Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/scsi/aacraid/rkt.c b/drivers/scsi/aacraid/rkt.c
new file mode 100644
index 0000000..1b8ed47
--- /dev/null
+++ b/drivers/scsi/aacraid/rkt.c
@@ -0,0 +1,440 @@
+/*
+ * Adaptec AAC series RAID controller driver
+ * (c) Copyright 2001 Red Hat Inc. <alan@redhat.com>
+ *
+ * based on the old aacraid driver that is..
+ * Adaptec aacraid device driver for Linux.
+ *
+ * Copyright (c) 2000 Adaptec, Inc. (aacraid@adaptec.com)
+ *
+ * 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, 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. 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; see the file COPYING. If not, write to
+ * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Module Name:
+ * rkt.c
+ *
+ * Abstract: Hardware miniport for Drawbridge specific hardware functions.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/pci.h>
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/blkdev.h>
+#include <linux/delay.h>
+#include <linux/completion.h>
+#include <linux/time.h>
+#include <linux/interrupt.h>
+#include <asm/semaphore.h>
+
+#include <scsi/scsi_host.h>
+
+#include "aacraid.h"
+
+static irqreturn_t aac_rkt_intr(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct aac_dev *dev = dev_id;
+ unsigned long bellbits;
+ u8 intstat, mask;
+ intstat = rkt_readb(dev, MUnit.OISR);
+ /*
+ * Read mask and invert because drawbridge is reversed.
+ * This allows us to only service interrupts that have
+ * been enabled.
+ */
+ mask = ~(dev->OIMR);
+ /* Check to see if this is our interrupt. If it isn't just return */
+ if (intstat & mask)
+ {
+ bellbits = rkt_readl(dev, OutboundDoorbellReg);
+ if (bellbits & DoorBellPrintfReady) {
+ aac_printf(dev, rkt_readl(dev, IndexRegs.Mailbox[5]));
+ rkt_writel(dev, MUnit.ODR,DoorBellPrintfReady);
+ rkt_writel(dev, InboundDoorbellReg,DoorBellPrintfDone);
+ }
+ else if (bellbits & DoorBellAdapterNormCmdReady) {
+ rkt_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdReady);
+ aac_command_normal(&dev->queues->queue[HostNormCmdQueue]);
+ }
+ else if (bellbits & DoorBellAdapterNormRespReady) {
+ aac_response_normal(&dev->queues->queue[HostNormRespQueue]);
+ rkt_writel(dev, MUnit.ODR,DoorBellAdapterNormRespReady);
+ }
+ else if (bellbits & DoorBellAdapterNormCmdNotFull) {
+ rkt_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdNotFull);
+ }
+ else if (bellbits & DoorBellAdapterNormRespNotFull) {
+ rkt_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdNotFull);
+ rkt_writel(dev, MUnit.ODR, DoorBellAdapterNormRespNotFull);
+ }
+ return IRQ_HANDLED;
+ }
+ return IRQ_NONE;
+}
+
+/**
+ * rkt_sync_cmd - send a command and wait
+ * @dev: Adapter
+ * @command: Command to execute
+ * @p1: first parameter
+ * @ret: adapter status
+ *
+ * This routine will send a synchronous command to the adapter and wait
+ * for its completion.
+ */
+
+static int rkt_sync_cmd(struct aac_dev *dev, u32 command, u32 p1, u32 *status)
+{
+ unsigned long start;
+ int ok;
+ /*
+ * Write the command into Mailbox 0
+ */
+ rkt_writel(dev, InboundMailbox0, command);
+ /*
+ * Write the parameters into Mailboxes 1 - 4
+ */
+ rkt_writel(dev, InboundMailbox1, p1);
+ rkt_writel(dev, InboundMailbox2, 0);
+ rkt_writel(dev, InboundMailbox3, 0);
+ rkt_writel(dev, InboundMailbox4, 0);
+ /*
+ * Clear the synch command doorbell to start on a clean slate.
+ */
+ rkt_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
+ /*
+ * Disable doorbell interrupts
+ */
+ rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
+ /*
+ * Force the completion of the mask register write before issuing
+ * the interrupt.
+ */
+ rkt_readb (dev, MUnit.OIMR);
+ /*
+ * Signal that there is a new synch command
+ */
+ rkt_writel(dev, InboundDoorbellReg, INBOUNDDOORBELL_0);
+
+ ok = 0;
+ start = jiffies;
+
+ /*
+ * Wait up to 30 seconds
+ */
+ while (time_before(jiffies, start+30*HZ))
+ {
+ udelay(5); /* Delay 5 microseconds to let Mon960 get info. */
+ /*
+ * Mon960 will set doorbell0 bit when it has completed the command.
+ */
+ if (rkt_readl(dev, OutboundDoorbellReg) & OUTBOUNDDOORBELL_0) {
+ /*
+ * Clear the doorbell.
+ */
+ rkt_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
+ ok = 1;
+ break;
+ }
+ /*
+ * Yield the processor in case we are slow
+ */
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(1);
+ }
+ if (ok != 1) {
+ /*
+ * Restore interrupt mask even though we timed out
+ */
+ rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
+ return -ETIMEDOUT;
+ }
+ /*
+ * Pull the synch status from Mailbox 0.
+ */
+ if (status)
+ *status = rkt_readl(dev, IndexRegs.Mailbox[0]);
+ /*
+ * Clear the synch command doorbell.
+ */
+ rkt_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
+ /*
+ * Restore interrupt mask
+ */
+ rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
+ return 0;
+
+}
+
+/**
+ * aac_rkt_interrupt_adapter - interrupt adapter
+ * @dev: Adapter
+ *
+ * Send an interrupt to the i960 and breakpoint it.
+ */
+
+static void aac_rkt_interrupt_adapter(struct aac_dev *dev)
+{
+ u32 ret;
+ rkt_sync_cmd(dev, BREAKPOINT_REQUEST, 0, &ret);
+}
+
+/**
+ * aac_rkt_notify_adapter - send an event to the adapter
+ * @dev: Adapter
+ * @event: Event to send
+ *
+ * Notify the i960 that something it probably cares about has
+ * happened.
+ */
+
+static void aac_rkt_notify_adapter(struct aac_dev *dev, u32 event)
+{
+ switch (event) {
+
+ case AdapNormCmdQue:
+ rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_1);
+ break;
+ case HostNormRespNotFull:
+ rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_4);
+ break;
+ case AdapNormRespQue:
+ rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_2);
+ break;
+ case HostNormCmdNotFull:
+ rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_3);
+ break;
+ case HostShutdown:
+// rkt_sync_cmd(dev, HOST_CRASHING, 0, 0, 0, 0, &ret);
+ break;
+ case FastIo:
+ rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_6);
+ break;
+ case AdapPrintfDone:
+ rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_5);
+ break;
+ default:
+ BUG();
+ break;
+ }
+}
+
+/**
+ * aac_rkt_start_adapter - activate adapter
+ * @dev: Adapter
+ *
+ * Start up processing on an i960 based AAC adapter
+ */
+
+static void aac_rkt_start_adapter(struct aac_dev *dev)
+{
+ u32 status;
+ struct aac_init *init;
+
+ init = dev->init;
+ init->HostElapsedSeconds = cpu_to_le32(get_seconds());
+ /*
+ * Tell the adapter we are back and up and running so it will scan
+ * its command queues and enable our interrupts
+ */
+ dev->irq_mask = (DoorBellPrintfReady | OUTBOUNDDOORBELL_1 | OUTBOUNDDOORBELL_2 | OUTBOUNDDOORBELL_3 | OUTBOUNDDOORBELL_4);
+ /*
+ * First clear out all interrupts. Then enable the one's that we
+ * can handle.
+ */
+ rkt_writeb(dev, MUnit.OIMR, 0xff);
+ rkt_writel(dev, MUnit.ODR, 0xffffffff);
+// rkt_writeb(dev, MUnit.OIMR, ~(u8)OUTBOUND_DOORBELL_INTERRUPT_MASK);
+ rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
+
+ // We can only use a 32 bit address here
+ rkt_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, (u32)(ulong)dev->init_pa, &status);
+}
+
+/**
+ * aac_rkt_check_health
+ * @dev: device to check if healthy
+ *
+ * Will attempt to determine if the specified adapter is alive and
+ * capable of handling requests, returning 0 if alive.
+ */
+static int aac_rkt_check_health(struct aac_dev *dev)
+{
+ u32 status = rkt_readl(dev, MUnit.OMRx[0]);
+
+ /*
+ * Check to see if the board failed any self tests.
+ */
+ if (status & SELF_TEST_FAILED)
+ return -1;
+ /*
+ * Check to see if the board panic'd.
