mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-15 20:16:43 +07:00
36e09e1f87
Remove unneeded variables and assignments. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2694 lines
75 KiB
C
2694 lines
75 KiB
C
/*
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* 2007+ Copyright (c) Evgeniy Polyakov <johnpol@2ka.mipt.ru>
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/mod_devicetable.h>
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#include <linux/interrupt.h>
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#include <linux/pci.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <linux/scatterlist.h>
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#include <linux/highmem.h>
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#include <linux/crypto.h>
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#include <linux/hw_random.h>
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#include <linux/ktime.h>
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#include <crypto/algapi.h>
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#include <crypto/des.h>
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static char hifn_pll_ref[sizeof("extNNN")] = "ext";
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module_param_string(hifn_pll_ref, hifn_pll_ref, sizeof(hifn_pll_ref), 0444);
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MODULE_PARM_DESC(hifn_pll_ref,
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"PLL reference clock (pci[freq] or ext[freq], default ext)");
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static atomic_t hifn_dev_number;
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#define ACRYPTO_OP_DECRYPT 0
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#define ACRYPTO_OP_ENCRYPT 1
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#define ACRYPTO_OP_HMAC 2
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#define ACRYPTO_OP_RNG 3
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#define ACRYPTO_MODE_ECB 0
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#define ACRYPTO_MODE_CBC 1
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#define ACRYPTO_MODE_CFB 2
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#define ACRYPTO_MODE_OFB 3
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#define ACRYPTO_TYPE_AES_128 0
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#define ACRYPTO_TYPE_AES_192 1
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#define ACRYPTO_TYPE_AES_256 2
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#define ACRYPTO_TYPE_3DES 3
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#define ACRYPTO_TYPE_DES 4
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#define PCI_VENDOR_ID_HIFN 0x13A3
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#define PCI_DEVICE_ID_HIFN_7955 0x0020
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#define PCI_DEVICE_ID_HIFN_7956 0x001d
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/* I/O region sizes */
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#define HIFN_BAR0_SIZE 0x1000
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#define HIFN_BAR1_SIZE 0x2000
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#define HIFN_BAR2_SIZE 0x8000
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/* DMA registres */
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#define HIFN_DMA_CRA 0x0C /* DMA Command Ring Address */
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#define HIFN_DMA_SDRA 0x1C /* DMA Source Data Ring Address */
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#define HIFN_DMA_RRA 0x2C /* DMA Result Ring Address */
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#define HIFN_DMA_DDRA 0x3C /* DMA Destination Data Ring Address */
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#define HIFN_DMA_STCTL 0x40 /* DMA Status and Control */
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#define HIFN_DMA_INTREN 0x44 /* DMA Interrupt Enable */
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#define HIFN_DMA_CFG1 0x48 /* DMA Configuration #1 */
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#define HIFN_DMA_CFG2 0x6C /* DMA Configuration #2 */
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#define HIFN_CHIP_ID 0x98 /* Chip ID */
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/*
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* Processing Unit Registers (offset from BASEREG0)
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*/
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#define HIFN_0_PUDATA 0x00 /* Processing Unit Data */
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#define HIFN_0_PUCTRL 0x04 /* Processing Unit Control */
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#define HIFN_0_PUISR 0x08 /* Processing Unit Interrupt Status */
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#define HIFN_0_PUCNFG 0x0c /* Processing Unit Configuration */
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#define HIFN_0_PUIER 0x10 /* Processing Unit Interrupt Enable */
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#define HIFN_0_PUSTAT 0x14 /* Processing Unit Status/Chip ID */
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#define HIFN_0_FIFOSTAT 0x18 /* FIFO Status */
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#define HIFN_0_FIFOCNFG 0x1c /* FIFO Configuration */
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#define HIFN_0_SPACESIZE 0x20 /* Register space size */
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/* Processing Unit Control Register (HIFN_0_PUCTRL) */
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#define HIFN_PUCTRL_CLRSRCFIFO 0x0010 /* clear source fifo */
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#define HIFN_PUCTRL_STOP 0x0008 /* stop pu */
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#define HIFN_PUCTRL_LOCKRAM 0x0004 /* lock ram */
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#define HIFN_PUCTRL_DMAENA 0x0002 /* enable dma */
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#define HIFN_PUCTRL_RESET 0x0001 /* Reset processing unit */
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/* Processing Unit Interrupt Status Register (HIFN_0_PUISR) */
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#define HIFN_PUISR_CMDINVAL 0x8000 /* Invalid command interrupt */
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#define HIFN_PUISR_DATAERR 0x4000 /* Data error interrupt */
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#define HIFN_PUISR_SRCFIFO 0x2000 /* Source FIFO ready interrupt */
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#define HIFN_PUISR_DSTFIFO 0x1000 /* Destination FIFO ready interrupt */
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#define HIFN_PUISR_DSTOVER 0x0200 /* Destination overrun interrupt */
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#define HIFN_PUISR_SRCCMD 0x0080 /* Source command interrupt */
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#define HIFN_PUISR_SRCCTX 0x0040 /* Source context interrupt */
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#define HIFN_PUISR_SRCDATA 0x0020 /* Source data interrupt */
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#define HIFN_PUISR_DSTDATA 0x0010 /* Destination data interrupt */
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#define HIFN_PUISR_DSTRESULT 0x0004 /* Destination result interrupt */
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/* Processing Unit Configuration Register (HIFN_0_PUCNFG) */
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#define HIFN_PUCNFG_DRAMMASK 0xe000 /* DRAM size mask */
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#define HIFN_PUCNFG_DSZ_256K 0x0000 /* 256k dram */
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#define HIFN_PUCNFG_DSZ_512K 0x2000 /* 512k dram */
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#define HIFN_PUCNFG_DSZ_1M 0x4000 /* 1m dram */
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#define HIFN_PUCNFG_DSZ_2M 0x6000 /* 2m dram */
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#define HIFN_PUCNFG_DSZ_4M 0x8000 /* 4m dram */
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#define HIFN_PUCNFG_DSZ_8M 0xa000 /* 8m dram */
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#define HIFN_PUNCFG_DSZ_16M 0xc000 /* 16m dram */
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#define HIFN_PUCNFG_DSZ_32M 0xe000 /* 32m dram */
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#define HIFN_PUCNFG_DRAMREFRESH 0x1800 /* DRAM refresh rate mask */
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#define HIFN_PUCNFG_DRFR_512 0x0000 /* 512 divisor of ECLK */
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#define HIFN_PUCNFG_DRFR_256 0x0800 /* 256 divisor of ECLK */
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#define HIFN_PUCNFG_DRFR_128 0x1000 /* 128 divisor of ECLK */
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#define HIFN_PUCNFG_TCALLPHASES 0x0200 /* your guess is as good as mine... */
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#define HIFN_PUCNFG_TCDRVTOTEM 0x0100 /* your guess is as good as mine... */
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#define HIFN_PUCNFG_BIGENDIAN 0x0080 /* DMA big endian mode */
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#define HIFN_PUCNFG_BUS32 0x0040 /* Bus width 32bits */
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#define HIFN_PUCNFG_BUS16 0x0000 /* Bus width 16 bits */
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#define HIFN_PUCNFG_CHIPID 0x0020 /* Allow chipid from PUSTAT */
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#define HIFN_PUCNFG_DRAM 0x0010 /* Context RAM is DRAM */
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#define HIFN_PUCNFG_SRAM 0x0000 /* Context RAM is SRAM */
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#define HIFN_PUCNFG_COMPSING 0x0004 /* Enable single compression context */
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#define HIFN_PUCNFG_ENCCNFG 0x0002 /* Encryption configuration */
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/* Processing Unit Interrupt Enable Register (HIFN_0_PUIER) */
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#define HIFN_PUIER_CMDINVAL 0x8000 /* Invalid command interrupt */
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#define HIFN_PUIER_DATAERR 0x4000 /* Data error interrupt */
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#define HIFN_PUIER_SRCFIFO 0x2000 /* Source FIFO ready interrupt */
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#define HIFN_PUIER_DSTFIFO 0x1000 /* Destination FIFO ready interrupt */
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#define HIFN_PUIER_DSTOVER 0x0200 /* Destination overrun interrupt */
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#define HIFN_PUIER_SRCCMD 0x0080 /* Source command interrupt */
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#define HIFN_PUIER_SRCCTX 0x0040 /* Source context interrupt */
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#define HIFN_PUIER_SRCDATA 0x0020 /* Source data interrupt */
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#define HIFN_PUIER_DSTDATA 0x0010 /* Destination data interrupt */
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#define HIFN_PUIER_DSTRESULT 0x0004 /* Destination result interrupt */
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/* Processing Unit Status Register/Chip ID (HIFN_0_PUSTAT) */
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#define HIFN_PUSTAT_CMDINVAL 0x8000 /* Invalid command interrupt */
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#define HIFN_PUSTAT_DATAERR 0x4000 /* Data error interrupt */
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#define HIFN_PUSTAT_SRCFIFO 0x2000 /* Source FIFO ready interrupt */
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#define HIFN_PUSTAT_DSTFIFO 0x1000 /* Destination FIFO ready interrupt */
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#define HIFN_PUSTAT_DSTOVER 0x0200 /* Destination overrun interrupt */
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#define HIFN_PUSTAT_SRCCMD 0x0080 /* Source command interrupt */
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#define HIFN_PUSTAT_SRCCTX 0x0040 /* Source context interrupt */
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#define HIFN_PUSTAT_SRCDATA 0x0020 /* Source data interrupt */
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#define HIFN_PUSTAT_DSTDATA 0x0010 /* Destination data interrupt */
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#define HIFN_PUSTAT_DSTRESULT 0x0004 /* Destination result interrupt */
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#define HIFN_PUSTAT_CHIPREV 0x00ff /* Chip revision mask */
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#define HIFN_PUSTAT_CHIPENA 0xff00 /* Chip enabled mask */
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#define HIFN_PUSTAT_ENA_2 0x1100 /* Level 2 enabled */
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#define HIFN_PUSTAT_ENA_1 0x1000 /* Level 1 enabled */
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#define HIFN_PUSTAT_ENA_0 0x3000 /* Level 0 enabled */
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#define HIFN_PUSTAT_REV_2 0x0020 /* 7751 PT6/2 */
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#define HIFN_PUSTAT_REV_3 0x0030 /* 7751 PT6/3 */
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/* FIFO Status Register (HIFN_0_FIFOSTAT) */
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#define HIFN_FIFOSTAT_SRC 0x7f00 /* Source FIFO available */
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#define HIFN_FIFOSTAT_DST 0x007f /* Destination FIFO available */
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/* FIFO Configuration Register (HIFN_0_FIFOCNFG) */
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#define HIFN_FIFOCNFG_THRESHOLD 0x0400 /* must be written as 1 */
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/*
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* DMA Interface Registers (offset from BASEREG1)
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*/
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#define HIFN_1_DMA_CRAR 0x0c /* DMA Command Ring Address */
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#define HIFN_1_DMA_SRAR 0x1c /* DMA Source Ring Address */
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#define HIFN_1_DMA_RRAR 0x2c /* DMA Result Ring Address */
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#define HIFN_1_DMA_DRAR 0x3c /* DMA Destination Ring Address */
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#define HIFN_1_DMA_CSR 0x40 /* DMA Status and Control */
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#define HIFN_1_DMA_IER 0x44 /* DMA Interrupt Enable */
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#define HIFN_1_DMA_CNFG 0x48 /* DMA Configuration */
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#define HIFN_1_PLL 0x4c /* 795x: PLL config */
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#define HIFN_1_7811_RNGENA 0x60 /* 7811: rng enable */
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#define HIFN_1_7811_RNGCFG 0x64 /* 7811: rng config */
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#define HIFN_1_7811_RNGDAT 0x68 /* 7811: rng data */
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#define HIFN_1_7811_RNGSTS 0x6c /* 7811: rng status */
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#define HIFN_1_7811_MIPSRST 0x94 /* 7811: MIPS reset */
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#define HIFN_1_REVID 0x98 /* Revision ID */
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#define HIFN_1_UNLOCK_SECRET1 0xf4
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#define HIFN_1_UNLOCK_SECRET2 0xfc
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#define HIFN_1_PUB_RESET 0x204 /* Public/RNG Reset */
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#define HIFN_1_PUB_BASE 0x300 /* Public Base Address */
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#define HIFN_1_PUB_OPLEN 0x304 /* Public Operand Length */
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#define HIFN_1_PUB_OP 0x308 /* Public Operand */
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#define HIFN_1_PUB_STATUS 0x30c /* Public Status */
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#define HIFN_1_PUB_IEN 0x310 /* Public Interrupt enable */
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#define HIFN_1_RNG_CONFIG 0x314 /* RNG config */
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#define HIFN_1_RNG_DATA 0x318 /* RNG data */
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#define HIFN_1_PUB_MEM 0x400 /* start of Public key memory */
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#define HIFN_1_PUB_MEMEND 0xbff /* end of Public key memory */
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/* DMA Status and Control Register (HIFN_1_DMA_CSR) */
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#define HIFN_DMACSR_D_CTRLMASK 0xc0000000 /* Destinition Ring Control */
