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/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*
* $Id: xrpu.c,v 1.1 1998/05/30 18:28:11 phk Exp $
*
* A very simple device driver for PCI cards based on Xilinx 6200 series
* FPGA/RPU devices. Current Functionality is to allow you to open and
* mmap the entire thing into your program.
*
* Hardware currently supported:
* www.vcc.com HotWorks 1 6216 based card.
*
*/
#ifndef DEVFS
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/devfsext.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
static char* xrpu_probe (pcici_t tag, pcidi_t type);
static void xrpu_attach (pcici_t tag, int unit);
static u_long xrpu_count;
static vm_offset_t virbase, physbase;
static int
xrpuopen(dev_t dev, int flag, int mode, struct proc *p)
{
return (0);
}
static int
xrpuclose(dev_t dev, int flag, int mode, struct proc *p)
{
return (0);
}
static int
xrpummap(dev_t dev, int offset, int nprot)
{
if (offset >= 0x1000000)
return (-1);
return (i386_btop(physbase + offset));
}
/*
* Device driver initialization stuff
*/
#define CDEV_MAJOR 100
static struct cdevsw xrpudevsw = {
xrpuopen, xrpuclose, noread, nowrite,
noioctl, nullstop, noreset, nodevtotty,
seltrue, xrpummap, nostrategy, "xrpu",
NULL, -1
};
/*
* PCI initialization stuff
*/
static struct pci_device xrpu_device = {
"xrpu",
xrpu_probe,
xrpu_attach,
&xrpu_count,
NULL
};
DATA_SET (pcidevice_set, xrpu_device);
static char*
xrpu_probe (pcici_t tag, pcidi_t typea)
{
int data = pci_conf_read(tag, PCI_CLASS_REG);
u_int id = pci_conf_read(tag, PCI_ID_REG);
const char *vendor, *chip, *type;
vendor = chip = type = 0;
if (id == 0x6216133e) {
return "VCC Hotworks-I xc6216";
}
return 0;
}
static void
xrpu_attach (pcici_t tag, int unit)
{
dev_t cdev = makedev(CDEV_MAJOR, 0);
pci_map_mem(tag, PCI_MAP_REG_START, &virbase, &physbase);
printf("Mapped physbase %#lx to virbase %#lx\n",
(u_long)physbase, (u_long)virbase);
cdevsw_add(&cdev, &xrpudevsw, NULL);
devfs_add_devswf(&xrpudevsw, 0, DV_CHR, UID_ROOT, GID_WHEEL, 0600,
"xrpu0");
}
#endif /* DEVFS */
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