diff options
Diffstat (limited to 'drivers/scsi/aacraid/commctrl.c')
| -rw-r--r-- | drivers/scsi/aacraid/commctrl.c | 1121 |
1 files changed, 1121 insertions, 0 deletions
diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c new file mode 100644 index 000000000..1b1da162f --- /dev/null +++ b/drivers/scsi/aacraid/commctrl.c @@ -0,0 +1,1121 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Adaptec AAC series RAID controller driver + * (c) Copyright 2001 Red Hat Inc. + * + * based on the old aacraid driver that is.. + * Adaptec aacraid device driver for Linux. + * + * Copyright (c) 2000-2010 Adaptec, Inc. + * 2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com) + * 2016-2017 Microsemi Corp. (aacraid@microsemi.com) + * + * 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/pci.h> +#include <linux/spinlock.h> +#include <linux/slab.h> +#include <linux/completion.h> +#include <linux/dma-mapping.h> +#include <linux/blkdev.h> +#include <linux/compat.h> +#include <linux/delay.h> /* ssleep prototype */ +#include <linux/kthread.h> +#include <linux/uaccess.h> +#include <scsi/scsi_host.h> + +#include "aacraid.h" + +# define AAC_DEBUG_PREAMBLE KERN_INFO +# define AAC_DEBUG_POSTAMBLE +/** + * 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; + struct hw_fib * hw_fib = (struct hw_fib *)0; + dma_addr_t hw_fib_pa = (dma_addr_t)0LL; + unsigned int size, osize; + int retval; + + if (dev->in_reset) { + return -EBUSY; + } + fibptr = aac_fib_alloc(dev); + if(fibptr == NULL) { + return -ENOMEM; + } + + kfib = fibptr->hw_fib_va; + /* + * First copy in the header so that we can check the size field. + */ + if (copy_from_user((void *)kfib, arg, sizeof(struct aac_fibhdr))) { + aac_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. + */ + osize = size = le16_to_cpu(kfib->header.Size) + + sizeof(struct aac_fibhdr); + if (size < le16_to_cpu(kfib->header.SenderSize)) + size = le16_to_cpu(kfib->header.SenderSize); + if (size > dev->max_fib_size) { + dma_addr_t daddr; + + if (size > 2048) { + retval = -EINVAL; + goto cleanup; + } + + kfib = dma_alloc_coherent(&dev->pdev->dev, size, &daddr, + GFP_KERNEL); + if (!kfib) { + retval = -ENOMEM; + goto cleanup; + } + + /* Highjack the hw_fib */ + hw_fib = fibptr->hw_fib_va; + hw_fib_pa = fibptr->hw_fib_pa; + fibptr->hw_fib_va = kfib; + fibptr->hw_fib_pa = daddr; + memset(((char *)kfib) + dev->max_fib_size, 0, size - dev->max_fib_size); + memcpy(kfib, hw_fib, dev->max_fib_size); + } + + if (copy_from_user(kfib, arg, size)) { + retval = -EFAULT; + goto cleanup; + } + + /* Sanity check the second copy */ + if ((osize != le16_to_cpu(kfib->header.Size) + + sizeof(struct aac_fibhdr)) + || (size < le16_to_cpu(kfib->header.SenderSize))) { + retval = -EINVAL; + goto cleanup; + } + + if (kfib->header.Command == cpu_to_le16(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 { + retval = aac_fib_send(le16_to_cpu(kfib->header.Command), fibptr, + le16_to_cpu(kfib->header.Size) , FsaNormal, + 1, 1, NULL, NULL); + if (retval) { + goto cleanup; + } + if (aac_fib_complete(fibptr) != 0) { + retval = -EINVAL; + goto cleanup; + } + } + /* + * 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.) + */ + + retval = 0; + if (copy_to_user(arg, (void *)kfib, size)) + retval = -EFAULT; +cleanup: + if (hw_fib) { + dma_free_coherent(&dev->pdev->dev, size, kfib, + fibptr->hw_fib_pa); + fibptr->hw_fib_pa = hw_fib_pa; + fibptr->hw_fib_va = hw_fib; + } + if (retval != -ERESTARTSYS) + aac_fib_free(fibptr); + return retval; +} + +/** + * open_getadapter_fib - Get the next fib + * @dev: adapter is being processed + * @arg: arguments to the open call + * + * 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_completion(&fibctx->completion); + 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; +} + +struct compat_fib_ioctl { + u32 fibctx; + s32 wait; + compat_uptr_t fib; +}; + +/** + * 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 (in_compat_syscall()) { + struct compat_fib_ioctl cf; + + if (copy_from_user(&cf, arg, sizeof(struct compat_fib_ioctl))) + return -EFAULT; + + f.fibctx = cf.fibctx; + f.wait = cf.wait; + f.fib = compat_ptr(cf.fib); + } else { + if (copy_from_user(&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 + */ + spin_lock_irqsave(&dev->fib_lock, flags); + 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) { + spin_unlock_irqrestore(&dev->fib_lock, flags); + 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))) { + spin_unlock_irqrestore(&dev->fib_lock, flags); + dprintk ((KERN_INFO "Fib Context corrupt?\n")); + return -EINVAL; + } + status = 0; + /* + * If there are no fibs to send back, then either wait or return + * -EAGAIN + */ +return_fib: + if (!list_empty(&fibctx->fib_list)) { + /* + * 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_va, sizeof(struct hw_fib))) { + kfree(fib->hw_fib_va); + kfree(fib); + return -EFAULT; + } + /* + * Free the space occupied by this copy of the fib. + */ + kfree(fib->hw_fib_va); + kfree(fib); + status = 0; + } else { + spin_unlock_irqrestore(&dev->fib_lock, flags); + /* If someone killed the AIF aacraid thread, restart it */ + status = !dev->aif_thread; + if (status && !dev->in_reset && dev->queues && dev->fsa_dev) { + /* Be paranoid, be very paranoid! */ + kthread_stop(dev->thread); + ssleep(1); + dev->aif_thread = 0; + dev->thread = kthread_run(aac_command_thread, dev, + "%s", dev->name); + ssleep(1); + } + if (f.wait) { + if (wait_for_completion_interruptible(&fibctx->completion) < 0) { + status = -ERESTARTSYS; + } else { + /* Lock again and retry */ + spin_lock_irqsave(&dev->fib_lock, flags); + goto return_fib; + } + } else { + status = -EAGAIN; + } + } + fibctx->jiffies = jiffies/HZ; + 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_va); + 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)(uintptr_t)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; + char *driver_version = aac_driver_version; + u32 version; + + response.compat = 1; + version = (simple_strtol(driver_version, + &driver_version, 10) << 24) | 0x00000400; + version += simple_strtol(driver_version + 1, &driver_version, 10) << 16; + version += simple_strtol(driver_version + 1, NULL, 10); + response.version = cpu_to_le32(version); +# ifdef AAC_DRIVER_BUILD + response.build = cpu_to_le32(AAC_DRIVER_BUILD); +# else + response.build = cpu_to_le32(9999); +# endif + + if (copy_to_user(arg, &response, sizeof(response))) + return -EFAULT; + return 0; +} + + +/** + * aac_send_raw_scb + * @dev: adapter is being processed + * @arg: arguments to the send call + */ +static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg) +{ + struct fib* srbfib; + int status; + struct aac_srb *srbcmd = NULL; + struct aac_hba_cmd_req *hbacmd = NULL; + struct user_aac_srb *user_srbcmd = NULL; + struct user_aac_srb __user *user_srb = arg; + struct aac_srb_reply __user *user_reply; + u32 chn; + u32 fibsize = 0; + u32 flags = 0; + s32 rcode = 0; + u32 data_dir; + void __user *sg_user[HBA_MAX_SG_EMBEDDED]; + void *sg_list[HBA_MAX_SG_EMBEDDED]; + u32 sg_count[HBA_MAX_SG_EMBEDDED]; + u32 sg_indx = 0; + u32 byte_count = 0; + u32 actual_fibsize64, actual_fibsize = 0; + int i; + int is_native_device; + u64 address; + + + if (dev->in_reset) { + dprintk((KERN_DEBUG"aacraid: send raw srb -EBUSY\n")); + return -EBUSY; + } + if (!capable(CAP_SYS_ADMIN)){ + dprintk((KERN_DEBUG"aacraid: No permission to send raw srb\n")); + return -EPERM; + } + /* + * Allocate and initialize a Fib then setup a SRB command + */ + if (!(srbfib = aac_fib_alloc(dev))) { + return -ENOMEM; + } + + memset(sg_list, 0, sizeof(sg_list)); /* cleanup may take issue */ + if(copy_from_user(&fibsize, &user_srb->count,sizeof(u32))){ + dprintk((KERN_DEBUG"aacraid: Could not copy data size from user\n")); + rcode = -EFAULT; + goto cleanup; + } + + if ((fibsize < (sizeof(struct user_aac_srb) - sizeof(struct user_sgentry))) || + (fibsize > (dev->max_fib_size - sizeof(struct aac_fibhdr)))) { + rcode = -EINVAL; + goto cleanup; + } + + user_srbcmd = memdup_user(user_srb, fibsize); + if (IS_ERR(user_srbcmd)) { + rcode = PTR_ERR(user_srbcmd); + user_srbcmd = NULL; + goto cleanup; + } + + flags = user_srbcmd->flags; /* from user in cpu order */ + switch (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 (user_srbcmd->sg.count > ARRAY_SIZE(sg_list)) { + dprintk((KERN_DEBUG"aacraid: too many sg entries %d\n", + user_srbcmd->sg.count)); + rcode = -EINVAL; + goto cleanup; + } + if ((data_dir == DMA_NONE) && user_srbcmd->sg.count) { + dprintk((KERN_DEBUG"aacraid:SG with no direction specified\n")); + rcode = -EINVAL; + goto cleanup; + } + actual_fibsize = sizeof(struct aac_srb) - sizeof(struct sgentry) + + ((user_srbcmd->sg.count & 0xff) * sizeof(struct sgentry)); + actual_fibsize64 = actual_fibsize + (user_srbcmd->sg.count & 0xff) * + (sizeof(struct sgentry64) - sizeof(struct sgentry)); + /* User made a mistake - should not continue */ + if ((actual_fibsize != fibsize) && (actual_fibsize64 != fibsize)) { + dprintk((KERN_DEBUG"aacraid: Bad Size specified in " + "Raw SRB command calculated fibsize=%lu;%lu " + "user_srbcmd->sg.count=%d aac_srb=%lu sgentry=%lu;%lu " + "issued fibsize=%d\n", + actual_fibsize, actual_fibsize64, user_srbcmd->sg.count, + sizeof(struct aac_srb), sizeof(struct sgentry), + sizeof(struct sgentry64), fibsize)); + rcode = -EINVAL; + goto cleanup; + } + + chn = user_srbcmd->channel; + if (chn < AAC_MAX_BUSES && user_srbcmd->id < AAC_MAX_TARGETS && + dev->hba_map[chn][user_srbcmd->id].devtype == + AAC_DEVTYPE_NATIVE_RAW) { + is_native_device = 1; + hbacmd = (struct aac_hba_cmd_req *)srbfib->hw_fib_va; + memset(hbacmd, 0, 96); /* sizeof(*hbacmd) is not necessary */ + + /* iu_type is a parameter of aac_hba_send */ + switch (data_dir) { + case DMA_TO_DEVICE: + hbacmd->byte1 = 2; + break; + case DMA_FROM_DEVICE: + case DMA_BIDIRECTIONAL: + hbacmd->byte1 = 1; + break; + case DMA_NONE: + default: + break; + } + hbacmd->lun[1] = cpu_to_le32(user_srbcmd->lun); + hbacmd->it_nexus = dev->hba_map[chn][user_srbcmd->id].rmw_nexus; + + /* + * we fill in reply_qid later in aac_src_deliver_message + * we fill in iu_type, request_id later in aac_hba_send + * we fill in emb_data_desc_count, data_length later + * in sg list build + */ + + memcpy(hbacmd->cdb, user_srbcmd->cdb, sizeof(hbacmd->cdb)); + + address = (u64)srbfib->hw_error_pa; + hbacmd->error_ptr_hi = cpu_to_le32((u32)(address >> 32)); + hbacmd->error_ptr_lo = cpu_to_le32((u32)(address & 0xffffffff)); + hbacmd->error_length = cpu_to_le32(FW_ERROR_BUFFER_SIZE); + hbacmd->emb_data_desc_count = + cpu_to_le32(user_srbcmd->sg.count); + srbfib->hbacmd_size = 64 + + user_srbcmd->sg.count * sizeof(struct aac_hba_sgl); + + } else { + is_native_device = 0; + aac_fib_init(srbfib); + + /* raw_srb FIB is not FastResponseCapable */ + srbfib->hw_fib_va->header.XferState &= + ~cpu_to_le32(FastResponseCapable); + + srbcmd = (struct aac_srb *) fib_data(srbfib); + + // Fix up srb for endian and force some values + + srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi); // Force this + srbcmd->channel = cpu_to_le32(user_srbcmd->channel); + srbcmd->id = cpu_to_le32(user_srbcmd->id); + srbcmd->lun = cpu_to_le32(user_srbcmd->lun); + srbcmd->timeout = cpu_to_le32(user_srbcmd->timeout); + srbcmd->flags = cpu_to_le32(flags); + srbcmd->retry_limit = 0; // Obsolete parameter + srbcmd->cdb_size = cpu_to_le32(user_srbcmd->cdb_size); + memcpy(srbcmd->cdb, user_srbcmd->cdb, sizeof(srbcmd->cdb)); + } + + byte_count = 0; + if (is_native_device) { + struct user_sgmap *usg32 = &user_srbcmd->sg; + struct user_sgmap64 *usg64 = + (struct user_sgmap64 *)&user_srbcmd->sg; + + for (i = 0; i < usg32->count; i++) { + void *p; + u64 addr; + + sg_count[i] = (actual_fibsize64 == fibsize) ? + usg64->sg[i].count : usg32->sg[i].count; + if (sg_count[i] > + (dev->scsi_host_ptr->max_sectors << 9)) { + pr_err("aacraid: upsg->sg[%d].count=%u>%u\n", + i, sg_count[i], + dev->scsi_host_ptr->max_sectors << 9); + rcode = -EINVAL; + goto cleanup; + } + + p = kmalloc(sg_count[i], GFP_KERNEL); + if (!p) { + rcode = -ENOMEM; + goto cleanup; + } + + if (actual_fibsize64 == fibsize) { + addr = (u64)usg64->sg[i].addr[0]; + addr += ((u64)usg64->sg[i].addr[1]) << 32; + } else { + addr = (u64)usg32->sg[i].addr; + } + + sg_user[i] = (void __user *)(uintptr_t)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], + sg_count[i])) { + rcode = -EFAULT; + goto cleanup; + } + } + addr = dma_map_single(&dev->pdev->dev, p, sg_count[i], + data_dir); + hbacmd->sge[i].addr_hi = cpu_to_le32((u32)(addr>>32)); + hbacmd->sge[i].addr_lo = cpu_to_le32( + (u32)(addr & 0xffffffff)); + hbacmd->sge[i].len = cpu_to_le32(sg_count[i]); + hbacmd->sge[i].flags = 0; + byte_count += sg_count[i]; + } + + if (usg32->count > 0) /* embedded sglist */ + hbacmd->sge[usg32->count-1].flags = + cpu_to_le32(0x40000000); + hbacmd->data_length = cpu_to_le32(byte_count); + + status = aac_hba_send(HBA_IU_TYPE_SCSI_CMD_REQ, srbfib, + NULL, NULL); + + } else if (dev->adapter_info.options & AAC_OPT_SGMAP_HOST64) { + struct user_sgmap64* upsg = (struct user_sgmap64*)&user_srbcmd->sg; + struct sgmap64* psg = (struct sgmap64*)&srbcmd->sg; + + /* + * This should also catch if user used the 32 bit sgmap + */ + if (actual_fibsize64 == fibsize) { + actual_fibsize = actual_fibsize64; + for (i = 0; i < upsg->count; i++) { + u64 addr; + void* p; + + sg_count[i] = upsg->sg[i].count; + if (sg_count[i] > + ((dev->adapter_info.options & + AAC_OPT_NEW_COMM) ? + (dev->scsi_host_ptr->max_sectors << 9) : + 65536)) { + rcode = -EINVAL; + goto cleanup; + } + + p = kmalloc(sg_count[i], GFP_KERNEL); + if(!p) { + dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n", + sg_count[i], i, upsg->count)); + rcode = -ENOMEM; + goto cleanup; + } + addr = (u64)upsg->sg[i].addr[0]; + addr += ((u64)upsg->sg[i].addr[1]) << 32; + sg_user[i] = (void __user *)(uintptr_t)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], + sg_count[i])){ + dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n")); + rcode = -EFAULT; + goto cleanup; + } + } + addr = dma_map_single(&dev->pdev->dev, p, + sg_count[i], data_dir); + + psg->sg[i].addr[0] = cpu_to_le32(addr & 0xffffffff); + psg->sg[i].addr[1] = cpu_to_le32(addr>>32); + byte_count += sg_count[i]; + psg->sg[i].count = cpu_to_le32(sg_count[i]); + } + } else { + struct user_sgmap* usg; + usg = kmemdup(upsg, + actual_fibsize - sizeof(struct aac_srb) + + sizeof(struct sgmap), GFP_KERNEL); + if (!usg) { + dprintk((KERN_DEBUG"aacraid: Allocation error in Raw SRB command\n")); + rcode = -ENOMEM; + goto cleanup; + } + actual_fibsize = actual_fibsize64; + + for (i = 0; i < usg->count; i++) { + u64 addr; + void* p; + + sg_count[i] = usg->sg[i].count; + if (sg_count[i] > + ((dev->adapter_info.options & + AAC_OPT_NEW_COMM) ? + (dev->scsi_host_ptr->max_sectors << 9) : + 65536)) { + kfree(usg); + rcode = -EINVAL; + goto cleanup; + } + + p = kmalloc(sg_count[i], GFP_KERNEL); + if(!p) { + dprintk((KERN_DEBUG "aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n", + sg_count[i], i, usg->count)); + kfree(usg); + rcode = -ENOMEM; + goto cleanup; + } + sg_user[i] = (void __user *)(uintptr_t)usg->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], + sg_count[i])) { + kfree (usg); + dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n")); + rcode = -EFAULT; + goto cleanup; + } + } + addr = dma_map_single(&dev->pdev->dev, p, + sg_count[i], data_dir); + + psg->sg[i].addr[0] = cpu_to_le32(addr & 0xffffffff); + psg->sg[i].addr[1] = cpu_to_le32(addr>>32); + byte_count += sg_count[i]; + psg->sg[i].count = cpu_to_le32(sg_count[i]); + } + kfree (usg); + } + srbcmd->count = cpu_to_le32(byte_count); + if (user_srbcmd->sg.count) + psg->count = cpu_to_le32(sg_indx+1); + else + psg->count = 0; + status = aac_fib_send(ScsiPortCommand64, srbfib, actual_fibsize, FsaNormal, 1, 