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#define HIFN_DMACSR_D_CTRL_NOP 0x00000000 /* Dest. Control: no-op */
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#define HIFN_DMACSR_D_CTRL_DIS 0x40000000 /* Dest. Control: disable */
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#define HIFN_DMACSR_D_CTRL_ENA 0x80000000 /* Dest. Control: enable */
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#define HIFN_DMACSR_D_ABORT 0x20000000 /* Destinition Ring PCIAbort */
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#define HIFN_DMACSR_D_DONE 0x10000000 /* Destinition Ring Done */
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#define HIFN_DMACSR_D_LAST 0x08000000 /* Destinition Ring Last */
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#define HIFN_DMACSR_D_WAIT 0x04000000 /* Destinition Ring Waiting */
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#define HIFN_DMACSR_D_OVER 0x02000000 /* Destinition Ring Overflow */
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#define HIFN_DMACSR_R_CTRL 0x00c00000 /* Result Ring Control */
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#define HIFN_DMACSR_R_CTRL_NOP 0x00000000 /* Result Control: no-op */
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#define HIFN_DMACSR_R_CTRL_DIS 0x00400000 /* Result Control: disable */
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#define HIFN_DMACSR_R_CTRL_ENA 0x00800000 /* Result Control: enable */
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#define HIFN_DMACSR_R_ABORT 0x00200000 /* Result Ring PCI Abort */
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#define HIFN_DMACSR_R_DONE 0x00100000 /* Result Ring Done */
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#define HIFN_DMACSR_R_LAST 0x00080000 /* Result Ring Last */
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#define HIFN_DMACSR_R_WAIT 0x00040000 /* Result Ring Waiting */
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#define HIFN_DMACSR_R_OVER 0x00020000 /* Result Ring Overflow */
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#define HIFN_DMACSR_S_CTRL 0x0000c000 /* Source Ring Control */
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#define HIFN_DMACSR_S_CTRL_NOP 0x00000000 /* Source Control: no-op */
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#define HIFN_DMACSR_S_CTRL_DIS 0x00004000 /* Source Control: disable */
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#define HIFN_DMACSR_S_CTRL_ENA 0x00008000 /* Source Control: enable */
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#define HIFN_DMACSR_S_ABORT 0x00002000 /* Source Ring PCI Abort */
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#define HIFN_DMACSR_S_DONE 0x00001000 /* Source Ring Done */
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#define HIFN_DMACSR_S_LAST 0x00000800 /* Source Ring Last */
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#define HIFN_DMACSR_S_WAIT 0x00000400 /* Source Ring Waiting */
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#define HIFN_DMACSR_ILLW 0x00000200 /* Illegal write (7811 only) */
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#define HIFN_DMACSR_ILLR 0x00000100 /* Illegal read (7811 only) */
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#define HIFN_DMACSR_C_CTRL 0x000000c0 /* Command Ring Control */
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#define HIFN_DMACSR_C_CTRL_NOP 0x00000000 /* Command Control: no-op */
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#define HIFN_DMACSR_C_CTRL_DIS 0x00000040 /* Command Control: disable */
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#define HIFN_DMACSR_C_CTRL_ENA 0x00000080 /* Command Control: enable */
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#define HIFN_DMACSR_C_ABORT 0x00000020 /* Command Ring PCI Abort */
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#define HIFN_DMACSR_C_DONE 0x00000010 /* Command Ring Done */
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#define HIFN_DMACSR_C_LAST 0x00000008 /* Command Ring Last */
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#define HIFN_DMACSR_C_WAIT 0x00000004 /* Command Ring Waiting */
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#define HIFN_DMACSR_PUBDONE 0x00000002 /* Public op done (7951 only) */
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#define HIFN_DMACSR_ENGINE 0x00000001 /* Command Ring Engine IRQ */
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/* DMA Interrupt Enable Register (HIFN_1_DMA_IER) */
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#define HIFN_DMAIER_D_ABORT 0x20000000 /* Destination Ring PCIAbort */
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#define HIFN_DMAIER_D_DONE 0x10000000 /* Destination Ring Done */
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#define HIFN_DMAIER_D_LAST 0x08000000 /* Destination Ring Last */
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#define HIFN_DMAIER_D_WAIT 0x04000000 /* Destination Ring Waiting */
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#define HIFN_DMAIER_D_OVER 0x02000000 /* Destination Ring Overflow */
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#define HIFN_DMAIER_R_ABORT 0x00200000 /* Result Ring PCI Abort */
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#define HIFN_DMAIER_R_DONE 0x00100000 /* Result Ring Done */
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#define HIFN_DMAIER_R_LAST 0x00080000 /* Result Ring Last */
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#define HIFN_DMAIER_R_WAIT 0x00040000 /* Result Ring Waiting */
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#define HIFN_DMAIER_R_OVER 0x00020000 /* Result Ring Overflow */
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#define HIFN_DMAIER_S_ABORT 0x00002000 /* Source Ring PCI Abort */
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#define HIFN_DMAIER_S_DONE 0x00001000 /* Source Ring Done */
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#define HIFN_DMAIER_S_LAST 0x00000800 /* Source Ring Last */
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#define HIFN_DMAIER_S_WAIT 0x00000400 /* Source Ring Waiting */
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#define HIFN_DMAIER_ILLW 0x00000200 /* Illegal write (7811 only) */
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#define HIFN_DMAIER_ILLR 0x00000100 /* Illegal read (7811 only) */
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#define HIFN_DMAIER_C_ABORT 0x00000020 /* Command Ring PCI Abort */
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#define HIFN_DMAIER_C_DONE 0x00000010 /* Command Ring Done */
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#define HIFN_DMAIER_C_LAST 0x00000008 /* Command Ring Last */
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#define HIFN_DMAIER_C_WAIT 0x00000004 /* Command Ring Waiting */
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#define HIFN_DMAIER_PUBDONE 0x00000002 /* public op done (7951 only) */
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#define HIFN_DMAIER_ENGINE 0x00000001 /* Engine IRQ */
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/* DMA Configuration Register (HIFN_1_DMA_CNFG) */
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#define HIFN_DMACNFG_BIGENDIAN 0x10000000 /* big endian mode */
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#define HIFN_DMACNFG_POLLFREQ 0x00ff0000 /* Poll frequency mask */
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#define HIFN_DMACNFG_UNLOCK 0x00000800
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#define HIFN_DMACNFG_POLLINVAL 0x00000700 /* Invalid Poll Scalar */
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#define HIFN_DMACNFG_LAST 0x00000010 /* Host control LAST bit */
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#define HIFN_DMACNFG_MODE 0x00000004 /* DMA mode */
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#define HIFN_DMACNFG_DMARESET 0x00000002 /* DMA Reset # */
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#define HIFN_DMACNFG_MSTRESET 0x00000001 /* Master Reset # */
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/* PLL configuration register */
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#define HIFN_PLL_REF_CLK_HBI 0x00000000 /* HBI reference clock */
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#define HIFN_PLL_REF_CLK_PLL 0x00000001 /* PLL reference clock */
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#define HIFN_PLL_BP 0x00000002 /* Reference clock bypass */
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#define HIFN_PLL_PK_CLK_HBI 0x00000000 /* PK engine HBI clock */
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#define HIFN_PLL_PK_CLK_PLL 0x00000008 /* PK engine PLL clock */
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#define HIFN_PLL_PE_CLK_HBI 0x00000000 /* PE engine HBI clock */
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#define HIFN_PLL_PE_CLK_PLL 0x00000010 /* PE engine PLL clock */
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#define HIFN_PLL_RESERVED_1 0x00000400 /* Reserved bit, must be 1 */
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#define HIFN_PLL_ND_SHIFT 11 /* Clock multiplier shift */
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#define HIFN_PLL_ND_MULT_2 0x00000000 /* PLL clock multiplier 2 */
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#define HIFN_PLL_ND_MULT_4 0x00000800 /* PLL clock multiplier 4 */
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#define HIFN_PLL_ND_MULT_6 0x00001000 /* PLL clock multiplier 6 */
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#define HIFN_PLL_ND_MULT_8 0x00001800 /* PLL clock multiplier 8 */
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#define HIFN_PLL_ND_MULT_10 0x00002000 /* PLL clock multiplier 10 */
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#define HIFN_PLL_ND_MULT_12 0x00002800 /* PLL clock multiplier 12 */
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#define HIFN_PLL_IS_1_8 0x00000000 /* charge pump (mult. 1-8) */
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#define HIFN_PLL_IS_9_12 0x00010000 /* charge pump (mult. 9-12) */
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#define HIFN_PLL_FCK_MAX 266 /* Maximum PLL frequency */
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/* Public key reset register (HIFN_1_PUB_RESET) */
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#define HIFN_PUBRST_RESET 0x00000001 /* reset public/rng unit */
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/* Public base address register (HIFN_1_PUB_BASE) */
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#define HIFN_PUBBASE_ADDR 0x00003fff /* base address */
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/* Public operand length register (HIFN_1_PUB_OPLEN) */
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#define HIFN_PUBOPLEN_MOD_M 0x0000007f /* modulus length mask */
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#define HIFN_PUBOPLEN_MOD_S 0 /* modulus length shift */
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#define HIFN_PUBOPLEN_EXP_M 0x0003ff80 /* exponent length mask */
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#define HIFN_PUBOPLEN_EXP_S 7 /* exponent length shift */
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#define HIFN_PUBOPLEN_RED_M 0x003c0000 /* reducend length mask */
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#define HIFN_PUBOPLEN_RED_S 18 /* reducend length shift */
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/* Public operation register (HIFN_1_PUB_OP) */
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#define HIFN_PUBOP_AOFFSET_M 0x0000007f /* A offset mask */
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#define HIFN_PUBOP_AOFFSET_S 0 /* A offset shift */
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#define HIFN_PUBOP_BOFFSET_M 0x00000f80 /* B offset mask */
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#define HIFN_PUBOP_BOFFSET_S 7 /* B offset shift */
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#define HIFN_PUBOP_MOFFSET_M 0x0003f000 /* M offset mask */
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#define HIFN_PUBOP_MOFFSET_S 12 /* M offset shift */
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#define HIFN_PUBOP_OP_MASK 0x003c0000 /* Opcode: */
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#define HIFN_PUBOP_OP_NOP 0x00000000 /* NOP */
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#define HIFN_PUBOP_OP_ADD 0x00040000 /* ADD */
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#define HIFN_PUBOP_OP_ADDC 0x00080000 /* ADD w/carry */
|
|
#define HIFN_PUBOP_OP_SUB 0x000c0000 /* SUB */
|
|
#define HIFN_PUBOP_OP_SUBC 0x00100000 /* SUB w/carry */
|
|
#define HIFN_PUBOP_OP_MODADD 0x00140000 /* Modular ADD */
|
|
#define HIFN_PUBOP_OP_MODSUB 0x00180000 /* Modular SUB */
|
|
#define HIFN_PUBOP_OP_INCA 0x001c0000 /* INC A */
|
|
#define HIFN_PUBOP_OP_DECA 0x00200000 /* DEC A */
|
|
#define HIFN_PUBOP_OP_MULT 0x00240000 /* MULT */
|
|
#define HIFN_PUBOP_OP_MODMULT 0x00280000 /* Modular MULT */
|
|
#define HIFN_PUBOP_OP_MODRED 0x002c0000 /* Modular RED */
|
|
#define HIFN_PUBOP_OP_MODEXP 0x00300000 /* Modular EXP */
|
|
|
|
/* Public status register (HIFN_1_PUB_STATUS) */
|
|
#define HIFN_PUBSTS_DONE 0x00000001 /* operation done */
|
|
#define HIFN_PUBSTS_CARRY 0x00000002 /* carry */
|
|
|
|
/* Public interrupt enable register (HIFN_1_PUB_IEN) */
|
|
#define HIFN_PUBIEN_DONE 0x00000001 /* operation done interrupt */
|
|
|
|
/* Random number generator config register (HIFN_1_RNG_CONFIG) */
|
|
#define HIFN_RNGCFG_ENA 0x00000001 /* enable rng */
|
|
|
|
#define HIFN_NAMESIZE 32
|
|
#define HIFN_MAX_RESULT_ORDER 5
|
|
|
|
#define HIFN_D_CMD_RSIZE (24 * 1)
|
|
#define HIFN_D_SRC_RSIZE (80 * 1)
|
|
#define HIFN_D_DST_RSIZE (80 * 1)
|
|
#define HIFN_D_RES_RSIZE (24 * 1)
|
|
|
|
#define HIFN_D_DST_DALIGN 4
|
|
|
|
#define HIFN_QUEUE_LENGTH (HIFN_D_CMD_RSIZE - 1)
|
|
|
|
#define AES_MIN_KEY_SIZE 16
|
|
#define AES_MAX_KEY_SIZE 32
|
|
|
|
#define HIFN_DES_KEY_LENGTH 8
|
|
#define HIFN_3DES_KEY_LENGTH 24
|
|
#define HIFN_MAX_CRYPT_KEY_LENGTH AES_MAX_KEY_SIZE
|
|
#define HIFN_IV_LENGTH 8
|
|
#define HIFN_AES_IV_LENGTH 16
|
|
#define HIFN_MAX_IV_LENGTH HIFN_AES_IV_LENGTH
|
|
|
|
#define HIFN_MAC_KEY_LENGTH 64
|
|
#define HIFN_MD5_LENGTH 16
|
|
#define HIFN_SHA1_LENGTH 20
|
|
#define HIFN_MAC_TRUNC_LENGTH 12
|
|
|
|
#define HIFN_MAX_COMMAND (8 + 8 + 8 + 64 + 260)
|
|
#define HIFN_MAX_RESULT (8 + 4 + 4 + 20 + 4)
|
|
#define HIFN_USED_RESULT 12
|
|
|
|
struct hifn_desc {
|
|
volatile __le32 l;
|
|
volatile __le32 p;
|
|
};
|
|
|
|
struct hifn_dma {
|
|
struct hifn_desc cmdr[HIFN_D_CMD_RSIZE + 1];
|
|
struct hifn_desc srcr[HIFN_D_SRC_RSIZE + 1];
|
|
struct hifn_desc dstr[HIFN_D_DST_RSIZE + 1];
|
|
struct hifn_desc resr[HIFN_D_RES_RSIZE + 1];
|
|
|
|
u8 command_bufs[HIFN_D_CMD_RSIZE][HIFN_MAX_COMMAND];
|
|
u8 result_bufs[HIFN_D_CMD_RSIZE][HIFN_MAX_RESULT];
|
|
|
|
/*
|
|
* Our current positions for insertion and removal from the descriptor
|
|
* rings.
|
|
*/
|
|
volatile int cmdi, srci, dsti, resi;
|
|
volatile int cmdu, srcu, dstu, resu;
|
|
int cmdk, srck, dstk, resk;
|
|
};
|
|
|
|
#define HIFN_FLAG_CMD_BUSY (1 << 0)
|
|
#define HIFN_FLAG_SRC_BUSY (1 << 1)
|
|
#define HIFN_FLAG_DST_BUSY (1 << 2)
|
|
#define HIFN_FLAG_RES_BUSY (1 << 3)
|
|
#define HIFN_FLAG_OLD_KEY (1 << 4)
|
|
|
|
#define HIFN_DEFAULT_ACTIVE_NUM 5
|
|
|
|
struct hifn_device {
|
|
char name[HIFN_NAMESIZE];
|
|
|
|
int irq;
|
|
|
|
struct pci_dev *pdev;
|
|
void __iomem *bar[3];
|
|
|
|
void *desc_virt;
|
|
dma_addr_t desc_dma;
|
|
|
|
u32 dmareg;
|
|
|
|
void *sa[HIFN_D_RES_RSIZE];
|
|
|
|
spinlock_t lock;
|
|
|
|
u32 flags;
|
|
int active, started;
|
|
struct delayed_work work;
|
|
unsigned long reset;
|
|
unsigned long success;
|
|
unsigned long prev_success;
|
|
|
|
u8 snum;
|
|
|
|
struct tasklet_struct tasklet;
|
|
|
|
struct crypto_queue queue;
|
|
struct list_head alg_list;
|
|
|
|
unsigned int pk_clk_freq;
|
|
|
|
#ifdef CONFIG_CRYPTO_DEV_HIFN_795X_RNG
|
|
unsigned int rng_wait_time;
|
|
ktime_t rngtime;
|
|
struct hwrng rng;
|
|
#endif
|
|
};
|
|
|
|
#define HIFN_D_LENGTH 0x0000ffff
|
|
#define HIFN_D_NOINVALID 0x01000000
|
|
#define HIFN_D_MASKDONEIRQ 0x02000000
|
|
#define HIFN_D_DESTOVER 0x04000000
|
|
#define HIFN_D_OVER 0x08000000
|
|
#define HIFN_D_LAST 0x20000000
|
|
#define HIFN_D_JUMP 0x40000000
|
|
#define HIFN_D_VALID 0x80000000
|
|
|
|
struct hifn_base_command {
|
|
volatile __le16 masks;
|
|
volatile __le16 session_num;
|
|
volatile __le16 total_source_count;
|
|
volatile __le16 total_dest_count;
|
|
};
|
|
|
|
#define HIFN_BASE_CMD_COMP 0x0100 /* enable compression engine */
|
|
#define HIFN_BASE_CMD_PAD 0x0200 /* enable padding engine */
|
|
#define HIFN_BASE_CMD_MAC 0x0400 /* enable MAC engine */
|
|
#define HIFN_BASE_CMD_CRYPT 0x0800 /* enable crypt engine */
|
|
#define HIFN_BASE_CMD_DECODE 0x2000
|
|
#define HIFN_BASE_CMD_SRCLEN_M 0xc000
|
|
#define HIFN_BASE_CMD_SRCLEN_S 14
|
|
#define HIFN_BASE_CMD_DSTLEN_M 0x3000
|
|
#define HIFN_BASE_CMD_DSTLEN_S 12
|
|
#define HIFN_BASE_CMD_LENMASK_HI 0x30000
|
|
#define HIFN_BASE_CMD_LENMASK_LO 0x0ffff
|
|
|
|
/*
|
|
* Structure to help build up the command data structure.
