>Number:         26877
>Category:       port-i386
>Synopsis:       i386 PS/2 MCA: we can't find shared ram address for 8013
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Sep 07 19:38:00 UTC 2004
>Closed-Date:
>Last-Modified:
>Originator:     Dave Barnes
>Release:        2.0_BETA
>Organization:
>Environment:
IBM PS/2 mod 50z with Reply PowerBoard Upgrade
NetBSD 2.0_BETA Sept 5 snapshot from releng.netbsd.org
>Description:
Some shared ram address combinations for the Elite Plus wd8013 series  and IBM PS/2 Adapter/A Ethernet cards are not set correctly.  Some combinations result in error message....


>How-To-Repeat:
Test Case: wd8013 set to 0xd000 and 8k of shared ram -
NetBSD 2.0_BETA (2004/08/16 DJB.ps2:2.0_BETA) #3: Mon Sep  6 16:30:12 CDT 2004
	root@PapaJohn:/usr/src/sys/arch/i386/compile/DJB
total memory = 32380 KB
avail memory = 30136 KB
mainbus0 (root)
cpu0 at mainbus0: (uniprocessor)
cpu0: AMD Am5x86 W/T 133/160 (486-class), id 0x4e4
cpu0: features 1<FPU>
mca0 at mainbus0
tra0 at mca0 slot 1 ports 0x1200-0x1220 irq 9: Tiara LANCard/E2
tra0: Ethernet address 08:00:1a:02:81:ed
we0 at mca0
we0: cannot find Shared Ram Base Address
>Fix:
--- dev/mca/if_we_mca.c.orig	2004-09-07 14:18:21.000000000 -0500
+++ dev/mca/if_we_mca.c	2004-09-07 14:18:44.000000000 -0500
@@ -130,33 +130,6 @@
 	3, 4, 10, 15,
 };
 
-/* memory position and shared RAM sizes for WD8013-type of cards */
-static const struct {
-	u_int8_t id;
-	int maddr;
-	int memsize;
-} we_mca_elite_mem[] = {
-	{ 0x10,	0x0C0000, 16384 },
-	{ 0x12,	0x0C4000, 16384 },
-	{ 0x14,	0x0C8000, 16384 },
-	{ 0x16,	0x0CC000, 16384 },
-	{ 0x18,	0x0D0000, 16384 },
-	{ 0x1A,	0x0D4000, 16384 },
-	{ 0x1C,	0x0D8000, 16384 },
-	{ 0x1E,	0x0DC000, 16384 },
-	{ 0x90,	0xFC0000, 16384 },
-	{ 0x94,	0xFC8000, 16384 },
-	{ 0x98,	0xFD0000, 16384 },
-	{ 0x9A, 0xFD8000, 16384 },
-	{ 0x9C,	0x0C0000, 16384 },
-	{ 0x00,	0x0C0000, 8192 },
-	{ 0x01,	0x0C2000, 8192 },
-	{ 0x02,	0x0C4000, 8192 },
-	{ 0x03,	0x0C6000, 8192 },
-	{ 0, 0, 0 },
-};
-
-
 static const struct we_mca_product *we_mca_lookup __P((int));
 
 static const struct we_mca_product *
@@ -229,10 +202,17 @@
 	 * \____/        \__ enable: 0=adapter disabled, 1=adapter enabled
 	 *      \___________ Adapter I/O Space: 0x0800-0x081F + XX * 0x1000
 	 *
+	 *
 	 * 8013: POS register 3: (adf pos1)
 	 * 7 6 5 4 3 2 1 0
-	 *   X 0             Shared Ram Base Address - mask 0x9f
-	 *                     see wd_elite_mem[] array for details
+	 * | X 0 | \_____/
+	 * |	 |	     \_____ Shared Ram Base Address
+	 * |     |                0xc0000 + ((xx & 0x0f) * 0x2000)
+	 * |      \____________ Ram size: 0 = 8k, 1 = 16k
+	 * |                      some size and address combinations are
+	 * |                        not supported, varies by card :(
+	 *  \__________________ If set, add 0xf00000 to shared RAM base addr
+	 *							puts shared RAM near top of 16MB address space
 	 *
 	 * 8013: POS register 5: (adf pos3)
 	 * 7 6 5 4 3 2 1 0
@@ -258,24 +238,14 @@
 		sc->mem_size = WD_MEMSIZE;
 	} else {
 		/* SMC Elite */
-		int i, id;
 
 		iobase = 0x800 + (((pos2 & 0xf0) >> 4) * 0x1000);
 		irq = we_mca_irq[(pos5 & 0x0c) >> 2];
 
 		/* find location of shared mem and it's size */
-		id = (pos3 & 0x9f);
-		for(i=0; we_mca_elite_mem[i].maddr; i++)
-			if (we_mca_elite_mem[i].id == id)
-				break;
-		if (we_mca_elite_mem[i].maddr == 0) {
-			printf("\n%s: cannot find Shared Ram Base Address\n",
-				sc->sc_dev.dv_xname);
-			return;
-		}
+		maddr = 0xc0000 + ((pos3 & 0x0f) * 0x2000) + ((pos3 & 0x80) ? 0xf00000 : 0);
+		sc->mem_size = ((pos3 & 0x10) ? 16384 : 8192);
 
-		maddr = we_mca_elite_mem[i].maddr;
-		sc->mem_size = we_mca_elite_mem[i].memsize;
 	}
 
 	nict = asict = ma->ma_iot;


=====================================================================
Dmesg for test case after above patch:
NetBSD 2.0_BETA (2004/08/16 DJB.ps2:2.0_BETA) #7: Mon Sep  6 21:01:05 CDT 2004
	root@PapaJohn:/usr/src/sys/arch/i386/compile/DJB
total memory = 32380 KB
avail memory = 30136 KB
mainbus0 (root)
cpu0 at mainbus0: (uniprocessor)
cpu0: AMD Am5x86 W/T 133/160 (486-class), id 0x4e4
cpu0: features 1<FPU>
mca0 at mainbus0
tra0 at mca0 slot 1 ports 0x1200-0x1220 irq 9: Tiara LANCard/E2
tra0: Ethernet address 08:00:1a:02:81:ed
we0 at mca0 slot 3 port 0x800-0x81f mem 0xd0000-0xd1fff irq 3: EtherCard PLUS Elite/A (8013EP/A)
we0: WD8013EP/A Ethernet (16-bit)
we0: Ethernet address 00:00:c0:fb:dd:09
>Release-Note:
>Audit-Trail:
>Unformatted: