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Diffstat (limited to 'drivers/scsi/fastlane.c')
-rw-r--r--drivers/scsi/fastlane.c421
1 files changed, 0 insertions, 421 deletions
diff --git a/drivers/scsi/fastlane.c b/drivers/scsi/fastlane.c
deleted file mode 100644
index 4266a2139b5f..000000000000
--- a/drivers/scsi/fastlane.c
+++ /dev/null
@@ -1,421 +0,0 @@
-/* fastlane.c: Driver for Phase5's Fastlane SCSI Controller.
- *
- * Copyright (C) 1996 Jesper Skov (jskov@cygnus.co.uk)
- *
- * This driver is based on the CyberStorm driver, hence the occasional
- * reference to CyberStorm.
- *
- * Betatesting & crucial adjustments by
- * Patrik Rak (prak3264@ss1000.ms.mff.cuni.cz)
- *
- */
-
-/* TODO:
- *
- * o According to the doc from laire, it is required to reset the DMA when
- * the transfer is done. ATM we reset DMA just before every new
- * dma_init_(read|write).
- *
- * 1) Figure out how to make a cleaner merge with the sparc driver with regard
- * to the caches and the Sparc MMU mapping.
- * 2) Make as few routines required outside the generic driver. A lot of the
- * routines in this file used to be inline!
- */
-
-#include <linux/module.h>
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/interrupt.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <linux/zorro.h>
-#include <asm/irq.h>
-
-#include <asm/amigaints.h>
-#include <asm/amigahw.h>
-
-#include <asm/pgtable.h>
-
-/* Such day has just come... */
-#if 0
-/* Let this defined unless you really need to enable DMA IRQ one day */
-#define NODMAIRQ
-#endif
-
-/* The controller registers can be found in the Z2 config area at these
- * offsets:
- */
-#define FASTLANE_ESP_ADDR 0x1000001
-#define FASTLANE_DMA_ADDR 0x1000041
-
-
-/* The Fastlane DMA interface */
-struct fastlane_dma_registers {
- volatile unsigned char cond_reg; /* DMA status (ro) [0x0000] */
-#define ctrl_reg cond_reg /* DMA control (wo) [0x0000] */
- unsigned char dmapad1[0x3f];
- volatile unsigned char clear_strobe; /* DMA clear (wo) [0x0040] */
-};
-
-
-/* DMA status bits */
-#define FASTLANE_DMA_MINT 0x80
-#define FASTLANE_DMA_IACT 0x40
-#define FASTLANE_DMA_CREQ 0x20
-
-/* DMA control bits */
-#define FASTLANE_DMA_FCODE 0xa0
-#define FASTLANE_DMA_MASK 0xf3
-#define FASTLANE_DMA_LED 0x10 /* HD led control 1 = on */
-#define FASTLANE_DMA_WRITE 0x08 /* 1 = write */
-#define FASTLANE_DMA_ENABLE 0x04 /* Enable DMA */
-#define FASTLANE_DMA_EDI 0x02 /* Enable DMA IRQ ? */
-#define FASTLANE_DMA_ESI 0x01 /* Enable SCSI IRQ */
-
-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 addr, int length);
-static void dma_init_write(struct NCR_ESP *esp, __u32 vaddr, 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_irq_exit(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 unsigned char ctrl_data = 0; /* Keep backup of the stuff written
- * to ctrl_reg. Always write a copy
- * to this register when writing to
- * the hardware register!
- */
-
-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 inline void dma_clear(struct NCR_ESP *esp)
-{
- struct fastlane_dma_registers *dregs =
- (struct fastlane_dma_registers *) (esp->dregs);
- unsigned long *t;
-
- ctrl_data = (ctrl_data & FASTLANE_DMA_MASK);
- dregs->ctrl_reg = ctrl_data;
-
- t = (unsigned long *)(esp->edev);
-
- dregs->clear_strobe = 0;
- *t = 0 ;
-}
-
-/***************************************************************** Detection */
-int __init fastlane_esp_detect(struct scsi_host_template *tpnt)
-{
- struct NCR_ESP *esp;
- struct zorro_dev *z = NULL;
- unsigned long address;
-
- if ((z = zorro_find_device(ZORRO_PROD_PHASE5_BLIZZARD_1230_II_FASTLANE_Z3_CYBERSCSI_CYBERSTORM060, z))) {
- unsigned long board = z->resource.start;
- if (request_mem_region(board+FASTLANE_ESP_ADDR,
- sizeof(struct ESP_regs), "NCR53C9x")) {
- /* Check if this is really a fastlane controller. The problem
- * is that also the cyberstorm and blizzard controllers use
- * this ID value. Fortunately only Fastlane maps in Z3 space
- */
- if (board < 0x1000000) {
- goto err_release;
- }
- esp = esp_allocate(tpnt, (void *)board + FASTLANE_ESP_ADDR, 0);
-
- /* 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 = 0;
- 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;
-
- /* Initialize the portBits (enable IRQs) */
- ctrl_data = (FASTLANE_DMA_FCODE |
-#ifndef NODMAIRQ
- FASTLANE_DMA_EDI |
-#endif
- FASTLANE_DMA_ESI);
-
-
- /* SCSI chip clock */
- esp->cfreq = 40000000;
-
-
- /* Map the physical address space into virtual kernel space */
- address = (unsigned long)
- z_ioremap(board, z->resource.end-board+1);
-
- if(!address){
- printk("Could not remap Fastlane controller memory!");
- goto err_unregister;
- }
-
-
- /* The DMA registers on the Fastlane are mapped
- * relative to the device (i.e. in the same Zorro
- * I/O block).