|
|
*/
|
|
struct hifn_crypt_command {
|
|
volatile __le16 masks;
|
|
volatile __le16 header_skip;
|
|
volatile __le16 source_count;
|
|
volatile __le16 reserved;
|
|
};
|
|
|
|
#define HIFN_CRYPT_CMD_ALG_MASK 0x0003 /* algorithm: */
|
|
#define HIFN_CRYPT_CMD_ALG_DES 0x0000 /* DES */
|
|
#define HIFN_CRYPT_CMD_ALG_3DES 0x0001 /* 3DES */
|
|
#define HIFN_CRYPT_CMD_ALG_RC4 0x0002 /* RC4 */
|
|
#define HIFN_CRYPT_CMD_ALG_AES 0x0003 /* AES */
|
|
#define HIFN_CRYPT_CMD_MODE_MASK 0x0018 /* Encrypt mode: */
|
|
#define HIFN_CRYPT_CMD_MODE_ECB 0x0000 /* ECB */
|
|
#define HIFN_CRYPT_CMD_MODE_CBC 0x0008 /* CBC */
|
|
#define HIFN_CRYPT_CMD_MODE_CFB 0x0010 /* CFB */
|
|
#define HIFN_CRYPT_CMD_MODE_OFB 0x0018 /* OFB */
|
|
#define HIFN_CRYPT_CMD_CLR_CTX 0x0040 /* clear context */
|
|
#define HIFN_CRYPT_CMD_KSZ_MASK 0x0600 /* AES key size: */
|
|
#define HIFN_CRYPT_CMD_KSZ_128 0x0000 /* 128 bit */
|
|
#define HIFN_CRYPT_CMD_KSZ_192 0x0200 /* 192 bit */
|
|
#define HIFN_CRYPT_CMD_KSZ_256 0x0400 /* 256 bit */
|
|
#define HIFN_CRYPT_CMD_NEW_KEY 0x0800 /* expect new key */
|
|
#define HIFN_CRYPT_CMD_NEW_IV 0x1000 /* expect new iv */
|
|
#define HIFN_CRYPT_CMD_SRCLEN_M 0xc000
|
|
#define HIFN_CRYPT_CMD_SRCLEN_S 14
|
|
|
|
/*
|
|
* Structure to help build up the command data structure.
|
|
*/
|
|
struct hifn_mac_command {
|
|
volatile __le16 masks;
|
|
volatile __le16 header_skip;
|
|
volatile __le16 source_count;
|
|
volatile __le16 reserved;
|
|
};
|
|
|
|
#define HIFN_MAC_CMD_ALG_MASK 0x0001
|
|
#define HIFN_MAC_CMD_ALG_SHA1 0x0000
|
|
#define HIFN_MAC_CMD_ALG_MD5 0x0001
|
|
#define HIFN_MAC_CMD_MODE_MASK 0x000c
|
|
#define HIFN_MAC_CMD_MODE_HMAC 0x0000
|
|
#define HIFN_MAC_CMD_MODE_SSL_MAC 0x0004
|
|
#define HIFN_MAC_CMD_MODE_HASH 0x0008
|
|
#define HIFN_MAC_CMD_MODE_FULL 0x0004
|
|
#define HIFN_MAC_CMD_TRUNC 0x0010
|
|
#define HIFN_MAC_CMD_RESULT 0x0020
|
|
#define HIFN_MAC_CMD_APPEND 0x0040
|
|
#define HIFN_MAC_CMD_SRCLEN_M 0xc000
|
|
#define HIFN_MAC_CMD_SRCLEN_S 14
|
|
|
|
/*
|
|
* MAC POS IPsec initiates authentication after encryption on encodes
|
|
* and before decryption on decodes.
|
|
*/
|
|
#define HIFN_MAC_CMD_POS_IPSEC 0x0200
|
|
#define HIFN_MAC_CMD_NEW_KEY 0x0800
|
|
|
|
struct hifn_comp_command {
|
|
volatile __le16 masks;
|
|
volatile __le16 header_skip;
|
|
volatile __le16 source_count;
|
|
volatile __le16 reserved;
|
|
};
|
|
|
|
#define HIFN_COMP_CMD_SRCLEN_M 0xc000
|
|
#define HIFN_COMP_CMD_SRCLEN_S 14
|
|
#define HIFN_COMP_CMD_ONE 0x0100 /* must be one */
|
|
#define HIFN_COMP_CMD_CLEARHIST 0x0010 /* clear history */
|
|
#define HIFN_COMP_CMD_UPDATEHIST 0x0008 /* update history */
|
|
#define HIFN_COMP_CMD_LZS_STRIP0 0x0004 /* LZS: strip zero */
|
|
#define HIFN_COMP_CMD_MPPC_RESTART 0x0004 /* MPPC: restart */
|
|
#define HIFN_COMP_CMD_ALG_MASK 0x0001 /* compression mode: */
|
|
#define HIFN_COMP_CMD_ALG_MPPC 0x0001 /* MPPC */
|
|
#define HIFN_COMP_CMD_ALG_LZS 0x0000 /* LZS */
|
|
|
|
struct hifn_base_result {
|
|
volatile __le16 flags;
|
|
volatile __le16 session;
|
|
volatile __le16 src_cnt; /* 15:0 of source count */
|
|
volatile __le16 dst_cnt; /* 15:0 of dest count */
|
|
};
|
|
|
|
#define HIFN_BASE_RES_DSTOVERRUN 0x0200 /* destination overrun */
|
|
#define HIFN_BASE_RES_SRCLEN_M 0xc000 /* 17:16 of source count */
|
|
#define HIFN_BASE_RES_SRCLEN_S 14
|
|
#define HIFN_BASE_RES_DSTLEN_M 0x3000 /* 17:16 of dest count */
|
|
#define HIFN_BASE_RES_DSTLEN_S 12
|
|
|
|
struct hifn_comp_result {
|
|
volatile __le16 flags;
|
|
volatile __le16 crc;
|
|
};
|
|
|
|
#define HIFN_COMP_RES_LCB_M 0xff00 /* longitudinal check byte */
|
|
#define HIFN_COMP_RES_LCB_S 8
|
|
#define HIFN_COMP_RES_RESTART 0x0004 /* MPPC: restart */
|
|
#define HIFN_COMP_RES_ENDMARKER 0x0002 /* LZS: end marker seen */
|
|
#define HIFN_COMP_RES_SRC_NOTZERO 0x0001 /* source expired */
|
|
|
|
struct hifn_mac_result {
|
|
volatile __le16 flags;
|
|
volatile __le16 reserved;
|
|
/* followed by 0, 6, 8, or 10 u16's of the MAC, then crypt */
|
|
};
|
|
|
|
#define HIFN_MAC_RES_MISCOMPARE 0x0002 /* compare failed */
|
|
#define HIFN_MAC_RES_SRC_NOTZERO 0x0001 /* source expired */
|
|
|
|
struct hifn_crypt_result {
|
|
volatile __le16 flags;
|
|
volatile __le16 reserved;
|
|
};
|
|
|
|
#define HIFN_CRYPT_RES_SRC_NOTZERO 0x0001 /* source expired */
|
|
|
|
#ifndef HIFN_POLL_FREQUENCY
|
|
#define HIFN_POLL_FREQUENCY 0x1
|
|
#endif
|
|
|
|
#ifndef HIFN_POLL_SCALAR
|
|
#define HIFN_POLL_SCALAR 0x0
|
|
#endif
|
|
|
|
#define HIFN_MAX_SEGLEN 0xffff /* maximum dma segment len */
|
|
#define HIFN_MAX_DMALEN 0x3ffff /* maximum dma length */
|
|
|
|
struct hifn_crypto_alg {
|
|
struct list_head entry;
|
|
struct crypto_alg alg;
|
|
struct hifn_device *dev;
|
|
};
|
|
|
|
#define ASYNC_SCATTERLIST_CACHE 16
|
|
|
|
#define ASYNC_FLAGS_MISALIGNED (1 << 0)
|
|
|
|
struct hifn_cipher_walk {
|
|
struct scatterlist cache[ASYNC_SCATTERLIST_CACHE];
|
|
u32 flags;
|
|
int num;
|
|
};
|
|
|
|
struct hifn_context {
|
|
u8 key[HIFN_MAX_CRYPT_KEY_LENGTH];
|
|
struct hifn_device *dev;
|
|
unsigned int keysize;
|
|
};
|
|
|
|
struct hifn_request_context {
|
|
u8 *iv;
|
|
unsigned int ivsize;
|
|
u8 op, type, mode, unused;
|
|
struct hifn_cipher_walk walk;
|
|
};
|
|
|
|
#define crypto_alg_to_hifn(a) container_of(a, struct hifn_crypto_alg, alg)
|
|
|
|
static inline u32 hifn_read_0(struct hifn_device *dev, u32 reg)
|
|
{
|
|
return readl(dev->bar[0] + reg);
|
|
}
|
|
|
|
static inline u32 hifn_read_1(struct hifn_device *dev, u32 reg)
|
|
{
|
|
return readl(dev->bar[1] + reg);
|
|
}
|
|
|
|
static inline void hifn_write_0(struct hifn_device *dev, u32 reg, u32 val)
|
|
{
|
|
writel((__force u32)cpu_to_le32(val), dev->bar[0] + reg);
|
|
}
|
|
|
|
static inline void hifn_write_1(struct hifn_device *dev, u32 reg, u32 val)
|
|
{
|
|
writel((__force u32)cpu_to_le32(val), dev->bar[1] + reg);
|
|
}
|
|
|
|
static void hifn_wait_puc(struct hifn_device *dev)
|
|
{
|
|
int i;
|
|
u32 ret;
|
|
|
|
for (i = 10000; i > 0; --i) {
|
|
ret = hifn_read_0(dev, HIFN_0_PUCTRL);
|
|
if (!(ret & HIFN_PUCTRL_RESET))
|
|
break;
|
|
|
|
udelay(1);
|
|
}
|
|
|
|
if (!i)
|
|
dev_err(&dev->pdev->dev, "Failed to reset PUC unit.\n");
|
|
}
|
|
|
|
static void hifn_reset_puc(struct hifn_device *dev)
|
|
{
|
|
hifn_write_0(dev, HIFN_0_PUCTRL, HIFN_PUCTRL_DMAENA);
|
|
hifn_wait_puc(dev);
|
|
}
|
|
|
|
static void hifn_stop_device(struct hifn_device *dev)
|
|
{
|
|
hifn_write_1(dev, HIFN_1_DMA_CSR,
|
|
HIFN_DMACSR_D_CTRL_DIS | HIFN_DMACSR_R_CTRL_DIS |
|
|
HIFN_DMACSR_S_CTRL_DIS | HIFN_DMACSR_C_CTRL_DIS);
|
|
hifn_write_0(dev, HIFN_0_PUIER, 0);
|
|
hifn_write_1(dev, HIFN_1_DMA_IER, 0);
|
|
}
|
|
|
|
static void hifn_reset_dma(struct hifn_device *dev, int full)
|
|
{
|
|
hifn_stop_device(dev);
|
|
|
|
/*
|
|
* Setting poll frequency and others to 0.
|
|
*/
|
|
hifn_write_1(dev, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
|
|
HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
|
|
mdelay(1);
|
|
|
|
/*
|
|
* Reset DMA.
|
|
*/
|
|
if (full) {
|
|
hifn_write_1(dev, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MODE);
|
|
mdelay(1);
|
|
} else {
|
|
hifn_write_1(dev, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MODE |
|
|
HIFN_DMACNFG_MSTRESET);
|
|
hifn_reset_puc(dev);
|
|
}
|
|
|
|
hifn_write_1(dev, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
|
|
HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
|
|
|
|
hifn_reset_puc(dev);
|
|
}
|
|
|
|
static u32 hifn_next_signature(u32 a, u_int cnt)
|
|
{
|
|
int i;
|
|
u32 v;
|
|
|
|
for (i = 0; i < cnt; i++) {
|
|
/* get the parity */
|
|
v = a & 0x80080125;
|
|
v ^= v >> 16;
|
|
v ^= v >> 8;
|
|
v ^= v >> 4;
|
|
v ^= v >> 2;
|
|
v ^= v >> 1;
|
|
|
|
a = (v & 1) ^ (a << 1);
|
|
}
|
|
|
|
return a;
|
|
}
|
|
|
|
static struct pci2id {
|
|
u_short pci_vendor;
|
|
u_short pci_prod;
|
|
char card_id[13];
|
|
} pci2id[] = {
|
|
{
|
|
PCI_VENDOR_ID_HIFN,
|
|
PCI_DEVICE_ID_HIFN_7955,
|
|
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00 }
|
|
},
|
|
{
|
|
PCI_VENDOR_ID_HIFN,
|
|
PCI_DEVICE_ID_HIFN_7956,
|
|
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00 }
|
|
}
|
|
};
|
|
|
|
#ifdef CONFIG_CRYPTO_DEV_HIFN_795X_RNG
|
|
static int hifn_rng_data_present(struct hwrng *rng, int wait)
|
|
{
|
|
struct hifn_device *dev = (struct hifn_device *)rng->priv;
|
|
s64 nsec;
|
|
|
|
nsec = ktime_to_ns(ktime_sub(ktime_get(), dev->rngtime));
|
|
nsec -= dev->rng_wait_time;
|
|
if (nsec <= 0)
|
|
return 1;
|
|
if (!wait)
|
|
return 0;
|
|
ndelay(nsec);
|
|
return 1;
|
|
}
|
|
|
|
static int hifn_rng_data_read(struct hwrng *rng, u32 *data)
|
|
{
|
|
struct hifn_device *dev = (struct hifn_device *)rng->priv;
|
|
|
|
*data = hifn_read_1(dev, HIFN_1_RNG_DATA);
|
|
dev->rngtime = ktime_get();
|
|
return 4;
|
|
}
|
|
|
|
static int hifn_register_rng(struct hifn_device *dev)
|
|
{
|
|
/*
|
|
* We must wait at least 256 Pk_clk cycles between two reads of the rng.
