diff options
Diffstat (limited to 'drivers/scsi/NCR_Q720.c')
| -rw-r--r-- | drivers/scsi/NCR_Q720.c | 376 |
1 files changed, 0 insertions, 376 deletions
diff --git a/drivers/scsi/NCR_Q720.c b/drivers/scsi/NCR_Q720.c deleted file mode 100644 index 54e7d26908ee..000000000000 --- a/drivers/scsi/NCR_Q720.c +++ /dev/null @@ -1,376 +0,0 @@ -/* -*- mode: c; c-basic-offset: 8 -*- */ - -/* NCR Quad 720 MCA SCSI Driver - * - * Copyright (C) 2003 by James.Bottomley@HansenPartnership.com - */ - -#include <linux/blkdev.h> -#include <linux/interrupt.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/mca.h> -#include <linux/slab.h> -#include <linux/types.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <asm/io.h> - -#include "scsi.h" -#include <scsi/scsi_host.h> - -#include "ncr53c8xx.h" - -#include "NCR_Q720.h" - -static struct ncr_chip q720_chip __initdata = { - .revision_id = 0x0f, - .burst_max = 3, - .offset_max = 8, - .nr_divisor = 4, - .features = FE_WIDE | FE_DIFF | FE_VARCLK, -}; - -MODULE_AUTHOR("James Bottomley"); -MODULE_DESCRIPTION("NCR Quad 720 SCSI Driver"); -MODULE_LICENSE("GPL"); - -#define NCR_Q720_VERSION "0.9" - -/* We needs this helper because we have up to four hosts per struct device */ -struct NCR_Q720_private { - struct device *dev; - void __iomem * mem_base; - __u32 phys_mem_base; - __u32 mem_size; - __u8 irq; - __u8 siops; - __u8 irq_enable; - struct Scsi_Host *hosts[4]; -}; - -static struct scsi_host_template NCR_Q720_tpnt = { - .module = THIS_MODULE, - .proc_name = "NCR_Q720", -}; - -static irqreturn_t -NCR_Q720_intr(int irq, void *data) -{ - struct NCR_Q720_private *p = (struct NCR_Q720_private *)data; - __u8 sir = (readb(p->mem_base + 0x0d) & 0xf0) >> 4; - __u8 siop; - - sir |= ~p->irq_enable; - - if(sir == 0xff) - return IRQ_NONE; - - - while((siop = ffz(sir)) < p->siops) { - sir |= 1<<siop; - ncr53c8xx_intr(irq, p->hosts[siop]); - } - return IRQ_HANDLED; -} - -static int __init -NCR_Q720_probe_one(struct NCR_Q720_private *p, int siop, - int irq, int slot, __u32 paddr, void __iomem *vaddr) -{ - struct ncr_device device; - __u8 scsi_id; - static int unit = 0; - __u8 scsr1 = readb(vaddr + NCR_Q720_SCSR_OFFSET + 1); - __u8 differential = readb(vaddr + NCR_Q720_SCSR_OFFSET) & 0x20; - __u8 version; - int error; - - scsi_id = scsr1 >> 4; - /* enable burst length 16 (FIXME: should allow this) */ - scsr1 |= 0x02; - /* force a siop reset */ - scsr1 |= 0x04; - writeb(scsr1, vaddr + NCR_Q720_SCSR_OFFSET + 1); - udelay(10); - version = readb(vaddr + 0x18) >> 4; - - memset(&device, 0, sizeof(struct ncr_device)); - /* Initialise ncr_device structure with items required by ncr_attach. */ - device.chip = q720_chip; - device.chip.revision_id = version; - device.host_id = scsi_id; - device.dev = p->dev; - device.slot.base = paddr; - device.slot.base_c = paddr; - device.slot.base_v = vaddr; - device.slot.irq = irq; - device.differential = differential ? 