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/commctrl.c b/drivers/scsi/aacraid/commctrl.c
new file mode 100644
index 0000000..30dd1f7
--- /dev/null
+++ b/drivers/scsi/aacraid/commctrl.c
@@ -0,0 +1,683 @@
+/*
+ * 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:
+ * commctrl.c
+ *
+ * Abstract: Contains all routines for control of the AFA comm layer
+ *
+ */
+
+#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/completion.h>
+#include <linux/dma-mapping.h>
+#include <linux/blkdev.h>
+#include <asm/semaphore.h>
+#include <asm/uaccess.h>
+
+#include "aacraid.h"
+
+/**
+ * ioctl_send_fib - send a FIB from userspace
+ * @dev: adapter is being processed
+ * @arg: arguments to the ioctl call
+ *
+ * This routine sends a fib to the adapter on behalf of a user level
+ * program.
+ */
+
+static int ioctl_send_fib(struct aac_dev * dev, void __user *arg)
+{
+ struct hw_fib * kfib;
+ struct fib *fibptr;
+
+ fibptr = fib_alloc(dev);
+ if(fibptr == NULL)
+ return -ENOMEM;
+
+ kfib = fibptr->hw_fib;
+ /*
+ * First copy in the header so that we can check the size field.
+ */
+ if (copy_from_user((void *)kfib, arg, sizeof(struct aac_fibhdr))) {
+ fib_free(fibptr);
+ return -EFAULT;
+ }
+ /*
+ * Since we copy based on the fib header size, make sure that we
+ * will not overrun the buffer when we copy the memory. Return
+ * an error if we would.
+ */
+ if (le16_to_cpu(kfib->header.Size) >
+ sizeof(struct hw_fib) - sizeof(struct aac_fibhdr)) {
+ fib_free(fibptr);
+ return -EINVAL;
+ }
+
+ if (copy_from_user(kfib, arg, le16_to_cpu(kfib->header.Size) +
+ sizeof(struct aac_fibhdr))) {
+ fib_free(fibptr);
+ return -EFAULT;
+ }
+
+ if (kfib->header.Command == cpu_to_le32(TakeABreakPt)) {
+ aac_adapter_interrupt(dev);
+ /*
+ * Since we didn't really send a fib, zero out the state to allow
+ * cleanup code not to assert.
+ */
+ kfib->header.XferState = 0;
+ } else {
+ int retval = fib_send(kfib->header.Command, fibptr,
+ le16_to_cpu(kfib->header.Size) , FsaNormal,
+ 1, 1, NULL, NULL);
+ if (retval) {
+ fib_free(fibptr);
+ return retval;
+ }
+ if (fib_complete(fibptr) != 0) {
+ fib_free(fibptr);
+ return -EINVAL;
+ }
+ }
+ /*
+ * Make sure that the size returned by the adapter (which includes
+ * the header) is less than or equal to the size of a fib, so we
+ * don't corrupt application data. Then copy that size to the user
+ * buffer. (Don't try to add the header information again, since it
+ * was already included by the adapter.)
+ */
+
+ if (copy_to_user(arg, (void *)kfib, kfib->header.Size)) {
+ fib_free(fibptr);
+ return -EFAULT;
+ }
+ fib_free(fibptr);
+ return 0;
+}
+
+/**
+ * open_getadapter_fib - Get the next fib
+ *
+ * This routine will get the next Fib, if available, from the AdapterFibContext
+ * passed in from the user.
+ */
+
+static int open_getadapter_fib(struct aac_dev * dev, void __user *arg)
+{
+ struct aac_fib_context * fibctx;
+ int status;
+
+ fibctx = kmalloc(sizeof(struct aac_fib_context), GFP_KERNEL);
+ if (fibctx == NULL) {
+ status = -ENOMEM;
+ } else {
+ unsigned long flags;
+ struct list_head * entry;
+ struct aac_fib_context * context;
+
+ fibctx->type = FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT;
+ fibctx->size = sizeof(struct aac_fib_context);
+ /*
+ * Yes yes, I know this could be an index, but we have a
+ * better guarantee of uniqueness for the locked loop below.
+ * Without the aid of a persistent history, this also helps
+ * reduce the chance that the opaque context would be reused.
+ */
+ fibctx->unique = (u32)((ulong)fibctx & 0xFFFFFFFF);
+ /*
+ * Initialize the mutex used to wait for the next AIF.
