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Commit 63273134 authored by Kars de Jong's avatar Kars de Jong Committed by James Bottomley
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[SCSI] 53c700: m68k support for the 53c700 SCSI core 



Add m68k support to the 53c700 SCSI driver

Signed-off-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
parent cc78d30a

drivers/scsi/53c700.c

+10 −10
Original line number Diff line number Diff line
@@ -653,7 +653,6 @@ NCR_700_chip_setup(struct Scsi_Host *host) 
{

	struct NCR_700_Host_Parameters *hostdata = 

		(struct NCR_700_Host_Parameters *)host->hostdata[0];

	__u32 dcntl_extra = 0;

	__u8 min_period;

	__u8 min_xferp = (hostdata->chip710 ? NCR_710_MIN_XFERP : NCR_700_MIN_XFERP);
@@ -678,13 +677,14 @@ NCR_700_chip_setup(struct Scsi_Host *host) 
			        burst_disable = BURST_DISABLE;

			        break;

		}

		dcntl_extra = COMPAT_700_MODE;

		hostdata->dcntl_extra |= COMPAT_700_MODE;



		NCR_700_writeb(dcntl_extra, host, DCNTL_REG);

		NCR_700_writeb(hostdata->dcntl_extra, host, DCNTL_REG);

		NCR_700_writeb(burst_length | hostdata->dmode_extra,

			       host, DMODE_710_REG);

		NCR_700_writeb(burst_disable | (hostdata->differential ? 

						DIFF : 0), host, CTEST7_REG);

		NCR_700_writeb(burst_disable | hostdata->ctest7_extra |

			       (hostdata->differential ? DIFF : 0),

			       host, CTEST7_REG);

		NCR_700_writeb(BTB_TIMER_DISABLE, host, CTEST0_REG);

		NCR_700_writeb(FULL_ARBITRATION | ENABLE_PARITY | PARITY

			       | AUTO_ATN, host, SCNTL0_REG);
@@ -719,13 +719,13 @@ NCR_700_chip_setup(struct Scsi_Host *host) 
		 * of spec: sync divider 2, async divider 3 */

		DEBUG(("53c700: sync 2 async 3\n"));

		NCR_700_writeb(SYNC_DIV_2_0, host, SBCL_REG);

		NCR_700_writeb(ASYNC_DIV_3_0 | dcntl_extra, host, DCNTL_REG);

		NCR_700_writeb(ASYNC_DIV_3_0 | hostdata->dcntl_extra, host, DCNTL_REG);

		hostdata->sync_clock = hostdata->clock/2;

	} else	if(hostdata->clock > 50  && hostdata->clock <= 75) {

		/* sync divider 1.5, async divider 3 */

		DEBUG(("53c700: sync 1.5 async 3\n"));

		NCR_700_writeb(SYNC_DIV_1_5, host, SBCL_REG);

		NCR_700_writeb(ASYNC_DIV_3_0 | dcntl_extra, host, DCNTL_REG);

		NCR_700_writeb(ASYNC_DIV_3_0 | hostdata->dcntl_extra, host, DCNTL_REG);

		hostdata->sync_clock = hostdata->clock*2;

		hostdata->sync_clock /= 3;
@@ -733,18 +733,18 @@ NCR_700_chip_setup(struct Scsi_Host *host) 
		/* sync divider 1, async divider 2 */

		DEBUG(("53c700: sync 1 async 2\n"));

		NCR_700_writeb(SYNC_DIV_1_0, host, SBCL_REG);

		NCR_700_writeb(ASYNC_DIV_2_0 | dcntl_extra, host, DCNTL_REG);

		NCR_700_writeb(ASYNC_DIV_2_0 | hostdata->dcntl_extra, host, DCNTL_REG);

		hostdata->sync_clock = hostdata->clock;

	} else if(hostdata->clock > 25 && hostdata->clock <=37) {

		/* sync divider 1, async divider 1.5 */

		DEBUG(("53c700: sync 1 async 1.5\n"));

