--- /dev/null
+/*-
+ * Driver for Hifn HIPP-I/II chipset
+ * Copyright (c) 2006 Michael Richardson <mcr@xelerance.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 by Hifn Inc.
+ *
+ */
+
+/*
+ * 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 <linux/uio.h>
+#include <linux/sysfs.h>
+#include <linux/miscdevice.h>
+#include <asm/io.h>
+
+#include <cryptodev.h>
+
+#include "hifnHIPPreg.h"
+#include "hifnHIPPvar.h"
+
+#if 1
+#define DPRINTF(a...) if (hipp_debug) { \
+ printk("%s: ", sc ? \
+ device_get_nameunit(sc->sc_dev) : "hifn"); \
+ printk(a); \
+ } else
+#else
+#define DPRINTF(a...)
+#endif
+
+typedef int bus_size_t;
+
+static inline int
+pci_get_revid(struct pci_dev *dev)
+{
+ u8 rid = 0;
+ pci_read_config_byte(dev, PCI_REVISION_ID, &rid);
+ return rid;
+}
+
+#define debug hipp_debug
+int hipp_debug = 0;
+module_param(hipp_debug, int, 0644);
+MODULE_PARM_DESC(hipp_debug, "Enable debug");
+
+int hipp_maxbatch = 1;
+module_param(hipp_maxbatch, int, 0644);
+MODULE_PARM_DESC(hipp_maxbatch, "max ops to batch w/o interrupt");
+
+static int hipp_probe(struct pci_dev *dev, const struct pci_device_id *ent);
+static void hipp_remove(struct pci_dev *dev);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19)
+static irqreturn_t hipp_intr(int irq, void *arg);
+#else
+static irqreturn_t hipp_intr(int irq, void *arg, struct pt_regs *regs);
+#endif
+
+static int hipp_num_chips = 0;
+static struct hipp_softc *hipp_chip_idx[HIPP_MAX_CHIPS];
+
+static int hipp_newsession(device_t, u_int32_t *, struct cryptoini *);
+static int hipp_freesession(device_t, u_int64_t);
+static int hipp_process(device_t, struct cryptop *, int);
+
+static device_method_t hipp_methods = {
+ /* crypto device methods */
+ DEVMETHOD(cryptodev_newsession, hipp_newsession),
+ DEVMETHOD(cryptodev_freesession,hipp_freesession),
+ DEVMETHOD(cryptodev_process, hipp_process),
+};
+
+static __inline u_int32_t
+READ_REG(struct hipp_softc *sc, unsigned int barno, bus_size_t reg)
+{
+ u_int32_t v = readl(sc->sc_bar[barno] + reg);
+ //sc->sc_bar0_lastreg = (bus_size_t) -1;
+ return (v);
+}
+static __inline void
+WRITE_REG(struct hipp_softc *sc, unsigned int barno, bus_size_t reg, u_int32_t val)
+{
+ writel(val, sc->sc_bar[barno] + reg);
+}
+
+#define READ_REG_0(sc, reg) READ_REG(sc, 0, reg)
+#define WRITE_REG_0(sc, reg, val) WRITE_REG(sc,0, reg, val)
+#define READ_REG_1(sc, reg) READ_REG(sc, 1, reg)
+#define WRITE_REG_1(sc, reg, val) WRITE_REG(sc,1, reg, val)
+
+static int
+hipp_newsession(device_t dev, u_int32_t *sidp, struct cryptoini *cri)
+{
+ return EINVAL;
+}
+
+static int
+hipp_freesession(device_t dev, u_int64_t tid)
+{
+ return EINVAL;
+}
+
+static int
+hipp_process(device_t dev, struct cryptop *crp, int hint)
+{
+ return EINVAL;
+}
+
+static const char*
+hipp_partname(struct hipp_softc *sc, char buf[128], size_t blen)
+{
+ char *n = NULL;
+
+ switch (pci_get_vendor(sc->sc_pcidev)) {
+ case PCI_VENDOR_HIFN:
+ switch (pci_get_device(sc->sc_pcidev)) {
+ case PCI_PRODUCT_HIFN_7855: n = "Hifn 7855";
+ case PCI_PRODUCT_HIFN_8155: n = "Hifn 8155";
+ case PCI_PRODUCT_HIFN_6500: n = "Hifn 6500";
+ }
+ }
+
+ if(n==NULL) {
+ snprintf(buf, blen, "VID=%02x,PID=%02x",
+ pci_get_vendor(sc->sc_pcidev),
+ pci_get_device(sc->sc_pcidev));
+ } else {
+ buf[0]='\0';
+ strncat(buf, n, blen);
+ }
+ return buf;
+}
+
+struct hipp_fs_entry {
+ struct attribute attr;
+ /* other stuff */
+};
+
+
+static ssize_t
+cryptoid_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct hipp_softc *sc;
+
+ sc = pci_get_drvdata(to_pci_dev (dev));
+ return sprintf (buf, "%d\n", sc->sc_cid);
+}
+
+struct device_attribute hipp_dev_cryptoid = __ATTR_RO(cryptoid);
+
+/*
+ * Attach an interface that successfully probed.
