58 lines
1.7 KiB
Diff
58 lines
1.7 KiB
Diff
From bda508f975d1372568a4fc9862be501a6176fd46 Mon Sep 17 00:00:00 2001
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From: Jonas Gorski <jogo@openwrt.org>
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Date: Sat, 12 May 2012 23:04:17 +0200
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Subject: [PATCH v2 2/3] MIPS: BCM63XX: export PSI size from nvram
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Signed-off-by: Jonas Gorski <jogo@openwrt.org>
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---
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arch/mips/bcm63xx/nvram.c | 13 +++++++++++++
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arch/mips/include/asm/mach-bcm63xx/bcm63xx_nvram.h | 7 +++++++
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2 files changed, 20 insertions(+)
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--- a/arch/mips/bcm63xx/nvram.c
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+++ b/arch/mips/bcm63xx/nvram.c
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@@ -15,6 +15,7 @@
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#include <linux/export.h>
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#include <linux/kernel.h>
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#include <linux/if_ether.h>
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+#include <linux/sizes.h>
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#include <bcm63xx_nvram.h>
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@@ -35,6 +36,8 @@ struct bcm963xx_nvram {
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u32 checksum_high;
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};
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+#define BCM63XX_DEFAULT_PSI_SIZE SZ_64K
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+
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static struct bcm963xx_nvram nvram;
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static int mac_addr_used;
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@@ -104,3 +107,13 @@ int bcm63xx_nvram_get_mac_address(u8 *ma
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return 0;
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}
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EXPORT_SYMBOL(bcm63xx_nvram_get_mac_address);
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+
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+unsigned int bcm63xx_nvram_get_psi_size(void)
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+{
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+ /* max is 64k, but some vendors use higher values */
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+ if (nvram.psi_size > 0 && nvram.psi_size <= 512)
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+ return nvram.psi_size * SZ_1K;
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+
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+ return BCM63XX_DEFAULT_PSI_SIZE;
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+}
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+EXPORT_SYMBOL(bcm63xx_nvram_get_psi_size);
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--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_nvram.h
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+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_nvram.h
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@@ -30,4 +30,11 @@ u8 *bcm63xx_nvram_get_name(void);
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*/
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int bcm63xx_nvram_get_mac_address(u8 *mac);
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+/**
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+ * bcm63xx_nvram_get_psi_size() - returns the size of the PSI area
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+ *
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+ * Returns the size of the Persitent Storage Information area in bytes.
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+ */
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+unsigned int bcm63xx_nvram_get_psi_size(void);
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+
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#endif /* BCM63XX_NVRAM_H */
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