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openwrt/target/linux/generic/files/crypto/ocf/hifn/hifn7751.c

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/* $OpenBSD: hifn7751.c,v 1.120 2002/05/17 00:33:34 deraadt Exp $ */
/*-
* Invertex AEON / Hifn 7751 driver
* Copyright (c) 1999 Invertex Inc. All rights reserved.
* Copyright (c) 1999 Theo de Raadt
* Copyright (c) 2000-2001 Network Security Technologies, Inc.
* http://www.netsec.net
* Copyright (c) 2003 Hifn Inc.
*
* This driver is based on a previous driver by Invertex, for which they
* requested: Please send any comments, feedback, bug-fixes, or feature
* requests to software@invertex.com.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Effort sponsored in part by the Defense Advanced Research Projects
* Agency (DARPA) and Air Force Research Laboratory, Air Force
* Materiel Command, USAF, under agreement number F30602-01-2-0537.
*
*
__FBSDID("$FreeBSD: src/sys/dev/hifn/hifn7751.c,v 1.40 2007/03/21 03:42:49 sam Exp $");
*/
/*
* Driver for various Hifn encryption processors.
*/
#ifndef AUTOCONF_INCLUDED
#include <linux/config.h>
#endif
#include <linux/module.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/wait.h>
#include <linux/sched.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/random.h>
#include <linux/version.h>
#include <linux/skbuff.h>
#include <asm/io.h>
#include <cryptodev.h>
#include <uio.h>
#include <hifn/hifn7751reg.h>
#include <hifn/hifn7751var.h>
#if 1
#define DPRINTF(a...) if (hifn_debug) { \
printk("%s: ", sc ? \
device_get_nameunit(sc->sc_dev) : "hifn"); \
printk(a); \
} else
#else
#define DPRINTF(a...)
#endif
static inline int
pci_get_revid(struct pci_dev *dev)
{
u8 rid = 0;
pci_read_config_byte(dev, PCI_REVISION_ID, &rid);
return rid;
}
static struct hifn_stats hifnstats;
#define debug hifn_debug
int hifn_debug = 0;
module_param(hifn_debug, int, 0644);
MODULE_PARM_DESC(hifn_debug, "Enable debug");
int hifn_maxbatch = 1;
module_param(hifn_maxbatch, int, 0644);
MODULE_PARM_DESC(hifn_maxbatch, "max ops to batch w/o interrupt");
int hifn_cache_linesize = 0x10;
module_param(hifn_cache_linesize, int, 0444);
MODULE_PARM_DESC(hifn_cache_linesize, "PCI config cache line size");
#ifdef MODULE_PARM
char *hifn_pllconfig = NULL;
MODULE_PARM(hifn_pllconfig, "s");
#else
char hifn_pllconfig[32]; /* This setting is RO after loading */
module_param_string(hifn_pllconfig, hifn_pllconfig, 32, 0444);
#endif
MODULE_PARM_DESC(hifn_pllconfig, "PLL config, ie., pci66, ext33, ...");
#ifdef HIFN_VULCANDEV
#include <sys/conf.h>
#include <sys/uio.h>
static struct cdevsw vulcanpk_cdevsw; /* forward declaration */
#endif
/*
* Prototypes and count for the pci_device structure
*/
static int hifn_probe(struct pci_dev *dev, const struct pci_device_id *ent);
static void hifn_remove(struct pci_dev *dev);
static int hifn_newsession(device_t, u_int32_t *, struct cryptoini *);
static int hifn_freesession(device_t, u_int64_t);
static int hifn_process(device_t, struct cryptop *, int);
static device_method_t hifn_methods = {
/* crypto device methods */
DEVMETHOD(cryptodev_newsession, hifn_newsession),
DEVMETHOD(cryptodev_freesession,hifn_freesession),
DEVMETHOD(cryptodev_process, hifn_process),
};
static void hifn_reset_board(struct hifn_softc *, int);
static void hifn_reset_puc(struct hifn_softc *);
static void hifn_puc_wait(struct hifn_softc *);
static int hifn_enable_crypto(struct hifn_softc *);
static void hifn_set_retry(struct hifn_softc *sc);
static void hifn_init_dma(struct hifn_softc *);
static void hifn_init_pci_registers(struct hifn_softc *);
static int hifn_sramsize(struct hifn_softc *);
static int hifn_dramsize(struct hifn_softc *);
static int hifn_ramtype(struct hifn_softc *);
static void hifn_sessions(struct hifn_softc *);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19)
static irqreturn_t hifn_intr(int irq, void *arg);
#else
static irqreturn_t hifn_intr(int irq, void *arg, struct pt_regs *regs);
#endif
static u_int hifn_write_command(struct hifn_command *, u_int8_t *);
static u_int32_t hifn_next_signature(u_int32_t a, u_int cnt);
static void hifn_callback(struct hifn_softc *, struct hifn_command *, u_int8_t *);
static int hifn_crypto(struct hifn_softc *, struct hifn_command *, struct cryptop *, int);
static int hifn_readramaddr(struct hifn_softc *, int, u_int8_t *);
static int hifn_writeramaddr(struct hifn_softc *, int, u_int8_t *);
static int hifn_dmamap_load_src(struct hifn_softc *, struct hifn_command *);
static int hifn_dmamap_load_dst(struct hifn_softc *, struct hifn_command *);
static int hifn_init_pubrng(struct hifn_softc *);
static void hifn_tick(unsigned long arg);
static void hifn_abort(struct hifn_softc *);
static void hifn_alloc_slot(struct hifn_softc *, int *, int *, int *, int *);
static void hifn_write_reg_0(struct hifn_softc *, bus_size_t, u_int32_t);
static void hifn_write_reg_1(struct hifn_softc *, bus_size_t, u_int32_t);
#ifdef CONFIG_OCF_RANDOMHARVEST
static int hifn_read_random(void *arg, u_int32_t *buf, int len);
#endif
#define HIFN_MAX_CHIPS 8
static struct hifn_softc *hifn_chip_idx[HIFN_MAX_CHIPS];
static __inline u_int32_t
READ_REG_0(struct hifn_softc *sc, bus_size_t reg)
{
u_int32_t v = readl(sc->sc_bar0 + reg);
sc->sc_bar0_lastreg = (bus_size_t) -1;
return (v);
}
#define WRITE_REG_0(sc, reg, val) hifn_write_reg_0(sc, reg, val)
static __inline u_int32_t
READ_REG_1(struct hifn_softc *sc, bus_size_t reg)
{
u_int32_t v = readl(sc->sc_bar1 + reg);
sc->sc_bar1_lastreg = (bus_size_t) -1;
return (v);
}
#define WRITE_REG_1(sc, reg, val) hifn_write_reg_1(sc, reg, val)
/*
* map in a given buffer (great on some arches :-)
*/
static int
pci_map_uio(struct hifn_softc *sc, struct hifn_operand *buf, struct uio *uio)
{
struct iovec *iov = uio->uio_iov;
DPRINTF("%s()\n", __FUNCTION__);
buf->mapsize = 0;
for (buf->nsegs = 0; buf->nsegs < uio->uio_iovcnt; ) {
buf->segs[buf->nsegs].ds_addr = pci_map_single(sc->sc_pcidev,
iov->iov_base, iov->iov_len,
PCI_DMA_BIDIRECTIONAL);
buf->segs[buf->nsegs].ds_len = iov->iov_len;
buf->mapsize += iov->iov_len;
iov++;
buf->nsegs++;
}
/* identify this buffer by the first segment */
buf->map = (void *) buf->segs[0].ds_addr;
return(0);
}
/*
* map in a given sk_buff
*/
static int
pci_map_skb(struct hifn_softc *sc,struct hifn_operand *buf,struct sk_buff *skb)
{
int i;
DPRINTF("%s()\n", __FUNCTION__);
buf->mapsize = 0;
buf->segs[0].ds_addr = pci_map_single(sc->sc_pcidev,
skb->data, skb_headlen(skb), PCI_DMA_BIDIRECTIONAL);
buf->segs[0].ds_len = skb_headlen(skb);
buf->mapsize += buf->segs[0].ds_len;
buf->nsegs = 1;
for (i = 0; i < skb_shinfo(skb)->nr_frags; ) {
buf->segs[buf->nsegs].ds_len = skb_shinfo(skb)->frags[i].size;
buf->segs[buf->nsegs].ds_addr = pci_map_single(sc->sc_pcidev,
page_address(skb_shinfo(skb)->frags[i].page) +
skb_shinfo(skb)->frags[i].page_offset,
buf->segs[buf->nsegs].ds_len, PCI_DMA_BIDIRECTIONAL);
buf->mapsize += buf->segs[buf->nsegs].ds_len;
buf->nsegs++;
}
/* identify this buffer by the first segment */
buf->map = (void *) buf->segs[0].ds_addr;
return(0);
}
/*
* map in a given contiguous buffer
*/
static int
pci_map_buf(struct hifn_softc *sc,struct hifn_operand *buf, void *b, int len)
{
DPRINTF("%s()\n", __FUNCTION__);
buf->mapsize = 0;
buf->segs[0].ds_addr = pci_map_single(sc->sc_pcidev,
b, len, PCI_DMA_BIDIRECTIONAL);
buf->segs[0].ds_len = len;
buf->mapsize += buf->segs[0].ds_len;
buf->nsegs = 1;
/* identify this buffer by the first segment */
buf->map = (void *) buf->segs[0].ds_addr;
return(0);
}
#if 0 /* not needed at this time */
static void
pci_sync_iov(struct hifn_softc *sc, struct hifn_operand *buf)
{
int i;
DPRINTF("%s()\n", __FUNCTION__);
for (i = 0; i < buf->nsegs; i++)
pci_dma_sync_single_for_cpu(sc->sc_pcidev, buf->segs[i].ds_addr,
buf->segs[i].ds_len, PCI_DMA_BIDIRECTIONAL);
}
#endif
static void
pci_unmap_buf(struct hifn_softc *sc, struct hifn_operand *buf)
{
int i;
DPRINTF("%s()\n", __FUNCTION__);
for (i = 0; i < buf->nsegs; i++) {
pci_unmap_single(sc->sc_pcidev, buf->segs[i].ds_addr,
buf->segs[i].ds_len, PCI_DMA_BIDIRECTIONAL);
buf->segs[i].ds_addr = 0;
buf->segs[i].ds_len = 0;
}
buf->nsegs = 0;
buf->mapsize = 0;
buf->map = 0;
}
static const char*
hifn_partname(struct hifn_softc *sc)
{
/* XXX sprintf numbers when not decoded */
switch (pci_get_vendor(sc->sc_pcidev)) {
case PCI_VENDOR_HIFN:
switch (pci_get_device(sc->sc_pcidev)) {
case PCI_PRODUCT_HIFN_6500: return "Hifn 6500";
case PCI_PRODUCT_HIFN_7751: return "Hifn 7751";
case PCI_PRODUCT_HIFN_7811: return "Hifn 7811";
case PCI_PRODUCT_HIFN_7951: return "Hifn 7951";
case PCI_PRODUCT_HIFN_7955: return "Hifn 7955";
case PCI_PRODUCT_HIFN_7956: return "Hifn 7956";
}
return "Hifn unknown-part";
case PCI_VENDOR_INVERTEX:
switch (pci_get_device(sc->sc_pcidev)) {
case PCI_PRODUCT_INVERTEX_AEON: return "Invertex AEON";
}
return "Invertex unknown-part";
case PCI_VENDOR_NETSEC:
switch (pci_get_device(sc->sc_pcidev)) {
case PCI_PRODUCT_NETSEC_7751: return "NetSec 7751";
}
return "NetSec unknown-part";
}
return "Unknown-vendor unknown-part";
}
static u_int
checkmaxmin(struct pci_dev *dev, const char *what, u_int v, u_int min, u_int max)
{
struct hifn_softc *sc = pci_get_drvdata(dev);
if (v > max) {
device_printf(sc->sc_dev, "Warning, %s %u out of range, "
"using max %u\n", what, v, max);
v = max;
} else if (v < min) {
device_printf(sc->sc_dev, "Warning, %s %u out of range, "
"using min %u\n", what, v, min);
v = min;
}
return v;
}
/*
* Select PLL configuration for 795x parts. This is complicated in
* that we cannot determine the optimal parameters without user input.
* The reference clock is derived from an external clock through a
* multiplier. The external clock is either the host bus (i.e. PCI)
* or an external clock generator. When using the PCI bus we assume
* the clock is either 33 or 66 MHz; for an external source we cannot
* tell the speed.
*
* PLL configuration is done with a string: "pci" for PCI bus, or "ext"
* for an external source, followed by the frequency. We calculate
* the appropriate multiplier and PLL register contents accordingly.
* When no configuration is given we default to "pci66" since that
* always will allow the card to work. If a card is using the PCI
* bus clock and in a 33MHz slot then it will be operating at half
* speed until the correct information is provided.
