drivers/scsi/megaraid.c

378 	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;
524 	scb_t	*scb;
642 			if(!(scb = mega_allocate_scb(adapter, cmd))) {
647 			scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
648 			scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
649 			scb->raw_mbox[3] = ldrv_num;
651 			scb->dma_direction = DMA_NONE;
653 			return scb;
690 			if(!(scb = mega_allocate_scb(adapter, cmd))) {
694 			pthru = scb->pthru;
696 			mbox = (mbox_t *)scb->raw_mbox;
697 			memset(mbox, 0, sizeof(scb->raw_mbox));
715 			scb->dma_direction = DMA_FROM_DEVICE;
717 			pthru->numsgelements = mega_build_sglist(adapter, scb,
720 			mbox->m_out.xferaddr = scb->pthru_dma_addr;
722 			return scb;
732 			if(!(scb = mega_allocate_scb(adapter, cmd))) {
736 			mbox = (mbox_t *)scb->raw_mbox;
738 			memset(mbox, 0, sizeof(scb->raw_mbox));
845 				scb->dma_direction = DMA_FROM_DEVICE;
848 				scb->dma_direction = DMA_TO_DEVICE;
852 			mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
855 			return scb;
872 			if(!(scb = mega_allocate_scb(adapter, cmd))) {
877 			scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
878 			scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
881 			scb->raw_mbox[3] = ldrv_num;
883 			scb->dma_direction = DMA_NONE;
885 			return scb;
900 		if(!(scb = mega_allocate_scb(adapter, cmd))) {
905 		mbox = (mbox_t *)scb->raw_mbox;
906 		memset(mbox, 0, sizeof(scb->raw_mbox));
910 			mega_prepare_extpassthru(adapter, scb, cmd,
915 			mbox->m_out.xferaddr = scb->epthru_dma_addr;
920 			pthru = mega_prepare_passthru(adapter, scb, cmd,
931 			mbox->m_out.xferaddr = scb->pthru_dma_addr;
934 		return scb;
943  * @scb: our scsi control block
951 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, struct scsi_cmnd *cmd,
956 	pthru = scb->pthru;
977 	scb->dma_direction = DMA_BIDIRECTIONAL;
995 		pthru->numsgelements = mega_build_sglist(adapter, scb,
1006  * @scb: our scsi control block
1015 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb,
1021 	epthru = scb->epthru;
1041 	scb->dma_direction = DMA_BIDIRECTIONAL;
1058 		epthru->numsgelements = mega_build_sglist(adapter, scb,
1069 	scb_t *scb;
1075 		scb = list_entry(pos, scb_t, list);
1077 		if( !(scb->state & SCB_ISSUED) ) {
1079 			if( issue_scb(adapter, scb) != 0 )
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)
1114 	memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1117 	mbox->m_out.cmdid = scb->idx;	/* Set cmdid */
1143 	scb->state |= SCB_ISSUED;
1174  * Issue a scb in synchronous and non-interrupt mode
1422 	scb_t	*scb;
1429 	 * and free the scb.
