378 	scb_t	*scb;  in megaraid_queue_lck()  local
385 	 * Allocate and build a SCB request  in megaraid_queue_lck()
387 	 * allocate scb. We will return non-zero status in that case.  in megaraid_queue_lck()
388 	 * NOTE: scb can be null even though certain commands completed  in megaraid_queue_lck()
394 	scb = mega_build_cmd(adapter, scmd, &busy);  in megaraid_queue_lck()
395 	if (!scb)  in megaraid_queue_lck()
398 	scb->state |= SCB_PENDQ;  in megaraid_queue_lck()
399 	list_add_tail(&scb->list, &adapter->pending_list);  in megaraid_queue_lck()
422  * Allocate a SCB structure. This is the central structure for controller  in DEF_SCSI_QCMD()
429 	scb_t	*scb;  in DEF_SCSI_QCMD()  local
434 		scb = list_entry(head->next, scb_t, list);  in DEF_SCSI_QCMD()
438 		scb->state = SCB_ACTIVE;  in DEF_SCSI_QCMD()
439 		scb->cmd = cmd;  in DEF_SCSI_QCMD()
440 		scb->dma_type = MEGA_DMA_TYPE_NONE;  in DEF_SCSI_QCMD()
442 		return scb;  in DEF_SCSI_QCMD()
524 	scb_t	*scb;  in mega_build_cmd()  local
642 			if(!(scb = mega_allocate_scb(adapter, cmd))) {  in mega_build_cmd()
647 			scb->raw_mbox[0] = MEGA_CLUSTER_CMD;  in mega_build_cmd()
648 			scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;  in mega_build_cmd()
649 			scb->raw_mbox[3] = ldrv_num;  in mega_build_cmd()
651 			scb->dma_direction = DMA_NONE;  in mega_build_cmd()
653 			return scb;  in mega_build_cmd()
689 			/* Allocate a SCB and initialize passthru */  in mega_build_cmd()
690 			if(!(scb = mega_allocate_scb(adapter, cmd))) {  in mega_build_cmd()
694 			pthru = scb->pthru;  in mega_build_cmd()
696 			mbox = (mbox_t *)scb->raw_mbox;  in mega_build_cmd()
697 			memset(mbox, 0, sizeof(scb->raw_mbox));  in mega_build_cmd()
715 			scb->dma_direction = DMA_FROM_DEVICE;  in mega_build_cmd()
717 			pthru->numsgelements = mega_build_sglist(adapter, scb,  in mega_build_cmd()
720 			mbox->m_out.xferaddr = scb->pthru_dma_addr;  in mega_build_cmd()
722 			return scb;  in mega_build_cmd()
731 			/* Allocate a SCB and initialize mailbox */  in mega_build_cmd()
732 			if(!(scb = mega_allocate_scb(adapter, cmd))) {  in mega_build_cmd()
736 			mbox = (mbox_t *)scb->raw_mbox;  in mega_build_cmd()
738 			memset(mbox, 0, sizeof(scb->raw_mbox));  in mega_build_cmd()
845 				scb->dma_direction = DMA_FROM_DEVICE;  in mega_build_cmd()
848 				scb->dma_direction = DMA_TO_DEVICE;  in mega_build_cmd()
852 			mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,  in mega_build_cmd()
855 			return scb;  in mega_build_cmd()
871 			/* Allocate a SCB and initialize mailbox */  in mega_build_cmd()
872 			if(!(scb = mega_allocate_scb(adapter, cmd))) {  in mega_build_cmd()
877 			scb->raw_mbox[0] = MEGA_CLUSTER_CMD;  in mega_build_cmd()
878 			scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?  in mega_build_cmd()
881 			scb->raw_mbox[3] = ldrv_num;  in mega_build_cmd()
883 			scb->dma_direction = DMA_NONE;  in mega_build_cmd()
885 			return scb;  in mega_build_cmd()
899 		/* Allocate a SCB and initialize passthru */  in mega_build_cmd()
900 		if(!(scb = mega_allocate_scb(adapter, cmd))) {  in mega_build_cmd()
905 		mbox = (mbox_t *)scb->raw_mbox;  in mega_build_cmd()
906 		memset(mbox, 0, sizeof(scb->raw_mbox));  in mega_build_cmd()
