scsi/megaraid/megaraid_mbox.c

953 	scb_t			*scb;
1011 	 * Allocate memory for the base list of scb. Later allocate memory for
1013 	 * scb to the allocated components
1035 	// Adjust the scb pointers and link in the free pool
1041 		scb			= adapter->kscb_list + i;
1068 		scb->ccb		= (caddr_t)ccb;
1069 		scb->gp			= 0;
1071 		scb->sno		= i;	// command index
1073 		scb->scp		= NULL;
1074 		scb->state		= SCB_FREE;
1075 		scb->dma_direction	= DMA_NONE;
1076 		scb->dma_type		= MRAID_DMA_NONE;
1077 		scb->dev_channel	= -1;
1078 		scb->dev_target		= -1;
1080 		// put scb in the free pool
1081 		list_add_tail(&scb->list, &adapter->kscb_pool);
1266  * megaraid_alloc_scb - detach and return a scb from the free list
1270  * Return the scb from the head of the free list. %NULL if there are none
1277 	scb_t			*scb = NULL;
1280 	// detach scb from free pool
1288 	scb = list_entry(head->next, scb_t, list);
1289 	list_del_init(&scb->list);
1293 	scb->state	= SCB_ACTIVE;
1294 	scb->scp	= scp;
1295 	scb->dma_type	= MRAID_DMA_NONE;
1297 	return scb;
1302  * megaraid_dealloc_scb - return the scb to the free pool
1304  * @scb		: scb to be freed
1306  * Return the scb back to the free list of scbs. The caller must 'flush' the
1308  * NOTE NOTE: Make sure the scb is not on any list before calling this
1312 megaraid_dealloc_scb(adapter_t *adapter, scb_t *scb)
1316 	// put scb in the free pool
1317 	scb->state	= SCB_FREE;
1318 	scb->scp	= NULL;
1321 	list_add(&scb->list, &adapter->kscb_pool);
1332  * @scb		: scsi control block
1337 megaraid_mbox_mksgl(adapter_t *adapter, scb_t *scb)
1346 	scp	= scb->scp;
1347 	ccb	= (mbox_ccb_t *)scb->ccb;
1356 	scb->dma_type = MRAID_DMA_WSG;
1371  * @scb		: command to be issued
1376 mbox_post_cmd(adapter_t *adapter, scb_t *scb)
1386 	ccb	= (mbox_ccb_t *)scb->ccb;
1414 	mbox->cmdid = scb->sno;
1441 	scb_t		*scb;
1450 	 * not allocate scb. We will return non-zero status in that case.
1451 	 * NOTE: scb can be null even though certain commands completed
1456 	scb = megaraid_mbox_build_cmd(adapter, scp, &if_busy);
1457 	if (!scb) {	// command already completed
1462 	megaraid_mbox_runpendq(adapter, scb);
1490 	scb_t			*scb;
1517 			if (!(scb = megaraid_alloc_scb(adapter, scp))) {
1523 			scb->dma_direction	= scp->sc_data_direction;
1524 			scb->dev_channel	= 0xFF;
1525 			scb->dev_target		= target;
1526 			ccb			= (mbox_ccb_t *)scb->ccb;
1536 			return scb;
1600 			if (!(scb = megaraid_alloc_scb(adapter, scp))) {
1606 			ccb			= (mbox_ccb_t *)scb->ccb;
1607 			scb->dev_channel	= 0xFF;
1608 			scb->dev_target		= target;
1622 			scb->dma_direction	= scp->sc_data_direction;
1627 							scb);
1633 			return scb;
1645 			if (!(scb = megaraid_alloc_scb(adapter, scp))) {
1650 			ccb			= (mbox_ccb_t *)scb->ccb;
1651 			scb->dev_channel	= 0xFF;
1652 			scb->dev_target		= target;
1711 				megaraid_dealloc_scb(adapter, scb);
1717 			scb->dma_direction = scp->sc_data_direction;
