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Commit 2338545a authored by Boaz Harrosh's avatar Boaz Harrosh Committed by James Bottomley
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[SCSI] aha152x: use data accessors and !use_sg cleanup 



And finally this is the regular !use_sg cleanup
and use of data accessors.

Signed-off-by: default avatarBoaz Harrosh <bharrosh@panasas.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
parent 45333ffa

drivers/scsi/aha152x.c

+47 −44
Original line number Diff line number Diff line
@@ -322,6 +322,12 @@ static LIST_HEAD(aha152x_host_list); 
                        (cmd) ? ((cmd)->device->id & 0x0f) : -1, \

			(cmd) ? ((cmd)->device->lun & 0x07) : -1



static inline void

CMD_INC_RESID(struct scsi_cmnd *cmd, int inc)

{

	scsi_set_resid(cmd, scsi_get_resid(cmd) + inc);

}



#define DELAY_DEFAULT 1000



#if defined(PCMCIA)
@@ -975,13 +981,13 @@ static int aha152x_internal_queue(Scsi_Cmnd *SCpnt, struct completion *complete, 
#if defined(AHA152X_DEBUG)

	if (HOSTDATA(shpnt)->debug & debug_queue) {

		printk(INFO_LEAD "queue: %p; cmd_len=%d pieces=%d size=%u cmnd=",

		       CMDINFO(SCpnt), SCpnt, SCpnt->cmd_len, SCpnt->use_sg, SCpnt->request_bufflen);

		       CMDINFO(SCpnt), SCpnt, SCpnt->cmd_len,

		       scsi_sg_count(SCpnt), scsi_bufflen(SCpnt));

		__scsi_print_command(SCpnt->cmnd);

	}

#endif



	SCpnt->scsi_done	= done;

	SCpnt->resid 		= SCpnt->request_bufflen;

	SCpnt->SCp.phase	= not_issued | phase;

	SCpnt->SCp.Status	= 0x1; /* Ilegal status by SCSI standard */

	SCpnt->SCp.Message	= 0;
@@ -1011,30 +1017,24 @@ static int aha152x_internal_queue(Scsi_Cmnd *SCpnt, struct completion *complete, 
	   SCp.buffers_residual : left buffers in list

	   SCp.phase            : current state of the command */



	if (phase & (check_condition|resetting)) {

	if ((phase & (check_condition|resetting)) || !scsi_sglist(SCpnt)) {

		if (phase & check_condition) {

			SCpnt->SCp.ptr           = SCpnt->sense_buffer;

			SCpnt->SCp.this_residual = sizeof(SCpnt->sense_buffer);

			SCpnt->resid             = sizeof(SCpnt->sense_buffer);

			scsi_set_resid(SCpnt, sizeof(SCpnt->sense_buffer));

		} else {

			SCpnt->SCp.ptr           = NULL;

			SCpnt->SCp.this_residual = 0;

			SCpnt->resid             = 0;

			scsi_set_resid(SCpnt, 0);

		}

		SCpnt->SCp.buffer           = NULL;

		SCpnt->SCp.buffers_residual = 0;

	} else {

	if (SCpnt->use_sg) {

		SCpnt->SCp.buffer           = (struct scatterlist *) SCpnt->request_buffer;

		scsi_set_resid(SCpnt, scsi_bufflen(SCpnt));

		SCpnt->SCp.buffer           = scsi_sglist(SCpnt);

		SCpnt->SCp.ptr              = SG_ADDRESS(SCpnt->SCp.buffer);

		SCpnt->SCp.this_residual    = SCpnt->SCp.buffer->length;

		SCpnt->SCp.buffers_residual = SCpnt->use_sg - 1;

	} else {

		SCpnt->SCp.ptr              = (char *) SCpnt->request_buffer;

		SCpnt->SCp.this_residual    = SCpnt->request_bufflen;

		SCpnt->SCp.buffer           = NULL;

		SCpnt->SCp.buffers_residual = 0;

	}

		SCpnt->SCp.buffers_residual = scsi_sg_count(SCpnt) - 1;

