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| author | Bob Liu <lliubbo@gmail.com> | 2012-05-16 18:18:27 +0800 |
|---|---|---|
| committer | Bob Liu <lliubbo@gmail.com> | 2012-05-21 14:54:23 +0800 |
| commit | b2cfc653a513f347114c85ed8e75456ea0159c18 (patch) | |
| tree | 4c87b8c5ef7755882bf9034a6300199956e2d999 /arch/blackfin/mm | |
| parent | c55c89e939f2a0a83d5c61462be554d5d2408178 (diff) | |
| download | linux-b2cfc653a513f347114c85ed8e75456ea0159c18.tar.bz2 | |
blackfin: bf60x: add l2 ecc irq handler
bf60x support l2 hardware ecc error check, add panic when double bits ecc error
happened.
Signed-off-by: Bob Liu <lliubbo@gmail.com>
Diffstat (limited to 'arch/blackfin/mm')
| -rw-r--r-- | arch/blackfin/mm/sram-alloc.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/blackfin/mm/sram-alloc.c b/arch/blackfin/mm/sram-alloc.c index 29d98faa1efd..342e378da1ec 100644 --- a/arch/blackfin/mm/sram-alloc.c +++ b/arch/blackfin/mm/sram-alloc.c @@ -186,9 +186,45 @@ static void __init l1_inst_sram_init(void) #endif } +#ifdef __ADSPBF60x__ +static irqreturn_t l2_ecc_err(int irq, void *dev_id) +{ + int status; + + printk(KERN_ERR "L2 ecc error happend\n"); + status = bfin_read32(L2CTL0_STAT); + if (status & 0x1) + printk(KERN_ERR "Core channel error type:0x%x, addr:0x%x\n", + bfin_read32(L2CTL0_ET0), bfin_read32(L2CTL0_EADDR0)); + if (status & 0x2) + printk(KERN_ERR "System channel error type:0x%x, addr:0x%x\n", + bfin_read32(L2CTL0_ET1), bfin_read32(L2CTL0_EADDR1)); + + status = status >> 8; + if (status) + printk(KERN_ERR "L2 Bank%d error, addr:0x%x\n", + status, bfin_read32(L2CTL0_ERRADDR0 + status)); + + panic("L2 Ecc error"); + return IRQ_HANDLED; +} +#endif + static void __init l2_sram_init(void) { #if L2_LENGTH != 0 + +#ifdef __ADSPBF60x__ + int ret; + + ret = request_irq(IRQ_L2CTL0_ECC_ERR, l2_ecc_err, 0, "l2-ecc-err", + NULL); + if (unlikely(ret < 0)) { + printk(KERN_INFO "Fail to request l2 ecc error interrupt"); + return; + } +#endif + free_l2_sram_head.next = kmem_cache_alloc(sram_piece_cache, GFP_KERNEL); if (!free_l2_sram_head.next) { |