1722 							scb);
1726 			return scb;
1741 			if (!(scb = megaraid_alloc_scb(adapter, scp))) {
1747 			ccb			= (mbox_ccb_t *)scb->ccb;
1748 			scb->dev_channel	= 0xFF;
1749 			scb->dev_target		= target;
1755 			scb->dma_direction	= scp->sc_data_direction;
1757 			return scb;
1809 		if (!(scb = megaraid_alloc_scb(adapter, scp))) {
1815 		ccb			= (mbox_ccb_t *)scb->ccb;
1816 		scb->dev_channel	= channel;
1817 		scb->dev_target		= target;
1818 		scb->dma_direction	= scp->sc_data_direction;
1826 			megaraid_mbox_prepare_epthru(adapter, scb, scp);
1835 			megaraid_mbox_prepare_pthru(adapter, scb, scp);
1841 		return scb;
1864 	scb_t			*scb;
1884 		scb = list_entry(adapter->pend_list.next, scb_t, list);
1886 		// remove the scb from the pending list and try to
1890 		list_del_init(&scb->list);
1898 		scb->state = SCB_ISSUED;
1900 		if (mbox_post_cmd(adapter, scb) != 0) {
1904 			scb->state = SCB_PENDQ;
1906 			list_add(&scb->list, &adapter->pend_list);
1927  * @scb		: scsi control block
1933 megaraid_mbox_prepare_pthru(adapter_t *adapter, scb_t *scb,
1941 	ccb	= (mbox_ccb_t *)scb->ccb;
1943 	channel	= scb->dev_channel;
1944 	target	= scb->dev_target;
1961 		pthru->numsge		= megaraid_mbox_mksgl(adapter, scb);
1975  * @scb		: scsi control block
1982 megaraid_mbox_prepare_epthru(adapter_t *adapter, scb_t *scb,
1990 	ccb	= (mbox_ccb_t *)scb->ccb;
1992 	channel	= scb->dev_channel;
1993 	target	= scb->dev_target;
2010 		epthru->numsge		= megaraid_mbox_mksgl(adapter, scb);
2035 	scb_t			*scb;
2099 				scb = adapter->uscb_list + (completed[i] -
2104 				scb = adapter->kscb_list + completed[i];
2107 			scb->status = mbox->status;
2108 			list_add_tail(&scb->list, &clist);
2175 	scb_t			*scb;
2205 	list_for_each_entry_safe(scb, tmp, &clist, list) {
2207 		status		= scb->status;
2208 		scp		= scb->scp;
2209 		ccb		= (mbox_ccb_t *)scb->ccb;
2215 		if (scb->state != SCB_ISSUED) {
2218 				scb->sno, scb->state, scp));
2224 		if (scb->sno >= MBOX_MAX_SCSI_CMDS) {
2225 			scb->state	= SCB_FREE;
2226 			scb->status	= status;
2229 			list_del_init(&scb->list);
2231 			kioc			= (uioc_t *)scb->gp;
2234 			megaraid_mbox_mm_done(adapter, scb);
2240 		if (scb->state & SCB_ABORT) {
2243 				scb->sno));
2256 				&& IS_RAID_CH(raid_dev, scb->dev_channel)) {
2269 				pdev_index = (scb->dev_channel * 16) +
2270 					scb->dev_target;
2350 			megaraid_mbox_display_scb(adapter, scb);
2356 		list_del_init(&scb->list);
2359 		megaraid_dealloc_scb(adapter, scb);
2381 	scb_t			*scb;
2407 	scb = NULL;
2409 	list_for_each_entry_safe(scb, tmp, &adapter->completed_list, list) {
2411 		if (scb->scp == scp) {	// Found command
2413 			list_del_init(&scb->list);	// from completed list
2417 				scb->sno, scb->dev_channel, scb->dev_target));
2422 			megaraid_dealloc_scb(adapter, scb);
2437 	list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) {
2439 		if (scb->scp == scp) {	// Found command
2441 			list_del_init(&scb->list);	// from pending list
