device
*dev
)
1034 u32 dptr
= dev
->desc_dma
;
1036 /* Initialization magic... */
1037 hifn_write_0(dev
, HIFN_0_PUCTRL
, HIFN_PUCTRL_DMAENA
);
1038 hifn_write_0(dev
, HIFN_0_FIFOCNFG
, HIFN_FIFOCNFG_THRESHOLD
);
1039 hifn_write_0(dev
, HIFN_0_PUIER
, HIFN_PUIER_DSTOVER
);
1041 /* write all 4 ring address registers */
1042 hifn_write_1(dev
, HIFN_1_DMA_CRAR
, dptr
+
1043 offsetof(struct hifn_dma
, cmdr
[0]));
1044 hifn_write_1(dev
, HIFN_1_DMA_SRAR
, dptr
+
1045 offsetof(struct hifn_dma
, srcr
[0]));
1046 hifn_write_1(dev
, HIFN_1_DMA_DRAR
, dptr
+
1047 offsetof(struct hifn_dma
, dstr
[0]));
1048 hifn_write_1(dev
, HIFN_1_DMA_RRAR
, dptr
+
1049 offsetof(struct hifn_dma
, resr
[0]));
1053 hifn_write_1(dev
, HIFN_1_DMA_CSR
,
1054 HIFN_DMACSR_D_CTRL_DIS
| HIFN_DMACSR_R_CTRL_DIS
|
1055 HIFN_DMACSR_S_CTRL_DIS
| HIFN_DMACSR_C_CTRL_DIS
|
1056 HIFN_DMACSR_D_ABORT
| HIFN_DMACSR_D_DONE
| HIFN_DMACSR_D_LAST
|
1057 HIFN_DMACSR_D_WAIT
| HIFN_DMACSR_D_OVER
|
1058 HIFN_DMACSR_R_ABORT
| HIFN_DMACSR_R_DONE
| HIFN_DMACSR_R_LAST
|
1059 HIFN_DMACSR_R_WAIT
| HIFN_DMACSR_R_OVER
|
1060 HIFN_DMACSR_S_ABORT
| HIFN_DMACSR_S_DONE
| HIFN_DMACSR_S_LAST
|
1061 HIFN_DMACSR_S_WAIT
|
1062 HIFN_DMACSR_C_ABORT
| HIFN_DMACSR_C_DONE
| HIFN_DMACSR_C_LAST
|
1063 HIFN_DMACSR_C_WAIT
|
1064 HIFN_DMACSR_ENGINE
|
1065 HIFN_DMACSR_PUBDONE
);
1067 hifn_write_1(dev
, HIFN_1_DMA_CSR
,
1068 HIFN_DMACSR_C_CTRL_ENA
| HIFN_DMACSR_S_CTRL_ENA
|
1069 HIFN_DMACSR_D_CTRL_ENA
| HIFN_DMACSR_R_CTRL_ENA
|
1070 HIFN_DMACSR_D_ABORT
| HIFN_DMACSR_D_DONE
| HIFN_DMACSR_D_LAST
|
1071 HIFN_DMACSR_D_WAIT
| HIFN_DMACSR_D_OVER
|
1072 HIFN_DMACSR_R_ABORT
| HIFN_DMACSR_R_DONE
| HIFN_DMACSR_R_LAST
|
1073 HIFN_DMACSR_R_WAIT
| HIFN_DMACSR_R_OVER
|
1074 HIFN_DMACSR_S_ABORT
| HIFN_DMACSR_S_DONE
| HIFN_DMACSR_S_LAST
|
1075 HIFN_DMACSR_S_WAIT
|
1076 HIFN_DMACSR_C_ABORT
| HIFN_DMACSR_C_DONE
| HIFN_DMACSR_C_LAST
|
1077 HIFN_DMACSR_C_WAIT
|
1078 HIFN_DMACSR_ENGINE
|
1079 HIFN_DMACSR_PUBDONE
);
1081 hifn_read_1(dev
, HIFN_1_DMA_CSR
);
1083 dev
->dmareg
|= HIFN_DMAIER_R_DONE
| HIFN_DMAIER_C_ABORT
|
1084 HIFN_DMAIER_D_OVER
| HIFN_DMAIER_R_OVER
|
1085 HIFN_DMAIER_S_ABORT
| HIFN_DMAIER_D_ABORT
| HIFN_DMAIER_R_ABORT
|
1087 dev
->dmareg
&= ~HIFN_DMAIER_C_WAIT
;
1089 hifn_write_1(dev
, HIFN_1_DMA_IER
, dev
->dmareg
);
1090 hifn_read_1(dev
, HIFN_1_DMA_IER
);
1092 hifn_write_0(dev
, HIFN_0_PUCNFG
, HIFN_PUCNFG_ENCCNFG
|
1093 HIFN_PUCNFG_DRFR_128
| HIFN_PUCNFG_TCALLPHASES
|
1094 HIFN_PUCNFG_TCDRVTOTEM
| HIFN_PUCNFG_BUS32
|
1097 hifn_write_0(dev
, HIFN_0_PUCNFG
, 0x10342);
1101 hifn_write_0(dev
, HIFN_0_PUISR
, HIFN_PUISR_DSTOVER
);
1102 hifn_write_1(dev
, HIFN_1_DMA_CNFG
, HIFN_DMACNFG_MSTRESET
|
1103 HIFN_DMACNFG_DMARESET
| HIFN_DMACNFG_MODE
| HIFN_DMACNFG_LAST
|
1104 ((HIFN_POLL_FREQUENCY
<< 16 ) & HIFN_DMACNFG_POLLFREQ
) |
1105 ((HIFN_POLL_SCALAR
<< 8) & HIFN_DMACNFG_POLLINVAL
));
1108 static int hifn_setup_base_command(struct hifn_device
*dev
, u8
*buf
,
1109 unsigned dlen
, unsigned slen
, u16 mask
, u8 snum
)
1111 struct hifn_base_command
*base_cmd
;
1114 base_cmd
= (struct hifn_base_command
*)buf_pos
;
1115 base_cmd
->masks
= __cpu_to_le16(mask
);
1116 base_cmd
->total_source_count
=
1117 __cpu_to_le16(slen
& HIFN_BASE_CMD_LENMASK_LO
);
1118 base_cmd
->total_dest_count
=
1119 __cpu_to_le16(dlen
& HIFN_BASE_CMD_LENMASK_LO
);
1123 base_cmd
->session_num
= __cpu_to_le16(snum
|
1124 ((slen
<< HIFN_BASE_CMD_SRCLEN_S
) & HIFN_BASE_CMD_SRCLEN_M
) |
1125 ((dlen
<< HIFN_BASE_CMD_DSTLEN_S
) & HIFN_BASE_CMD_DSTLEN_M
));
1127 return sizeof(struct hifn_base_command
);
1130 static int hifn_setup_crypto_command(struct hifn_device
*dev
,
1131 u8
*buf
, unsigned dlen
, unsigned slen
,
1132 u8
*key
, int keylen
, u8
*iv
, int ivsize
, u16 mode
)
1134 struct hifn_dma
*dma
= (struct hifn_dma
*)dev
->desc_virt
;
1135 struct hifn_crypt_command
*cry_cmd
;
1139 cry_cmd
= (struct hifn_crypt_command
*)buf_pos
;
1141 cry_cmd
->source_count
= __cpu_to_le16(dlen
& 0xffff);
1143 cry_cmd
->masks
= __cpu_to_le16(mode
|
1144 ((dlen
<< HIFN_CRYPT_CMD_SRCLEN_S
) &
1145 HIFN_CRYPT_CMD_SRCLEN_M
));
1146 cry_cmd
->header_skip
= 0;
1147 cry_cmd
->reserved
= 0;
1149 buf_pos
+= sizeof(struct hifn_crypt_command
);
1152 if (dma
->cmdu
> 1) {
1153 dev
->dmareg
|= HIFN_DMAIER_C_WAIT
;
1154 hifn_write_1(dev
, HIFN_1_DMA_IER
, dev
->dmareg
);
1158 memcpy(buf_pos
, key
, keylen
);
1162 memcpy(buf_pos
, iv
, ivsize
);
1166 cmd_len
= buf_pos
- buf
;
1171 static int hifn_setup_src_desc(struct hifn_device
*dev
, struct page
*page
,
1172 unsigned int offset
, unsigned int size
)
1174 struct hifn_dma
*dma
= (struct hifn_dma
*)dev
->desc_virt
;
1178 addr
= pci_map_page(dev
->pdev
, page
, offset
, size
, PCI_DMA_TODEVICE
);
1182 dma
->srcr
[idx
].p
= __cpu_to_le32(addr
);
1183 dma
->srcr
[idx
].l
= __cpu_to_le32(size
| HIFN_D_VALID
|
1184 HIFN_D_MASKDONEIRQ
| HIFN_D_NOINVALID
| HIFN_D_LAST
);
1186 if (++idx
== HIFN_D_SRC_RSIZE
) {
1187 dma
->srcr
[idx
].l
= __cpu_to_le32(HIFN_D_VALID
|
1189 HIFN_D_MASKDONEIRQ
| HIFN_D_LAST
);
1196 if (!(dev
->flags
& HIFN_FLAG_SRC_BUSY
)) {
1197 hifn_write_1(dev
, HIFN_1_DMA_CSR
, HIFN_DMACSR_S_CTRL_ENA
);
1198 dev
->flags
|= HIFN_FLAG_SRC_BUSY
;
1204 static void hifn_setup_res_desc(struct hifn_device
*dev
)
