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Commit 76f13b93 authored by Finn Thain's avatar Finn Thain Committed by Christoph Hellwig
Browse files

ncr5380: Cleanup TAG_NEXT and TAG_NONE macros 



Both atari_NCR5380.c and sun3_NCR5380.c core drivers #undef TAG_NONE and
then redefine it. But the original definition is unused because NCR5380.c
lacks support for tagged queueing. So just define it once.

The TAG_NEXT macro only appears in the arguments to NCR5380_select() calls.
But that routine doesn't use its tag argument as the tag was already
assigned in NCR5380_main(). So remove the unused argument and the macro.

Signed-off-by: default avatarFinn Thain <fthain@telegraphics.com.au>
Reviewed-by: default avatarHannes Reinecke <hare@suse.de>
Tested-by: default avatarMichael Schmitz <schmitzmic@gmail.com>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent 4d3d2a54

drivers/scsi/NCR5380.c

+13 −16
Original line number Diff line number Diff line
@@ -1073,14 +1073,14 @@ static void NCR5380_main(struct work_struct *work) 
					hostdata->selecting = NULL;

					/* RvC: have to preset this to indicate a new command is being performed */



					if (!NCR5380_select(instance, tmp,

					/*

					 * REQUEST SENSE commands are issued without tagged

					 * queueing, even on SCSI-II devices because the

					 * contingent allegiance condition exists for the

					 * entire unit.

					 */

							    (tmp->cmnd[0] == REQUEST_SENSE) ? TAG_NONE : TAG_NEXT)) {



					if (!NCR5380_select(instance, tmp)) {

						break;

					} else {

						LIST(tmp, hostdata->issue_queue);
@@ -1097,7 +1097,7 @@ static void NCR5380_main(struct work_struct *work) 
		if (hostdata->selecting) {

			tmp = (Scsi_Cmnd *) hostdata->selecting;

			/* Selection will drop and retake the lock */

			if (!NCR5380_select(instance, tmp, (tmp->cmnd[0] == REQUEST_SENSE) ? TAG_NONE : TAG_NEXT)) {

			if (!NCR5380_select(instance, tmp)) {

				/* Ok ?? */

			} else {

				/* RvC: device failed, so we wait a long time
@@ -1246,17 +1246,14 @@ static void collect_stats(struct NCR5380_hostdata *hostdata, Scsi_Cmnd * cmd) 




/* 

 * Function : int NCR5380_select (struct Scsi_Host *instance, Scsi_Cmnd *cmd, 

 *      int tag);

 * Function : int NCR5380_select (struct Scsi_Host *instance, Scsi_Cmnd *cmd)

 *

 * Purpose : establishes I_T_L or I_T_L_Q nexus for new or existing command,

 *      including ARBITRATION, SELECTION, and initial message out for 

 *      IDENTIFY and queue messages. 

 *

 * Inputs : instance - instantiation of the 5380 driver on which this 

 *      target lives, cmd - SCSI command to execute, tag - set to TAG_NEXT for 

 *      new tag, TAG_NONE for untagged queueing, otherwise set to the tag for 

 *      the command that is presently connected.

 *      target lives, cmd - SCSI command to execute.

 * 

 * Returns : -1 if selection could not execute for some reason,

 *      0 if selection succeeded or failed because the target
@@ -1278,7 +1275,7 @@ static void collect_stats(struct NCR5380_hostdata *hostdata, Scsi_Cmnd * cmd) 
 *	Locks: caller holds hostdata lock in IRQ mode

 */

 

static int NCR5380_select(struct Scsi_Host *instance, Scsi_Cmnd * cmd, int tag) 

static int NCR5380_select(struct Scsi_Host *instance, Scsi_Cmnd *cmd)

