Merge with mainline.

4 files changed, 27 insertions, 18 deletions

diff --git a/include/asm-alpha/dma.h b/include/asm-alpha/dma.h
index 97daf7d786aa..dc46ba5b4f1c 100644
--- a/include/asm-alpha/dma.h
+++ b/include/asm-alpha/dma.h
@@ -85,44 +85,47 @@
 /* The maximum address for ISA DMA transfer on Alpha XL, due to an
    hardware SIO limitation, is 64MB.
 */
-#define ALPHA_XL_MAX_DMA_ADDRESS	(IDENT_ADDR+0x04000000UL)
+#define ALPHA_XL_MAX_ISA_DMA_ADDRESS		0x04000000UL
 
-/* The maximum address for ISA DMA transfer on RUFFIAN and NAUTILUS,
+/* The maximum address for ISA DMA transfer on RUFFIAN,
    due to an hardware SIO limitation, is 16MB.
 */
-#define ALPHA_RUFFIAN_MAX_DMA_ADDRESS	(IDENT_ADDR+0x01000000UL)
-#define ALPHA_NAUTILUS_MAX_DMA_ADDRESS	(IDENT_ADDR+0x01000000UL)
+#define ALPHA_RUFFIAN_MAX_ISA_DMA_ADDRESS	0x01000000UL
 
 /* The maximum address for ISA DMA transfer on SABLE, and some ALCORs,
    due to an hardware SIO chip limitation, is 2GB.
 */
-#define ALPHA_SABLE_MAX_DMA_ADDRESS	(IDENT_ADDR+0x80000000UL)
-#define ALPHA_ALCOR_MAX_DMA_ADDRESS	(IDENT_ADDR+0x80000000UL)
+#define ALPHA_SABLE_MAX_ISA_DMA_ADDRESS		0x80000000UL
+#define ALPHA_ALCOR_MAX_ISA_DMA_ADDRESS		0x80000000UL
 
 /*
   Maximum address for all the others is the complete 32-bit bus
   address space.
 */
-#define ALPHA_MAX_DMA_ADDRESS		(IDENT_ADDR+0x100000000UL)
+#define ALPHA_MAX_ISA_DMA_ADDRESS		0x100000000UL
 
 #ifdef CONFIG_ALPHA_GENERIC
-# define MAX_DMA_ADDRESS		(alpha_mv.max_dma_address)
+# define MAX_ISA_DMA_ADDRESS		(alpha_mv.max_isa_dma_address)
 #else
 # if defined(CONFIG_ALPHA_XL)
-#  define MAX_DMA_ADDRESS		ALPHA_XL_MAX_DMA_ADDRESS
+#  define MAX_ISA_DMA_ADDRESS		ALPHA_XL_MAX_ISA_DMA_ADDRESS
 # elif defined(CONFIG_ALPHA_RUFFIAN)
-#  define MAX_DMA_ADDRESS		ALPHA_RUFFIAN_MAX_DMA_ADDRESS
-# elif defined(CONFIG_ALPHA_NAUTILUS)
-#  define MAX_DMA_ADDRESS		ALPHA_NAUTILUS_MAX_DMA_ADDRESS
+#  define MAX_ISA_DMA_ADDRESS		ALPHA_RUFFIAN_MAX_ISA_DMA_ADDRESS
 # elif defined(CONFIG_ALPHA_SABLE)
-#  define MAX_DMA_ADDRESS		ALPHA_SABLE_MAX_DMA_ADDRESS
+#  define MAX_ISA_DMA_ADDRESS		ALPHA_SABLE_MAX_DMA_ISA_ADDRESS
 # elif defined(CONFIG_ALPHA_ALCOR)
-#  define MAX_DMA_ADDRESS		ALPHA_ALCOR_MAX_DMA_ADDRESS
+#  define MAX_ISA_DMA_ADDRESS		ALPHA_ALCOR_MAX_DMA_ISA_ADDRESS
 # else
-#  define MAX_DMA_ADDRESS		ALPHA_MAX_DMA_ADDRESS
+#  define MAX_ISA_DMA_ADDRESS		ALPHA_MAX_ISA_DMA_ADDRESS
 # endif
 #endif
 
+/* If we have the iommu, we don't have any address limitations on DMA.
+   Otherwise (Nautilus, RX164), we have to have 0-16 Mb DMA zone
+   like i386. */
+#define MAX_DMA_ADDRESS		(alpha_mv.mv_pci_tbi ?	\
+				 ~0UL : IDENT_ADDR + 0x01000000)
+
 /* 8237 DMA controllers */
 #define IO_DMA1_BASE	0x00	/* 8 bit slave DMA, channels 0..3 */
 #define IO_DMA2_BASE	0xC0	/* 16 bit master DMA, ch 4(=slave input)..7 */
diff --git a/include/asm-alpha/floppy.h b/include/asm-alpha/floppy.h
index 88049a927ddd..db527586c23f 100644
--- a/include/asm-alpha/floppy.h
+++ b/include/asm-alpha/floppy.h
@@ -51,12 +51,12 @@ alpha_fd_dma_setup(char *addr, unsigned long size, int mode, int io)
 	if (bus_addr 
 	    && (addr != prev_addr || size != prev_size || dir != prev_dir)) {
 		/* different from last time -- unmap prev */
-		pci_unmap_single(NULL, bus_addr, prev_size, prev_dir);
+		pci_unmap_single(isa_bridge, bus_addr, prev_size, prev_dir);
 		bus_addr = 0;
 	}
 
 	if (!bus_addr)	/* need to map it */
-		bus_addr = pci_map_single(NULL, addr, size, dir);
+		bus_addr = pci_map_single(isa_bridge, addr, size, dir);
 
 	/* remember this one as prev */
 	prev_addr = addr;
diff --git a/include/asm-alpha/machvec.h b/include/asm-alpha/machvec.h
index ca6bbf25cb12..5becb8ef34eb 100644
--- a/include/asm-alpha/machvec.h
+++ b/include/asm-alpha/machvec.h
@@ -34,7 +34,7 @@ struct alpha_machine_vector
 	int nr_irqs;
 	int rtc_port;
 	int max_asn;
-	unsigned long max_dma_address;
+	unsigned long max_isa_dma_address;
 	unsigned long irq_probe_mask;
 	unsigned long iack_sc;
 	unsigned long min_io_address;
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 0d3d8f622b26..b49dd6f113a7 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -643,6 +643,10 @@ void pci_pool_destroy (struct pci_pool *pool);
 void *pci_pool_alloc (struct pci_pool *pool, int flags, dma_addr_t *handle);
 void pci_pool_free (struct pci_pool *pool, void *vaddr, dma_addr_t addr);
 
+#if defined(CONFIG_ISA) || defined(CONFIG_EISA)
+extern struct pci_dev *isa_bridge;
+#endif
+
 #endif /* CONFIG_PCI */
 
 /* Include architecture-dependent settings and functions */
@@ -703,6 +707,8 @@ static inline int pci_enable_wake(struct pci_dev *dev, u32 state, int enable) {
 #define pci_for_each_dev(dev) \
 	for(dev = NULL; 0; )
 
+#define	isa_bridge	((struct pci_dev *)NULL)
+
 #else
 
 /*