411 lines
15 KiB
C
411 lines
15 KiB
C
/*
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* Copyright (C) 2007 PA Semi, Inc
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*
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* Driver for the PA Semi PWRficient DMA Crypto Engine, soft state and
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* hardware register layouts.
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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 version 2 as
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* published by the Free Software Foundation.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef PASEMI_FNU_H
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#define PASEMI_FNU_H
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#include <linux/spinlock.h>
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#define PASEMI_SESSION(sid) ((sid) & 0xffffffff)
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#define PASEMI_SID(sesn) ((sesn) & 0xffffffff)
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#define DPRINTF(a...) if (debug) { printk(DRV_NAME ": " a); }
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/* Must be a power of two */
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#define RX_RING_SIZE 512
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#define TX_RING_SIZE 512
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#define TX_DESC(ring, num) ((ring)->desc[2 * (num & (TX_RING_SIZE-1))])
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#define TX_DESC_INFO(ring, num) ((ring)->desc_info[(num) & (TX_RING_SIZE-1)])
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#define MAX_DESC_SIZE 8
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#define PASEMI_INITIAL_SESSIONS 10
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#define PASEMI_FNU_CHANNELS 8
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/* DMA descriptor */
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struct pasemi_desc {
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u64 quad[2*MAX_DESC_SIZE];
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int quad_cnt;
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int size;
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int postop;
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};
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/*
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* Holds per descriptor data
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*/
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struct pasemi_desc_info {
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int desc_size;
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int desc_postop;
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#define PASEMI_CHECK_SIG 0x1
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struct cryptop *cf_crp;
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};
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/*
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* Holds per channel data
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*/
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struct pasemi_fnu_txring {
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volatile u64 *desc;
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volatile struct
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pasemi_desc_info *desc_info;
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dma_addr_t dma;
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struct timer_list crypto_timer;
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spinlock_t fill_lock;
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spinlock_t clean_lock;
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unsigned int next_to_fill;
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unsigned int next_to_clean;
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u16 total_pktcnt;
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int irq;
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int sesn;
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char irq_name[10];
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};
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/*
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* Holds data specific to a single pasemi device.
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*/
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struct pasemi_softc {
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softc_device_decl sc_cdev;
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struct pci_dev *dma_pdev; /* device backpointer */
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struct pci_dev *iob_pdev; /* device backpointer */
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void __iomem *dma_regs;
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void __iomem *iob_regs;
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int base_irq;
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int base_chan;
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int32_t sc_cid; /* crypto tag */
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int sc_nsessions;
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struct pasemi_session **sc_sessions;
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int sc_num_channels;/* number of crypto channels */
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/* pointer to the array of txring datastructures, one txring per channel */
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struct pasemi_fnu_txring *tx;
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/*
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* mutual exclusion for the channel scheduler
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*/
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spinlock_t sc_chnlock;
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/* last channel used, for now use round-robin to allocate channels */
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int sc_lastchn;
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};
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struct pasemi_session {
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u64 civ[2];
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u64 keysz;
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u64 key[4];
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u64 ccmd;
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u64 hkey[4];
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u64 hseq;
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u64 giv[2];
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u64 hiv[4];
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int used;
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dma_addr_t dma_addr;
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int chan;
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};
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/* status register layout in IOB region, at 0xfd800000 */
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struct pasdma_status {
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u64 rx_sta[64];
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u64 tx_sta[20];
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};
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#define ALG_IS_CIPHER(alg) ((alg == CRYPTO_DES_CBC) || \
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(alg == CRYPTO_3DES_CBC) || \
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(alg == CRYPTO_AES_CBC) || \
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(alg == CRYPTO_ARC4) || \
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(alg == CRYPTO_NULL_CBC))
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#define ALG_IS_SIG(alg) ((alg == CRYPTO_MD5) || \
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(alg == CRYPTO_MD5_HMAC) || \
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(alg == CRYPTO_SHA1) || \
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(alg == CRYPTO_SHA1_HMAC) || \
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(alg == CRYPTO_NULL_HMAC))
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enum {
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PAS_DMA_COM_TXCMD = 0x100, /* Transmit Command Register */
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PAS_DMA_COM_TXSTA = 0x104, /* Transmit Status Register */
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PAS_DMA_COM_RXCMD = 0x108, /* Receive Command Register */
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PAS_DMA_COM_RXSTA = 0x10c, /* Receive Status Register */
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PAS_DMA_COM_CFG = 0x114, /* DMA Configuration Register */
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};
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/* All these registers live in the PCI configuration space for the DMA PCI
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* device. Use the normal PCI config access functions for them.
