diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/devres.c | 25 | ||||
| -rw-r--r-- | lib/iommu-helper.c | 10 | ||||
| -rw-r--r-- | lib/kobject.c | 11 | ||||
| -rw-r--r-- | lib/swiotlb.c | 30 |
4 files changed, 52 insertions, 24 deletions
diff --git a/lib/devres.c b/lib/devres.c index b1d336c..edc27a5 100644 --- a/lib/devres.c +++ b/lib/devres.c @@ -298,6 +298,31 @@ int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name) EXPORT_SYMBOL(pcim_iomap_regions); /** + * pcim_iomap_regions_request_all - Request all BARs and iomap specified ones + * @pdev: PCI device to map IO resources for + * @mask: Mask of BARs to iomap + * @name: Name used when requesting regions + * + * Request all PCI BARs and iomap regions specified by @mask. + */ +int pcim_iomap_regions_request_all(struct pci_dev *pdev, u16 mask, + const char *name) +{ + int request_mask = ((1 << 6) - 1) & ~mask; + int rc; + + rc = pci_request_selected_regions(pdev, request_mask, name); + if (rc) + return rc; + + rc = pcim_iomap_regions(pdev, mask, name); + if (rc) + pci_release_selected_regions(pdev, request_mask); + return rc; +} +EXPORT_SYMBOL(pcim_iomap_regions_request_all); + +/** * pcim_iounmap_regions - Unmap and release PCI BARs * @pdev: PCI device to map IO resources for * @mask: Mask of BARs to unmap and release diff --git a/lib/iommu-helper.c b/lib/iommu-helper.c index 495575a..a3b8d4c 100644 --- a/lib/iommu-helper.c +++ b/lib/iommu-helper.c @@ -40,10 +40,12 @@ static inline void set_bit_area(unsigned long *map, unsigned long i, } } -static inline int is_span_boundary(unsigned int index, unsigned int nr, - unsigned long shift, - unsigned long boundary_size) +int iommu_is_span_boundary(unsigned int index, unsigned int nr, + unsigned long shift, + unsigned long boundary_size) { + BUG_ON(!is_power_of_2(boundary_size)); + shift = (shift + index) & (boundary_size - 1); return shift + nr > boundary_size; } @@ -57,7 +59,7 @@ unsigned long iommu_area_alloc(unsigned long *map, unsigned long size, again: index = find_next_zero_area(map, size, start, nr, align_mask); if (index != -1) { - if (is_span_boundary(index, nr, shift, boundary_size)) { + if (iommu_is_span_boundary(index, nr, shift, boundary_size)) { /* we could do more effectively */ start = index + 1; goto again; diff --git a/lib/kobject.c b/lib/kobject.c index d784dae..0d03252 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -153,6 +153,10 @@ static void kobject_init_internal(struct kobject *kobj) return; kref_init(&kobj->kref); INIT_LIST_HEAD(&kobj->entry); + kobj->state_in_sysfs = 0; + kobj->state_add_uevent_sent = 0; + kobj->state_remove_uevent_sent = 0; + kobj->state_initialized = 1; } @@ -289,13 +293,8 @@ void kobject_init(struct kobject *kobj, struct kobj_type *ktype) dump_stack(); } - kref_init(&kobj->kref); - INIT_LIST_HEAD(&kobj->entry); + kobject_init_internal(kobj); kobj->ktype = ktype; - kobj->state_in_sysfs = 0; - kobj->state_add_uevent_sent = 0; - kobj->state_remove_uevent_sent = 0; - kobj->state_initialized = 1; return; error: diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 4bb5a11..0259228 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -310,7 +310,9 @@ map_single(struct device *hwdev, char *buffer, size_t size, int dir) start_dma_addr = virt_to_bus(io_tlb_start) & mask; offset_slots = ALIGN(start_dma_addr, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT; - max_slots = ALIGN(mask + 1, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT; + max_slots = mask + 1 + ? ALIGN(mask + 1, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT + : 1UL << (BITS_PER_LONG - IO_TLB_SHIFT); /* * For mappings greater than a page, we limit the stride (and @@ -333,16 +335,18 @@ map_single(struct device *hwdev, char *buffer, size_t size, int dir) index = ALIGN(io_tlb_index, stride); if (index >= io_tlb_nslabs) index = 0; - - while (is_span_boundary(index, nslots, offset_slots, - max_slots)) { - index += stride; - if (index >= io_tlb_nslabs) - index = 0; - } wrap = index; do { + while (is_span_boundary(index, nslots, offset_slots, + max_slots)) { + index += stride; + if (index >= io_tlb_nslabs) + index = 0; + if (index == wrap) + goto not_found; + } + /* * If we find a slot that indicates we have 'nslots' * number of contiguous buffers, we allocate the @@ -367,14 +371,12 @@ map_single(struct device *hwdev, char *buffer, size_t size, int dir) goto found; } - do { - index += stride; - if (index >= io_tlb_nslabs) - index = 0; - } while (is_span_boundary(index, nslots, offset_slots, - max_slots)); + index += stride; + if (index >= io_tlb_nslabs) + index = 0; } while (index != wrap); + not_found: spin_unlock_irqrestore(&io_tlb_lock, flags); return NULL; } |