1,NULL,NULL); + } else { + struct user_sgmap* upsg = &user_srbcmd->sg; + struct sgmap* psg = &srbcmd->sg; + + if (actual_fibsize64 == fibsize) { + struct user_sgmap64* usg = (struct user_sgmap64 *)upsg; + for (i = 0; i < upsg->count; i++) { + uintptr_t addr; + void* p; + + sg_count[i] = usg->sg[i].count; + if (sg_count[i] > + ((dev->adapter_info.options & + AAC_OPT_NEW_COMM) ? + (dev->scsi_host_ptr->max_sectors << 9) : + 65536)) { + rcode = -EINVAL; + goto cleanup; + } + p = kmalloc(sg_count[i], GFP_KERNEL); + if (!p) { + dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n", + sg_count[i], i, usg->count)); + rcode = -ENOMEM; + goto cleanup; + } + addr = (u64)usg->sg[i].addr[0]; + addr += ((u64)usg->sg[i].addr[1]) << 32; + sg_user[i] = (void __user *)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], + sg_count[i])){ + dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n")); + rcode = -EFAULT; + goto cleanup; + } + } + addr = dma_map_single(&dev->pdev->dev, p, + usg->sg[i].count, + data_dir); + + psg->sg[i].addr = cpu_to_le32(addr & 0xffffffff); + byte_count += usg->sg[i].count; + psg->sg[i].count = cpu_to_le32(sg_count[i]); + } + } else { + for (i = 0; i < upsg->count; i++) { + dma_addr_t addr; + void* p; + + sg_count[i] = upsg->sg[i].count; + if (sg_count[i] > + ((dev->adapter_info.options & + AAC_OPT_NEW_COMM) ? + (dev->scsi_host_ptr->max_sectors << 9) : + 65536)) { + rcode = -EINVAL; + goto cleanup; + } + p = kmalloc(sg_count[i], GFP_KERNEL); + if (!p) { + dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n", + sg_count[i], i, upsg->count)); + rcode = -ENOMEM; + goto cleanup; + } + sg_user[i] = (void __user *)(uintptr_t)upsg->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], + sg_count[i])) { + dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n")); + rcode = -EFAULT; + goto cleanup; + } + } + addr = dma_map_single(&dev->pdev->dev, p, + sg_count[i], data_dir); + + psg->sg[i].addr = cpu_to_le32(addr); + byte_count += sg_count[i]; + psg->sg[i].count = cpu_to_le32(sg_count[i]); + } + } + srbcmd->count = cpu_to_le32(byte_count); + if (user_srbcmd->sg.count) + psg->count = cpu_to_le32(sg_indx+1); + else + psg->count = 0; + status = aac_fib_send(ScsiPortCommand, srbfib, actual_fibsize, FsaNormal, 1, 1, NULL, NULL); + } + + if (status == -ERESTARTSYS) { + rcode = -ERESTARTSYS; + goto cleanup; + } + + if (status != 0) { + dprintk((KERN_DEBUG"aacraid: Could not send raw srb fib to hba\n")); + rcode = -ENXIO; + goto cleanup; + } + + if (flags & SRB_DataIn) { + for(i = 0 ; i <= sg_indx; i++){ + if (copy_to_user(sg_user[i], sg_list[i], sg_count[i])) { + dprintk((KERN_DEBUG"aacraid: Could not copy sg data to user\n")); + rcode = -EFAULT; + goto cleanup; + + } + } + } + + user_reply = arg + fibsize; + if (is_native_device) { + struct aac_hba_resp *err = + &((struct aac_native_hba *)srbfib->hw_fib_va)->resp.err; + struct aac_srb_reply reply; + + memset(&reply, 0, sizeof(reply)); + reply.status = ST_OK; + if (srbfib->flags & FIB_CONTEXT_FLAG_FASTRESP) { + /* fast response */ + reply.srb_status = SRB_STATUS_SUCCESS; + reply.scsi_status = 0; + reply.data_xfer_length = byte_count; + reply.sense_data_size = 0; + memset(reply.sense_data, 0, AAC_SENSE_BUFFERSIZE); + } else { + reply.srb_status = err->service_response; + reply.scsi_status = err->status; + reply.data_xfer_length = byte_count - + le32_to_cpu(err->residual_count); + reply.sense_data_size = err->sense_response_data_len; + memcpy(reply.sense_data, err->sense_response_buf, + AAC_SENSE_BUFFERSIZE); + } + if (copy_to_user(user_reply, &reply, + sizeof(struct aac_srb_reply))) { + dprintk((KERN_DEBUG"aacraid: Copy to user failed\n")); + rcode = -EFAULT; + goto cleanup; + } + } else { + struct aac_srb_reply *reply; + + reply = (struct aac_srb_reply *) fib_data(srbfib); + if (copy_to_user(user_reply, reply, + sizeof(struct aac_srb_reply))) { + dprintk((KERN_DEBUG"aacraid: Copy to user failed\n")); + rcode = -EFAULT; + goto cleanup; + } + } + +cleanup: + kfree(user_srbcmd); + if (rcode != -ERESTARTSYS) { + for (i = 0; i <= sg_indx; i++) + kfree(sg_list[i]); + aac_fib_complete(srbfib); + aac_fib_free(srbfib); + } + + return rcode; +} + +struct aac_pci_info { + u32 bus; + u32 slot; +}; + + +static 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))) { + dprintk((KERN_DEBUG "aacraid: Could not copy pci info\n")); + return -EFAULT; + } + return 0; +} + +static int aac_get_hba_info(struct aac_dev *dev, void __user *arg) +{ + struct aac_hba_info hbainfo; + + memset(&hbainfo, 0, sizeof(hbainfo)); + hbainfo.adapter_number = (u8) dev->id; + hbainfo.system_io_bus_number = dev->pdev->bus->number; + hbainfo.device_number = (dev->pdev->devfn >> 3); + hbainfo.function_number = (dev->pdev->devfn & 0x0007); + + hbainfo.vendor_id = dev->pdev->vendor; + hbainfo.device_id = dev->pdev->device; + hbainfo.sub_vendor_id = dev->pdev->subsystem_vendor; + hbainfo.sub_system_id = dev->pdev->subsystem_device; + + if (copy_to_user(arg, &hbainfo, sizeof(struct aac_hba_info))) { + dprintk((KERN_DEBUG "aacraid: Could not copy hba info\n")); + return -EFAULT; + } + + return 0; +} + +struct aac_reset_iop { + u8 reset_type; +}; + +static int aac_send_reset_adapter(struct aac_dev *dev, void __user *arg) +{ + struct aac_reset_iop reset; + int retval; + + if (copy_from_user((void *)&reset, arg, sizeof(struct aac_reset_iop))) + return -EFAULT; + + dev->adapter_shutdown = 1; + + mutex_unlock(&dev->ioctl_mutex); + retval = aac_reset_adapter(dev, 0, reset.reset_type); + mutex_lock(&dev->ioctl_mutex); + + return retval; +} + +int aac_do_ioctl(struct aac_dev *dev, unsigned int cmd, void __user *arg) +{ + int status; + + mutex_lock(&dev->ioctl_mutex); + + if (dev->adapter_shutdown) { + status = -EACCES; + goto cleanup; + } + + /* + * HBA gets first crack + */ + + status = aac_dev_ioctl(dev, cmd, arg); + if (status != -ENOTTY) + goto cleanup; + + switch (cmd) { + case FSACTL_MINIPORT_REV_CHECK: + status = check_revision(dev, arg); + break; + case FSACTL_SEND_LARGE_FIB: + 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; + case FSACTL_GET_HBA_INFO: + status = aac_get_hba_info(dev, arg); + break; + case FSACTL_RESET_IOP: + status = aac_send_reset_adapter(dev, arg); + break; + + default: + status = -ENOTTY; + break; + } + +cleanup: + mutex_unlock(&dev->ioctl_mutex); + + return status; +} + |