1206 struct hifn_dma
*dma
= (struct hifn_dma
*)dev
->desc_virt
;
1208 dma
->resr
[dma
->resi
].l
= __cpu_to_le32(HIFN_USED_RESULT
|
1209 HIFN_D_VALID
| HIFN_D_LAST
);
1211 * dma->resr[dma->resi].l = __cpu_to_le32(HIFN_MAX_RESULT | HIFN_D_VALID |
1212 * HIFN_D_LAST | HIFN_D_NOINVALID);
1215 if (++dma
->resi
== HIFN_D_RES_RSIZE
) {
1216 dma
->resr
[HIFN_D_RES_RSIZE
].l
= __cpu_to_le32(HIFN_D_VALID
|
1217 HIFN_D_JUMP
| HIFN_D_MASKDONEIRQ
| HIFN_D_LAST
);
1223 if (!(dev
->flags
& HIFN_FLAG_RES_BUSY
)) {
1224 hifn_write_1(dev
, HIFN_1_DMA_CSR
, HIFN_DMACSR_R_CTRL_ENA
);
1225 dev
->flags
|= HIFN_FLAG_RES_BUSY
;
1229 static void hifn_setup_dst_desc(struct hifn_device
*dev
, struct page
*page
,
1230 unsigned offset
, unsigned size
)
1232 struct hifn_dma
*dma
= (struct hifn_dma
*)dev
->desc_virt
;
1236 addr
= pci_map_page(dev
->pdev
, page
, offset
, size
, PCI_DMA_FROMDEVICE
);
1239 dma
->dstr
[idx
].p
= __cpu_to_le32(addr
);
1240 dma
->dstr
[idx
].l
= __cpu_to_le32(size
| HIFN_D_VALID
|
1241 HIFN_D_MASKDONEIRQ
| HIFN_D_NOINVALID
| HIFN_D_LAST
);
1243 if (++idx
== HIFN_D_DST_RSIZE
) {
1244 dma
->dstr
[idx
].l
= __cpu_to_le32(HIFN_D_VALID
|
1245 HIFN_D_JUMP
| HIFN_D_MASKDONEIRQ
|
1246 HIFN_D_LAST
| HIFN_D_NOINVALID
);
1252 if (!(dev
->flags
& HIFN_FLAG_DST_BUSY
)) {
1253 hifn_write_1(dev
, HIFN_1_DMA_CSR
, HIFN_DMACSR_D_CTRL_ENA
);
1254 dev
->flags
|= HIFN_FLAG_DST_BUSY
;
1258 static int hifn_setup_dma(struct hifn_device
*dev
, struct page
*spage
, unsigned int soff
,
1259 struct page
*dpage
, unsigned int doff
, unsigned int nbytes
, void *priv
,
1260 struct hifn_context
*ctx
)
1262 struct hifn_dma
*dma
= (struct hifn_dma
*)dev
->desc_virt
;
1263 int cmd_len
, sa_idx
;
1267 dprintk("%s: spage: %p, soffset: %u, dpage: %p, doffset: %u, nbytes: %u, priv: %p, ctx: %p.\n",
1268 dev
->name
, spage
, soff
, dpage
, doff
, nbytes
, priv
, ctx
);
1272 hifn_setup_src_desc(dev
, spage
, soff
, nbytes
);
1274 buf_pos
= buf
= dma
->command_bufs
[dma
->cmdi
];
1278 case ACRYPTO_OP_DECRYPT
:
1279 mask
= HIFN_BASE_CMD_CRYPT
| HIFN_BASE_CMD_DECODE
;
1281 case ACRYPTO_OP_ENCRYPT
:
1282 mask
= HIFN_BASE_CMD_CRYPT
;
1284 case ACRYPTO_OP_HMAC
:
1285 mask
= HIFN_BASE_CMD_MAC
;
1291 buf_pos
+= hifn_setup_base_command(dev
, buf_pos
, nbytes
,
1292 nbytes
, mask
, dev
->snum
);
1294 if (ctx
->op
== ACRYPTO_OP_ENCRYPT
|| ctx
->op
== ACRYPTO_OP_DECRYPT
) {
1298 md
|= HIFN_CRYPT_CMD_NEW_KEY
;
1299 if (ctx
->iv
&& ctx
->mode
!= ACRYPTO_MODE_ECB
)
1300 md
|= HIFN_CRYPT_CMD_NEW_IV
;
1302 switch (ctx
->mode
) {
1303 case ACRYPTO_MODE_ECB
:
1304 md
|= HIFN_CRYPT_CMD_MODE_ECB
;
1306 case ACRYPTO_MODE_CBC
:
1307 md
|= HIFN_CRYPT_CMD_MODE_CBC
;
1309 case ACRYPTO_MODE_CFB
:
1310 md
|= HIFN_CRYPT_CMD_MODE_CFB
;
1312 case ACRYPTO_MODE_OFB
:
1313 md
|= HIFN_CRYPT_CMD_MODE_OFB
;
1319 switch (ctx
->type
) {
1320 case ACRYPTO_TYPE_AES_128
:
1321 if (ctx
->keysize
!= 16)
1323 md
|= HIFN_CRYPT_CMD_KSZ_128
|
1324 HIFN_CRYPT_CMD_ALG_AES
;
1326 case ACRYPTO_TYPE_AES_192
:
1327 if (ctx
->keysize
!= 24)
1329 md
|= HIFN_CRYPT_CMD_KSZ_192
|
1330 HIFN_CRYPT_CMD_ALG_AES
;
1332 case ACRYPTO_TYPE_AES_256
:
1333 if (ctx
->keysize
!= 32)
1335 md
|= HIFN_CRYPT_CMD_KSZ_256
|
1336 HIFN_CRYPT_CMD_ALG_AES
;
1338 case ACRYPTO_TYPE_3DES
:
1339 if (ctx
->keysize
!= 24)
1341 md
|= HIFN_CRYPT_CMD_ALG_3DES
;
1343 case ACRYPTO_TYPE_DES
:
1344 if (ctx
->keysize
!= 8)
1346 md
|= HIFN_CRYPT_CMD_ALG_DES
;
1352 buf_pos
+= hifn_setup_crypto_command(dev
, buf_pos
,
1353 nbytes
, nbytes
, ctx
->key
, ctx
->keysize
,
1354 ctx
->iv
, ctx
->ivsize
, md
);
1357 dev
->sa
[sa_idx
] = priv
;
1359 cmd_len
= buf_pos
- buf
;
1360 dma
->cmdr
[dma
->cmdi
].l
= __cpu_to_le32(cmd_len
| HIFN_D_VALID
|
1361 HIFN_D_LAST
| HIFN_D_MASKDONEIRQ
);
1363 if (++dma
->cmdi
== HIFN_D_CMD_RSIZE
) {
1364 dma
->cmdr
[dma
->cmdi
].l
= __cpu_to_le32(HIFN_MAX_COMMAND
|
1365 HIFN_D_VALID
| HIFN_D_LAST
|
1366 HIFN_D_MASKDONEIRQ
| HIFN_D_JUMP
);
1369 dma
->cmdr
[dma
->cmdi
-1].l
|= __cpu_to_le32(HIFN_D_VALID
);
1371 if (!(dev
->flags
& HIFN_FLAG_CMD_BUSY
)) {
1372 hifn_write_1(dev
, HIFN_1_DMA_CSR
, HIFN_DMACSR_C_CTRL_ENA
);
1373 dev
->flags
|= HIFN_FLAG_CMD_BUSY
;
1376 hifn_setup_dst_desc(dev
, dpage
, doff
, nbytes
);
1377 hifn_setup_res_desc(dev
);
1385 static int ablkcipher_walk_init(struct ablkcipher_walk
*w
,
1386 int num
, gfp_t gfp_flags
)
1390 num
= min(ASYNC_SCATTERLIST_CACHE
, num
);
1391 sg_init_table(w
->cache
, num
);
1394 for (i
=0; i
<num
; ++i
) {
1395 struct page
*page
= alloc_page(gfp_flags
);
1396 struct scatterlist
*s
;
1403 sg_set_page(s
, page
, PAGE_SIZE
, 0);
1410 static void ablkcipher_walk_exit(struct ablkcipher_walk
*w
)
1414 for (i
=0; i
<w
->num
; ++i
) {
1415 struct scatterlist
*s
= &w
->cache
[i
];
1417 __free_page(sg_page(s
));
1425 static int ablkcipher_add(void *daddr
, unsigned int *drestp
, struct scatterlist
*src
,
1426 unsigned int size
, unsigned int *nbytesp
)
1428 unsigned int copy
, drest
= *drestp
, nbytes
= *nbytesp
;
1432 if (drest
< size
|| size
> nbytes
)
1436 copy
= min(drest
, src
->length
);
1438 saddr
= kmap_atomic(sg_page(src
), KM_SOFTIRQ1
);
1439 memcpy(daddr
, saddr
+ src
->offset
, copy
);
1440 kunmap_atomic(saddr
, KM_SOFTIRQ1
);
1447 dprintk("%s: copy: %u, size: %u, drest: %u, nbytes: %u.\n",
