From 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:44:59 +0000
Subject: [PATCH] gmac get mac form eeprom
---
kernel/arch/m68k/kernel/dma.c | 75 +++++++------------------------------
1 files changed, 15 insertions(+), 60 deletions(-)
diff --git a/kernel/arch/m68k/kernel/dma.c b/kernel/arch/m68k/kernel/dma.c
index e99993c..1c1b875 100644
--- a/kernel/arch/m68k/kernel/dma.c
+++ b/kernel/arch/m68k/kernel/dma.c
@@ -6,7 +6,7 @@
#undef DEBUG
-#include <linux/dma-noncoherent.h>
+#include <linux/dma-map-ops.h>
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
@@ -15,60 +15,24 @@
#include <linux/vmalloc.h>
#include <linux/export.h>
-#include <asm/pgalloc.h>
+#include <asm/cacheflush.h>
#if defined(CONFIG_MMU) && !defined(CONFIG_COLDFIRE)
-
-void *arch_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
- gfp_t flag, unsigned long attrs)
+void arch_dma_prep_coherent(struct page *page, size_t size)
{
- struct page *page, **map;
- pgprot_t pgprot;
- void *addr;
- int i, order;
+ cache_push(page_to_phys(page), size);
+}
- pr_debug("dma_alloc_coherent: %d,%x\n", size, flag);
-
- size = PAGE_ALIGN(size);
- order = get_order(size);
-
- page = alloc_pages(flag, order);
- if (!page)
- return NULL;
-
- *handle = page_to_phys(page);
- map = kmalloc(sizeof(struct page *) << order, flag & ~__GFP_DMA);
- if (!map) {
- __free_pages(page, order);
- return NULL;
+pgprot_t pgprot_dmacoherent(pgprot_t prot)
+{
+ if (CPU_IS_040_OR_060) {
+ pgprot_val(prot) &= ~_PAGE_CACHE040;
+ pgprot_val(prot) |= _PAGE_GLOBAL040 | _PAGE_NOCACHE_S;
+ } else {
+ pgprot_val(prot) |= _PAGE_NOCACHE030;
}
- split_page(page, order);
-
- order = 1 << order;
- size >>= PAGE_SHIFT;
- map[0] = page;
- for (i = 1; i < size; i++)
- map[i] = page + i;
- for (; i < order; i++)
- __free_page(page + i);
- pgprot = __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY);
- if (CPU_IS_040_OR_060)
- pgprot_val(pgprot) |= _PAGE_GLOBAL040 | _PAGE_NOCACHE_S;
- else
- pgprot_val(pgprot) |= _PAGE_NOCACHE030;
- addr = vmap(map, size, VM_MAP, pgprot);
- kfree(map);
-
- return addr;
+ return prot;
}
-
-void arch_dma_free(struct device *dev, size_t size, void *addr,
- dma_addr_t handle, unsigned long attrs)
-{
- pr_debug("dma_free_coherent: %p, %x\n", addr, handle);
- vfree(addr);
-}
-
#else
#include <asm/cacheflush.h>
@@ -97,8 +61,8 @@
#endif /* CONFIG_MMU && !CONFIG_COLDFIRE */
-void arch_sync_dma_for_device(struct device *dev, phys_addr_t handle,
- size_t size, enum dma_data_direction dir)
+void arch_sync_dma_for_device(phys_addr_t handle, size_t size,
+ enum dma_data_direction dir)
{
switch (dir) {
case DMA_BIDIRECTIONAL:
@@ -112,14 +76,5 @@
pr_err_ratelimited("dma_sync_single_for_device: unsupported dir %u\n",
dir);
break;
- }
-}
-
-void arch_setup_pdev_archdata(struct platform_device *pdev)
-{
- if (pdev->dev.coherent_dma_mask == DMA_MASK_NONE &&
- pdev->dev.dma_mask == NULL) {
- pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
- pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
}
}
--
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