+++ /dev/null
-/*
- * Disk Array driver for Compaq SMART2 Controllers
- * Copyright 1998 Compaq Computer Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Questions/Comments/Bugfixes to iss_storagedev@hp.com
- *
- * If you want to make changes, improve or add functionality to this
- * driver, you'll probably need the Compaq Array Controller Interface
- * Specificiation (Document number ECG086/1198)
- */
-
-/*
- * This file contains the controller communication implementation for
- * Compaq SMART-1 and SMART-2 controllers. To the best of my knowledge,
- * this should support:
- *
- * PCI:
- * SMART-2/P, SMART-2DH, SMART-2SL, SMART-221, SMART-3100ES, SMART-3200
- * Integerated SMART Array Controller, SMART-4200, SMART-4250ES
- *
- * EISA:
- * SMART-2/E, SMART, IAES, IDA-2, IDA
- */
-
-/*
- * Memory mapped FIFO interface (SMART 42xx cards)
- */
-static void smart4_submit_command(ctlr_info_t *h, cmdlist_t *c)
-{
- writel(c->busaddr, h->vaddr + S42XX_REQUEST_PORT_OFFSET);
-}
-
-/*
- * This card is the opposite of the other cards.
- * 0 turns interrupts on...
- * 0x08 turns them off...
- */
-static void smart4_intr_mask(ctlr_info_t *h, unsigned long val)
-{
- if (val)
- { /* Turn interrupts on */
- writel(0, h->vaddr + S42XX_REPLY_INTR_MASK_OFFSET);
- } else /* Turn them off */
- {
- writel( S42XX_INTR_OFF,
- h->vaddr + S42XX_REPLY_INTR_MASK_OFFSET);
- }
-}
-
-/*
- * For older cards FIFO Full = 0.
- * On this card 0 means there is room, anything else FIFO Full.
- *
- */
-static unsigned long smart4_fifo_full(ctlr_info_t *h)
-{
-
- return (!readl(h->vaddr + S42XX_REQUEST_PORT_OFFSET));
-}
-
-/* This type of controller returns -1 if the fifo is empty,
- * Not 0 like the others.
- * And we need to let it know we read a value out
- */
-static unsigned long smart4_completed(ctlr_info_t *h)
-{
- long register_value
- = readl(h->vaddr + S42XX_REPLY_PORT_OFFSET);
-
- /* Fifo is empty */
- if( register_value == 0xffffffff)
- return 0;
-
- /* Need to let it know we got the reply */
- /* We do this by writing a 0 to the port we just read from */
- writel(0, h->vaddr + S42XX_REPLY_PORT_OFFSET);
-
- return ((unsigned long) register_value);
-}
-
- /*
- * This hardware returns interrupt pending at a different place and
- * it does not tell us if the fifo is empty, we will have check
- * that by getting a 0 back from the command_completed call.
- */
-static unsigned long smart4_intr_pending(ctlr_info_t *h)
-{
- unsigned long register_value =
- readl(h->vaddr + S42XX_INTR_STATUS);
-
- if( register_value & S42XX_INTR_PENDING)
- return FIFO_NOT_EMPTY;
- return 0 ;
-}
-
-static struct access_method smart4_access = {
- smart4_submit_command,
- smart4_intr_mask,
- smart4_fifo_full,
- smart4_intr_pending,
- smart4_completed,
-};
-
-/*
- * Memory mapped FIFO interface (PCI SMART2 and SMART 3xxx cards)
- */
-static void smart2_submit_command(ctlr_info_t *h, cmdlist_t *c)
-{
- writel(c->busaddr, h->vaddr + COMMAND_FIFO);
-}
-
-static void smart2_intr_mask(ctlr_info_t *h, unsigned long val)
-{
- writel(val, h->vaddr + INTR_MASK);
-}
-
-static unsigned long smart2_fifo_full(ctlr_info_t *h)
-{
- return readl(h->vaddr + COMMAND_FIFO);
-}
-
-static unsigned long smart2_completed(ctlr_info_t *h)
-{
- return readl(h->vaddr + COMMAND_COMPLETE_FIFO);
-}
-
-static unsigned long smart2_intr_pending(ctlr_info_t *h)
-{
- return readl(h->vaddr + INTR_PENDING);
