Changes to add support for the PCI version of the Cyclades Cyclom-Y

serial adapter, and support for multiple Cyclom controllers.

1 files changed, 132 insertions, 0 deletions

diff --git a/sys/pci/cy_pci.c b/sys/pci/cy_pci.c
new file mode 100644
index 0000000..d9bbd72
--- /dev/null
+++ b/sys/pci/cy_pci.c
@@ -0,0 +1,132 @@
+/*
+ * Copyright (c) 1996, David Greenman
+ * All rights reserved.
+ *
+ * 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 unmodified, 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
+ *
+ *	$Id$
+ */
+
+/*
+ * Cyclades Y PCI serial interface driver
+ */
+
+#include <pci.h>
+#if NPCI > 0
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/malloc.h>
+#include <sys/kernel.h>
+#include <vm/vm.h>
+#include <vm/pmap.h>
+
+#include <pci/pcivar.h>
+
+#include <pci/cy_pcireg.h>
+
+static char *cy_probe		__P((pcici_t, pcidi_t));
+static void cy_attach		__P((pcici_t, int));
+
+extern int cyattach_common(void *, int); /* Not exactly correct */
+extern void cyintr(int);
+
+static u_long cy_count;
+
+static struct pci_device cy_device = {
+        "cy",
+        cy_probe,
+        cy_attach,
+        &cy_count,
+        NULL
+};
+DATA_SET(pcidevice_set, cy_device);
+
+static char *
+cy_probe(config_id, device_id)
+	pcici_t config_id;
+	pcidi_t device_id;
+{
+	if ((device_id & 0xffff) == CY_VENDORID_CYCLADES &&
+	    ((device_id >> 16) == CY_DEVICEID_CYCLOM_Y_1 ||
+	     (device_id >> 16) == CY_DEVICEID_CYCLOM_Y_2))
+		return ("Cyclades Cyclom-Y Serial Adapter");
+	return NULL;
+}
+
+static void
+cy_attach(config_id, unit)
+	pcici_t config_id;
+	int unit;
+{
+	vm_offset_t paddr;
+	void *vaddr;
+	u_int32_t ioport;
+	int adapter;
+
+	ioport = (u_int32_t) pci_conf_read(config_id, CY_PCI_BASE_ADDR1) & ~0x3;
+	paddr = pci_conf_read(config_id, CY_PCI_BASE_ADDR2) & ~0xf;
+#if 0
+	if (!pci_map_mem(config_id, CY_PCI_BASE_ADDR2, &vaddr, &paddr)) {
+		printf("cy%d: couldn't map shared memory\n", unit);
+		return;
+	};
+#endif
+	vaddr = pmap_mapdev(paddr, 0x4000);
+
+	adapter = cyattach_common(vaddr, 1);
+	if (adapter < 0) {
+		/*
+		 * No ports found. Release resources and punt.
+		 */
+		printf("cy%d: no ports found!", unit);
+		goto fail;
+	}
+
+	/*
+	 * Allocate our interrupt.
+	 * XXX	Using the ISA interrupt handler directly is a bit of a violation
+	 *	since it doesn't actually take the same argument. For PCI, the
+	 *	argument is a void * token, but for ISA it is a unit. Since
+	 *	there is no overlap in PCI/ISA unit numbers for this driver, and
+	 *	since the ISA driver must handle the interrupt anyway, we use
+	 *	the unit number as the token even for PCI.
+	 */
+	if (!pci_map_int(config_id, (pci_inthand_t *)cyintr, (void *)adapter, &tty_imask)) {
+		printf("cy%d: couldn't map interrupt\n", unit);
+		goto fail;
+	}
+	/*
+	 * Enable the "local" interrupt input to generate a
+	 * PCI interrupt.
+	 */
+	outw(ioport + CY_PLX_ICS, inw(CY_PLX_ICS) |
+	    CY_PLX_ICS_IENABLE | CY_PLX_ICS_LOCAL_IENABLE);
+
+	return;
+
+fail:
+	/* XXX should release any allocated virtual memory */
+	return;
+}
+
+#endif /* NPCI > 0 */