1448 __func__
, copy
, size
, drest
, nbytes
);
1460 static int ablkcipher_walk(struct ablkcipher_request
*req
,
1461 struct ablkcipher_walk
*w
)
1463 struct scatterlist
*src
, *dst
, *t
;
1465 unsigned int nbytes
= req
->nbytes
, offset
, copy
, diff
;
1471 if (idx
>= w
->num
&& (w
->flags
& ASYNC_FLAGS_MISALIGNED
))
1474 src
= &req
->src
[idx
];
1475 dst
= &req
->dst
[idx
];
1477 dprintk("\n%s: slen: %u, dlen: %u, soff: %u, doff: %u, offset: %u, "
1479 __func__
, src
->length
, dst
->length
, src
->offset
,
1480 dst
->offset
, offset
, nbytes
);
1482 if (!IS_ALIGNED(dst
->offset
, HIFN_D_DST_DALIGN
) ||
1483 !IS_ALIGNED(dst
->length
, HIFN_D_DST_DALIGN
) ||
1485 unsigned slen
= src
->length
- offset
;
1486 unsigned dlen
= PAGE_SIZE
;
1490 daddr
= kmap_atomic(sg_page(t
), KM_SOFTIRQ0
);
1491 err
= ablkcipher_add(daddr
, &dlen
, src
, slen
, &nbytes
);
1497 copy
= slen
& ~(HIFN_D_DST_DALIGN
- 1);
1498 diff
= slen
& (HIFN_D_DST_DALIGN
- 1);
1500 if (dlen
< nbytes
) {
1502 * Destination page does not have enough space
1503 * to put there additional blocksized chunk,
1504 * so we mark that page as containing only
1505 * blocksize aligned chunks:
1506 * t->length = (slen & ~(HIFN_D_DST_DALIGN - 1));
1507 * and increase number of bytes to be processed
1514 * Temporary of course...
1515 * Kick author if you will catch this one.
1517 printk(KERN_ERR
"%s: dlen: %u, nbytes: %u,"
1518 "slen: %u, offset: %u.\n",
1519 __func__
, dlen
, nbytes
, slen
, offset
);
1520 printk(KERN_ERR
"%s: please contact author to fix this "
1521 "issue, generally you should not catch "
1522 "this path under any condition but who "
1523 "knows how did you use crypto code.\n"
1524 "Thank you.\n", __func__
);
1527 copy
+= diff
+ nbytes
;
1529 src
= &req
->src
[idx
];
1531 err
= ablkcipher_add(daddr
+ slen
, &dlen
, src
, nbytes
, &nbytes
);
1541 kunmap_atomic(daddr
, KM_SOFTIRQ0
);
1543 nbytes
-= src
->length
;
1553 kunmap_atomic(daddr
, KM_SOFTIRQ0
);
1557 static int hifn_setup_session(struct ablkcipher_request
*req
)
1559 struct hifn_context
*ctx
= crypto_tfm_ctx(req
->base
.tfm
);
1560 struct hifn_device
*dev
= ctx
->dev
;
1561 struct page
*spage
, *dpage
;
1562 unsigned long soff
, doff
, flags
;
1563 unsigned int nbytes
= req
->nbytes
, idx
= 0, len
;
1564 int err
= -EINVAL
, sg_num
;
1565 struct scatterlist
*src
, *dst
, *t
;
1567 if (ctx
->iv
&& !ctx
->ivsize
&& ctx
->mode
!= ACRYPTO_MODE_ECB
)
1570 ctx
->walk
.flags
= 0;
1573 dst
= &req
->dst
[idx
];
1575 if (!IS_ALIGNED(dst
->offset
, HIFN_D_DST_DALIGN
) ||
1576 !IS_ALIGNED(dst
->length
, HIFN_D_DST_DALIGN
))
1577 ctx
->walk
.flags
|= ASYNC_FLAGS_MISALIGNED
;
1579 nbytes
-= dst
->length
;
1583 if (ctx
->walk
.flags
& ASYNC_FLAGS_MISALIGNED
) {
1584 err
= ablkcipher_walk_init(&ctx
->walk
, idx
, GFP_ATOMIC
);
1589 nbytes
= req
->nbytes
;
1592 sg_num
= ablkcipher_walk(req
, &ctx
->walk
);
1597 atomic_set(&ctx
->sg_num
, sg_num
);
1599 spin_lock_irqsave(&dev
->lock
, flags
);
1600 if (dev
->started
+ sg_num
> HIFN_QUEUE_LENGTH
) {
1606 dev
->started
+= sg_num
;
1609 src
= &req
->src
[idx
];
1610 dst
= &req
->dst
[idx
];
1611 t
= &ctx
->walk
.cache
[idx
];
1614 spage
= dpage
= sg_page(t
);
1618 spage
= sg_page(src
);
1621 dpage
= sg_page(dst
);
1629 err
= hifn_setup_dma(dev
, spage
, soff
, dpage
, doff
, nbytes
,
1637 dev
->active
= HIFN_DEFAULT_ACTIVE_NUM
;
1638 spin_unlock_irqrestore(&dev
->lock
, flags
);
1643 spin_unlock_irqrestore(&dev
->lock
, flags
);
1646 dprintk("%s: iv: %p [%d], key: %p [%d], mode: %u, op: %u, "
1647 "type: %u, err: %d.\n",
1648 dev
->name
, ctx
->iv
, ctx
->ivsize
,
1649 ctx
->key
, ctx
->keysize
,
1650 ctx
->mode
, ctx
->op
, ctx
->type
, err
);
1655 static int hifn_test(struct hifn_device
*dev
, int encdec
, u8 snum
)
1659 struct hifn_context ctx
;
1660 u8 fips_aes_ecb_from_zero
[16] = {
1661 0x66, 0xE9, 0x4B, 0xD4,
1662 0xEF, 0x8A, 0x2C, 0x3B,
1663 0x88, 0x4C, 0xFA, 0x59,
1664 0xCA, 0x34, 0x2B, 0x2E};
1666 memset(src
, 0, sizeof(src
));
1667 memset(ctx
.key
, 0, sizeof(ctx
.key
));
1673 ctx
.op
= (encdec
)?ACRYPTO_OP_ENCRYPT
:ACRYPTO_OP_DECRYPT
;
1674 ctx
.mode
= ACRYPTO_MODE_ECB
;
1675 ctx
.type
= ACRYPTO_TYPE_AES_128
;
1676 atomic_set(&ctx
.sg_num
, 1);
1678 err
= hifn_setup_dma(dev
,
1679 virt_to_page(src
), offset_in_page(src
),
1680 virt_to_page(src
), offset_in_page(src
),
1681 sizeof(src
), NULL
, &ctx
);
1687 dprintk("%s: decoded: ", dev
->name
);
1688 for (n
=0; n
<sizeof(src
); ++n
)
1689 dprintk("%02x ", src
[n
]);
1691 dprintk("%s: FIPS : ", dev
->name
);
1692 for (n
=0; n
<sizeof(fips_aes_ecb_from_zero
); ++n
)
1693 dprintk("%02x ", fips_aes_ecb_from_zero
[n
]);
1696 if (!memcmp(src
, fips_aes_ecb_from_zero
, sizeof(fips_aes_ecb_from_zero
))) {
1697 printk(KERN_INFO
"%s: AES 128 ECB test has been successfully "
1698 "passed.\n", dev
->name
);
1703 printk(KERN_INFO
"%s: AES 128 ECB test has been failed.\n", dev
->name
);
1707 static int hifn_start_device(struct hifn_device
*dev
)
1711 hifn_reset_dma(dev
, 1);
1713 err
= hifn_enable_crypto(dev
);
1717 hifn_reset_puc(dev
);
1721 hifn_init_registers(dev
);
1723 hifn_init_pubrng(dev
);
1728 static int ablkcipher_get(void *saddr
, unsigned int *srestp
, unsigned int offset
,
