422 lines
10 KiB
C
422 lines
10 KiB
C
/*-
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* Driver for Hifn HIPP-I/II chipset
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* Copyright (c) 2006 Michael Richardson <mcr@xelerance.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Effort sponsored by Hifn Inc.
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*
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*/
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/*
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* Driver for various Hifn encryption processors.
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*/
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#ifndef AUTOCONF_INCLUDED
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#include <linux/config.h>
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#endif
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/list.h>
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#include <linux/slab.h>
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#include <linux/wait.h>
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#include <linux/sched.h>
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#include <linux/pci.h>
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/spinlock.h>
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#include <linux/random.h>
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#include <linux/version.h>
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#include <linux/skbuff.h>
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#include <linux/uio.h>
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#include <linux/sysfs.h>
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#include <linux/miscdevice.h>
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#include <asm/io.h>
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#include <cryptodev.h>
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#include "hifnHIPPreg.h"
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#include "hifnHIPPvar.h"
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#if 1
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#define DPRINTF(a...) if (hipp_debug) { \
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printk("%s: ", sc ? \
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device_get_nameunit(sc->sc_dev) : "hifn"); \
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printk(a); \
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} else
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#else
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#define DPRINTF(a...)
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#endif
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typedef int bus_size_t;
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static inline int
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pci_get_revid(struct pci_dev *dev)
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{
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u8 rid = 0;
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pci_read_config_byte(dev, PCI_REVISION_ID, &rid);
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return rid;
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}
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#define debug hipp_debug
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int hipp_debug = 0;
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module_param(hipp_debug, int, 0644);
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MODULE_PARM_DESC(hipp_debug, "Enable debug");
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int hipp_maxbatch = 1;
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module_param(hipp_maxbatch, int, 0644);
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MODULE_PARM_DESC(hipp_maxbatch, "max ops to batch w/o interrupt");
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static int hipp_probe(struct pci_dev *dev, const struct pci_device_id *ent);
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static void hipp_remove(struct pci_dev *dev);
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19)
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static irqreturn_t hipp_intr(int irq, void *arg);
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#else
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static irqreturn_t hipp_intr(int irq, void *arg, struct pt_regs *regs);
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#endif
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static int hipp_num_chips = 0;
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static struct hipp_softc *hipp_chip_idx[HIPP_MAX_CHIPS];
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static int hipp_newsession(device_t, u_int32_t *, struct cryptoini *);
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static int hipp_freesession(device_t, u_int64_t);
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static int hipp_process(device_t, struct cryptop *, int);
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static device_method_t hipp_methods = {
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/* crypto device methods */
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DEVMETHOD(cryptodev_newsession, hipp_newsession),
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DEVMETHOD(cryptodev_freesession,hipp_freesession),
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DEVMETHOD(cryptodev_process, hipp_process),
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};
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static __inline u_int32_t
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READ_REG(struct hipp_softc *sc, unsigned int barno, bus_size_t reg)
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{
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u_int32_t v = readl(sc->sc_bar[barno] + reg);
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//sc->sc_bar0_lastreg = (bus_size_t) -1;
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return (v);
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}
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static __inline void
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WRITE_REG(struct hipp_softc *sc, unsigned int barno, bus_size_t reg, u_int32_t val)
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{
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writel(val, sc->sc_bar[barno] + reg);
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}
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#define READ_REG_0(sc, reg) READ_REG(sc, 0, reg)
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#define WRITE_REG_0(sc, reg, val) WRITE_REG(sc,0, reg, val)
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#define READ_REG_1(sc, reg) READ_REG(sc, 1, reg)
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#define WRITE_REG_1(sc, reg, val) WRITE_REG(sc,1, reg, val)
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static int
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hipp_newsession(device_t dev, u_int32_t *sidp, struct cryptoini *cri)
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{
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return EINVAL;
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}
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static int
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hipp_freesession(device_t dev, u_int64_t tid)
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{
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return EINVAL;
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}
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static int
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hipp_process(device_t dev, struct cryptop *crp, int hint)
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{
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return EINVAL;
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}
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static const char*
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hipp_partname(struct hipp_softc *sc, char buf[128], size_t blen)
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{
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char *n = NULL;
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switch (pci_get_vendor(sc->sc_pcidev)) {
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case PCI_VENDOR_HIFN:
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switch (pci_get_device(sc->sc_pcidev)) {
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case PCI_PRODUCT_HIFN_7855: n = "Hifn 7855";
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case PCI_PRODUCT_HIFN_8155: n = "Hifn 8155";
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case PCI_PRODUCT_HIFN_6500: n = "Hifn 6500";
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}
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}
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if(n==NULL) {
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snprintf(buf, blen, "VID=%02x,PID=%02x",
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pci_get_vendor(sc->sc_pcidev),
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pci_get_device(sc->sc_pcidev));
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} else {
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buf[0]='\0';
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strncat(buf, n, blen);
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}
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return buf;
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}
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struct hipp_fs_entry {
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struct attribute attr;
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/* other stuff */
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};
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static ssize_t
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cryptoid_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct hipp_softc *sc;
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sc = pci_get_drvdata(to_pci_dev (dev));
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return sprintf (buf, "%d\n", sc->sc_cid);
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}
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struct device_attribute hipp_dev_cryptoid = __ATTR_RO(cryptoid);
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/*
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* Attach an interface that successfully probed.
