684 lines
17 KiB
C
684 lines
17 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Adaptec AAC series RAID controller driver
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* (c) Copyright 2001 Red Hat Inc.
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*
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* based on the old aacraid driver that is..
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* Adaptec aacraid device driver for Linux.
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*
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* Copyright (c) 2000-2010 Adaptec, Inc.
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* 2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
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* 2016-2017 Microsemi Corp. (aacraid@microsemi.com)
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*
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* Module Name:
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* rx.c
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*
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* Abstract: Hardware miniport for Drawbridge specific hardware functions.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/pci.h>
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#include <linux/spinlock.h>
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#include <linux/blkdev.h>
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#include <linux/delay.h>
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#include <linux/completion.h>
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#include <linux/time.h>
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#include <linux/interrupt.h>
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#include <scsi/scsi_host.h>
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#include "aacraid.h"
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static irqreturn_t aac_rx_intr_producer(int irq, void *dev_id)
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{
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struct aac_dev *dev = dev_id;
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unsigned long bellbits;
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u8 intstat = rx_readb(dev, MUnit.OISR);
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/*
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* Read mask and invert because drawbridge is reversed.
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* This allows us to only service interrupts that have
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* been enabled.
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* Check to see if this is our interrupt. If it isn't just return
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*/
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if (likely(intstat & ~(dev->OIMR))) {
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bellbits = rx_readl(dev, OutboundDoorbellReg);
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if (unlikely(bellbits & DoorBellPrintfReady)) {
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aac_printf(dev, readl (&dev->IndexRegs->Mailbox[5]));
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rx_writel(dev, MUnit.ODR,DoorBellPrintfReady);
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rx_writel(dev, InboundDoorbellReg,DoorBellPrintfDone);
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}
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else if (unlikely(bellbits & DoorBellAdapterNormCmdReady)) {
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rx_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdReady);
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aac_command_normal(&dev->queues->queue[HostNormCmdQueue]);
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}
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else if (likely(bellbits & DoorBellAdapterNormRespReady)) {
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rx_writel(dev, MUnit.ODR,DoorBellAdapterNormRespReady);
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aac_response_normal(&dev->queues->queue[HostNormRespQueue]);
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}
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else if (unlikely(bellbits & DoorBellAdapterNormCmdNotFull)) {
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rx_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdNotFull);
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}
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else if (unlikely(bellbits & DoorBellAdapterNormRespNotFull)) {
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rx_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdNotFull);
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rx_writel(dev, MUnit.ODR, DoorBellAdapterNormRespNotFull);
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}
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return IRQ_HANDLED;
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}
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return IRQ_NONE;
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}
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static irqreturn_t aac_rx_intr_message(int irq, void *dev_id)
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{
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int isAif, isFastResponse, isSpecial;
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struct aac_dev *dev = dev_id;
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u32 Index = rx_readl(dev, MUnit.OutboundQueue);
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if (unlikely(Index == 0xFFFFFFFFL))
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Index = rx_readl(dev, MUnit.OutboundQueue);
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if (likely(Index != 0xFFFFFFFFL)) {
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do {
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isAif = isFastResponse = isSpecial = 0;
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if (Index & 0x00000002L) {
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isAif = 1;
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if (Index == 0xFFFFFFFEL)
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isSpecial = 1;
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Index &= ~0x00000002L;
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} else {
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if (Index & 0x00000001L)
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isFastResponse = 1;
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Index >>= 2;
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}
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if (!isSpecial) {
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if (unlikely(aac_intr_normal(dev,
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Index, isAif,
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isFastResponse, NULL))) {
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rx_writel(dev,
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MUnit.OutboundQueue,
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Index);
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rx_writel(dev,
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MUnit.ODR,
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DoorBellAdapterNormRespReady);
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}
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}
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Index = rx_readl(dev, MUnit.OutboundQueue);
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} while (Index != 0xFFFFFFFFL);
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return IRQ_HANDLED;
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}
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return IRQ_NONE;
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}
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/**
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* aac_rx_disable_interrupt - Disable interrupts
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* @dev: Adapter
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*/
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static void aac_rx_disable_interrupt(struct aac_dev *dev)
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{
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rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
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}
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/**