*
* We use a default setting of "ext66" because according to Mike Ham
* of HiFn, almost every board in existence has an external crystal
* populated at 66Mhz. Using PCI can be a problem on modern motherboards,
* because PCI33 can have clocks from 0 to 33Mhz, and some have
* non-PCI-compliant spread-spectrum clocks, which can confuse the pll.
*/
static void
hifn_getpllconfig(struct pci_dev *dev, u_int *pll)
{
const char *pllspec = hifn_pllconfig;
u_int freq, mul, fl, fh;
u_int32_t pllconfig;
char *nxt;
if (pllspec == NULL)
pllspec = "ext66";
fl = 33, fh = 66;
pllconfig = 0;
if (strncmp(pllspec, "ext", 3) == 0) {
pllspec += 3;
pllconfig |= HIFN_PLL_REF_SEL;
switch (pci_get_device(dev)) {
case PCI_PRODUCT_HIFN_7955:
case PCI_PRODUCT_HIFN_7956:
fl = 20, fh = 100;
break;
#ifdef notyet
case PCI_PRODUCT_HIFN_7954:
fl = 20, fh = 66;
break;
#endif
}
} else if (strncmp(pllspec, "pci", 3) == 0)
pllspec += 3;
freq = strtoul(pllspec, &nxt, 10);
if (nxt == pllspec)
freq = 66;
else
freq = checkmaxmin(dev, "frequency", freq, fl, fh);
/*
* Calculate multiplier. We target a Fck of 266 MHz,
* allowing only even values, possibly rounded down.
* Multipliers > 8 must set the charge pump current.
*/
mul = checkmaxmin(dev, "PLL divisor", (266 / freq) &~ 1, 2, 12);
pllconfig |= (mul / 2 - 1) << HIFN_PLL_ND_SHIFT;
if (mul > 8)
pllconfig |= HIFN_PLL_IS;
*pll = pllconfig;
}
/*
* Attach an interface that successfully probed.
*/
static int
hifn_probe(struct pci_dev *dev, const struct pci_device_id *ent)
{
struct hifn_softc *sc = NULL;
char rbase;
u_int16_t ena, rev;
int rseg, rc;
unsigned long mem_start, mem_len;
static int num_chips = 0;
DPRINTF("%s()\n", __FUNCTION__);
if (pci_enable_device(dev) < 0)
return(-ENODEV);
#ifdef CONFIG_HAVE_PCI_SET_MWI
if (pci_set_mwi(dev))
return(-ENODEV);
#endif
if (!dev->irq) {
printk("hifn: found device with no IRQ assigned. check BIOS settings!");
pci_disable_device(dev);
return(-ENODEV);
}
sc = (struct hifn_softc *) kmalloc(sizeof(*sc), GFP_KERNEL);
if (!sc)
return(-ENOMEM);
memset(sc, 0, sizeof(*sc));
softc_device_init(sc, "hifn", num_chips, hifn_methods);
sc->sc_pcidev = dev;
sc->sc_irq = -1;
sc->sc_cid = -1;
sc->sc_num = num_chips++;
if (sc->sc_num < HIFN_MAX_CHIPS)
hifn_chip_idx[sc->sc_num] = sc;
pci_set_drvdata(sc->sc_pcidev, sc);
spin_lock_init(&sc->sc_mtx);
/* XXX handle power management */
/*
* The 7951 and 795x have a random number generator and
* public key support; note this.
*/
if (pci_get_vendor(dev) == PCI_VENDOR_HIFN &&
(pci_get_device(dev) == PCI_PRODUCT_HIFN_7951 ||
pci_get_device(dev) == PCI_PRODUCT_HIFN_7955 ||
pci_get_device(dev) == PCI_PRODUCT_HIFN_7956))
sc->sc_flags = HIFN_HAS_RNG | HIFN_HAS_PUBLIC;
/*
* The 7811 has a random number generator and
* we also note it's identity 'cuz of some quirks.
*/
if (pci_get_vendor(dev) == PCI_VENDOR_HIFN &&
pci_get_device(dev) == PCI_PRODUCT_HIFN_7811)
sc->sc_flags |= HIFN_IS_7811 | HIFN_HAS_RNG;
/*
* The 795x parts support AES.
*/
if (pci_get_vendor(dev) == PCI_VENDOR_HIFN &&
(pci_get_device(dev) == PCI_PRODUCT_HIFN_7955 ||
pci_get_device(dev) == PCI_PRODUCT_HIFN_7956)) {
sc->sc_flags |= HIFN_IS_7956 | HIFN_HAS_AES;
/*
* Select PLL configuration. This depends on the
* bus and board design and must be manually configured
* if the default setting is unacceptable.
*/
hifn_getpllconfig(dev, &sc->sc_pllconfig);
}
/*
* Setup PCI resources. Note that we record the bus
* tag and handle for each register mapping, this is
* used by the READ_REG_0, WRITE_REG_0, READ_REG_1,
* and WRITE_REG_1 macros throughout the driver.
*/
mem_start = pci_resource_start(sc->sc_pcidev, 0);
mem_len = pci_resource_len(sc->sc_pcidev, 0);
sc->sc_bar0 = (ocf_iomem_t) ioremap(mem_start, mem_len);
if (!sc->sc_bar0) {
device_printf(sc->sc_dev, "cannot map bar%d register space\n", 0);
goto fail;
}
sc->sc_bar0_lastreg = (bus_size_t) -1;
mem_start = pci_resource_start(sc->sc_pcidev, 1);
mem_len = pci_resource_len(sc->sc_pcidev, 1);
sc->sc_bar1 = (ocf_iomem_t) ioremap(mem_start, mem_len);
if (!sc->sc_bar1) {
device_printf(sc->sc_dev, "cannot map bar%d register space\n", 1);
goto fail;
}
sc->sc_bar1_lastreg = (bus_size_t) -1;
/* fix up the bus size */
if (pci_set_dma_mask(dev, DMA_32BIT_MASK)) {
device_printf(sc->sc_dev, "No usable DMA configuration, aborting.\n");
goto fail;
}
if (pci_set_consistent_dma_mask(dev, DMA_32BIT_MASK)) {
device_printf(sc->sc_dev,
"No usable consistent DMA configuration, aborting.\n");
goto fail;
}
hifn_set_retry(sc);
/*
* Setup the area where the Hifn DMA's descriptors
* and associated data structures.
*/
sc->sc_dma = (struct hifn_dma *) pci_alloc_consistent(dev,
sizeof(*sc->sc_dma),
&sc->sc_dma_physaddr);
if (!sc->sc_dma) {
device_printf(sc->sc_dev, "cannot alloc sc_dma\n");
goto fail;
}
bzero(sc->sc_dma, sizeof(*sc->sc_dma));
/*
* Reset the board and do the ``secret handshake''
* to enable the crypto support. Then complete the
* initialization procedure by setting up the interrupt
* and hooking in to the system crypto support so we'll
* get used for system services like the crypto device,
* IPsec, RNG device, etc.
*/
hifn_reset_board(sc, 0);
if (hifn_enable_crypto(sc) != 0) {
device_printf(sc->sc_dev, "crypto enabling failed\n");
goto fail;
}
hifn_reset_puc(sc);
hifn_init_dma(sc);
hifn_init_pci_registers(sc);
pci_set_master(sc->sc_pcidev);
/* XXX can't dynamically determine ram type for 795x; force dram */
if (sc->sc_flags & HIFN_IS_7956)
sc->sc_drammodel = 1;
else if (hifn_ramtype(sc))
goto fail;
if (sc->sc_drammodel == 0)
hifn_sramsize(sc);
else
hifn_dramsize(sc);
/*
* Workaround for NetSec 7751 rev A: half ram size because two
* of the address lines were left floating
*/
if (pci_get_vendor(dev) == PCI_VENDOR_NETSEC &&
pci_get_device(dev) == PCI_PRODUCT_NETSEC_7751 &&
pci_get_revid(dev) == 0x61) /*XXX???*/
sc->sc_ramsize >>= 1;
/*
* Arrange the interrupt line.
*/
rc = request_irq(dev->irq, hifn_intr, IRQF_SHARED, "hifn", sc);
if (rc) {
device_printf(sc->sc_dev, "could not map interrupt: %d\n", rc);
goto fail;
}
sc->sc_irq = dev->irq;
hifn_sessions(sc);
/*
* NB: Keep only the low 16 bits; this masks the chip id
* from the 7951.
*/
rev = READ_REG_1(sc, HIFN_1_REVID) & 0xffff;
rseg = sc->sc_ramsize / 1024;
rbase = 'K';
if (sc->sc_ramsize >= (1024 * 1024)) {
rbase = 'M';
rseg /= 1024;
}
device_printf(sc->sc_dev, "%s, rev %u, %d%cB %cram",
hifn_partname(sc), rev,
rseg, rbase, sc->sc_drammodel ? 'd' : 's');
if (sc->sc_flags & HIFN_IS_7956)
printf(", pll=0x%x<%s clk, %ux mult>",
sc->sc_pllconfig,
sc->sc_pllconfig & HIFN_PLL_REF_SEL ? "ext" : "pci",
2 + 2*((sc->sc_pllconfig & HIFN_PLL_ND) >> 11));
printf("\n");
sc->sc_cid = crypto_get_driverid(softc_get_device(sc),CRYPTOCAP_F_HARDWARE);
if (sc->sc_cid < 0) {
device_printf(sc->sc_dev, "could not get crypto driver id\n");
goto fail;
}
WRITE_REG_0(sc, HIFN_0_PUCNFG,
READ_REG_0(sc, HIFN_0_PUCNFG) | HIFN_PUCNFG_CHIPID);
ena = READ_REG_0(sc, HIFN_0_PUSTAT) & HIFN_PUSTAT_CHIPENA;
switch (ena) {
case HIFN_PUSTAT_ENA_2:
crypto_register(sc->sc_cid, CRYPTO_3DES_CBC, 0, 0);
crypto_register(sc->sc_cid, CRYPTO_ARC4, 0, 0);
if (sc->sc_flags & HIFN_HAS_AES)
crypto_register(sc->sc_cid, CRYPTO_AES_CBC, 0, 0);
/*FALLTHROUGH*/
case HIFN_PUSTAT_ENA_1:
crypto_register(sc->sc_cid, CRYPTO_MD5, 0, 0);
crypto_register(sc->sc_cid, CRYPTO_SHA1, 0, 0);
crypto_register(sc->sc_cid, CRYPTO_MD5_HMAC, 0, 0);
crypto_register(sc->sc_cid, CRYPTO_SHA1_HMAC, 0, 0);
crypto_register(sc->sc_cid, CRYPTO_DES_CBC, 0, 0);
break;
}
if (sc->sc_flags & (HIFN_HAS_PUBLIC | HIFN_HAS_RNG))
hifn_init_pubrng(sc);
init_timer(&sc->sc_tickto);
sc->sc_tickto.function = hifn_tick;
sc->sc_tickto.data = (unsigned long) sc->sc_num;
mod_timer(&sc->sc_tickto, jiffies + HZ);
return (0);
fail:
if (sc->sc_cid >= 0)
crypto_unregister_all(sc->sc_cid);
if (sc->sc_irq != -1)
free_irq(sc->sc_irq, sc);
if (sc->sc_dma) {
/* Turn off DMA polling */
WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
pci_free_consistent(sc->sc_pcidev,
sizeof(*sc->sc_dma),
sc->sc_dma, sc->sc_dma_physaddr);
}
kfree(sc);
return (-ENXIO);
}
/*
* Detach an interface that successfully probed.