1729 struct scatterlist
*dst
, unsigned int size
, unsigned int *nbytesp
)
1731 unsigned int srest
= *srestp
, nbytes
= *nbytesp
, copy
;
1735 if (srest
< size
|| size
> nbytes
)
1740 copy
= min(dst
->length
, srest
);
1742 daddr
= kmap_atomic(sg_page(dst
), KM_IRQ0
);
1743 memcpy(daddr
+ dst
->offset
+ offset
, saddr
, copy
);
1744 kunmap_atomic(daddr
, KM_IRQ0
);
1752 dprintk("%s: copy: %u, size: %u, srest: %u, nbytes: %u.\n",
1753 __func__
, copy
, size
, srest
, nbytes
);
1765 static void hifn_process_ready(struct ablkcipher_request
*req
, int error
)
1767 struct hifn_context
*ctx
= crypto_tfm_ctx(req
->base
.tfm
);
1768 struct hifn_device
*dev
;
1770 dprintk("%s: req: %p, ctx: %p.\n", __func__
, req
, ctx
);
1773 dprintk("%s: req: %p, started: %d, sg_num: %d.\n",
1774 __func__
, req
, dev
->started
, atomic_read(&ctx
->sg_num
));
1776 if (--dev
->started
< 0)
1779 if (atomic_dec_and_test(&ctx
->sg_num
)) {
1780 unsigned int nbytes
= req
->nbytes
;
1782 struct scatterlist
*dst
, *t
;
1785 if (ctx
->walk
.flags
& ASYNC_FLAGS_MISALIGNED
) {
1787 t
= &ctx
->walk
.cache
[idx
];
1788 dst
= &req
->dst
[idx
];
1790 dprintk("\n%s: sg_page(t): %p, t->length: %u, "
1791 "sg_page(dst): %p, dst->length: %u, "
1793 __func__
, sg_page(t
), t
->length
,
1794 sg_page(dst
), dst
->length
, nbytes
);
1797 nbytes
-= dst
->length
;
1802 saddr
= kmap_atomic(sg_page(t
), KM_IRQ1
);
1804 err
= ablkcipher_get(saddr
, &t
->length
, t
->offset
,
1805 dst
, nbytes
, &nbytes
);
1807 kunmap_atomic(saddr
, KM_IRQ1
);
1812 kunmap_atomic(saddr
, KM_IRQ1
);
1815 ablkcipher_walk_exit(&ctx
->walk
);
1818 req
->base
.complete(&req
->base
, error
);
1822 static void hifn_check_for_completion(struct hifn_device
*dev
, int error
)
1825 struct hifn_dma
*dma
= (struct hifn_dma
*)dev
->desc_virt
;
1827 for (i
=0; i
<HIFN_D_RES_RSIZE
; ++i
) {
1828 struct hifn_desc
*d
= &dma
->resr
[i
];
1830 if (!(d
->l
& __cpu_to_le32(HIFN_D_VALID
)) && dev
->sa
[i
]) {
1833 hifn_process_ready(dev
->sa
[i
], error
);
1837 if (d
->l
& __cpu_to_le32(HIFN_D_DESTOVER
| HIFN_D_OVER
))
1838 if (printk_ratelimit())
1839 printk("%s: overflow detected [d: %u, o: %u] "
1840 "at %d resr: l: %08x, p: %08x.\n",
1842 !!(d
->l
& __cpu_to_le32(HIFN_D_DESTOVER
)),
1843 !!(d
->l
& __cpu_to_le32(HIFN_D_OVER
)),
1848 static void hifn_clear_rings(struct hifn_device
*dev
)
1850 struct hifn_dma
*dma
= (struct hifn_dma
*)dev
->desc_virt
;
1853 dprintk("%s: ring cleanup 1: i: %d.%d.%d.%d, u: %d.%d.%d.%d, "
1854 "k: %d.%d.%d.%d.\n",
1856 dma
->cmdi
, dma
->srci
, dma
->dsti
, dma
->resi
,
1857 dma
->cmdu
, dma
->srcu
, dma
->dstu
, dma
->resu
,
1858 dma
->cmdk
, dma
->srck
, dma
->dstk
, dma
->resk
);
1860 i
= dma
->resk
; u
= dma
->resu
;
1862 if (dma
->resr
[i
].l
& __cpu_to_le32(HIFN_D_VALID
))
1865 if (i
!= HIFN_D_RES_RSIZE
)
1868 if (++i
== (HIFN_D_RES_RSIZE
+ 1))
1871 dma
->resk
= i
; dma
->resu
= u
;
1873 i
= dma
->srck
; u
= dma
->srcu
;
1875 if (i
== HIFN_D_SRC_RSIZE
)
1877 if (dma
->srcr
[i
].l
& __cpu_to_le32(HIFN_D_VALID
))
1881 dma
->srck
= i
; dma
->srcu
= u
;
1883 i
= dma
->cmdk
; u
= dma
->cmdu
;
1885 if (dma
->cmdr
[i
].l
& __cpu_to_le32(HIFN_D_VALID
))
1887 if (i
!= HIFN_D_CMD_RSIZE
)
1889 if (++i
== (HIFN_D_CMD_RSIZE
+ 1))
1892 dma
->cmdk
= i
; dma
->cmdu
= u
;
1894 i
= dma
->dstk
; u
= dma
->dstu
;
1896 if (i
== HIFN_D_DST_RSIZE
)
1898 if (dma
->dstr
[i
].l
& __cpu_to_le32(HIFN_D_VALID
))
1902 dma
->dstk
= i
; dma
->dstu
= u
;
1904 dprintk("%s: ring cleanup 2: i: %d.%d.%d.%d, u: %d.%d.%d.%d, "
1905 "k: %d.%d.%d.%d.\n",
1907 dma
->cmdi
, dma
->srci
, dma
->dsti
, dma
->resi
,
1908 dma
->cmdu
, dma
->srcu
, dma
->dstu
, dma
->resu
,
1909 dma
->cmdk
, dma
->srck
, dma
->dstk
, dma
->resk
);
1912 static void hifn_work(struct work_struct
*work
)
1914 struct delayed_work
*dw
= container_of(work
, struct delayed_work
, work
);
1915 struct hifn_device
*dev
= container_of(dw
, struct hifn_device
, work
);
1916 unsigned long flags
;
1920 spin_lock_irqsave(&dev
->lock
, flags
);
1921 if (dev
->active
== 0) {
1922 struct hifn_dma
*dma
= (struct hifn_dma
*)dev
->desc_virt
;
1924 if (dma
->cmdu
== 0 && (dev
->flags
& HIFN_FLAG_CMD_BUSY
)) {
1925 dev
->flags
&= ~HIFN_FLAG_CMD_BUSY
;
1926 r
|= HIFN_DMACSR_C_CTRL_DIS
;
1928 if (dma
->srcu
== 0 && (dev
->flags
& HIFN_FLAG_SRC_BUSY
)) {
1929 dev
->flags
&= ~HIFN_FLAG_SRC_BUSY
;
1930 r
|= HIFN_DMACSR_S_CTRL_DIS
;
1932 if (dma
->dstu
== 0 && (dev
->flags
& HIFN_FLAG_DST_BUSY
)) {
1933 dev
->flags
&= ~HIFN_FLAG_DST_BUSY
;
1934 r
|= HIFN_DMACSR_D_CTRL_DIS
;
1936 if (dma
->resu
== 0 && (dev
->flags
& HIFN_FLAG_RES_BUSY
)) {
1937 dev
->flags
&= ~HIFN_FLAG_RES_BUSY
;
1938 r
|= HIFN_DMACSR_R_CTRL_DIS
;
1941 hifn_write_1(dev
, HIFN_1_DMA_CSR
, r
);
1945 if (dev
->prev_success
== dev
->success
&& dev
->started
)
1947 dev
->prev_success
= dev
->success
;
1948 spin_unlock_irqrestore(&dev
->lock
, flags
);
1951 dprintk("%s: r: %08x, active: %d, started: %d, "
1952 "success: %lu: reset: %d.\n",
1953 dev
->name
, r
, dev
->active
, dev
->started
,
1954 dev
->success
, reset
);
1956 if (++dev
->reset
>= 5) {
1957 dprintk("%s: really hard reset.\n", dev
->name
);
1958 hifn_reset_dma(dev
, 1);
1959 hifn_stop_device(dev
);
1960 hifn_start_device(dev
);
1964 spin_lock_irqsave(&dev
->lock
, flags
);
1965 hifn_check_for_completion(dev
, -EBUSY
);
1966 hifn_clear_rings(dev
);
1968 spin_unlock_irqrestore(&dev
->lock
, flags
);
1971 schedule_delayed_work(&dev
->work
, HZ
);
1974 static irqreturn_t
hifn_interrupt(int irq
, void *data
)
1976 struct hifn_device
*dev
= (struct hifn_device
*)data
;
1977 struct hifn_dma
*dma
= (struct hifn_dma
*)dev
->desc_virt
;
1978 u32 dmacsr
, restart
;
1980 dmacsr
= hifn_read_1(dev
, HIFN_1_DMA_CSR
);
1982 dprintk("%s: 1 dmacsr: %08x, dmareg: %08x, res: %08x [%d], "
1983 "i: %d.%d.%d.%d, u: %d.%d.%d.%d.\n",
1984 dev
->name
, dmacsr
, dev
->dmareg
, dmacsr
& dev
->dmareg
, dma
->cmdi
,
1985 dma
->cmdu
, dma
->srcu
, dma
->dstu
, dma
->resu
,
1986 dma
->cmdi
, dma
->srci
, dma
->dsti
, dma
->resi
);
1988 if ((dmacsr
& dev
->dmareg
) == 0)
1991 hifn_write_1(dev
, HIFN_1_DMA_CSR
, dmacsr
& dev
->dmareg
);
1993 if (dmacsr
& HIFN_DMACSR_ENGINE
)
1994 hifn_write_0(dev
, HIFN_0_PUISR
, hifn_read_0(dev
, HIFN_0_PUISR
));
1995 if (dmacsr
& HIFN_DMACSR_PUBDONE
)
1996 hifn_write_1(dev
, HIFN_1_PUB_STATUS
,
1997 hifn_read_1(dev
, HIFN_1_PUB_STATUS
) | HIFN_PUBSTS_DONE
);
1999 restart
= dmacsr
& (HIFN_DMACSR_R_OVER
| HIFN_DMACSR_D_OVER
);
2001 u32 puisr
= hifn_read_0(dev
, HIFN_0_PUISR
);
2003 if (printk_ratelimit())
2004 printk("%s: overflow: r: %d, d: %d, puisr: %08x, d: %u.\n",
2005 dev
->name
, !!(dmacsr
& HIFN_DMACSR_R_OVER
),
2006 !!(dmacsr
& HIFN_DMACSR_D_OVER
),
2007 puisr
, !!(puisr
& HIFN_PUISR_DSTOVER
));
2008 if (!!(puisr
& HIFN_PUISR_DSTOVER
))
2009 hifn_write_0(dev
, HIFN_0_PUISR
, HIFN_PUISR_DSTOVER
);
2010 hifn_write_1(dev
, HIFN_1_DMA_CSR
, dmacsr
& (HIFN_DMACSR_R_OVER
|
2011 HIFN_DMACSR_D_OVER
));
2014 restart
= dmacsr
& (HIFN_DMACSR_C_ABORT
| HIFN_DMACSR_S_ABORT
|
2015 HIFN_DMACSR_D_ABORT
| HIFN_DMACSR_R_ABORT
);
2017 if (printk_ratelimit())
2018 printk("%s: abort: c: %d, s: %d, d: %d, r: %d.\n",
2019 dev
->name
, !!(dmacsr
& HIFN_DMACSR_C_ABORT
),
2020 !!(dmacsr
& HIFN_DMACSR_S_ABORT
),
2021 !!(dmacsr
& HIFN_DMACSR_D_ABORT
),
2022 !!(dmacsr
& HIFN_DMACSR_R_ABORT
));
2023 hifn_reset_dma(dev
, 1);
2025 hifn_init_registers(dev
);
2028 if ((dmacsr
& HIFN_DMACSR_C_WAIT
) && (dma
->cmdu
== 0)) {
2029 dprintk("%s: wait on command.\n", dev
->name
);
2030 dev
->dmareg
&= ~(HIFN_DMAIER_C_WAIT
);
2031 hifn_write_1(dev
, HIFN_1_DMA_IER
, dev
->dmareg
);
2034 tasklet_schedule(&dev
->tasklet
);
2035 hifn_clear_rings(dev
);
2040 static void hifn_flush(struct hifn_device
*dev
)
2042 unsigned long flags
;
2043 struct crypto_async_request
*async_req
;
2044 struct hifn_context
*ctx
;
2045 struct ablkcipher_request
*req
;
2046 struct hifn_dma
*dma
= (struct hifn_dma
*)dev
->desc_virt
;
2049 spin_lock_irqsave(&dev
->lock
, flags
);
2050 for (i
=0; i
<HIFN_D_RES_RSIZE
; ++i
) {
2051 struct hifn_desc
*d
= &dma
->resr
[i
];
2054 hifn_process_ready(dev
->sa
[i
],
2055 (d
->l
& __cpu_to_le32(HIFN_D_VALID
))?-ENODEV
:0);
2059 while ((async_req
= crypto_dequeue_request(&dev
->queue
))) {
2060 ctx
= crypto_tfm_ctx(async_req
->tfm
);
2061 req
= container_of(async_req
, struct ablkcipher_request
, base
);
2063 hifn_process_ready(req
, -ENODEV
);
2065 spin_unlock_irqrestore(&dev
->lock
, flags
);
2068 static int hifn_setkey(struct crypto_ablkcipher
*cipher
, const u8
*key
,
2071 struct crypto_tfm
*tfm
= crypto_ablkcipher_tfm(cipher
);
2072 struct hifn_context
*ctx
= crypto_tfm_ctx(tfm
);
2073 struct hifn_device
*dev
= ctx
->dev
;
2075 if (len
> HIFN_MAX_CRYPT_KEY_LENGTH
) {
2076 crypto_ablkcipher_set_flags(cipher
, CRYPTO_TFM_RES_BAD_KEY_LEN
);
2080 if (len
== HIFN_DES_KEY_LENGTH
) {
2081 u32 tmp
[DES_EXPKEY_WORDS
];
2082 int ret
= des_ekey(tmp
, key
);
2084 if (unlikely(ret
== 0) && (tfm
->crt_flags
& CRYPTO_TFM_REQ_WEAK_KEY
)) {
2085 tfm
->crt_flags
|= CRYPTO_TFM_RES_WEAK_KEY
;
2090 dev
->flags
&= ~HIFN_FLAG_OLD_KEY
;
2092 memcpy(ctx
->key
, key
, len
);
2098 static int hifn_handle_req(struct ablkcipher_request
*req
)
2100 struct hifn_context
*ctx
= crypto_tfm_ctx(req
->base
.tfm
);
2101 struct hifn_device
*dev
= ctx
->dev
;
2104 if (dev
->started
+ DIV_ROUND_UP(req
->nbytes
, PAGE_SIZE
) <= HIFN_QUEUE_LENGTH
)
2105 err
= hifn_setup_session(req
);
2107 if (err
== -EAGAIN
) {
2108 unsigned long flags
;
2110 spin_lock_irqsave(&dev
->lock
, flags
);
2111 err
= ablkcipher_enqueue_request(&dev
->queue
, req
);
2112 spin_unlock_irqrestore(&dev
->lock
, flags
);
2118 static int hifn_setup_crypto_req(struct ablkcipher_request
*req
, u8 op
,
2121 struct hifn_context
*ctx
= crypto_tfm_ctx(req
->base
.tfm
);
2124 ivsize
= crypto_ablkcipher_ivsize(crypto_ablkcipher_reqtfm(req
));
2126 if (req
->info
&& mode
!= ACRYPTO_MODE_ECB
) {
2127 if (type
== ACRYPTO_TYPE_AES_128
)
2128 ivsize
= HIFN_AES_IV_LENGTH
;
2129 else if (type
== ACRYPTO_TYPE_DES
)
2130 ivsize
= HIFN_DES_KEY_LENGTH
;
2131 else if (type
== ACRYPTO_TYPE_3DES
)
2132 ivsize
= HIFN_3DES_KEY_LENGTH
;
2135 if (ctx
->keysize
!= 16 && type
== ACRYPTO_TYPE_AES_128
) {
2136 if (ctx
->keysize
== 24)
2137 type
= ACRYPTO_TYPE_AES_192
;
2138 else if (ctx
->keysize
== 32)
2139 type
= ACRYPTO_TYPE_AES_256
;
2145 ctx
->iv
= req
->info
;
2146 ctx
->ivsize
= ivsize
;
2149 * HEAVY TODO: needs to kick Herbert XU to write documentation.