{

	NCR5380_local_declare();

	struct NCR5380_hostdata *hostdata = (struct NCR5380_hostdata *) instance->hostdata;
@@ -2773,7 +2770,7 @@ static int NCR5380_abort(Scsi_Cmnd * cmd) { 
		if (cmd == tmp) {

			dprintk(NDEBUG_ABORT, "scsi%d : aborting disconnected command.\n", instance->host_no);



			if (NCR5380_select(instance, cmd, (int) cmd->tag))

			if (NCR5380_select(instance, cmd))

				return FAILED;

			dprintk(NDEBUG_ABORT, "scsi%d : nexus reestablished.\n", instance->host_no);

drivers/scsi/NCR5380.h

+4 −7
Original line number Diff line number Diff line
@@ -224,14 +224,11 @@ 
#define DISCONNECT_LONG		2



/* 

 * These are "special" values for the tag parameter passed to NCR5380_select.

 * "Special" value for the (unsigned char) command tag, to indicate

 * I_T_L nexus instead of I_T_L_Q.

 */



#define TAG_NEXT	-1	/* Use next free tag */

#define TAG_NONE	-2	/* 

				 * Establish I_T_L nexus instead of I_T_L_Q

				 * even on SCSI-II devices.

				 */

#define TAG_NONE	0xff



/*

 * These are "special" values for the irq and dma_channel fields of the
@@ -323,7 +320,7 @@ static irqreturn_t NCR5380_intr(int irq, void *dev_id); 
static void NCR5380_main(struct work_struct *work);

static void __maybe_unused NCR5380_print_options(struct Scsi_Host *instance);

static void NCR5380_reselect(struct Scsi_Host *instance);

static int NCR5380_select(struct Scsi_Host *instance, Scsi_Cmnd * cmd, int tag);

static int NCR5380_select(struct Scsi_Host *instance, Scsi_Cmnd *cmd);

#if defined(PSEUDO_DMA) || defined(REAL_DMA) || defined(REAL_DMA_POLL)

static int NCR5380_transfer_dma(struct Scsi_Host *instance, unsigned char *phase, int *count, unsigned char **data);

#endif

drivers/scsi/atari_NCR5380.c

+5 −14
Original line number Diff line number Diff line
@@ -316,10 +316,6 @@ static struct scsi_host_template *the_template = NULL; 
 * important: the tag bit must be cleared before 'nr_allocated' is decreased.

 */



/* -1 for TAG_NONE is not possible with unsigned char cmd->tag */

#undef TAG_NONE

#define TAG_NONE 0xff



typedef struct {

	DECLARE_BITMAP(allocated, MAX_TAGS);

	int nr_allocated;
@@ -1118,9 +1114,7 @@ static void NCR5380_main(struct work_struct *work) 
#ifdef SUPPORT_TAGS

					cmd_get_tag(tmp, tmp->cmnd[0] != REQUEST_SENSE);

#endif

					if (!NCR5380_select(instance, tmp,

					    (tmp->cmnd[0] == REQUEST_SENSE) ? TAG_NONE :

					    TAG_NEXT)) {

					if (!NCR5380_select(instance, tmp)) {

						falcon_dont_release--;

						/* release if target did not response! */

						falcon_release_lock_if_possible(hostdata);
@@ -1351,17 +1345,14 @@ static void collect_stats(struct NCR5380_hostdata* hostdata, Scsi_Cmnd *cmd) 
#endif



/*

 * Function : int NCR5380_select (struct Scsi_Host *instance, Scsi_Cmnd *cmd,

 *	int tag);

 * Function : int NCR5380_select (struct Scsi_Host *instance, Scsi_Cmnd *cmd)

 *

 * Purpose : establishes I_T_L or I_T_L_Q nexus for new or existing command,

 *	including ARBITRATION, SELECTION, and initial message out for

 *	IDENTIFY and queue messages.

 *

 * Inputs : instance - instantiation of the 5380 driver on which this

 *	target lives, cmd - SCSI command to execute, tag - set to TAG_NEXT for

 *	new tag, TAG_NONE for untagged queueing, otherwise set to the tag for

 *	the command that is presently connected.

 *	target lives, cmd - SCSI command to execute.