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* aac_rx_enable_interrupt_producer - Enable interrupts
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* @dev: Adapter
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*/
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static void aac_rx_enable_interrupt_producer(struct aac_dev *dev)
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{
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rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
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}
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/**
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* aac_rx_enable_interrupt_message - Enable interrupts
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* @dev: Adapter
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*/
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static void aac_rx_enable_interrupt_message(struct aac_dev *dev)
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{
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rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xf7);
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}
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/**
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* rx_sync_cmd - send a command and wait
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* @dev: Adapter
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* @command: Command to execute
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* @p1: first parameter
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* @p2: second parameter
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* @p3: third parameter
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* @p4: forth parameter
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* @p5: fifth parameter
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* @p6: sixth parameter
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* @status: adapter status
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* @r1: first return value
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* @r2: second return value
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* @r3: third return value
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* @r4: forth return value
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*
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* This routine will send a synchronous command to the adapter and wait
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* for its completion.
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*/
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static int rx_sync_cmd(struct aac_dev *dev, u32 command,
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u32 p1, u32 p2, u32 p3, u32 p4, u32 p5, u32 p6,
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u32 *status, u32 * r1, u32 * r2, u32 * r3, u32 * r4)
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{
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unsigned long start;
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int ok;
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/*
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* Write the command into Mailbox 0
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*/
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writel(command, &dev->IndexRegs->Mailbox[0]);
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/*
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* Write the parameters into Mailboxes 1 - 6
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*/
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writel(p1, &dev->IndexRegs->Mailbox[1]);
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writel(p2, &dev->IndexRegs->Mailbox[2]);
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writel(p3, &dev->IndexRegs->Mailbox[3]);
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writel(p4, &dev->IndexRegs->Mailbox[4]);
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/*
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* Clear the synch command doorbell to start on a clean slate.
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*/
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rx_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
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/*
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* Disable doorbell interrupts
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*/
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rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
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/*
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* Force the completion of the mask register write before issuing
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* the interrupt.
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*/
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rx_readb (dev, MUnit.OIMR);
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/*
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* Signal that there is a new synch command
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*/
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rx_writel(dev, InboundDoorbellReg, INBOUNDDOORBELL_0);
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ok = 0;
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start = jiffies;
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/*
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* Wait up to 30 seconds
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*/
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while (time_before(jiffies, start+30*HZ))
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{
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udelay(5); /* Delay 5 microseconds to let Mon960 get info. */
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/*
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* Mon960 will set doorbell0 bit when it has completed the command.
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*/
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if (rx_readl(dev, OutboundDoorbellReg) & OUTBOUNDDOORBELL_0) {
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/*
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* Clear the doorbell.
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*/
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rx_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
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ok = 1;
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break;
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}
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/*
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* Yield the processor in case we are slow
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*/
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msleep(1);
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}
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if (unlikely(ok != 1)) {
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/*
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* Restore interrupt mask even though we timed out
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*/
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aac_adapter_enable_int(dev);
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return -ETIMEDOUT;
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}
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/*
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* Pull the synch status from Mailbox 0.
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*/
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if (status)
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*status = readl(&dev->IndexRegs->Mailbox[0]);
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if (r1)
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*r1 = readl(&dev->IndexRegs->Mailbox[1]);
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if (r2)
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*r2 = readl(&dev->IndexRegs->Mailbox[2]);
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if (r3)
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*r3 = readl(&dev->IndexRegs->Mailbox[3]);
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if (r4)
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*r4 = readl(&dev->IndexRegs->Mailbox[4]);
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/*
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* Clear the synch command doorbell.
