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Diffstat (limited to 'arch/powerpc/platforms/cell/iommu.c')
-rw-r--r--arch/powerpc/platforms/cell/iommu.c66
1 files changed, 45 insertions, 21 deletions
diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c
index 26a067122a5..2b90ff8a93b 100644
--- a/arch/powerpc/platforms/cell/iommu.c
+++ b/arch/powerpc/platforms/cell/iommu.c
@@ -197,7 +197,7 @@ static int tce_build_cell(struct iommu_table *tbl, long index, long npages,
io_pte = (unsigned long *)tbl->it_base + (index - tbl->it_offset);
- for (i = 0; i < npages; i++, uaddr += IOMMU_PAGE_SIZE)
+ for (i = 0; i < npages; i++, uaddr += tbl->it_page_shift)
io_pte[i] = base_pte | (__pa(uaddr) & CBE_IOPTE_RPN_Mask);
mb();
@@ -412,8 +412,7 @@ static void cell_iommu_enable_hardware(struct cbe_iommu *iommu)
IIC_IRQ_IOEX_ATI | (iommu->nid << IIC_IRQ_NODE_SHIFT));
BUG_ON(virq == NO_IRQ);
- ret = request_irq(virq, ioc_interrupt, IRQF_DISABLED,
- iommu->name, iommu);
+ ret = request_irq(virq, ioc_interrupt, 0, iommu->name, iommu);
BUG_ON(ret);
/* set the IOC segment table origin register (and turn on the iommu) */
@@ -431,7 +430,7 @@ static void cell_iommu_setup_hardware(struct cbe_iommu *iommu,
{
cell_iommu_setup_stab(iommu, base, size, 0, 0);
iommu->ptab = cell_iommu_alloc_ptab(iommu, base, size, 0, 0,
- IOMMU_PAGE_SHIFT);
+ IOMMU_PAGE_SHIFT_4K);
cell_iommu_enable_hardware(iommu);
}
@@ -488,8 +487,10 @@ cell_iommu_setup_window(struct cbe_iommu *iommu, struct device_node *np,
window->table.it_blocksize = 16;
window->table.it_base = (unsigned long)iommu->ptab;
window->table.it_index = iommu->nid;
- window->table.it_offset = (offset >> IOMMU_PAGE_SHIFT) + pte_offset;
- window->table.it_size = size >> IOMMU_PAGE_SHIFT;
+ window->table.it_page_shift = IOMMU_PAGE_SHIFT_4K;
+ window->table.it_offset =
+ (offset >> window->table.it_page_shift) + pte_offset;
+ window->table.it_size = size >> window->table.it_page_shift;
iommu_init_table(&window->table, iommu->nid);
@@ -519,7 +520,6 @@ cell_iommu_setup_window(struct cbe_iommu *iommu, struct device_node *np,
__set_bit(0, window->table.it_map);
tce_build_cell(&window->table, window->table.it_offset, 1,
(unsigned long)iommu->pad_page, DMA_TO_DEVICE, NULL);
- window->table.it_hint = window->table.it_blocksize;
return window;
}
@@ -552,9 +552,8 @@ static struct iommu_table *cell_get_iommu_table(struct device *dev)
*/
iommu = cell_iommu_for_node(dev_to_node(dev));
if (iommu == NULL || list_empty(&iommu->windows)) {
- printk(KERN_ERR "iommu: missing iommu for %s (node %d)\n",
- dev->of_node ? dev->of_node->full_name : "?",
- dev_to_node(dev));
+ dev_err(dev, "iommu: missing iommu for %s (node %d)\n",
+ of_node_full_name(dev->of_node), dev_to_node(dev));
return NULL;
}
window = list_entry(iommu->windows.next, struct iommu_window, list);
@@ -565,7 +564,8 @@ static struct iommu_table *cell_get_iommu_table(struct device *dev)
/* A coherent allocation implies strong ordering */
static void *dma_fixed_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t flag)
+ dma_addr_t *dma_handle, gfp_t flag,
+ struct dma_attrs *attrs)
{
if (iommu_fixed_is_weak)
return iommu_alloc_coherent(dev, cell_get_iommu_table(dev),
@@ -573,18 +573,19 @@ static void *dma_fixed_alloc_coherent(struct device *dev, size_t size,
device_to_mask(dev), flag,
dev_to_node(dev));
else
- return dma_direct_ops.alloc_coherent(dev, size, dma_handle,
- flag);
+ return dma_direct_ops.alloc(dev, size, dma_handle, flag,
+ attrs);
}
static void dma_fixed_free_coherent(struct device *dev, size_t size,