-}
-
-static struct access_method smart2_access = {
- smart2_submit_command,
- smart2_intr_mask,
- smart2_fifo_full,
- smart2_intr_pending,
- smart2_completed,
-};
-
-/*
- * IO access for SMART-2/E cards
- */
-static void smart2e_submit_command(ctlr_info_t *h, cmdlist_t *c)
-{
- outl(c->busaddr, h->io_mem_addr + COMMAND_FIFO);
-}
-
-static void smart2e_intr_mask(ctlr_info_t *h, unsigned long val)
-{
- outl(val, h->io_mem_addr + INTR_MASK);
-}
-
-static unsigned long smart2e_fifo_full(ctlr_info_t *h)
-{
- return inl(h->io_mem_addr + COMMAND_FIFO);
-}
-
-static unsigned long smart2e_completed(ctlr_info_t *h)
-{
- return inl(h->io_mem_addr + COMMAND_COMPLETE_FIFO);
-}
-
-static unsigned long smart2e_intr_pending(ctlr_info_t *h)
-{
- return inl(h->io_mem_addr + INTR_PENDING);
-}
-
-static struct access_method smart2e_access = {
- smart2e_submit_command,
- smart2e_intr_mask,
- smart2e_fifo_full,
- smart2e_intr_pending,
- smart2e_completed,
-};
-
-/*
- * IO access for older SMART-1 type cards
- */
-#define SMART1_SYSTEM_MASK 0xC8E
-#define SMART1_SYSTEM_DOORBELL 0xC8F
-#define SMART1_LOCAL_MASK 0xC8C
-#define SMART1_LOCAL_DOORBELL 0xC8D
-#define SMART1_INTR_MASK 0xC89
-#define SMART1_LISTADDR 0xC90
-#define SMART1_LISTLEN 0xC94
-#define SMART1_TAG 0xC97
-#define SMART1_COMPLETE_ADDR 0xC98
-#define SMART1_LISTSTATUS 0xC9E
-
-#define CHANNEL_BUSY 0x01
-#define CHANNEL_CLEAR 0x02
-
-static void smart1_submit_command(ctlr_info_t *h, cmdlist_t *c)
-{
- /*
- * This __u16 is actually a bunch of control flags on SMART
- * and below. We want them all to be zero.
- */
- c->hdr.size = 0;
-
- outb(CHANNEL_CLEAR, h->io_mem_addr + SMART1_SYSTEM_DOORBELL);
-
- outl(c->busaddr, h->io_mem_addr + SMART1_LISTADDR);
- outw(c->size, h->io_mem_addr + SMART1_LISTLEN);
-
- outb(CHANNEL_BUSY, h->io_mem_addr + SMART1_LOCAL_DOORBELL);
-}
-
-static void smart1_intr_mask(ctlr_info_t *h, unsigned long val)
-{
- if (val == 1) {
- outb(0xFD, h->io_mem_addr + SMART1_SYSTEM_DOORBELL);
- outb(CHANNEL_BUSY, h->io_mem_addr + SMART1_LOCAL_DOORBELL);
- outb(0x01, h->io_mem_addr + SMART1_INTR_MASK);
- outb(0x01, h->io_mem_addr + SMART1_SYSTEM_MASK);
- } else {
- outb(0, h->io_mem_addr + 0xC8E);
- }
-}
-
-static unsigned long smart1_fifo_full(ctlr_info_t *h)
-{
- unsigned char chan;
- chan = inb(h->io_mem_addr + SMART1_SYSTEM_DOORBELL) & CHANNEL_CLEAR;
- return chan;
-}
-
-static unsigned long smart1_completed(ctlr_info_t *h)
-{
- unsigned char status;
- unsigned long cmd;
-
- if (inb(h->io_mem_addr + SMART1_SYSTEM_DOORBELL) & CHANNEL_BUSY) {
- outb(CHANNEL_BUSY, h->io_mem_addr + SMART1_SYSTEM_DOORBELL);
-
- cmd = inl(h->io_mem_addr + SMART1_COMPLETE_ADDR);
- status = inb(h->io_mem_addr + SMART1_LISTSTATUS);
-
- outb(CHANNEL_CLEAR, h->io_mem_addr + SMART1_LOCAL_DOORBELL);
-
- /*
- * this is x86 (actually compaq x86) only, so it's ok
- */
- if (cmd) ((cmdlist_t*)bus_to_virt(cmd))->req.hdr.rcode = status;
- } else {
- cmd = 0;
- }
- return cmd;
-}
-
-static unsigned long smart1_intr_pending(ctlr_info_t *h)
-{
- unsigned char chan;
- chan = inb(h->io_mem_addr + SMART1_SYSTEM_DOORBELL) & CHANNEL_BUSY;
- return chan;
-}
-
-static struct access_method smart1_access = {
- smart1_submit_command,
- smart1_intr_mask,
- smart1_fifo_full,
- smart1_intr_pending,
- smart1_completed,
-};
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