Submitted by: Wolfgang Stanglmeier <wolf@dentaro.GUN.de>

Name change: pci_intel.c -> pcisupport.c

1 files changed, 387 insertions, 0 deletions

diff --git a/sys/pci/pcisupport.c b/sys/pci/pcisupport.c
new file mode 100644
index 0000000..071ce5c
--- /dev/null
+++ b/sys/pci/pcisupport.c
@@ -0,0 +1,387 @@
+/**************************************************************************
+**
+**  $Id: pcisupport.c,v 2.5 94/10/09 21:10:29 wolf Oct11 $
+**
+**  Device driver for INTEL PCI chipsets.
+**
+**  386bsd / FreeBSD
+**
+**-------------------------------------------------------------------------
+**
+**  Written for 386bsd and FreeBSD by
+**	wolf@dentaro.gun.de	Wolfgang Stanglmeier
+**	se@mi.Uni-Koeln.de	Stefan Esser
+**
+**-------------------------------------------------------------------------
+**
+** Copyright (c) 1994 Stefan Esser.  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, 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. The name of the author may not be used to endorse or promote products
+**    derived from this software without specific prior written permission.
+**
+** 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.
+**
+***************************************************************************
+*/
+
+
+/*==========================================================
+**
+**      Include files
+**
+**==========================================================
+*/
+
+#include <sys/types.h>
+
+#include <i386/pci/pcireg.h>
+
+extern	void	printf();
+
+/*---------------------------------------------------------
+**
+**	Intel chipsets for 486 / Pentium processor
+**
+**---------------------------------------------------------
+*/
+
+static	char*	chipset_probe (pcici_t tag, pcidi_t type);
+static	void	chipset_attach(pcici_t tag, int unit);
+static	u_long	chipset_count;
+
+struct	pci_driver chipset_device = {
+	chipset_probe,
+	chipset_attach,
+	&chipset_count
+};
+
+static	char	confread(pcici_t config_id, int port);
+
+struct condmsg {
+    unsigned char	port;
+    unsigned char	mask;
+    unsigned char	value;
+    char	flags;
+    char       *text;
+};
+
+#define M_EQ 0	/* mask and return true if equal */
+#define M_NE 1	/* mask and return true if not equal */
+#define TRUE 2	/* don't read config, always true */
+
+static	char*	chipset_probe (pcici_t tag, pcidi_t type)
+{
+	switch (type) {
+	case 0x04848086:
+		return ("intel 82378IB pci-isa bridge");
+	case 0x04838086:
+		return ("intel 82424ZX cache dram controller");
+	case 0x04828086:
+		return ("intel 82375EB pci-eisa bridge");
+	case 0x04a38086:
+		return ("intel 82434LX pci cache memory controller");
+	};
+	return ((char*)0);
+}
+
+struct condmsg conf82424zx[] =
+{
+    { 0x00, 0x00, 0x00, TRUE, "\tCPU: " },
+    { 0x50, 0xe0, 0x00, M_EQ, "486DX" },
+    { 0x50, 0xe0, 0x20, M_EQ, "486SX" },
+    { 0x50, 0xe0, 0x40, M_EQ, "486DX2 or 486DX4" },
+    { 0x50, 0xe0, 0x80, M_EQ, "Overdrive (writeback)" },
+
+    { 0x00, 0x00, 0x00, TRUE, ", bus=" },
+    { 0x50, 0x03, 0x00, M_EQ, "25MHz" },
+    { 0x50, 0x03, 0x01, M_EQ, "33MHz" },
+    { 0x53, 0x01, 0x01, TRUE, ", CPU->Memory posting "},
+    { 0x53, 0x01, 0x00, M_EQ, "OFF" },
+    { 0x53, 0x01, 0x01, M_EQ, "ON" },
+
+    { 0x56, 0x30, 0x00, M_NE, "\n\tWarning:" },
+    { 0x56, 0x20, 0x00, M_NE, " NO cache parity!" },
+    { 0x56, 0x10, 0x00, M_NE, " NO DRAM parity!" },
+    { 0x55, 0x04, 0x04, M_EQ, "\n\tWarning: refresh OFF! " },
+
+    { 0x00, 0x00, 0x00, TRUE, "\n\tCache: " },
+    { 0x52, 0x01, 0x00, M_EQ, "None" },