*/
static void
hifn_remove(struct pci_dev *dev)
{
struct hifn_softc *sc = pci_get_drvdata(dev);
unsigned long l_flags;
DPRINTF("%s()\n", __FUNCTION__);
KASSERT(sc != NULL, ("hifn_detach: null software carrier!"));
/* disable interrupts */
HIFN_LOCK(sc);
WRITE_REG_1(sc, HIFN_1_DMA_IER, 0);
HIFN_UNLOCK(sc);
/*XXX other resources */
del_timer_sync(&sc->sc_tickto);
/* Turn off DMA polling */
WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
crypto_unregister_all(sc->sc_cid);
free_irq(sc->sc_irq, sc);
pci_free_consistent(sc->sc_pcidev, sizeof(*sc->sc_dma),
sc->sc_dma, sc->sc_dma_physaddr);
}
static int
hifn_init_pubrng(struct hifn_softc *sc)
{
int i;
DPRINTF("%s()\n", __FUNCTION__);
if ((sc->sc_flags & HIFN_IS_7811) == 0) {
/* Reset 7951 public key/rng engine */
WRITE_REG_1(sc, HIFN_1_PUB_RESET,
READ_REG_1(sc, HIFN_1_PUB_RESET) | HIFN_PUBRST_RESET);
for (i = 0; i < 100; i++) {
DELAY(1000);
if ((READ_REG_1(sc, HIFN_1_PUB_RESET) &
HIFN_PUBRST_RESET) == 0)
break;
}
if (i == 100) {
device_printf(sc->sc_dev, "public key init failed\n");
return (1);
}
}
/* Enable the rng, if available */
#ifdef CONFIG_OCF_RANDOMHARVEST
if (sc->sc_flags & HIFN_HAS_RNG) {
if (sc->sc_flags & HIFN_IS_7811) {
u_int32_t r;
r = READ_REG_1(sc, HIFN_1_7811_RNGENA);
if (r & HIFN_7811_RNGENA_ENA) {
r &= ~HIFN_7811_RNGENA_ENA;
WRITE_REG_1(sc, HIFN_1_7811_RNGENA, r);
}
WRITE_REG_1(sc, HIFN_1_7811_RNGCFG,
HIFN_7811_RNGCFG_DEFL);
r |= HIFN_7811_RNGENA_ENA;
WRITE_REG_1(sc, HIFN_1_7811_RNGENA, r);
} else
WRITE_REG_1(sc, HIFN_1_RNG_CONFIG,
READ_REG_1(sc, HIFN_1_RNG_CONFIG) |
HIFN_RNGCFG_ENA);
sc->sc_rngfirst = 1;
crypto_rregister(sc->sc_cid, hifn_read_random, sc);
}
#endif
/* Enable public key engine, if available */
if (sc->sc_flags & HIFN_HAS_PUBLIC) {
WRITE_REG_1(sc, HIFN_1_PUB_IEN, HIFN_PUBIEN_DONE);
sc->sc_dmaier |= HIFN_DMAIER_PUBDONE;
WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
#ifdef HIFN_VULCANDEV
sc->sc_pkdev = make_dev(&vulcanpk_cdevsw, 0,
UID_ROOT, GID_WHEEL, 0666,
"vulcanpk");
sc->sc_pkdev->si_drv1 = sc;
#endif
}
return (0);
}
#ifdef CONFIG_OCF_RANDOMHARVEST
static int
hifn_read_random(void *arg, u_int32_t *buf, int len)
{
struct hifn_softc *sc = (struct hifn_softc *) arg;
u_int32_t sts;
int i, rc = 0;
if (len <= 0)
return rc;
if (sc->sc_flags & HIFN_IS_7811) {
/* ONLY VALID ON 7811!!!! */
for (i = 0; i < 5; i++) {
sts = READ_REG_1(sc, HIFN_1_7811_RNGSTS);
if (sts & HIFN_7811_RNGSTS_UFL) {
device_printf(sc->sc_dev,
"RNG underflow: disabling\n");
/* DAVIDM perhaps return -1 */
break;
}
if ((sts & HIFN_7811_RNGSTS_RDY) == 0)
break;
/*
* There are at least two words in the RNG FIFO
* at this point.
*/
if (rc < len)
buf[rc++] = READ_REG_1(sc, HIFN_1_7811_RNGDAT);
if (rc < len)
buf[rc++] = READ_REG_1(sc, HIFN_1_7811_RNGDAT);
}
} else
buf[rc++] = READ_REG_1(sc, HIFN_1_RNG_DATA);
/* NB: discard first data read */
if (sc->sc_rngfirst) {
sc->sc_rngfirst = 0;
rc = 0;
}
return(rc);
}
#endif /* CONFIG_OCF_RANDOMHARVEST */
static void
hifn_puc_wait(struct hifn_softc *sc)
{
int i;
int reg = HIFN_0_PUCTRL;
if (sc->sc_flags & HIFN_IS_7956) {
reg = HIFN_0_PUCTRL2;
}
for (i = 5000; i > 0; i--) {
DELAY(1);
if (!(READ_REG_0(sc, reg) & HIFN_PUCTRL_RESET))
break;
}
if (!i)
device_printf(sc->sc_dev, "proc unit did not reset(0x%x)\n",
READ_REG_0(sc, HIFN_0_PUCTRL));
}
/*
* Reset the processing unit.
*/
static void
hifn_reset_puc(struct hifn_softc *sc)
{
/* Reset processing unit */
int reg = HIFN_0_PUCTRL;
if (sc->sc_flags & HIFN_IS_7956) {
reg = HIFN_0_PUCTRL2;
}
WRITE_REG_0(sc, reg, HIFN_PUCTRL_DMAENA);
hifn_puc_wait(sc);
}
/*
* Set the Retry and TRDY registers; note that we set them to
* zero because the 7811 locks up when forced to retry (section
* 3.6 of "Specification Update SU-0014-04". Not clear if we
* should do this for all Hifn parts, but it doesn't seem to hurt.
*/
static void
hifn_set_retry(struct hifn_softc *sc)
{
DPRINTF("%s()\n", __FUNCTION__);
/* NB: RETRY only responds to 8-bit reads/writes */
pci_write_config_byte(sc->sc_pcidev, HIFN_RETRY_TIMEOUT, 0);
pci_write_config_dword(sc->sc_pcidev, HIFN_TRDY_TIMEOUT, 0);
/* piggy back the cache line setting here */
pci_write_config_byte(sc->sc_pcidev, PCI_CACHE_LINE_SIZE, hifn_cache_linesize);
}
/*
* Resets the board. Values in the regesters are left as is
* from the reset (i.e. initial values are assigned elsewhere).
*/
static void
hifn_reset_board(struct hifn_softc *sc, int full)
{
u_int32_t reg;
DPRINTF("%s()\n", __FUNCTION__);
/*
* Set polling in the DMA configuration register to zero. 0x7 avoids
* resetting the board and zeros out the other fields.
*/
WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
/*
* Now that polling has been disabled, we have to wait 1 ms
* before resetting the board.
*/
DELAY(1000);
/* Reset the DMA unit */
if (full) {
WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MODE);
DELAY(1000);
} else {
WRITE_REG_1(sc, HIFN_1_DMA_CNFG,
HIFN_DMACNFG_MODE | HIFN_DMACNFG_MSTRESET);
hifn_reset_puc(sc);
}
KASSERT(sc->sc_dma != NULL, ("hifn_reset_board: null DMA tag!"));
bzero(sc->sc_dma, sizeof(*sc->sc_dma));
/* Bring dma unit out of reset */
WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
hifn_puc_wait(sc);
hifn_set_retry(sc);
if (sc->sc_flags & HIFN_IS_7811) {
for (reg = 0; reg < 1000; reg++) {
if (READ_REG_1(sc, HIFN_1_7811_MIPSRST) &
HIFN_MIPSRST_CRAMINIT)
break;
DELAY(1000);
}
if (reg == 1000)
device_printf(sc->sc_dev, ": cram init timeout\n");
} else {
/* set up DMA configuration register #2 */
/* turn off all PK and BAR0 swaps */
WRITE_REG_1(sc, HIFN_1_DMA_CNFG2,
(3 << HIFN_DMACNFG2_INIT_WRITE_BURST_SHIFT)|
(3 << HIFN_DMACNFG2_INIT_READ_BURST_SHIFT)|
(2 << HIFN_DMACNFG2_TGT_WRITE_BURST_SHIFT)|
(2 << HIFN_DMACNFG2_TGT_READ_BURST_SHIFT));
}
}
static u_int32_t
hifn_next_signature(u_int32_t a, u_int cnt)
{
int i;
u_int32_t 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;
}
/*
* Checks to see if crypto is already enabled. If crypto isn't enable,
* "hifn_enable_crypto" is called to enable it. The check is important,
* as enabling crypto twice will lock the board.
*/
static int
hifn_enable_crypto(struct hifn_softc *sc)
{
u_int32_t dmacfg, ramcfg, encl, addr, i;
char offtbl[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00 };
DPRINTF("%s()\n", __FUNCTION__);
ramcfg = READ_REG_0(sc, HIFN_0_PUCNFG);
dmacfg = READ_REG_1(sc, HIFN_1_DMA_CNFG);
/*
* The RAM config register's encrypt level bit needs to be set before
* every read performed on the encryption level register.
*/
WRITE_REG_0(sc, HIFN_0_PUCNFG, ramcfg | HIFN_PUCNFG_CHIPID);
encl = READ_REG_0(sc, HIFN_0_PUSTAT) & HIFN_PUSTAT_CHIPENA;
/*
* Make sure we don't re-unlock. Two unlocks kills chip until the
* next reboot.
*/
if (encl == HIFN_PUSTAT_ENA_1 || encl == HIFN_PUSTAT_ENA_2) {
#ifdef HIFN_DEBUG
if (hifn_debug)
device_printf(sc->sc_dev,
"Strong crypto already enabled!\n");
#endif
goto report;
}
if (encl != 0 && encl != HIFN_PUSTAT_ENA_0) {
#ifdef HIFN_DEBUG
if (hifn_debug)
device_printf(sc->sc_dev,
"Unknown encryption level 0x%x\n", encl);
#endif
return 1;
}
WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_UNLOCK |
HIFN_DMACNFG_MSTRESET | HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
DELAY(1000);
addr = READ_REG_1(sc, HIFN_UNLOCK_SECRET1);
DELAY(1000);
WRITE_REG_1(sc, HIFN_UNLOCK_SECRET2, 0);
DELAY(1000);
for (i = 0; i <= 12; i++) {
addr = hifn_next_signature(addr, offtbl[i] + 0x101);
WRITE_REG_1(sc, HIFN_UNLOCK_SECRET2, addr);
DELAY(1000);
}
WRITE_REG_0(sc, HIFN_0_PUCNFG, ramcfg | HIFN_PUCNFG_CHIPID);
encl = READ_REG_0(sc, HIFN_0_PUSTAT) & HIFN_PUSTAT_CHIPENA;
#ifdef HIFN_DEBUG
if (hifn_debug) {
if (encl != HIFN_PUSTAT_ENA_1 && encl != HIFN_PUSTAT_ENA_2)
device_printf(sc->sc_dev, "Engine is permanently "
"locked until next system reset!\n");
else
device_printf(sc->sc_dev, "Engine enabled "
"successfully!\n");
}
#endif
report:
WRITE_REG_0(sc, HIFN_0_PUCNFG, ramcfg);
WRITE_REG_1(sc, HIFN_1_DMA_CNFG, dmacfg);
switch (encl) {
case HIFN_PUSTAT_ENA_1:
case HIFN_PUSTAT_ENA_2:
break;
case HIFN_PUSTAT_ENA_0:
default:
device_printf(sc->sc_dev, "disabled\n");
break;
}
return 0;
}
/*
* Give initial values to the registers listed in the "Register Space"
* section of the HIFN Software Development reference manual.
*/
static void
hifn_init_pci_registers(struct hifn_softc *sc)
{
DPRINTF("%s()\n", __FUNCTION__);
/* write fixed values needed by the Initialization registers */
WRITE_REG_0(sc, HIFN_0_PUCTRL, HIFN_PUCTRL_DMAENA);
WRITE_REG_0(sc, HIFN_0_FIFOCNFG, HIFN_FIFOCNFG_THRESHOLD);
WRITE_REG_0(sc, HIFN_0_PUIER, HIFN_PUIER_DSTOVER);
/* write all 4 ring address registers */
WRITE_REG_1(sc, HIFN_1_DMA_CRAR, sc->sc_dma_physaddr +
offsetof(struct hifn_dma, cmdr[0]));
WRITE_REG_1(sc, HIFN_1_DMA_SRAR, sc->sc_dma_physaddr +
offsetof(struct hifn_dma, srcr[0]));
WRITE_REG_1(sc, HIFN_1_DMA_DRAR, sc->sc_dma_physaddr +
offsetof(struct hifn_dma, dstr[0]));
WRITE_REG_1(sc, HIFN_1_DMA_RRAR, sc->sc_dma_physaddr +
offsetof(struct hifn_dma, resr[0]));
DELAY(2000);
/* write status register */
WRITE_REG_1(sc, 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 |
((sc->sc_flags & HIFN_HAS_PUBLIC) ?
HIFN_DMACSR_PUBDONE : 0) |
((sc->sc_flags & HIFN_IS_7811) ?
HIFN_DMACSR_ILLW | HIFN_DMACSR_ILLR : 0));
sc->sc_d_busy = sc->sc_r_busy = sc->sc_s_busy = sc->sc_c_busy = 0;
sc->sc_dmaier |= 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 |
((sc->sc_flags & HIFN_IS_7811) ?