	}



	DO_LOCK(flags);
@@ -1525,8 +1525,8 @@ static void busfree_run(struct Scsi_Host *shpnt) 
			/* target sent DISCONNECT */

			DPRINTK(debug_selection, DEBUG_LEAD "target disconnected at %d/%d\n",

				CMDINFO(CURRENT_SC),

				CURRENT_SC->resid,

				CURRENT_SC->request_bufflen);

				scsi_get_resid(CURRENT_SC),

				scsi_bufflen(CURRENT_SC));

#if defined(AHA152X_STAT)

			HOSTDATA(shpnt)->disconnections++;

#endif
@@ -1564,7 +1564,7 @@ static void busfree_run(struct Scsi_Host *shpnt) 
			/* restore old command */

			memcpy(cmd->cmnd, sc->aha_orig_cmnd, sizeof(cmd->cmnd));

			cmd->cmd_len = sc->aha_orig_cmd_len;

			cmd->resid = sc->aha_orig_resid;

			scsi_set_resid(cmd, sc->aha_orig_resid);



			cmd->SCp.Status = SAM_STAT_CHECK_CONDITION;
@@ -1594,7 +1594,7 @@ static void busfree_run(struct Scsi_Host *shpnt) 
				memcpy(sc->aha_orig_cmnd, ptr->cmnd,

				                            sizeof(ptr->cmnd));

				sc->aha_orig_cmd_len = ptr->cmd_len;

				sc->aha_orig_resid = ptr->resid;

				sc->aha_orig_resid = scsi_get_resid(ptr);



				ptr->cmnd[0]         = REQUEST_SENSE;

				ptr->cmnd[1]         = 0;
@@ -2179,7 +2179,8 @@ static void datai_init(struct Scsi_Host *shpnt) 
	DATA_LEN=0;

	DPRINTK(debug_datai,

		DEBUG_LEAD "datai_init: request_bufflen=%d resid=%d\n",

		CMDINFO(CURRENT_SC), CURRENT_SC->request_bufflen, CURRENT_SC->resid);

		CMDINFO(CURRENT_SC), scsi_bufflen(CURRENT_SC),

		scsi_get_resid(CURRENT_SC));

}



static void datai_run(struct Scsi_Host *shpnt)
@@ -2292,11 +2293,12 @@ static void datai_run(struct Scsi_Host *shpnt) 


static void datai_end(struct Scsi_Host *shpnt)

{

	CURRENT_SC->resid -= GETSTCNT();

	CMD_INC_RESID(CURRENT_SC, -GETSTCNT());



	DPRINTK(debug_datai,

		DEBUG_LEAD "datai_end: request_bufflen=%d resid=%d stcnt=%d\n",

		CMDINFO(CURRENT_SC), CURRENT_SC->request_bufflen, CURRENT_SC->resid, GETSTCNT());

		CMDINFO(CURRENT_SC), scsi_bufflen(CURRENT_SC),

		scsi_get_resid(CURRENT_SC), GETSTCNT());



	SETPORT(SXFRCTL0, CH1|CLRSTCNT);

	SETPORT(DMACNTRL0, 0);
@@ -2317,11 +2319,12 @@ static void datao_init(struct Scsi_Host *shpnt) 
	SETPORT(SIMODE0, 0);

	SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE );



	DATA_LEN = CURRENT_SC->resid;

	DATA_LEN = scsi_get_resid(CURRENT_SC);



	DPRINTK(debug_datao,

		DEBUG_LEAD "datao_init: request_bufflen=%d; resid=%d\n",

		CMDINFO(CURRENT_SC), CURRENT_SC->request_bufflen, CURRENT_SC->resid);

		CMDINFO(CURRENT_SC), scsi_bufflen(CURRENT_SC),

		scsi_get_resid(CURRENT_SC));

}



static void datao_run(struct Scsi_Host *shpnt)
@@ -2345,7 +2348,7 @@ static void datao_run(struct Scsi_Host *shpnt) 
			SETPORT(DMACNTRL0,WRITE_READ|ENDMA|_8BIT);

			SETPORT(DATAPORT, *CURRENT_SC->SCp.ptr++);

