[PATCH] sc-ip22.c cleanup

To:	linux-mips@linux-mips.org
Subject:	[PATCH] sc-ip22.c cleanup
From:	Ladislav Michl <ladis@linux-mips.org>
Date:	Wed, 7 May 2003 22:22:29 +0200
Cc:	Ralf Baechle <ralf@linux-mips.org>
Original-recipient:	rfc822;linux-mips@linux-mips.org
Sender:	linux-mips-bounce@linux-mips.org
User-agent:	Mutt/1.3.28i

use serial eeprom access functions to detect scache size


diff -Naur linux_2_4/arch/mips/mm/sc-ip22.c 
linux_2_4-fucked/arch/mips/mm/sc-ip22.c
--- linux_2_4/arch/mips/mm/sc-ip22.c    Thu Apr 17 02:29:14 2003
+++ linux_2_4-fucked/arch/mips/mm/sc-ip22.c     Wed May  7 20:10:22 2003
@@ -14,9 +14,7 @@
 #include <asm/pgtable.h>
 #include <asm/system.h>
 #include <asm/bootinfo.h>
-#include <asm/mmu_context.h>
-#include <asm/sgialib.h>
-#include <asm/sgi/sgi.h>
+#include <asm/sgi/ip22.h>
 #include <asm/sgi/mc.h>
 
 /* Secondary cache size in bytes, if present.  */
@@ -149,60 +147,14 @@
 
 static inline int __init indy_sc_probe(void)
 {
-       volatile unsigned int *cpu_control;
-       unsigned short cmd = 0xc220;
-       unsigned long data = 0;
-       int i, n;
-
-#ifdef __MIPSEB__
-       cpu_control = (volatile unsigned int *) KSEG1ADDR(0x1fa00034);
-#else
-       cpu_control = (volatile unsigned int *) KSEG1ADDR(0x1fa00030);
-#endif
-#define DEASSERT(bit) (*(cpu_control) &= (~(bit)))
-#define ASSERT(bit) (*(cpu_control) |= (bit))
-#define DELAY  for(n = 0; n < 100000; n++) __asm__ __volatile__("")
-       DEASSERT(SGIMC_EEPROM_PRE);
-       DEASSERT(SGIMC_EEPROM_SDATAO);
-       DEASSERT(SGIMC_EEPROM_SECLOCK);
-       DEASSERT(SGIMC_EEPROM_PRE);
-       DELAY;
-       ASSERT(SGIMC_EEPROM_CSEL); ASSERT(SGIMC_EEPROM_SECLOCK);
-       for(i = 0; i < 11; i++) {
-               if(cmd & (1<<15))
-                       ASSERT(SGIMC_EEPROM_SDATAO);
-               else
-                       DEASSERT(SGIMC_EEPROM_SDATAO);
-               DEASSERT(SGIMC_EEPROM_SECLOCK);
-               ASSERT(SGIMC_EEPROM_SECLOCK);
-               cmd <<= 1;
-       }
-       DEASSERT(SGIMC_EEPROM_SDATAO);
-       for(i = 0; i < (sizeof(unsigned short) * 8); i++) {
-               unsigned int tmp;
-
-               DEASSERT(SGIMC_EEPROM_SECLOCK);
-               DELAY;
-               ASSERT(SGIMC_EEPROM_SECLOCK);
-               DELAY;
-               data <<= 1;
-               tmp = *cpu_control;
-               if(tmp & SGIMC_EEPROM_SDATAI)
-                       data |= 1;
-       }
-       DEASSERT(SGIMC_EEPROM_SECLOCK);
-       DEASSERT(SGIMC_EEPROM_CSEL);
-       ASSERT(SGIMC_EEPROM_PRE);
-       ASSERT(SGIMC_EEPROM_SECLOCK);
-
-       data <<= PAGE_SHIFT;
-       if (data == 0)
+       unsigned long size = ip22_eeprom_read(&sgimc->eeprom, 17);
+       size <<= PAGE_SHIFT;
+       if (size == 0)
                return 0;
 