2150 * HEAVY TODO: needs to kick Herbert XU to write documentation.
2151 * HEAVY TODO: needs to kick Herbert XU to write documentation.
2154 return hifn_handle_req(req
);
2157 static int hifn_process_queue(struct hifn_device
*dev
)
2159 struct crypto_async_request
*async_req
;
2160 struct hifn_context
*ctx
;
2161 struct ablkcipher_request
*req
;
2162 unsigned long flags
;
2165 while (dev
->started
< HIFN_QUEUE_LENGTH
) {
2166 spin_lock_irqsave(&dev
->lock
, flags
);
2167 async_req
= crypto_dequeue_request(&dev
->queue
);
2168 spin_unlock_irqrestore(&dev
->lock
, flags
);
2173 ctx
= crypto_tfm_ctx(async_req
->tfm
);
2174 req
= container_of(async_req
, struct ablkcipher_request
, base
);
2176 err
= hifn_handle_req(req
);
2184 static int hifn_setup_crypto(struct ablkcipher_request
*req
, u8 op
,
2188 struct hifn_context
*ctx
= crypto_tfm_ctx(req
->base
.tfm
);
2189 struct hifn_device
*dev
= ctx
->dev
;
2191 err
= hifn_setup_crypto_req(req
, op
, type
, mode
);
2195 if (dev
->started
< HIFN_QUEUE_LENGTH
&& dev
->queue
.qlen
)
2196 hifn_process_queue(dev
);
2198 return -EINPROGRESS
;
2202 * AES ecryption functions.
2204 static inline int hifn_encrypt_aes_ecb(struct ablkcipher_request
*req
)
2206 return hifn_setup_crypto(req
, ACRYPTO_OP_ENCRYPT
,
2207 ACRYPTO_TYPE_AES_128
, ACRYPTO_MODE_ECB
);
2209 static inline int hifn_encrypt_aes_cbc(struct ablkcipher_request
*req
)
2211 return hifn_setup_crypto(req
, ACRYPTO_OP_ENCRYPT
,
2212 ACRYPTO_TYPE_AES_128
, ACRYPTO_MODE_CBC
);
2214 static inline int hifn_encrypt_aes_cfb(struct ablkcipher_request
*req
)
2216 return hifn_setup_crypto(req
, ACRYPTO_OP_ENCRYPT
,
2217 ACRYPTO_TYPE_AES_128
, ACRYPTO_MODE_CFB
);
2219 static inline int hifn_encrypt_aes_ofb(struct ablkcipher_request
*req
)
2221 return hifn_setup_crypto(req
, ACRYPTO_OP_ENCRYPT
,
2222 ACRYPTO_TYPE_AES_128
, ACRYPTO_MODE_OFB
);
2226 * AES decryption functions.
2228 static inline int hifn_decrypt_aes_ecb(struct ablkcipher_request
*req
)
2230 return hifn_setup_crypto(req
, ACRYPTO_OP_DECRYPT
,
2231 ACRYPTO_TYPE_AES_128
, ACRYPTO_MODE_ECB
);
2233 static inline int hifn_decrypt_aes_cbc(struct ablkcipher_request
*req
)
2235 return hifn_setup_crypto(req
, ACRYPTO_OP_DECRYPT
,
2236 ACRYPTO_TYPE_AES_128
, ACRYPTO_MODE_CBC
);
2238 static inline int hifn_decrypt_aes_cfb(struct ablkcipher_request
*req
)
2240 return hifn_setup_crypto(req
, ACRYPTO_OP_DECRYPT
,
2241 ACRYPTO_TYPE_AES_128
, ACRYPTO_MODE_CFB
);
2243 static inline int hifn_decrypt_aes_ofb(struct ablkcipher_request
*req
)
2245 return hifn_setup_crypto(req
, ACRYPTO_OP_DECRYPT
,
2246 ACRYPTO_TYPE_AES_128
, ACRYPTO_MODE_OFB
);
2250 * DES ecryption functions.
2252 static inline int hifn_encrypt_des_ecb(struct ablkcipher_request
*req
)
2254 return hifn_setup_crypto(req
, ACRYPTO_OP_ENCRYPT
,
2255 ACRYPTO_TYPE_DES
, ACRYPTO_MODE_ECB
);
2257 static inline int hifn_encrypt_des_cbc(struct ablkcipher_request
*req
)
2259 return hifn_setup_crypto(req
, ACRYPTO_OP_ENCRYPT
,
2260 ACRYPTO_TYPE_DES
, ACRYPTO_MODE_CBC
);
2262 static inline int hifn_encrypt_des_cfb(struct ablkcipher_request
*req
)
2264 return hifn_setup_crypto(req
, ACRYPTO_OP_ENCRYPT
,
2265 ACRYPTO_TYPE_DES
, ACRYPTO_MODE_CFB
);
2267 static inline int hifn_encrypt_des_ofb(struct ablkcipher_request
*req
)
2269 return hifn_setup_crypto(req
, ACRYPTO_OP_ENCRYPT
,
2270 ACRYPTO_TYPE_DES
, ACRYPTO_MODE_OFB
);
2274 * DES decryption functions.
2276 static inline int hifn_decrypt_des_ecb(struct ablkcipher_request
*req
)
2278 return hifn_setup_crypto(req
, ACRYPTO_OP_DECRYPT
,
2279 ACRYPTO_TYPE_DES
, ACRYPTO_MODE_ECB
);
2281 static inline int hifn_decrypt_des_cbc(struct ablkcipher_request
*req
)
2283 return hifn_setup_crypto(req
, ACRYPTO_OP_DECRYPT
,
2284 ACRYPTO_TYPE_DES
, ACRYPTO_MODE_CBC
);
2286 static inline int hifn_decrypt_des_cfb(struct ablkcipher_request
*req
)
2288 return hifn_setup_crypto(req
, ACRYPTO_OP_DECRYPT
,
2289 ACRYPTO_TYPE_DES
, ACRYPTO_MODE_CFB
);
2291 static inline int hifn_decrypt_des_ofb(struct ablkcipher_request
*req
)
2293 return hifn_setup_crypto(req
, ACRYPTO_OP_DECRYPT
,
2294 ACRYPTO_TYPE_DES
, ACRYPTO_MODE_OFB
);
2298 * 3DES ecryption functions.
2300 static inline int hifn_encrypt_3des_ecb(struct ablkcipher_request
*req
)
2302 return hifn_setup_crypto(req
, ACRYPTO_OP_ENCRYPT
,
2303 ACRYPTO_TYPE_3DES
, ACRYPTO_MODE_ECB
);
2305 static inline int hifn_encrypt_3des_cbc(struct ablkcipher_request
*req
)
2307 return hifn_setup_crypto(req
, ACRYPTO_OP_ENCRYPT
,
2308 ACRYPTO_TYPE_3DES
, ACRYPTO_MODE_CBC
);
2310 static inline int hifn_encrypt_3des_cfb(struct ablkcipher_request
*req
)
2312 return hifn_setup_crypto(req
, ACRYPTO_OP_ENCRYPT
,
2313 ACRYPTO_TYPE_3DES
, ACRYPTO_MODE_CFB
);
2315 static inline int hifn_encrypt_3des_ofb(struct ablkcipher_request
*req
)
2317 return hifn_setup_crypto(req
, ACRYPTO_OP_ENCRYPT
,
2318 ACRYPTO_TYPE_3DES
, ACRYPTO_MODE_OFB
);
2322 * 3DES decryption functions.
2324 static inline int hifn_decrypt_3des_ecb(struct ablkcipher_request
*req
)
2326 return hifn_setup_crypto(req
, ACRYPTO_OP_DECRYPT
,
2327 ACRYPTO_TYPE_3DES
, ACRYPTO_MODE_ECB
);
2329 static inline int hifn_decrypt_3des_cbc(struct ablkcipher_request
*req
)
2331 return hifn_setup_crypto(req
, ACRYPTO_OP_DECRYPT
,
2332 ACRYPTO_TYPE_3DES
, ACRYPTO_MODE_CBC
);
2334 static inline int hifn_decrypt_3des_cfb(struct ablkcipher_request
*req
)
2336 return hifn_setup_crypto(req
, ACRYPTO_OP_DECRYPT
,
2337 ACRYPTO_TYPE_3DES
, ACRYPTO_MODE_CFB
);
2339 static inline int hifn_decrypt_3des_ofb(struct ablkcipher_request
*req
)
2341 return hifn_setup_crypto(req
, ACRYPTO_OP_DECRYPT
,
2342 ACRYPTO_TYPE_3DES
, ACRYPTO_MODE_OFB
);
2345 struct hifn_alg_template
2347 char name
[CRYPTO_MAX_ALG_NAME
];
2348 char drv_name
[CRYPTO_MAX_ALG_NAME
];
2350 struct ablkcipher_alg ablkcipher
;
2353 static struct hifn_alg_template hifn_alg_templates
[] = {
2355 * 3DES ECB, CBC, CFB and OFB modes.