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*/
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rx_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
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/*
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* Restore interrupt mask
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*/
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aac_adapter_enable_int(dev);
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return 0;
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}
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/**
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* aac_rx_interrupt_adapter - interrupt adapter
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* @dev: Adapter
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*
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* Send an interrupt to the i960 and breakpoint it.
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*/
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static void aac_rx_interrupt_adapter(struct aac_dev *dev)
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{
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rx_sync_cmd(dev, BREAKPOINT_REQUEST, 0, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
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}
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/**
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* aac_rx_notify_adapter - send an event to the adapter
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* @dev: Adapter
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* @event: Event to send
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*
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* Notify the i960 that something it probably cares about has
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* happened.
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*/
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static void aac_rx_notify_adapter(struct aac_dev *dev, u32 event)
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{
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switch (event) {
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case AdapNormCmdQue:
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rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_1);
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break;
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case HostNormRespNotFull:
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rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_4);
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break;
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case AdapNormRespQue:
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rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_2);
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break;
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case HostNormCmdNotFull:
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rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_3);
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break;
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case HostShutdown:
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break;
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case FastIo:
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rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_6);
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break;
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case AdapPrintfDone:
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rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_5);
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break;
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default:
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BUG();
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break;
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}
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}
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/**
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* aac_rx_start_adapter - activate adapter
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* @dev: Adapter
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*
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* Start up processing on an i960 based AAC adapter
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*/
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static void aac_rx_start_adapter(struct aac_dev *dev)
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{
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union aac_init *init;
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init = dev->init;
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init->r7.host_elapsed_seconds = cpu_to_le32(ktime_get_real_seconds());
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// We can only use a 32 bit address here
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rx_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, (u32)(ulong)dev->init_pa,
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0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
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}
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/**
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* aac_rx_check_health
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* @dev: device to check if healthy
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*
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* Will attempt to determine if the specified adapter is alive and
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* capable of handling requests, returning 0 if alive.
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*/
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static int aac_rx_check_health(struct aac_dev *dev)
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{
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u32 status = rx_readl(dev, MUnit.OMRx[0]);
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/*
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* Check to see if the board failed any self tests.
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*/
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if (unlikely(status & SELF_TEST_FAILED))
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return -1;
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/*
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* Check to see if the board panic'd.
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*/
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if (unlikely(status & KERNEL_PANIC)) {
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char * buffer;
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struct POSTSTATUS {
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__le32 Post_Command;
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__le32 Post_Address;
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} * post;
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dma_addr_t paddr, baddr;
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int ret;
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if (likely((status & 0xFF000000L) == 0xBC000000L))
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return (status >> 16) & 0xFF;
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buffer = dma_alloc_coherent(&dev->pdev->dev, 512, &baddr,
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GFP_KERNEL);
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ret = -2;
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if (unlikely(buffer == NULL))
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return ret;
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post = dma_alloc_coherent(&dev->pdev->dev,
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sizeof(struct POSTSTATUS), &paddr,
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GFP_KERNEL);
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if (unlikely(post == NULL)) {
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dma_free_coherent(&dev->pdev->dev, 512, buffer, baddr);
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return ret;
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}
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memset(buffer, 0, 512);
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post->Post_Command = cpu_to_le32(COMMAND_POST_RESULTS);
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post->Post_Address = cpu_to_le32(baddr);
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rx_writel(dev, MUnit.IMRx[0], paddr);
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rx_sync_cmd(dev, COMMAND_POST_RESULTS, baddr, 0, 0, 0, 0, 0,
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NULL, NULL, NULL, NULL, NULL);
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dma_free_coherent(&dev->pdev->dev, sizeof(struct POSTSTATUS),
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post, paddr);
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if (likely((buffer[0] == '0') && ((buffer[1] == 'x') || (buffer[1] == 'X')))) {
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ret = (hex_to_bin(buffer[2]) << 4) +
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hex_to_bin(buffer[3]);
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}
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dma_free_coherent(&dev->pdev->dev, 512, buffer, baddr);
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return ret;
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}
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/*
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* Wait for the adapter to be up and running.