+    { 0x52, 0xc1, 0x01, M_EQ, "64KB" },
+    { 0x52, 0xc1, 0x41, M_EQ, "128KB" },
+    { 0x52, 0xc1, 0x81, M_EQ, "256KB" },
+    { 0x52, 0xc1, 0xc1, M_EQ, "512KB" },
+    { 0x52, 0x03, 0x01, M_EQ, " writethrough" },
+    { 0x52, 0x03, 0x03, M_EQ, " writeback" },
+
+    { 0x52, 0x01, 0x01, M_EQ, ", cache clocks=" },
+    { 0x52, 0x05, 0x01, M_EQ, "3-1-1-1" },
+    { 0x52, 0x05, 0x05, M_EQ, "2-1-1-1" },
+
+    { 0x00, 0x00, 0x00, TRUE, "\n\tDRAM:" },
+    { 0x55, 0x43, 0x00, M_NE, " page mode" },
+    { 0x55, 0x02, 0x02, M_EQ, " code fetch" },
+    { 0x55, 0x43, 0x43, M_EQ, "," },
+    { 0x55, 0x43, 0x42, M_EQ, " and" },
+    { 0x55, 0x40, 0x40, M_EQ, " read" },
+    { 0x55, 0x03, 0x03, M_EQ, " and" },
+    { 0x55, 0x43, 0x41, M_EQ, " and" },
+    { 0x55, 0x01, 0x01, M_EQ, " write" },
+    { 0x55, 0x43, 0x00, M_NE, "," },
+
+    { 0x00, 0x00, 0x00, TRUE, " memory clocks=" },
+    { 0x55, 0x20, 0x00, M_EQ, "X-2-2-2" },
+    { 0x55, 0x20, 0x20, M_EQ, "X-1-2-1" },
+
+    { 0x00, 0x00, 0x00, TRUE, "\n\tPCI: CPU->PCI posting " },
+    { 0x53, 0x02, 0x02, M_EQ, "ON" },
+    { 0x53, 0x02, 0x00, M_EQ, "OFF" },
+    { 0x00, 0x00, 0x00, TRUE, ", CPU->PCI burst mode " },
+    { 0x54, 0x02, 0x02, M_EQ, "ON" },
+    { 0x54, 0x02, 0x00, M_EQ, "OFF" },
+    { 0x00, 0x00, 0x00, TRUE, ", PCI->Memory posting " },
+    { 0x54, 0x01, 0x01, M_EQ, "ON" },
+    { 0x54, 0x01, 0x00, M_EQ, "OFF" },
+
+    { 0x00, 0x00, 0x00, TRUE, "\n" },
+
+/* end marker */
+    { 0 }
+};
+
+struct condmsg conf82434lx[] =
+{
+    { 0x00, 0x00, 0x00, TRUE, "\tCPU: " },
+    { 0x50, 0xe0, 0x80, M_EQ, "Pentium" },
+    { 0x50, 0xe0, 0x80, M_NE, "???" },
+    { 0x50, 0x02, 0x00, M_EQ, ", ???MHz" },
+    { 0x50, 0x03, 0x02, M_EQ, ", 60MHz" },
+    { 0x50, 0x03, 0x03, M_EQ, ", 66MHz" },
+    { 0x50, 0x04, 0x00, M_EQ, " (primary cache OFF)" },
+
+    { 0x53, 0x01, 0x01, TRUE, ", CPU->Memory posting "},
+    { 0x53, 0x01, 0x00, M_EQ, "OFF" },
+    { 0x53, 0x01, 0x01, M_NE, "ON" },
+
+    { 0x53, 0x04, 0x00, M_NE, ", read around write"},
+
+    { 0x71, 0xc0, 0x00, M_NE, "\n\tWarning: NO cache parity!" },
+    { 0x57, 0x20, 0x00, M_NE, "\n\tWarning: NO DRAM parity!" },
+    { 0x55, 0x01, 0x01, M_EQ, "\n\tWarning: refresh OFF! " },
+
+    { 0x00, 0x00, 0x00, TRUE, "\n\tCache: " },
+    { 0x52, 0x01, 0x00, M_EQ, "None" },
+    { 0x52, 0x81, 0x01, M_EQ, "" },
+    { 0x52, 0xc1, 0x81, M_EQ, "256KB" },
+    { 0x52, 0xc1, 0xc1, M_EQ, "512KB" },
+    { 0x52, 0x03, 0x01, M_EQ, " writethrough" },
+    { 0x52, 0x03, 0x03, M_EQ, " writeback" },
+
+    { 0x52, 0x01, 0x01, M_EQ, ", cache clocks=" },
+    { 0x52, 0x20, 0x00, M_EQ, "3-2-2-2/4-2-2-2" },
+    { 0x52, 0x20, 0x00, M_NE, "3-1-1-1" },
+
+    { 0x00, 0x00, 0x00, TRUE, "\n\tDRAM:" },
+    { 0x57, 0x10, 0x00, M_EQ, " page mode" },
+
+    { 0x00, 0x00, 0x00, TRUE, " memory clocks=" },
+    { 0x57, 0xc0, 0x00, M_EQ, "X-4-4-4 (70ns)" },
+    { 0x57, 0xc0, 0x40, M_EQ, "X-4-4-4/X-3-3-3 (60ns)" },
+    { 0x57, 0xc0, 0x80, M_EQ, "???" },
+    { 0x57, 0xc0, 0xc0, M_EQ, "X-3-3-3 (50ns)" },
+
+    { 0x00, 0x00, 0x00, TRUE, "\n\tPCI: CPU->PCI posting " },
+    { 0x53, 0x02, 0x02, M_EQ, "ON" },
+    { 0x53, 0x02, 0x00, M_EQ, "OFF" },
+    { 0x00, 0x00, 0x00, TRUE, ", CPU->PCI burst mode " },
+    { 0x54, 0x02, 0x00, M_NE, "ON" },
+    { 0x54, 0x02, 0x00, M_EQ, "OFF" },
+    { 0x00, 0x00, 0x00, TRUE, ", PCI->Memory posting " },
+    { 0x54, 0x01, 0x00, M_NE, "ON" },
+    { 0x54, 0x01, 0x00, M_EQ, "OFF" },
+    { 0x54, 0x04, 0x00, TRUE, ", PCI clocks=" },