		NCR_700_writeb(SYNC_DIV_1_0, host, SBCL_REG);

		NCR_700_writeb(ASYNC_DIV_1_5 | dcntl_extra, host, DCNTL_REG);

		NCR_700_writeb(ASYNC_DIV_1_5 | hostdata->dcntl_extra, host, DCNTL_REG);

		hostdata->sync_clock = hostdata->clock;

	} else {

		DEBUG(("53c700: sync 1 async 1\n"));

		NCR_700_writeb(SYNC_DIV_1_0, host, SBCL_REG);

		NCR_700_writeb(ASYNC_DIV_1_0 | dcntl_extra, host, DCNTL_REG);

		NCR_700_writeb(ASYNC_DIV_1_0 | hostdata->dcntl_extra, host, DCNTL_REG);

		/* sync divider 1, async divider 1 */

		hostdata->sync_clock = hostdata->clock;

	}

drivers/scsi/53c700.h

+5 −0
Original line number Diff line number Diff line
@@ -177,6 +177,7 @@ struct NCR_700_command_slot { 
	__u8	state;

	#define NCR_700_FLAG_AUTOSENSE	0x01

	__u8	flags;

	__u8	pad1[2];	/* Needed for m68k where min alignment is 2 bytes */

	int	tag;

	__u32	resume_offset;

	struct scsi_cmnd *cmnd;
@@ -196,6 +197,8 @@ struct NCR_700_Host_Parameters { 
	void __iomem	*base;		/* the base for the port (copied to host) */

	struct device	*dev;

	__u32	dmode_extra;	/* adjustable bus settings */

	__u32	dcntl_extra;	/* adjustable bus settings */

	__u32	ctest7_extra;	/* adjustable bus settings */

	__u32	differential:1;	/* if we are differential */

#ifdef CONFIG_53C700_LE_ON_BE

	/* This option is for HP only.  Set it if your chip is wired for
@@ -352,6 +355,7 @@ struct NCR_700_Host_Parameters { 
#define		SEL_TIMEOUT_DISABLE	0x10 /* 710 only */

#define         DFP                     0x08

#define         EVP                     0x04

#define         CTEST7_TT1              0x02

#define		DIFF			0x01

#define CTEST6_REG                      0x1A

#define	TEMP_REG			0x1C
@@ -385,6 +389,7 @@ struct NCR_700_Host_Parameters { 
#define		SOFTWARE_RESET		0x01

#define		COMPAT_700_MODE		0x01

#define 	SCRPTS_16BITS		0x20

#define		EA_710			0x20

#define		ASYNC_DIV_2_0		0x00

#define		ASYNC_DIV_1_5		0x40

#define		ASYNC_DIV_1_0		0x80

drivers/scsi/Kconfig

+5 −8
Original line number Diff line number Diff line
@@ -1006,6 +1006,11 @@ config SCSI_STEX 
	  To compile this driver as a module, choose M here: the

	  module will be called stex.



config 53C700_BE_BUS

	bool

	depends on M68K

	default y



config SCSI_SYM53C8XX_2

	tristate "SYM53C8XX Version 2 SCSI support"

	depends on PCI && SCSI
@@ -1727,14 +1732,6 @@ config BVME6000_SCSI 
	  SCSI controller chip.  Almost everyone using one of these boards

	  will want to say Y to this question.



config SCSI_NCR53C7xx_FAST

	bool "allow FAST-SCSI [10MHz]"

	depends on SCSI_AMIGA7XX || MVME16x_SCSI || BVME6000_SCSI

	help

	  This will enable 10MHz FAST-SCSI transfers with your host

	  adapter. Some systems have problems with that speed, so it's safest

	  to say N here.



config SUN3_SCSI

	tristate "Sun3 NCR5380 SCSI"

	depends on SUN3 && SCSI