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/sa.c b/drivers/scsi/aacraid/sa.c
new file mode 100644
index 0000000..bd6c307
--- /dev/null
+++ b/drivers/scsi/aacraid/sa.c
@@ -0,0 +1,374 @@
+/*
+ * 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:
+ * sa.c
+ *
+ * Abstract: Drawbridge specific support 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_sa_intr(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct aac_dev *dev = dev_id;
+ unsigned short intstat, mask;
+
+ intstat = sa_readw(dev, DoorbellReg_p);
+ /*
+ * Read mask and invert because drawbridge is reversed.
+ * This allows us to only service interrupts that have been enabled.
+ */
+ mask = ~(sa_readw(dev, SaDbCSR.PRISETIRQMASK));
+
+ /* Check to see if this is our interrupt. If it isn't just return */
+
+ if (intstat & mask) {
+ if (intstat & PrintfReady) {
+ aac_printf(dev, sa_readl(dev, Mailbox5));
+ sa_writew(dev, DoorbellClrReg_p, PrintfReady); /* clear PrintfReady */
+ sa_writew(dev, DoorbellReg_s, PrintfDone);
+ } else if (intstat & DOORBELL_1) { // dev -> Host Normal Command Ready
+ aac_command_normal(&dev->queues->queue[HostNormCmdQueue]);
+ sa_writew(dev, DoorbellClrReg_p, DOORBELL_1);
+ } else if (intstat & DOORBELL_2) { // dev -> Host Normal Response Ready
+ aac_response_normal(&dev->queues->queue[HostNormRespQueue]);
+ sa_writew(dev, DoorbellClrReg_p, DOORBELL_2);
+ } else if (intstat & DOORBELL_3) { // dev -> Host Normal Command Not Full
+ sa_writew(dev, DoorbellClrReg_p, DOORBELL_3);
+ } else if (intstat & DOORBELL_4) { // dev -> Host Normal Response Not Full
+ sa_writew(dev, DoorbellClrReg_p, DOORBELL_4);
+ }
+ return IRQ_HANDLED;
+ }
+ return IRQ_NONE;
+}
+
+/**
+ * aac_sa_notify_adapter - handle adapter notification
+ * @dev: Adapter that notification is for
+ * @event: Event to notidy
+ *
+ * Notify the adapter of an event
+ */
+
+void aac_sa_notify_adapter(struct aac_dev *dev, u32 event)
+{
+ switch (event) {
+
+ case AdapNormCmdQue:
+ sa_writew(dev, DoorbellReg_s,DOORBELL_1);
+ break;
+ case HostNormRespNotFull:
+ sa_writew(dev, DoorbellReg_s,DOORBELL_4);
+ break;
+ case AdapNormRespQue:
+ sa_writew(dev, DoorbellReg_s,DOORBELL_2);
+ break;
+ case HostNormCmdNotFull:
+ sa_writew(dev, DoorbellReg_s,DOORBELL_3);
+ break;
+ case HostShutdown:
+ //sa_sync_cmd(dev, HOST_CRASHING, 0, &ret);
+ break;
+ case FastIo:
+ sa_writew(dev, DoorbellReg_s,DOORBELL_6);
+ break;
+ case AdapPrintfDone:
+ sa_writew(dev, DoorbellReg_s,DOORBELL_5);
+ break;
+ default:
+ BUG();
+ break;
+ }
+}
+
+
+/**
+ * sa_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 sa_sync_cmd(struct aac_dev *dev, u32 command, u32 p1, u32 *ret)
+{
+ unsigned long start;
+ int ok;
+ /*
+ * Write the Command into Mailbox 0
+ */
+ sa_writel(dev, Mailbox0, command);
+ /*
+ * Write the parameters into Mailboxes 1 - 4
+ */
+ sa_writel(dev, Mailbox1, p1);
+ sa_writel(dev, Mailbox2, 0);
+ sa_writel(dev, Mailbox3, 0);
+ sa_writel(dev, Mailbox4, 0);
+ /*
+ * Clear the synch command doorbell to start on a clean slate.
+ */
+ sa_writew(dev, DoorbellClrReg_p, DOORBELL_0);
+ /*
+ * Signal that there is a new synch command
+ */
+ sa_writew(dev, DoorbellReg_s, DOORBELL_0);
+
+ ok = 0;
+ start = jiffies;
+
+ while(time_before(jiffies, start+30*HZ))
+ {
+ /*
+ * Delay 5uS so that the monitor gets access
+ */
+ udelay(5);
+ /*
+ * Mon110 will set doorbell0 bit when it has
+ * completed the command.
+ */
+ if(sa_readw(dev, DoorbellReg_p) & DOORBELL_0) {
+ ok = 1;
+ break;
+ }
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(1);
+ }
+
+ if (ok != 1)
+ return -ETIMEDOUT;
+ /*
+ * Clear the synch command doorbell.
