[src/trunk]: src/sys/dev/mca compute the shared memory location instead of ha...

[jdolecek <jdolecek%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/893eb934f26b
branches:  trunk
changeset: 569832:893eb934f26b
user:      jdolecek <jdolecek%NetBSD.org@localhost>
date:      Wed Sep 08 19:09:43 2004 +0000

description:
compute the shared memory location instead of hardcoding list of 'known'
pos3 values for 8013 variants; fixes attachment for some variants

patch provided in PR port-i386/26877 by Dave Barnes

diffstat:

 sys/dev/mca/if_we_mca.c |  68 ++++++++++++------------------------------------
 1 files changed, 17 insertions(+), 51 deletions(-)

diffs (129 lines):

diff -r 40b3a698a5fc -r 893eb934f26b sys/dev/mca/if_we_mca.c
--- a/sys/dev/mca/if_we_mca.c   Wed Sep 08 18:15:57 2004 +0000
+++ b/sys/dev/mca/if_we_mca.c   Wed Sep 08 19:09:43 2004 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_we_mca.c,v 1.10 2004/09/08 17:44:53 jdolecek Exp $  */
+/*     $NetBSD: if_we_mca.c,v 1.11 2004/09/08 19:09:43 jdolecek Exp $  */
 
 /*-
  * Copyright (c) 1997, 1998, 2001 The NetBSD Foundation, Inc.
@@ -60,7 +60,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_we_mca.c,v 1.10 2004/09/08 17:44:53 jdolecek Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_we_mca.c,v 1.11 2004/09/08 19:09:43 jdolecek Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -86,7 +86,6 @@
 
 #define WD_8003                0x01
 #define WD_ELITE       0x02
-#define WD_MEMSIZE     16384   /* all supported cards have 16K Bytes memory */
 
 int we_mca_probe __P((struct device *, struct cfdata *, void *));
 void we_mca_attach __P((struct device *, struct device *, void *));
@@ -111,9 +110,9 @@
        { MCA_PRODUCT_WD_8013WP, "EtherCard PLUS Elite 10T/A (8013WP/A)",
                WD_ELITE,       WE_TYPE_WD8013EP, "WD8013WP/A" },
        { MCA_PRODUCT_IBM_WD_2,"IBM PS/2 Adapter/A for Ethernet Networks (UTP)",
-               WD_ELITE, WE_TYPE_WD8013EP, "WD8013WP/A"}, /* XXX */
+               WD_ELITE, WE_TYPE_WD8013EP, "WD8013WP/A"},
        { MCA_PRODUCT_IBM_WD_T,"IBM PS/2 Adapter/A for Ethernet Networks (BNC)",
-               WD_ELITE, WE_TYPE_WD8013EP, "WD8013WP/A"}, /* XXX */
+               WD_ELITE, WE_TYPE_WD8013EP, "WD8013WP/A"},
        { MCA_PRODUCT_WD_8003E, "WD EtherCard PLUS/A (WD8003E/A or WD8003ET/A)",
                WD_8003,        WE_TYPE_WD8003E, "WD8003E/A or WD8003ET/A" },
        { MCA_PRODUCT_WD_8003ST,"WD StarCard PLUS/A (WD8003ST/A)",
@@ -121,7 +120,7 @@
        { MCA_PRODUCT_WD_8003W, "WD EtherCard PLUS 10T/A (WD8003W/A)",
                WD_8003,        WE_TYPE_WD8003W, "WD8003W/A" },
        { MCA_PRODUCT_IBM_WD_O, "IBM PS/2 Adapter/A for Ethernet Networks",
-               WD_8003,        WE_TYPE_WD8003W, "IBM PS/2 Adapter/A" },/*XXX*/
+               WD_8003,        WE_TYPE_WD8003W, "IBM PS/2 Adapter/A" },
        { 0x0000,                       NULL },
 };
 
@@ -130,32 +129,6 @@
        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 *
@@ -230,8 +203,14 @@
         *
         * 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
@@ -254,27 +233,14 @@
                iobase = 0x200 + (((pos2 & 0x0e) >> 1) * 0x020);
                maddr  = 0xC0000 + (((pos3 & 0x1c) >> 2) * 0x04000);
                irq = we_mca_irq[(pos5 & 0x03)];
-               sc->mem_size = WD_MEMSIZE;
+               sc->mem_size = 16384;
        } else {
                /* SMC Elite */
-               int i, id;
-
                iobase = 0x800 + (((pos2 & 0xf0) >> 4) * 0x1000);
+               maddr = 0xC0000 + ((pos3 & 0x0f) * 0x2000)
+                   + ((pos3 & 0x80) ? 0xF00000 : 0);
                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 = we_mca_elite_mem[i].maddr;
-               sc->mem_size = we_mca_elite_mem[i].memsize;
+               sc->mem_size = (pos3 & 0x10) ? 16384 : 8192;
        }
 
        nict = asict = ma->ma_iot;