|
|
*/
|
|
dev->rng_wait_time = DIV_ROUND_UP_ULL(NSEC_PER_SEC,
|
|
dev->pk_clk_freq) * 256;
|
|
|
|
dev->rng.name = dev->name;
|
|
dev->rng.data_present = hifn_rng_data_present,
|
|
dev->rng.data_read = hifn_rng_data_read,
|
|
dev->rng.priv = (unsigned long)dev;
|
|
|
|
return hwrng_register(&dev->rng);
|
|
}
|
|
|
|
static void hifn_unregister_rng(struct hifn_device *dev)
|
|
{
|
|
hwrng_unregister(&dev->rng);
|
|
}
|
|
#else
|
|
#define hifn_register_rng(dev) 0
|
|
#define hifn_unregister_rng(dev)
|
|
#endif
|
|
|
|
static int hifn_init_pubrng(struct hifn_device *dev)
|
|
{
|
|
int i;
|
|
|
|
hifn_write_1(dev, HIFN_1_PUB_RESET, hifn_read_1(dev, HIFN_1_PUB_RESET) |
|
|
HIFN_PUBRST_RESET);
|
|
|
|
for (i = 100; i > 0; --i) {
|
|
mdelay(1);
|
|
|
|
if ((hifn_read_1(dev, HIFN_1_PUB_RESET) & HIFN_PUBRST_RESET) == 0)
|
|
break;
|
|
}
|
|
|
|
if (!i) {
|
|
dev_err(&dev->pdev->dev, "Failed to initialise public key engine.\n");
|
|
} else {
|
|
hifn_write_1(dev, HIFN_1_PUB_IEN, HIFN_PUBIEN_DONE);
|
|
dev->dmareg |= HIFN_DMAIER_PUBDONE;
|
|
hifn_write_1(dev, HIFN_1_DMA_IER, dev->dmareg);
|
|
|
|
dev_dbg(&dev->pdev->dev, "Public key engine has been successfully initialised.\n");
|
|
}
|
|
|
|
/* Enable RNG engine. */
|
|
|
|
hifn_write_1(dev, HIFN_1_RNG_CONFIG,
|
|
hifn_read_1(dev, HIFN_1_RNG_CONFIG) | HIFN_RNGCFG_ENA);
|
|
dev_dbg(&dev->pdev->dev, "RNG engine has been successfully initialised.\n");
|
|
|
|
#ifdef CONFIG_CRYPTO_DEV_HIFN_795X_RNG
|
|
/* First value must be discarded */
|
|
hifn_read_1(dev, HIFN_1_RNG_DATA);
|
|
dev->rngtime = ktime_get();
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
static int hifn_enable_crypto(struct hifn_device *dev)
|
|
{
|
|
u32 dmacfg, addr;
|
|
char *offtbl = NULL;
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(pci2id); i++) {
|
|
if (pci2id[i].pci_vendor == dev->pdev->vendor &&
|
|
pci2id[i].pci_prod == dev->pdev->device) {
|
|
offtbl = pci2id[i].card_id;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!offtbl) {
|
|
dev_err(&dev->pdev->dev, "Unknown card!\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
dmacfg = hifn_read_1(dev, HIFN_1_DMA_CNFG);
|
|
|
|
hifn_write_1(dev, HIFN_1_DMA_CNFG,
|
|
HIFN_DMACNFG_UNLOCK | HIFN_DMACNFG_MSTRESET |
|
|
HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
|
|
mdelay(1);
|
|
addr = hifn_read_1(dev, HIFN_1_UNLOCK_SECRET1);
|
|
mdelay(1);
|
|
hifn_write_1(dev, HIFN_1_UNLOCK_SECRET2, 0);
|
|
mdelay(1);
|
|
|
|
for (i = 0; i < 12; ++i) {
|
|
addr = hifn_next_signature(addr, offtbl[i] + 0x101);
|
|
hifn_write_1(dev, HIFN_1_UNLOCK_SECRET2, addr);
|
|
|
|
mdelay(1);
|
|
}
|
|
hifn_write_1(dev, HIFN_1_DMA_CNFG, dmacfg);
|
|
|
|
dev_dbg(&dev->pdev->dev, "%s %s.\n", dev->name, pci_name(dev->pdev));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void hifn_init_dma(struct hifn_device *dev)
|
|
{
|
|
struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
|
|
u32 dptr = dev->desc_dma;
|
|
int i;
|
|
|
|
for (i = 0; i < HIFN_D_CMD_RSIZE; ++i)
|
|
dma->cmdr[i].p = __cpu_to_le32(dptr +
|
|
offsetof(struct hifn_dma, command_bufs[i][0]));
|
|
for (i = 0; i < HIFN_D_RES_RSIZE; ++i)
|
|
dma->resr[i].p = __cpu_to_le32(dptr +
|
|
offsetof(struct hifn_dma, result_bufs[i][0]));
|
|
|
|
/* Setup LAST descriptors. */
|
|
dma->cmdr[HIFN_D_CMD_RSIZE].p = __cpu_to_le32(dptr +
|
|
offsetof(struct hifn_dma, cmdr[0]));
|
|
dma->srcr[HIFN_D_SRC_RSIZE].p = __cpu_to_le32(dptr +
|
|
offsetof(struct hifn_dma, srcr[0]));
|
|
dma->dstr[HIFN_D_DST_RSIZE].p = __cpu_to_le32(dptr +
|
|
offsetof(struct hifn_dma, dstr[0]));
|
|
dma->resr[HIFN_D_RES_RSIZE].p = __cpu_to_le32(dptr +
|
|
offsetof(struct hifn_dma, resr[0]));
|
|
|
|
dma->cmdu = dma->srcu = dma->dstu = dma->resu = 0;
|
|
dma->cmdi = dma->srci = dma->dsti = dma->resi = 0;
|
|
dma->cmdk = dma->srck = dma->dstk = dma->resk = 0;
|
|
}
|
|
|
|
/*
|
|
* Initialize the PLL. We need to know the frequency of the reference clock
|
|
* to calculate the optimal multiplier. For PCI we assume 66MHz, since that
|
|
* allows us to operate without the risk of overclocking the chip. If it
|
|
* actually uses 33MHz, the chip will operate at half the speed, this can be
|
|
* overridden by specifying the frequency as module parameter (pci33).
|
|
*
|
|
* Unfortunately the PCI clock is not very suitable since the HIFN needs a
|
|
* stable clock and the PCI clock frequency may vary, so the default is the
|
|
* external clock. There is no way to find out its frequency, we default to
|
|
* 66MHz since according to Mike Ham of HiFn, almost every board in existence
|
|
* has an external crystal populated at 66MHz.
|
|
*/
|
|
static void hifn_init_pll(struct hifn_device *dev)
|
|
{
|
|
unsigned int freq, m;
|
|
u32 pllcfg;
|
|
|
|
pllcfg = HIFN_1_PLL | HIFN_PLL_RESERVED_1;
|
|
|
|
if (strncmp(hifn_pll_ref, "ext", 3) == 0)
|
|
pllcfg |= HIFN_PLL_REF_CLK_PLL;
|
|
else
|
|
pllcfg |= HIFN_PLL_REF_CLK_HBI;
|
|
|
|
if (hifn_pll_ref[3] != '\0')
|
|
freq = simple_strtoul(hifn_pll_ref + 3, NULL, 10);
|
|
else {
|
|
freq = 66;
|
|
dev_info(&dev->pdev->dev, "assuming %uMHz clock speed, override with hifn_pll_ref=%.3s<frequency>\n",
|
|
freq, hifn_pll_ref);
|
|
}
|
|
|
|
m = HIFN_PLL_FCK_MAX / freq;
|
|
|
|
pllcfg |= (m / 2 - 1) << HIFN_PLL_ND_SHIFT;
|
|
if (m <= 8)
|
|
pllcfg |= HIFN_PLL_IS_1_8;
|
|
else
|
|
pllcfg |= HIFN_PLL_IS_9_12;
|
|
|
|
/* Select clock source and enable clock bypass */
|
|
hifn_write_1(dev, HIFN_1_PLL, pllcfg |
|
|
HIFN_PLL_PK_CLK_HBI | HIFN_PLL_PE_CLK_HBI | HIFN_PLL_BP);
|
|
|
|
/* Let the chip lock to the input clock */
|
|
mdelay(10);
|
|
|
|
/* Disable clock bypass */
|
|
hifn_write_1(dev, HIFN_1_PLL, pllcfg |
|
|
HIFN_PLL_PK_CLK_HBI | HIFN_PLL_PE_CLK_HBI);
|
|
|
|
/* Switch the engines to the PLL */
|
|
hifn_write_1(dev, HIFN_1_PLL, pllcfg |
|
|
HIFN_PLL_PK_CLK_PLL | HIFN_PLL_PE_CLK_PLL);
|
|
|
|
/*
|
|
* The Fpk_clk runs at half the total speed. Its frequency is needed to
|
|
* calculate the minimum time between two reads of the rng. Since 33MHz
|
|
* is actually 33.333... we overestimate the frequency here, resulting
|
|
* in slightly larger intervals.
|
|
*/
|
|
dev->pk_clk_freq = 1000000 * (freq + 1) * m / 2;
|
|
}
|
|
|
|
static void hifn_init_registers(struct hifn_device *dev)
|
|
{
|
|
u32 dptr = dev->desc_dma;
|
|
|
|
/* Initialization magic... */
|
|
hifn_write_0(dev, HIFN_0_PUCTRL, HIFN_PUCTRL_DMAENA);
|
|
hifn_write_0(dev, HIFN_0_FIFOCNFG, HIFN_FIFOCNFG_THRESHOLD);
|
|
hifn_write_0(dev, HIFN_0_PUIER, HIFN_PUIER_DSTOVER);
|
|
|
|
/* write all 4 ring address registers */
|
|
hifn_write_1(dev, HIFN_1_DMA_CRAR, dptr +
|
|
offsetof(struct hifn_dma, cmdr[0]));
|
|
hifn_write_1(dev, HIFN_1_DMA_SRAR, dptr +
|
|
offsetof(struct hifn_dma, srcr[0]));
|
|
hifn_write_1(dev, HIFN_1_DMA_DRAR, dptr +
|
|
offsetof(struct hifn_dma, dstr[0]));
|
|
hifn_write_1(dev, HIFN_1_DMA_RRAR, dptr +
|
|
offsetof(struct hifn_dma, resr[0]));
|
|
|
|
mdelay(2);
|
|
#if 0
|
|
hifn_write_1(dev, HIFN_1_DMA_CSR,
|
|
HIFN_DMACSR_D_CTRL_DIS | HIFN_DMACSR_R_CTRL_DIS |
|
|
HIFN_DMACSR_S_CTRL_DIS | HIFN_DMACSR_C_CTRL_DIS |
|
|
HIFN_DMACSR_D_ABORT | HIFN_DMACSR_D_DONE | HIFN_DMACSR_D_LAST |
|
|
HIFN_DMACSR_D_WAIT | HIFN_DMACSR_D_OVER |
|
|
HIFN_DMACSR_R_ABORT | HIFN_DMACSR_R_DONE | HIFN_DMACSR_R_LAST |
|
|
HIFN_DMACSR_R_WAIT | HIFN_DMACSR_R_OVER |
|
|
HIFN_DMACSR_S_ABORT | HIFN_DMACSR_S_DONE | HIFN_DMACSR_S_LAST |
|
|
HIFN_DMACSR_S_WAIT |
|
|
HIFN_DMACSR_C_ABORT | HIFN_DMACSR_C_DONE | HIFN_DMACSR_C_LAST |
|
|
HIFN_DMACSR_C_WAIT |
|
|
HIFN_DMACSR_ENGINE |
|
|
HIFN_DMACSR_PUBDONE);
|
|
#else
|
|
hifn_write_1(dev, HIFN_1_DMA_CSR,
|
|
HIFN_DMACSR_C_CTRL_ENA | HIFN_DMACSR_S_CTRL_ENA |
|
|
HIFN_DMACSR_D_CTRL_ENA | HIFN_DMACSR_R_CTRL_ENA |
|
|
HIFN_DMACSR_D_ABORT | HIFN_DMACSR_D_DONE | HIFN_DMACSR_D_LAST |
|
|
HIFN_DMACSR_D_WAIT | HIFN_DMACSR_D_OVER |
|
|
HIFN_DMACSR_R_ABORT | HIFN_DMACSR_R_DONE | HIFN_DMACSR_R_LAST |
|
|
HIFN_DMACSR_R_WAIT | HIFN_DMACSR_R_OVER |
|
|
HIFN_DMACSR_S_ABORT | HIFN_DMACSR_S_DONE | HIFN_DMACSR_S_LAST |
|
|
HIFN_DMACSR_S_WAIT |
|
|
HIFN_DMACSR_C_ABORT | HIFN_DMACSR_C_DONE | HIFN_DMACSR_C_LAST |
|
|
HIFN_DMACSR_C_WAIT |
|
|
HIFN_DMACSR_ENGINE |
|
|
HIFN_DMACSR_PUBDONE);
|
|
#endif
|
|
hifn_read_1(dev, HIFN_1_DMA_CSR);
|
|
|
|
dev->dmareg |= HIFN_DMAIER_R_DONE | HIFN_DMAIER_C_ABORT |
|
|
HIFN_DMAIER_D_OVER | HIFN_DMAIER_R_OVER |
|
|
HIFN_DMAIER_S_ABORT | HIFN_DMAIER_D_ABORT | HIFN_DMAIER_R_ABORT |
|
|
HIFN_DMAIER_ENGINE;
|
|
dev->dmareg &= ~HIFN_DMAIER_C_WAIT;
|
|
|
|
hifn_write_1(dev, HIFN_1_DMA_IER, dev->dmareg);
|
|
hifn_read_1(dev, HIFN_1_DMA_IER);
|
|
#if 0
|
|
hifn_write_0(dev, HIFN_0_PUCNFG, HIFN_PUCNFG_ENCCNFG |
|
|
HIFN_PUCNFG_DRFR_128 | HIFN_PUCNFG_TCALLPHASES |
|
|
HIFN_PUCNFG_TCDRVTOTEM | HIFN_PUCNFG_BUS32 |
|
|
HIFN_PUCNFG_DRAM);
|
|
#else
|
|
hifn_write_0(dev, HIFN_0_PUCNFG, 0x10342);
|
|
#endif
|
|
hifn_init_pll(dev);
|
|
|
|
hifn_write_0(dev, HIFN_0_PUISR, HIFN_PUISR_DSTOVER);
|
|
hifn_write_1(dev, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
|
|
HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE | HIFN_DMACNFG_LAST |
|
|
((HIFN_POLL_FREQUENCY << 16 ) & HIFN_DMACNFG_POLLFREQ) |
|
|
((HIFN_POLL_SCALAR << 8) & HIFN_DMACNFG_POLLINVAL));
|
|
}
|
|
|
|
static int hifn_setup_base_command(struct hifn_device *dev, u8 *buf,
|
|
unsigned dlen, unsigned slen, u16 mask, u8 snum)
|
|
{
|
|
struct hifn_base_command *base_cmd;
|
|
u8 *buf_pos = buf;
|
|
|
|
base_cmd = (struct hifn_base_command *)buf_pos;
|
|
base_cmd->masks = __cpu_to_le16(mask);
|
|
base_cmd->total_source_count =
|
|
__cpu_to_le16(slen & HIFN_BASE_CMD_LENMASK_LO);
|
|
base_cmd->total_dest_count =
|
|
__cpu_to_le16(dlen & HIFN_BASE_CMD_LENMASK_LO);
|
|
|
|
dlen >>= 16;
|
|
slen >>= 16;
|
|
base_cmd->session_num = __cpu_to_le16(snum |
|
|
((slen << HIFN_BASE_CMD_SRCLEN_S) & HIFN_BASE_CMD_SRCLEN_M) |
|
|
((dlen << HIFN_BASE_CMD_DSTLEN_S) & HIFN_BASE_CMD_DSTLEN_M));
|
|
|
|
return sizeof(struct hifn_base_command);
|
|
}
|
|
|
|
static int hifn_setup_crypto_command(struct hifn_device *dev,
|
|
u8 *buf, unsigned dlen, unsigned slen,
|
|
u8 *key, int keylen, u8 *iv, int ivsize, u16 mode)
|
|
{
|
|
struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
|
|
struct hifn_crypt_command *cry_cmd;
|
|
u8 *buf_pos = buf;
|
|
u16 cmd_len;
|
|
|
|
cry_cmd = (struct hifn_crypt_command *)buf_pos;
|
|
|
|
cry_cmd->source_count = __cpu_to_le16(dlen & 0xffff);
|
|
dlen >>= 16;
|
|
cry_cmd->masks = __cpu_to_le16(mode |
|
|
((dlen << HIFN_CRYPT_CMD_SRCLEN_S) &
|
|
HIFN_CRYPT_CMD_SRCLEN_M));
|
|
cry_cmd->header_skip = 0;
|
|
cry_cmd->reserved = 0;
|
|
|
|
buf_pos += sizeof(struct hifn_crypt_command);
|
|
|
|
dma->cmdu++;
|
|
if (dma->cmdu > 1) {
|
|
dev->dmareg |= HIFN_DMAIER_C_WAIT;
|
|
hifn_write_1(dev, HIFN_1_DMA_IER, dev->dmareg);
|
|
}
|
|
|
|
if (keylen) {
|
|
memcpy(buf_pos, key, keylen);
|
|
buf_pos += keylen;
|
|
}
|
|
if (ivsize) {
|
|
memcpy(buf_pos, iv, ivsize);
|
|
buf_pos += ivsize;
|
|
}
|
|
|
|
cmd_len = buf_pos - buf;
|
|
|
|
return cmd_len;
|
|
}
|
|
|
|
static int hifn_setup_cmd_desc(struct hifn_device *dev,
|
|
struct hifn_context *ctx, struct hifn_request_context *rctx,
|
|
void *priv, unsigned int nbytes)
|
|
{
|
|
struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
|
|
int cmd_len, sa_idx;
|
|
u8 *buf, *buf_pos;
|
|
u16 mask;
|
|
|
|
sa_idx = dma->cmdi;
|
|
buf_pos = buf = dma->command_bufs[dma->cmdi];
|
|
|
|
mask = 0;
|
|
switch (rctx->op) {
|
|
case ACRYPTO_OP_DECRYPT:
|
|
mask = HIFN_BASE_CMD_CRYPT | HIFN_BASE_CMD_DECODE;
|
|
break;
|
|
case ACRYPTO_OP_ENCRYPT:
|
|
mask = HIFN_BASE_CMD_CRYPT;
|
|
break;
|
|
case ACRYPTO_OP_HMAC:
|
|
mask = HIFN_BASE_CMD_MAC;
|
|
break;
|
|
default:
|
|
goto err_out;
|
|
}
|
|
|
|
buf_pos += hifn_setup_base_command(dev, buf_pos, nbytes,
|
|
nbytes, mask, dev->snum);
|
|
|
|
if (rctx->op == ACRYPTO_OP_ENCRYPT || rctx->op == ACRYPTO_OP_DECRYPT) {
|
|
u16 md = 0;
|
|
|
|
if (ctx->keysize)
|
|
md |= HIFN_CRYPT_CMD_NEW_KEY;
|
|
if (rctx->iv && rctx->mode != ACRYPTO_MODE_ECB)
|
|
md |= HIFN_CRYPT_CMD_NEW_IV;
|
|
|
|
switch (rctx->mode) {
|
|
case ACRYPTO_MODE_ECB:
|
|
md |= HIFN_CRYPT_CMD_MODE_ECB;
|
|
break;
|
|
case ACRYPTO_MODE_CBC:
|
|
md |= HIFN_CRYPT_CMD_MODE_CBC;
|
|
break;
|
|
case ACRYPTO_MODE_CFB:
|
|
md |= HIFN_CRYPT_CMD_MODE_CFB;
|
|
break;
|
|
case ACRYPTO_MODE_OFB:
|
|
md |= HIFN_CRYPT_CMD_MODE_OFB;
|
|
break;
|
|
default:
|
|
goto err_out;
|
|
}
|
|
|
|
switch (rctx->type) {
|
|
case ACRYPTO_TYPE_AES_128:
|
|
if (ctx->keysize != 16)
|
|
goto err_out;
|
|
md |= HIFN_CRYPT_CMD_KSZ_128 |
|
|
HIFN_CRYPT_CMD_ALG_AES;
|
|
break;
|
|
case ACRYPTO_TYPE_AES_192:
|
|
if (ctx->keysize != 24)
|
|
goto err_out;
|
|
md |= HIFN_CRYPT_CMD_KSZ_192 |
|
|
HIFN_CRYPT_CMD_ALG_AES;
|
|
break;
|
|
case ACRYPTO_TYPE_AES_256:
|
|
if (ctx->keysize != 32)
|
|
goto err_out;
|
|
md |= HIFN_CRYPT_CMD_KSZ_256 |
|
|
HIFN_CRYPT_CMD_ALG_AES;
|
|
break;
|
|
case ACRYPTO_TYPE_3DES:
|
|
if (ctx->keysize != 24)
|
|
goto err_out;
|
|
md |= HIFN_CRYPT_CMD_ALG_3DES;
|
|
break;
|
|
case ACRYPTO_TYPE_DES:
|
|
if (ctx->keysize != 8)
|
|
goto err_out;
|
|
md |= HIFN_CRYPT_CMD_ALG_DES;
|
|
break;
|
|
default:
|
|
goto err_out;
|
|
}
|
|
|
|
buf_pos += hifn_setup_crypto_command(dev, buf_pos,
|
|
nbytes, nbytes, ctx->key, ctx->keysize,
|
|
rctx->iv, rctx->ivsize, md);
|
|
}
|
|
|
|
dev->sa[sa_idx] = priv;
|
|
dev->started++;
|
|
|
|
cmd_len = buf_pos - buf;
|
|
dma->cmdr[dma->cmdi].l = __cpu_to_le32(cmd_len | HIFN_D_VALID |
|
|
HIFN_D_LAST | HIFN_D_MASKDONEIRQ);
|
|
|
|
if (++dma->cmdi == HIFN_D_CMD_RSIZE) {
|
|
dma->cmdr[dma->cmdi].l = __cpu_to_le32(
|
|
HIFN_D_VALID | HIFN_D_LAST |
|
|
HIFN_D_MASKDONEIRQ | HIFN_D_JUMP);
|
|
dma->cmdi = 0;
|
|
} else {
|
|
dma->cmdr[dma->cmdi - 1].l |= __cpu_to_le32(HIFN_D_VALID);
|
|
}
|
|
|
|
if (!(dev->flags & HIFN_FLAG_CMD_BUSY)) {
|
|
hifn_write_1(dev, HIFN_1_DMA_CSR, HIFN_DMACSR_C_CTRL_ENA);
|
|
dev->flags |= HIFN_FLAG_CMD_BUSY;
|
|
}
|
|
return 0;
|
|
|
|
err_out:
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int hifn_setup_src_desc(struct hifn_device *dev, struct page *page,
|
|
unsigned int offset, unsigned int size, int last)
|
|
{
|
|
struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
|
|
int idx;
|
|
dma_addr_t addr;
|
|
|
|
addr = pci_map_page(dev->pdev, page, offset, size, PCI_DMA_TODEVICE);
|
|
|
|
idx = dma->srci;
|
|
|
|
dma->srcr[idx].p = __cpu_to_le32(addr);
|
|
dma->srcr[idx].l = __cpu_to_le32(size | HIFN_D_VALID |
|
|
HIFN_D_MASKDONEIRQ | (last ? HIFN_D_LAST : 0));
|
|
|
|
if (++idx == HIFN_D_SRC_RSIZE) {
|
|
dma->srcr[idx].l = __cpu_to_le32(HIFN_D_VALID |
|
|
HIFN_D_JUMP | HIFN_D_MASKDONEIRQ |
|
|
(last ? HIFN_D_LAST : 0));
|
|
idx = 0;
|
|
}
|
|
|
|
dma->srci = idx;
|
|
dma->srcu++;
|
|
|
|
if (!(dev->flags & HIFN_FLAG_SRC_BUSY)) {
|
|
hifn_write_1(dev, HIFN_1_DMA_CSR, HIFN_DMACSR_S_CTRL_ENA);
|
|
dev->flags |= HIFN_FLAG_SRC_BUSY;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
static void hifn_setup_res_desc(struct hifn_device *dev)
|
|
{
|
|
struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
|
|
|
|
dma->resr[dma->resi].l = __cpu_to_le32(HIFN_USED_RESULT |
|
|
HIFN_D_VALID | HIFN_D_LAST);
|
|
/*
|
|
* dma->resr[dma->resi].l = __cpu_to_le32(HIFN_MAX_RESULT | HIFN_D_VALID |
|
|
* HIFN_D_LAST);
|
|
*/
|
|
|
|
if (++dma->resi == HIFN_D_RES_RSIZE) {
|
|
dma->resr[HIFN_D_RES_RSIZE].l = __cpu_to_le32(HIFN_D_VALID |
|
|
HIFN_D_JUMP | HIFN_D_MASKDONEIRQ | HIFN_D_LAST);
|
|
dma->resi = 0;
|
|
}
|
|
|
|
dma->resu++;
|
|
|
|
if (!(dev->flags & HIFN_FLAG_RES_BUSY)) {
|
|
hifn_write_1(dev, HIFN_1_DMA_CSR, HIFN_DMACSR_R_CTRL_ENA);
|
|
dev->flags |= HIFN_FLAG_RES_BUSY;
|
|
}
|
|
}
|
|
|
|
static void hifn_setup_dst_desc(struct hifn_device *dev, struct page *page,
|
|
unsigned offset, unsigned size, int last)
|
|
{
|
|
struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
|
|
int idx;
|
|
dma_addr_t addr;
|
|
|
|
addr = pci_map_page(dev->pdev, page, offset, size, PCI_DMA_FROMDEVICE);
|
|
|
|
idx = dma->dsti;
|
|
dma->dstr[idx].p = __cpu_to_le32(addr);
|
|
dma->dstr[idx].l = __cpu_to_le32(size | HIFN_D_VALID |
|
|
HIFN_D_MASKDONEIRQ | (last ? HIFN_D_LAST : 0));
|
|
|
|
if (++idx == HIFN_D_DST_RSIZE) {
|
|
dma->dstr[idx].l = __cpu_to_le32(HIFN_D_VALID |
|
|
HIFN_D_JUMP | HIFN_D_MASKDONEIRQ |
|
|
(last ? HIFN_D_LAST : 0));
|
|
idx = 0;
|
|
}
|
|
dma->dsti = idx;
|
|
dma->dstu++;
|
|
|
|
if (!(dev->flags & HIFN_FLAG_DST_BUSY)) {
|
|
hifn_write_1(dev, HIFN_1_DMA_CSR, HIFN_DMACSR_D_CTRL_ENA);
|
|
dev->flags |= HIFN_FLAG_DST_BUSY;
|
|
}
|
|
}
|
|
|
|
static int hifn_setup_dma(struct hifn_device *dev,
|
|
struct hifn_context *ctx, struct hifn_request_context *rctx,
|
|
struct scatterlist *src, struct scatterlist *dst,
|
|
unsigned int nbytes, void *priv)
|
|
{
|
|
struct scatterlist *t;
|
|
struct page *spage, *dpage;
|
|
unsigned int soff, doff;
|
|
unsigned int n, len;
|
|
|
|
n = nbytes;
|
|
while (n) {
|
|
spage = sg_page(src);
|
|
soff = src->offset;
|
|
len = min(src->length, n);
|
|
|
|
hifn_setup_src_desc(dev, spage, soff, len, n - len == 0);
|
|
|
|
src++;
|
|
n -= len;
|
|
}
|
|
|
|
t = &rctx->walk.cache[0];
|
|
n = nbytes;
|
|
while (n) {
|
|
if (t->length && rctx->walk.flags & ASYNC_FLAGS_MISALIGNED) {
|
|
BUG_ON(!sg_page(t));
|
|
dpage = sg_page(t);
|
|
doff = 0;
|
|
len = t->length;
|
|
} else {
|
|
BUG_ON(!sg_page(dst));
|
|
dpage = sg_page(dst);
|
|
doff = dst->offset;
|
|
len = dst->length;
|
|
}
|
|
len = min(len, n);
|
|
|
|
hifn_setup_dst_desc(dev, dpage, doff, len, n - len == 0);
|
|
|
|
dst++;
|
|
t++;
|
|
n -= len;
|
|
}
|
|
|
|
hifn_setup_cmd_desc(dev, ctx, rctx, priv, nbytes);
|
|
hifn_setup_res_desc(dev);
|
|
return 0;
|
|
}
|
|
|
|
static int hifn_cipher_walk_init(struct hifn_cipher_walk *w,
|
|
int num, gfp_t gfp_flags)
|
|
{
|
|
int i;
|
|
|
|
num = min(ASYNC_SCATTERLIST_CACHE, num);
|
|
sg_init_table(w->cache, num);
|
|
|
|
w->num = 0;
|
|
for (i = 0; i < num; ++i) {
|
|
struct page *page = alloc_page(gfp_flags);
|
|
struct scatterlist *s;
|
|
|
|
if (!page)
|
|
break;
|
|
|
|
s = &w->cache[i];
|
|
|
|
sg_set_page(s, page, PAGE_SIZE, 0);
|
|
w->num++;
|
|
}
|
|
|
|
return i;
|
|
}
|
|
|
|
static void hifn_cipher_walk_exit(struct hifn_cipher_walk *w)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < w->num; ++i) {
|
|
struct scatterlist *s = &w->cache[i];
|
|
|
|
__free_page(sg_page(s));
|
|
|
|
s->length = 0;
|
|
}
|
|
|
|
w->num = 0;
|
|
}
|
|
|
|
static int ablkcipher_add(unsigned int *drestp, struct scatterlist *dst,
|
|
unsigned int size, unsigned int *nbytesp)
|
|
{
|
|
unsigned int copy, drest = *drestp, nbytes = *nbytesp;
|
|
int idx = 0;
|
|
|
|
if (drest < size || size > nbytes)
|
|
return -EINVAL;
|
|
|
|
while (size) {
|
|
copy = min3(drest, size, dst->length);
|
|
|
|
size -= copy;
|
|
drest -= copy;
|
|
nbytes -= copy;
|
|
|
|
pr_debug("%s: copy: %u, size: %u, drest: %u, nbytes: %u.\n",
|
|
__func__, copy, size, drest, nbytes);
|
|
|
|
dst++;
|
|
idx++;
|
|
}
|
|
|
|
*nbytesp = nbytes;
|
|
*drestp = drest;
|
|
|
|
return idx;
|
|
}
|
|
|
|
static int hifn_cipher_walk(struct ablkcipher_request *req,
|
|
struct hifn_cipher_walk *w)
|
|
{
|
|
struct scatterlist *dst, *t;
|
|
unsigned int nbytes = req->nbytes, offset, copy, diff;
|
|
int idx, tidx, err;
|
|
|
|
tidx = idx = 0;
|
|
offset = 0;
|
|
while (nbytes) {
|
|
if (idx >= w->num && (w->flags & ASYNC_FLAGS_MISALIGNED))
|
|
return -EINVAL;
|
|
|
|
dst = &req->dst[idx];
|
|
|
|
pr_debug("\n%s: dlen: %u, doff: %u, offset: %u, nbytes: %u.\n",
|
|
__func__, dst->length, dst->offset, offset, nbytes);
|
|
|
|
if (!IS_ALIGNED(dst->offset, HIFN_D_DST_DALIGN) ||
|
|
!IS_ALIGNED(dst->length, HIFN_D_DST_DALIGN) ||
|
|
offset) {
|
|
unsigned slen = min(dst->length - offset, nbytes);
|
|
unsigned dlen = PAGE_SIZE;
|
|
|
|
t = &w->cache[idx];
|
|
|
|
err = ablkcipher_add(&dlen, dst, slen, &nbytes);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
idx += err;
|
|
|
|
copy = slen & ~(HIFN_D_DST_DALIGN - 1);
|
|
diff = slen & (HIFN_D_DST_DALIGN - 1);
|
|
|
|
if (dlen < nbytes) {
|
|
/*
|
|
* Destination page does not have enough space
|
|
* to put there additional blocksized chunk,
|
|
* so we mark that page as containing only
|
|
* blocksize aligned chunks:
|
|
* t->length = (slen & ~(HIFN_D_DST_DALIGN - 1));
|
|
* and increase number of bytes to be processed
|
|
* in next chunk:
|
|
* nbytes += diff;
|
|
*/
|
|
nbytes += diff;
|
|
|
|
/*
|
|
* Temporary of course...
|
|
* Kick author if you will catch this one.
