From 642978beb48331db1bafde0262eee33f658cfc39 Mon Sep 17 00:00:00 2001 From: James Bottomley Date: Thu, 3 Jan 2008 12:27:16 -0600 Subject: [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 Cc: Linux/m68k Signed-off-by: James Bottomley --- drivers/scsi/mac_esp.c | 751 ------------------------------------------------- 1 file changed, 751 deletions(-) delete mode 100644 drivers/scsi/mac_esp.c (limited to 'drivers/scsi/mac_esp.c') diff --git a/drivers/scsi/mac_esp.c b/drivers/scsi/mac_esp.c deleted file mode 100644 index bcb49021b7e..00000000000 --- 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "scsi.h" -#include -#include "NCR53C9x.h" - -#include - -#include -#include -#include -#include -#include - -#include - -#include - -/* #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=,,,,,,, - * 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"); -- cgit v1.2.3