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Commit d2db9eea authored by Jan-Bernd Themann's avatar Jan-Bernd Themann Committed by Jeff Garzik
Browse files

ehea: Fixed error recovery 



Error recovery for QP errors: Reset QPs and dump error information

Signed-off-by: default avatarJan-Bernd Themann <themann@de.ibm.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent eaefd5fb

drivers/net/ehea/ehea.h

+1 −1
Original line number Diff line number Diff line
@@ -39,7 +39,7 @@ 
#include <asm/io.h>



#define DRV_NAME	"ehea"

#define DRV_VERSION	"EHEA_0045"

#define DRV_VERSION	"EHEA_0046"



#define EHEA_MSG_DEFAULT (NETIF_MSG_LINK | NETIF_MSG_TIMER \

	| NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)

drivers/net/ehea/ehea_main.c

+7 −1
Original line number Diff line number Diff line
@@ -555,6 +555,7 @@ static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param) 
{

	struct ehea_port *port = param;

	struct ehea_eqe *eqe;

	struct ehea_qp *qp;

	u32 qp_token;



	eqe = ehea_poll_eq(port->qp_eq);
@@ -563,9 +564,14 @@ static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param) 
		qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);

		ehea_error("QP aff_err: entry=0x%lx, token=0x%x",

			   eqe->entry, qp_token);



		qp = port->port_res[qp_token].qp;

		ehea_error_data(port->adapter, qp->fw_handle);

		eqe = ehea_poll_eq(port->qp_eq);

	}



	queue_work(port->adapter->ehea_wq, &port->reset_task);



	return IRQ_HANDLED;

}

drivers/net/ehea/ehea_phyp.c

+10 −0
Original line number Diff line number Diff line
@@ -612,3 +612,13 @@ u64 ehea_h_reset_events(const u64 adapter_handle, const u64 neq_handle, 
				       event_mask,		/* R6 */

				       0, 0, 0, 0);		/* R7-R12 */

}



u64 ehea_h_error_data(const u64 adapter_handle, const u64 ressource_handle,

		      void *rblock)

{

	return ehea_plpar_hcall_norets(H_ERROR_DATA,

				       adapter_handle,          /* R4 */

				       ressource_handle,        /* R5 */

				       virt_to_abs(rblock),     /* R6 */

				       0, 0, 0, 0);             /* R7-R12 */

}

drivers/net/ehea/ehea_phyp.h

+3 −0
Original line number Diff line number Diff line
@@ -454,4 +454,7 @@ u64 ehea_h_reg_dereg_bcmc(const u64 adapter_handle, const u16 port_num, 
u64 ehea_h_reset_events(const u64 adapter_handle, const u64 neq_handle,

			const u64 event_mask);



u64 ehea_h_error_data(const u64 adapter_handle, const u64 ressource_handle,

		      void *rblock);



#endif	/* __EHEA_PHYP_H__ */

drivers/net/ehea/ehea_qmr.c

+42 −0
Original line number Diff line number Diff line
@@ -486,6 +486,7 @@ int ehea_destroy_qp(struct ehea_qp *qp) 
	if (!qp)

		return 0;



	ehea_h_disable_and_get_hea(qp->adapter->handle, qp->fw_handle);

	hret = ehea_h_free_resource(qp->adapter->handle, qp->fw_handle);

	if (hret != H_SUCCESS) {

		ehea_error("destroy_qp failed");
@@ -581,4 +582,45 @@ out: 
	return ret;

}



void print_error_data(u64 *data)

{

	int length;

	u64 type = EHEA_BMASK_GET(ERROR_DATA_TYPE, data[2]);

	u64 resource = data[1];



	length = EHEA_BMASK_GET(ERROR_DATA_LENGTH, data[0]);



	if (length > EHEA_PAGESIZE)

		length = EHEA_PAGESIZE;



	if (type == 0x8) /* Queue Pair */

		ehea_error("QP (resource=%lX) state: AER=0x%lX, AERR=0x%lX, "

			   "port=%lX", resource, data[6], data[12], data[22]);



	ehea_dump(data, length, "error data");

}



void ehea_error_data(struct ehea_adapter *adapter, u64 res_handle)

{

	unsigned long ret;

	u64 *rblock;



	rblock = kzalloc(PAGE_SIZE, GFP_KERNEL);

	if (!rblock) {

		ehea_error("Cannot allocate rblock memory.");

		return;

	}



	ret = ehea_h_error_data(adapter->handle,

				res_handle,

				rblock);



	if (ret == H_R_STATE)

		ehea_error("No error data is available: %lX.", res_handle);

	else if (ret == H_SUCCESS)

		print_error_data(rblock);

	else

		ehea_error("Error data could not be fetched: %lX", res_handle);



	kfree(rblock);

}