2443 			ASSERT(!(scb->state & SCB_ISSUED));
2447 				scb->dev_channel, scb->dev_target));
2452 			megaraid_dealloc_scb(adapter, scb);
2464 	// owned by the firmware. The only way to locate the FW scb is to
2470 		scb = adapter->kscb_list + i;
2472 		if (scb->scp == scp) {
2476 			if (!(scb->state & SCB_ISSUED)) {
2479 				scb->sno, scb->dev_channel, scb->dev_target));
2485 				scb->sno, scb->dev_channel, scb->dev_target));
2518 	scb_t		*scb;
2544 	list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) {
2545 		list_del_init(&scb->list);	// from pending list
2547 		if (scb->sno >= MBOX_MAX_SCSI_CMDS) {
2550 			scb->sno, scb->dev_channel, scb->dev_target));
2552 			scb->status = -1;
2554 			kioc			= (uioc_t *)scb->gp;
2557 			megaraid_mbox_mm_done(adapter, scb);
2559 			if (scb->scp == scp) {	// Found command
2562 					scb->sno, scb->dev_channel, scb->dev_target));
2566 				scb->sno, scb->dev_channel, scb->dev_target));
2569 			scb->scp->result = (DID_RESET << 16);
2570 			scsi_done(scb->scp);
2572 			megaraid_dealloc_scb(adapter, scb);
2662  * Issue a scb in synchronous and non-interrupt mode for mailbox based
2791  * Issue a scb in synchronous and non-interrupt mode for mailbox based
3297  * @scb			: SCB to be displayed
3303 megaraid_mbox_display_scb(adapter_t *adapter, scb_t *scb)
3312 	ccb	= (mbox_ccb_t *)scb->ccb;
3313 	scp	= scb->scp;
3319 		"megaraid mailbox: status:%#x cmd:%#x id:%#x ", scb->status,
3320 		mbox->cmd, scb->sno));
3397 	scb_t		*scb;
3402 	// Allocate memory for the base list of scb for management module.
3427 		scb			= adapter->uscb_list + i;
3430 		scb->ccb		= (caddr_t)ccb;
3435 		scb->gp			= 0;
3439 		scb->sno		= i + MBOX_MAX_SCSI_CMDS;
3441 		scb->scp		= NULL;
3442 		scb->state		= SCB_FREE;
3443 		scb->dma_direction	= DMA_NONE;
3444 		scb->dma_type		= MRAID_DMA_NONE;
3445 		scb->dev_channel	= -1;
3446 		scb->dev_target		= -1;
3448 		// put scb in the free pool
3449 		list_add_tail(&scb->list, &adapter->uscb_pool);
3557 	scb_t			*scb;
3561 	// detach one scb from free pool
3574 	scb = list_entry(head->next, scb_t, list);
3575 	list_del_init(&scb->list);
3579 	scb->state		= SCB_ACTIVE;
3580 	scb->dma_type		= MRAID_DMA_NONE;
3581 	scb->dma_direction	= DMA_NONE;
3583 	ccb		= (mbox_ccb_t *)scb->ccb;
3589 	scb->gp		= (unsigned long)kioc;
3603 			scb->status = -1;
3605 			megaraid_mbox_mm_done(adapter, scb);
3610 		INIT_LIST_HEAD(&scb->list);
3612 		scb->state = SCB_ISSUED;
3613 		if (mbox_post_cmd(adapter, scb) != 0) {
3620 			scb->status = -1;
3622 			megaraid_mbox_mm_done(adapter, scb);
3631 	megaraid_mbox_runpendq(adapter, scb);
3670  * @scb		: completed command
3676 megaraid_mbox_mm_done(adapter_t *adapter, scb_t *scb)
3683 	kioc			= (uioc_t *)scb->gp;
3685 	mbox64->mbox32.status	= scb->status;
3689 	// put scb in the free pool
3690 	scb->state	= SCB_FREE;
3691 	scb->scp	= NULL;
3695 	list_add(&scb->list, &adapter->uscb_pool);