910 			mega_prepare_extpassthru(adapter, scb, cmd,  in mega_build_cmd()
915 			mbox->m_out.xferaddr = scb->epthru_dma_addr;  in mega_build_cmd()
920 			pthru = mega_prepare_passthru(adapter, scb, cmd,  in mega_build_cmd()
931 			mbox->m_out.xferaddr = scb->pthru_dma_addr;  in mega_build_cmd()
934 		return scb;  in mega_build_cmd()
943  * @scb: our scsi control block
951 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, struct scsi_cmnd *cmd,  in mega_prepare_passthru()  argument
956 	pthru = scb->pthru;  in mega_prepare_passthru()
977 	scb->dma_direction = DMA_BIDIRECTIONAL;  in mega_prepare_passthru()
995 		pthru->numsgelements = mega_build_sglist(adapter, scb,  in mega_prepare_passthru()
1006  * @scb: our scsi control block
1015 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb,  in mega_prepare_extpassthru()  argument
1021 	epthru = scb->epthru;  in mega_prepare_extpassthru()
1041 	scb->dma_direction = DMA_BIDIRECTIONAL;  in mega_prepare_extpassthru()
1058 		epthru->numsgelements = mega_build_sglist(adapter, scb,  in mega_prepare_extpassthru()
1069 	scb_t *scb;  in __mega_runpendq()  local
1075 		scb = list_entry(pos, scb_t, list);  in __mega_runpendq()
1077 		if( !(scb->state & SCB_ISSUED) ) {  in __mega_runpendq()
1079 			if( issue_scb(adapter, scb) != 0 )  in __mega_runpendq()
1091  * @scb: scsi control block
1094  * busy. We also take the scb from the pending list if the mailbox is
1098 issue_scb(adapter_t *adapter, scb_t *scb)  in issue_scb()  argument
1114 	memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,   in issue_scb()
1117 	mbox->m_out.cmdid = scb->idx;	/* Set cmdid */  in issue_scb()
1143 	scb->state |= SCB_ISSUED;  in issue_scb()
1174  * Issue a scb in synchronous and non-interrupt mode
1422 	scb_t	*scb;  in mega_cmd_done()  local
1429 	 * and free the scb.  in mega_cmd_done()
1443 			scb = &adapter->int_scb;  in mega_cmd_done()
1444 			cmd = scb->cmd;  in mega_cmd_done()
1446 			list_del_init(&scb->list);  in mega_cmd_done()
1447 			scb->state = SCB_FREE;  in mega_cmd_done()
1452 			scb = &adapter->scb_list[cmdid];  in mega_cmd_done()
1457 			if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {  in mega_cmd_done()
1459 					"Id %d, scb->state:%x, scsi cmd:%p\n",  in mega_cmd_done()
1460 					cmdid, scb->state, scb->cmd);  in mega_cmd_done()
1468 			if( scb->state & SCB_ABORT ) {  in mega_cmd_done()
1472 					scb->idx);  in mega_cmd_done()
1474 				scb->cmd->result = (DID_ABORT << 16);  in mega_cmd_done()
1476 				list_add_tail(SCSI_LIST(scb->cmd),  in mega_cmd_done()
1479 				mega_free_scb(adapter, scb);  in mega_cmd_done()
1487 			if( scb->state & SCB_RESET ) {  in mega_cmd_done()
1491 					scb->idx);  in mega_cmd_done()
1493 				scb->cmd->result = (DID_RESET << 16);  in mega_cmd_done()
1495 				list_add_tail(SCSI_LIST(scb->cmd),  in mega_cmd_done()
1498 				mega_free_scb (adapter, scb);  in mega_cmd_done()
1503 			cmd = scb->cmd;  in mega_cmd_done()
1504 			pthru = scb->pthru;  in mega_cmd_done()
1505 			epthru = scb->epthru;  in mega_cmd_done()
1506 			mbox = (mbox_t *)scb->raw_mbox;  in mega_cmd_done()
1632 		mega_free_scb(adapter, scb);  in mega_cmd_done()
1658  * Free a SCB structure
1659  * Note: We assume the scsi commands associated with this scb is not free yet.