|
|
*/
|
|
pr_err("%s: dlen: %u, nbytes: %u, slen: %u, offset: %u.\n",
|
|
__func__, dlen, nbytes, slen, offset);
|
|
pr_err("%s: please contact author to fix this "
|
|
"issue, generally you should not catch "
|
|
"this path under any condition but who "
|
|
"knows how did you use crypto code.\n"
|
|
"Thank you.\n", __func__);
|
|
BUG();
|
|
} else {
|
|
copy += diff + nbytes;
|
|
|
|
dst = &req->dst[idx];
|
|
|
|
err = ablkcipher_add(&dlen, dst, nbytes, &nbytes);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
idx += err;
|
|
}
|
|
|
|
t->length = copy;
|
|
t->offset = offset;
|
|
} else {
|
|
nbytes -= min(dst->length, nbytes);
|
|
idx++;
|
|
}
|
|
|
|
tidx++;
|
|
}
|
|
|
|
return tidx;
|
|
}
|
|
|
|
static int hifn_setup_session(struct ablkcipher_request *req)
|
|
{
|
|
struct hifn_context *ctx = crypto_tfm_ctx(req->base.tfm);
|
|
struct hifn_request_context *rctx = ablkcipher_request_ctx(req);
|
|
struct hifn_device *dev = ctx->dev;
|
|
unsigned long dlen, flags;
|
|
unsigned int nbytes = req->nbytes, idx = 0;
|
|
int err = -EINVAL, sg_num;
|
|
struct scatterlist *dst;
|
|
|
|
if (rctx->iv && !rctx->ivsize && rctx->mode != ACRYPTO_MODE_ECB)
|
|
goto err_out_exit;
|
|
|
|
rctx->walk.flags = 0;
|
|
|
|
while (nbytes) {
|
|
dst = &req->dst[idx];
|
|
dlen = min(dst->length, nbytes);
|
|
|
|
if (!IS_ALIGNED(dst->offset, HIFN_D_DST_DALIGN) ||
|
|
!IS_ALIGNED(dlen, HIFN_D_DST_DALIGN))
|
|
rctx->walk.flags |= ASYNC_FLAGS_MISALIGNED;
|
|
|
|
nbytes -= dlen;
|
|
idx++;
|
|
}
|
|
|
|
if (rctx->walk.flags & ASYNC_FLAGS_MISALIGNED) {
|
|
err = hifn_cipher_walk_init(&rctx->walk, idx, GFP_ATOMIC);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
sg_num = hifn_cipher_walk(req, &rctx->walk);
|
|
if (sg_num < 0) {
|
|
err = sg_num;
|
|
goto err_out_exit;
|
|
}
|
|
|
|
spin_lock_irqsave(&dev->lock, flags);
|
|
if (dev->started + sg_num > HIFN_QUEUE_LENGTH) {
|
|
err = -EAGAIN;
|
|
goto err_out;
|
|
}
|
|
|
|
err = hifn_setup_dma(dev, ctx, rctx, req->src, req->dst, req->nbytes, req);
|
|
if (err)
|
|
goto err_out;
|
|
|
|
dev->snum++;
|
|
|
|
dev->active = HIFN_DEFAULT_ACTIVE_NUM;
|
|
spin_unlock_irqrestore(&dev->lock, flags);
|
|
|
|
return 0;
|
|
|
|
err_out:
|
|
spin_unlock_irqrestore(&dev->lock, flags);
|
|
err_out_exit:
|
|
if (err) {
|
|
dev_info(&dev->pdev->dev, "iv: %p [%d], key: %p [%d], mode: %u, op: %u, "
|
|
"type: %u, err: %d.\n",
|
|
rctx->iv, rctx->ivsize,
|
|
ctx->key, ctx->keysize,
|
|
rctx->mode, rctx->op, rctx->type, err);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int hifn_start_device(struct hifn_device *dev)
|
|
{
|
|
int err;
|
|
|
|
dev->started = dev->active = 0;
|
|
hifn_reset_dma(dev, 1);
|
|
|
|
err = hifn_enable_crypto(dev);
|
|
if (err)
|
|
return err;
|
|
|
|
hifn_reset_puc(dev);
|
|
|
|
hifn_init_dma(dev);
|
|
|
|
hifn_init_registers(dev);
|
|
|
|
hifn_init_pubrng(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ablkcipher_get(void *saddr, unsigned int *srestp, unsigned int offset,
|
|
struct scatterlist *dst, unsigned int size, unsigned int *nbytesp)
|
|
{
|
|
unsigned int srest = *srestp, nbytes = *nbytesp, copy;
|
|
void *daddr;
|
|
int idx = 0;
|
|
|
|
if (srest < size || size > nbytes)
|
|
return -EINVAL;
|
|
|
|
while (size) {
|
|
copy = min3(srest, dst->length, size);
|
|
|
|
daddr = kmap_atomic(sg_page(dst));
|
|
memcpy(daddr + dst->offset + offset, saddr, copy);
|
|
kunmap_atomic(daddr);
|
|
|
|
nbytes -= copy;
|
|
size -= copy;
|
|
srest -= copy;
|
|
saddr += copy;
|
|
offset = 0;
|
|
|
|
pr_debug("%s: copy: %u, size: %u, srest: %u, nbytes: %u.\n",
|
|
__func__, copy, size, srest, nbytes);
|
|
|
|
dst++;
|
|
idx++;
|
|
}
|
|
|
|
*nbytesp = nbytes;
|
|
*srestp = srest;
|
|
|
|
return idx;
|
|
}
|
|
|
|
static inline void hifn_complete_sa(struct hifn_device *dev, int i)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&dev->lock, flags);
|
|
dev->sa[i] = NULL;
|
|
dev->started--;
|
|
if (dev->started < 0)
|
|
dev_info(&dev->pdev->dev, "%s: started: %d.\n", __func__,
|
|
dev->started);
|
|
spin_unlock_irqrestore(&dev->lock, flags);
|
|
BUG_ON(dev->started < 0);
|
|
}
|
|
|
|
static void hifn_process_ready(struct ablkcipher_request *req, int error)
|
|
{
|
|
struct hifn_request_context *rctx = ablkcipher_request_ctx(req);
|
|
|
|
if (rctx->walk.flags & ASYNC_FLAGS_MISALIGNED) {
|
|
unsigned int nbytes = req->nbytes;
|
|
int idx = 0, err;
|
|
struct scatterlist *dst, *t;
|
|
void *saddr;
|
|
|
|
while (nbytes) {
|
|
t = &rctx->walk.cache[idx];
|
|
dst = &req->dst[idx];
|
|
|
|
pr_debug("\n%s: sg_page(t): %p, t->length: %u, "
|
|
"sg_page(dst): %p, dst->length: %u, "
|
|
"nbytes: %u.\n",
|
|
__func__, sg_page(t), t->length,
|
|
sg_page(dst), dst->length, nbytes);
|
|
|
|
if (!t->length) {
|
|
nbytes -= min(dst->length, nbytes);
|
|
idx++;
|
|
continue;
|
|
}
|
|
|
|
saddr = kmap_atomic(sg_page(t));
|
|
|
|
err = ablkcipher_get(saddr, &t->length, t->offset,
|
|
dst, nbytes, &nbytes);
|
|
if (err < 0) {
|
|
kunmap_atomic(saddr);
|
|
break;
|
|
}
|
|
|
|
idx += err;
|
|
kunmap_atomic(saddr);
|
|
}
|
|
|
|
hifn_cipher_walk_exit(&rctx->walk);
|
|
}
|
|
|
|
req->base.complete(&req->base, error);
|
|
}
|
|
|
|
static void hifn_clear_rings(struct hifn_device *dev, int error)
|
|
{
|
|
struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
|
|
int i, u;
|
|
|
|
dev_dbg(&dev->pdev->dev, "ring cleanup 1: i: %d.%d.%d.%d, u: %d.%d.%d.%d, "
|
|
"k: %d.%d.%d.%d.\n",
|
|
dma->cmdi, dma->srci, dma->dsti, dma->resi,
|
|
dma->cmdu, dma->srcu, dma->dstu, dma->resu,
|
|
dma->cmdk, dma->srck, dma->dstk, dma->resk);
|
|
|
|
i = dma->resk; u = dma->resu;
|
|
while (u != 0) {
|
|
if (dma->resr[i].l & __cpu_to_le32(HIFN_D_VALID))
|
|
break;
|
|
|
|
if (dev->sa[i]) {
|
|
dev->success++;
|
|
dev->reset = 0;
|
|
hifn_process_ready(dev->sa[i], error);
|
|
hifn_complete_sa(dev, i);
|
|
}
|
|
|
|
if (++i == HIFN_D_RES_RSIZE)
|
|
i = 0;
|
|
u--;
|
|
}
|
|
dma->resk = i; dma->resu = u;
|
|
|
|
i = dma->srck; u = dma->srcu;
|
|
while (u != 0) {
|
|
if (dma->srcr[i].l & __cpu_to_le32(HIFN_D_VALID))
|
|
break;
|
|
if (++i == HIFN_D_SRC_RSIZE)
|
|
i = 0;
|
|
u--;
|
|
}
|
|
dma->srck = i; dma->srcu = u;
|
|
|
|
i = dma->cmdk; u = dma->cmdu;
|
|
while (u != 0) {
|
|
if (dma->cmdr[i].l & __cpu_to_le32(HIFN_D_VALID))
|
|
break;
|
|
if (++i == HIFN_D_CMD_RSIZE)
|
|
i = 0;
|
|
u--;
|
|
}
|
|
dma->cmdk = i; dma->cmdu = u;
|
|
|
|
i = dma->dstk; u = dma->dstu;
|
|
while (u != 0) {
|
|
if (dma->dstr[i].l & __cpu_to_le32(HIFN_D_VALID))
|
|
break;
|
|
if (++i == HIFN_D_DST_RSIZE)
|
|
i = 0;
|
|
u--;
|
|
}
|
|
dma->dstk = i; dma->dstu = u;
|
|
|
|
dev_dbg(&dev->pdev->dev, "ring cleanup 2: i: %d.%d.%d.%d, u: %d.%d.%d.%d, "
|
|
"k: %d.%d.%d.%d.\n",
|
|
dma->cmdi, dma->srci, dma->dsti, dma->resi,
|
|
dma->cmdu, dma->srcu, dma->dstu, dma->resu,
|
|
dma->cmdk, dma->srck, dma->dstk, dma->resk);
|
|
}
|
|
|
|
static void hifn_work(struct work_struct *work)
|
|
{
|
|
struct delayed_work *dw = to_delayed_work(work);
|
|
struct hifn_device *dev = container_of(dw, struct hifn_device, work);
|
|
unsigned long flags;
|
|
int reset = 0;
|
|
u32 r = 0;
|
|
|
|
spin_lock_irqsave(&dev->lock, flags);
|
|
if (dev->active == 0) {
|
|
struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
|
|
|
|
if (dma->cmdu == 0 && (dev->flags & HIFN_FLAG_CMD_BUSY)) {
|
|
dev->flags &= ~HIFN_FLAG_CMD_BUSY;
|
|
r |= HIFN_DMACSR_C_CTRL_DIS;
|
|
}
|
|
if (dma->srcu == 0 && (dev->flags & HIFN_FLAG_SRC_BUSY)) {
|
|
dev->flags &= ~HIFN_FLAG_SRC_BUSY;
|
|
r |= HIFN_DMACSR_S_CTRL_DIS;
|
|
}
|
|
if (dma->dstu == 0 && (dev->flags & HIFN_FLAG_DST_BUSY)) {
|
|
dev->flags &= ~HIFN_FLAG_DST_BUSY;
|
|
r |= HIFN_DMACSR_D_CTRL_DIS;
|
|
}
|
|
if (dma->resu == 0 && (dev->flags & HIFN_FLAG_RES_BUSY)) {
|
|
dev->flags &= ~HIFN_FLAG_RES_BUSY;
|
|
r |= HIFN_DMACSR_R_CTRL_DIS;
|
|
}
|
|
if (r)
|
|
hifn_write_1(dev, HIFN_1_DMA_CSR, r);
|
|
} else
|
|
dev->active--;
|
|
|
|
if ((dev->prev_success == dev->success) && dev->started)
|
|
reset = 1;
|
|
dev->prev_success = dev->success;
|
|
spin_unlock_irqrestore(&dev->lock, flags);
|
|
|
|
if (reset) {
|
|
if (++dev->reset >= 5) {
|
|
int i;
|
|
struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
|
|
|
|
dev_info(&dev->pdev->dev,
|
|
"r: %08x, active: %d, started: %d, "
|
|
"success: %lu: qlen: %u/%u, reset: %d.\n",
|
|
r, dev->active, dev->started,
|
|
dev->success, dev->queue.qlen, dev->queue.max_qlen,
|
|
reset);
|
|
|
|
dev_info(&dev->pdev->dev, "%s: res: ", __func__);
|
|
for (i = 0; i < HIFN_D_RES_RSIZE; ++i) {
|
|
pr_info("%x.%p ", dma->resr[i].l, dev->sa[i]);
|
|
if (dev->sa[i]) {
|
|
hifn_process_ready(dev->sa[i], -ENODEV);
|
|
hifn_complete_sa(dev, i);
|
|
}
|
|
}
|
|
pr_info("\n");
|
|
|
|
hifn_reset_dma(dev, 1);
|
|
hifn_stop_device(dev);
|
|
hifn_start_device(dev);
|
|
dev->reset = 0;
|
|
}
|
|
|
|
tasklet_schedule(&dev->tasklet);
|
|
}
|
|
|
|
schedule_delayed_work(&dev->work, HZ);
|
|
}
|
|
|
|
static irqreturn_t hifn_interrupt(int irq, void *data)
|
|
{
|
|
struct hifn_device *dev = (struct hifn_device *)data;
|
|
struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
|
|
u32 dmacsr, restart;
|
|
|
|
dmacsr = hifn_read_1(dev, HIFN_1_DMA_CSR);
|
|
|
|
dev_dbg(&dev->pdev->dev, "1 dmacsr: %08x, dmareg: %08x, res: %08x [%d], "
|
|
"i: %d.%d.%d.%d, u: %d.%d.%d.%d.\n",
|
|
dmacsr, dev->dmareg, dmacsr & dev->dmareg, dma->cmdi,
|
|
dma->cmdi, dma->srci, dma->dsti, dma->resi,
|
|
dma->cmdu, dma->srcu, dma->dstu, dma->resu);
|
|
|
|
if ((dmacsr & dev->dmareg) == 0)
|
|
return IRQ_NONE;
|
|
|
|
hifn_write_1(dev, HIFN_1_DMA_CSR, dmacsr & dev->dmareg);
|
|
|
|
if (dmacsr & HIFN_DMACSR_ENGINE)
|
|
hifn_write_0(dev, HIFN_0_PUISR, hifn_read_0(dev, HIFN_0_PUISR));
|
|
if (dmacsr & HIFN_DMACSR_PUBDONE)
|
|
hifn_write_1(dev, HIFN_1_PUB_STATUS,
|
|
hifn_read_1(dev, HIFN_1_PUB_STATUS) | HIFN_PUBSTS_DONE);
|
|
|
|
restart = dmacsr & (HIFN_DMACSR_R_OVER | HIFN_DMACSR_D_OVER);
|
|
if (restart) {
|
|
u32 puisr = hifn_read_0(dev, HIFN_0_PUISR);
|
|
|
|
dev_warn(&dev->pdev->dev, "overflow: r: %d, d: %d, puisr: %08x, d: %u.\n",
|
|
!!(dmacsr & HIFN_DMACSR_R_OVER),
|
|
!!(dmacsr & HIFN_DMACSR_D_OVER),
|
|
puisr, !!(puisr & HIFN_PUISR_DSTOVER));
|
|
if (!!(puisr & HIFN_PUISR_DSTOVER))
|
|
hifn_write_0(dev, HIFN_0_PUISR, HIFN_PUISR_DSTOVER);
|
|
hifn_write_1(dev, HIFN_1_DMA_CSR, dmacsr & (HIFN_DMACSR_R_OVER |
|
|
HIFN_DMACSR_D_OVER));
|
|
}
|
|
|
|
restart = dmacsr & (HIFN_DMACSR_C_ABORT | HIFN_DMACSR_S_ABORT |
|
|
HIFN_DMACSR_D_ABORT | HIFN_DMACSR_R_ABORT);
|
|
if (restart) {
|
|
dev_warn(&dev->pdev->dev, "abort: c: %d, s: %d, d: %d, r: %d.\n",
|
|
!!(dmacsr & HIFN_DMACSR_C_ABORT),
|
|
!!(dmacsr & HIFN_DMACSR_S_ABORT),