			CURRENT_SC->SCp.this_residual--;

			CURRENT_SC->resid--;

			CMD_INC_RESID(CURRENT_SC, -1);

			SETPORT(DMACNTRL0,WRITE_READ|ENDMA);

		}
@@ -2354,7 +2357,7 @@ static void datao_run(struct Scsi_Host *shpnt) 
			outsw(DATAPORT, CURRENT_SC->SCp.ptr, data_count);

			CURRENT_SC->SCp.ptr           += 2 * data_count;

			CURRENT_SC->SCp.this_residual -= 2 * data_count;

			CURRENT_SC->resid             -= 2 * data_count;

			CMD_INC_RESID(CURRENT_SC, -2 * data_count);

	  	}



		if(CURRENT_SC->SCp.this_residual==0 && CURRENT_SC->SCp.buffers_residual>0) {
@@ -2380,35 +2383,34 @@ static void datao_run(struct Scsi_Host *shpnt) 
static void datao_end(struct Scsi_Host *shpnt)

{

	if(TESTLO(DMASTAT, DFIFOEMP)) {

		int data_count = (DATA_LEN - CURRENT_SC->resid) - GETSTCNT();

		int data_count = (DATA_LEN - scsi_get_resid(CURRENT_SC)) -

		                                                    GETSTCNT();



		DPRINTK(debug_datao, DEBUG_LEAD "datao: %d bytes to resend (%d written, %d transferred)\n",

			CMDINFO(CURRENT_SC),

			data_count,

			DATA_LEN-CURRENT_SC->resid,

			DATA_LEN - scsi_get_resid(CURRENT_SC),

			GETSTCNT());



		CURRENT_SC->resid += data_count;

		CMD_INC_RESID(CURRENT_SC, data_count);



		if(CURRENT_SC->use_sg) {

			data_count -= CURRENT_SC->SCp.ptr - SG_ADDRESS(CURRENT_SC->SCp.buffer);

		data_count -= CURRENT_SC->SCp.ptr -

		                             SG_ADDRESS(CURRENT_SC->SCp.buffer);

		while(data_count>0) {

			CURRENT_SC->SCp.buffer--;

			CURRENT_SC->SCp.buffers_residual++;

			data_count -= CURRENT_SC->SCp.buffer->length;

		}

			CURRENT_SC->SCp.ptr           = SG_ADDRESS(CURRENT_SC->SCp.buffer) - data_count;

			CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length + data_count;

		} else {

			CURRENT_SC->SCp.ptr           -= data_count;

			CURRENT_SC->SCp.this_residual += data_count;

		}

		CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer) -

		                                                     data_count;

		CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length +

		                                                     data_count;

	}



	DPRINTK(debug_datao, DEBUG_LEAD "datao_end: request_bufflen=%d; resid=%d; stcnt=%d\n",

		CMDINFO(CURRENT_SC),

		CURRENT_SC->request_bufflen,

		CURRENT_SC->resid,

		scsi_bufflen(CURRENT_SC),

		scsi_get_resid(CURRENT_SC),

		GETSTCNT());



	SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
@@ -2935,7 +2937,7 @@ static void show_command(Scsi_Cmnd *ptr) 
	__scsi_print_command(ptr->cmnd);



	printk(KERN_DEBUG "); request_bufflen=%d; resid=%d; phase |",

	       ptr->request_bufflen, ptr->resid);

	       scsi_bufflen(ptr), scsi_get_resid(ptr));



	if (ptr->SCp.phase & not_issued)

		printk("not issued|");
@@ -3005,7 +3007,8 @@ static int get_command(char *pos, Scsi_Cmnd * ptr) 
		SPRINTF("0x%02x ", ptr->cmnd[i]);



	SPRINTF("); resid=%d; residual=%d; buffers=%d; phase |",

		ptr->resid, ptr->SCp.this_residual, ptr->SCp.buffers_residual);

		scsi_get_resid(ptr), ptr->SCp.this_residual,

		ptr->SCp.buffers_residual);



	if (ptr->SCp.phase & not_issued)

		SPRINTF("not issued|");