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*/
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#define PAS_DMA_COM_CFG_FWF 0x18000000
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#define PAS_DMA_COM_TXCMD_EN 0x00000001 /* enable */
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#define PAS_DMA_COM_TXSTA_ACT 0x00000001 /* active */
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#define PAS_DMA_COM_RXCMD_EN 0x00000001 /* enable */
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#define PAS_DMA_COM_RXSTA_ACT 0x00000001 /* active */
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#define _PAS_DMA_TXCHAN_STRIDE 0x20 /* Size per channel */
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#define _PAS_DMA_TXCHAN_TCMDSTA 0x300 /* Command / Status */
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#define _PAS_DMA_TXCHAN_CFG 0x304 /* Configuration */
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#define _PAS_DMA_TXCHAN_DSCRBU 0x308 /* Descriptor BU Allocation */
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#define _PAS_DMA_TXCHAN_INCR 0x310 /* Descriptor increment */
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#define _PAS_DMA_TXCHAN_CNT 0x314 /* Descriptor count/offset */
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#define _PAS_DMA_TXCHAN_BASEL 0x318 /* Descriptor ring base (low) */
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#define _PAS_DMA_TXCHAN_BASEU 0x31c /* (high) */
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#define PAS_DMA_TXCHAN_TCMDSTA(c) (0x300+(c)*_PAS_DMA_TXCHAN_STRIDE)
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#define PAS_DMA_TXCHAN_TCMDSTA_EN 0x00000001 /* Enabled */
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#define PAS_DMA_TXCHAN_TCMDSTA_ST 0x00000002 /* Stop interface */
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#define PAS_DMA_TXCHAN_TCMDSTA_ACT 0x00010000 /* Active */
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#define PAS_DMA_TXCHAN_CFG(c) (0x304+(c)*_PAS_DMA_TXCHAN_STRIDE)
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#define PAS_DMA_TXCHAN_CFG_TY_FUNC 0x00000002 /* Type = interface */
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#define PAS_DMA_TXCHAN_CFG_TY_IFACE 0x00000000 /* Type = interface */
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#define PAS_DMA_TXCHAN_CFG_TATTR_M 0x0000003c
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#define PAS_DMA_TXCHAN_CFG_TATTR_S 2
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#define PAS_DMA_TXCHAN_CFG_TATTR(x) (((x) << PAS_DMA_TXCHAN_CFG_TATTR_S) & \
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PAS_DMA_TXCHAN_CFG_TATTR_M)
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#define PAS_DMA_TXCHAN_CFG_WT_M 0x000001c0
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#define PAS_DMA_TXCHAN_CFG_WT_S 6
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#define PAS_DMA_TXCHAN_CFG_WT(x) (((x) << PAS_DMA_TXCHAN_CFG_WT_S) & \
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PAS_DMA_TXCHAN_CFG_WT_M)
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#define PAS_DMA_TXCHAN_CFG_LPSQ_FAST 0x00000400
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#define PAS_DMA_TXCHAN_CFG_LPDQ_FAST 0x00000800
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#define PAS_DMA_TXCHAN_CFG_CF 0x00001000 /* Clean first line */
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#define PAS_DMA_TXCHAN_CFG_CL 0x00002000 /* Clean last line */
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#define PAS_DMA_TXCHAN_CFG_UP 0x00004000 /* update tx descr when sent */
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#define PAS_DMA_TXCHAN_INCR(c) (0x310+(c)*_PAS_DMA_TXCHAN_STRIDE)
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#define PAS_DMA_TXCHAN_BASEL(c) (0x318+(c)*_PAS_DMA_TXCHAN_STRIDE)
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#define PAS_DMA_TXCHAN_BASEL_BRBL_M 0xffffffc0
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#define PAS_DMA_TXCHAN_BASEL_BRBL_S 0
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#define PAS_DMA_TXCHAN_BASEL_BRBL(x) (((x) << PAS_DMA_TXCHAN_BASEL_BRBL_S) & \
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PAS_DMA_TXCHAN_BASEL_BRBL_M)
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#define PAS_DMA_TXCHAN_BASEU(c) (0x31c+(c)*_PAS_DMA_TXCHAN_STRIDE)
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#define PAS_DMA_TXCHAN_BASEU_BRBH_M 0x00000fff
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#define PAS_DMA_TXCHAN_BASEU_BRBH_S 0
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#define PAS_DMA_TXCHAN_BASEU_BRBH(x) (((x) << PAS_DMA_TXCHAN_BASEU_BRBH_S) & \
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PAS_DMA_TXCHAN_BASEU_BRBH_M)
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/* # of cache lines worth of buffer ring */