2358 .name
= "cfb(des3_ede)", .drv_name
= "hifn-3des", .bsize
= 8,
2360 .min_keysize
= HIFN_3DES_KEY_LENGTH
,
2361 .max_keysize
= HIFN_3DES_KEY_LENGTH
,
2362 .setkey
= hifn_setkey
,
2363 .encrypt
= hifn_encrypt_3des_cfb
,
2364 .decrypt
= hifn_decrypt_3des_cfb
,
2368 .name
= "ofb(des3_ede)", .drv_name
= "hifn-3des", .bsize
= 8,
2370 .min_keysize
= HIFN_3DES_KEY_LENGTH
,
2371 .max_keysize
= HIFN_3DES_KEY_LENGTH
,
2372 .setkey
= hifn_setkey
,
2373 .encrypt
= hifn_encrypt_3des_ofb
,
2374 .decrypt
= hifn_decrypt_3des_ofb
,
2378 .name
= "cbc(des3_ede)", .drv_name
= "hifn-3des", .bsize
= 8,
2380 .min_keysize
= HIFN_3DES_KEY_LENGTH
,
2381 .max_keysize
= HIFN_3DES_KEY_LENGTH
,
2382 .setkey
= hifn_setkey
,
2383 .encrypt
= hifn_encrypt_3des_cbc
,
2384 .decrypt
= hifn_decrypt_3des_cbc
,
2388 .name
= "ecb(des3_ede)", .drv_name
= "hifn-3des", .bsize
= 8,
2390 .min_keysize
= HIFN_3DES_KEY_LENGTH
,
2391 .max_keysize
= HIFN_3DES_KEY_LENGTH
,
2392 .setkey
= hifn_setkey
,
2393 .encrypt
= hifn_encrypt_3des_ecb
,
2394 .decrypt
= hifn_decrypt_3des_ecb
,
2399 * DES ECB, CBC, CFB and OFB modes.
2402 .name
= "cfb(des)", .drv_name
= "hifn-des", .bsize
= 8,
2404 .min_keysize
= HIFN_DES_KEY_LENGTH
,
2405 .max_keysize
= HIFN_DES_KEY_LENGTH
,
2406 .setkey
= hifn_setkey
,
2407 .encrypt
= hifn_encrypt_des_cfb
,
2408 .decrypt
= hifn_decrypt_des_cfb
,
2412 .name
= "ofb(des)", .drv_name
= "hifn-des", .bsize
= 8,
2414 .min_keysize
= HIFN_DES_KEY_LENGTH
,
2415 .max_keysize
= HIFN_DES_KEY_LENGTH
,
2416 .setkey
= hifn_setkey
,
2417 .encrypt
= hifn_encrypt_des_ofb
,
2418 .decrypt
= hifn_decrypt_des_ofb
,
2422 .name
= "cbc(des)", .drv_name
= "hifn-des", .bsize
= 8,
2424 .min_keysize
= HIFN_DES_KEY_LENGTH
,
2425 .max_keysize
= HIFN_DES_KEY_LENGTH
,
2426 .setkey
= hifn_setkey
,
2427 .encrypt
= hifn_encrypt_des_cbc
,
2428 .decrypt
= hifn_decrypt_des_cbc
,
2432 .name
= "ecb(des)", .drv_name
= "hifn-des", .bsize
= 8,
2434 .min_keysize
= HIFN_DES_KEY_LENGTH
,
2435 .max_keysize
= HIFN_DES_KEY_LENGTH
,
2436 .setkey
= hifn_setkey
,
2437 .encrypt
= hifn_encrypt_des_ecb
,
2438 .decrypt
= hifn_decrypt_des_ecb
,
2443 * AES ECB, CBC, CFB and OFB modes.
2446 .name
= "ecb(aes)", .drv_name
= "hifn-aes", .bsize
= 16,
2448 .min_keysize
= AES_MIN_KEY_SIZE
,
2449 .max_keysize
= AES_MAX_KEY_SIZE
,
2450 .setkey
= hifn_setkey
,
2451 .encrypt
= hifn_encrypt_aes_ecb
,
2452 .decrypt
= hifn_decrypt_aes_ecb
,
2456 .name
= "cbc(aes)", .drv_name
= "hifn-aes", .bsize
= 16,
2458 .min_keysize
= AES_MIN_KEY_SIZE
,
2459 .max_keysize
= AES_MAX_KEY_SIZE
,
2460 .setkey
= hifn_setkey
,
2461 .encrypt
= hifn_encrypt_aes_cbc
,
2462 .decrypt
= hifn_decrypt_aes_cbc
,
2466 .name
= "cfb(aes)", .drv_name
= "hifn-aes", .bsize
= 16,
2468 .min_keysize
= AES_MIN_KEY_SIZE
,
2469 .max_keysize
= AES_MAX_KEY_SIZE
,
2470 .setkey
= hifn_setkey
,
2471 .encrypt
= hifn_encrypt_aes_cfb
,
2472 .decrypt
= hifn_decrypt_aes_cfb
,
2476 .name
= "ofb(aes)", .drv_name
= "hifn-aes", .bsize
= 16,
2478 .min_keysize
= AES_MIN_KEY_SIZE
,
2479 .max_keysize
= AES_MAX_KEY_SIZE
,
2480 .setkey
= hifn_setkey
,
2481 .encrypt
= hifn_encrypt_aes_ofb
,
2482 .decrypt
= hifn_decrypt_aes_ofb
,
2487 static int hifn_cra_init(struct crypto_tfm
*tfm
)
2489 struct crypto_alg
*alg
= tfm
->__crt_alg
;
2490 struct hifn_crypto_alg
*ha
= crypto_alg_to_hifn(alg
);
2491 struct hifn_context
*ctx
= crypto_tfm_ctx(tfm
);
2498 static int hifn_alg_alloc(struct hifn_device
*dev
, struct hifn_alg_template
*t
)
2500 struct hifn_crypto_alg
*alg
;
2503 alg
= kzalloc(sizeof(struct hifn_crypto_alg
), GFP_KERNEL
);
2507 snprintf(alg
->alg
.cra_name
, CRYPTO_MAX_ALG_NAME
, "%s", t
->name
);
2508 snprintf(alg
->alg
.cra_driver_name
, CRYPTO_MAX_ALG_NAME
, "%s", t
->drv_name
);
2510 alg
->alg
.cra_priority
= 300;
2511 alg
->alg
.cra_flags
= CRYPTO_ALG_TYPE_ABLKCIPHER
| CRYPTO_ALG_ASYNC
;
2512 alg
->alg
.cra_blocksize
= t
->bsize
;
2513 alg
->alg
.cra_ctxsize
= sizeof(struct hifn_context
);
2514 alg
->alg
.cra_alignmask
= 0;
2515 alg
->alg
.cra_type
= &crypto_ablkcipher_type
;
2516 alg
->alg
.cra_module
= THIS_MODULE
;
2517 alg
->alg
.cra_u
.ablkcipher
= t
->ablkcipher
;
2518 alg
->alg
.cra_init
= hifn_cra_init
;
2522 list_add_tail(&alg
->entry
, &dev
->alg_list
);
2524 err
= crypto_register_alg(&alg
->alg
);
2526 list_del(&alg
->entry
);
2533 static void hifn_unregister_alg(struct hifn_device
*dev
)
2535 struct hifn_crypto_alg
*a
, *n
;
2537 list_for_each_entry_safe(a
, n
, &dev
->alg_list
, entry
) {
2538 list_del(&a
->entry
);
2539 crypto_unregister_alg(&a
->alg
);
2544 static int hifn_register_alg(struct hifn_device
*dev
)
2548 for (i
=0; i
<ARRAY_SIZE(hifn_alg_templates
); ++i
) {
2549 err
= hifn_alg_alloc(dev
, &hifn_alg_templates
[i
]);
2557 hifn_unregister_alg(dev
);
2561 static void hifn_tasklet_callback(unsigned long data
)
2563 struct hifn_device
*dev
= (struct hifn_device
*)data
;
2566 * This is ok to call this without lock being held,
2567 * althogh it modifies some parameters used in parallel,
2568 * (like dev->success), but they are used in process
2569 * context or update is atomic (like setting dev->sa[i] to NULL).
