drivers/scsi/megaraid.c

375 	scb_t	*scb;
387 	 * allocate scb. We will return non-zero status in that case.
388 	 * NOTE: scb can be null even though certain commands completed
394 	scb = mega_build_cmd(adapter, scmd, &busy);
395 	if (!scb)
398 	scb->state |= SCB_PENDQ;
399 	list_add_tail(&scb->list, &adapter->pending_list);
429 	scb_t	*scb;
434 		scb = list_entry(head->next, scb_t, list);
438 		scb->state = SCB_ACTIVE;
439 		scb->cmd = cmd;
440 		scb->dma_type = MEGA_DMA_TYPE_NONE;
442 		return scb;
525 	scb_t	*scb;
650 			if(!(scb = mega_allocate_scb(adapter, cmd))) {
655 			scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
656 			scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
657 			scb->raw_mbox[3] = ldrv_num;
659 			scb->dma_direction = PCI_DMA_NONE;
661 			return scb;
698 			if(!(scb = mega_allocate_scb(adapter, cmd))) {
702 			pthru = scb->pthru;
704 			mbox = (mbox_t *)scb->raw_mbox;
705 			memset(mbox, 0, sizeof(scb->raw_mbox));
723 			scb->dma_direction = PCI_DMA_FROMDEVICE;
725 			pthru->numsgelements = mega_build_sglist(adapter, scb,
728 			mbox->m_out.xferaddr = scb->pthru_dma_addr;
730 			return scb;
740 			if(!(scb = mega_allocate_scb(adapter, cmd))) {
744 			mbox = (mbox_t *)scb->raw_mbox;
746 			memset(mbox, 0, sizeof(scb->raw_mbox));
853 				scb->dma_direction = PCI_DMA_FROMDEVICE;
856 				scb->dma_direction = PCI_DMA_TODEVICE;
860 			mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
863 			return scb;
880 			if(!(scb = mega_allocate_scb(adapter, cmd))) {
885 			scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
886 			scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
889 			scb->raw_mbox[3] = ldrv_num;
891 			scb->dma_direction = PCI_DMA_NONE;
893 			return scb;
908 		if(!(scb = mega_allocate_scb(adapter, cmd))) {
913 		mbox = (mbox_t *)scb->raw_mbox;
914 		memset(mbox, 0, sizeof(scb->raw_mbox));
918 			epthru = mega_prepare_extpassthru(adapter, scb, cmd,
923 			mbox->m_out.xferaddr = scb->epthru_dma_addr;
928 			pthru = mega_prepare_passthru(adapter, scb, cmd,
939 			mbox->m_out.xferaddr = scb->pthru_dma_addr;
942 		return scb;
951  * @scb - our scsi control block
959 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
964 	pthru = scb->pthru;
985 	scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1003 		pthru->numsgelements = mega_build_sglist(adapter, scb,
1014  * @scb - our scsi control block
1023 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1028 	epthru = scb->epthru;
1048 	scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1065 		epthru->numsgelements = mega_build_sglist(adapter, scb,
1076 	scb_t *scb;
1082 		scb = list_entry(pos, scb_t, list);
1084 		if( !(scb->state & SCB_ISSUED) ) {
1086 			if( issue_scb(adapter, scb) != 0 )
1098  * @scb - scsi control block
1101  * busy. We also take the scb from the pending list if the mailbox is
1105 issue_scb(adapter_t *adapter, scb_t *scb)
1121 	memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1124 	mbox->m_out.cmdid = scb->idx;	/* Set cmdid */
1150 	scb->state |= SCB_ISSUED;
1181  * Issue a scb in synchronous and non-interrupt mode
1429 	scb_t	*scb;
1436 	 * and free the scb.
1443 			scb = &adapter->int_scb;
1444 			cmd = scb->cmd;
1445 			mbox = (mbox_t *)scb->raw_mbox;
1451 			pthru = scb->pthru;
1455 			scb = &adapter->scb_list[cmdid];
1460 			if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1463 				printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1464 					cmdid, scb->state, scb->cmd);
1472 			if( scb->state & SCB_ABORT ) {
1476 					scb->idx);
1478 				scb->cmd->result = (DID_ABORT << 16);
1480 				list_add_tail(SCSI_LIST(scb->cmd),
1483 				mega_free_scb(adapter, scb);
1491 			if( scb->state & SCB_RESET ) {
1495 					scb->idx);
1497 				scb->cmd->result = (DID_RESET << 16);
1499 				list_add_tail(SCSI_LIST(scb->cmd),
1502 				mega_free_scb (adapter, scb);
1507 			cmd = scb->cmd;
1508 			pthru = scb->pthru;
1509 			epthru = scb->epthru;
1510 			mbox = (mbox_t *)scb->raw_mbox;
1656 			list_del_init(&scb->list);
1657 			scb->state = SCB_FREE;
1660 			mega_free_scb(adapter, scb);
1694  * Note: We assume the scsi commands associated with this scb is not free yet.