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#define PAS_DMA_TXCHAN_BASEU_SIZ_M 0x3fff0000
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#define PAS_DMA_TXCHAN_BASEU_SIZ_S 16 /* 0 = 16K */
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#define PAS_DMA_TXCHAN_BASEU_SIZ(x) (((x) << PAS_DMA_TXCHAN_BASEU_SIZ_S) & \
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PAS_DMA_TXCHAN_BASEU_SIZ_M)
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#define PAS_STATUS_PCNT_M 0x000000000000ffffull
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#define PAS_STATUS_PCNT_S 0
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#define PAS_STATUS_DCNT_M 0x00000000ffff0000ull
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#define PAS_STATUS_DCNT_S 16
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#define PAS_STATUS_BPCNT_M 0x0000ffff00000000ull
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#define PAS_STATUS_BPCNT_S 32
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#define PAS_STATUS_CAUSE_M 0xf000000000000000ull
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#define PAS_STATUS_TIMER 0x1000000000000000ull
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#define PAS_STATUS_ERROR 0x2000000000000000ull
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#define PAS_STATUS_SOFT 0x4000000000000000ull
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#define PAS_STATUS_INT 0x8000000000000000ull
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#define PAS_IOB_DMA_RXCH_CFG(i) (0x1100 + (i)*4)
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#define PAS_IOB_DMA_RXCH_CFG_CNTTH_M 0x00000fff
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#define PAS_IOB_DMA_RXCH_CFG_CNTTH_S 0
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#define PAS_IOB_DMA_RXCH_CFG_CNTTH(x) (((x) << PAS_IOB_DMA_RXCH_CFG_CNTTH_S) & \
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PAS_IOB_DMA_RXCH_CFG_CNTTH_M)
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#define PAS_IOB_DMA_TXCH_CFG(i) (0x1200 + (i)*4)
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#define PAS_IOB_DMA_TXCH_CFG_CNTTH_M 0x00000fff
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#define PAS_IOB_DMA_TXCH_CFG_CNTTH_S 0
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#define PAS_IOB_DMA_TXCH_CFG_CNTTH(x) (((x) << PAS_IOB_DMA_TXCH_CFG_CNTTH_S) & \
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PAS_IOB_DMA_TXCH_CFG_CNTTH_M)
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#define PAS_IOB_DMA_RXCH_STAT(i) (0x1300 + (i)*4)
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#define PAS_IOB_DMA_RXCH_STAT_INTGEN 0x00001000
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#define PAS_IOB_DMA_RXCH_STAT_CNTDEL_M 0x00000fff
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#define PAS_IOB_DMA_RXCH_STAT_CNTDEL_S 0
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#define PAS_IOB_DMA_RXCH_STAT_CNTDEL(x) (((x) << PAS_IOB_DMA_RXCH_STAT_CNTDEL_S) &\
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PAS_IOB_DMA_RXCH_STAT_CNTDEL_M)
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#define PAS_IOB_DMA_TXCH_STAT(i) (0x1400 + (i)*4)
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#define PAS_IOB_DMA_TXCH_STAT_INTGEN 0x00001000
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#define PAS_IOB_DMA_TXCH_STAT_CNTDEL_M 0x00000fff
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#define PAS_IOB_DMA_TXCH_STAT_CNTDEL_S 0
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#define PAS_IOB_DMA_TXCH_STAT_CNTDEL(x) (((x) << PAS_IOB_DMA_TXCH_STAT_CNTDEL_S) &\
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PAS_IOB_DMA_TXCH_STAT_CNTDEL_M)
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#define PAS_IOB_DMA_RXCH_RESET(i) (0x1500 + (i)*4)
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#define PAS_IOB_DMA_RXCH_RESET_PCNT_M 0xffff0000
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#define PAS_IOB_DMA_RXCH_RESET_PCNT_S 16
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#define PAS_IOB_DMA_RXCH_RESET_PCNT(x) (((x) << PAS_IOB_DMA_RXCH_RESET_PCNT_S) & \
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PAS_IOB_DMA_RXCH_RESET_PCNT_M)
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#define PAS_IOB_DMA_RXCH_RESET_PCNTRST 0x00000020
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#define PAS_IOB_DMA_RXCH_RESET_DCNTRST 0x00000010
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#define PAS_IOB_DMA_RXCH_RESET_TINTC 0x00000008
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#define PAS_IOB_DMA_RXCH_RESET_DINTC 0x00000004
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#define PAS_IOB_DMA_RXCH_RESET_SINTC 0x00000002
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#define PAS_IOB_DMA_RXCH_RESET_PINTC 0x00000001
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#define PAS_IOB_DMA_TXCH_RESET(i) (0x1600 + (i)*4)