+ */
+ init_MUTEX_LOCKED(&fibctx->wait_sem);
+ fibctx->wait = 0;
+ /*
+ * Initialize the fibs and set the count of fibs on
+ * the list to 0.
+ */
+ fibctx->count = 0;
+ INIT_LIST_HEAD(&fibctx->fib_list);
+ fibctx->jiffies = jiffies/HZ;
+ /*
+ * Now add this context onto the adapter's
+ * AdapterFibContext list.
+ */
+ spin_lock_irqsave(&dev->fib_lock, flags);
+ /* Ensure that we have a unique identifier */
+ entry = dev->fib_list.next;
+ while (entry != &dev->fib_list) {
+ context = list_entry(entry, struct aac_fib_context, next);
+ if (context->unique == fibctx->unique) {
+ /* Not unique (32 bits) */
+ fibctx->unique++;
+ entry = dev->fib_list.next;
+ } else {
+ entry = entry->next;
+ }
+ }
+ list_add_tail(&fibctx->next, &dev->fib_list);
+ spin_unlock_irqrestore(&dev->fib_lock, flags);
+ if (copy_to_user(arg, &fibctx->unique,
+ sizeof(fibctx->unique))) {
+ status = -EFAULT;
+ } else {
+ status = 0;
+ }
+ }
+ return status;
+}
+
+/**
+ * next_getadapter_fib - get the next fib
+ * @dev: adapter to use
+ * @arg: ioctl argument
+ *
+ * This routine will get the next Fib, if available, from the AdapterFibContext
+ * passed in from the user.
+ */
+
+static int next_getadapter_fib(struct aac_dev * dev, void __user *arg)
+{
+ struct fib_ioctl f;
+ struct fib *fib;
+ struct aac_fib_context *fibctx;
+ int status;
+ struct list_head * entry;
+ unsigned long flags;
+
+ if(copy_from_user((void *)&f, arg, sizeof(struct fib_ioctl)))
+ return -EFAULT;
+ /*
+ * Verify that the HANDLE passed in was a valid AdapterFibContext
+ *
+ * Search the list of AdapterFibContext addresses on the adapter
+ * to be sure this is a valid address
+ */
+ entry = dev->fib_list.next;
+ fibctx = NULL;
+
+ while (entry != &dev->fib_list) {
+ fibctx = list_entry(entry, struct aac_fib_context, next);
+ /*
+ * Extract the AdapterFibContext from the Input parameters.
+ */
+ if (fibctx->unique == f.fibctx) { /* We found a winner */
+ break;
+ }
+ entry = entry->next;
+ fibctx = NULL;
+ }
+ if (!fibctx) {
+ dprintk ((KERN_INFO "Fib Context not found\n"));
+ return -EINVAL;
+ }
+
+ if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) ||
+ (fibctx->size != sizeof(struct aac_fib_context))) {
+ dprintk ((KERN_INFO "Fib Context corrupt?\n"));
+ return -EINVAL;
+ }
+ status = 0;
+ spin_lock_irqsave(&dev->fib_lock, flags);
+ /*
+ * If there are no fibs to send back, then either wait or return
+ * -EAGAIN
+ */
+return_fib:
+ if (!list_empty(&fibctx->fib_list)) {
+ struct list_head * entry;
+ /*
+ * Pull the next fib from the fibs
+ */
+ entry = fibctx->fib_list.next;
+ list_del(entry);
+
+ fib = list_entry(entry, struct fib, fiblink);
+ fibctx->count--;
+ spin_unlock_irqrestore(&dev->fib_lock, flags);
+ if (copy_to_user(f.fib, fib->hw_fib, sizeof(struct hw_fib))) {
+ kfree(fib->hw_fib);
+ kfree(fib);
+ return -EFAULT;
+ }
+ /*
+ * Free the space occupied by this copy of the fib.
+ */
+ kfree(fib->hw_fib);
+ kfree(fib);
+ status = 0;
+ fibctx->jiffies = jiffies/HZ;
+ } else {
+ spin_unlock_irqrestore(&dev->fib_lock, flags);
+ if (f.wait) {
+ if(down_interruptible(&fibctx->wait_sem) < 0) {
+ status = -EINTR;
+ } else {
+ /* Lock again and retry */
+ spin_lock_irqsave(&dev->fib_lock, flags);
+ goto return_fib;
+ }
+ } else {
+ status = -EAGAIN;
+ }
+ }
+ return status;
+}
+
+int aac_close_fib_context(struct aac_dev * dev, struct aac_fib_context * fibctx)
+{
+ struct fib *fib;
+
+ /*
+ * First free any FIBs that have not been consumed.
