diff options
author | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2013-02-04 15:23:08 +0000 |
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committer | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2013-02-04 15:23:08 +0000 |
commit | df7b7e61854c0e0da9e75b4a678f0e3b196f79ea (patch) | |
tree | 98addc02f41d652e39ae1f7afa251108ab606416 /target/linux/leon/patches-2.6.36/015-dma_ops.patch | |
parent | b01f7e06a29068c94cb65fb40317daf54cb60ff0 (diff) |
leon: R.I.P.
It is broken since ~9 months and nobody takes care of that.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35488 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/leon/patches-2.6.36/015-dma_ops.patch')
-rw-r--r-- | target/linux/leon/patches-2.6.36/015-dma_ops.patch | 296 |
1 files changed, 0 insertions, 296 deletions
diff --git a/target/linux/leon/patches-2.6.36/015-dma_ops.patch b/target/linux/leon/patches-2.6.36/015-dma_ops.patch deleted file mode 100644 index 7f488e022..000000000 --- a/target/linux/leon/patches-2.6.36/015-dma_ops.patch +++ /dev/null @@ -1,296 +0,0 @@ -From c6d8f92cfd7f4f19eb3b16545b3b68c561978fe8 Mon Sep 17 00:00:00 2001 -From: Kristoffer Glembo <kristoffer@gaisler.com> -Date: Mon, 7 Jun 2010 14:00:30 +0200 -Subject: [PATCH] sparc32: Added LEON dma_ops. - -Added leon3_dma_ops and mmu_inval_dma_area. ---- - arch/sparc/kernel/ioport.c | 139 +++++++++++++++++++++++++++++++------------ - 1 files changed, 100 insertions(+), 39 deletions(-) - ---- a/arch/sparc/kernel/ioport.c -+++ b/arch/sparc/kernel/ioport.c -@@ -50,10 +50,15 @@ - #include <asm/io-unit.h> - #include <asm/leon.h> - --#ifdef CONFIG_SPARC_LEON --#define mmu_inval_dma_area(p, l) leon_flush_dcache_all() --#else -+#ifndef CONFIG_SPARC_LEON - #define mmu_inval_dma_area(p, l) /* Anton pulled it out for 2.4.0-xx */ -+#else -+static inline void mmu_inval_dma_area(unsigned long va, unsigned long len) -+{ -+ if (!sparc_leon3_snooping_enabled()) { -+ leon_flush_dcache_all(); -+ } -+} - #endif - - static struct resource *_sparc_find_resource(struct resource *r, -@@ -254,7 +259,7 @@ static void *sbus_alloc_coherent(struct - dma_addr_t *dma_addrp, gfp_t gfp) - { - struct platform_device *op = to_platform_device(dev); -- unsigned long len_total = (len + PAGE_SIZE-1) & PAGE_MASK; -+ unsigned long len_total = PAGE_ALIGN(len); - unsigned long va; - struct resource *res; - int order; -@@ -287,15 +292,19 @@ static void *sbus_alloc_coherent(struct - * XXX That's where sdev would be used. Currently we load - * all iommu tables with the same translations. - */ -- if (mmu_map_dma_area(dev, dma_addrp, va, res->start, len_total) != 0) -- goto err_noiommu; -- -- res->name = op->dev.of_node->name; -+#ifdef CONFIG_SPARC_LEON -+ sparc_mapiorange(0, virt_to_phys(va), res->start, len_total); -+ *dma_addrp = virt_to_phys(va); -+#else -+ if (mmu_map_dma_area(dev, dma_addrp, va, res->start, len_total) != 0) { -+ release_resource(res); -+ goto err_nova; -+ } -+#endif -+ res->name = op->node->name; - - return (void *)(unsigned long)res->start; - --err_noiommu: -- release_resource(res); - err_nova: - free_pages(va, order); - err_nomem: -@@ -321,7 +330,7 @@ static void sbus_free_coherent(struct de - return; - } - -- n = (n + PAGE_SIZE-1) & PAGE_MASK; -+ n = PAGE_ALIGN(n); - if ((res->end-res->start)+1 != n) { - printk("sbus_free_consistent: region 0x%lx asked 0x%zx\n", - (long)((res->end-res->start)+1), n); -@@ -333,7 +342,12 @@ static void sbus_free_coherent(struct de - - /* mmu_inval_dma_area(va, n); */ /* it's consistent, isn't it */ - pgv = virt_to_page(p); -- mmu_unmap_dma_area(dev, ba, n); -+ -+#ifdef CONFIG_SPARC_LEON -+ sparc_unmapiorange((unsigned long)p, n); -+#else -+ mmu_unmap_dma_area(dev, ba, n); -+#endif - - __free_pages(pgv, get_order(n)); - } -@@ -408,9 +422,6 @@ struct dma_map_ops sbus_dma_ops = { - .sync_sg_for_device = sbus_sync_sg_for_device, - }; - --struct dma_map_ops *dma_ops = &sbus_dma_ops; --EXPORT_SYMBOL(dma_ops); -- - static int __init sparc_register_ioport(void) - { - register_proc_sparc_ioport(); -@@ -422,7 +433,7 @@ arch_initcall(sparc_register_ioport); - - #endif /* CONFIG_SBUS */ - --#ifdef CONFIG_PCI -+#if defined(CONFIG_PCI) || defined(CONFIG_SPARC_LEON) - - /* Allocate and map kernel buffer using consistent mode DMA for a device. - * hwdev should be valid struct pci_dev pointer for PCI devices. -@@ -430,7 +441,7 @@ arch_initcall(sparc_register_ioport); - static void *pci32_alloc_coherent(struct device *dev, size_t len, - dma_addr_t *pba, gfp_t gfp) - { -- unsigned long len_total = (len + PAGE_SIZE-1) & PAGE_MASK; -+ unsigned long len_total = PAGE_ALIGN(len); - unsigned long va; - struct resource *res; - int order; -@@ -463,10 +474,6 @@ static void *pci32_alloc_coherent(struct - return NULL; - } - mmu_inval_dma_area(va, len_total); --#if 0 --/* P3 */ printk("pci_alloc_consistent: kva %lx uncva %lx phys %lx size %lx\n", -- (long)va, (long)res->start, (long)virt_to_phys(va), len_total); --#endif - sparc_mapiorange(0, virt_to_phys(va), res->start, len_total); - - *pba = virt_to_phys(va); /* equals virt_to_bus (R.I.P.) for us. */ -@@ -498,7 +505,7 @@ static void pci32_free_coherent(struct d - return; - } - -- n = (n + PAGE_SIZE-1) & PAGE_MASK; -+ n = PAGE_ALIGN(n); - if ((res->end-res->start)+1 != n) { - printk("pci_free_consistent: region 0x%lx asked 0x%lx\n", - (long)((res->end-res->start)+1), (long)n); -@@ -515,6 +522,14 @@ static void pci32_free_coherent(struct d - free_pages(pgp, get_order(n)); - } - -+static void pci32_unmap_page(struct device *dev, dma_addr_t ba, size_t size, -+ enum dma_data_direction dir, struct dma_attrs *attrs) -+{ -+ if (dir != PCI_DMA_TODEVICE) { -+ mmu_inval_dma_area((unsigned long)phys_to_virt(ba), PAGE_ALIGN(size)); -+ } -+} -+ - /* - * Same as pci_map_single, but with pages. - */ -@@ -551,8 +566,7 @@ static int pci32_map_sg(struct device *d - - /* IIep is write-through, not flushing. */ - for_each_sg(sgl, sg, nents, n) { -- BUG_ON(page_address(sg_page(sg)) == NULL); -- sg->dma_address = virt_to_phys(sg_virt(sg)); -+ sg->dma_address = sg_phys(sg); - sg->dma_length = sg->length; - } - return nents; -@@ -571,10 +585,7 @@ static void pci32_unmap_sg(struct device - - if (dir != PCI_DMA_TODEVICE) { - for_each_sg(sgl, sg, nents, n) { -- BUG_ON(page_address(sg_page(sg)) == NULL); -- mmu_inval_dma_area( -- (unsigned long) page_address(sg_page(sg)), -- (sg->length + PAGE_SIZE-1) & PAGE_MASK); -+ mmu_inval_dma_area((unsigned long)sg_virt(sg), PAGE_ALIGN(sg->length)); - } - } - } -@@ -594,7 +605,7 @@ static void pci32_sync_single_for_cpu(st - { - if (dir != PCI_DMA_TODEVICE) { - mmu_inval_dma_area((unsigned long)phys_to_virt(ba), -- (size + PAGE_SIZE-1) & PAGE_MASK); -+ PAGE_ALIGN(size)); - } - } - -@@ -621,10 +632,7 @@ static void pci32_sync_sg_for_cpu(struct - - if (dir != PCI_DMA_TODEVICE) { - for_each_sg(sgl, sg, nents, n) { -- BUG_ON(page_address(sg_page(sg)) == NULL); -- mmu_inval_dma_area( -- (unsigned long) page_address(sg_page(sg)), -- (sg->length + PAGE_SIZE-1) & PAGE_MASK); -+ mmu_inval_dma_area((unsigned long)sg_virt(sg), PAGE_ALIGN(sg->length)); - } - } - } -@@ -637,18 +645,38 @@ static void pci32_sync_sg_for_device(str - - if (dir != PCI_DMA_TODEVICE) { - for_each_sg(sgl, sg, nents, n) { -- BUG_ON(page_address(sg_page(sg)) == NULL); -- mmu_inval_dma_area( -- (unsigned long) page_address(sg_page(sg)), -- (sg->length + PAGE_SIZE-1) & PAGE_MASK); -+ mmu_inval_dma_area((unsigned long)sg_virt(sg), PAGE_ALIGN(sg->length)); - } - } - } - -+/* LEON3 unmapping functions -+ * -+ * We can only invalidate the whole cache so unmap_page and unmap_sg do the same thing -+ */ -+static void leon3_unmap_page(struct device *dev, dma_addr_t ba, size_t size, -+ enum dma_data_direction dir, struct dma_attrs *attrs) -+{ -+ if (dir != PCI_DMA_TODEVICE) { -+ mmu_inval_dma_area(0, 0); -+ } -+} -+ -+static void leon3_unmap_sg(struct device *dev, struct scatterlist *sgl, -+ int nents, enum dma_data_direction dir, -+ struct dma_attrs *attrs) -+{ -+ -+ if (dir != PCI_DMA_TODEVICE) { -+ mmu_inval_dma_area(0, 0); -+ } -+} -+ - struct dma_map_ops pci32_dma_ops = { - .alloc_coherent = pci32_alloc_coherent, - .free_coherent = pci32_free_coherent, - .map_page = pci32_map_page, -+ .unmap_page = pci32_unmap_page, - .map_sg = pci32_map_sg, - .unmap_sg = pci32_unmap_sg, - .sync_single_for_cpu = pci32_sync_single_for_cpu, -@@ -658,7 +686,30 @@ struct dma_map_ops pci32_dma_ops = { - }; - EXPORT_SYMBOL(pci32_dma_ops); - --#endif /* CONFIG_PCI */ -+struct dma_map_ops leon3_dma_ops = { -+ .alloc_coherent = sbus_alloc_coherent, -+ .free_coherent = sbus_free_coherent, -+ .map_page = pci32_map_page, -+ .unmap_page = leon3_unmap_page, -+ .map_sg = pci32_map_sg, -+ .unmap_sg = leon3_unmap_sg, -+ .sync_single_for_cpu = pci32_sync_single_for_cpu, -+ .sync_single_for_device = pci32_sync_single_for_device, -+ .sync_sg_for_cpu = pci32_sync_sg_for_cpu, -+ .sync_sg_for_device = pci32_sync_sg_for_device, -+}; -+ -+#endif /* CONFIG_PCI || CONFIG_SPARC_LEON */ -+ -+#ifdef CONFIG_SPARC_LEON -+struct dma_map_ops *dma_ops = &leon3_dma_ops; -+#else -+struct dma_map_ops *dma_ops = &sbus_dma_ops; -+#endif -+ -+#ifdef CONFIG_SBUS -+EXPORT_SYMBOL(dma_ops); -+#endif - - /* - * Return whether the given PCI device DMA address mask can be -@@ -676,6 +727,16 @@ int dma_supported(struct device *dev, u6 - } - EXPORT_SYMBOL(dma_supported); - -+int dma_set_mask(struct device *dev, u64 dma_mask) -+{ -+#ifdef CONFIG_PCI -+ if (dev->bus == &pci_bus_type) -+ return pci_set_dma_mask(to_pci_dev(dev), dma_mask); -+#endif -+ return -EOPNOTSUPP; -+} -+EXPORT_SYMBOL(dma_set_mask); -+ - #ifdef CONFIG_PROC_FS - - static int sparc_io_proc_show(struct seq_file *m, void *v) -@@ -717,7 +778,7 @@ static const struct file_operations spar - static struct resource *_sparc_find_resource(struct resource *root, - unsigned long hit) - { -- struct resource *tmp; -+ struct resource *tmp; - - for (tmp = root->child; tmp != 0; tmp = tmp->sibling) { - if (tmp->start <= hit && tmp->end >= hit) |