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#define PAS_IOB_DMA_TXCH_RESET_PCNT_M 0xffff0000
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#define PAS_IOB_DMA_TXCH_RESET_PCNT_S 16
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#define PAS_IOB_DMA_TXCH_RESET_PCNT(x) (((x) << PAS_IOB_DMA_TXCH_RESET_PCNT_S) & \
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PAS_IOB_DMA_TXCH_RESET_PCNT_M)
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#define PAS_IOB_DMA_TXCH_RESET_PCNTRST 0x00000020
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#define PAS_IOB_DMA_TXCH_RESET_DCNTRST 0x00000010
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#define PAS_IOB_DMA_TXCH_RESET_TINTC 0x00000008
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#define PAS_IOB_DMA_TXCH_RESET_DINTC 0x00000004
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#define PAS_IOB_DMA_TXCH_RESET_SINTC 0x00000002
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#define PAS_IOB_DMA_TXCH_RESET_PINTC 0x00000001
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#define PAS_IOB_DMA_COM_TIMEOUTCFG 0x1700
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#define PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT_M 0x00ffffff
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#define PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT_S 0
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#define PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT(x) (((x) << PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT_S) & \
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PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT_M)
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/* Transmit descriptor fields */
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#define XCT_MACTX_T 0x8000000000000000ull
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#define XCT_MACTX_ST 0x4000000000000000ull
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#define XCT_MACTX_NORES 0x0000000000000000ull
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#define XCT_MACTX_8BRES 0x1000000000000000ull
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#define XCT_MACTX_24BRES 0x2000000000000000ull
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#define XCT_MACTX_40BRES 0x3000000000000000ull
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#define XCT_MACTX_I 0x0800000000000000ull
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#define XCT_MACTX_O 0x0400000000000000ull
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#define XCT_MACTX_E 0x0200000000000000ull
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#define XCT_MACTX_VLAN_M 0x0180000000000000ull
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#define XCT_MACTX_VLAN_NOP 0x0000000000000000ull
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#define XCT_MACTX_VLAN_REMOVE 0x0080000000000000ull
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#define XCT_MACTX_VLAN_INSERT 0x0100000000000000ull
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#define XCT_MACTX_VLAN_REPLACE 0x0180000000000000ull
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#define XCT_MACTX_CRC_M 0x0060000000000000ull
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#define XCT_MACTX_CRC_NOP 0x0000000000000000ull
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#define XCT_MACTX_CRC_INSERT 0x0020000000000000ull
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#define XCT_MACTX_CRC_PAD 0x0040000000000000ull
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#define XCT_MACTX_CRC_REPLACE 0x0060000000000000ull
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#define XCT_MACTX_SS 0x0010000000000000ull
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#define XCT_MACTX_LLEN_M 0x00007fff00000000ull
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#define XCT_MACTX_LLEN_S 32ull
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#define XCT_MACTX_LLEN(x) ((((long)(x)) << XCT_MACTX_LLEN_S) & \
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XCT_MACTX_LLEN_M)
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#define XCT_MACTX_IPH_M 0x00000000f8000000ull
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#define XCT_MACTX_IPH_S 27ull
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#define XCT_MACTX_IPH(x) ((((long)(x)) << XCT_MACTX_IPH_S) & \
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XCT_MACTX_IPH_M)
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#define XCT_MACTX_IPO_M 0x0000000007c00000ull
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#define XCT_MACTX_IPO_S 22ull
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#define XCT_MACTX_IPO(x) ((((long)(x)) << XCT_MACTX_IPO_S) & \
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XCT_MACTX_IPO_M)