1697 mega_free_scb(adapter_t *adapter, scb_t *scb)
1699 	switch( scb->dma_type ) {
1705 		scsi_dma_unmap(scb->cmd);
1714 	list_del_init(&scb->list);
1716 	/* Link the scb back into free list */
1717 	scb->state = SCB_FREE;
1718 	scb->cmd = NULL;
1720 	list_add(&scb->list, &adapter->free_list);
1744 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1751 	cmd = scb->cmd;
1760 	scb->dma_type = MEGA_SGLIST;
1768 		scb->dma_h_bulkdata = sg_dma_address(sg);
1769 		*buf = (u32)scb->dma_h_bulkdata;
1776 			scb->sgl64[idx].address = sg_dma_address(sg);
1777 			*len += scb->sgl64[idx].length = sg_dma_len(sg);
1779 			scb->sgl[idx].address = sg_dma_address(sg);
1780 			*len += scb->sgl[idx].length = sg_dma_len(sg);
1785 	*buf = scb->sgl_dma_addr;
1835 	scb_t	*scb;
1840 		scb = &adapter->scb_list[i];
1842 		if( scb->sgl64 ) {
1845 				scb->sgl64,
1846 				scb->sgl_dma_addr);
1848 			scb->sgl64 = NULL;
1851 		if( scb->pthru ) {
1853 				scb->pthru, scb->pthru_dma_addr);
1855 			scb->pthru = NULL;
1858 		if( scb->epthru ) {
1861 				scb->epthru, scb->epthru_dma_addr);
1863 			scb->epthru = NULL;
1962 	scb_t			*scb;
1974 		scb = list_entry(pos, scb_t, list);
1976 		if (scb->cmd == cmd) { /* Found command */
1978 			scb->state |= aor;
1986 			if( scb->state & SCB_ISSUED ) {
1991 					scb->idx);
2004 					scb->idx);
2006 				mega_free_scb(adapter, scb);
3205  * Allocate memory for the various pointers in the scb structures:
3212 	scb_t	*scb;
3217 		scb = &adapter->scb_list[i];
3219 		scb->sgl64 = NULL;
3220 		scb->sgl = NULL;
3221 		scb->pthru = NULL;
3222 		scb->epthru = NULL;
3227 		scb = &adapter->scb_list[i];
3229 		scb->idx = i;
3231 		scb->sgl64 = pci_alloc_consistent(adapter->dev,
3233 				&scb->sgl_dma_addr);
3235 		scb->sgl = (mega_sglist *)scb->sgl64;
3237 		if( !scb->sgl ) {
3243 		scb->pthru = pci_alloc_consistent(adapter->dev,
3245 				&scb->pthru_dma_addr);
3247 		if( !scb->pthru ) {
3253 		scb->epthru = pci_alloc_consistent(adapter->dev,
3255 				&scb->epthru_dma_addr);
3257 		if( !scb->epthru ) {
3265 		scb->dma_type = MEGA_DMA_TYPE_NONE;
3272 		scb->state = SCB_FREE;
3273 		scb->cmd = NULL;
3274 		list_add(&scb->list, &adapter->free_list);
4135 	scb_t *scb;
4163 			scb = list_entry(pos, scb_t, list);
4164 			if (scb->pthru->logdrv < 0x80 )
4165 				scb->pthru->logdrv += 0x80;
4423 	scb_t	*scb;
4437 	scb = &adapter->int_scb;
4438 	memset(scb, 0, sizeof(scb_t));
4446 	scmd->host_scribble = (void *)scb;
4449 	scb->state |= SCB_ACTIVE;
4450 	scb->cmd = scmd;
4452 	memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4459 		scb->pthru = pthru;
4462 	scb->idx = CMDID_INT_CMDS;