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Commit 092a5fc9 authored by Yaniv Rosner's avatar Yaniv Rosner Committed by David S. Miller
Browse files

bnx2x: recognize fan failure 



If fan failure is detected, MCP prevents PCI I/O registers from being
mapped to the bar, causing a fatal error as driver is unaware.

This patch recognizes such an event occurred and gracefully terminates
the probe process.

Signed-off-by: default avatarYaniv Rosner <yaniv.rosner@broadcom.com>
Signed-off-by: default avatarYuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: default avatarEilon Greenstein <eilong@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 64e9a9b8

drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c

+8 −0
Original line number Diff line number Diff line
@@ -11570,6 +11570,14 @@ static int __devinit bnx2x_init_dev(struct pci_dev *pdev, 
		goto err_out_disable;

	}



	pci_read_config_dword(pdev, PCICFG_REVISION_ID_OFFSET, &pci_cfg_dword);

	if ((pci_cfg_dword & PCICFG_REVESION_ID_MASK) ==

	    PCICFG_REVESION_ID_ERROR_VAL) {

		pr_err("PCI device error, probably due to fan failure, aborting\n");

		rc = -ENODEV;

		goto err_out_disable;

	}



	if (atomic_read(&pdev->enable_cnt) == 1) {

		rc = pci_request_regions(pdev, DRV_MODULE_NAME);

		if (rc) {

drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h

+3 −1
Original line number Diff line number Diff line
@@ -6160,7 +6160,9 @@ 
#define PCICFG_COMMAND_INT_DISABLE		(1<<10)

#define PCICFG_COMMAND_RESERVED 		(0x1f<<11)

#define PCICFG_STATUS_OFFSET				0x06

#define PCICFG_REVESION_ID_OFFSET			0x08

#define PCICFG_REVISION_ID_OFFSET			0x08

#define PCICFG_REVESION_ID_MASK			0xff

#define PCICFG_REVESION_ID_ERROR_VAL		0xff

#define PCICFG_CACHE_LINE_SIZE				0x0c

#define PCICFG_LATENCY_TIMER				0x0d

#define PCICFG_BAR_1_LOW				0x10