+    { 0x54, 0x04, 0x00, M_EQ, "2-2-2-2" },
+    { 0x54, 0x04, 0x00, M_NE, "2-1-1-1" },
+
+    { 0x00, 0x00, 0x00, TRUE, "\n" },
+
+/* end marker */
+    { 0 }
+};
+
+static char confread (pcici_t config_id, int port)
+{
+    unsigned long portw = port & ~3;
+    unsigned long ports = (port - portw) << 3;
+
+    unsigned long l = pci_conf_read (config_id, portw);
+    return (l >> ports);
+}
+
+static void writeconfig(pcici_t config_id, struct condmsg *tbl)
+{
+    while (tbl->text) {
+	int cond = 0;
+	if (tbl->flags == TRUE) {
+	    cond = 1;
+	} else {
+	    unsigned char v = (unsigned char) confread(config_id, tbl->port);
+	    switch (tbl->flags) {
+    case M_EQ:
+		if ((v & tbl->mask) == tbl->value) cond = 1;
+		break;
+    case M_NE:
+		if ((v & tbl->mask) != tbl->value) cond = 1;
+		break;
+	    }
+	}
+	if (cond) printf ("%s", tbl->text);
+	tbl++;
+    }
+}
+
+void chipset_attach(pcici_t config_id, int unit)
+{
+	switch (pci_conf_read (config_id, 0)) {
+
+	case 0x04838086:
+		writeconfig (config_id, conf82424zx);
+		break;
+	case 0x04a38086:
+		writeconfig (config_id, conf82434lx);
+		break;
+	case 0x04848086:
+	case 0x04828086:
+		printf ("\t[40] %lx [50] %lx [54] %lx\n",
+			pci_conf_read (config_id, 0x40),
+			pci_conf_read (config_id, 0x50),
+			pci_conf_read (config_id, 0x54));
+		break;
+	};
+}
+
+/*---------------------------------------------------------
+**
+**	Catchall driver for VGA devices
+**
+**
+**	By Garrett Wollman
+**	<wollman@halloran-eldar.lcs.mit.edu>
+**
+**---------------------------------------------------------
+*/
+
+static	char*	vga_probe (pcici_t tag, pcidi_t type);
+static	void	vga_attach(pcici_t tag, int unit);
+static	u_long	vga_count;
+
+struct	pci_driver vga_device = {
+	vga_probe,
+	vga_attach,
+	&vga_count
+};
+
+static	char*	vga_probe (pcici_t tag, pcidi_t type)
+{
+	int data = pci_conf_read(tag, PCI_CLASS_REG);
+
+	switch (data & PCI_CLASS_MASK) {
+
+	case PCI_CLASS_PREHISTORIC:
+		if ((data & PCI_SUBCLASS_MASK)
+			!= PCI_SUBCLASS_PREHISTORIC_VGA)
+			break;
+
+	case PCI_CLASS_DISPLAY:
+		return ("display device");
+	};
+	return ((char*)0);
+}
+
+static	void	vga_attach(pcici_t tag, int unit)
+{
+	vm_offset_t va;
+	vm_offset_t pa;
+	int reg;
+
+	for (reg = PCI_MAP_REG_START; reg < PCI_MAP_REG_END; reg += 4)
+		(void) pci_map_mem (tag, reg, &va, &pa);
+}
+
+/*---------------------------------------------------------
+**
+**	Hook for loadable pci drivers
+**
+**---------------------------------------------------------
+*/
+
+static	char*	lkm_probe (pcici_t tag, pcidi_t type);
+static	void	lkm_attach(pcici_t tag, int unit);
+static	u_long	lkm_count;
+
+struct	pci_driver lkm_device = {
+	lkm_probe,
+	lkm_attach,
+	&lkm_count
+};
+
+static	char*	lkm_probe (pcici_t tag, pcidi_t type)
+{
+	/*
+	**	Should try to load a matching driver.
+	**	XXX Not yet!
+	*/
+	return ((char*)0);
+}
+
+static	void	lkm_attach(pcici_t tag, int unit)
+{
+}
+
+/*---------------------------------------------------------
+**
+**	Devices to ignore
+**
+**---------------------------------------------------------
+*/
+
+static	char*	ign_probe (pcici_t tag, pcidi_t type);
+static	void	ign_attach(pcici_t tag, int unit);
+static	u_long	ign_count;
+
+struct	pci_driver ign_device = {
+	ign_probe,
+	ign_attach,
+	&ign_count
+};
+
+static	char*	ign_probe (pcici_t tag, pcidi_t type)
+{
+	switch (type) {
+
+	case 0x10001042ul:	/* wd */
+		return ("");
+
+	};
+	return ((char*)0);
+}
+
+static	void	ign_attach(pcici_t tag, int unit)
+{
+}