[SCSI] remove m68k NCR53C9x based drivers

These drivers depend on the deprecated NCR53C9X core and need to be converted
to the esp_scsi core.

Acked-by: Boaz Harrosh <bharrosh@panasas.com>
Cc: Linux/m68k <linux-m68k@vger.kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 0 insertions, 751 deletions

diff --git a/drivers/scsi/mac_esp.c b/drivers/scsi/mac_esp.c
deleted file mode 100644
index bcb4902..0000000
--- a/drivers/scsi/mac_esp.c
+++ /dev/null
@@ -1,751 +0,0 @@
-/*
- * 68k mac 53c9[46] scsi driver
- *
- * copyright (c) 1998, David Weis weisd3458@uni.edu
- *
- * debugging on Quadra 800 and 660AV Michael Schmitz, Dave Kilzer 7/98
- *
- * based loosely on cyber_esp.c
- */
-
-/* these are unused for now */
-#define myreadl(addr) (*(volatile unsigned int *) (addr))
-#define mywritel(b, addr) ((*(volatile unsigned int *) (addr)) = (b))
-
-
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/ctype.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <asm/io.h>
-
-#include <asm/setup.h>
-#include <asm/irq.h>
-#include <asm/macints.h>
-#include <asm/machw.h>
-#include <asm/mac_via.h>
-
-#include <asm/pgtable.h>
-
-#include <asm/macintosh.h>
-
-/* #define DEBUG_MAC_ESP */
-
-extern void esp_handle(struct NCR_ESP *esp);
-extern void mac_esp_intr(int irq, void *dev_id);
-
-static int  dma_bytes_sent(struct NCR_ESP * esp, int fifo_count);
-static int  dma_can_transfer(struct NCR_ESP * esp, Scsi_Cmnd *sp);
-static void dma_dump_state(struct NCR_ESP * esp);
-static void dma_init_read(struct NCR_ESP * esp, char * vaddress, int length);
-static void dma_init_write(struct NCR_ESP * esp, char * vaddress, int length);
-static void dma_ints_off(struct NCR_ESP * esp);
-static void dma_ints_on(struct NCR_ESP * esp);
-static int  dma_irq_p(struct NCR_ESP * esp);
-static int  dma_irq_p_quick(struct NCR_ESP * esp);
-static void dma_led_off(struct NCR_ESP * esp);
-static void dma_led_on(struct NCR_ESP *esp);
-static int  dma_ports_p(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP * esp, __u32 addr, int count, int write);
-static void dma_setup_quick(struct NCR_ESP * esp, __u32 addr, int count, int write);
-
-static int esp_dafb_dma_irq_p(struct NCR_ESP * espdev);
-static int esp_iosb_dma_irq_p(struct NCR_ESP * espdev);
-
-static volatile unsigned char cmd_buffer[16];
-				/* This is where all commands are put
-				 * before they are transferred to the ESP chip
-				 * via PIO.
-				 */
-
-static int esp_initialized = 0;
-
-static int setup_num_esps = -1;
-static int setup_disconnect = -1;
-static int setup_nosync = -1;
-static int setup_can_queue = -1;
-static int setup_cmd_per_lun = -1;
-static int setup_sg_tablesize = -1;
-#ifdef SUPPORT_TAGS
-static int setup_use_tagged_queuing = -1;
-#endif
-static int setup_hostid = -1;
-
-/*
- * Experimental ESP inthandler; check macints.c to make sure dev_id is 
- * set up properly!
- */
-
-void mac_esp_intr(int irq, void *dev_id)
-{
-	struct NCR_ESP *esp = (struct NCR_ESP *) dev_id;
-	int irq_p = 0;
-
-	/* Handle the one ESP interrupt showing at this IRQ level. */
-	if(((esp)->irq & 0xff) == irq) {
-	/*
-	 * Debug ..
-	 */
-		irq_p = esp->dma_irq_p(esp);
-	 	printk("mac_esp: irq_p %x current %p disconnected %p\n",
-	 		irq_p, esp->current_SC, esp->disconnected_SC);
-	 		
-		/*
-		 * Mac: if we're here, it's an ESP interrupt for sure!