HIFN_DMAIER_ILLW | HIFN_DMAIER_ILLR : 0);
sc->sc_dmaier &= ~HIFN_DMAIER_C_WAIT;
WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
if (sc->sc_flags & HIFN_IS_7956) {
u_int32_t pll;
WRITE_REG_0(sc, HIFN_0_PUCNFG, HIFN_PUCNFG_COMPSING |
HIFN_PUCNFG_TCALLPHASES |
HIFN_PUCNFG_TCDRVTOTEM | HIFN_PUCNFG_BUS32);
/* turn off the clocks and insure bypass is set */
pll = READ_REG_1(sc, HIFN_1_PLL);
pll = (pll &~ (HIFN_PLL_PK_CLK_SEL | HIFN_PLL_PE_CLK_SEL))
| HIFN_PLL_BP | HIFN_PLL_MBSET;
WRITE_REG_1(sc, HIFN_1_PLL, pll);
DELAY(10*1000); /* 10ms */
/* change configuration */
pll = (pll &~ HIFN_PLL_CONFIG) | sc->sc_pllconfig;
WRITE_REG_1(sc, HIFN_1_PLL, pll);
DELAY(10*1000); /* 10ms */
/* disable bypass */
pll &= ~HIFN_PLL_BP;
WRITE_REG_1(sc, HIFN_1_PLL, pll);
/* enable clocks with new configuration */
pll |= HIFN_PLL_PK_CLK_SEL | HIFN_PLL_PE_CLK_SEL;
WRITE_REG_1(sc, HIFN_1_PLL, pll);
} else {
WRITE_REG_0(sc, HIFN_0_PUCNFG, HIFN_PUCNFG_COMPSING |
HIFN_PUCNFG_DRFR_128 | HIFN_PUCNFG_TCALLPHASES |
HIFN_PUCNFG_TCDRVTOTEM | HIFN_PUCNFG_BUS32 |
(sc->sc_drammodel ? HIFN_PUCNFG_DRAM : HIFN_PUCNFG_SRAM));
}
WRITE_REG_0(sc, HIFN_0_PUISR, HIFN_PUISR_DSTOVER);
WRITE_REG_1(sc, 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));
}
/*
* The maximum number of sessions supported by the card
* is dependent on the amount of context ram, which
* encryption algorithms are enabled, and how compression
* is configured. This should be configured before this
* routine is called.
*/
static void
hifn_sessions(struct hifn_softc *sc)
{
u_int32_t pucnfg;
int ctxsize;
DPRINTF("%s()\n", __FUNCTION__);
pucnfg = READ_REG_0(sc, HIFN_0_PUCNFG);
if (pucnfg & HIFN_PUCNFG_COMPSING) {
if (pucnfg & HIFN_PUCNFG_ENCCNFG)
ctxsize = 128;
else
ctxsize = 512;
/*
* 7955/7956 has internal context memory of 32K
*/
if (sc->sc_flags & HIFN_IS_7956)
sc->sc_maxses = 32768 / ctxsize;
else
sc->sc_maxses = 1 +
((sc->sc_ramsize - 32768) / ctxsize);
} else
sc->sc_maxses = sc->sc_ramsize / 16384;
if (sc->sc_maxses > 2048)
sc->sc_maxses = 2048;
}
/*
* Determine ram type (sram or dram). Board should be just out of a reset
* state when this is called.
*/
static int
hifn_ramtype(struct hifn_softc *sc)
{
u_int8_t data[8], dataexpect[8];
int i;
for (i = 0; i < sizeof(data); i++)
data[i] = dataexpect[i] = 0x55;
if (hifn_writeramaddr(sc, 0, data))
return (-1);
if (hifn_readramaddr(sc, 0, data))
return (-1);
if (bcmp(data, dataexpect, sizeof(data)) != 0) {
sc->sc_drammodel = 1;
return (0);
}
for (i = 0; i < sizeof(data); i++)
data[i] = dataexpect[i] = 0xaa;
if (hifn_writeramaddr(sc, 0, data))
return (-1);
if (hifn_readramaddr(sc, 0, data))
return (-1);
if (bcmp(data, dataexpect, sizeof(data)) != 0) {
sc->sc_drammodel = 1;
return (0);
}
return (0);
}
#define HIFN_SRAM_MAX (32 << 20)
#define HIFN_SRAM_STEP_SIZE 16384
#define HIFN_SRAM_GRANULARITY (HIFN_SRAM_MAX / HIFN_SRAM_STEP_SIZE)
static int
hifn_sramsize(struct hifn_softc *sc)
{
u_int32_t a;
u_int8_t data[8];
u_int8_t dataexpect[sizeof(data)];
int32_t i;
for (i = 0; i < sizeof(data); i++)
data[i] = dataexpect[i] = i ^ 0x5a;
for (i = HIFN_SRAM_GRANULARITY - 1; i >= 0; i--) {
a = i * HIFN_SRAM_STEP_SIZE;
bcopy(&i, data, sizeof(i));
hifn_writeramaddr(sc, a, data);
}
for (i = 0; i < HIFN_SRAM_GRANULARITY; i++) {
a = i * HIFN_SRAM_STEP_SIZE;
bcopy(&i, dataexpect, sizeof(i));
if (hifn_readramaddr(sc, a, data) < 0)
return (0);
if (bcmp(data, dataexpect, sizeof(data)) != 0)
return (0);
sc->sc_ramsize = a + HIFN_SRAM_STEP_SIZE;
}
return (0);
}
/*
* XXX For dram boards, one should really try all of the
* HIFN_PUCNFG_DSZ_*'s. This just assumes that PUCNFG
* is already set up correctly.
*/
static int
hifn_dramsize(struct hifn_softc *sc)
{
u_int32_t cnfg;
if (sc->sc_flags & HIFN_IS_7956) {
/*
* 7955/7956 have a fixed internal ram of only 32K.
*/
sc->sc_ramsize = 32768;
} else {
cnfg = READ_REG_0(sc, HIFN_0_PUCNFG) &
HIFN_PUCNFG_DRAMMASK;
sc->sc_ramsize = 1 << ((cnfg >> 13) + 18);
}
return (0);
}
static void
hifn_alloc_slot(struct hifn_softc *sc, int *cmdp, int *srcp, int *dstp, int *resp)
{
struct hifn_dma *dma = sc->sc_dma;
DPRINTF("%s()\n", __FUNCTION__);
if (dma->cmdi == HIFN_D_CMD_RSIZE) {
dma->cmdi = 0;
dma->cmdr[HIFN_D_CMD_RSIZE].l = htole32(HIFN_D_JUMP|HIFN_D_MASKDONEIRQ);
wmb();
dma->cmdr[HIFN_D_CMD_RSIZE].l |= htole32(HIFN_D_VALID);
HIFN_CMDR_SYNC(sc, HIFN_D_CMD_RSIZE,
BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
}
*cmdp = dma->cmdi++;
dma->cmdk = dma->cmdi;
if (dma->srci == HIFN_D_SRC_RSIZE) {
dma->srci = 0;
dma->srcr[HIFN_D_SRC_RSIZE].l = htole32(HIFN_D_JUMP|HIFN_D_MASKDONEIRQ);
wmb();
dma->srcr[HIFN_D_SRC_RSIZE].l |= htole32(HIFN_D_VALID);
HIFN_SRCR_SYNC(sc, HIFN_D_SRC_RSIZE,
BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
}
*srcp = dma->srci++;
dma->srck = dma->srci;
if (dma->dsti == HIFN_D_DST_RSIZE) {
dma->dsti = 0;
dma->dstr[HIFN_D_DST_RSIZE].l = htole32(HIFN_D_JUMP|HIFN_D_MASKDONEIRQ);
wmb();
dma->dstr[HIFN_D_DST_RSIZE].l |= htole32(HIFN_D_VALID);
HIFN_DSTR_SYNC(sc, HIFN_D_DST_RSIZE,
BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
}
*dstp = dma->dsti++;
dma->dstk = dma->dsti;
if (dma->resi == HIFN_D_RES_RSIZE) {
dma->resi = 0;
dma->resr[HIFN_D_RES_RSIZE].l = htole32(HIFN_D_JUMP|HIFN_D_MASKDONEIRQ);
wmb();
dma->resr[HIFN_D_RES_RSIZE].l |= htole32(HIFN_D_VALID);
HIFN_RESR_SYNC(sc, HIFN_D_RES_RSIZE,
BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
}
*resp = dma->resi++;
dma->resk = dma->resi;
}
static int
hifn_writeramaddr(struct hifn_softc *sc, int addr, u_int8_t *data)
{
struct hifn_dma *dma = sc->sc_dma;
hifn_base_command_t wc;
const u_int32_t masks = HIFN_D_VALID | HIFN_D_LAST | HIFN_D_MASKDONEIRQ;
int r, cmdi, resi, srci, dsti;
DPRINTF("%s()\n", __FUNCTION__);
wc.masks = htole16(3 << 13);
wc.session_num = htole16(addr >> 14);
wc.total_source_count = htole16(8);
wc.total_dest_count = htole16(addr & 0x3fff);
hifn_alloc_slot(sc, &cmdi, &srci, &dsti, &resi);
WRITE_REG_1(sc, HIFN_1_DMA_CSR,
HIFN_DMACSR_C_CTRL_ENA | HIFN_DMACSR_S_CTRL_ENA |
HIFN_DMACSR_D_CTRL_ENA | HIFN_DMACSR_R_CTRL_ENA);
/* build write command */
bzero(dma->command_bufs[cmdi], HIFN_MAX_COMMAND);
*(hifn_base_command_t *)dma->command_bufs[cmdi] = wc;
bcopy(data, &dma->test_src, sizeof(dma->test_src));
dma->srcr[srci].p = htole32(sc->sc_dma_physaddr
+ offsetof(struct hifn_dma, test_src));
dma->dstr[dsti].p = htole32(sc->sc_dma_physaddr
+ offsetof(struct hifn_dma, test_dst));
dma->cmdr[cmdi].l = htole32(16 | masks);
dma->srcr[srci].l = htole32(8 | masks);
dma->dstr[dsti].l = htole32(4 | masks);
dma->resr[resi].l = htole32(4 | masks);
for (r = 10000; r >= 0; r--) {
DELAY(10);
if ((dma->resr[resi].l & htole32(HIFN_D_VALID)) == 0)
break;
}
if (r == 0) {
device_printf(sc->sc_dev, "writeramaddr -- "
"result[%d](addr %d) still valid\n", resi, addr);
r = -1;
return (-1);
} else
r = 0;
WRITE_REG_1(sc, HIFN_1_DMA_CSR,
HIFN_DMACSR_C_CTRL_DIS | HIFN_DMACSR_S_CTRL_DIS |
HIFN_DMACSR_D_CTRL_DIS | HIFN_DMACSR_R_CTRL_DIS);
return (r);
}
static int
hifn_readramaddr(struct hifn_softc *sc, int addr, u_int8_t *data)
{
struct hifn_dma *dma = sc->sc_dma;
hifn_base_command_t rc;
const u_int32_t masks = HIFN_D_VALID | HIFN_D_LAST | HIFN_D_MASKDONEIRQ;
int r, cmdi, srci, dsti, resi;
DPRINTF("%s()\n", __FUNCTION__);
rc.masks = htole16(2 << 13);
rc.session_num = htole16(addr >> 14);
rc.total_source_count = htole16(addr & 0x3fff);
rc.total_dest_count = htole16(8);
hifn_alloc_slot(sc, &cmdi, &srci, &dsti, &resi);
WRITE_REG_1(sc, HIFN_1_DMA_CSR,
HIFN_DMACSR_C_CTRL_ENA | HIFN_DMACSR_S_CTRL_ENA |
HIFN_DMACSR_D_CTRL_ENA | HIFN_DMACSR_R_CTRL_ENA);
bzero(dma->command_bufs[cmdi], HIFN_MAX_COMMAND);
*(hifn_base_command_t *)dma->command_bufs[cmdi] = rc;
dma->srcr[srci].p = htole32(sc->sc_dma_physaddr +
offsetof(struct hifn_dma, test_src));
dma->test_src = 0;
dma->dstr[dsti].p = htole32(sc->sc_dma_physaddr +
offsetof(struct hifn_dma, test_dst));
dma->test_dst = 0;
dma->cmdr[cmdi].l = htole32(8 | masks);
dma->srcr[srci].l = htole32(8 | masks);
dma->dstr[dsti].l = htole32(8 | masks);
dma->resr[resi].l = htole32(HIFN_MAX_RESULT | masks);
for (r = 10000; r >= 0; r--) {
DELAY(10);
if ((dma->resr[resi].l & htole32(HIFN_D_VALID)) == 0)
break;
}
if (r == 0) {
device_printf(sc->sc_dev, "readramaddr -- "
"result[%d](addr %d) still valid\n", resi, addr);
r = -1;
} else {
r = 0;
bcopy(&dma->test_dst, data, sizeof(dma->test_dst));
}
WRITE_REG_1(sc, HIFN_1_DMA_CSR,
HIFN_DMACSR_C_CTRL_DIS | HIFN_DMACSR_S_CTRL_DIS |
HIFN_DMACSR_D_CTRL_DIS | HIFN_DMACSR_R_CTRL_DIS);
return (r);
}
/*
* Initialize the descriptor rings.
