add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/scsi/aha152x.c
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@@ -1,17 +1,7 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /* aha152x.c -- Adaptec AHA-152x driver
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  * Author: Jürgen E. Fischer, fischer@norbit.de
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  * Copyright 1993-2004 Jürgen E. Fischer
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms of the GNU General Public License as published by the
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- * Free Software Foundation; either version 2, or (at your option) any
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- * later version.
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- *
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- * This program is distributed in the hope that it will be useful, but
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- * WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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- * General Public License for more details.
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- *
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  *
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  * $Id: aha152x.c,v 2.7 2004/01/24 11:42:59 fischer Exp $
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  *
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@@ -228,10 +218,9 @@
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  * Revision 0.0  1993/08/14  19:54:25  root
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  * empty function bodies; detect() works.
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  *
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- *
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  **************************************************************************
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- see Documentation/scsi/aha152x.txt for configuration details
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+ see Documentation/scsi/aha152x.rst for configuration details
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  **************************************************************************/
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@@ -269,7 +258,7 @@
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 /* DEFINES */
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 /* For PCMCIA cards, always use AUTOCONF */
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-#if defined(PCMCIA) || defined(MODULE)
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+#if defined(AHA152X_PCMCIA) || defined(MODULE)
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 #if !defined(AUTOCONF)
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 #define AUTOCONF
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 #endif
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@@ -297,7 +286,7 @@
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 #define DELAY_DEFAULT 1000
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-#if defined(PCMCIA)
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+#if defined(AHA152X_PCMCIA)
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 #define IRQ_MIN 0
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 #define IRQ_MAX 16
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 #else
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@@ -328,7 +317,7 @@
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 MODULE_DESCRIPTION(AHA152X_REVID);
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 MODULE_LICENSE("GPL");
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-#if !defined(PCMCIA)
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+#if !defined(AHA152X_PCMCIA)
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 #if defined(MODULE)
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 static int io[] = {0, 0};
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 module_param_hw_array(io, int, ioport, NULL, 0);
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@@ -391,7 +380,7 @@
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 MODULE_DEVICE_TABLE(isapnp, id_table);
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 #endif /* ISAPNP */
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-#endif /* !PCMCIA */
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+#endif /* !AHA152X_PCMCIA */
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 static struct scsi_host_template aha152x_driver_template;
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@@ -863,7 +852,7 @@
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 	if (shpnt->irq)
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 		free_irq(shpnt->irq, shpnt);
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-#if !defined(PCMCIA)
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+#if !defined(AHA152X_PCMCIA)
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 	if (shpnt->io_port)
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 		release_region(shpnt->io_port, IO_RANGE);
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 #endif
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@@ -948,7 +937,6 @@
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 	   SCp.ptr              : buffer pointer
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 	   SCp.this_residual    : buffer length
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 	   SCp.buffer           : next buffer
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-	   SCp.buffers_residual : left buffers in list
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 	   SCp.phase            : current state of the command */
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 	if ((phase & resetting) || !scsi_sglist(SCpnt)) {
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@@ -956,13 +944,11 @@
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 		SCpnt->SCp.this_residual = 0;
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 		scsi_set_resid(SCpnt, 0);
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 		SCpnt->SCp.buffer           = NULL;
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-		SCpnt->SCp.buffers_residual = 0;
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 	} else {
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 		scsi_set_resid(SCpnt, scsi_bufflen(SCpnt));
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 		SCpnt->SCp.buffer           = scsi_sglist(SCpnt);
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 		SCpnt->SCp.ptr              = SG_ADDRESS(SCpnt->SCp.buffer);
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 		SCpnt->SCp.this_residual    = SCpnt->SCp.buffer->length;
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-		SCpnt->SCp.buffers_residual = scsi_sg_count(SCpnt) - 1;
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 	}
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 	DO_LOCK(flags);
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@@ -1263,7 +1249,7 @@
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 				       "aha152x: unable to verify geometry for disk with >1GB.\n"
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 				       "         Using default translation. Please verify yourself.\n"
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 				       "         Perhaps you need to enable extended translation in the driver.\n"
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-				       "         See Documentation/scsi/aha152x.txt for details.\n");
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+				       "         See Documentation/scsi/aha152x.rst for details.\n");
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 			}
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 		} else {
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 			info_array[0] = info[0];
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@@ -2030,10 +2016,9 @@
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 				}
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 				if (CURRENT_SC->SCp.this_residual == 0 &&
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-				    CURRENT_SC->SCp.buffers_residual > 0) {
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+				    !sg_is_last(CURRENT_SC->SCp.buffer)) {
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 					/* advance to next buffer */
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-					CURRENT_SC->SCp.buffers_residual--;
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-					CURRENT_SC->SCp.buffer++;
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+					CURRENT_SC->SCp.buffer = sg_next(CURRENT_SC->SCp.buffer);
