Add minimum driver for XC6200 based cards. Currently it knows about

the HOT1 from www.vcc.com.

1 files changed, 110 insertions, 0 deletions

diff --git a/sys/pci/xrpu.c b/sys/pci/xrpu.c
new file mode 100644
index 0000000..4a78d60
--- /dev/null
+++ b/sys/pci/xrpu.c
@@ -0,0 +1,110 @@
+/*
+ * ----------------------------------------------------------------------------
+ * "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
+ * ----------------------------------------------------------------------------
+ *
+ * $Id$
+ *
+ * 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 %p to virbase %p\n", physbase, virbase);
+
+	cdevsw_add(&cdev, &xrpudevsw, NULL);
+
+	devfs_add_devswf(&xrpudevsw, 0, DV_CHR, UID_ROOT, GID_WHEEL, 0600,
+		"xrpu0", 0);
+}
+#endif /* DEVFS */