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*/
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if (unlikely(!(status & KERNEL_UP_AND_RUNNING)))
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return -3;
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/*
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* Everything is OK
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*/
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return 0;
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}
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/**
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* aac_rx_deliver_producer
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* @fib: fib to issue
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*
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* Will send a fib, returning 0 if successful.
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*/
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int aac_rx_deliver_producer(struct fib * fib)
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{
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struct aac_dev *dev = fib->dev;
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struct aac_queue *q = &dev->queues->queue[AdapNormCmdQueue];
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u32 Index;
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unsigned long nointr = 0;
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aac_queue_get( dev, &Index, AdapNormCmdQueue, fib->hw_fib_va, 1, fib, &nointr);
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atomic_inc(&q->numpending);
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*(q->headers.producer) = cpu_to_le32(Index + 1);
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if (!(nointr & aac_config.irq_mod))
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aac_adapter_notify(dev, AdapNormCmdQueue);
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return 0;
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}
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/**
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* aac_rx_deliver_message
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* @fib: fib to issue
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*
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* Will send a fib, returning 0 if successful.
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*/
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static int aac_rx_deliver_message(struct fib * fib)
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{
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struct aac_dev *dev = fib->dev;
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struct aac_queue *q = &dev->queues->queue[AdapNormCmdQueue];
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u32 Index;
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u64 addr;
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volatile void __iomem *device;
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unsigned long count = 10000000L; /* 50 seconds */
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atomic_inc(&q->numpending);
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for(;;) {
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Index = rx_readl(dev, MUnit.InboundQueue);
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if (unlikely(Index == 0xFFFFFFFFL))
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Index = rx_readl(dev, MUnit.InboundQueue);
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if (likely(Index != 0xFFFFFFFFL))
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break;
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if (--count == 0) {
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atomic_dec(&q->numpending);
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return -ETIMEDOUT;
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}
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udelay(5);
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}
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device = dev->base + Index;
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addr = fib->hw_fib_pa;
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writel((u32)(addr & 0xffffffff), device);
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device += sizeof(u32);
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writel((u32)(addr >> 32), device);
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device += sizeof(u32);
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writel(le16_to_cpu(fib->hw_fib_va->header.Size), device);
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rx_writel(dev, MUnit.InboundQueue, Index);
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return 0;
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}
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/**
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* aac_rx_ioremap
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* @dev: adapter
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* @size: mapping resize request
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*
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*/
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static int aac_rx_ioremap(struct aac_dev * dev, u32 size)
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{
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if (!size) {
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iounmap(dev->regs.rx);
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return 0;
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}