*/
static void
hifn_init_dma(struct hifn_softc *sc)
{
struct hifn_dma *dma = sc->sc_dma;
int i;
DPRINTF("%s()\n", __FUNCTION__);
hifn_set_retry(sc);
/* initialize static pointer values */
for (i = 0; i < HIFN_D_CMD_RSIZE; i++)
dma->cmdr[i].p = htole32(sc->sc_dma_physaddr +
offsetof(struct hifn_dma, command_bufs[i][0]));
for (i = 0; i < HIFN_D_RES_RSIZE; i++)
dma->resr[i].p = htole32(sc->sc_dma_physaddr +
offsetof(struct hifn_dma, result_bufs[i][0]));
dma->cmdr[HIFN_D_CMD_RSIZE].p =
htole32(sc->sc_dma_physaddr + offsetof(struct hifn_dma, cmdr[0]));
dma->srcr[HIFN_D_SRC_RSIZE].p =
htole32(sc->sc_dma_physaddr + offsetof(struct hifn_dma, srcr[0]));
dma->dstr[HIFN_D_DST_RSIZE].p =
htole32(sc->sc_dma_physaddr + offsetof(struct hifn_dma, dstr[0]));
dma->resr[HIFN_D_RES_RSIZE].p =
htole32(sc->sc_dma_physaddr + 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;
}
/*
* Writes out the raw command buffer space. Returns the
* command buffer size.
*/
static u_int
hifn_write_command(struct hifn_command *cmd, u_int8_t *buf)
{
struct hifn_softc *sc = NULL;
u_int8_t *buf_pos;
hifn_base_command_t *base_cmd;
hifn_mac_command_t *mac_cmd;
hifn_crypt_command_t *cry_cmd;
int using_mac, using_crypt, len, ivlen;
u_int32_t dlen, slen;
DPRINTF("%s()\n", __FUNCTION__);
buf_pos = buf;
using_mac = cmd->base_masks & HIFN_BASE_CMD_MAC;
using_crypt = cmd->base_masks & HIFN_BASE_CMD_CRYPT;
base_cmd = (hifn_base_command_t *)buf_pos;
base_cmd->masks = htole16(cmd->base_masks);
slen = cmd->src_mapsize;
if (cmd->sloplen)
dlen = cmd->dst_mapsize - cmd->sloplen + sizeof(u_int32_t);
else
dlen = cmd->dst_mapsize;
base_cmd->total_source_count = htole16(slen & HIFN_BASE_CMD_LENMASK_LO);
base_cmd->total_dest_count = htole16(dlen & HIFN_BASE_CMD_LENMASK_LO);
dlen >>= 16;
slen >>= 16;
base_cmd->session_num = htole16(
((slen << HIFN_BASE_CMD_SRCLEN_S) & HIFN_BASE_CMD_SRCLEN_M) |
((dlen << HIFN_BASE_CMD_DSTLEN_S) & HIFN_BASE_CMD_DSTLEN_M));
buf_pos += sizeof(hifn_base_command_t);
if (using_mac) {
mac_cmd = (hifn_mac_command_t *)buf_pos;
dlen = cmd->maccrd->crd_len;
mac_cmd->source_count = htole16(dlen & 0xffff);
dlen >>= 16;
mac_cmd->masks = htole16(cmd->mac_masks |
((dlen << HIFN_MAC_CMD_SRCLEN_S) & HIFN_MAC_CMD_SRCLEN_M));
mac_cmd->header_skip = htole16(cmd->maccrd->crd_skip);
mac_cmd->reserved = 0;
buf_pos += sizeof(hifn_mac_command_t);
}
if (using_crypt) {
cry_cmd = (hifn_crypt_command_t *)buf_pos;
dlen = cmd->enccrd->crd_len;
cry_cmd->source_count = htole16(dlen & 0xffff);
dlen >>= 16;
cry_cmd->masks = htole16(cmd->cry_masks |
((dlen << HIFN_CRYPT_CMD_SRCLEN_S) & HIFN_CRYPT_CMD_SRCLEN_M));
cry_cmd->header_skip = htole16(cmd->enccrd->crd_skip);
cry_cmd->reserved = 0;
buf_pos += sizeof(hifn_crypt_command_t);
}
if (using_mac && cmd->mac_masks & HIFN_MAC_CMD_NEW_KEY) {
bcopy(cmd->mac, buf_pos, HIFN_MAC_KEY_LENGTH);
buf_pos += HIFN_MAC_KEY_LENGTH;
}
if (using_crypt && cmd->cry_masks & HIFN_CRYPT_CMD_NEW_KEY) {
switch (cmd->cry_masks & HIFN_CRYPT_CMD_ALG_MASK) {
case HIFN_CRYPT_CMD_ALG_3DES:
bcopy(cmd->ck, buf_pos, HIFN_3DES_KEY_LENGTH);
buf_pos += HIFN_3DES_KEY_LENGTH;
break;
case HIFN_CRYPT_CMD_ALG_DES:
bcopy(cmd->ck, buf_pos, HIFN_DES_KEY_LENGTH);
buf_pos += HIFN_DES_KEY_LENGTH;
break;
case HIFN_CRYPT_CMD_ALG_RC4:
len = 256;
do {
int clen;
clen = MIN(cmd->cklen, len);
bcopy(cmd->ck, buf_pos, clen);
len -= clen;
buf_pos += clen;
} while (len > 0);
bzero(buf_pos, 4);
buf_pos += 4;
break;
case HIFN_CRYPT_CMD_ALG_AES:
/*
* AES keys are variable 128, 192 and
* 256 bits (16, 24 and 32 bytes).
*/
bcopy(cmd->ck, buf_pos, cmd->cklen);
buf_pos += cmd->cklen;
break;
}
}
if (using_crypt && cmd->cry_masks & HIFN_CRYPT_CMD_NEW_IV) {
switch (cmd->cry_masks & HIFN_CRYPT_CMD_ALG_MASK) {
case HIFN_CRYPT_CMD_ALG_AES:
ivlen = HIFN_AES_IV_LENGTH;
break;
default:
ivlen = HIFN_IV_LENGTH;
break;
}
bcopy(cmd->iv, buf_pos, ivlen);
buf_pos += ivlen;
}
if ((cmd->base_masks & (HIFN_BASE_CMD_MAC|HIFN_BASE_CMD_CRYPT)) == 0) {
bzero(buf_pos, 8);
buf_pos += 8;
}
return (buf_pos - buf);
}
static int
hifn_dmamap_aligned(struct hifn_operand *op)
{
struct hifn_softc *sc = NULL;
int i;
DPRINTF("%s()\n", __FUNCTION__);
for (i = 0; i < op->nsegs; i++) {
if (op->segs[i].ds_addr & 3)
return (0);
if ((i != (op->nsegs - 1)) && (op->segs[i].ds_len & 3))
return (0);
}
return (1);
}
static __inline int
hifn_dmamap_dstwrap(struct hifn_softc *sc, int idx)
{
struct hifn_dma *dma = sc->sc_dma;
if (++idx == HIFN_D_DST_RSIZE) {
dma->dstr[idx].l = htole32(HIFN_D_VALID | HIFN_D_JUMP |
HIFN_D_MASKDONEIRQ);
HIFN_DSTR_SYNC(sc, idx,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
idx = 0;
}
return (idx);
}
static int
hifn_dmamap_load_dst(struct hifn_softc *sc, struct hifn_command *cmd)
{
struct hifn_dma *dma = sc->sc_dma;
struct hifn_operand *dst = &cmd->dst;
u_int32_t p, l;
int idx, used = 0, i;
DPRINTF("%s()\n", __FUNCTION__);
idx = dma->dsti;
for (i = 0; i < dst->nsegs - 1; i++) {
dma->dstr[idx].p = htole32(dst->segs[i].ds_addr);
dma->dstr[idx].l = htole32(HIFN_D_MASKDONEIRQ | dst->segs[i].ds_len);
wmb();
dma->dstr[idx].l |= htole32(HIFN_D_VALID);
HIFN_DSTR_SYNC(sc, idx,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
used++;
idx = hifn_dmamap_dstwrap(sc, idx);
}
if (cmd->sloplen == 0) {
p = dst->segs[i].ds_addr;
l = HIFN_D_MASKDONEIRQ | HIFN_D_LAST |
dst->segs[i].ds_len;
} else {
p = sc->sc_dma_physaddr +
offsetof(struct hifn_dma, slop[cmd->slopidx]);
l = HIFN_D_MASKDONEIRQ | HIFN_D_LAST |
sizeof(u_int32_t);
if ((dst->segs[i].ds_len - cmd->sloplen) != 0) {
dma->dstr[idx].p = htole32(dst->segs[i].ds_addr);
dma->dstr[idx].l = htole32(HIFN_D_MASKDONEIRQ |
(dst->segs[i].ds_len - cmd->sloplen));
wmb();
dma->dstr[idx].l |= htole32(HIFN_D_VALID);
HIFN_DSTR_SYNC(sc, idx,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
used++;
idx = hifn_dmamap_dstwrap(sc, idx);
}
}
dma->dstr[idx].p = htole32(p);
dma->dstr[idx].l = htole32(l);
wmb();
dma->dstr[idx].l |= htole32(HIFN_D_VALID);
HIFN_DSTR_SYNC(sc, idx, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
used++;
idx = hifn_dmamap_dstwrap(sc, idx);
dma->dsti = idx;
dma->dstu += used;
return (idx);
}
static __inline int
hifn_dmamap_srcwrap(struct hifn_softc *sc, int idx)
{
struct hifn_dma *dma = sc->sc_dma;
if (++idx == HIFN_D_SRC_RSIZE) {
dma->srcr[idx].l = htole32(HIFN_D_VALID |
HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
HIFN_SRCR_SYNC(sc, HIFN_D_SRC_RSIZE,
BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
idx = 0;
}
return (idx);
}
static int
hifn_dmamap_load_src(struct hifn_softc *sc, struct hifn_command *cmd)
{
struct hifn_dma *dma = sc->sc_dma;
struct hifn_operand *src = &cmd->src;
int idx, i;
u_int32_t last = 0;
DPRINTF("%s()\n", __FUNCTION__);
idx = dma->srci;
for (i = 0; i < src->nsegs; i++) {
if (i == src->nsegs - 1)
last = HIFN_D_LAST;
dma->srcr[idx].p = htole32(src->segs[i].ds_addr);
dma->srcr[idx].l = htole32(src->segs[i].ds_len |
HIFN_D_MASKDONEIRQ | last);
wmb();
dma->srcr[idx].l |= htole32(HIFN_D_VALID);
HIFN_SRCR_SYNC(sc, idx,
BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
idx = hifn_dmamap_srcwrap(sc, idx);
}
dma->srci = idx;
dma->srcu += src->nsegs;
return (idx);
}
static int
hifn_crypto(
struct hifn_softc *sc,
struct hifn_command *cmd,
struct cryptop *crp,
int hint)
{
struct hifn_dma *dma = sc->sc_dma;
u_int32_t cmdlen, csr;
int cmdi, resi, err = 0;
unsigned long l_flags;
DPRINTF("%s()\n", __FUNCTION__);
/*
* need 1 cmd, and 1 res
*
* NB: check this first since it's easy.
*/
HIFN_LOCK(sc);
if ((dma->cmdu + 1) > HIFN_D_CMD_RSIZE ||
(dma->resu + 1) > HIFN_D_RES_RSIZE) {
#ifdef HIFN_DEBUG
if (hifn_debug) {
device_printf(sc->sc_dev,
"cmd/result exhaustion, cmdu %u resu %u\n",
dma->cmdu, dma->resu);
}
#endif
hifnstats.hst_nomem_cr++;
sc->sc_needwakeup |= CRYPTO_SYMQ;
HIFN_UNLOCK(sc);
return (ERESTART);
}
if (crp->crp_flags & CRYPTO_F_SKBUF) {
if (pci_map_skb(sc, &cmd->src, cmd->src_skb)) {
hifnstats.hst_nomem_load++;
err = ENOMEM;
goto err_srcmap1;
}
} else if (crp->crp_flags & CRYPTO_F_IOV) {
if (pci_map_uio(sc, &cmd->src, cmd->src_io)) {
hifnstats.hst_nomem_load++;
err = ENOMEM;
goto err_srcmap1;
}
} else {
if (pci_map_buf(sc, &cmd->src, cmd->src_buf, crp->crp_ilen)) {
hifnstats.hst_nomem_load++;
err = ENOMEM;
goto err_srcmap1;
}
}
if (hifn_dmamap_aligned(&cmd->src)) {
cmd->sloplen = cmd->src_mapsize & 3;
cmd->dst = cmd->src;
} else {
if (crp->crp_flags & CRYPTO_F_IOV) {
DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
err = EINVAL;
goto err_srcmap;
} else if (crp->crp_flags & CRYPTO_F_SKBUF) {
#ifdef NOTYET
int totlen, len;
struct mbuf *m, *m0, *mlast;
KASSERT(cmd->dst_m == cmd->src_m,
("hifn_crypto: dst_m initialized improperly"));
hifnstats.hst_unaligned++;
/*
* Source is not aligned on a longword boundary.
* Copy the data to insure alignment. If we fail
* to allocate mbufs or clusters while doing this
* we return ERESTART so the operation is requeued
* at the crypto later, but only if there are
* ops already posted to the hardware; otherwise we
* have no guarantee that we'll be re-entered.
