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