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Commit b2cfc653 authored by Bob Liu's avatar Bob Liu
Browse files

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: default avatarBob Liu <lliubbo@gmail.com>
parent c55c89e9

arch/blackfin/mm/sram-alloc.c

+36 −0
Original line number Diff line number Diff line
@@ -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) {