-       scache_size = data;
-
        printk(KERN_INFO "R4600/R5000 SCACHE size %ldK, linesize 32 bytes.\n",
-              scache_size >> 10);
+              size >> 10);
+       scache_size = size;
 
        return 1;
 }
diff -Naur linux_2_4/arch/mips/mm/sc-ip22.c 
linux_2_4-fucked/arch/mips/mm/sc-ip22.c
--- linux_2_4/arch/mips/mm/sc-ip22.c    Thu Apr 17 02:29:14 2003
+++ linux_2_4-fucked/arch/mips/mm/sc-ip22.c     Wed May  7 20:10:22 2003
@@ -14,9 +14,7 @@
 #include <asm/pgtable.h>
 #include <asm/system.h>
 #include <asm/bootinfo.h>
-#include <asm/mmu_context.h>
-#include <asm/sgialib.h>
-#include <asm/sgi/sgi.h>
+#include <asm/sgi/ip22.h>
 #include <asm/sgi/mc.h>
 
 /* Secondary cache size in bytes, if present.  */
@@ -149,60 +147,14 @@
 
 static inline int __init indy_sc_probe(void)
 {
-       volatile unsigned int *cpu_control;
-       unsigned short cmd = 0xc220;
-       unsigned long data = 0;
-       int i, n;
-
-#ifdef __MIPSEB__
-       cpu_control = (volatile unsigned int *) KSEG1ADDR(0x1fa00034);
-#else
-       cpu_control = (volatile unsigned int *) KSEG1ADDR(0x1fa00030);
-#endif
-#define DEASSERT(bit) (*(cpu_control) &= (~(bit)))
-#define ASSERT(bit) (*(cpu_control) |= (bit))
-#define DELAY  for(n = 0; n < 100000; n++) __asm__ __volatile__("")
-       DEASSERT(SGIMC_EEPROM_PRE);
-       DEASSERT(SGIMC_EEPROM_SDATAO);
-       DEASSERT(SGIMC_EEPROM_SECLOCK);
-       DEASSERT(SGIMC_EEPROM_PRE);
-       DELAY;
-       ASSERT(SGIMC_EEPROM_CSEL); ASSERT(SGIMC_EEPROM_SECLOCK);
-       for(i = 0; i < 11; i++) {
-               if(cmd & (1<<15))
-                       ASSERT(SGIMC_EEPROM_SDATAO);
-               else
-                       DEASSERT(SGIMC_EEPROM_SDATAO);
-               DEASSERT(SGIMC_EEPROM_SECLOCK);
-               ASSERT(SGIMC_EEPROM_SECLOCK);
-               cmd <<= 1;
-       }
-       DEASSERT(SGIMC_EEPROM_SDATAO);
-       for(i = 0; i < (sizeof(unsigned short) * 8); i++) {
-               unsigned int tmp;
-
-               DEASSERT(SGIMC_EEPROM_SECLOCK);
-               DELAY;
-               ASSERT(SGIMC_EEPROM_SECLOCK);
-               DELAY;
-               data <<= 1;
-               tmp = *cpu_control;
-               if(tmp & SGIMC_EEPROM_SDATAI)
-                       data |= 1;
-       }
-       DEASSERT(SGIMC_EEPROM_SECLOCK);
-       DEASSERT(SGIMC_EEPROM_CSEL);
-       ASSERT(SGIMC_EEPROM_PRE);
-       ASSERT(SGIMC_EEPROM_SECLOCK);
-
-       data <<= PAGE_SHIFT;
-       if (data == 0)
+       unsigned long size = ip22_eeprom_read(&sgimc->eeprom, 17);
+       size <<= PAGE_SHIFT;
+       if (size == 0)
                return 0;
 
-       scache_size = data;
-
        printk(KERN_INFO "R4600/R5000 SCACHE size %ldK, linesize 32 bytes.\n",
-              scache_size >> 10);
+              size >> 10);
+       scache_size = size;
 
        return 1;
 }

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