*/
totlen = cmd->src_mapsize;
if (cmd->src_m->m_flags & M_PKTHDR) {
len = MHLEN;
MGETHDR(m0, M_DONTWAIT, MT_DATA);
if (m0 && !m_dup_pkthdr(m0, cmd->src_m, M_DONTWAIT)) {
m_free(m0);
m0 = NULL;
}
} else {
len = MLEN;
MGET(m0, M_DONTWAIT, MT_DATA);
}
if (m0 == NULL) {
hifnstats.hst_nomem_mbuf++;
err = dma->cmdu ? ERESTART : ENOMEM;
goto err_srcmap;
}
if (totlen >= MINCLSIZE) {
MCLGET(m0, M_DONTWAIT);
if ((m0->m_flags & M_EXT) == 0) {
hifnstats.hst_nomem_mcl++;
err = dma->cmdu ? ERESTART : ENOMEM;
m_freem(m0);
goto err_srcmap;
}
len = MCLBYTES;
}
totlen -= len;
m0->m_pkthdr.len = m0->m_len = len;
mlast = m0;
while (totlen > 0) {
MGET(m, M_DONTWAIT, MT_DATA);
if (m == NULL) {
hifnstats.hst_nomem_mbuf++;
err = dma->cmdu ? ERESTART : ENOMEM;
m_freem(m0);
goto err_srcmap;
}
len = MLEN;
if (totlen >= MINCLSIZE) {
MCLGET(m, M_DONTWAIT);
if ((m->m_flags & M_EXT) == 0) {
hifnstats.hst_nomem_mcl++;
err = dma->cmdu ? ERESTART : ENOMEM;
mlast->m_next = m;
m_freem(m0);
goto err_srcmap;
}
len = MCLBYTES;
}
m->m_len = len;
m0->m_pkthdr.len += len;
totlen -= len;
mlast->m_next = m;
mlast = m;
}
cmd->dst_m = m0;
#else
device_printf(sc->sc_dev,
"%s,%d: CRYPTO_F_SKBUF unaligned not implemented\n",
__FILE__, __LINE__);
err = EINVAL;
goto err_srcmap;
#endif
} else {
device_printf(sc->sc_dev,
"%s,%d: unaligned contig buffers not implemented\n",
__FILE__, __LINE__);
err = EINVAL;
goto err_srcmap;
}
}
if (cmd->dst_map == NULL) {
if (crp->crp_flags & CRYPTO_F_SKBUF) {
if (pci_map_skb(sc, &cmd->dst, cmd->dst_skb)) {
hifnstats.hst_nomem_map++;
err = ENOMEM;
goto err_dstmap1;
}
} else if (crp->crp_flags & CRYPTO_F_IOV) {
if (pci_map_uio(sc, &cmd->dst, cmd->dst_io)) {
hifnstats.hst_nomem_load++;
err = ENOMEM;
goto err_dstmap1;
}
} else {
if (pci_map_buf(sc, &cmd->dst, cmd->dst_buf, crp->crp_ilen)) {
hifnstats.hst_nomem_load++;
err = ENOMEM;
goto err_dstmap1;
}
}
}
#ifdef HIFN_DEBUG
if (hifn_debug) {
device_printf(sc->sc_dev,
"Entering cmd: stat %8x ien %8x u %d/%d/%d/%d n %d/%d\n",
READ_REG_1(sc, HIFN_1_DMA_CSR),
READ_REG_1(sc, HIFN_1_DMA_IER),
dma->cmdu, dma->srcu, dma->dstu, dma->resu,
cmd->src_nsegs, cmd->dst_nsegs);
}
#endif
#if 0
if (cmd->src_map == cmd->dst_map) {
bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
BUS_DMASYNC_PREWRITE|BUS_DMASYNC_PREREAD);
} else {
bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(sc->sc_dmat, cmd->dst_map,
BUS_DMASYNC_PREREAD);
}
#endif
/*
* need N src, and N dst
*/
if ((dma->srcu + cmd->src_nsegs) > HIFN_D_SRC_RSIZE ||
(dma->dstu + cmd->dst_nsegs + 1) > HIFN_D_DST_RSIZE) {
#ifdef HIFN_DEBUG
if (hifn_debug) {
device_printf(sc->sc_dev,
"src/dst exhaustion, srcu %u+%u dstu %u+%u\n",
dma->srcu, cmd->src_nsegs,
dma->dstu, cmd->dst_nsegs);
}
#endif
hifnstats.hst_nomem_sd++;
err = ERESTART;
goto err_dstmap;
}
if (dma->cmdi == HIFN_D_CMD_RSIZE) {
dma->cmdi = 0;
dma->cmdr[HIFN_D_CMD_RSIZE].l = htole32(HIFN_D_JUMP|HIFN_D_MASKDONEIRQ);
wmb();
dma->cmdr[HIFN_D_CMD_RSIZE].l |= htole32(HIFN_D_VALID);
HIFN_CMDR_SYNC(sc, HIFN_D_CMD_RSIZE,
BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
}
cmdi = dma->cmdi++;
cmdlen = hifn_write_command(cmd, dma->command_bufs[cmdi]);
HIFN_CMD_SYNC(sc, cmdi, BUS_DMASYNC_PREWRITE);
/* .p for command/result already set */
dma->cmdr[cmdi].l = htole32(cmdlen | HIFN_D_LAST |
HIFN_D_MASKDONEIRQ);
wmb();
dma->cmdr[cmdi].l |= htole32(HIFN_D_VALID);
HIFN_CMDR_SYNC(sc, cmdi,
BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
dma->cmdu++;
/*
* We don't worry about missing an interrupt (which a "command wait"
* interrupt salvages us from), unless there is more than one command
* in the queue.
*/
if (dma->cmdu > 1) {
sc->sc_dmaier |= HIFN_DMAIER_C_WAIT;
WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
}
hifnstats.hst_ipackets++;
hifnstats.hst_ibytes += cmd->src_mapsize;
hifn_dmamap_load_src(sc, cmd);
/*
* Unlike other descriptors, we don't mask done interrupt from
* result descriptor.
*/
#ifdef HIFN_DEBUG
if (hifn_debug)
device_printf(sc->sc_dev, "load res\n");
#endif
if (dma->resi == HIFN_D_RES_RSIZE) {
dma->resi = 0;
dma->resr[HIFN_D_RES_RSIZE].l = htole32(HIFN_D_JUMP|HIFN_D_MASKDONEIRQ);
wmb();
dma->resr[HIFN_D_RES_RSIZE].l |= htole32(HIFN_D_VALID);
HIFN_RESR_SYNC(sc, HIFN_D_RES_RSIZE,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
}
resi = dma->resi++;
KASSERT(dma->hifn_commands[resi] == NULL,
("hifn_crypto: command slot %u busy", resi));
dma->hifn_commands[resi] = cmd;
HIFN_RES_SYNC(sc, resi, BUS_DMASYNC_PREREAD);
if ((hint & CRYPTO_HINT_MORE) && sc->sc_curbatch < hifn_maxbatch) {
dma->resr[resi].l = htole32(HIFN_MAX_RESULT |
HIFN_D_LAST | HIFN_D_MASKDONEIRQ);
wmb();
dma->resr[resi].l |= htole32(HIFN_D_VALID);
sc->sc_curbatch++;
if (sc->sc_curbatch > hifnstats.hst_maxbatch)
hifnstats.hst_maxbatch = sc->sc_curbatch;
hifnstats.hst_totbatch++;
} else {
dma->resr[resi].l = htole32(HIFN_MAX_RESULT | HIFN_D_LAST);
wmb();
dma->resr[resi].l |= htole32(HIFN_D_VALID);
sc->sc_curbatch = 0;
}
HIFN_RESR_SYNC(sc, resi,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
dma->resu++;
if (cmd->sloplen)
cmd->slopidx = resi;
hifn_dmamap_load_dst(sc, cmd);
csr = 0;
if (sc->sc_c_busy == 0) {
csr |= HIFN_DMACSR_C_CTRL_ENA;
sc->sc_c_busy = 1;
}
if (sc->sc_s_busy == 0) {
csr |= HIFN_DMACSR_S_CTRL_ENA;
sc->sc_s_busy = 1;
}
if (sc->sc_r_busy == 0) {
csr |= HIFN_DMACSR_R_CTRL_ENA;
sc->sc_r_busy = 1;
}
if (sc->sc_d_busy == 0) {
csr |= HIFN_DMACSR_D_CTRL_ENA;
sc->sc_d_busy = 1;
}
if (csr)
WRITE_REG_1(sc, HIFN_1_DMA_CSR, csr);
#ifdef HIFN_DEBUG
if (hifn_debug) {
device_printf(sc->sc_dev, "command: stat %8x ier %8x\n",
READ_REG_1(sc, HIFN_1_DMA_CSR),
READ_REG_1(sc, HIFN_1_DMA_IER));
}
#endif
sc->sc_active = 5;
HIFN_UNLOCK(sc);
KASSERT(err == 0, ("hifn_crypto: success with error %u", err));
return (err); /* success */
err_dstmap:
if (cmd->src_map != cmd->dst_map)
pci_unmap_buf(sc, &cmd->dst);
err_dstmap1:
err_srcmap:
if (crp->crp_flags & CRYPTO_F_SKBUF) {
if (cmd->src_skb != cmd->dst_skb)
#ifdef NOTYET
m_freem(cmd->dst_m);
#else
device_printf(sc->sc_dev,
"%s,%d: CRYPTO_F_SKBUF src != dst not implemented\n",
__FILE__, __LINE__);
#endif
}
pci_unmap_buf(sc, &cmd->src);
err_srcmap1:
HIFN_UNLOCK(sc);
return (err);
}
static void
hifn_tick(unsigned long arg)
{
struct hifn_softc *sc;
unsigned long l_flags;
if (arg >= HIFN_MAX_CHIPS)
return;
sc = hifn_chip_idx[arg];
if (!sc)
return;
HIFN_LOCK(sc);
if (sc->sc_active == 0) {
struct hifn_dma *dma = sc->sc_dma;
u_int32_t r = 0;
if (dma->cmdu == 0 && sc->sc_c_busy) {
sc->sc_c_busy = 0;
r |= HIFN_DMACSR_C_CTRL_DIS;
}
if (dma->srcu == 0 && sc->sc_s_busy) {
sc->sc_s_busy = 0;
r |= HIFN_DMACSR_S_CTRL_DIS;
}
if (dma->dstu == 0 && sc->sc_d_busy) {
sc->sc_d_busy = 0;
r |= HIFN_DMACSR_D_CTRL_DIS;
}
if (dma->resu == 0 && sc->sc_r_busy) {
sc->sc_r_busy = 0;
r |= HIFN_DMACSR_R_CTRL_DIS;
}
if (r)
WRITE_REG_1(sc, HIFN_1_DMA_CSR, r);
} else
sc->sc_active--;
HIFN_UNLOCK(sc);
mod_timer(&sc->sc_tickto, jiffies + HZ);
}
static irqreturn_t
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19)
hifn_intr(int irq, void *arg)
#else
hifn_intr(int irq, void *arg, struct pt_regs *regs)
#endif
{
struct hifn_softc *sc = arg;
struct hifn_dma *dma;
u_int32_t dmacsr, restart;
int i, u;
unsigned long l_flags;
dmacsr = READ_REG_1(sc, HIFN_1_DMA_CSR);
/* Nothing in the DMA unit interrupted */
if ((dmacsr & sc->sc_dmaier) == 0)
return IRQ_NONE;
HIFN_LOCK(sc);
dma = sc->sc_dma;
#ifdef HIFN_DEBUG
if (hifn_debug) {
device_printf(sc->sc_dev,
"irq: stat %08x ien %08x damier %08x i %d/%d/%d/%d k %d/%d/%d/%d u %d/%d/%d/%d\n",
dmacsr, READ_REG_1(sc, HIFN_1_DMA_IER), sc->sc_dmaier,
dma->cmdi, dma->srci, dma->dsti, dma->resi,
dma->cmdk, dma->srck, dma->dstk, dma->resk,
dma->cmdu, dma->srcu, dma->dstu, dma->resu);
}
#endif
WRITE_REG_1(sc, HIFN_1_DMA_CSR, dmacsr & sc->sc_dmaier);
if ((sc->sc_flags & HIFN_HAS_PUBLIC) &&
(dmacsr & HIFN_DMACSR_PUBDONE))
WRITE_REG_1(sc, HIFN_1_PUB_STATUS,
READ_REG_1(sc, HIFN_1_PUB_STATUS) | HIFN_PUBSTS_DONE);
restart = dmacsr & (HIFN_DMACSR_D_OVER | HIFN_DMACSR_R_OVER);
if (restart)
device_printf(sc->sc_dev, "overrun %x\n", dmacsr);
if (sc->sc_flags & HIFN_IS_7811) {
if (dmacsr & HIFN_DMACSR_ILLR)
device_printf(sc->sc_dev, "illegal read\n");
if (dmacsr & HIFN_DMACSR_ILLW)
device_printf(sc->sc_dev, "illegal write\n");
}
restart = dmacsr & (HIFN_DMACSR_C_ABORT | HIFN_DMACSR_S_ABORT |
HIFN_DMACSR_D_ABORT | HIFN_DMACSR_R_ABORT);
if (restart) {
device_printf(sc->sc_dev, "abort, resetting.\n");
hifnstats.hst_abort++;
hifn_abort(sc);
HIFN_UNLOCK(sc);
return IRQ_HANDLED;
}
if ((dmacsr & HIFN_DMACSR_C_WAIT) && (dma->cmdu == 0)) {
/*
* If no slots to process and we receive a "waiting on
* command" interrupt, we disable the "waiting on command"
* (by clearing it).
