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RDMA/nes: Limit critical error interrupts

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Mask off a critical error after 100 critical error interrupts to
keep the system "sane".

Signed-off-by: Sweta Bhatt <sweta.bhatt@einfochips.com>
Signed-off-by: Chien Tung <ctung@neteffect.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Chien Tung 2008-09-26 15:08:10 -05:00 committed by Roland Dreier
parent 068e80de6a
commit 9d156947c7
2 changed files with 28 additions and 11 deletions
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38
drivers/infiniband/hw/nes/nes_hw.c
View file

@ -55,7 +55,7 @@ u32 int_mod_cq_depth_24;
u32 int_mod_cq_depth_16;
u32 int_mod_cq_depth_4;
u32 int_mod_cq_depth_1;
static const u8 nes_max_critical_error_count = 100;
#include "nes_cm.h"
static void nes_cqp_ce_handler(struct nes_device *nesdev, struct nes_hw_cq *cq);
@ -67,6 +67,7 @@ static void nes_process_aeq(struct nes_device *nesdev, struct nes_hw_aeq *aeq);
static void nes_process_ceq(struct nes_device *nesdev, struct nes_hw_ceq *ceq);
static void nes_process_iwarp_aeqe(struct nes_device *nesdev,
struct nes_hw_aeqe *aeqe);
static void process_critical_error(struct nes_device *nesdev);
static void nes_process_mac_intr(struct nes_device *nesdev, u32 mac_number);
static unsigned int nes_reset_adapter_ne020(struct nes_device *nesdev, u8 *OneG_Mode);
@ -1352,7 +1353,7 @@ int nes_init_phy(struct nes_device *nesdev)
nes_write_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 0x1, 0xc319, 0x0008);
nes_write_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 0x1, 0xc31a, 0x0098);
nes_write_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 0x3, 0x0026, 0x0E00);
nes_write_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 0x3, 0x0027, 0x0000);
nes_write_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 0x3, 0x0027, 0x0001);
nes_write_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 0x3, 0x0028, 0xA528);
/*
@ -1991,7 +1992,30 @@ int nes_napi_isr(struct nes_device *nesdev)
}
}
static void process_critical_error(struct nes_device *nesdev)
{
u32 debug_error;
u32 nes_idx_debug_error_masks0 = 0;
u16 error_module = 0;
debug_error = nes_read_indexed(nesdev, NES_IDX_DEBUG_ERROR_CONTROL_STATUS);
printk(KERN_ERR PFX "Critical Error reported by device!!! 0x%02X\n",
(u16)debug_error);
nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_CONTROL_STATUS,
0x01010000 | (debug_error & 0x0000ffff));
if (crit_err_count++ > 10)
nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 1 << 0x17);
error_module = (u16) (debug_error & 0x0F00) >> 8;
if (++nesdev->nesadapter->crit_error_count[error_module-1] >=
nes_max_critical_error_count) {
printk(KERN_ERR PFX "Masking off critical error for module "
"0x%02X\n", (u16)error_module);
nes_idx_debug_error_masks0 = nes_read_indexed(nesdev,
NES_IDX_DEBUG_ERROR_MASKS0);
nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0,
nes_idx_debug_error_masks0 | (1 << error_module));
}
}
/**
* nes_dpc
*/
@ -2006,7 +2030,6 @@ void nes_dpc(unsigned long param)
u32 timer_stat;
u32 temp_int_stat;
u32 intf_int_stat;
u32 debug_error;
u32 processed_intf_int = 0;
u16 processed_timer_int = 0;
u16 completion_ints = 0;
@ -2084,14 +2107,7 @@ void nes_dpc(unsigned long param)
intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT);
intf_int_stat &= nesdev->intf_int_req;
if (NES_INTF_INT_CRITERR & intf_int_stat) {
debug_error = nes_read_indexed(nesdev, NES_IDX_DEBUG_ERROR_CONTROL_STATUS);
printk(KERN_ERR PFX "Critical Error reported by device!!! 0x%02X\n",
(u16)debug_error);
nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_CONTROL_STATUS,
0x01010000 | (debug_error & 0x0000ffff));
/* BUG(); */
if (crit_err_count++ > 10)
nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 1 << 0x17);
process_critical_error(nesdev);
}
if (NES_INTF_INT_PCIERR & intf_int_stat) {
printk(KERN_ERR PFX "PCI Error reported by device!!!\n");

1
drivers/infiniband/hw/nes/nes_hw.h
View file

@ -1096,6 +1096,7 @@ struct nes_adapter {
u16 pd_config_base[4];
u16 link_interrupt_count[4];
u8 crit_error_count[32];
/* the phy index for each port */
u8 phy_index[4];