1443 			scb = &adapter->int_scb;
1444 			cmd = scb->cmd;
1446 			list_del_init(&scb->list);
1447 			scb->state = SCB_FREE;
1452 			scb = &adapter->scb_list[cmdid];
1457 			if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1459 					"Id %d, scb->state:%x, scsi cmd:%p\n",
1460 					cmdid, scb->state, scb->cmd);
1468 			if( scb->state & SCB_ABORT ) {
1472 					scb->idx);
1474 				scb->cmd->result = (DID_ABORT << 16);
1476 				list_add_tail(SCSI_LIST(scb->cmd),
1479 				mega_free_scb(adapter, scb);
1487 			if( scb->state & SCB_RESET ) {
1491 					scb->idx);
1493 				scb->cmd->result = (DID_RESET << 16);
1495 				list_add_tail(SCSI_LIST(scb->cmd),
1498 				mega_free_scb (adapter, scb);
1503 			cmd = scb->cmd;
1504 			pthru = scb->pthru;
1505 			epthru = scb->epthru;
1506 			mbox = (mbox_t *)scb->raw_mbox;
1632 		mega_free_scb(adapter, scb);
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)
1664 	switch( scb->dma_type ) {
1670 		scsi_dma_unmap(scb->cmd);
1679 	list_del_init(&scb->list);
1681 	/* Link the scb back into free list */
1682 	scb->state = SCB_FREE;
1683 	scb->cmd = NULL;
1685 	list_add(&scb->list, &adapter->free_list);
1709 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1716 	cmd = scb->cmd;
1725 	scb->dma_type = MEGA_SGLIST;
1733 		scb->dma_h_bulkdata = sg_dma_address(sg);
1734 		*buf = (u32)scb->dma_h_bulkdata;
1741 			scb->sgl64[idx].address = sg_dma_address(sg);
1742 			*len += scb->sgl64[idx].length = sg_dma_len(sg);
1744 			scb->sgl[idx].address = sg_dma_address(sg);
1745 			*len += scb->sgl[idx].length = sg_dma_len(sg);
1750 	*buf = scb->sgl_dma_addr;
1800 	scb_t	*scb;
1805 		scb = &adapter->scb_list[i];
1807 		if( scb->sgl64 ) {
1810 					  scb->sgl64, scb->sgl_dma_addr);
1812 			scb->sgl64 = NULL;
1815 		if( scb->pthru ) {
1817 					  sizeof(mega_passthru), scb->pthru,
1818 					  scb->pthru_dma_addr);
1820 			scb->pthru = NULL;
1823 		if( scb->epthru ) {
1826 					  scb->epthru, scb->epthru_dma_addr);
1828 			scb->epthru = NULL;
1926 	scb_t			*scb;
1941 		scb = list_entry(pos, scb_t, list);
1943 		if (!cmd || scb->cmd == cmd) { /* Found command */
1945 			scb->state |= aor;
1953 			if( scb->state & SCB_ISSUED ) {
1958 					scb->idx);
1969 				 scb->idx);
1970 			mega_free_scb(adapter, scb);
2848  * Allocate memory for the various pointers in the scb structures:
2855 	scb_t	*scb;
2860 		scb = &adapter->scb_list[i];
2862 		scb->sgl64 = NULL;
2863 		scb->sgl = NULL;
2864 		scb->pthru = NULL;
2865 		scb->epthru = NULL;
2870 		scb = &adapter->scb_list[i];
2872 		scb->idx = i;
2874 		scb->sgl64 = dma_alloc_coherent(&adapter->dev->dev,
2876 						&scb->sgl_dma_addr, GFP_KERNEL);
2878 		scb->sgl = (mega_sglist *)scb->sgl64;
2880 		if( !scb->sgl ) {
2886 		scb->pthru = dma_alloc_coherent(&adapter->dev->dev,
2888 						&scb->pthru_dma_addr, GFP_KERNEL);
2890 		if( !scb->pthru ) {
2896 		scb->epthru = dma_alloc_coherent(&adapter->dev->dev,
2898 						 &scb->epthru_dma_addr, GFP_KERNEL);
2900 		if( !scb->epthru ) {
2908 		scb->dma_type = MEGA_DMA_TYPE_NONE;
2915 		scb->state = SCB_FREE;
2916 		scb->cmd = NULL;
2917 		list_add(&scb->list, &adapter->free_list);
3766 	scb_t *scb;
3794 			scb = list_entry(pos, scb_t, list);
3795 			if (scb->pthru->logdrv < 0x80 )
3796 				scb->pthru->logdrv += 0x80;
4047 	scb_t	*scb;
4057 	scb = &adapter->int_scb;
4058 	memset(scb, 0, sizeof(scb_t));
4060 	scb->idx = CMDID_INT_CMDS;
4061 	scb->state |= SCB_ACTIVE | SCB_PENDQ;
4063 	memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4069 		scb->pthru = pthru;
4072 	list_add_tail(&scb->list, &adapter->pending_list);