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dev->base = dev->regs.rx = ioremap(dev->base_start, size);
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if (dev->base == NULL)
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return -1;
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dev->IndexRegs = &dev->regs.rx->IndexRegs;
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return 0;
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}
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static int aac_rx_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
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{
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u32 var = 0;
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if (!(dev->supplement_adapter_info.supported_options2 &
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AAC_OPTION_MU_RESET) || (bled >= 0) || (bled == -2)) {
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if (bled)
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printk(KERN_ERR "%s%d: adapter kernel panic'd %x.\n",
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dev->name, dev->id, bled);
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else {
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bled = aac_adapter_sync_cmd(dev, IOP_RESET_ALWAYS,
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0, 0, 0, 0, 0, 0, &var, NULL, NULL, NULL, NULL);
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if (!bled && (var != 0x00000001) && (var != 0x3803000F))
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bled = -EINVAL;
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}
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if (bled && (bled != -ETIMEDOUT))
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bled = aac_adapter_sync_cmd(dev, IOP_RESET,
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0, 0, 0, 0, 0, 0, &var, NULL, NULL, NULL, NULL);
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if (bled && (bled != -ETIMEDOUT))
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return -EINVAL;
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}
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if (bled && (var == 0x3803000F)) { /* USE_OTHER_METHOD */
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rx_writel(dev, MUnit.reserved2, 3);
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msleep(5000); /* Delay 5 seconds */
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var = 0x00000001;
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}
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if (bled && (var != 0x00000001))
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return -EINVAL;
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ssleep(5);
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if (rx_readl(dev, MUnit.OMRx[0]) & KERNEL_PANIC)
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return -ENODEV;
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if (startup_timeout < 300)
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startup_timeout = 300;
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return 0;
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}
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|
/**
|
|
* aac_rx_select_comm - Select communications method
|
|
* @dev: Adapter
|
|
* @comm: communications method
|
|
*/
|
|
|
|
int aac_rx_select_comm(struct aac_dev *dev, int comm)
|
|
{
|
|
switch (comm) {
|
|
case AAC_COMM_PRODUCER:
|
|
dev->a_ops.adapter_enable_int = aac_rx_enable_interrupt_producer;
|
|
dev->a_ops.adapter_intr = aac_rx_intr_producer;
|
|
dev->a_ops.adapter_deliver = aac_rx_deliver_producer;
|
|
break;
|
|
case AAC_COMM_MESSAGE:
|
|
dev->a_ops.adapter_enable_int = aac_rx_enable_interrupt_message;
|
|
dev->a_ops.adapter_intr = aac_rx_intr_message;
|
|
dev->a_ops.adapter_deliver = aac_rx_deliver_message;
|
|
break;
|
|
default:
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* _aac_rx_init - initialize an i960 based AAC card
|
|
* @dev: device to configure
|
|
*
|
|
* Allocate and set up resources for the i960 based AAC variants. The
|
|
* device_interface in the commregion will be allocated and linked
|
|
* to the comm region.
|
|
*/
|
|
|
|
int _aac_rx_init(struct aac_dev *dev)
|
|
{
|
|
unsigned long start;
|
|
unsigned long status;
|
|
int restart = 0;
|
|
int instance = dev->id;
|
|
const char * name = dev->name;
|
|
|
|
if (aac_adapter_ioremap(dev, dev->base_size)) {
|
|
printk(KERN_WARNING "%s: unable to map adapter.\n", name);
|
|
goto error_iounmap;
|
|
}
|
|
|
|
/* Failure to reset here is an option ... */
|
|
dev->a_ops.adapter_sync_cmd = rx_sync_cmd;
|
|
dev->a_ops.adapter_enable_int = aac_rx_disable_interrupt;
|
|
dev->OIMR = status = rx_readb (dev, MUnit.OIMR);
|
|
|
|
if (((status & 0x0c) != 0x0c) || dev->init_reset) {
|
|
dev->init_reset = false;
|
|
if (!aac_rx_restart_adapter(dev, 0, IOP_HWSOFT_RESET)) {
|
|
/* Make sure the Hardware FIFO is empty */
|
|
while ((++restart < 512) &&
|
|
(rx_readl(dev, MUnit.OutboundQueue) != 0xFFFFFFFFL));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check to see if the board panic'd while booting.
|
|
*/
|
|
status = rx_readl(dev, MUnit.OMRx[0]);
|
|
if (status & KERNEL_PANIC) {
|
|
if (aac_rx_restart_adapter(dev,
|
|
aac_rx_check_health(dev), IOP_HWSOFT_RESET))
|
|
goto error_iounmap;
|
|
++restart;
|
|
}
|
|
/*
|
|
* Check to see if the board failed any self tests.
|
|
*/
|
|
status = rx_readl(dev, MUnit.OMRx[0]);
|
|
if (status & SELF_TEST_FAILED) {
|
|
printk(KERN_ERR "%s%d: adapter self-test failed.\n", dev->name, instance);
|
|
goto error_iounmap;
|
|
}
|
|
/*
|
|
* Check to see if the monitor panic'd while booting.