+ */
+ while (!list_empty(&fibctx->fib_list)) {
+ struct list_head * entry;
+ /*
+ * Pull the next fib from the fibs
+ */
+ entry = fibctx->fib_list.next;
+ list_del(entry);
+ fib = list_entry(entry, struct fib, fiblink);
+ fibctx->count--;
+ /*
+ * Free the space occupied by this copy of the fib.
+ */
+ kfree(fib->hw_fib);
+ kfree(fib);
+ }
+ /*
+ * Remove the Context from the AdapterFibContext List
+ */
+ list_del(&fibctx->next);
+ /*
+ * Invalidate context
+ */
+ fibctx->type = 0;
+ /*
+ * Free the space occupied by the Context
+ */
+ kfree(fibctx);
+ return 0;
+}
+
+/**
+ * close_getadapter_fib - close down user fib context
+ * @dev: adapter
+ * @arg: ioctl arguments
+ *
+ * This routine will close down the fibctx passed in from the user.
+ */
+
+static int close_getadapter_fib(struct aac_dev * dev, void __user *arg)
+{
+ struct aac_fib_context *fibctx;
+ int status;
+ unsigned long flags;
+ struct list_head * entry;
+
+ /*
+ * Verify that the HANDLE passed in was a valid AdapterFibContext
+ *
+ * Search the list of AdapterFibContext addresses on the adapter
+ * to be sure this is a valid address
+ */
+
+ entry = dev->fib_list.next;
+ fibctx = NULL;
+
+ while(entry != &dev->fib_list) {
+ fibctx = list_entry(entry, struct aac_fib_context, next);
+ /*
+ * Extract the fibctx from the input parameters
+ */
+ if (fibctx->unique == (u32)(unsigned long)arg) {
+ /* We found a winner */
+ break;
+ }
+ entry = entry->next;
+ fibctx = NULL;
+ }
+
+ if (!fibctx)
+ return 0; /* Already gone */
+
+ if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) ||
+ (fibctx->size != sizeof(struct aac_fib_context)))
+ return -EINVAL;
+ spin_lock_irqsave(&dev->fib_lock, flags);
+ status = aac_close_fib_context(dev, fibctx);
+ spin_unlock_irqrestore(&dev->fib_lock, flags);
+ return status;
+}
+
+/**
+ * check_revision - close down user fib context
+ * @dev: adapter
+ * @arg: ioctl arguments
+ *
+ * This routine returns the driver version.
+ * Under Linux, there have been no version incompatibilities, so this is
+ * simple!
+ */
+
+static int check_revision(struct aac_dev *dev, void __user *arg)
+{
+ struct revision response;
+
+ response.compat = 1;
+ response.version = dev->adapter_info.kernelrev;
+ response.build = dev->adapter_info.kernelbuild;
+
+ if (copy_to_user(arg, &response, sizeof(response)))
+ return -EFAULT;
+ return 0;
+}
+
+/**
+ *
+ * aac_send_raw_scb
+ *
+ */
+
+int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
+{
+ struct fib* srbfib;
+ int status;
+ struct aac_srb *srbcmd;
+ struct aac_srb __user *user_srb = arg;
+ struct aac_srb_reply __user *user_reply;
+ struct aac_srb_reply* reply;
+ u32 fibsize = 0;
+ u32 flags = 0;
+ s32 rcode = 0;
+ u32 data_dir;
+ void __user *sg_user[32];
+ void *sg_list[32];
+ u32 sg_indx = 0;
+ u32 byte_count = 0;
+ u32 actual_fibsize = 0;
+ int i;
+
+
+ if (!capable(CAP_SYS_ADMIN)){
+ printk(KERN_DEBUG"aacraid: No permission to send raw srb\n");
+ return -EPERM;
+ }
+ /*
+ * Allocate and initialize a Fib then setup a BlockWrite command
+ */
+ if (!(srbfib = fib_alloc(dev))) {
+ return -1;
+ }
+ fib_init(srbfib);
+
+ srbcmd = (struct aac_srb*) fib_data(srbfib);
+