+ */
+static int
+hipp_probe(struct pci_dev *dev, const struct pci_device_id *ent)
+{
+ struct hipp_softc *sc = NULL;
+ int i;
+ //char rbase;
+ //u_int16_t ena;
+ int rev;
+ //int rseg;
+ int rc;
+
+ 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 hipp_softc *) kmalloc(sizeof(*sc), GFP_KERNEL);
+ if (!sc)
+ return(-ENOMEM);
+ memset(sc, 0, sizeof(*sc));
+
+ softc_device_init(sc, "hifn-hipp", hipp_num_chips, hipp_methods);
+
+ sc->sc_pcidev = dev;
+ sc->sc_irq = -1;
+ sc->sc_cid = -1;
+ sc->sc_num = hipp_num_chips++;
+
+ if (sc->sc_num < HIPP_MAX_CHIPS)
+ hipp_chip_idx[sc->sc_num] = sc;
+
+ pci_set_drvdata(sc->sc_pcidev, sc);
+
+ spin_lock_init(&sc->sc_mtx);
+
+ /*
+ * Setup PCI resources.
+ * The READ_REG_0, WRITE_REG_0, READ_REG_1,
+ * and WRITE_REG_1 macros throughout the driver are used
+ * to permit better debugging.
+ */
+ for(i=0; i<4; i++) {
+ unsigned long mem_start, mem_len;
+ mem_start = pci_resource_start(sc->sc_pcidev, i);
+ mem_len = pci_resource_len(sc->sc_pcidev, i);
+ sc->sc_barphy[i] = (caddr_t)mem_start;
+ sc->sc_bar[i] = (ocf_iomem_t) ioremap(mem_start, mem_len);
+ if (!sc->sc_bar[i]) {
+ device_printf(sc->sc_dev, "cannot map bar%d register space\n", i);
+ goto fail;
+ }
+ }
+
+ //hipp_reset_board(sc, 0);
+ pci_set_master(sc->sc_pcidev);
+
+ /*
+ * Arrange the interrupt line.
+ */
+ rc = request_irq(dev->irq, hipp_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;
+
+ rev = READ_REG_1(sc, HIPP_1_REVID) & 0xffff;
+
+ {
+ char b[32];
+ device_printf(sc->sc_dev, "%s, rev %u",
+ hipp_partname(sc, b, sizeof(b)), rev);
+ }
+
+#if 0
+ 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));
+#endif
+ 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;
+ }
+
+#if 0 /* cannot work with a non-GPL module */
+ /* make a sysfs entry to let the world know what entry we got */
+ sysfs_create_file(&sc->sc_pcidev->dev.kobj, &hipp_dev_cryptoid.attr);
+#endif
+
+#if 0
+ 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);
+#endif
+
+#if 0 /* no code here yet ?? */
+ crypto_register(sc->sc_cid, CRYPTO_3DES_CBC, 0, 0);
+#endif
+
+ 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 0
+ 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);
+ }
+#endif
+ kfree(sc);
+ return (-ENXIO);
+}
+
+/*
+ * Detach an interface that successfully probed.
+ */
+static void
+hipp_remove(struct pci_dev *dev)
+{
+ struct hipp_softc *sc = pci_get_drvdata(dev);
+ unsigned long l_flags;
+
+ DPRINTF("%s()\n", __FUNCTION__);
+
+ /* disable interrupts */
+ HIPP_LOCK(sc);
+
+#if 0
+ 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);
+#endif
+
+ crypto_unregister_all(sc->sc_cid);
+
+ free_irq(sc->sc_irq, sc);
+
+#if 0
+ pci_free_consistent(sc->sc_pcidev, sizeof(*sc->sc_dma),
+ sc->sc_dma, sc->sc_dma_physaddr);
+#endif
+}
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19)
+static irqreturn_t hipp_intr(int irq, void *arg)
+#else
+static irqreturn_t hipp_intr(int irq, void *arg, struct pt_regs *regs)
+#endif
+{
+ struct hipp_softc *sc = arg;
+
+ sc = sc; /* shut up compiler */
+
+ return IRQ_HANDLED;
+}
+
+static struct pci_device_id hipp_pci_tbl[] = {
+ { PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_7855,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, },
+ { PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_8155,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, },
+ { 0 }
+};
+MODULE_DEVICE_TABLE(pci, hipp_pci_tbl);
+
+static struct pci_driver hipp_driver = {
+ .name = "hipp",
+ .id_table = hipp_pci_tbl,
+ .probe = hipp_probe,
+ .remove = hipp_remove,
+ /* add PM stuff here one day */
+};
+
+static int __init hipp_init (void)
+{
+ struct hipp_softc *sc = NULL;
+ int rc;
+
+ DPRINTF("%s(%p)\n", __FUNCTION__, hipp_init);
+
+ rc = pci_register_driver(&hipp_driver);
+ pci_register_driver_compat(&hipp_driver, rc);
+
+ return rc;
+}
+
+static void __exit hipp_exit (void)
+{
+ pci_unregister_driver(&hipp_driver);
+}
+
+module_init(hipp_init);
+module_exit(hipp_exit);
+
+MODULE_LICENSE("BSD");
+MODULE_AUTHOR("Michael Richardson <mcr@xelerance.com>");
+MODULE_DESCRIPTION("OCF driver for hifn HIPP-I/II PCI crypto devices");
projects / openwrt / svn-archive / archive.git / blobdiff