|
|
*/
|
|
if (status & MONITOR_PANIC) {
|
|
printk(KERN_ERR "%s%d: adapter monitor panic.\n", dev->name, instance);
|
|
goto error_iounmap;
|
|
}
|
|
start = jiffies;
|
|
/*
|
|
* Wait for the adapter to be up and running. Wait up to 3 minutes
|
|
*/
|
|
while (!((status = rx_readl(dev, MUnit.OMRx[0])) & KERNEL_UP_AND_RUNNING))
|
|
{
|
|
if ((restart &&
|
|
(status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC))) ||
|
|
time_after(jiffies, start+HZ*startup_timeout)) {
|
|
printk(KERN_ERR "%s%d: adapter kernel failed to start, init status = %lx.\n",
|
|
dev->name, instance, status);
|
|
goto error_iounmap;
|
|
}
|
|
if (!restart &&
|
|
((status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC)) ||
|
|
time_after(jiffies, start + HZ *
|
|
((startup_timeout > 60)
|
|
? (startup_timeout - 60)
|
|
: (startup_timeout / 2))))) {
|
|
if (likely(!aac_rx_restart_adapter(dev,
|
|
aac_rx_check_health(dev), IOP_HWSOFT_RESET)))
|
|
start = jiffies;
|
|
++restart;
|
|
}
|
|
msleep(1);
|
|
}
|
|
if (restart && aac_commit)
|
|
aac_commit = 1;
|
|
/*
|
|
* Fill in the common function dispatch table.
|
|
*/
|
|
dev->a_ops.adapter_interrupt = aac_rx_interrupt_adapter;
|
|
dev->a_ops.adapter_disable_int = aac_rx_disable_interrupt;
|
|
dev->a_ops.adapter_notify = aac_rx_notify_adapter;
|
|
dev->a_ops.adapter_sync_cmd = rx_sync_cmd;
|
|
dev->a_ops.adapter_check_health = aac_rx_check_health;
|
|
dev->a_ops.adapter_restart = aac_rx_restart_adapter;
|
|
dev->a_ops.adapter_start = aac_rx_start_adapter;
|
|
|
|
/*
|
|
* First clear out all interrupts. Then enable the one's that we
|
|
* can handle.
|
|
*/
|
|
aac_adapter_comm(dev, AAC_COMM_PRODUCER);
|
|
aac_adapter_disable_int(dev);
|
|
rx_writel(dev, MUnit.ODR, 0xffffffff);
|
|
aac_adapter_enable_int(dev);
|
|
|
|
if (aac_init_adapter(dev) == NULL)
|
|
goto error_iounmap;
|
|
aac_adapter_comm(dev, dev->comm_interface);
|
|
dev->sync_mode = 0; /* sync. mode not supported */
|
|
dev->msi = aac_msi && !pci_enable_msi(dev->pdev);
|
|
if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr,
|
|
IRQF_SHARED, "aacraid", dev) < 0) {
|
|
if (dev->msi)
|
|
pci_disable_msi(dev->pdev);
|
|
printk(KERN_ERR "%s%d: Interrupt unavailable.\n",
|
|
name, instance);
|
|
goto error_iounmap;
|
|
}
|
|
dev->dbg_base = dev->base_start;
|
|
dev->dbg_base_mapped = dev->base;
|
|
dev->dbg_size = dev->base_size;
|
|
|
|
aac_adapter_enable_int(dev);
|
|
/*
|
|
* Tell the adapter that all is configured, and it can
|
|
* start accepting requests
|
|
*/
|
|
aac_rx_start_adapter(dev);
|
|
|
|
return 0;
|
|
|
|
error_iounmap:
|
|
|
|
return -1;
|
|
}
|
|
|
|
int aac_rx_init(struct aac_dev *dev)
|
|
{
|
|
/*
|
|
* Fill in the function dispatch table.
|
|
*/
|
|
dev->a_ops.adapter_ioremap = aac_rx_ioremap;
|
|
dev->a_ops.adapter_comm = aac_rx_select_comm;
|
|
|
|
return _aac_rx_init(dev);
|
|
}
|