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 					CURRENT_SC->SCp.ptr           = SG_ADDRESS(CURRENT_SC->SCp.buffer);
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 					CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length;
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 				}
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@@ -2045,8 +2030,7 @@
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 				    fifodata, GETPORT(FIFOSTAT));
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 			SETPORT(DMACNTRL0, ENDMA|_8BIT);
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 			while(fifodata>0) {
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-				int data;
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-				data=GETPORT(DATAPORT);
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+				GETPORT(DATAPORT);
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 				fifodata--;
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 				DATA_LEN++;
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 			}
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@@ -2136,10 +2120,10 @@
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 			CMD_INC_RESID(CURRENT_SC, -2 * data_count);
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 		}
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-		if(CURRENT_SC->SCp.this_residual==0 && CURRENT_SC->SCp.buffers_residual>0) {
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+		if (CURRENT_SC->SCp.this_residual == 0 &&
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+		    !sg_is_last(CURRENT_SC->SCp.buffer)) {
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 			/* advance to next buffer */
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-			CURRENT_SC->SCp.buffers_residual--;
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-			CURRENT_SC->SCp.buffer++;
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+			CURRENT_SC->SCp.buffer = sg_next(CURRENT_SC->SCp.buffer);
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 			CURRENT_SC->SCp.ptr           = SG_ADDRESS(CURRENT_SC->SCp.buffer);
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 			CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length;
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 		}
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@@ -2158,22 +2142,26 @@
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 static void datao_end(struct Scsi_Host *shpnt)
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 {
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 	if(TESTLO(DMASTAT, DFIFOEMP)) {
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-		int data_count = (DATA_LEN - scsi_get_resid(CURRENT_SC)) -
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-			GETSTCNT();
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+		u32 datao_cnt = GETSTCNT();
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+		int datao_out = DATA_LEN - scsi_get_resid(CURRENT_SC);
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+		int done;
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+		struct scatterlist *sg = scsi_sglist(CURRENT_SC);
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-		CMD_INC_RESID(CURRENT_SC, data_count);
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+		CMD_INC_RESID(CURRENT_SC, datao_out - datao_cnt);
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-		data_count -= CURRENT_SC->SCp.ptr -
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-			SG_ADDRESS(CURRENT_SC->SCp.buffer);
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-		while(data_count>0) {
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-			CURRENT_SC->SCp.buffer--;
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-			CURRENT_SC->SCp.buffers_residual++;
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-			data_count -= CURRENT_SC->SCp.buffer->length;
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+		done = scsi_bufflen(CURRENT_SC) - scsi_get_resid(CURRENT_SC);
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+		/* Locate the first SG entry not yet sent */
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+		while (done > 0 && !sg_is_last(sg)) {
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+			if (done < sg->length)
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+				break;
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+			done -= sg->length;
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+			sg = sg_next(sg);
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 		}
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-		CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer) -
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-			data_count;
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-		CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length +
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-			data_count;
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+
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+		CURRENT_SC->SCp.buffer = sg;
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+		CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer) + done;
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+		CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length -
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+			done;
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 	}
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 	SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
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@@ -2501,7 +2489,7 @@
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 	seq_printf(m, "); resid=%d; residual=%d; buffers=%d; phase |",
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 		scsi_get_resid(ptr), ptr->SCp.this_residual,
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-		ptr->SCp.buffers_residual);
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+		sg_nents(ptr->SCp.buffer) - 1);
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 	if (ptr->SCp.phase & not_issued)
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 		seq_puts(m, "not issued|");
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@@ -2920,11 +2908,11 @@
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 	.can_queue			= 1,
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 	.this_id			= 7,
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 	.sg_tablesize			= SG_ALL,
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-	.use_clustering			= DISABLE_CLUSTERING,
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+	.dma_boundary			= PAGE_SIZE - 1,
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 	.slave_alloc			= aha152x_adjust_queue,
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 };
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-#if !defined(PCMCIA)
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+#if !defined(AHA152X_PCMCIA)
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 static int setup_count;
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 static struct aha152x_setup setup[2];
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@@ -3379,17 +3367,15 @@
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 	setup[setup_count].synchronous = ints[0] >= 6 ? ints[6] : 1;
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 	setup[setup_count].delay       = ints[0] >= 7 ? ints[7] : DELAY_DEFAULT;
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 	setup[setup_count].ext_trans   = ints[0] >= 8 ? ints[8] : 0;
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-	if (ints[0] > 8) {                                                /*}*/
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+	if (ints[0] > 8)
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 		printk(KERN_NOTICE "aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>"
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 		       "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>]]]]]]]\n");
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-	} else {
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+	else
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 		setup_count++;
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-		return 0;
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-	}
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 	return 1;
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 }
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 __setup("aha152x=", aha152x_setup);
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 #endif
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-#endif /* !PCMCIA */
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+#endif /* !AHA152X_PCMCIA */