+ if(copy_from_user(&fibsize, &user_srb->count,sizeof(u32))){
+ printk(KERN_DEBUG"aacraid: Could not copy data size from user\n");
+ rcode = -EFAULT;
+ goto cleanup;
+ }
+
+ if (fibsize > FIB_DATA_SIZE_IN_BYTES) {
+ rcode = -EINVAL;
+ goto cleanup;
+ }
+
+ if(copy_from_user(srbcmd, user_srb,fibsize)){
+ printk(KERN_DEBUG"aacraid: Could not copy srb from user\n");
+ rcode = -EFAULT;
+ goto cleanup;
+ }
+
+ user_reply = arg+fibsize;
+
+ flags = srbcmd->flags;
+ // Fix up srb for endian and force some values
+ srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi); // Force this
+ srbcmd->channel = cpu_to_le32(srbcmd->channel);
+ srbcmd->id = cpu_to_le32(srbcmd->id);
+ srbcmd->lun = cpu_to_le32(srbcmd->lun);
+ srbcmd->flags = cpu_to_le32(srbcmd->flags);
+ srbcmd->timeout = cpu_to_le32(srbcmd->timeout);
+ srbcmd->retry_limit =cpu_to_le32(0); // Obsolete parameter
+ srbcmd->cdb_size = cpu_to_le32(srbcmd->cdb_size);
+
+ switch (srbcmd->flags & (SRB_DataIn | SRB_DataOut)) {
+ case SRB_DataOut:
+ data_dir = DMA_TO_DEVICE;
+ break;
+ case (SRB_DataIn | SRB_DataOut):
+ data_dir = DMA_BIDIRECTIONAL;
+ break;
+ case SRB_DataIn:
+ data_dir = DMA_FROM_DEVICE;
+ break;
+ default:
+ data_dir = DMA_NONE;
+ }
+ if (dev->dac_support == 1) {
+ struct sgmap64* psg = (struct sgmap64*)&srbcmd->sg;
+ byte_count = 0;
+
+ /*
+ * This should also catch if user used the 32 bit sgmap
+ */
+ actual_fibsize = sizeof(struct aac_srb) -
+ sizeof(struct sgentry) + ((srbcmd->sg.count & 0xff) *
+ sizeof(struct sgentry64));
+ if(actual_fibsize != fibsize){ // User made a mistake - should not continue
+ printk(KERN_DEBUG"aacraid: Bad Size specified in Raw SRB command\n");
+ rcode = -EINVAL;
+ goto cleanup;
+ }
+ if ((data_dir == DMA_NONE) && psg->count) {
+ printk(KERN_DEBUG"aacraid: SG with no direction specified in Raw SRB command\n");
+ rcode = -EINVAL;
+ goto cleanup;
+ }
+
+ for (i = 0; i < psg->count; i++) {
+ dma_addr_t addr;
+ u64 le_addr;
+ void* p;
+ p = kmalloc(psg->sg[i].count,GFP_KERNEL|__GFP_DMA);
+ if(p == 0) {
+ printk(KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
+ psg->sg[i].count,i,psg->count);
+ rcode = -ENOMEM;
+ goto cleanup;
+ }
+ sg_user[i] = (void __user *)psg->sg[i].addr;
+ sg_list[i] = p; // save so we can clean up later
+ sg_indx = i;
+
+ if( flags & SRB_DataOut ){
+ if(copy_from_user(p,sg_user[i],psg->sg[i].count)){
+ printk(KERN_DEBUG"aacraid: Could not copy sg data from user\n");
+ rcode = -EFAULT;
+ goto cleanup;
+ }
+ }
+ addr = pci_map_single(dev->pdev, p, psg->sg[i].count, data_dir);
+
+ le_addr = cpu_to_le64(addr);
+ psg->sg[i].addr[1] = (u32)(le_addr>>32);
+ psg->sg[i].addr[0] = (u32)(le_addr & 0xffffffff);
+ psg->sg[i].count = cpu_to_le32(psg->sg[i].count);
+ byte_count += psg->sg[i].count;
+ }
+
+ srbcmd->count = cpu_to_le32(byte_count);
+ status = fib_send(ScsiPortCommand64, srbfib, actual_fibsize, FsaNormal, 1, 1,NULL,NULL);
+ } else {
+ struct sgmap* psg = &srbcmd->sg;
+ byte_count = 0;
+
+ actual_fibsize = sizeof (struct aac_srb) +
+ (((le32_to_cpu(srbcmd->sg.count) & 0xff) - 1) *
+ sizeof (struct sgentry));
+ if(actual_fibsize != fibsize){ // User made a mistake - should not continue
