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/oktagon_esp.c | 606 --------------------------------------------- 1 file changed, 606 deletions(-) delete mode 100644 drivers/scsi/oktagon_esp.c (limited to 'drivers/scsi/oktagon_esp.c') diff --git a/drivers/scsi/oktagon_esp.c b/drivers/scsi/oktagon_esp.c deleted file mode 100644 index 8e5eadb..0000000 --- a/drivers/scsi/oktagon_esp.c +++ /dev/null @@ -1,606 +0,0 @@ -/* - * Oktagon_esp.c -- Driver for bsc Oktagon - * - * Written by Carsten Pluntke 1998 - * - * Based on cyber_esp.c - */ - - -#if defined(CONFIG_AMIGA) || defined(CONFIG_APUS) -#define USE_BOTTOM_HALF -#endif - -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - - -#include "scsi.h" -#include -#include "NCR53C9x.h" - -#include -#include -#include -#include - -#ifdef USE_BOTTOM_HALF -#include -#include -#endif - -/* The controller registers can be found in the Z2 config area at these - * offsets: - */ -#define OKTAGON_ESP_ADDR 0x03000 -#define OKTAGON_DMA_ADDR 0x01000 - - -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, __u32 vaddress, int length); -static void dma_init_write(struct NCR_ESP *esp, __u32 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 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_irq_exit(struct NCR_ESP *esp); -static void dma_invalidate(struct NCR_ESP *esp); - -static void dma_mmu_get_scsi_one(struct NCR_ESP *,Scsi_Cmnd *); -static void dma_mmu_get_scsi_sgl(struct NCR_ESP *,Scsi_Cmnd *); -static void dma_mmu_release_scsi_one(struct NCR_ESP *,Scsi_Cmnd *); -static void dma_mmu_release_scsi_sgl(struct NCR_ESP *,Scsi_Cmnd *); -static void dma_advance_sg(Scsi_Cmnd *); -static int oktagon_notify_reboot(struct notifier_block *this, unsigned long code, void *x); - -#ifdef USE_BOTTOM_HALF -static void dma_commit(struct work_struct *unused); - -long oktag_to_io(long *paddr, long *addr, long len); -long oktag_from_io(long *addr, long *paddr, long len); - -static DECLARE_WORK(tq_fake_dma, dma_commit); - -#define DMA_MAXTRANSFER 0x8000 - -#else - -/* - * No bottom half. Use transfer directly from IRQ. Find a narrow path - * between too much IRQ overhead and clogging the IRQ for too long. - */ - -#define DMA_MAXTRANSFER 0x1000 - -#endif - -static struct notifier_block oktagon_notifier = { - oktagon_notify_reboot, - NULL, - 0 -}; - -static long *paddress; -static long *address; -static long len; -static long dma_on; -static int direction; -static struct NCR_ESP *current_esp; - - -static volatile unsigned char cmd_buffer[16]; - /* This is where all commands are put - * before they are trasfered to the ESP chip - * via PIO. - */ - -/***************************************************************** Detection */ -int oktagon_esp_detect(struct scsi_host_template *tpnt) -{ - struct NCR_ESP *esp; - struct zorro_dev *z = NULL; - unsigned long address; - struct ESP_regs *eregs; - - while ((z = zorro_find_device(ZORRO_PROD_BSC_OKTAGON_2008, z))) { - unsigned long board = z->resource.start; - if (request_mem_region(board+OKTAGON_ESP_ADDR, - sizeof(struct ESP_regs), "NCR53C9x")) { - /* - * It is a SCSI controller. - * Hardwire Host adapter to SCSI ID 7 - */ - - address = (unsigned long)ZTWO_VADDR(board); - eregs = (struct ESP_regs *)(address + OKTAGON_ESP_ADDR); - - /* This line was 5 lines lower */ - esp = esp_allocate(tpnt, (void *)board + OKTAGON_ESP_ADDR, 0); - - /* we have to shift the registers only one bit for oktagon */ - esp->shift = 1; - - esp_write(eregs->esp_cfg1, (ESP_CONFIG1_PENABLE | 7)); - udelay(5); - if (esp_read(eregs->esp_cfg1) != (ESP_CONFIG1_PENABLE | 7)) - return 0; /* Bail out if address did not hold data */ - - /* Do command transfer with programmed I/O */ - esp->do_pio_cmds = 1; - - /* Required 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 = &dma_init_read; - esp->dma_init_write = &dma_init_write; - esp->dma_ints_off = &dma_ints_off; - esp->dma_ints_on = &dma_ints_on; - esp->dma_irq_p = &dma_irq_p; - esp->dma_ports_p = &dma_ports_p; - esp->dma_setup = &dma_setup; - - /* Optional functions */ - esp->dma_barrier = 0; - esp->dma_drain = 0; - esp->dma_invalidate = &dma_invalidate; - esp->dma_irq_entry = 0; - esp->dma_irq_exit = &dma_irq_exit; - esp->dma_led_on = &dma_led_on; - esp->dma_led_off = &dma_led_off; - esp->dma_poll = 0; - esp->dma_reset = 0; - - esp->dma_mmu_get_scsi_one = &dma_mmu_get_scsi_one; - esp->dma_mmu_get_scsi_sgl = &dma_mmu_get_scsi_sgl; - esp->dma_mmu_release_scsi_one = &dma_mmu_release_scsi_one; - esp->dma_mmu_release_scsi_sgl = &dma_mmu_release_scsi_sgl; - esp->dma_advance_sg = &dma_advance_sg; - - /* SCSI chip speed */ - /* Looking at the quartz of the SCSI board... */ - esp->cfreq = 25000000; - - /* The DMA registers on the CyberStorm are mapped - * relative to the device (i.e. in the same Zorro - * I/O block). - */ - esp->dregs = (void *)(address + OKTAGON_DMA_ADDR); - - paddress = (long *) esp->dregs; - - /* ESP register base */ - esp->eregs = eregs; - - /* Set the command buffer */ - esp->esp_command = (volatile unsigned char*) cmd_buffer; - - /* Yes, the virtual address. See below. */ - esp->esp_command_dvma = (__u32) cmd_buffer; - - esp->irq = IRQ_AMIGA_PORTS; - request_irq(IRQ_AMIGA_PORTS, esp_intr, IRQF_SHARED, - "BSC Oktagon SCSI", esp->ehost); - - /* Figure out our scsi ID on the bus */ - esp->scsi_id = 7; - - /* We don't have a differential SCSI-bus. */ - esp->diff = 0; - - esp_initialize(esp); - - printk("ESP_Oktagon Driver 1.1" -#ifdef USE_BOTTOM_HALF - " [BOTTOM_HALF]" -#else - " [IRQ]" -#endif - " registered.\n"); - printk("ESP: Total of %d ESP hosts found, %d actually in use.\n", nesps,esps_in_use); - esps_running = esps_in_use; - current_esp = esp; - register_reboot_notifier(&oktagon_notifier); - return esps_in_use; - } - } - return 0; -} - - -/* - * On certain configurations the SCSI equipment gets confused on reboot, - * so we have to reset it then. - */ - -static int -oktagon_notify_reboot(struct notifier_block *this, unsigned long code, void *x) -{ - struct NCR_ESP *esp; - - if((code == SYS_DOWN || code == SYS_HALT) && (esp = current_esp)) - { - esp_bootup_reset(esp,esp->eregs); - udelay(500); /* Settle time. Maybe unnecessary. */ - } - return NOTIFY_DONE; -} - - - -#ifdef USE_BOTTOM_HALF - - -/* - * The bsc Oktagon controller has no real DMA, so we have to do the 'DMA - * transfer' in the interrupt (Yikes!) or use a bottom half to not to clutter - * IRQ's for longer-than-good. - * - * FIXME - * BIG PROBLEM: 'len' is usually the buffer length, not the expected length - * of the data. So DMA may finish prematurely, further reads lead to - * 'machine check' on APUS systems (don't know about m68k systems, AmigaOS - * deliberately ignores the bus faults) and a normal copy-loop can't - * be exited prematurely just at the right moment by the dma_invalidate IRQ. - * So do it the hard way, write an own copier in assembler and - * catch the exception. - * -- Carsten - */ - - -static void dma_commit(struct work_struct *unused) -{ - long wait,len2,pos; - struct NCR_ESP *esp; - - ESPDATA(("Transfer: %ld bytes, Address 0x%08lX, Direction: %d\n", - len,(long) address,direction)); - dma_ints_off(current_esp); - - pos = 0; - wait = 1; - if(direction) /* write? (memory to device) */ - { - while(len > 0) - { - len2 = oktag_to_io(paddress, address+pos, len); - if(!len2) - { - if(wait > 1000) - { - printk("Expedited DMA exit (writing) %ld\n",len); - break; - } - mdelay(wait); - wait *= 2; - } - pos += len2; - len -= len2*sizeof(long); - } - } else { - while(len > 0) - { - len2 = oktag_from_io(address+pos, paddress, len); - if(!len2) - { - if(wait > 1000) - { - printk("Expedited DMA exit (reading) %ld\n",len); - break; - } - mdelay(wait); - wait *= 2; - } - pos += len2; - len -= len2*sizeof(long); - } - } - - /* to make esp->shift work */ - esp=current_esp; - -#if 0 - len2 = (esp_read(current_esp->eregs->esp_tclow) & 0xff) | - ((esp_read(current_esp->eregs->esp_tcmed) & 0xff) << 8); - - /* - * Uh uh. If you see this, len and transfer count registers were out of - * sync. That means really serious trouble. - */ - - if(len2) - printk("Eeeek!! Transfer count still %ld!\n",len2); -#endif - - /* - * Normally we just need to exit and wait for the interrupt to come. - * But at least one device (my Microtek ScanMaker 630) regularly mis- - * calculates the bytes it should send which is really ugly because - * it locks up the SCSI bus if not accounted for. - */ - - if(!(esp_read(current_esp->eregs->esp_status) & ESP_STAT_INTR)) - { - long len = 100; - long trash[10]; - - /* - * Interrupt bit was not set. Either the device is just plain lazy - * so we give it a 10 ms chance or... - */ - while(len-- && (!(esp_read(current_esp->eregs->esp_status) & ESP_STAT_INTR))) - udelay(100); - - - if(!(esp_read(current_esp->eregs->esp_status) & ESP_STAT_INTR)) - { - /* - * So we think that the transfer count is out of sync. Since we - * have all we want we are happy and can ditch the trash. - */ - - len = DMA_MAXTRANSFER; - - while(len-- && (!(esp_read(current_esp->eregs->esp_status) & ESP_STAT_INTR))) - oktag_from_io(trash,paddress,2); - - if(!(esp_read(current_esp->eregs->esp_status) & ESP_STAT_INTR)) - { - /* - * Things really have gone wrong. If we leave the system in that - * state, the SCSI bus is locked forever. I hope that this will - * turn the system in a more or less running state. - */ - printk("Device is bolixed, trying bus reset...\n"); - esp_bootup_reset(current_esp,current_esp->eregs); - } - } - } - - ESPDATA(("Transfer_finale: do_data_finale should come\n")); - - len = 0; - dma_on = 0; - dma_ints_on(current_esp); -} - -#endif - -/************************************************************* DMA Functions */ -static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count) -{ - /* Since the CyberStorm DMA is fully dedicated to the ESP chip, - * the number of bytes sent (to the ESP chip) equals the number - * of bytes in the FIFO - there is no buffering in the DMA controller. - * XXXX Do I read this right? It is from host to ESP, right? - */ - return fifo_count; -} - -static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp) -{ - unsigned long sz = sp->SCp.this_residual; - if(sz > DMA_MAXTRANSFER) - sz = DMA_MAXTRANSFER; - return sz; -} - -static void dma_dump_state(struct NCR_ESP *esp) -{ -} - -/* - * What the f$@& is this? - * - * Some SCSI devices (like my Microtek ScanMaker 630 scanner) want to transfer - * more data than requested. How much? Dunno. So ditch the bogus data into - * the sink, hoping the device will advance to the next phase sooner or later. - * - * -- Carsten - */ - -static long oktag_eva_buffer[16]; /* The data sink */ - -static