- Framework for PCI/CardBus controllers running in PCMCIA emulation

  mode.  Currently, the only supported controller is the Cirrus Logic
  PD6832, but others can be supported with docs on them.

Submitted by:	Ted Faber <faber@ISI.EDU>

2 files changed, 216 insertions, 0 deletions

diff --git a/sys/pci/pcic_p.c b/sys/pci/pcic_p.c
new file mode 100644
index 0000000..ce7d7d5
--- /dev/null
+++ b/sys/pci/pcic_p.c
@@ -0,0 +1,167 @@
+/*
+ * Copyright (c) 1997 Ted Faber
+ * 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 immediately at the beginning of the file, without modification,
+ *    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. Absolutely no warranty of function or purpose is made by the author
+ *    Ted Faber.
+ *
+ * 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.
+ * are met:
+ */
+
+#include "pci.h"
+#if NPCI > 0
+
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/systm.h>
+#include <pci/pcireg.h>
+#include <pci/pcivar.h>
+#include <pci/pcic_p.h>
+
+static u_long pcic_pci_count = 0;
+static char *pcic_pci_probe  __P((pcici_t, pcidi_t));
+static void pd6832_legacy_init __P((pcici_t tag, int unit));
+static void pcic_pci_attach __P((pcici_t, int));
+
+static struct pci_device pcic_pci_driver = {
+	"pcic",
+	pcic_pci_probe,
+	pcic_pci_attach,
+	&pcic_pci_count,
+	NULL
+};
+
+DATA_SET (pcidevice_set, pcic_pci_driver);
+
+/*
+ * Return the ID string for a PD6832 if the vendor/product id matches,
+ * NULL otherwise.
+ */
+
+static char*
+pcic_pci_probe(pcici_t tag, pcidi_t type)
+{
+	switch(type) {
+		case PCI_DEVICE_ID_PCIC_PD6832:
+			return "Cirrus Logic CL-PD6832 CardBus Adapter";
+			break;
+		default:
+			break;
+	}
+	return NULL;
+}
+
+/*
+ * Set up the CL-PD6832 to look like a ISA based PCMCIA chip (a
+ * PD672X).  This routine is called once per PCMCIA socket.
+ */
+
+static void
+pd6832_legacy_init(pcici_t tag, int unit)
+{
+	u_long bcr; 		/* to set interrupts */
+	u_short io_port;	/* the io_port to map this slot on */
+  
+   
+	/*
+	 * I think this should be a call to pci_map_port, but that
+	 * routine won't map regiaters above 0x28, and the register we
+	 * need to map is 0x44
+	 */
+    
+	io_port = pci_conf_read(tag, PD6832_LEGACY_16BIT_IOADDR)
+	    & ~PCI_MAP_IO;
+    
+	/*
+	 * Configure the first I/O window to contain PD6832_NUM_REGS
+	 * words and deactivate the second by setting the limit lower
+	 * than the base
+	 */
+ 		
+	pci_conf_write(tag, PD6832_IO_BASE0, io_port | 1);
+	pci_conf_write(tag, PD6832_IO_LIMIT0, (io_port + PD6832_NUM_REGS) | 1);
+ 		
+	pci_conf_write(tag, PD6832_IO_BASE1, (io_port +0x20) | 1);
+	pci_conf_write(tag, PD6832_IO_LIMIT1, io_port | 1 );
+ 
+ 	       
+	/*
+	 * Set default operating mode (I/O port space) and allocate
+	 * this socket to the current unit
+	 */
+    
+	pci_conf_write(tag, PCI_COMMAND_STATUS_REG, PD6832_COMMAND_DEFAULTS );
+	pci_conf_write(tag, PD6832_SOCKET, unit);
+ 
+	/*
+	 * Set up the card inserted/card removed interrupts to come
+	 * through the isa IRQ
+	 */
+ 	       
+	bcr = pci_conf_read(tag, PD6832_BRIDGE_CONTROL);
+	bcr |= (PD6832_BCR_ISA_IRQ|PD6832_BCR_MGMT_IRQ_ENA);
+	pci_conf_write(tag, PD6832_BRIDGE_CONTROL, bcr);
+
+	if (bootverbose) { 		
+		printf("CardBus: Legacy PC-card 16bit I/O address [0x%x]\n",
+		   io_port);
+#ifdef PCIC_DEBUG
+		{
+			int	i,j;
+ 		
+			printf ("PCI Config space:\n");
+			for (j = 0; j < 0x98; j += 16) {
+				printf("%02x: ", j);
+				for (i = 0; i < 16; i += 4) {
+					printf(" %08x",
+					   pci_conf_read(tag, i+j));
+				}
+				printf("\n");
+			}
+		}
+#endif
+	}
+}
+
+
+/*
+ * This will be a general PCI based card dispatch routine.  Right now
+ * it only understands the CL-PD6832
+ */
+
+static void
+pcic_pci_attach(pcici_t config_id, int unit)
+{
+	u_long pcic_type;	/* The vendor id of the PCI pcic */
+
+	pcic_type = pci_conf_read(config_id, PCI_ID_REG);
+
+	switch (pcic_type) { 
+		case PCI_DEVICE_ID_PCIC_PD6832:
+			pd6832_legacy_init(config_id,unit);
+			break;
+	}
+	return;
+}
+
+#endif /* NPCI > 0 */
diff --git a/sys/pci/pcic_p.h b/sys/pci/pcic_p.h
new file mode 100644
index 0000000..3d7473d
--- /dev/null
+++ b/sys/pci/pcic_p.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 1997 Ted Faber
+ * 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 immediately at the beginning of the file, without modification,
+ *    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. Absolutely no warranty of function or purpose is made by the author
+ *    Ted Faber.
+ *
+ * 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.
+ */
+
+
+/* CL-PD6832 CardBus defines */
+#define PCI_DEVICE_ID_PCIC_PD6832 0x11101013ul
+
+/* PCI configuration registers */
+#define PD6832_IO_BASE0			0x002c
+#define PD6832_IO_LIMIT0		0x0030
+#define PD6832_IO_BASE1			0x0034
+#define PD6832_IO_LIMIT1		0x0038
+#define PD6832_BRIDGE_CONTROL		0x003c
+#define PD6832_LEGACY_16BIT_IOADDR	0x0044
+#define PD6832_SOCKET	 		0x004c
+
+/* Configuration constants */
+#define PD6832_BCR_MGMT_IRQ_ENA		0x08000000
+#define PD6832_BCR_ISA_IRQ		0x00800000
+#define PD6832_COMMAND_DEFAULTS		0x00000045
+#define PD6832_NUM_REGS			4
+
+/* End of CL-PD6832 defines */