- void *vaddr, dma_addr_t dma_handle)
+ void *vaddr, dma_addr_t dma_handle,
+ struct dma_attrs *attrs)
{
if (iommu_fixed_is_weak)
iommu_free_coherent(cell_get_iommu_table(dev), size, vaddr,
dma_handle);
else
- dma_direct_ops.free_coherent(dev, size, vaddr, dma_handle);
+ dma_direct_ops.free(dev, size, vaddr, dma_handle, attrs);
}
static dma_addr_t dma_fixed_map_page(struct device *dev, struct page *page,
@@ -643,8 +644,8 @@ static int dma_fixed_dma_supported(struct device *dev, u64 mask)
static int dma_set_mask_and_switch(struct device *dev, u64 dma_mask);
struct dma_map_ops dma_iommu_fixed_ops = {
- .alloc_coherent = dma_fixed_alloc_coherent,
- .free_coherent = dma_fixed_free_coherent,
+ .alloc = dma_fixed_alloc_coherent,
+ .free = dma_fixed_free_coherent,
.map_sg = dma_fixed_map_sg,
.unmap_sg = dma_fixed_unmap_sg,
.dma_supported = dma_fixed_dma_supported,
@@ -698,7 +699,7 @@ static int __init cell_iommu_get_window(struct device_node *np,
unsigned long *base,
unsigned long *size)
{
- const void *dma_window;
+ const __be32 *dma_window;
unsigned long index;
/* Use ibm,dma-window if available, else, hard code ! */
@@ -729,7 +730,7 @@ static struct cbe_iommu * __init cell_iommu_alloc(struct device_node *np)
nid, np->full_name);
/* XXX todo: If we can have multiple windows on the same IOMMU, which
- * isn't the case today, we probably want here to check wether the
+ * isn't the case today, we probably want here to check whether the
* iommu for that node is already setup.
* However, there might be issue with getting the size right so let's
* ignore that for now. We might want to completely get rid of the
@@ -774,7 +775,7 @@ static void __init cell_iommu_init_one(struct device_node *np,
/* Setup the iommu_table */
cell_iommu_setup_window(iommu, np, base, size,
- offset >> IOMMU_PAGE_SHIFT);
+ offset >> IOMMU_PAGE_SHIFT_4K);
}
static void __init cell_disable_iommus(void)
@@ -1038,6 +1039,8 @@ static int __init cell_iommu_fixed_mapping_init(void)
/* The fixed mapping is only supported on axon machines */
np = of_find_node_by_name(NULL, "axon");
+ of_node_put(np);
+
if (!np) {
pr_debug("iommu: fixed mapping disabled, no axons found\n");
return -1;
@@ -1121,7 +1124,7 @@ static int __init cell_iommu_fixed_mapping_init(void)
cell_iommu_setup_stab(iommu, dbase, dsize, fbase, fsize);
iommu->ptab = cell_iommu_alloc_ptab(iommu, dbase, dsize, 0, 0,
- IOMMU_PAGE_SHIFT);
+ IOMMU_PAGE_SHIFT_4K);
cell_iommu_setup_fixed_ptab(iommu, np, dbase, dsize,
fbase, fsize);
cell_iommu_enable_hardware(iommu);
@@ -1159,6 +1162,26 @@ static int __init setup_iommu_fixed(char *str)
}
__setup("iommu_fixed=", setup_iommu_fixed);
+static u64 cell_dma_get_required_mask(struct device *dev)
+{
+ struct dma_map_ops *dma_ops;
+
+ if (!dev->dma_mask)
+ return 0;
+
+ if (!iommu_fixed_disabled &&
+ cell_iommu_get_fixed_address(dev) != OF_BAD_ADDR)
+ return DMA_BIT_MASK(64);
+
+ dma_ops = get_dma_ops(dev);
+ if (dma_ops->get_required_mask)
+ return dma_ops->get_required_mask(dev);
+
+ WARN_ONCE(1, "no get_required_mask in %p ops", dma_ops);
+
+ return DMA_BIT_MASK(64);
+}
+
static int __init cell_iommu_init(void)
{
struct device_node *np;
@@ -1175,6 +1198,7 @@ static int __init cell_iommu_init(void)
/* Setup various ppc_md. callbacks */
ppc_md.pci_dma_dev_setup = cell_pci_dma_dev_setup;
+ ppc_md.dma_get_required_mask = cell_dma_get_required_mask;
ppc_md.tce_build = tce_build_cell;
ppc_md.tce_free = tce_free_cell;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 13:05:08 +0000