*/
sc->sc_dmaier &= ~HIFN_DMAIER_C_WAIT;
WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
}
/* clear the rings */
i = dma->resk; u = dma->resu;
while (u != 0) {
HIFN_RESR_SYNC(sc, i,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
if (dma->resr[i].l & htole32(HIFN_D_VALID)) {
HIFN_RESR_SYNC(sc, i,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
break;
}
if (i != HIFN_D_RES_RSIZE) {
struct hifn_command *cmd;
u_int8_t *macbuf = NULL;
HIFN_RES_SYNC(sc, i, BUS_DMASYNC_POSTREAD);
cmd = dma->hifn_commands[i];
KASSERT(cmd != NULL,
("hifn_intr: null command slot %u", i));
dma->hifn_commands[i] = NULL;
if (cmd->base_masks & HIFN_BASE_CMD_MAC) {
macbuf = dma->result_bufs[i];
macbuf += 12;
}
hifn_callback(sc, cmd, macbuf);
hifnstats.hst_opackets++;
u--;
}
if (++i == (HIFN_D_RES_RSIZE + 1))
i = 0;
}
dma->resk = i; dma->resu = u;
i = dma->srck; u = dma->srcu;
while (u != 0) {
if (i == HIFN_D_SRC_RSIZE)
i = 0;
HIFN_SRCR_SYNC(sc, i,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
if (dma->srcr[i].l & htole32(HIFN_D_VALID)) {
HIFN_SRCR_SYNC(sc, i,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
break;
}
i++, u--;
}
dma->srck = i; dma->srcu = u;
i = dma->cmdk; u = dma->cmdu;
while (u != 0) {
HIFN_CMDR_SYNC(sc, i,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
if (dma->cmdr[i].l & htole32(HIFN_D_VALID)) {
HIFN_CMDR_SYNC(sc, i,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
break;
}
if (i != HIFN_D_CMD_RSIZE) {
u--;
HIFN_CMD_SYNC(sc, i, BUS_DMASYNC_POSTWRITE);
}
if (++i == (HIFN_D_CMD_RSIZE + 1))
i = 0;
}
dma->cmdk = i; dma->cmdu = u;
HIFN_UNLOCK(sc);
if (sc->sc_needwakeup) { /* XXX check high watermark */
int wakeup = sc->sc_needwakeup & (CRYPTO_SYMQ|CRYPTO_ASYMQ);
#ifdef HIFN_DEBUG
if (hifn_debug)
device_printf(sc->sc_dev,
"wakeup crypto (%x) u %d/%d/%d/%d\n",
sc->sc_needwakeup,
dma->cmdu, dma->srcu, dma->dstu, dma->resu);
#endif
sc->sc_needwakeup &= ~wakeup;
crypto_unblock(sc->sc_cid, wakeup);
}
return IRQ_HANDLED;
}
/*
* Allocate a new 'session' and return an encoded session id. 'sidp'
* contains our registration id, and should contain an encoded session
* id on successful allocation.
*/
static int
hifn_newsession(device_t dev, u_int32_t *sidp, struct cryptoini *cri)
{
struct hifn_softc *sc = device_get_softc(dev);
struct cryptoini *c;
int mac = 0, cry = 0, sesn;
struct hifn_session *ses = NULL;
unsigned long l_flags;
DPRINTF("%s()\n", __FUNCTION__);
KASSERT(sc != NULL, ("hifn_newsession: null softc"));
if (sidp == NULL || cri == NULL || sc == NULL) {
DPRINTF("%s,%d: %s - EINVAL\n", __FILE__, __LINE__, __FUNCTION__);
return (EINVAL);
}
HIFN_LOCK(sc);
if (sc->sc_sessions == NULL) {
ses = sc->sc_sessions = (struct hifn_session *)kmalloc(sizeof(*ses),
SLAB_ATOMIC);
if (ses == NULL) {
HIFN_UNLOCK(sc);
return (ENOMEM);
}
sesn = 0;
sc->sc_nsessions = 1;
} else {
for (sesn = 0; sesn < sc->sc_nsessions; sesn++) {
if (!sc->sc_sessions[sesn].hs_used) {
ses = &sc->sc_sessions[sesn];
break;
}
}
if (ses == NULL) {
sesn = sc->sc_nsessions;
ses = (struct hifn_session *)kmalloc((sesn + 1) * sizeof(*ses),
SLAB_ATOMIC);
if (ses == NULL) {
HIFN_UNLOCK(sc);
return (ENOMEM);
}
bcopy(sc->sc_sessions, ses, sesn * sizeof(*ses));
bzero(sc->sc_sessions, sesn * sizeof(*ses));
kfree(sc->sc_sessions);
sc->sc_sessions = ses;
ses = &sc->sc_sessions[sesn];
sc->sc_nsessions++;
}
}
HIFN_UNLOCK(sc);
bzero(ses, sizeof(*ses));
ses->hs_used = 1;
for (c = cri; c != NULL; c = c->cri_next) {
switch (c->cri_alg) {
case CRYPTO_MD5:
case CRYPTO_SHA1:
case CRYPTO_MD5_HMAC:
case CRYPTO_SHA1_HMAC:
if (mac) {
DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
return (EINVAL);
}
mac = 1;
ses->hs_mlen = c->cri_mlen;
if (ses->hs_mlen == 0) {
switch (c->cri_alg) {
case CRYPTO_MD5:
case CRYPTO_MD5_HMAC:
ses->hs_mlen = 16;
break;
case CRYPTO_SHA1:
case CRYPTO_SHA1_HMAC:
ses->hs_mlen = 20;
break;
}
}
break;
case CRYPTO_DES_CBC:
case CRYPTO_3DES_CBC:
case CRYPTO_AES_CBC:
/* XXX this may read fewer, does it matter? */
read_random(ses->hs_iv,
c->cri_alg == CRYPTO_AES_CBC ?
HIFN_AES_IV_LENGTH : HIFN_IV_LENGTH);
/*FALLTHROUGH*/
case CRYPTO_ARC4:
if (cry) {
DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
return (EINVAL);
}
cry = 1;
break;
default:
DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
return (EINVAL);
}
}
if (mac == 0 && cry == 0) {
DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
return (EINVAL);
}
*sidp = HIFN_SID(device_get_unit(sc->sc_dev), sesn);
return (0);
}
/*
* Deallocate a session.
* XXX this routine should run a zero'd mac/encrypt key into context ram.
* XXX to blow away any keys already stored there.
*/
static int
hifn_freesession(device_t dev, u_int64_t tid)
{
struct hifn_softc *sc = device_get_softc(dev);
int session, error;
u_int32_t sid = CRYPTO_SESID2LID(tid);
unsigned long l_flags;
DPRINTF("%s()\n", __FUNCTION__);
KASSERT(sc != NULL, ("hifn_freesession: null softc"));
if (sc == NULL) {
DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
return (EINVAL);
}
HIFN_LOCK(sc);
session = HIFN_SESSION(sid);
if (session < sc->sc_nsessions) {
bzero(&sc->sc_sessions[session], sizeof(struct hifn_session));
error = 0;
} else {
DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
error = EINVAL;
}
HIFN_UNLOCK(sc);
return (error);
}
static int
hifn_process(device_t dev, struct cryptop *crp, int hint)
{
struct hifn_softc *sc = device_get_softc(dev);
struct hifn_command *cmd = NULL;
int session, err, ivlen;
struct cryptodesc *crd1, *crd2, *maccrd, *enccrd;
DPRINTF("%s()\n", __FUNCTION__);
if (crp == NULL || crp->crp_callback == NULL) {
hifnstats.hst_invalid++;
DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
return (EINVAL);
}
session = HIFN_SESSION(crp->crp_sid);
if (sc == NULL || session >= sc->sc_nsessions) {
DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
err = EINVAL;
goto errout;
}
cmd = kmalloc(sizeof(struct hifn_command), SLAB_ATOMIC);
if (cmd == NULL) {
hifnstats.hst_nomem++;
err = ENOMEM;
goto errout;
}
memset(cmd, 0, sizeof(*cmd));
if (crp->crp_flags & CRYPTO_F_SKBUF) {
cmd->src_skb = (struct sk_buff *)crp->crp_buf;
cmd->dst_skb = (struct sk_buff *)crp->crp_buf;
} else if (crp->crp_flags & CRYPTO_F_IOV) {
cmd->src_io = (struct uio *)crp->crp_buf;
cmd->dst_io = (struct uio *)crp->crp_buf;
} else {
cmd->src_buf = crp->crp_buf;
cmd->dst_buf = crp->crp_buf;
}
crd1 = crp->crp_desc;
if (crd1 == NULL) {
DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
err = EINVAL;
goto errout;
}
crd2 = crd1->crd_next;
if (crd2 == NULL) {
if (crd1->crd_alg == CRYPTO_MD5_HMAC ||
crd1->crd_alg == CRYPTO_SHA1_HMAC ||
crd1->crd_alg == CRYPTO_SHA1 ||
crd1->crd_alg == CRYPTO_MD5) {
maccrd = crd1;
enccrd = NULL;
} else if (crd1->crd_alg == CRYPTO_DES_CBC ||
crd1->crd_alg == CRYPTO_3DES_CBC ||
crd1->crd_alg == CRYPTO_AES_CBC ||
crd1->crd_alg == CRYPTO_ARC4) {
if ((crd1->crd_flags & CRD_F_ENCRYPT) == 0)
cmd->base_masks |= HIFN_BASE_CMD_DECODE;
maccrd = NULL;
enccrd = crd1;
} else {
DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
err = EINVAL;
goto errout;
}
} else {
if ((crd1->crd_alg == CRYPTO_MD5_HMAC ||
crd1->crd_alg == CRYPTO_SHA1_HMAC ||
crd1->crd_alg == CRYPTO_MD5 ||
crd1->crd_alg == CRYPTO_SHA1) &&
(crd2->crd_alg == CRYPTO_DES_CBC ||
crd2->crd_alg == CRYPTO_3DES_CBC ||
crd2->crd_alg == CRYPTO_AES_CBC ||
crd2->crd_alg == CRYPTO_ARC4) &&
((crd2->crd_flags & CRD_F_ENCRYPT) == 0)) {
cmd->base_masks = HIFN_BASE_CMD_DECODE;
maccrd = crd1;
enccrd = crd2;
} else if ((crd1->crd_alg == CRYPTO_DES_CBC ||
crd1->crd_alg == CRYPTO_ARC4 ||
crd1->crd_alg == CRYPTO_3DES_CBC ||
crd1->crd_alg == CRYPTO_AES_CBC) &&
(crd2->crd_alg == CRYPTO_MD5_HMAC ||
crd2->crd_alg == CRYPTO_SHA1_HMAC ||
crd2->crd_alg == CRYPTO_MD5 ||
crd2->crd_alg == CRYPTO_SHA1) &&
(crd1->crd_flags & CRD_F_ENCRYPT)) {
enccrd = crd1;
maccrd = crd2;
} else {
/*
* We cannot order the 7751 as requested
*/
DPRINTF("%s,%d: %s %d,%d,%d - EINVAL\n",__FILE__,__LINE__,__FUNCTION__, crd1->crd_alg, crd2->crd_alg, crd1->crd_flags & CRD_F_ENCRYPT);
err = EINVAL;
goto errout;
}
}
if (enccrd) {
cmd->enccrd = enccrd;
cmd->base_masks |= HIFN_BASE_CMD_CRYPT;
switch (enccrd->crd_alg) {
case CRYPTO_ARC4:
cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_RC4;
break;
case CRYPTO_DES_CBC:
cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_DES |
HIFN_CRYPT_CMD_MODE_CBC |
HIFN_CRYPT_CMD_NEW_IV;
break;
case CRYPTO_3DES_CBC:
cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_3DES |
HIFN_CRYPT_CMD_MODE_CBC |
HIFN_CRYPT_CMD_NEW_IV;
break;
case CRYPTO_AES_CBC:
cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_AES |
HIFN_CRYPT_CMD_MODE_CBC |
HIFN_CRYPT_CMD_NEW_IV;
break;
default:
DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
err = EINVAL;
goto errout;
}
if (enccrd->crd_alg != CRYPTO_ARC4) {
ivlen = ((enccrd->crd_alg == CRYPTO_AES_CBC) ?