-		 */
-		if((esp->current_SC || esp->disconnected_SC)) {
-			esp->dma_ints_off(esp);
-
-			ESPIRQ(("I%d(", esp->esp_id));
-			esp_handle(esp);
-			ESPIRQ((")"));
-
-			esp->dma_ints_on(esp);
-		}
-	}
-}
-
-/*
- * Debug hooks; use for playing with the interrupt flag testing and interrupt
- * acknowledge on the various machines
- */
-
-void scsi_esp_polled(int irq, void *dev_id)
-{
-	if (esp_initialized == 0)
-		return;
-
-	mac_esp_intr(irq, dev_id);
-}
-
-void fake_intr(int irq, void *dev_id)
-{
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: got irq\n");
-#endif
-
-	mac_esp_intr(irq, dev_id);
-}
-
-irqreturn_t fake_drq(int irq, void *dev_id)
-{
-	printk("mac_esp: got drq\n");
-	return IRQ_HANDLED;
-}
-
-#define DRIVER_SETUP
-
-/*
- * Function : mac_esp_setup(char *str)
- *
- * Purpose : booter command line initialization of the overrides array,
- *
- * Inputs : str - parameters, separated by commas.
- *
- * Currently unused in the new driver; need to add settable parameters to the 
- * detect function.
- *
- */
-
-static int __init mac_esp_setup(char *str) {
-#ifdef DRIVER_SETUP
-	/* Format of mac53c9x parameter is:
-	 *   mac53c9x=<num_esps>,<disconnect>,<nosync>,<can_queue>,<cmd_per_lun>,<sg_tablesize>,<hostid>,<use_tags>
-	 * Negative values mean don't change.
-	 */
-	
-	char *this_opt;
-	long opt;
-
-	this_opt = strsep (&str, ",");
-	if(this_opt) {
-		opt = simple_strtol( this_opt, NULL, 0 );
-
-		if (opt >= 0 && opt <= 2)
-			setup_num_esps = opt;
-		else if (opt > 2)
-			printk( "mac_esp_setup: invalid number of hosts %ld !\n", opt );
-
-		this_opt = strsep (&str, ",");
-	}
-	if(this_opt) {
-		opt = simple_strtol( this_opt, NULL, 0 );
-	
-		if (opt > 0)
-			setup_disconnect = opt;
-
-		this_opt = strsep (&str, ",");
-	}
-	if(this_opt) {
-		opt = simple_strtol( this_opt, NULL, 0 );
-
-		if (opt >= 0)
-			setup_nosync = opt;
-
-		this_opt = strsep (&str, ",");
-	}
-	if(this_opt) {
-		opt = simple_strtol( this_opt, NULL, 0 );
-
-		if (opt > 0)
-			setup_can_queue = opt;
-
-		this_opt = strsep (&str, ",");
-	}
-	if(this_opt) {
-		opt = simple_strtol( this_opt, NULL, 0 );
-
-		if (opt > 0)
-			setup_cmd_per_lun = opt;
-
-		this_opt = strsep (&str, ",");
-	}
-	if(this_opt) {
-		opt = simple_strtol( this_opt, NULL, 0 );
-
-		if (opt >= 0) {
-			setup_sg_tablesize = opt;
-			/* Must be <= SG_ALL (255) */
-			if (setup_sg_tablesize > SG_ALL)
-				setup_sg_tablesize = SG_ALL;
-		}
-
-		this_opt = strsep (&str, ",");
-	}
-	if(this_opt) {
-		opt = simple_strtol( this_opt, NULL, 0 );
-
-		/* Must be between 0 and 7 */
-		if (opt >= 0 && opt <= 7)
-			setup_hostid = opt;
-		else if (opt > 7)
-			printk( "mac_esp_setup: invalid host ID %ld !\n", opt);
-
-		this_opt = strsep (&str, ",");
-	}
-#ifdef SUPPORT_TAGS
-	if(this_opt) {
-		opt = simple_strtol( this_opt, NULL, 0 );