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*/
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static int
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hipp_probe(struct pci_dev *dev, const struct pci_device_id *ent)
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{
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struct hipp_softc *sc = NULL;
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int i;
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//char rbase;
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//u_int16_t ena;
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int rev;
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//int rseg;
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int rc;
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DPRINTF("%s()\n", __FUNCTION__);
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if (pci_enable_device(dev) < 0)
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return(-ENODEV);
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if (pci_set_mwi(dev))
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return(-ENODEV);
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if (!dev->irq) {
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printk("hifn: found device with no IRQ assigned. check BIOS settings!");
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pci_disable_device(dev);
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return(-ENODEV);
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}
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sc = (struct hipp_softc *) kmalloc(sizeof(*sc), GFP_KERNEL);
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if (!sc)
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return(-ENOMEM);
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memset(sc, 0, sizeof(*sc));
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softc_device_init(sc, "hifn-hipp", hipp_num_chips, hipp_methods);
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sc->sc_pcidev = dev;
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sc->sc_irq = -1;
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sc->sc_cid = -1;
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sc->sc_num = hipp_num_chips++;
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if (sc->sc_num < HIPP_MAX_CHIPS)
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hipp_chip_idx[sc->sc_num] = sc;
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pci_set_drvdata(sc->sc_pcidev, sc);
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spin_lock_init(&sc->sc_mtx);
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/*
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* Setup PCI resources.
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* The READ_REG_0, WRITE_REG_0, READ_REG_1,
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* and WRITE_REG_1 macros throughout the driver are used
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* to permit better debugging.
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*/
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for(i=0; i<4; i++) {
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unsigned long mem_start, mem_len;
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mem_start = pci_resource_start(sc->sc_pcidev, i);
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mem_len = pci_resource_len(sc->sc_pcidev, i);
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sc->sc_barphy[i] = (caddr_t)mem_start;
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sc->sc_bar[i] = (ocf_iomem_t) ioremap(mem_start, mem_len);
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if (!sc->sc_bar[i]) {
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device_printf(sc->sc_dev, "cannot map bar%d register space\n", i);
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goto fail;
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}
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}
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//hipp_reset_board(sc, 0);
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pci_set_master(sc->sc_pcidev);
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/*
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* Arrange the interrupt line.
