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Commit 3d77d840 authored by Raghava Aditya Renukunta's avatar Raghava Aditya Renukunta Committed by Martin K. Petersen
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scsi: aacraid: Added support for periodic wellness sync 



This patch adds a new functions that periodically sync the time of host
to the adapter. In addition also informs the adapter that the driver is
alive and kicking. Only applicable to the HBA1000 and SMARTIOC2000.

Signed-off-by: default avatarRaghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: default avatarDave Carroll <David.Carroll@microsemi.com>
Reviewed-by: default avatarJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 113156bc

drivers/scsi/aacraid/aacraid.h

+3 −0
Original line number Diff line number Diff line
@@ -88,6 +88,9 @@ enum { 
#define AAC_MAX_NATIVE_SIZE		2048



#define CISS_REPORT_PHYSICAL_LUNS	0xc3

#define WRITE_HOST_WELLNESS		0xa5

#define BMIC_IN			0x26

#define BMIC_OUT			0x27



struct aac_ciss_phys_luns_resp {

	u8	list_length[4];		/* LUN list length (N-7, big endian) */

drivers/scsi/aacraid/commsup.c

+148 −31
Original line number Diff line number Diff line
@@ -43,6 +43,7 @@ 
#include <linux/kthread.h>

#include <linux/interrupt.h>

#include <linux/semaphore.h>

#include <linux/bcd.h>

#include <scsi/scsi.h>

#include <scsi/scsi_host.h>

#include <scsi/scsi_device.h>
@@ -2003,6 +2004,142 @@ static void aac_process_events(struct aac_dev *dev) 
	spin_unlock_irqrestore(t_lock, flags);

}



static int aac_send_wellness_command(struct aac_dev *dev, char *wellness_str,

							u32 datasize)

{

	struct aac_srb *srbcmd;

	struct sgmap64 *sg64;

	dma_addr_t addr;

	char *dma_buf;

	struct fib *fibptr;

	int ret = -ENOMEM;

	u32 vbus, vid;



	fibptr = aac_fib_alloc(dev);

	if (!fibptr)

		goto out;



	dma_buf = pci_alloc_consistent(dev->pdev, datasize, &addr);

	if (!dma_buf)

		goto fib_free_out;



	aac_fib_init(fibptr);



	vbus = (u32)le16_to_cpu(dev->supplement_adapter_info.VirtDeviceBus);

	vid = (u32)le16_to_cpu(dev->supplement_adapter_info.VirtDeviceTarget);



	srbcmd = (struct aac_srb *)fib_data(fibptr);



	srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi);

	srbcmd->channel = cpu_to_le32(vbus);

	srbcmd->id = cpu_to_le32(vid);

	srbcmd->lun = 0;

	srbcmd->flags = cpu_to_le32(SRB_DataOut);

	srbcmd->timeout = cpu_to_le32(10);

	srbcmd->retry_limit = 0;

	srbcmd->cdb_size = cpu_to_le32(12);

	srbcmd->count = cpu_to_le32(datasize);



	memset(srbcmd->cdb, 0, sizeof(srbcmd->cdb));

	srbcmd->cdb[0] = BMIC_OUT;

	srbcmd->cdb[6] = WRITE_HOST_WELLNESS;

	memcpy(dma_buf, (char *)wellness_str, datasize);



	sg64 = (struct sgmap64 *)&srbcmd->sg;

	sg64->count = cpu_to_le32(1);

	sg64->sg[0].addr[1] = cpu_to_le32((u32)(((addr) >> 16) >> 16));

	sg64->sg[0].addr[0] = cpu_to_le32((u32)(addr & 0xffffffff));

	sg64->sg[0].count = cpu_to_le32(datasize);



	ret = aac_fib_send(ScsiPortCommand64, fibptr, sizeof(struct aac_srb),

				FsaNormal, 1, 1, NULL, NULL);



	pci_free_consistent(dev->pdev, datasize, (void *)dma_buf, addr);



	/*

	 * Do not set XferState to zero unless

	 * receives a response from F/W

	 */

	if (ret >= 0)

		aac_fib_complete(fibptr);