+ */
+ sa_writew(dev, DoorbellClrReg_p, DOORBELL_0);
+ /*
+ * Pull the synch status from Mailbox 0.
+ */
+ if (ret)
+ *ret = sa_readl(dev, Mailbox0);
+ return 0;
+}
+
+/**
+ * aac_sa_interrupt_adapter - interrupt an adapter
+ * @dev: Which adapter to enable.
+ *
+ * Breakpoint an adapter.
+ */
+
+static void aac_sa_interrupt_adapter (struct aac_dev *dev)
+{
+ u32 ret;
+ sa_sync_cmd(dev, BREAKPOINT_REQUEST, 0, &ret);
+}
+
+/**
+ * aac_sa_start_adapter - activate adapter
+ * @dev: Adapter
+ *
+ * Start up processing on an ARM based AAC adapter
+ */
+
+static void aac_sa_start_adapter(struct aac_dev *dev)
+{
+ u32 ret;
+ struct aac_init *init;
+ /*
+ * Fill in the remaining pieces of the 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 = (PrintfReady | DOORBELL_1 | DOORBELL_2 | DOORBELL_3 | DOORBELL_4);
+ /*
+ * First clear out all interrupts. Then enable the one's that
+ * we can handle.
+ */
+ sa_writew(dev, SaDbCSR.PRISETIRQMASK, cpu_to_le16(0xffff));
+ sa_writew(dev, SaDbCSR.PRICLEARIRQMASK, (PrintfReady | DOORBELL_1 | DOORBELL_2 | DOORBELL_3 | DOORBELL_4));
+ /* We can only use a 32 bit address here */
+ sa_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, (u32)(ulong)dev->init_pa, &ret);
+}
+
+/**
+ * aac_sa_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_sa_check_health(struct aac_dev *dev)
+{
+ long status = sa_readl(dev, Mailbox7);
+
+ /*
+ * 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 while booting.
+ */
+ if (status & KERNEL_PANIC)
+ return -2;
+ /*
+ * Wait for the adapter to be up and running. Wait up to 3 minutes
+ */
+ if (!(status & KERNEL_UP_AND_RUNNING))
+ return -3;
+ /*
+ * Everything is OK
+ */
+ return 0;
+}
+
+/**
+ * aac_sa_init - initialize an ARM based AAC card
+ * @dev: device to configure
+ *
+ * Allocate and set up resources for the ARM based AAC variants. The
+ * device_interface in the commregion will be allocated and linked
+ * to the comm region.
+ */
+
+int aac_sa_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.sa = ioremap((unsigned long)dev->scsi_host_ptr->base, 8192))==NULL)
+ {
+ printk(KERN_WARNING "aacraid: unable to map ARM.\n" );
+ goto error_iounmap;
+ }
+ /*
+ * Check to see if the board failed any self tests.
+ */
+ if (sa_readl(dev, Mailbox7) & SELF_TEST_FAILED) {
+ printk(KERN_WARNING "%s%d: adapter self-test failed.\n", name, instance);
+ goto error_iounmap;
+ }
+ /*
+ * Check to see if the board panic'd while booting.
+ */
+ if (sa_readl(dev, Mailbox7) & KERNEL_PANIC) {
+ printk(KERN_WARNING "%s%d: adapter kernel panic'd.\n", name, instance);
+ goto error_iounmap;
+ }
+ start = jiffies;
+ /*
+ * Wait for the adapter to be up and running. Wait up to 3 minutes.
+ */
+ while (!(sa_readl(dev, Mailbox7) & KERNEL_UP_AND_RUNNING)) {
+ if (time_after(jiffies, start+180*HZ)) {
+ status = sa_readl(dev, Mailbox7);
+ printk(KERN_WARNING "%s%d: adapter kernel failed to start, init status = %lx.\n",
+ name, instance, status);
+ goto error_iounmap;
+ }
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(1);
+ }
+
+ if (request_irq(dev->scsi_host_ptr->irq, aac_sa_intr, SA_SHIRQ|SA_INTERRUPT, "aacraid", (void *)dev ) < 0) {
+ printk(KERN_WARNING "%s%d: Interrupt unavailable.\n", name, instance);
+ goto error_iounmap;
+ }
+
+ /*
+ * Fill in the function dispatch table.
+ */
+
+ dev->a_ops.adapter_interrupt = aac_sa_interrupt_adapter;
+ dev->a_ops.adapter_notify = aac_sa_notify_adapter;
+ dev->a_ops.adapter_sync_cmd = sa_sync_cmd;
+ dev->a_ops.adapter_check_health = aac_sa_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 command thread.\n");
+ goto error_kfree;
+ }
+
+ /*
+ * Tell the adapter that all is configure, and it can start
+ * accepting requests
+ */
+ aac_sa_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.sa);
+
+ return -1;
+}
+