|
|
!!(dmacsr & HIFN_DMACSR_D_ABORT),
|
|
!!(dmacsr & HIFN_DMACSR_R_ABORT));
|
|
hifn_reset_dma(dev, 1);
|
|
hifn_init_dma(dev);
|
|
hifn_init_registers(dev);
|
|
}
|
|
|
|
if ((dmacsr & HIFN_DMACSR_C_WAIT) && (dma->cmdu == 0)) {
|
|
dev_dbg(&dev->pdev->dev, "wait on command.\n");
|
|
dev->dmareg &= ~(HIFN_DMAIER_C_WAIT);
|
|
hifn_write_1(dev, HIFN_1_DMA_IER, dev->dmareg);
|
|
}
|
|
|
|
tasklet_schedule(&dev->tasklet);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void hifn_flush(struct hifn_device *dev)
|
|
{
|
|
unsigned long flags;
|
|
struct crypto_async_request *async_req;
|
|
struct ablkcipher_request *req;
|
|
struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
|
|
int i;
|
|
|
|
for (i = 0; i < HIFN_D_RES_RSIZE; ++i) {
|
|
struct hifn_desc *d = &dma->resr[i];
|
|
|
|
if (dev->sa[i]) {
|
|
hifn_process_ready(dev->sa[i],
|
|
(d->l & __cpu_to_le32(HIFN_D_VALID)) ? -ENODEV : 0);
|
|
hifn_complete_sa(dev, i);
|
|
}
|
|
}
|
|
|
|
spin_lock_irqsave(&dev->lock, flags);
|
|
while ((async_req = crypto_dequeue_request(&dev->queue))) {
|
|
req = ablkcipher_request_cast(async_req);
|
|
spin_unlock_irqrestore(&dev->lock, flags);
|
|
|
|
hifn_process_ready(req, -ENODEV);
|
|
|
|
spin_lock_irqsave(&dev->lock, flags);
|
|
}
|
|
spin_unlock_irqrestore(&dev->lock, flags);
|
|
}
|
|
|
|
static int hifn_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
|
|
unsigned int len)
|
|
{
|
|
struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
|
|
struct hifn_context *ctx = crypto_tfm_ctx(tfm);
|
|
struct hifn_device *dev = ctx->dev;
|
|
|
|
if (len > HIFN_MAX_CRYPT_KEY_LENGTH) {
|
|
crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
|
|
return -1;
|
|
}
|
|
|
|
if (len == HIFN_DES_KEY_LENGTH) {
|
|
u32 tmp[DES_EXPKEY_WORDS];
|
|
int ret = des_ekey(tmp, key);
|
|
|
|
if (unlikely(ret == 0) && (tfm->crt_flags & CRYPTO_TFM_REQ_WEAK_KEY)) {
|
|
tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY;
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
dev->flags &= ~HIFN_FLAG_OLD_KEY;
|
|
|
|
memcpy(ctx->key, key, len);
|
|
ctx->keysize = len;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hifn_handle_req(struct ablkcipher_request *req)
|
|
{
|
|
struct hifn_context *ctx = crypto_tfm_ctx(req->base.tfm);
|
|
struct hifn_device *dev = ctx->dev;
|
|
int err = -EAGAIN;
|
|
|
|
if (dev->started + DIV_ROUND_UP(req->nbytes, PAGE_SIZE) <= HIFN_QUEUE_LENGTH)
|
|
err = hifn_setup_session(req);
|
|
|
|
if (err == -EAGAIN) {
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&dev->lock, flags);
|
|
err = ablkcipher_enqueue_request(&dev->queue, req);
|
|
spin_unlock_irqrestore(&dev->lock, flags);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int hifn_setup_crypto_req(struct ablkcipher_request *req, u8 op,
|
|
u8 type, u8 mode)
|
|
{
|
|
struct hifn_context *ctx = crypto_tfm_ctx(req->base.tfm);
|
|
struct hifn_request_context *rctx = ablkcipher_request_ctx(req);
|
|
unsigned ivsize;
|
|
|
|
ivsize = crypto_ablkcipher_ivsize(crypto_ablkcipher_reqtfm(req));
|
|
|
|
if (req->info && mode != ACRYPTO_MODE_ECB) {
|
|
if (type == ACRYPTO_TYPE_AES_128)
|
|
ivsize = HIFN_AES_IV_LENGTH;
|
|
else if (type == ACRYPTO_TYPE_DES)
|
|
ivsize = HIFN_DES_KEY_LENGTH;
|
|
else if (type == ACRYPTO_TYPE_3DES)
|
|
ivsize = HIFN_3DES_KEY_LENGTH;
|
|
}
|
|
|
|
if (ctx->keysize != 16 && type == ACRYPTO_TYPE_AES_128) {
|
|
if (ctx->keysize == 24)
|
|
type = ACRYPTO_TYPE_AES_192;
|
|
else if (ctx->keysize == 32)
|
|
type = ACRYPTO_TYPE_AES_256;
|
|
}
|
|
|
|
rctx->op = op;
|
|
rctx->mode = mode;
|
|
rctx->type = type;
|
|
rctx->iv = req->info;
|
|
rctx->ivsize = ivsize;
|
|
|
|
/*
|
|
* HEAVY TODO: needs to kick Herbert XU to write documentation.
|
|
* HEAVY TODO: needs to kick Herbert XU to write documentation.
|
|
* HEAVY TODO: needs to kick Herbert XU to write documentation.
|
|
*/
|
|
|
|
return hifn_handle_req(req);
|
|
}
|
|
|
|
static int hifn_process_queue(struct hifn_device *dev)
|
|
{
|
|
struct crypto_async_request *async_req, *backlog;
|
|
struct ablkcipher_request *req;
|
|
unsigned long flags;
|
|
int err = 0;
|
|
|
|
while (dev->started < HIFN_QUEUE_LENGTH) {
|
|
spin_lock_irqsave(&dev->lock, flags);
|
|
backlog = crypto_get_backlog(&dev->queue);
|
|
async_req = crypto_dequeue_request(&dev->queue);
|
|
spin_unlock_irqrestore(&dev->lock, flags);
|
|
|
|
if (!async_req)
|
|
break;
|
|
|
|
if (backlog)
|
|
backlog->complete(backlog, -EINPROGRESS);
|
|
|
|
req = ablkcipher_request_cast(async_req);
|
|
|
|
err = hifn_handle_req(req);
|
|
if (err)
|
|
break;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int hifn_setup_crypto(struct ablkcipher_request *req, u8 op,
|
|
u8 type, u8 mode)
|
|
{
|
|
int err;
|
|
struct hifn_context *ctx = crypto_tfm_ctx(req->base.tfm);
|
|
struct hifn_device *dev = ctx->dev;
|
|
|
|
err = hifn_setup_crypto_req(req, op, type, mode);
|
|
if (err)
|
|
return err;
|
|
|
|
if (dev->started < HIFN_QUEUE_LENGTH && dev->queue.qlen)
|
|
hifn_process_queue(dev);
|
|
|
|
return -EINPROGRESS;
|
|
}
|
|
|
|
/*
|
|
* AES ecryption functions.
|
|
*/
|
|
static inline int hifn_encrypt_aes_ecb(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_ENCRYPT,
|
|
ACRYPTO_TYPE_AES_128, ACRYPTO_MODE_ECB);
|
|
}
|
|
static inline int hifn_encrypt_aes_cbc(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_ENCRYPT,
|
|
ACRYPTO_TYPE_AES_128, ACRYPTO_MODE_CBC);
|
|
}
|
|
static inline int hifn_encrypt_aes_cfb(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_ENCRYPT,
|
|
ACRYPTO_TYPE_AES_128, ACRYPTO_MODE_CFB);
|
|
}
|
|
static inline int hifn_encrypt_aes_ofb(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_ENCRYPT,
|
|
ACRYPTO_TYPE_AES_128, ACRYPTO_MODE_OFB);
|
|
}
|
|
|
|
/*
|
|
* AES decryption functions.
|
|
*/
|
|
static inline int hifn_decrypt_aes_ecb(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_DECRYPT,
|
|
ACRYPTO_TYPE_AES_128, ACRYPTO_MODE_ECB);
|
|
}
|
|
static inline int hifn_decrypt_aes_cbc(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_DECRYPT,
|
|
ACRYPTO_TYPE_AES_128, ACRYPTO_MODE_CBC);
|
|
}
|
|
static inline int hifn_decrypt_aes_cfb(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_DECRYPT,
|
|
ACRYPTO_TYPE_AES_128, ACRYPTO_MODE_CFB);
|
|
}
|
|
static inline int hifn_decrypt_aes_ofb(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_DECRYPT,
|
|
ACRYPTO_TYPE_AES_128, ACRYPTO_MODE_OFB);
|
|
}
|
|
|
|
/*
|
|
* DES ecryption functions.
|
|
*/
|
|
static inline int hifn_encrypt_des_ecb(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_ENCRYPT,
|
|
ACRYPTO_TYPE_DES, ACRYPTO_MODE_ECB);
|
|
}
|
|
static inline int hifn_encrypt_des_cbc(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_ENCRYPT,
|
|
ACRYPTO_TYPE_DES, ACRYPTO_MODE_CBC);
|
|
}
|
|
static inline int hifn_encrypt_des_cfb(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_ENCRYPT,
|
|
ACRYPTO_TYPE_DES, ACRYPTO_MODE_CFB);
|
|
}
|
|
static inline int hifn_encrypt_des_ofb(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_ENCRYPT,
|
|
ACRYPTO_TYPE_DES, ACRYPTO_MODE_OFB);
|
|
}
|
|
|
|
/*
|
|
* DES decryption functions.
|
|
*/
|
|
static inline int hifn_decrypt_des_ecb(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_DECRYPT,
|
|
ACRYPTO_TYPE_DES, ACRYPTO_MODE_ECB);
|
|
}
|
|
static inline int hifn_decrypt_des_cbc(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_DECRYPT,
|
|
ACRYPTO_TYPE_DES, ACRYPTO_MODE_CBC);
|
|
}
|
|
static inline int hifn_decrypt_des_cfb(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_DECRYPT,
|
|
ACRYPTO_TYPE_DES, ACRYPTO_MODE_CFB);
|
|
}
|
|
static inline int hifn_decrypt_des_ofb(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_DECRYPT,
|
|
ACRYPTO_TYPE_DES, ACRYPTO_MODE_OFB);
|
|
}
|
|
|
|
/*
|
|
* 3DES ecryption functions.
|
|
*/
|
|
static inline int hifn_encrypt_3des_ecb(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_ENCRYPT,
|
|
ACRYPTO_TYPE_3DES, ACRYPTO_MODE_ECB);
|
|
}
|
|
static inline int hifn_encrypt_3des_cbc(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_ENCRYPT,
|
|
ACRYPTO_TYPE_3DES, ACRYPTO_MODE_CBC);
|
|
}
|
|
static inline int hifn_encrypt_3des_cfb(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_ENCRYPT,
|
|
ACRYPTO_TYPE_3DES, ACRYPTO_MODE_CFB);
|
|
}
|
|
static inline int hifn_encrypt_3des_ofb(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_ENCRYPT,
|
|
ACRYPTO_TYPE_3DES, ACRYPTO_MODE_OFB);
|
|
}
|
|
|
|
/* 3DES decryption functions. */
|
|
static inline int hifn_decrypt_3des_ecb(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_DECRYPT,
|
|
ACRYPTO_TYPE_3DES, ACRYPTO_MODE_ECB);
|
|
}
|
|
static inline int hifn_decrypt_3des_cbc(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_DECRYPT,
|
|
ACRYPTO_TYPE_3DES, ACRYPTO_MODE_CBC);
|
|
}
|
|
static inline int hifn_decrypt_3des_cfb(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_DECRYPT,
|
|
ACRYPTO_TYPE_3DES, ACRYPTO_MODE_CFB);
|
|
}
|
|
static inline int hifn_decrypt_3des_ofb(struct ablkcipher_request *req)
|
|
{
|
|
return hifn_setup_crypto(req, ACRYPTO_OP_DECRYPT,
|
|
ACRYPTO_TYPE_3DES, ACRYPTO_MODE_OFB);
|
|
}
|
|
|
|
struct hifn_alg_template {
|
|
char name[CRYPTO_MAX_ALG_NAME];
|
|
char drv_name[CRYPTO_MAX_ALG_NAME];
|
|
unsigned int bsize;
|
|
struct ablkcipher_alg ablkcipher;
|
|
};
|
|
|
|
static struct hifn_alg_template hifn_alg_templates[] = {
|
|
/*
|
|
* 3DES ECB, CBC, CFB and OFB modes.
|
|
*/
|
|
{
|
|
.name = "cfb(des3_ede)", .drv_name = "cfb-3des", .bsize = 8,
|
|
.ablkcipher = {
|
|
.min_keysize = HIFN_3DES_KEY_LENGTH,
|
|
.max_keysize = HIFN_3DES_KEY_LENGTH,
|
|
.setkey = hifn_setkey,
|
|
.encrypt = hifn_encrypt_3des_cfb,
|
|
.decrypt = hifn_decrypt_3des_cfb,
|
|
},
|
|
},
|
|
{
|
|
.name = "ofb(des3_ede)", .drv_name = "ofb-3des", .bsize = 8,
|
|
.ablkcipher = {
|
|
.min_keysize = HIFN_3DES_KEY_LENGTH,
|
|
.max_keysize = HIFN_3DES_KEY_LENGTH,
|
|
.setkey = hifn_setkey,
|
|
.encrypt = hifn_encrypt_3des_ofb,
|
|
.decrypt = hifn_decrypt_3des_ofb,
|
|
},
|
|
},
|
|
{
|
|
.name = "cbc(des3_ede)", .drv_name = "cbc-3des", .bsize = 8,
|
|
.ablkcipher = {
|
|
.ivsize = HIFN_IV_LENGTH,
|
|
.min_keysize = HIFN_3DES_KEY_LENGTH,
|
|
.max_keysize = HIFN_3DES_KEY_LENGTH,
|
|
.setkey = hifn_setkey,
|
|
.encrypt = hifn_encrypt_3des_cbc,
|
|
.decrypt = hifn_decrypt_3des_cbc,
|
|
},
|
|
},
|
|
{
|
|
.name = "ecb(des3_ede)", .drv_name = "ecb-3des", .bsize = 8,
|
|
.ablkcipher = {
|
|
.min_keysize = HIFN_3DES_KEY_LENGTH,
|
|
.max_keysize = HIFN_3DES_KEY_LENGTH,
|
|
.setkey = hifn_setkey,
|
|
.encrypt = hifn_encrypt_3des_ecb,
|
|
.decrypt = hifn_decrypt_3des_ecb,
|
|
},
|
|
},
|
|
|
|
/*
|
|
* DES ECB, CBC, CFB and OFB modes.