2571 hifn_check_for_completion(dev
, 0);
2574 static int hifn_probe(struct pci_dev
*pdev
, const struct pci_device_id
*id
)
2577 struct hifn_device
*dev
;
2580 err
= pci_enable_device(pdev
);
2583 pci_set_master(pdev
);
2585 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
2587 goto err_out_disable_pci_device
;
2589 snprintf(name
, sizeof(name
), "hifn%d",
2590 atomic_inc_return(&hifn_dev_number
)-1);
2592 err
= pci_request_regions(pdev
, name
);
2594 goto err_out_disable_pci_device
;
2596 if (pci_resource_len(pdev
, 0) < HIFN_BAR0_SIZE
||
2597 pci_resource_len(pdev
, 1) < HIFN_BAR1_SIZE
||
2598 pci_resource_len(pdev
, 2) < HIFN_BAR2_SIZE
) {
2599 dprintk("%s: Broken hardware - I/O regions are too small.\n",
2602 goto err_out_free_regions
;
2605 dev
= kzalloc(sizeof(struct hifn_device
) + sizeof(struct crypto_alg
),
2609 goto err_out_free_regions
;
2612 INIT_LIST_HEAD(&dev
->alg_list
);
2614 snprintf(dev
->name
, sizeof(dev
->name
), "%s", name
);
2615 spin_lock_init(&dev
->lock
);
2617 for (i
=0; i
<3; ++i
) {
2618 unsigned long addr
, size
;
2620 addr
= pci_resource_start(pdev
, i
);
2621 size
= pci_resource_len(pdev
, i
);
2623 dev
->bar
[i
] = ioremap_nocache(addr
, size
);
2625 goto err_out_unmap_bars
;
2628 dev
->result_mem
= __get_free_pages(GFP_KERNEL
, HIFN_MAX_RESULT_ORDER
);
2629 if (!dev
->result_mem
) {
2630 dprintk("Failed to allocate %d pages for result_mem.\n",
2631 HIFN_MAX_RESULT_ORDER
);
2632 goto err_out_unmap_bars
;
2634 memset((void *)dev
->result_mem
, 0, PAGE_SIZE
*(1<<HIFN_MAX_RESULT_ORDER
));
2636 dev
->dst
= pci_map_single(pdev
, (void *)dev
->result_mem
,
2637 PAGE_SIZE
<< HIFN_MAX_RESULT_ORDER
, PCI_DMA_FROMDEVICE
);
2639 dev
->desc_virt
= pci_alloc_consistent(pdev
, sizeof(struct hifn_dma
),
2641 if (!dev
->desc_virt
) {
2642 dprintk("Failed to allocate descriptor rings.\n");
2643 goto err_out_free_result_pages
;
2645 memset(dev
->desc_virt
, 0, sizeof(struct hifn_dma
));
2648 dev
->irq
= pdev
->irq
;
2650 for (i
=0; i
<HIFN_D_RES_RSIZE
; ++i
)
2653 pci_set_drvdata(pdev
, dev
);
2655 tasklet_init(&dev
->tasklet
, hifn_tasklet_callback
, (unsigned long)dev
);
2657 crypto_init_queue(&dev
->queue
, 1);
2659 err
= request_irq(dev
->irq
, hifn_interrupt
, IRQF_SHARED
, dev
->name
, dev
);
2661 dprintk("Failed to request IRQ%d: err: %d.\n", dev
->irq
, err
);
2663 goto err_out_free_desc
;
2666 err
= hifn_start_device(dev
);
2668 goto err_out_free_irq
;
2670 err
= hifn_test(dev
, 1, 0);
2672 goto err_out_stop_device
;
2674 err
= hifn_register_rng(dev
);
2676 goto err_out_stop_device
;
2678 err
= hifn_register_alg(dev
);
2680 goto err_out_unregister_rng
;
2682 INIT_DELAYED_WORK(&dev
->work
, hifn_work
);
2683 schedule_delayed_work(&dev
->work
, HZ
);
2685 dprintk("HIFN crypto accelerator card at %s has been "
2686 "successfully registered as %s.\n",
2687 pci_name(pdev
), dev
->name
);
2691 err_out_unregister_rng
:
2692 hifn_unregister_rng(dev
);
2693 err_out_stop_device
:
2694 hifn_reset_dma(dev
, 1);
2695 hifn_stop_device(dev
);
2697 free_irq(dev
->irq
, dev
->name
);
2698 tasklet_kill(&dev
->tasklet
);
2700 pci_free_consistent(pdev
, sizeof(struct hifn_dma
),
2701 dev
->desc_virt
, dev
->desc_dma
);
2703 err_out_free_result_pages
:
2704 pci_unmap_single(pdev
, dev
->dst
, PAGE_SIZE
<< HIFN_MAX_RESULT_ORDER
,
2705 PCI_DMA_FROMDEVICE
);
2706 free_pages(dev
->result_mem
, HIFN_MAX_RESULT_ORDER
);
2711 iounmap(dev
->bar
[i
]);
2713 err_out_free_regions
:
2714 pci_release_regions(pdev
);
2716 err_out_disable_pci_device
:
2717 pci_disable_device(pdev
);
2722 static void hifn_remove(struct pci_dev
*pdev
)
2725 struct hifn_device
*dev
;
2727 dev
= pci_get_drvdata(pdev
);
2730 cancel_delayed_work(&dev
->work
);
2731 flush_scheduled_work();
2733 hifn_unregister_rng(dev
);
2734 hifn_unregister_alg(dev
);
2735 hifn_reset_dma(dev
, 1);
2736 hifn_stop_device(dev
);
2738 free_irq(dev
->irq
, dev
->name
);
2739 tasklet_kill(&dev
->tasklet
);
2743 pci_free_consistent(pdev
, sizeof(struct hifn_dma
),
2744 dev
->desc_virt
, dev
->desc_dma
);
2745 pci_unmap_single(pdev
, dev
->dst
,
2746 PAGE_SIZE
<< HIFN_MAX_RESULT_ORDER
,
2747 PCI_DMA_FROMDEVICE
);
2748 free_pages(dev
->result_mem
, HIFN_MAX_RESULT_ORDER
);
2751 iounmap(dev
->bar
[i
]);
2756 pci_release_regions(pdev
);
2757 pci_disable_device(pdev
);
2760 static struct pci_device_id hifn_pci_tbl
[] = {
2761 { PCI_DEVICE(PCI_VENDOR_ID_HIFN
, PCI_DEVICE_ID_HIFN_7955
) },
2762 { PCI_DEVICE(PCI_VENDOR_ID_HIFN
, PCI_DEVICE_ID_HIFN_7956
) },
2765 MODULE_DEVICE_TABLE(pci
, hifn_pci_tbl
);
2767 static struct pci_driver hifn_pci_driver
= {
2769 .id_table
= hifn_pci_tbl
,
2770 .probe
= hifn_probe
,
2771 .remove
= __devexit_p(hifn_remove
),
2774 static int __devinit
hifn_init(void)
2779 if (strncmp(hifn_pll_ref
, "ext", 3) &&
2780 strncmp(hifn_pll_ref
, "pci", 3)) {
2781 printk(KERN_ERR
"hifn795x: invalid hifn_pll_ref clock, "
2782 "must be pci or ext");
2787 * For the 7955/7956 the reference clock frequency must be in the
2788 * range of 20MHz-100MHz. For the 7954 the upper bound is 66.67MHz,
2789 * but this chip is currently not supported.
2791 if (hifn_pll_ref
[3] != '\0') {
2792 freq
= simple_strtoul(hifn_pll_ref
+ 3, NULL
, 10);
2793 if (freq
< 20 || freq
> 100) {
2794 printk(KERN_ERR
"hifn795x: invalid hifn_pll_ref "
2795 "frequency, must be in the range "
2801 err
= pci_register_driver(&hifn_pci_driver
);
2803 dprintk("Failed to register PCI driver for %s device.\n",
2804 hifn_pci_driver
.name
);
2808 printk(KERN_INFO
"Driver for HIFN 795x crypto accelerator chip "
2809 "has been successfully registered.\n");
2814 static void __devexit
hifn_fini(void)
2816 pci_unregister_driver(&hifn_pci_driver
);
2818 printk(KERN_INFO
"Driver for HIFN 795x crypto accelerator chip "
2819 "has been successfully unregistered.\n");
2822 module_init(hifn_init
);
2823 module_exit(hifn_fini
);
2825 MODULE_LICENSE("GPL");
2826 MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
2827 MODULE_DESCRIPTION("Driver for HIFN 795x crypto accelerator chip.");