- */
- esp->dregs = (void *)(address + FASTLANE_DMA_ADDR);
-
- /* ESP register base */
- esp->eregs = (struct ESP_regs *)(address + FASTLANE_ESP_ADDR);
-
- /* Board base */
- esp->edev = (void *) address;
-
- /* Set the command buffer */
- esp->esp_command = cmd_buffer;
- esp->esp_command_dvma = virt_to_bus((void *)cmd_buffer);
-
- esp->irq = IRQ_AMIGA_PORTS;
- esp->slot = board+FASTLANE_ESP_ADDR;
- if (request_irq(IRQ_AMIGA_PORTS, esp_intr, IRQF_SHARED,
- "Fastlane SCSI", esp->ehost)) {
- printk(KERN_WARNING "Fastlane: Could not get IRQ%d, aborting.\n", IRQ_AMIGA_PORTS);
- goto err_unmap;
- }
-
- /* Controller ID */
- esp->scsi_id = 7;
-
- /* We don't have a differential SCSI-bus. */
- esp->diff = 0;
-
- dma_clear(esp);
- esp_initialize(esp);
-
- printk("ESP: Total of %d ESP hosts found, %d actually in use.\n", nesps, esps_in_use);
- esps_running = esps_in_use;
- return esps_in_use;
- }
- }
- return 0;
-
- err_unmap:
- z_iounmap((void *)address);
- err_unregister:
- scsi_unregister (esp->ehost);
- err_release:
- release_mem_region(z->resource.start+FASTLANE_ESP_ADDR,
- sizeof(struct ESP_regs));
- return 0;
-}
-
-
-/************************************************************* DMA Functions */
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
-{
- /* Since the Fastlane 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 > 0xfffc)
- sz = 0xfffc;
- return sz;
-}
-
-static void dma_dump_state(struct NCR_ESP *esp)
-{
- ESPLOG(("esp%d: dma -- cond_reg<%02x>\n",
- esp->esp_id, ((struct fastlane_dma_registers *)
- (esp->dregs))->cond_reg));
- ESPLOG(("intreq:<%04x>, intena:<%04x>\n",
- amiga_custom.intreqr, amiga_custom.intenar));
-}
-
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length)
-{
- struct fastlane_dma_registers *dregs =
- (struct fastlane_dma_registers *) (esp->dregs);
- unsigned long *t;
-
- cache_clear(addr, length);
-
- dma_clear(esp);
-
- t = (unsigned long *)((addr & 0x00ffffff) + esp->edev);
-
- dregs->clear_strobe = 0;
- *t = addr;
-
- ctrl_data = (ctrl_data & FASTLANE_DMA_MASK) | FASTLANE_DMA_ENABLE;
- dregs->ctrl_reg = ctrl_data;
-}
-
-static void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length)
-{
- struct fastlane_dma_registers *dregs =
- (struct fastlane_dma_registers *) (esp->dregs);
- unsigned long *t;
-
- cache_push(addr, length);
-
- dma_clear(esp);
-
- t = (unsigned long *)((addr & 0x00ffffff) + (esp->edev));
-
- dregs->clear_strobe = 0;
- *t = addr;
-
- ctrl_data = ((ctrl_data & FASTLANE_DMA_MASK) |
- FASTLANE_DMA_ENABLE |
- FASTLANE_DMA_WRITE);
- dregs->ctrl_reg = ctrl_data;
-}
-
-
-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 void dma_irq_exit(struct NCR_ESP *esp)
-{
- struct fastlane_dma_registers *dregs =
- (struct fastlane_dma_registers *) (esp->dregs);
-
- dregs->ctrl_reg = ctrl_data & ~(FASTLANE_DMA_EDI|FASTLANE_DMA_ESI);
-#ifdef __mc68000__
- nop();
-#endif
- dregs->ctrl_reg = ctrl_data;
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
- struct fastlane_dma_registers *dregs =
- (struct fastlane_dma_registers *) (esp->dregs);
- unsigned char dma_status;
-
- dma_status = dregs->cond_reg;
-
- if(dma_status & FASTLANE_DMA_IACT)
- return 0; /* not our IRQ */
-
- /* Return non-zero if ESP requested IRQ */
- return (
-#ifndef NODMAIRQ
- (dma_status & FASTLANE_DMA_CREQ) &&
-#endif
- (!(dma_status & FASTLANE_DMA_MINT)) &&
- (esp_read(((struct ESP_regs *) (esp->eregs))->esp_status) & ESP_STAT_INTR));
-}
-
-static void dma_led_off(struct NCR_ESP *esp)
-{
- ctrl_data &= ~FASTLANE_DMA_LED;
- ((struct fastlane_dma_registers *)(esp->dregs))->ctrl_reg = ctrl_data;
-}
-
-static void dma_led_on(struct NCR_ESP *esp)
-{
- ctrl_data |= FASTLANE_DMA_LED;
- ((struct fastlane_dma_registers *)(esp->dregs))->ctrl_reg = ctrl_data;
-}
-
-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);
- }
-}
-
-#define HOSTS_C
-
-int fastlane_esp_release(struct Scsi_Host *instance)
-{
-#ifdef MODULE
- unsigned long address = (unsigned long)((struct NCR_ESP *)instance->hostdata)->edev;
- esp_deallocate((struct NCR_ESP *)instance->hostdata);
- esp_release();
- release_mem_region(address, sizeof(struct ESP_regs));
- free_irq(IRQ_AMIGA_PORTS, esp_intr);
-#endif
- return 1;
-}
-
-
-static struct scsi_host_template driver_template = {
- .proc_name = "esp-fastlane",
- .proc_info = esp_proc_info,
- .name = "Fastlane SCSI",
- .detect = fastlane_esp_detect,
- .slave_alloc = esp_slave_alloc,
- .slave_destroy = esp_slave_destroy,
- .release = fastlane_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");
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-11 23:42:39 +0000