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#define XCT_MACTX_CSUM_M 0x0000000000000060ull
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#define XCT_MACTX_CSUM_NOP 0x0000000000000000ull
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#define XCT_MACTX_CSUM_TCP 0x0000000000000040ull
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#define XCT_MACTX_CSUM_UDP 0x0000000000000060ull
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#define XCT_MACTX_V6 0x0000000000000010ull
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#define XCT_MACTX_C 0x0000000000000004ull
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#define XCT_MACTX_AL2 0x0000000000000002ull
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#define XCT_PTR_T 0x8000000000000000ull
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#define XCT_PTR_LEN_M 0x7ffff00000000000ull
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#define XCT_PTR_LEN_S 44
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#define XCT_PTR_LEN(x) ((((long)(x)) << XCT_PTR_LEN_S) & \
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XCT_PTR_LEN_M)
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#define XCT_PTR_ADDR_M 0x00000fffffffffffull
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#define XCT_PTR_ADDR_S 0
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#define XCT_PTR_ADDR(x) ((((long)(x)) << XCT_PTR_ADDR_S) & \
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XCT_PTR_ADDR_M)
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/* Function descriptor fields */
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#define XCT_FUN_T 0x8000000000000000ull
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#define XCT_FUN_ST 0x4000000000000000ull
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#define XCT_FUN_NORES 0x0000000000000000ull
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#define XCT_FUN_8BRES 0x1000000000000000ull
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#define XCT_FUN_24BRES 0x2000000000000000ull
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#define XCT_FUN_40BRES 0x3000000000000000ull
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#define XCT_FUN_I 0x0800000000000000ull
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#define XCT_FUN_O 0x0400000000000000ull
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#define XCT_FUN_E 0x0200000000000000ull
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#define XCT_FUN_FUN_S 54
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#define XCT_FUN_FUN_M 0x01c0000000000000ull
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#define XCT_FUN_FUN(num) ((((long)(num)) << XCT_FUN_FUN_S) & \
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XCT_FUN_FUN_M)
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#define XCT_FUN_CRM_NOP 0x0000000000000000ull
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#define XCT_FUN_CRM_SIG 0x0008000000000000ull
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#define XCT_FUN_CRM_ENC 0x0010000000000000ull
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#define XCT_FUN_CRM_DEC 0x0018000000000000ull
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#define XCT_FUN_CRM_SIG_ENC 0x0020000000000000ull
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#define XCT_FUN_CRM_ENC_SIG 0x0028000000000000ull
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#define XCT_FUN_CRM_SIG_DEC 0x0030000000000000ull
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#define XCT_FUN_CRM_DEC_SIG 0x0038000000000000ull
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#define XCT_FUN_LLEN_M 0x0007ffff00000000ull
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#define XCT_FUN_LLEN_S 32ULL
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#define XCT_FUN_LLEN(x) ((((long)(x)) << XCT_FUN_LLEN_S) & \
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XCT_FUN_LLEN_M)
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#define XCT_FUN_SHL_M 0x00000000f8000000ull
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#define XCT_FUN_SHL_S 27ull
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#define XCT_FUN_SHL(x) ((((long)(x)) << XCT_FUN_SHL_S) & \
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XCT_FUN_SHL_M)
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#define XCT_FUN_CHL_M 0x0000000007c00000ull
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#define XCT_FUN_CHL_S 22ull
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#define XCT_FUN_CHL(x) ((((long)(x)) << XCT_FUN_CHL_S) & \
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XCT_FUN_CHL_M)
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#define XCT_FUN_HSZ_M 0x00000000003c0000ull
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#define XCT_FUN_HSZ_S 18ull
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#define XCT_FUN_HSZ(x) ((((long)(x)) << XCT_FUN_HSZ_S) & \