+ */
+ if (status & KERNEL_PANIC) {
+ char * buffer;
+ struct POSTSTATUS {
+ u32 Post_Command;
+ u32 Post_Address;
+ } * post;
+ dma_addr_t paddr, baddr;
+ int ret;
+
+ if ((status & 0xFF000000L) == 0xBC000000L)
+ return (status >> 16) & 0xFF;
+ buffer = pci_alloc_consistent(dev->pdev, 512, &baddr);
+ ret = -2;
+ if (buffer == NULL)
+ return ret;
+ post = pci_alloc_consistent(dev->pdev,
+ sizeof(struct POSTSTATUS), &paddr);
+ if (post == NULL) {
+ pci_free_consistent(dev->pdev, 512, buffer, baddr);
+ return ret;
+ }
+ memset(buffer, 0, 512);
+ post->Post_Command = cpu_to_le32(COMMAND_POST_RESULTS);
+ post->Post_Address = cpu_to_le32(baddr);
+ rkt_writel(dev, MUnit.IMRx[0], paddr);
+ rkt_sync_cmd(dev, COMMAND_POST_RESULTS, baddr, &status);
+ pci_free_consistent(dev->pdev, sizeof(struct POSTSTATUS),
+ post, paddr);
+ if ((buffer[0] == '0') && (buffer[1] == 'x')) {
+ ret = (buffer[2] <= '9') ? (buffer[2] - '0') : (buffer[2] - 'A' + 10);
+ ret <<= 4;
+ ret += (buffer[3] <= '9') ? (buffer[3] - '0') : (buffer[3] - 'A' + 10);
+ }
+ pci_free_consistent(dev->pdev, 512, buffer, baddr);
+ return ret;
+ }
+ /*
+ * Wait for the adapter to be up and running.
+ */
+ if (!(status & KERNEL_UP_AND_RUNNING))
+ return -3;
+ /*
+ * Everything is OK
+ */
+ return 0;
+}
+
+/**
+ * aac_rkt_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_rkt_init(struct aac_dev *dev)
+{
+ unsigned long start;
+ unsigned long status;
+ int instance;
+ const char * name;
+
+ instance = dev->id;
+ name = dev->name;
+
+ /*
+ * Map in the registers from the adapter.
+ */
+ if((dev->regs.rkt = ioremap((unsigned long)dev->scsi_host_ptr->base, 8192))==NULL)
+ {
+ printk(KERN_WARNING "aacraid: unable to map i960.\n" );
+ goto error_iounmap;
+ }
+ /*
+ * Check to see if the board failed any self tests.
+ */
+ if (rkt_readl(dev, MUnit.OMRx[0]) & 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 (rkt_readl(dev, MUnit.OMRx[0]) & MONITOR_PANIC) {
+ printk(KERN_ERR "%s%d: adapter monitor panic.\n", dev->name, instance);
+ goto error_iounmap;
+ }
+ /*
+ * Check to see if the board panic'd while booting.
+ */
+ if (rkt_readl(dev, MUnit.OMRx[0]) & KERNEL_PANIC) {
+ printk(KERN_ERR "%s%d: adapter kernel panic'd.\n", dev->name, instance);
+ goto error_iounmap;
+ }
+ start = jiffies;
+ /*
+ * Wait for the adapter to be up and running. Wait up to 3 minutes
+ */
+ while (!(rkt_readl(dev, MUnit.OMRx[0]) & KERNEL_UP_AND_RUNNING))
+ {
+ if(time_after(jiffies, start+180*HZ))
+ {
+ status = rkt_readl(dev, MUnit.OMRx[0]);
+ printk(KERN_ERR "%s%d: adapter kernel failed to start, init status = %lx.\n",
+ dev->name, instance, status);
+ goto error_iounmap;
+ }
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(1);
+ }
+ if (request_irq(dev->scsi_host_ptr->irq, aac_rkt_intr, SA_SHIRQ|SA_INTERRUPT, "aacraid", (void *)dev)<0)
+ {
+ printk(KERN_ERR "%s%d: Interrupt unavailable.\n", name, instance);
+ goto error_iounmap;
+ }
+ /*
+ * Fill in the function dispatch table.
+ */
+ dev->a_ops.adapter_interrupt = aac_rkt_interrupt_adapter;
+ dev->a_ops.adapter_notify = aac_rkt_notify_adapter;
+ dev->a_ops.adapter_sync_cmd = rkt_sync_cmd;
+ dev->a_ops.adapter_check_health = aac_rkt_check_health;
+
+ if (aac_init_adapter(dev) == NULL)
+ goto error_irq;
+ /*
+ * Start any kernel threads needed
+ */
+ dev->thread_pid = kernel_thread((int (*)(void *))aac_command_thread, dev, 0);
+ if(dev->thread_pid < 0)
+ {
+ printk(KERN_ERR "aacraid: Unable to create rkt thread.\n");
+ goto error_kfree;
+ }
+ /*
+ * Tell the adapter that all is configured, and it can start
+ * accepting requests
+ */
+ aac_rkt_start_adapter(dev);
+ return 0;
+
+error_kfree:
+ kfree(dev->queues);
+
+error_irq:
+ free_irq(dev->scsi_host_ptr->irq, (void *)dev);
+
+error_iounmap:
+ iounmap(dev->regs.rkt);
+
+ return -1;
+}