2 : 0; - printk("Q720 probe unit %d (siop%d) at 0x%lx, diff = %d, vers = %d\n", unit, siop, - (unsigned long)paddr, differential, version); - - p->hosts[siop] = ncr_attach(&NCR_Q720_tpnt, unit++, &device); - - if (!p->hosts[siop]) - goto fail; - - p->irq_enable |= (1<<siop); - scsr1 = readb(vaddr + NCR_Q720_SCSR_OFFSET + 1); - /* clear the disable interrupt bit */ - scsr1 &= ~0x01; - writeb(scsr1, vaddr + NCR_Q720_SCSR_OFFSET + 1); - - error = scsi_add_host(p->hosts[siop], p->dev); - if (error) - ncr53c8xx_release(p->hosts[siop]); - else - scsi_scan_host(p->hosts[siop]); - return error; - - fail: - return -ENODEV; -} - -/* Detect a Q720 card. Note, because of the setup --- the chips are - * essentially connectecd to the MCA bus independently, it is easier - * to set them up as two separate host adapters, rather than one - * adapter with two channels */ -static int __init -NCR_Q720_probe(struct device *dev) -{ - struct NCR_Q720_private *p; - static int banner = 1; - struct mca_device *mca_dev = to_mca_device(dev); - int slot = mca_dev->slot; - int found = 0; - int irq, i, siops; - __u8 pos2, pos4, asr2, asr9, asr10; - __u16 io_base; - __u32 base_addr, mem_size; - void __iomem *mem_base; - - p = kzalloc(sizeof(*p), GFP_KERNEL); - if (!p) - return -ENOMEM; - - pos2 = mca_device_read_pos(mca_dev, 2); - /* enable device */ - pos2 |= NCR_Q720_POS2_BOARD_ENABLE | NCR_Q720_POS2_INTERRUPT_ENABLE; - mca_device_write_pos(mca_dev, 2, pos2); - - io_base = (pos2 & NCR_Q720_POS2_IO_MASK) << NCR_Q720_POS2_IO_SHIFT; - - - if(banner) { - printk(KERN_NOTICE "NCR Q720: Driver Version " NCR_Q720_VERSION "\n" - "NCR Q720: Copyright (c) 2003 by James.Bottomley@HansenPartnership.com\n" - "NCR Q720:\n"); - banner = 0; - } - io_base = mca_device_transform_ioport(mca_dev, io_base); - - /* OK, this is phase one of the bootstrap, we now know the - * I/O space base address. All the configuration registers - * are mapped here (including pos) */ - - /* sanity check I/O mapping */ - i = inb(io_base) | (inb(io_base+1)<<8); - if(i != NCR_Q720_MCA_ID) { - printk(KERN_ERR "NCR_Q720, adapter failed to I/O map registers correctly at 0x%x(0x%x)\n", io_base, i); - kfree(p); - return -ENODEV; - } - - /* Phase II, find the ram base and memory map the board register */ - pos4 = inb(io_base + 4); - /* enable streaming data */ - pos4 |= 0x01; - outb(pos4, io_base + 4); - base_addr = (pos4 & 0x7e) << 20; - base_addr += (pos4 & 0x80) << 23; - asr10 = inb(io_base + 0x12); - base_addr += (asr10 & 0x80) << 24; - base_addr += (asr10 & 0x70) << 23; - - /* OK, got the base addr, now we need to find the ram size, - * enable and map it */ - asr9 = inb(io_base + 0x11); - i = (asr9 & 0xc0) >> 6; - if(i == 0) - mem_size = 1024; - else - mem_size = 1 << (19 + i); - - /* enable the sram mapping */ - asr9 |= 0x20; - - /* disable the rom mapping */ - asr9 &= ~0x10; - - outb(asr9, io_base + 0x11); - - if(!request_mem_region(base_addr, mem_size, "NCR_Q720")) { - printk(KERN_ERR "NCR_Q720: Failed to claim memory region 0x%lx\n-0x%lx", - (unsigned long)base_addr, - (unsigned long)(base_addr + mem_size)); - goto out_free; - } - - if (dma_declare_coherent_memory(dev, base_addr, base_addr, - mem_size, 0)) { - printk(KERN_ERR "NCR_Q720: DMA declare memory failed\n"); - goto out_release_region; - } - - /* The first 1k of the memory buffer is a memory map of the registers - */ - mem_base = dma_mark_declared_memory_occupied(dev, base_addr, - 1024); - if (IS_ERR(mem_base)) { - printk("NCR_Q720 failed to reserve memory mapped region\n"); - goto out_release; - } - - /* now also enable accesses in asr 2 */ - asr2 = inb(io_base + 0x0a); - - asr2 |= 0x01; - - outb(asr2, io_base + 0x0a); - - /* get the number of SIOPs (this should be 2 or 4) */ - siops = ((asr2 & 0xe0) >> 5) + 1; - - /* sanity check mapping (again) */ - i = readw(mem_base); - if(i != NCR_Q720_MCA_ID) { - printk(KERN_ERR "NCR_Q720, adapter failed to memory map registers correctly at 0x%lx(0x%x)\n", (unsigned long)base_addr, i); - goto out_release; - } - - irq = readb(mem_base + 5) & 0x0f; - - - /* now do the bus related transforms */ - irq = mca_device_transform_irq(mca_dev, irq); - - printk(KERN_NOTICE "NCR Q720: found in slot %d irq = %d mem base = 0x%lx siops = %d\n", slot, irq, (unsigned long)base_addr, siops); - printk(KERN_NOTICE "NCR Q720: On board ram %dk\n", mem_size/1024); - - p->dev = dev; - p->mem_base = mem_base; - p->phys_mem_base = base_addr; - p->mem_size = mem_size; - p->irq = irq; - p->siops = siops; - - if (request_irq(irq, NCR_Q720_intr, IRQF_SHARED, "NCR_Q720", p)) { - printk(KERN_ERR "NCR_Q720: request irq %d failed\n", irq); - goto out_release; - } - /* disable all the siop interrupts */ - for(i = 0; i < siops; i++) { - void __iomem *reg_scsr1 = mem_base + NCR_Q720_CHIP_REGISTER_OFFSET - + i*NCR_Q720_SIOP_SHIFT + NCR_Q720_SCSR_OFFSET + 1; - __u8 scsr1 = readb(reg_scsr1); - scsr1 |= 0x01; - writeb(scsr1, reg_scsr1); - } - - /* plumb in all 720 chips */ - for (i = 0; i < siops; i++) { - void __iomem *siop_v_base = mem_base + NCR_Q720_CHIP_REGISTER_OFFSET - + i*NCR_Q720_SIOP_SHIFT; - __u32 siop_p_base = base_addr + NCR_Q720_CHIP_REGISTER_OFFSET - + i*NCR_Q720_SIOP_SHIFT; - __u16 port = io_base + NCR_Q720_CHIP_REGISTER_OFFSET - + i*NCR_Q720_SIOP_SHIFT; - int err; - - outb(0xff, port + 0x40); - outb(0x07, port + 0x41); - if ((err = NCR_Q720_probe_one(p, i, irq, slot, - siop_p_base, siop_v_base)) != 0) - printk("Q720: SIOP%d: probe failed, error = %d\n", - i, err); - else - found++; - } - - if (!found) { - kfree(p); - return -ENODEV; - } - - mca_device_set_claim(mca_dev, 1); - mca_device_set_name(mca_dev, "NCR_Q720"); - dev_set_drvdata(dev, p); - - return 0; - - out_release: - dma_release_declared_memory(dev); - out_release_region: - release_mem_region(base_addr, mem_size); - out_free: - kfree(p); - - return -ENODEV; -} - -static void __exit -NCR_Q720_remove_one(struct Scsi_Host *host) -{ - scsi_remove_host(host); - ncr53c8xx_release(host); -} - -static int __exit -NCR_Q720_remove(struct device *dev) -{ - struct NCR_Q720_private *p = dev_get_drvdata(dev); - int i; - - for (i = 0; i < p->siops; i++) - if(p->hosts[i]) - NCR_Q720_remove_one(p->hosts[i]); - - dma_release_declared_memory(dev); - release_mem_region(p->phys_mem_base, p->mem_size); - free_irq(p->irq, p); - kfree(p); - return 0; -} - -static short NCR_Q720_id_table[] = { NCR_Q720_MCA_ID, 0 }; - -static struct mca_driver NCR_Q720_driver = { - .id_table = NCR_Q720_id_table, - .driver = { - .name = "NCR_Q720", - .bus = &mca_bus_type, - .probe = NCR_Q720_probe, - .remove = NCR_Q720_remove, - }, -}; - -static int __init -NCR_Q720_init(void) -{ - int ret = ncr53c8xx_init(); - if (!ret) - ret = mca_register_driver(&NCR_Q720_driver); - if (ret) - ncr53c8xx_exit(); - return ret; -} - -static void __exit -NCR_Q720_exit(void) -{ - mca_unregister_driver(&NCR_Q720_driver); - ncr53c8xx_exit(); -} - -module_init(NCR_Q720_init); -module_exit(NCR_Q720_exit); |