static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
{
int len = vma->vm_end - vma->vm_start;
u32 key = vma->vm_pgoff << PAGE_SHIFT;
struct c4iw_rdev *rdev;
int ret = 0;
struct c4iw_mm_entry *mm;
struct c4iw_ucontext *ucontext;
u64 addr, paddr;
u64 va_regs_res = 0, va_udbs_res = 0;
u64 len_regs_res = 0, len_udbs_res = 0;
CTR3(KTR_IW_CXGBE, "%s:1 ctx %p vma %p", __func__, context, vma);
CTR4(KTR_IW_CXGBE, "%s:1a pgoff 0x%lx key 0x%x len %d", __func__,
vma->vm_pgoff, key, len);
if (vma->vm_start & (PAGE_SIZE-1)) {
CTR3(KTR_IW_CXGBE, "%s:2 unaligned vm_start %u vma %p",
__func__, vma->vm_start, vma);
return -EINVAL;
}
rdev = &(to_c4iw_dev(context->device)->rdev);
ucontext = to_c4iw_ucontext(context);
mm = remove_mmap(ucontext, key, len);
if (!mm) {
CTR4(KTR_IW_CXGBE, "%s:3 ucontext %p key %u len %u", __func__,
ucontext, key, len);
return -EINVAL;
}
addr = mm->addr;
kfree(mm);
va_regs_res = (u64)rman_get_virtual(rdev->adap->regs_res);
len_regs_res = (u64)rman_get_size(rdev->adap->regs_res);
va_udbs_res = (u64)rman_get_virtual(rdev->adap->udbs_res);
len_udbs_res = (u64)rman_get_size(rdev->adap->udbs_res);
CTR6(KTR_IW_CXGBE,
"%s:4 addr %p, masync region %p:%p, udb region %p:%p", __func__,
addr, va_regs_res, va_regs_res+len_regs_res, va_udbs_res,
va_udbs_res+len_udbs_res);
if (addr >= va_regs_res && addr < va_regs_res + len_regs_res) {
CTR4(KTR_IW_CXGBE, "%s:5 MA_SYNC addr %p region %p, reglen %u",
__func__, addr, va_regs_res, len_regs_res);
/*
* MA_SYNC register...
*/
paddr = vtophys(addr);
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
ret = io_remap_pfn_range(vma, vma->vm_start,
paddr >> PAGE_SHIFT,
len, vma->vm_page_prot);
} else {
static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
{
int len = vma->vm_end - vma->vm_start;
u32 key = vma->vm_pgoff << PAGE_SHIFT;
struct cxio_rdev *rdev_p;
int ret = 0;
struct iwch_mm_entry *mm;
struct iwch_ucontext *ucontext;
u64 addr;
PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __FUNCTION__, vma->vm_pgoff,
key, len);
if (vma->vm_start & (PAGE_SIZE-1)) {
return -EINVAL;
}
rdev_p = &(to_iwch_dev(context->device)->rdev);
ucontext = to_iwch_ucontext(context);
mm = remove_mmap(ucontext, key, len);
if (!mm)
return -EINVAL;
addr = mm->addr;
kfree(mm);
if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
(addr < (rdev_p->rnic_info.udbell_physbase +
rdev_p->rnic_info.udbell_len))) {
/*
* Map T3 DB register.
*/
if (vma->vm_flags & VM_READ) {
return -EPERM;
}
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
vma->vm_flags &= ~VM_MAYREAD;
ret = io_remap_pfn_range(vma, vma->vm_start,
addr >> PAGE_SHIFT,
len, vma->vm_page_prot);
} else {
static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
{
int len = vma->vm_end - vma->vm_start;
u32 key = vma->vm_pgoff << PAGE_SHIFT;
struct c4iw_rdev *rdev;
int ret = 0;
struct c4iw_mm_entry *mm;
struct c4iw_ucontext *ucontext;
u64 addr;
pr_debug("pgoff 0x%lx key 0x%x len %d\n", vma->vm_pgoff,
key, len);
if (vma->vm_start & (PAGE_SIZE-1))
return -EINVAL;
rdev = &(to_c4iw_dev(context->device)->rdev);
ucontext = to_c4iw_ucontext(context);
mm = remove_mmap(ucontext, key, len);
if (!mm)
return -EINVAL;
addr = mm->addr;
kfree(mm);
if ((addr >= pci_resource_start(rdev->lldi.pdev, 0)) &&
(addr < (pci_resource_start(rdev->lldi.pdev, 0) +
pci_resource_len(rdev->lldi.pdev, 0)))) {
/*
* MA_SYNC register...
*/
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
ret = io_remap_pfn_range(vma, vma->vm_start,
addr >> PAGE_SHIFT,
len, vma->vm_page_prot);
} else if ((addr >= pci_resource_start(rdev->lldi.pdev, 2)) &&