-		if (opt >= 0)
-			setup_use_tagged_queuing = !!opt;
-	}
-#endif
-#endif
-	return 1; 
-}
-
-__setup("mac53c9x=", mac_esp_setup);
-
-
-/*
- * ESP address 'detection'
- */
-
-unsigned long get_base(int chip_num)
-{
-	/*
-	 * using the chip_num and mac model, figure out where the
-	 * chips are mapped
-	 */
-
-	unsigned long io_base = 0x50f00000;
-	unsigned int second_offset = 0x402;
-	unsigned long scsi_loc = 0;
-
-	switch (macintosh_config->scsi_type) {
-
-	/* 950, 900, 700 */
-	case MAC_SCSI_QUADRA2:
-		scsi_loc =  io_base + 0xf000 + ((chip_num == 0) ? 0 : second_offset);
-		break;
-
-	/* av's */
-	case MAC_SCSI_QUADRA3:
-		scsi_loc = io_base + 0x18000 + ((chip_num == 0) ? 0 : second_offset);
-		break;
-
-	/* most quadra/centris models are like this */	
-	case MAC_SCSI_QUADRA:
-		scsi_loc = io_base + 0x10000;
-		break;
-
-	default:
-		printk("mac_esp: get_base: hit default!\n");
-		scsi_loc = io_base + 0x10000;
-		break;
-
-	} /* switch */
-
-	printk("mac_esp: io base at 0x%lx\n", scsi_loc);
-
-	return scsi_loc;
-}
-
-/*
- * Model dependent ESP setup
- */
-
-int mac_esp_detect(struct scsi_host_template * tpnt)
-{
-	int quick = 0;
-	int chipnum, chipspresent = 0;
-#if 0
-	unsigned long timeout;
-#endif
-
-	if (esp_initialized > 0)
-		return -ENODEV;
-
-	/* what do we have in this machine... */
-	if (MACHW_PRESENT(MAC_SCSI_96)) {
-		chipspresent ++;
-	}
-
-	if (MACHW_PRESENT(MAC_SCSI_96_2)) {
-		chipspresent ++;
-	}
-
-	/* number of ESPs present ? */
-	if (setup_num_esps >= 0) {
-	  if (chipspresent >= setup_num_esps)
-	    chipspresent = setup_num_esps;
-	  else
-	    printk("mac_esp_detect: num_hosts detected %d setup %d \n",
-		   chipspresent, setup_num_esps);
-	}
-
-	/* TODO: add disconnect / nosync flags */
-
-	/* setup variables */
-	tpnt->can_queue =
-	  (setup_can_queue > 0) ? setup_can_queue : 7;
-	tpnt->cmd_per_lun =
-	  (setup_cmd_per_lun > 0) ? setup_cmd_per_lun : 1;
-	tpnt->sg_tablesize = 
-	  (setup_sg_tablesize >= 0) ? setup_sg_tablesize : SG_ALL;
-
-	if (setup_hostid >= 0)
-	  tpnt->this_id = setup_hostid;
-	else {
-	  /* use 7 as default */
-	  tpnt->this_id = 7;
-	}
-
-#ifdef SUPPORT_TAGS
-	if (setup_use_tagged_queuing < 0)
-		setup_use_tagged_queuing = DEFAULT_USE_TAGGED_QUEUING;
-#endif
-
-	for (chipnum = 0; chipnum < chipspresent; chipnum ++) {
-		struct NCR_ESP * esp;
-
-		esp = esp_allocate(tpnt, NULL, 0);
-		esp->eregs = (struct ESP_regs *) get_base(chipnum);
-
-		esp->dma_irq_p = &esp_dafb_dma_irq_p;
-		if (chipnum == 0) {
-
-			if (macintosh_config->scsi_type == MAC_SCSI_QUADRA) {
-				/* most machines except those below :-) */
-				quick = 1;
-				esp->dma_irq_p = &esp_iosb_dma_irq_p;
-			} else if (macintosh_config->scsi_type == MAC_SCSI_QUADRA3) {
-				/* mostly av's */
-				quick = 0;
-			} else {
-				/* q950, 900, 700 */
-				quick = 1;