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*/
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rc = request_irq(dev->irq, hipp_intr, IRQF_SHARED, "hifn", sc);
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if (rc) {
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device_printf(sc->sc_dev, "could not map interrupt: %d\n", rc);
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goto fail;
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}
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sc->sc_irq = dev->irq;
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rev = READ_REG_1(sc, HIPP_1_REVID) & 0xffff;
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{
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char b[32];
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device_printf(sc->sc_dev, "%s, rev %u",
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hipp_partname(sc, b, sizeof(b)), rev);
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}
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#if 0
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if (sc->sc_flags & HIFN_IS_7956)
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printf(", pll=0x%x<%s clk, %ux mult>",
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sc->sc_pllconfig,
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sc->sc_pllconfig & HIFN_PLL_REF_SEL ? "ext" : "pci",
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2 + 2*((sc->sc_pllconfig & HIFN_PLL_ND) >> 11));
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#endif
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printf("\n");
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sc->sc_cid = crypto_get_driverid(softc_get_device(sc),CRYPTOCAP_F_HARDWARE);
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if (sc->sc_cid < 0) {
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device_printf(sc->sc_dev, "could not get crypto driver id\n");
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goto fail;
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}
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#if 0 /* cannot work with a non-GPL module */
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/* make a sysfs entry to let the world know what entry we got */
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sysfs_create_file(&sc->sc_pcidev->dev.kobj, &hipp_dev_cryptoid.attr);
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#endif
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#if 0
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init_timer(&sc->sc_tickto);
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sc->sc_tickto.function = hifn_tick;
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sc->sc_tickto.data = (unsigned long) sc->sc_num;
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mod_timer(&sc->sc_tickto, jiffies + HZ);
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#endif
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#if 0 /* no code here yet ?? */
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crypto_register(sc->sc_cid, CRYPTO_3DES_CBC, 0, 0);
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#endif
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return (0);
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fail:
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if (sc->sc_cid >= 0)
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crypto_unregister_all(sc->sc_cid);
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if (sc->sc_irq != -1)
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free_irq(sc->sc_irq, sc);
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#if 0
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if (sc->sc_dma) {
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/* Turn off DMA polling */
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WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
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HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
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pci_free_consistent(sc->sc_pcidev,
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sizeof(*sc->sc_dma),
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sc->sc_dma, sc->sc_dma_physaddr);
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}
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#endif
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kfree(sc);
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return (-ENXIO);
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}
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/*
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* Detach an interface that successfully probed.
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*/
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static void
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hipp_remove(struct pci_dev *dev)
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{
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struct hipp_softc *sc = pci_get_drvdata(dev);
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unsigned long l_flags;
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DPRINTF("%s()\n", __FUNCTION__);
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/* disable interrupts */
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HIPP_LOCK(sc);
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#if 0
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WRITE_REG_1(sc, HIFN_1_DMA_IER, 0);
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HIFN_UNLOCK(sc);
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/*XXX other resources */
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del_timer_sync(&sc->sc_tickto);
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/* Turn off DMA polling */
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WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
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HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
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#endif
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crypto_unregister_all(sc->sc_cid);
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free_irq(sc->sc_irq, sc);
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#if 0
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pci_free_consistent(sc->sc_pcidev, sizeof(*sc->sc_dma),
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sc->sc_dma, sc->sc_dma_physaddr);
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#endif
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}
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19)
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static irqreturn_t hipp_intr(int irq, void *arg)
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#else
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static irqreturn_t hipp_intr(int irq, void *arg, struct pt_regs *regs)
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#endif
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{
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struct hipp_softc *sc = arg;
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sc = sc; /* shut up compiler */
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return IRQ_HANDLED;
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}
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static struct pci_device_id hipp_pci_tbl[] = {
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{ PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_7855,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, },
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{ PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_8155,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, },
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{ 0 }
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};
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MODULE_DEVICE_TABLE(pci, hipp_pci_tbl);
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static struct pci_driver hipp_driver = {
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.name = "hipp",
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.id_table = hipp_pci_tbl,
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.probe = hipp_probe,
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.remove = hipp_remove,
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/* add PM stuff here one day */
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};
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static int __init hipp_init (void)
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{
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struct hipp_softc *sc = NULL;
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int rc;
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DPRINTF("%s(%p)\n", __FUNCTION__, hipp_init);
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rc = pci_register_driver(&hipp_driver);
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pci_register_driver_compat(&hipp_driver, rc);
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return rc;
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}
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static void __exit hipp_exit (void)
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{
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pci_unregister_driver(&hipp_driver);
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}
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module_init(hipp_init);
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module_exit(hipp_exit);
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MODULE_LICENSE("BSD");
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MODULE_AUTHOR("Michael Richardson <mcr@xelerance.com>");
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MODULE_DESCRIPTION("OCF driver for hifn HIPP-I/II PCI crypto devices");
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