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XCT_FUN_HSZ_M)
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#define XCT_FUN_ALG_DES 0x0000000000000000ull
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#define XCT_FUN_ALG_3DES 0x0000000000008000ull
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#define XCT_FUN_ALG_AES 0x0000000000010000ull
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#define XCT_FUN_ALG_ARC 0x0000000000018000ull
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#define XCT_FUN_ALG_KASUMI 0x0000000000020000ull
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#define XCT_FUN_BCM_ECB 0x0000000000000000ull
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#define XCT_FUN_BCM_CBC 0x0000000000001000ull
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#define XCT_FUN_BCM_CFB 0x0000000000002000ull
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#define XCT_FUN_BCM_OFB 0x0000000000003000ull
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#define XCT_FUN_BCM_CNT 0x0000000000003800ull
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#define XCT_FUN_BCM_KAS_F8 0x0000000000002800ull
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#define XCT_FUN_BCM_KAS_F9 0x0000000000001800ull
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#define XCT_FUN_BCP_NO_PAD 0x0000000000000000ull
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#define XCT_FUN_BCP_ZRO 0x0000000000000200ull
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#define XCT_FUN_BCP_PL 0x0000000000000400ull
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#define XCT_FUN_BCP_INCR 0x0000000000000600ull
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#define XCT_FUN_SIG_MD5 (0ull << 4)
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#define XCT_FUN_SIG_SHA1 (2ull << 4)
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#define XCT_FUN_SIG_HMAC_MD5 (8ull << 4)
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#define XCT_FUN_SIG_HMAC_SHA1 (10ull << 4)
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#define XCT_FUN_A 0x0000000000000008ull
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#define XCT_FUN_C 0x0000000000000004ull
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#define XCT_FUN_AL2 0x0000000000000002ull
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#define XCT_FUN_SE 0x0000000000000001ull
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#define XCT_FUN_SRC_PTR(len, addr) (XCT_PTR_LEN(len) | XCT_PTR_ADDR(addr))
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#define XCT_FUN_DST_PTR(len, addr) (XCT_FUN_SRC_PTR(len, addr) | \
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0x8000000000000000ull)
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#define XCT_CTRL_HDR_FUN_NUM_M 0x01c0000000000000ull
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#define XCT_CTRL_HDR_FUN_NUM_S 54
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#define XCT_CTRL_HDR_LEN_M 0x0007ffff00000000ull
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#define XCT_CTRL_HDR_LEN_S 32
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#define XCT_CTRL_HDR_REG_M 0x00000000000000ffull
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#define XCT_CTRL_HDR_REG_S 0
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#define XCT_CTRL_HDR(funcN,len,reg) (0x9400000000000000ull | \
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((((long)(funcN)) << XCT_CTRL_HDR_FUN_NUM_S) \
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& XCT_CTRL_HDR_FUN_NUM_M) | \
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((((long)(len)) << \
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XCT_CTRL_HDR_LEN_S) & XCT_CTRL_HDR_LEN_M) | \
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((((long)(reg)) << \
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XCT_CTRL_HDR_REG_S) & XCT_CTRL_HDR_REG_M))
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/* Function config command options */
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#define DMA_CALGO_DES 0x00
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#define DMA_CALGO_3DES 0x01
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#define DMA_CALGO_AES 0x02
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#define DMA_CALGO_ARC 0x03
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#define DMA_FN_CIV0 0x02
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#define DMA_FN_CIV1 0x03
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#define DMA_FN_HKEY0 0x0a
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#define XCT_PTR_ADDR_LEN(ptr) ((ptr) & XCT_PTR_ADDR_M), \
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(((ptr) & XCT_PTR_LEN_M) >> XCT_PTR_LEN_S)
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#endif /* PASEMI_FNU_H */
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