	/*

	 * FIB should be freed only after

	 * getting the response from the F/W

	 */

	if (ret != -ERESTARTSYS)

		goto fib_free_out;



out:

	return ret;

fib_free_out:

	aac_fib_free(fibptr);

	goto out;

}



int aac_send_safw_hostttime(struct aac_dev *dev, struct timeval *now)

{

	struct tm cur_tm;

	char wellness_str[] = "<HW>TD\010\0\0\0\0\0\0\0\0\0DW\0\0ZZ";

	u32 datasize = sizeof(wellness_str);

	unsigned long local_time;

	int ret = -ENODEV;



	if (!dev->sa_firmware)

		goto out;



	local_time = (u32)(now->tv_sec - (sys_tz.tz_minuteswest * 60));

	time_to_tm(local_time, 0, &cur_tm);

	cur_tm.tm_mon += 1;

	cur_tm.tm_year += 1900;

	wellness_str[8] = bin2bcd(cur_tm.tm_hour);

	wellness_str[9] = bin2bcd(cur_tm.tm_min);

	wellness_str[10] = bin2bcd(cur_tm.tm_sec);

	wellness_str[12] = bin2bcd(cur_tm.tm_mon);

	wellness_str[13] = bin2bcd(cur_tm.tm_mday);

	wellness_str[14] = bin2bcd(cur_tm.tm_year / 100);

	wellness_str[15] = bin2bcd(cur_tm.tm_year % 100);



	ret = aac_send_wellness_command(dev, wellness_str, datasize);



out:

	return ret;

}



int aac_send_hosttime(struct aac_dev *dev, struct timeval *now)

{

	int ret = -ENOMEM;

	struct fib *fibptr;

	__le32 *info;



	fibptr = aac_fib_alloc(dev);

	if (!fibptr)

		goto out;



	aac_fib_init(fibptr);

	info = (__le32 *)fib_data(fibptr);

	*info = cpu_to_le32(now->tv_sec);

	ret = aac_fib_send(SendHostTime, fibptr, sizeof(*info), FsaNormal,

					1, 1, NULL, NULL);



	/*

	 * Do not set XferState to zero unless

	 * receives a response from F/W

	 */

	if (ret >= 0)

		aac_fib_complete(fibptr);



	/*

	 * FIB should be freed only after

	 * getting the response from the F/W

	 */

	if (ret != -ERESTARTSYS)

		aac_fib_free(fibptr);



out:

	return ret;

}



/**

 *	aac_command_thread	-	command processing thread

 *	@dev: Adapter to monitor
@@ -2058,7 +2195,7 @@ int aac_command_thread(void *data) 


			/* Don't even try to talk to adapter if its sick */

			ret = aac_check_health(dev);

			if (!ret && !dev->queues)

			if (!dev->queues)

				break;

			next_check_jiffies = jiffies

					   + ((long)(unsigned)check_interval)
@@ -2071,36 +2208,16 @@ int aac_command_thread(void *data) 
				difference = (((1000000 - now.tv_usec) * HZ)

				  + 500000) / 1000000;

			else if (ret == 0) {

				struct fib *fibptr;



				if ((fibptr = aac_fib_alloc(dev))) {

					int status;

					__le32 *info;



					aac_fib_init(fibptr);



					info = (__le32 *) fib_data(fibptr);

				if (now.tv_usec > 500000)

					++now.tv_sec;



					*info = cpu_to_le32(now.tv_sec);

				if (dev->sa_firmware)

					ret =

					aac_send_safw_hostttime(dev, &now);

				else

					ret = aac_send_hosttime(dev, &now);



					status = aac_fib_send(SendHostTime,

						fibptr,

						sizeof(*info),

						FsaNormal,

						1, 1,

						NULL,

						NULL);

					/* Do not set XferState to zero unless

					 * receives a response from F/W */

					if (status >= 0)

						aac_fib_complete(fibptr);

					/* FIB should be freed only after

					 * getting the response from the F/W */

					if (status != -ERESTARTSYS)

						aac_fib_free(fibptr);

				}

				difference = (long)(unsigned)update_interval*HZ;

			} else {

				/* retry shortly */