void oktag_check_dma(void) -{ - struct NCR_ESP *esp; - - esp=current_esp; - if(!len) - { - address = oktag_eva_buffer; - len = 2; - /* esp_do_data sets them to zero like len */ - esp_write(current_esp->eregs->esp_tclow,2); - esp_write(current_esp->eregs->esp_tcmed,0); - } -} - -static void dma_init_read(struct NCR_ESP *esp, __u32 vaddress, int length) -{ - /* Zorro is noncached, everything else done using processor. */ - /* cache_clear(addr, length); */ - - if(dma_on) - panic("dma_init_read while dma process is initialized/running!\n"); - direction = 0; - address = (long *) vaddress; - current_esp = esp; - len = length; - oktag_check_dma(); - dma_on = 1; -} - -static void dma_init_write(struct NCR_ESP *esp, __u32 vaddress, int length) -{ - /* cache_push(addr, length); */ - - if(dma_on) - panic("dma_init_write while dma process is initialized/running!\n"); - direction = 1; - address = (long *) vaddress; - current_esp = esp; - len = length; - oktag_check_dma(); - dma_on = 1; -} - -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); -} - -static int dma_irq_p(struct NCR_ESP *esp) -{ - /* It's important to check the DMA IRQ bit in the correct way! */ - return (esp_read(esp->eregs->esp_status) & ESP_STAT_INTR); -} - -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) -{ - return ((amiga_custom.intenar) & IF_PORTS); -} - -static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write) -{ - /* On the Sparc, DMA_ST_WRITE means "move data from device to memory" - * so when (write) is true, it actually means READ! - */ - if(write){ - dma_init_read(esp, addr, count); - } else { - dma_init_write(esp, addr, count); - } -} - -/* - * IRQ entry when DMA transfer is ready to be started - */ - -static void dma_irq_exit(struct NCR_ESP *esp) -{ -#ifdef USE_BOTTOM_HALF - if(dma_on) - { - schedule_work(&tq_fake_dma); - } -#else - while(len && !dma_irq_p(esp)) - { - if(direction) - *paddress = *address++; - else - *address++ = *paddress; - len -= (sizeof(long)); - } - len = 0; - dma_on = 0; -#endif -} - -/* - * IRQ entry when DMA has just finished - */ - -static void dma_invalidate(struct NCR_ESP *esp) -{ -} - -/* - * Since the processor does the data transfer we have to use the custom - * mmu interface to pass the virtual address, not the physical. - */ - -void dma_mmu_get_scsi_one(struct NCR_ESP *esp, Scsi_Cmnd *sp) -{ - sp->SCp.ptr = - sp->request_buffer; -} - -void dma_mmu_get_scsi_sgl(struct NCR_ESP *esp, Scsi_Cmnd *sp) -{ - sp->SCp.ptr = sg_virt(sp->SCp.buffer); -} - -void dma_mmu_release_scsi_one(struct NCR_ESP *esp, Scsi_Cmnd *sp) -{ -} - -void dma_mmu_release_scsi_sgl(struct NCR_ESP *esp, Scsi_Cmnd *sp) -{ -} - -void dma_advance_sg(Scsi_Cmnd *sp) -{ - sp->SCp.ptr = sg_virt(sp->SCp.buffer); -} - - -#define HOSTS_C - -int oktagon_esp_release(struct Scsi_Host *instance) -{ -#ifdef MODULE - unsigned long address = (unsigned long)((struct NCR_ESP *)instance->hostdata)->edev; - esp_release(); - release_mem_region(address, sizeof(struct ESP_regs)); - free_irq(IRQ_AMIGA_PORTS, esp_intr); - unregister_reboot_notifier(&oktagon_notifier); -#endif - return 1; -} - - -static struct scsi_host_template driver_template = { - .proc_name = "esp-oktagon", - .proc_info = &esp_proc_info, - .name = "BSC Oktagon SCSI", - .detect = oktagon_esp_detect, - .slave_alloc = esp_slave_alloc, - .slave_destroy = esp_slave_destroy, - .release = oktagon_esp_release, - .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 = ENABLE_CLUSTERING -}; - - -#include "scsi_module.c" - -MODULE_LICENSE("GPL"); -- cgit v1.1