|
|
*/
|
|
{
|
|
.name = "cfb(des)", .drv_name = "cfb-des", .bsize = 8,
|
|
.ablkcipher = {
|
|
.min_keysize = HIFN_DES_KEY_LENGTH,
|
|
.max_keysize = HIFN_DES_KEY_LENGTH,
|
|
.setkey = hifn_setkey,
|
|
.encrypt = hifn_encrypt_des_cfb,
|
|
.decrypt = hifn_decrypt_des_cfb,
|
|
},
|
|
},
|
|
{
|
|
.name = "ofb(des)", .drv_name = "ofb-des", .bsize = 8,
|
|
.ablkcipher = {
|
|
.min_keysize = HIFN_DES_KEY_LENGTH,
|
|
.max_keysize = HIFN_DES_KEY_LENGTH,
|
|
.setkey = hifn_setkey,
|
|
.encrypt = hifn_encrypt_des_ofb,
|
|
.decrypt = hifn_decrypt_des_ofb,
|
|
},
|
|
},
|
|
{
|
|
.name = "cbc(des)", .drv_name = "cbc-des", .bsize = 8,
|
|
.ablkcipher = {
|
|
.ivsize = HIFN_IV_LENGTH,
|
|
.min_keysize = HIFN_DES_KEY_LENGTH,
|
|
.max_keysize = HIFN_DES_KEY_LENGTH,
|
|
.setkey = hifn_setkey,
|
|
.encrypt = hifn_encrypt_des_cbc,
|
|
.decrypt = hifn_decrypt_des_cbc,
|
|
},
|
|
},
|
|
{
|
|
.name = "ecb(des)", .drv_name = "ecb-des", .bsize = 8,
|
|
.ablkcipher = {
|
|
.min_keysize = HIFN_DES_KEY_LENGTH,
|
|
.max_keysize = HIFN_DES_KEY_LENGTH,
|
|
.setkey = hifn_setkey,
|
|
.encrypt = hifn_encrypt_des_ecb,
|
|
.decrypt = hifn_decrypt_des_ecb,
|
|
},
|
|
},
|
|
|
|
/*
|
|
* AES ECB, CBC, CFB and OFB modes.
|
|
*/
|
|
{
|
|
.name = "ecb(aes)", .drv_name = "ecb-aes", .bsize = 16,
|
|
.ablkcipher = {
|
|
.min_keysize = AES_MIN_KEY_SIZE,
|
|
.max_keysize = AES_MAX_KEY_SIZE,
|
|
.setkey = hifn_setkey,
|
|
.encrypt = hifn_encrypt_aes_ecb,
|
|
.decrypt = hifn_decrypt_aes_ecb,
|
|
},
|
|
},
|
|
{
|
|
.name = "cbc(aes)", .drv_name = "cbc-aes", .bsize = 16,
|
|
.ablkcipher = {
|
|
.ivsize = HIFN_AES_IV_LENGTH,
|
|
.min_keysize = AES_MIN_KEY_SIZE,
|
|
.max_keysize = AES_MAX_KEY_SIZE,
|
|
.setkey = hifn_setkey,
|
|
.encrypt = hifn_encrypt_aes_cbc,
|
|
.decrypt = hifn_decrypt_aes_cbc,
|
|
},
|
|
},
|
|
{
|
|
.name = "cfb(aes)", .drv_name = "cfb-aes", .bsize = 16,
|
|
.ablkcipher = {
|
|
.min_keysize = AES_MIN_KEY_SIZE,
|
|
.max_keysize = AES_MAX_KEY_SIZE,
|
|
.setkey = hifn_setkey,
|
|
.encrypt = hifn_encrypt_aes_cfb,
|
|
.decrypt = hifn_decrypt_aes_cfb,
|
|
},
|
|
},
|
|
{
|
|
.name = "ofb(aes)", .drv_name = "ofb-aes", .bsize = 16,
|
|
.ablkcipher = {
|
|
.min_keysize = AES_MIN_KEY_SIZE,
|
|
.max_keysize = AES_MAX_KEY_SIZE,
|
|
.setkey = hifn_setkey,
|
|
.encrypt = hifn_encrypt_aes_ofb,
|
|
.decrypt = hifn_decrypt_aes_ofb,
|
|
},
|
|
},
|
|
};
|
|
|
|
static int hifn_cra_init(struct crypto_tfm *tfm)
|
|
{
|
|
struct crypto_alg *alg = tfm->__crt_alg;
|
|
struct hifn_crypto_alg *ha = crypto_alg_to_hifn(alg);
|
|
struct hifn_context *ctx = crypto_tfm_ctx(tfm);
|
|
|
|
ctx->dev = ha->dev;
|
|
tfm->crt_ablkcipher.reqsize = sizeof(struct hifn_request_context);
|
|
return 0;
|
|
}
|
|
|
|
static int hifn_alg_alloc(struct hifn_device *dev, struct hifn_alg_template *t)
|
|
{
|
|
struct hifn_crypto_alg *alg;
|
|
int err;
|
|
|
|
alg = kzalloc(sizeof(*alg), GFP_KERNEL);
|
|
if (!alg)
|
|
return -ENOMEM;
|
|
|
|
snprintf(alg->alg.cra_name, CRYPTO_MAX_ALG_NAME, "%s", t->name);
|
|
snprintf(alg->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s-%s",
|
|
t->drv_name, dev->name);
|
|
|
|
alg->alg.cra_priority = 300;
|
|
alg->alg.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
|
|
CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC;
|
|
alg->alg.cra_blocksize = t->bsize;
|
|
alg->alg.cra_ctxsize = sizeof(struct hifn_context);
|
|
alg->alg.cra_alignmask = 0;
|
|
alg->alg.cra_type = &crypto_ablkcipher_type;
|
|
alg->alg.cra_module = THIS_MODULE;
|
|
alg->alg.cra_u.ablkcipher = t->ablkcipher;
|
|
alg->alg.cra_init = hifn_cra_init;
|
|
|
|
alg->dev = dev;
|
|
|
|
list_add_tail(&alg->entry, &dev->alg_list);
|
|
|
|
err = crypto_register_alg(&alg->alg);
|
|
if (err) {
|
|
list_del(&alg->entry);
|
|
kfree(alg);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static void hifn_unregister_alg(struct hifn_device *dev)
|
|
{
|
|
struct hifn_crypto_alg *a, *n;
|
|
|
|
list_for_each_entry_safe(a, n, &dev->alg_list, entry) {
|
|
list_del(&a->entry);
|
|
crypto_unregister_alg(&a->alg);
|
|
kfree(a);
|
|
}
|
|
}
|
|
|
|
static int hifn_register_alg(struct hifn_device *dev)
|
|
{
|
|
int i, err;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(hifn_alg_templates); ++i) {
|
|
err = hifn_alg_alloc(dev, &hifn_alg_templates[i]);
|
|
if (err)
|
|
goto err_out_exit;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_out_exit:
|
|
hifn_unregister_alg(dev);
|
|
return err;
|
|
}
|
|
|
|
static void hifn_tasklet_callback(unsigned long data)
|
|
{
|
|
struct hifn_device *dev = (struct hifn_device *)data;
|
|
|
|
/*
|
|
* This is ok to call this without lock being held,
|
|
* althogh it modifies some parameters used in parallel,
|
|
* (like dev->success), but they are used in process
|
|
* context or update is atomic (like setting dev->sa[i] to NULL).
|
|
*/
|
|
hifn_clear_rings(dev, 0);
|
|
|
|
if (dev->started < HIFN_QUEUE_LENGTH && dev->queue.qlen)
|
|
hifn_process_queue(dev);
|
|
}
|
|
|
|
static int hifn_probe(struct pci_dev *pdev, const struct pci_device_id *id)
|
|
{
|
|
int err, i;
|
|
struct hifn_device *dev;
|
|
char name[8];
|
|
|
|
err = pci_enable_device(pdev);
|
|
if (err)
|
|
return err;
|
|
pci_set_master(pdev);
|
|
|
|
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
|
|
if (err)
|
|
goto err_out_disable_pci_device;
|
|
|
|
snprintf(name, sizeof(name), "hifn%d",
|
|
atomic_inc_return(&hifn_dev_number) - 1);
|
|
|
|
err = pci_request_regions(pdev, name);
|
|
if (err)
|
|
goto err_out_disable_pci_device;
|
|
|
|
if (pci_resource_len(pdev, 0) < HIFN_BAR0_SIZE ||
|
|
pci_resource_len(pdev, 1) < HIFN_BAR1_SIZE ||
|
|
pci_resource_len(pdev, 2) < HIFN_BAR2_SIZE) {
|
|
dev_err(&pdev->dev, "Broken hardware - I/O regions are too small.\n");
|
|
err = -ENODEV;
|
|
goto err_out_free_regions;
|
|
}
|
|
|
|
dev = kzalloc(sizeof(struct hifn_device) + sizeof(struct crypto_alg),
|
|
GFP_KERNEL);
|
|
if (!dev) {
|
|
err = -ENOMEM;
|
|
goto err_out_free_regions;
|
|
}
|
|
|
|
INIT_LIST_HEAD(&dev->alg_list);
|
|
|
|
snprintf(dev->name, sizeof(dev->name), "%s", name);
|
|
spin_lock_init(&dev->lock);
|
|
|
|
for (i = 0; i < 3; ++i) {
|
|
unsigned long addr, size;
|
|
|
|
addr = pci_resource_start(pdev, i);
|
|
size = pci_resource_len(pdev, i);
|
|
|
|
dev->bar[i] = ioremap_nocache(addr, size);
|
|
if (!dev->bar[i]) {
|
|
err = -ENOMEM;
|
|
goto err_out_unmap_bars;
|
|
}
|
|
}
|
|
|
|
dev->desc_virt = pci_zalloc_consistent(pdev, sizeof(struct hifn_dma),
|
|
&dev->desc_dma);
|
|
if (!dev->desc_virt) {
|
|
dev_err(&pdev->dev, "Failed to allocate descriptor rings.\n");
|
|
err = -ENOMEM;
|
|
goto err_out_unmap_bars;
|
|
}
|
|
|
|
dev->pdev = pdev;
|
|
dev->irq = pdev->irq;
|
|
|
|
for (i = 0; i < HIFN_D_RES_RSIZE; ++i)
|
|
dev->sa[i] = NULL;
|
|
|
|
pci_set_drvdata(pdev, dev);
|
|
|
|
tasklet_init(&dev->tasklet, hifn_tasklet_callback, (unsigned long)dev);
|
|
|
|
crypto_init_queue(&dev->queue, 1);
|
|
|
|
err = request_irq(dev->irq, hifn_interrupt, IRQF_SHARED, dev->name, dev);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "Failed to request IRQ%d: err: %d.\n",
|
|
dev->irq, err);
|
|
dev->irq = 0;
|
|
goto err_out_free_desc;
|
|
}
|
|
|
|
err = hifn_start_device(dev);
|
|
if (err)
|
|
goto err_out_free_irq;
|
|
|
|
err = hifn_register_rng(dev);
|
|
if (err)
|
|
goto err_out_stop_device;
|
|
|
|
err = hifn_register_alg(dev);
|
|
if (err)
|
|
goto err_out_unregister_rng;
|
|
|
|
INIT_DELAYED_WORK(&dev->work, hifn_work);
|
|
schedule_delayed_work(&dev->work, HZ);
|
|
|
|
dev_dbg(&pdev->dev, "HIFN crypto accelerator card at %s has been "
|
|
"successfully registered as %s.\n",
|
|
pci_name(pdev), dev->name);
|
|
|
|
return 0;
|
|
|
|
err_out_unregister_rng:
|
|
hifn_unregister_rng(dev);
|
|
err_out_stop_device:
|
|
hifn_reset_dma(dev, 1);
|
|
hifn_stop_device(dev);
|
|
err_out_free_irq:
|
|
free_irq(dev->irq, dev);
|
|
tasklet_kill(&dev->tasklet);
|
|
err_out_free_desc:
|
|
pci_free_consistent(pdev, sizeof(struct hifn_dma),
|
|
dev->desc_virt, dev->desc_dma);
|
|
|
|
err_out_unmap_bars:
|
|
for (i = 0; i < 3; ++i)
|
|
if (dev->bar[i])
|
|
iounmap(dev->bar[i]);
|
|
|
|
err_out_free_regions:
|
|
pci_release_regions(pdev);
|
|
|
|
err_out_disable_pci_device:
|
|
pci_disable_device(pdev);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void hifn_remove(struct pci_dev *pdev)
|
|
{
|
|
int i;
|
|
struct hifn_device *dev;
|
|
|
|
dev = pci_get_drvdata(pdev);
|
|
|
|
if (dev) {
|
|
cancel_delayed_work_sync(&dev->work);
|
|
|
|
hifn_unregister_rng(dev);
|
|
hifn_unregister_alg(dev);
|
|
hifn_reset_dma(dev, 1);
|
|
hifn_stop_device(dev);
|
|
|
|
free_irq(dev->irq, dev);
|
|
tasklet_kill(&dev->tasklet);
|
|
|
|
hifn_flush(dev);
|
|
|
|
pci_free_consistent(pdev, sizeof(struct hifn_dma),
|
|
dev->desc_virt, dev->desc_dma);
|
|
for (i = 0; i < 3; ++i)
|
|
if (dev->bar[i])
|
|
iounmap(dev->bar[i]);
|
|
|
|
kfree(dev);
|
|
}
|
|
|
|
pci_release_regions(pdev);
|
|
pci_disable_device(pdev);
|
|
}
|
|
|
|
static struct pci_device_id hifn_pci_tbl[] = {
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_HIFN, PCI_DEVICE_ID_HIFN_7955) },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_HIFN, PCI_DEVICE_ID_HIFN_7956) },
|
|
{ 0 }
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, hifn_pci_tbl);
|
|
|
|
static struct pci_driver hifn_pci_driver = {
|
|
.name = "hifn795x",
|
|
.id_table = hifn_pci_tbl,
|
|
.probe = hifn_probe,
|
|
.remove = hifn_remove,
|
|
};
|
|
|
|
static int __init hifn_init(void)
|
|
{
|
|
unsigned int freq;
|
|
int err;
|
|
|
|
/* HIFN supports only 32-bit addresses */
|
|
BUILD_BUG_ON(sizeof(dma_addr_t) != 4);
|
|
|
|
if (strncmp(hifn_pll_ref, "ext", 3) &&
|
|
strncmp(hifn_pll_ref, "pci", 3)) {
|
|
pr_err("hifn795x: invalid hifn_pll_ref clock, must be pci or ext");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* For the 7955/7956 the reference clock frequency must be in the
|
|
* range of 20MHz-100MHz. For the 7954 the upper bound is 66.67MHz,
|
|
* but this chip is currently not supported.
|
|
*/
|
|
if (hifn_pll_ref[3] != '\0') {
|
|
freq = simple_strtoul(hifn_pll_ref + 3, NULL, 10);
|
|
if (freq < 20 || freq > 100) {
|
|
pr_err("hifn795x: invalid hifn_pll_ref frequency, must"
|
|
"be in the range of 20-100");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
err = pci_register_driver(&hifn_pci_driver);
|
|
if (err < 0) {
|
|
pr_err("Failed to register PCI driver for %s device.\n",
|
|
hifn_pci_driver.name);
|
|
return -ENODEV;
|
|
}
|
|
|
|
pr_info("Driver for HIFN 795x crypto accelerator chip "
|
|
"has been successfully registered.\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit hifn_fini(void)
|
|
{
|
|
pci_unregister_driver(&hifn_pci_driver);
|
|
|
|
pr_info("Driver for HIFN 795x crypto accelerator chip "
|
|
"has been successfully unregistered.\n");
|
|
}
|
|
|
|
module_init(hifn_init);
|
|
module_exit(hifn_fini);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
|
|
MODULE_DESCRIPTION("Driver for HIFN 795x crypto accelerator chip.");
|