-				out_be32(0xf9800024, 0x1d1);
-				esp->dregs = (void *) 0xf9800024;
-			}
-
-		} else { /* chipnum */
-
-			quick = 1;
-			out_be32(0xf9800028, 0x1d1);
-			esp->dregs = (void *) 0xf9800028;
-
-		} /* chipnum == 0 */
-
-		/* use pio for command bytes; pio for message/data: TBI */
-		esp->do_pio_cmds = 1;
-
-		/* Set the command buffer */
-		esp->esp_command = (volatile unsigned char*) cmd_buffer;
-		esp->esp_command_dvma = (__u32) cmd_buffer;
-
-		/* various functions */
-		esp->dma_bytes_sent = &dma_bytes_sent;
-		esp->dma_can_transfer = &dma_can_transfer;
-		esp->dma_dump_state = &dma_dump_state;
-		esp->dma_init_read = NULL;
-		esp->dma_init_write = NULL;
-		esp->dma_ints_off = &dma_ints_off;
-		esp->dma_ints_on = &dma_ints_on;
-
-		esp->dma_ports_p = &dma_ports_p;
-
-
-		/* Optional functions */
-		esp->dma_barrier = NULL;
-		esp->dma_drain = NULL;
-		esp->dma_invalidate = NULL;
-		esp->dma_irq_entry = NULL;
-		esp->dma_irq_exit = NULL;
-		esp->dma_led_on = NULL;
-		esp->dma_led_off = NULL;
-		esp->dma_poll = NULL;
-		esp->dma_reset = NULL;
-
-		/* SCSI chip speed */
-		/* below esp->cfreq = 40000000; */
-
-
-		if (quick) {
-			/* 'quick' means there's handshake glue logic like in the 5380 case */
-			esp->dma_setup = &dma_setup_quick;
-		} else {
-			esp->dma_setup = &dma_setup;
-		}
-
-		if (chipnum == 0) {
-
-			esp->irq = IRQ_MAC_SCSI;
-
-			request_irq(IRQ_MAC_SCSI, esp_intr, 0, "Mac ESP SCSI", esp->ehost);
-#if 0	/* conflicts with IOP ADB */
-			request_irq(IRQ_MAC_SCSIDRQ, fake_drq, 0, "Mac ESP DRQ", esp->ehost);
-#endif
-
-			if (macintosh_config->scsi_type == MAC_SCSI_QUADRA) {
-				esp->cfreq = 16500000;
-			} else {
-				esp->cfreq = 25000000;
-			}
-
-
-		} else { /* chipnum == 1 */
-
-			esp->irq = IRQ_MAC_SCSIDRQ;
-#if 0	/* conflicts with IOP ADB */
-			request_irq(IRQ_MAC_SCSIDRQ, esp_intr, 0, "Mac ESP SCSI 2", esp->ehost);
-#endif
-
-			esp->cfreq = 25000000;
-
-		}
-
-		if (quick) {
-			printk("esp: using quick version\n");
-		}
-
-		printk("esp: addr at 0x%p\n", esp->eregs);
-
-		esp->scsi_id = 7;
-		esp->diff = 0;
-
-		esp_initialize(esp);
-
-	} /* for chipnum */
-
-	if (chipspresent)
-		printk("\nmac_esp: %d esp controllers found\n", chipspresent);
-
-	esp_initialized = chipspresent;
-
-	return chipspresent;
-}
-
-static int mac_esp_release(struct Scsi_Host *shost)
-{
-	if (shost->irq)
-		free_irq(shost->irq, NULL);
-	if (shost->io_port && shost->n_io_port)
-		release_region(shost->io_port, shost->n_io_port);
-	scsi_unregister(shost);
-	return 0;
-}
-
-/*
- * I've been wondering what this is supposed to do, for some time. Talking 
- * to Allen Briggs: These machines have an extra register someplace where the
- * DRQ pin of the ESP can be monitored. That isn't useful for determining 
- * anything else (such as reselect interrupt or other magic) though. 
