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authorJames Bottomley <James.Bottomley@HansenPartnership.com>2008-01-03 12:27:16 -0600
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-02-07 18:02:42 -0600
commit642978beb48331db1bafde0262eee33f658cfc39 (patch)
tree92305bcbd3aabce5d314bb0621ca602979965b42 /drivers/scsi/mac_esp.c
parentda19d2f53269210adfa9aa5a163a9fad8dc63d27 (diff)
downloadop-kernel-dev-642978beb48331db1bafde0262eee33f658cfc39.zip
op-kernel-dev-642978beb48331db1bafde0262eee33f658cfc39.tar.gz
[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>
Diffstat (limited to 'drivers/scsi/mac_esp.c')
-rw-r--r--drivers/scsi/mac_esp.c751
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");
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