+ printk(KERN_DEBUG"aacraid: Bad Size specified in Raw SRB command\n");
+ rcode = -EINVAL;
+ goto cleanup;
+ }
+ if ((data_dir == DMA_NONE) && psg->count) {
+ printk(KERN_DEBUG"aacraid: SG with no direction specified in Raw SRB command\n");
+ rcode = -EINVAL;
+ goto cleanup;
+ }
+ for (i = 0; i < psg->count; i++) {
+ dma_addr_t addr;
+ void* p;
+ p = kmalloc(psg->sg[i].count,GFP_KERNEL);
+ if(p == 0) {
+ printk(KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
+ psg->sg[i].count,i,psg->count);
+ rcode = -ENOMEM;
+ goto cleanup;
+ }
+ sg_user[i] = (void __user *)(psg->sg[i].addr);
+ sg_list[i] = p; // save so we can clean up later
+ sg_indx = i;
+
+ if( flags & SRB_DataOut ){
+ if(copy_from_user(p,sg_user[i],psg->sg[i].count)){
+ printk(KERN_DEBUG"aacraid: Could not copy sg data from user\n");
+ rcode = -EFAULT;
+ goto cleanup;
+ }
+ }
+ addr = pci_map_single(dev->pdev, p, psg->sg[i].count, data_dir);
+
+ psg->sg[i].addr = cpu_to_le32(addr);
+ psg->sg[i].count = cpu_to_le32(psg->sg[i].count);
+ byte_count += psg->sg[i].count;
+ }
+ srbcmd->count = cpu_to_le32(byte_count);
+ status = fib_send(ScsiPortCommand, srbfib, actual_fibsize, FsaNormal, 1, 1, NULL, NULL);
+ }
+
+ if (status != 0){
+ printk(KERN_DEBUG"aacraid: Could not send raw srb fib to hba\n");
+ rcode = -1;
+ goto cleanup;
+ }
+
+ if( flags & SRB_DataIn ) {
+ for(i = 0 ; i <= sg_indx; i++){
+ if(copy_to_user(sg_user[i],sg_list[i],le32_to_cpu(srbcmd->sg.sg[i].count))){
+ printk(KERN_DEBUG"aacraid: Could not copy sg data to user\n");
+ rcode = -EFAULT;
+ goto cleanup;
+
+ }
+ }
+ }
+
+ reply = (struct aac_srb_reply *) fib_data(srbfib);
+ if(copy_to_user(user_reply,reply,sizeof(struct aac_srb_reply))){
+ printk(KERN_DEBUG"aacraid: Could not copy reply to user\n");
+ rcode = -EFAULT;
+ goto cleanup;
+ }
+
+cleanup:
+ for(i=0; i <= sg_indx; i++){
+ kfree(sg_list[i]);
+ }
+ fib_complete(srbfib);
+ fib_free(srbfib);
+
+ return rcode;
+}
+
+
+struct aac_pci_info {
+ u32 bus;
+ u32 slot;
+};
+
+
+int aac_get_pci_info(struct aac_dev* dev, void __user *arg)
+{
+ struct aac_pci_info pci_info;
+
+ pci_info.bus = dev->pdev->bus->number;
+ pci_info.slot = PCI_SLOT(dev->pdev->devfn);
+
+ if (copy_to_user(arg, &pci_info, sizeof(struct aac_pci_info))) {
+ printk(KERN_DEBUG "aacraid: Could not copy pci info\n");
+ return -EFAULT;
+ }
+ return 0;
+ }
+
+
+int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg)
+{
+ int status;
+
+ /*
+ * HBA gets first crack
+ */
+
+ status = aac_dev_ioctl(dev, cmd, arg);
+ if(status != -ENOTTY)
+ return status;
+
+ switch (cmd) {
+ case FSACTL_MINIPORT_REV_CHECK:
+ status = check_revision(dev, arg);
+ break;
+ case FSACTL_SENDFIB:
+ status = ioctl_send_fib(dev, arg);
+ break;
+ case FSACTL_OPEN_GET_ADAPTER_FIB:
+ status = open_getadapter_fib(dev, arg);
+ break;
+ case FSACTL_GET_NEXT_ADAPTER_FIB:
+ status = next_getadapter_fib(dev, arg);
+ break;
+ case FSACTL_CLOSE_GET_ADAPTER_FIB:
+ status = close_getadapter_fib(dev, arg);
+ break;
+ case FSACTL_SEND_RAW_SRB:
+ status = aac_send_raw_srb(dev,arg);
+ break;
+ case FSACTL_GET_PCI_INFO:
+ status = aac_get_pci_info(dev,arg);
+ break;
+ default:
+ status = -ENOTTY;
+ break;
+ }
+ return status;
+}
+