- * Maybe make the semantics should be changed like 
- * if (esp->current_SC)
- *	... check DRQ flag ...
- * else 
- *	... disconnected, check pending VIA interrupt ...
- *
- * There's a problem with using the dabf flag or mac_irq_pending() here: both
- * seem to return 1 even though no interrupt is currently pending, resulting
- * in esp_exec_cmd() holding off the next command, and possibly infinite loops
- * in esp_intr(). 
- * Short term fix: just use esp_status & ESP_STAT_INTR here, as long as we
- * use simple PIO. The DRQ status will be important when implementing pseudo
- * DMA mode (set up ESP transfer count, return, do a batch of bytes in PIO or 
- * 'hardware handshake' mode upon DRQ).
- * If you plan on changing this (i.e. to save the esp_status register access in 
- * favor of a VIA register access or a shadow register for the IFR), make sure
- * to try a debug version of this first to monitor what registers would be a good
- * indicator of the ESP interrupt.
- */
-
-static int esp_dafb_dma_irq_p(struct NCR_ESP * esp)
-{
-	unsigned int ret;
-	int sreg = esp_read(esp->eregs->esp_status);
-
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: esp_dafb_dma_irq_p dafb %d irq %d\n", 
-		readl(esp->dregs), mac_irq_pending(IRQ_MAC_SCSI));
-#endif
-
-	sreg &= ESP_STAT_INTR;
-
-	/*
-	 * maybe working; this is essentially what's used for iosb_dma_irq_p
-	 */
-	if (sreg)
-		return 1;
-	else
-		return 0;
-
-	/*
-	 * didn't work ...
-	 */
-#if 0
-	if (esp->current_SC)
-		ret = readl(esp->dregs) & 0x200;
-	else if (esp->disconnected_SC)
-		ret = 1; /* sreg ?? */
-	else
-		ret = mac_irq_pending(IRQ_MAC_SCSI);
-
-	return(ret);
-#endif
-
-}
-
-/*
- * See above: testing mac_irq_pending always returned 8 (SCSI IRQ) regardless 
- * of the actual ESP status.
- */
-
-static int esp_iosb_dma_irq_p(struct NCR_ESP * esp)
-{
-	int ret  = mac_irq_pending(IRQ_MAC_SCSI) || mac_irq_pending(IRQ_MAC_SCSIDRQ);
-	int sreg = esp_read(esp->eregs->esp_status);
-
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: dma_irq_p drq %d irq %d sreg %x curr %p disc %p\n", 
-		mac_irq_pending(IRQ_MAC_SCSIDRQ), mac_irq_pending(IRQ_MAC_SCSI), 
-		sreg, esp->current_SC, esp->disconnected_SC);
-#endif
-
-	sreg &= ESP_STAT_INTR;
-
-	if (sreg)
-		return (sreg);
-	else
-		return 0;
-}
-
-/*
- * This seems to be OK for PIO at least ... usually 0 after PIO.
- */
-
-static int dma_bytes_sent(struct NCR_ESP * esp, int fifo_count)
-{
-
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: dma bytes sent = %x\n", fifo_count);
-#endif
-
-	return fifo_count;
-}
-
-/*
- * dma_can_transfer is used to switch between DMA and PIO, if DMA (pseudo)
- * is ever implemented. Returning 0 here will use PIO.
- */
-
-static int dma_can_transfer(struct NCR_ESP * esp, Scsi_Cmnd * sp)
-{
-	unsigned long sz = sp->SCp.this_residual;
-#if 0	/* no DMA yet; make conditional */
-	if (sz > 0x10000000) {
-		sz = 0x10000000;
-	}
-	printk("mac_esp: dma can transfer = 0lx%x\n", sz);
-#else
-
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: pio to transfer = %ld\n", sz);
-#endif
-
-	sz = 0;
-#endif
-	return sz;
-}
-
-/*
- * Not yet ...