1662 mega_free_scb(adapter_t *adapter, scb_t *scb)  in mega_free_scb()  argument
1664 	switch( scb->dma_type ) {  in mega_free_scb()
1670 		scsi_dma_unmap(scb->cmd);  in mega_free_scb()
1679 	list_del_init(&scb->list);  in mega_free_scb()
1681 	/* Link the scb back into free list */  in mega_free_scb()
1682 	scb->state = SCB_FREE;  in mega_free_scb()
1683 	scb->cmd = NULL;  in mega_free_scb()
1685 	list_add(&scb->list, &adapter->free_list);  in mega_free_scb()
1709 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)  in mega_build_sglist()  argument
1716 	cmd = scb->cmd;  in mega_build_sglist()
1725 	scb->dma_type = MEGA_SGLIST;  in mega_build_sglist()
1733 		scb->dma_h_bulkdata = sg_dma_address(sg);  in mega_build_sglist()
1734 		*buf = (u32)scb->dma_h_bulkdata;  in mega_build_sglist()
1741 			scb->sgl64[idx].address = sg_dma_address(sg);  in mega_build_sglist()
1742 			*len += scb->sgl64[idx].length = sg_dma_len(sg);  in mega_build_sglist()
1744 			scb->sgl[idx].address = sg_dma_address(sg);  in mega_build_sglist()
1745 			*len += scb->sgl[idx].length = sg_dma_len(sg);  in mega_build_sglist()
1750 	*buf = scb->sgl_dma_addr;  in mega_build_sglist()
1800 	scb_t	*scb;  in mega_free_sgl()  local
1805 		scb = &adapter->scb_list[i];  in mega_free_sgl()
1807 		if( scb->sgl64 ) {  in mega_free_sgl()
1810 					  scb->sgl64, scb->sgl_dma_addr);  in mega_free_sgl()
1812 			scb->sgl64 = NULL;  in mega_free_sgl()
1815 		if( scb->pthru ) {  in mega_free_sgl()
1817 					  sizeof(mega_passthru), scb->pthru,  in mega_free_sgl()
1818 					  scb->pthru_dma_addr);  in mega_free_sgl()
1820 			scb->pthru = NULL;  in mega_free_sgl()
1823 		if( scb->epthru ) {  in mega_free_sgl()
1826 					  scb->epthru, scb->epthru_dma_addr);  in mega_free_sgl()
1828 			scb->epthru = NULL;  in mega_free_sgl()
1926 	scb_t			*scb;  in megaraid_abort_and_reset()  local
1941 		scb = list_entry(pos, scb_t, list);  in megaraid_abort_and_reset()
1943 		if (!cmd || scb->cmd == cmd) { /* Found command */  in megaraid_abort_and_reset()
1945 			scb->state |= aor;  in megaraid_abort_and_reset()
1953 			if( scb->state & SCB_ISSUED ) {  in megaraid_abort_and_reset()
1958 					scb->idx);  in megaraid_abort_and_reset()
1969 				 scb->idx);  in megaraid_abort_and_reset()
1970 			mega_free_scb(adapter, scb);  in megaraid_abort_and_reset()
2848  * Allocate memory for the various pointers in the scb structures:
2855 	scb_t	*scb;  in mega_init_scb()  local
2860 		scb = &adapter->scb_list[i];  in mega_init_scb()
2862 		scb->sgl64 = NULL;  in mega_init_scb()
2863 		scb->sgl = NULL;  in mega_init_scb()
2864 		scb->pthru = NULL;  in mega_init_scb()
2865 		scb->epthru = NULL;  in mega_init_scb()
2870 		scb = &adapter->scb_list[i];  in mega_init_scb()
2872 		scb->idx = i;  in mega_init_scb()
2874 		scb->sgl64 = dma_alloc_coherent(&adapter->dev->dev,  in mega_init_scb()
2876 						&scb->sgl_dma_addr, GFP_KERNEL);  in mega_init_scb()
2878 		scb->sgl = (mega_sglist *)scb->sgl64;  in mega_init_scb()
2880 		if( !scb->sgl ) {  in mega_init_scb()
2886 		scb->pthru = dma_alloc_coherent(&adapter->dev->dev,  in mega_init_scb()
2888 						&scb->pthru_dma_addr, GFP_KERNEL);  in mega_init_scb()
2890 		if( !scb->pthru ) {  in mega_init_scb()
2896 		scb->epthru = dma_alloc_coherent(&adapter->dev->dev,  in mega_init_scb()
2898 						 &scb->epthru_dma_addr, GFP_KERNEL);  in mega_init_scb()
2900 		if( !scb->epthru ) {  in mega_init_scb()
2908 		scb->dma_type = MEGA_DMA_TYPE_NONE;  in mega_init_scb()
2915 		scb->state = SCB_FREE;  in mega_init_scb()
2916 		scb->cmd = NULL;  in mega_init_scb()
2917 		list_add(&scb->list, &adapter->free_list);  in mega_init_scb()
3766 	scb_t *scb;  in mega_del_logdrv()  local
3794 			scb = list_entry(pos, scb_t, list);  in mega_del_logdrv()
3795 			if (scb->pthru->logdrv < 0x80 )  in mega_del_logdrv()
3796 				scb->pthru->logdrv += 0x80;  in mega_del_logdrv()
4047 	scb_t	*scb;  in mega_internal_command()  local
4057 	scb = &adapter->int_scb;  in mega_internal_command()
4058 	memset(scb, 0, sizeof(scb_t));  in mega_internal_command()
4060 	scb->idx = CMDID_INT_CMDS;  in mega_internal_command()
4061 	scb->state |= SCB_ACTIVE | SCB_PENDQ;  in mega_internal_command()
4063 	memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));  in mega_internal_command()
4069 		scb->pthru = pthru;  in mega_internal_command()
4072 	list_add_tail(&scb->list, &adapter->pending_list);  in mega_internal_command()