 *

 * Returns : -1 if selection could not execute for some reason,

 *	0 if selection succeeded or failed because the target
@@ -1381,7 +1372,7 @@ static void collect_stats(struct NCR5380_hostdata* hostdata, Scsi_Cmnd *cmd) 
 *		cmd->result host byte set to DID_BAD_TARGET.

 */



static int NCR5380_select(struct Scsi_Host *instance, Scsi_Cmnd *cmd, int tag)

static int NCR5380_select(struct Scsi_Host *instance, Scsi_Cmnd *cmd)

{

	SETUP_HOSTDATA(instance);

	unsigned char tmp[3], phase;
@@ -2757,7 +2748,7 @@ int NCR5380_abort(Scsi_Cmnd *cmd) 
			local_irq_restore(flags);

			dprintk(NDEBUG_ABORT, "scsi%d: aborting disconnected command.\n", HOSTNO);



			if (NCR5380_select(instance, cmd, (int)cmd->tag))

			if (NCR5380_select(instance, cmd))

				return FAILED;



			dprintk(NDEBUG_ABORT, "scsi%d: nexus reestablished.\n", HOSTNO);

drivers/scsi/sun3_NCR5380.c

+5 −14
Original line number Diff line number Diff line
@@ -305,10 +305,6 @@ static struct scsi_host_template *the_template = NULL; 
 * important: the tag bit must be cleared before 'nr_allocated' is decreased.

 */



/* -1 for TAG_NONE is not possible with unsigned char cmd->tag */

#undef TAG_NONE

#define TAG_NONE 0xff



/* For the m68k, the number of bits in 'allocated' must be a multiple of 32! */

#if (MAX_TAGS % 32) != 0

#error "MAX_TAGS must be a multiple of 32!"
@@ -1057,9 +1053,7 @@ static void NCR5380_main (struct work_struct *bl) 
#ifdef SUPPORT_TAGS

		    cmd_get_tag( tmp, tmp->cmnd[0] != REQUEST_SENSE );

#endif

		    if (!NCR5380_select(instance, tmp, 

			    (tmp->cmnd[0] == REQUEST_SENSE) ? TAG_NONE : 

			    TAG_NEXT)) {

		    if (!NCR5380_select(instance, tmp)) {

			break;

		    } else {

			local_irq_disable();
@@ -1292,16 +1286,14 @@ static void collect_stats(struct NCR5380_hostdata *hostdata, 


/* 

 * Function : int NCR5380_select(struct Scsi_Host *instance,

 * 				 struct scsi_cmnd *cmd,	int tag);

 *				 struct scsi_cmnd *cmd)

 *

 * Purpose : establishes I_T_L or I_T_L_Q nexus for new or existing command,

 *	including ARBITRATION, SELECTION, and initial message out for 

 *	IDENTIFY and queue messages. 

 *

 * Inputs : instance - instantiation of the 5380 driver on which this 

 * 	target lives, cmd - SCSI command to execute, tag - set to TAG_NEXT for 

 *	new tag, TAG_NONE for untagged queueing, otherwise set to the tag for 

 *	the command that is presently connected.

 *	target lives, cmd - SCSI command to execute.

 * 

 * Returns : -1 if selection could not execute for some reason,

 *	0 if selection succeeded or failed because the target
@@ -1321,8 +1313,7 @@ static void collect_stats(struct NCR5380_hostdata *hostdata, 
 *		cmd->result host byte set to DID_BAD_TARGET.

 */



static int NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd,

			  int tag)

static int NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd)

{

    SETUP_HOSTDATA(instance);

    unsigned char tmp[3], phase;
@@ -2735,7 +2726,7 @@ static int NCR5380_abort(struct scsi_cmnd *cmd) 
            local_irq_restore(flags);

	    dprintk(NDEBUG_ABORT, "scsi%d: aborting disconnected command.\n", HOSTNO);

  

            if (NCR5380_select (instance, cmd, (int) cmd->tag)) 

	    if (NCR5380_select(instance, cmd))

		return FAILED;



	    dprintk(NDEBUG_ABORT, "scsi%d: nexus reestablished.\n", HOSTNO);