- */
-
-static void dma_dump_state(struct NCR_ESP * esp)
-{
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: dma_dump_state: called\n");
-#endif
-#if 0
-	ESPLOG(("esp%d: dma -- cond_reg<%02x>\n",
-		esp->esp_id, ((struct mac_dma_registers *)
-		(esp->dregs))->cond_reg));
-#endif
-}
-
-/*
- * DMA setup: should be used to set up the ESP transfer count for pseudo
- * DMA transfers; need a DRQ transfer function to do the actual transfer
- */
-
-static void dma_init_read(struct NCR_ESP * esp, char * vaddress, int length)
-{
-	printk("mac_esp: dma_init_read\n");
-}
-
-
-static void dma_init_write(struct NCR_ESP * esp, char * vaddress, int length)
-{
-	printk("mac_esp: dma_init_write\n");
-}
-
-
-static void dma_ints_off(struct NCR_ESP * esp)
-{
-	disable_irq(esp->irq);
-}
-
-
-static void dma_ints_on(struct NCR_ESP * esp)
-{
-	enable_irq(esp->irq);
-}
-
-/*
- * generic dma_irq_p(), unused
- */
-
-static int dma_irq_p(struct NCR_ESP * esp)
-{
-	int i = esp_read(esp->eregs->esp_status);
-
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: dma_irq_p status %d\n", i);
-#endif
-
-	return (i & ESP_STAT_INTR);
-}
-
-static int dma_irq_p_quick(struct NCR_ESP * esp)
-{
-	/*
-	 * Copied from iosb_dma_irq_p()
-	 */
-	int ret  = mac_irq_pending(IRQ_MAC_SCSI) || mac_irq_pending(IRQ_MAC_SCSIDRQ);
-	int sreg = esp_read(esp->eregs->esp_status);
-
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: dma_irq_p drq %d irq %d sreg %x curr %p disc %p\n", 
-		mac_irq_pending(IRQ_MAC_SCSIDRQ), mac_irq_pending(IRQ_MAC_SCSI), 
-		sreg, esp->current_SC, esp->disconnected_SC);
-#endif
-
-	sreg &= ESP_STAT_INTR;
-
-	if (sreg)
-		return (sreg);
-	else
-		return 0;
-
-}
-
-static void dma_led_off(struct NCR_ESP * esp)
-{
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: dma_led_off: called\n");
-#endif
-}
-
-
-static void dma_led_on(struct NCR_ESP * esp)
-{
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: dma_led_on: called\n");
-#endif
-}
-
-
-static int dma_ports_p(struct NCR_ESP * esp)
-{
-	return 0;
-}
-
-
-static void dma_setup(struct NCR_ESP * esp, __u32 addr, int count, int write)
-{
-
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: dma_setup\n");
-#endif
-
-	if (write) {
-		dma_init_read(esp, (char *) addr, count);
-	} else {
-		dma_init_write(esp, (char *) addr, count);
-	}
-}
-
-
-static void dma_setup_quick(struct NCR_ESP * esp, __u32 addr, int count, int write)
-{
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: dma_setup_quick\n");
-#endif
-}
-
-static struct scsi_host_template driver_template = {
-	.proc_name		= "mac_esp",
-	.name			= "Mac 53C9x SCSI",
-	.detect			= mac_esp_detect,
-	.slave_alloc		= esp_slave_alloc,
-	.slave_destroy		= esp_slave_destroy,
-	.release		= mac_esp_release,
-	.info			= esp_info,
-	.queuecommand		= esp_queue,
-	.eh_abort_handler	= esp_abort,
-	.eh_bus_reset_handler	= esp_reset,
-	.can_queue		= 7,
-	.this_id		= 7,
-	.sg_tablesize		= SG_ALL,
-	.cmd_per_lun		= 1,
-	.use_clustering		= DISABLE_CLUSTERING
-};
-
-
-#include "scsi_module.c"
-
-MODULE_LICENSE("GPL");