HIFN_AES_IV_LENGTH : HIFN_IV_LENGTH);
if (enccrd->crd_flags & CRD_F_ENCRYPT) {
if (enccrd->crd_flags & CRD_F_IV_EXPLICIT)
bcopy(enccrd->crd_iv, cmd->iv, ivlen);
else
bcopy(sc->sc_sessions[session].hs_iv,
cmd->iv, ivlen);
if ((enccrd->crd_flags & CRD_F_IV_PRESENT)
== 0) {
crypto_copyback(crp->crp_flags,
crp->crp_buf, enccrd->crd_inject,
ivlen, cmd->iv);
}
} else {
if (enccrd->crd_flags & CRD_F_IV_EXPLICIT)
bcopy(enccrd->crd_iv, cmd->iv, ivlen);
else {
crypto_copydata(crp->crp_flags,
crp->crp_buf, enccrd->crd_inject,
ivlen, cmd->iv);
}
}
}
if (enccrd->crd_flags & CRD_F_KEY_EXPLICIT)
cmd->cry_masks |= HIFN_CRYPT_CMD_NEW_KEY;
cmd->ck = enccrd->crd_key;
cmd->cklen = enccrd->crd_klen >> 3;
cmd->cry_masks |= HIFN_CRYPT_CMD_NEW_KEY;
/*
* Need to specify the size for the AES key in the masks.
*/
if ((cmd->cry_masks & HIFN_CRYPT_CMD_ALG_MASK) ==
HIFN_CRYPT_CMD_ALG_AES) {
switch (cmd->cklen) {
case 16:
cmd->cry_masks |= HIFN_CRYPT_CMD_KSZ_128;
break;
case 24:
cmd->cry_masks |= HIFN_CRYPT_CMD_KSZ_192;
break;
case 32:
cmd->cry_masks |= HIFN_CRYPT_CMD_KSZ_256;
break;
default:
DPRINTF("%s,%d: %s - EINVAL\n",__FILE__,__LINE__,__FUNCTION__);
err = EINVAL;
goto errout;
}
}
}
if (maccrd) {
cmd->maccrd = maccrd;
cmd->base_masks |= HIFN_BASE_CMD_MAC;
switch (maccrd->crd_alg) {
case CRYPTO_MD5:
cmd->mac_masks |= HIFN_MAC_CMD_ALG_MD5 |
HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HASH |
HIFN_MAC_CMD_POS_IPSEC;
break;
case CRYPTO_MD5_HMAC:
cmd->mac_masks |= HIFN_MAC_CMD_ALG_MD5 |
HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HMAC |
HIFN_MAC_CMD_POS_IPSEC | HIFN_MAC_CMD_TRUNC;
break;
case CRYPTO_SHA1:
cmd->mac_masks |= HIFN_MAC_CMD_ALG_SHA1 |
HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HASH |
HIFN_MAC_CMD_POS_IPSEC;
break;
case CRYPTO_SHA1_HMAC:
cmd->mac_masks |= HIFN_MAC_CMD_ALG_SHA1 |
HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HMAC |
HIFN_MAC_CMD_POS_IPSEC | HIFN_MAC_CMD_TRUNC;
break;
}
if (maccrd->crd_alg == CRYPTO_SHA1_HMAC ||
maccrd->crd_alg == CRYPTO_MD5_HMAC) {
cmd->mac_masks |= HIFN_MAC_CMD_NEW_KEY;
bcopy(maccrd->crd_key, cmd->mac, maccrd->crd_klen >> 3);
bzero(cmd->mac + (maccrd->crd_klen >> 3),
HIFN_MAC_KEY_LENGTH - (maccrd->crd_klen >> 3));
}
}
cmd->crp = crp;
cmd->session_num = session;
cmd->softc = sc;
err = hifn_crypto(sc, cmd, crp, hint);
if (!err) {
return 0;
} else if (err == ERESTART) {
/*
* There weren't enough resources to dispatch the request
* to the part. Notify the caller so they'll requeue this
* request and resubmit it again soon.
*/
#ifdef HIFN_DEBUG
if (hifn_debug)
device_printf(sc->sc_dev, "requeue request\n");
#endif
kfree(cmd);
sc->sc_needwakeup |= CRYPTO_SYMQ;
return (err);
}
errout:
if (cmd != NULL)
kfree(cmd);
if (err == EINVAL)
hifnstats.hst_invalid++;
else
hifnstats.hst_nomem++;
crp->crp_etype = err;
crypto_done(crp);
return (err);
}
static void
hifn_abort(struct hifn_softc *sc)
{
struct hifn_dma *dma = sc->sc_dma;
struct hifn_command *cmd;
struct cryptop *crp;
int i, u;
DPRINTF("%s()\n", __FUNCTION__);
i = dma->resk; u = dma->resu;
while (u != 0) {
cmd = dma->hifn_commands[i];
KASSERT(cmd != NULL, ("hifn_abort: null command slot %u", i));
dma->hifn_commands[i] = NULL;
crp = cmd->crp;
if ((dma->resr[i].l & htole32(HIFN_D_VALID)) == 0) {
/* Salvage what we can. */
u_int8_t *macbuf;
if (cmd->base_masks & HIFN_BASE_CMD_MAC) {
macbuf = dma->result_bufs[i];
macbuf += 12;
} else
macbuf = NULL;
hifnstats.hst_opackets++;
hifn_callback(sc, cmd, macbuf);
} else {
#if 0
if (cmd->src_map == cmd->dst_map) {
bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
} else {
bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_sync(sc->sc_dmat, cmd->dst_map,
BUS_DMASYNC_POSTREAD);
}
#endif
if (cmd->src_skb != cmd->dst_skb) {
#ifdef NOTYET
m_freem(cmd->src_m);
crp->crp_buf = (caddr_t)cmd->dst_m;
#else
device_printf(sc->sc_dev,
"%s,%d: CRYPTO_F_SKBUF src != dst not implemented\n",
__FILE__, __LINE__);
#endif
}
/* non-shared buffers cannot be restarted */
if (cmd->src_map != cmd->dst_map) {
/*
* XXX should be EAGAIN, delayed until
* after the reset.
*/
crp->crp_etype = ENOMEM;
pci_unmap_buf(sc, &cmd->dst);
} else
crp->crp_etype = ENOMEM;
pci_unmap_buf(sc, &cmd->src);
kfree(cmd);
if (crp->crp_etype != EAGAIN)
crypto_done(crp);
}
if (++i == HIFN_D_RES_RSIZE)
i = 0;
u--;
}
dma->resk = i; dma->resu = u;
hifn_reset_board(sc, 1);
hifn_init_dma(sc);
hifn_init_pci_registers(sc);
}
static void
hifn_callback(struct hifn_softc *sc, struct hifn_command *cmd, u_int8_t *macbuf)
{
struct hifn_dma *dma = sc->sc_dma;
struct cryptop *crp = cmd->crp;
struct cryptodesc *crd;
int i, u, ivlen;
DPRINTF("%s()\n", __FUNCTION__);
#if 0
if (cmd->src_map == cmd->dst_map) {
bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD);
} else {
bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_sync(sc->sc_dmat, cmd->dst_map,
BUS_DMASYNC_POSTREAD);
}
#endif
if (crp->crp_flags & CRYPTO_F_SKBUF) {
if (cmd->src_skb != cmd->dst_skb) {
#ifdef NOTYET
crp->crp_buf = (caddr_t)cmd->dst_m;
totlen = cmd->src_mapsize;
for (m = cmd->dst_m; m != NULL; m = m->m_next) {
if (totlen < m->m_len) {
m->m_len = totlen;
totlen = 0;
} else
totlen -= m->m_len;
}
cmd->dst_m->m_pkthdr.len = cmd->src_m->m_pkthdr.len;
m_freem(cmd->src_m);
#else
device_printf(sc->sc_dev,
"%s,%d: CRYPTO_F_SKBUF src != dst not implemented\n",
__FILE__, __LINE__);
#endif
}
}
if (cmd->sloplen != 0) {
crypto_copyback(crp->crp_flags, crp->crp_buf,
cmd->src_mapsize - cmd->sloplen, cmd->sloplen,
(caddr_t)&dma->slop[cmd->slopidx]);
}
i = dma->dstk; u = dma->dstu;
while (u != 0) {
if (i == HIFN_D_DST_RSIZE)
i = 0;
#if 0
bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
#endif
if (dma->dstr[i].l & htole32(HIFN_D_VALID)) {
#if 0
bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
#endif
break;
}
i++, u--;
}
dma->dstk = i; dma->dstu = u;
hifnstats.hst_obytes += cmd->dst_mapsize;
if ((cmd->base_masks & (HIFN_BASE_CMD_CRYPT | HIFN_BASE_CMD_DECODE)) ==
HIFN_BASE_CMD_CRYPT) {
for (crd = crp->crp_desc; crd; crd = crd->crd_next) {
if (crd->crd_alg != CRYPTO_DES_CBC &&
crd->crd_alg != CRYPTO_3DES_CBC &&
crd->crd_alg != CRYPTO_AES_CBC)
continue;
ivlen = ((crd->crd_alg == CRYPTO_AES_CBC) ?
HIFN_AES_IV_LENGTH : HIFN_IV_LENGTH);
crypto_copydata(crp->crp_flags, crp->crp_buf,
crd->crd_skip + crd->crd_len - ivlen, ivlen,
cmd->softc->sc_sessions[cmd->session_num].hs_iv);
break;
}
}
if (macbuf != NULL) {
for (crd = crp->crp_desc; crd; crd = crd->crd_next) {
int len;
if (crd->crd_alg != CRYPTO_MD5 &&
crd->crd_alg != CRYPTO_SHA1 &&
crd->crd_alg != CRYPTO_MD5_HMAC &&
crd->crd_alg != CRYPTO_SHA1_HMAC) {
continue;
}
len = cmd->softc->sc_sessions[cmd->session_num].hs_mlen;
crypto_copyback(crp->crp_flags, crp->crp_buf,
crd->crd_inject, len, macbuf);
break;
}
}
if (cmd->src_map != cmd->dst_map)
pci_unmap_buf(sc, &cmd->dst);
pci_unmap_buf(sc, &cmd->src);
kfree(cmd);
crypto_done(crp);
}
/*
* 7811 PB3 rev/2 parts lock-up on burst writes to Group 0
* and Group 1 registers; avoid conditions that could create
* burst writes by doing a read in between the writes.
*
* NB: The read we interpose is always to the same register;
* we do this because reading from an arbitrary (e.g. last)
* register may not always work.
*/
static void
hifn_write_reg_0(struct hifn_softc *sc, bus_size_t reg, u_int32_t val)
{
if (sc->sc_flags & HIFN_IS_7811) {
if (sc->sc_bar0_lastreg == reg - 4)
readl(sc->sc_bar0 + HIFN_0_PUCNFG);
sc->sc_bar0_lastreg = reg;
}
writel(val, sc->sc_bar0 + reg);
}
static void
hifn_write_reg_1(struct hifn_softc *sc, bus_size_t reg, u_int32_t val)
{
if (sc->sc_flags & HIFN_IS_7811) {
if (sc->sc_bar1_lastreg == reg - 4)
readl(sc->sc_bar1 + HIFN_1_REVID);
sc->sc_bar1_lastreg = reg;
}
writel(val, sc->sc_bar1 + reg);
}
static struct pci_device_id hifn_pci_tbl[] = {
{ PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_7951,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, },
{ PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_7955,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, },
{ PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_7956,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, },
{ PCI_VENDOR_NETSEC, PCI_PRODUCT_NETSEC_7751,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, },
{ PCI_VENDOR_INVERTEX, PCI_PRODUCT_INVERTEX_AEON,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, },
{ PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_7811,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, },
/*
* Other vendors share this PCI ID as well, such as
* http://www.powercrypt.com, and obviously they also
* use the same key.
*/
{ PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_7751,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, },
{ 0, 0, 0, 0, 0, 0, }
};
MODULE_DEVICE_TABLE(pci, hifn_pci_tbl);
static struct pci_driver hifn_driver = {
.name = "hifn",
.id_table = hifn_pci_tbl,
.probe = hifn_probe,
.remove = hifn_remove,
/* add PM stuff here one day */
};
static int __init hifn_init (void)
{
struct hifn_softc *sc = NULL;
int rc;
DPRINTF("%s(%p)\n", __FUNCTION__, hifn_init);
rc = pci_register_driver(&hifn_driver);
pci_register_driver_compat(&hifn_driver, rc);
return rc;
}
static void __exit hifn_exit (void)
{
pci_unregister_driver(&hifn_driver);
}
module_init(hifn_init);
module_exit(hifn_exit);
MODULE_LICENSE("BSD");
MODULE_AUTHOR("David McCullough <david_mccullough@mcafee.com>");
MODULE_DESCRIPTION("OCF driver for hifn PCI crypto devices");
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