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Commit b340c708 authored by Ivan Kokshaysky's avatar Ivan Kokshaysky Committed by Linus Torvalds
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[PATCH] alpha: misc fixes 

Patch set from Jay Estabrook:

 - include/asm-alpha/dma.h:
	Add MAX_DMA_ADDR for SABLE and ALCOR

 - include/asm-alpha/floppy.h:
	enable the full CROSS_64KB macro for all platforms

 - include/asm-alpha/core_t2.h:
	fix HAE usage

 - arch/alpha/kernel/pci.c:
	fiddle with quirk_cypress

 - arch/alpha/kernel/traps.c:
	prevent opDEC_check() from multiple calls (EV4 SMP SABLEs)

 - arch/alpha/kernel/proto.h:
	make t2_pci_tbi() real

 - arch/alpha/kernel/time.c:
	shorten timeout delay

 - arch/alpha/kernel/sys_alcor.c:
	use ALCOR_MAX_DMA_ADDR because of the 1GB limit on ISA devices

 - arch/alpha/kernel/core_t2.c:
	add S/G support and allow direct-map to handle 2GB of memory

 - arch/alpha/kernel/core_tsunami.c:
	rework alignment requirements for ISA DMA, esp. for ACER platforms

 - arch/alpha/kernel/sys_sable.c:
	fix MAX_DMA_ADDR for the 1GB limitation

 - arch/alpha/kernel/pci_impl.h:
	add T2_DEFAULT_MEM_BASE to help avoid HAE use

 - arch/alpha/kernel/pci_iommu.c:
	fix ISA_DMA_MASK calculation, and force ISA alignment to 64KB
parent 7d1d6131
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Showing with 197 additions and 122 deletions
arch/alpha/kernel/core_t2.c
View file @ b340c708
...@@ -26,6 +26,18 @@ ...@@ -26,6 +26,18 @@
#include "proto.h" #include "proto.h"
#include "pci_impl.h" #include "pci_impl.h"
/*
* By default, we direct-map starting at 2GB, in order to allow the
* maximum size direct-map window (2GB) to match the maximum amount of
* memory (2GB) that can be present on SABLEs. But that limits the
* floppy to DMA only via the scatter/gather window set up for 8MB
* ISA DMA, since the maximum ISA DMA address is 2GB-1.
*
* For now, this seems a reasonable trade-off: even though most SABLEs
* have far less than even 1GB of memory, floppy usage/performance will
* not really be affected by forcing it to go via scatter/gather...
*/
#define T2_DIRECTMAP_2G 1
/* /*
* NOTE: Herein lie back-to-back mb instructions. They are magic. * NOTE: Herein lie back-to-back mb instructions. They are magic.
...@@ -282,6 +294,7 @@ void __init ...@@ -282,6 +294,7 @@ void __init
t2_init_arch(void) t2_init_arch(void)
{ {
struct pci_controller *hose; struct pci_controller *hose;
unsigned long t2_iocsr;
unsigned int i; unsigned int i;
for (i = 0; i < NR_CPUS; i++) { for (i = 0; i < NR_CPUS; i++) {
...@@ -290,43 +303,80 @@ t2_init_arch(void) ...@@ -290,43 +303,80 @@ t2_init_arch(void)
} }
#if 0 #if 0
{ /* Set up error reporting. */
/* Set up error reporting. */ t2_iocsr = *(vulp)T2_IOCSR;
unsigned long t2_err; *(vulp)T2_IOCSR = t2_iocsr | (0x1UL << 7); /* TLB error check */
mb();
*(vulp)T2_IOCSR; /* read it back to make sure */
#endif
t2_err = *(vulp)T2_IOCSR; /* Enable scatter/gather TLB use. */
t2_err |= (0x1 << 7); /* master abort */ t2_iocsr = *(vulp)T2_IOCSR;
*(vulp)T2_IOCSR = t2_err; if (!(t2_iocsr & (0x1UL << 26))) {
mb(); printk("t2_init_arch: enabling SG TLB, IOCSR was 0x%lx\n",
t2_iocsr);
*(vulp)T2_IOCSR = t2_iocsr | (0x1UL << 26);
mb();
*(vulp)T2_IOCSR; /* read it back to make sure */
} }
#endif
printk("t2_init: HBASE was 0x%lx\n", *(vulp)T2_HBASE);
#if 0 #if 0
printk("t2_init: WBASE1=0x%lx WMASK1=0x%lx TBASE1=0x%lx\n", printk("t2_init_arch: HBASE was 0x%lx\n", *(vulp)T2_HBASE);
*(vulp)T2_WBASE1, printk("t2_init_arch: WBASE1=0x%lx WMASK1=0x%lx TBASE1=0x%lx\n",
*(vulp)T2_WMASK1, *(vulp)T2_WBASE1, *(vulp)T2_WMASK1, *(vulp)T2_TBASE1);
*(vulp)T2_TBASE1); printk("t2_init_arch: WBASE2=0x%lx WMASK2=0x%lx TBASE2=0x%lx\n",
printk("t2_init: WBASE2=0x%lx WMASK2=0x%lx TBASE2=0x%lx\n", *(vulp)T2_WBASE2, *(vulp)T2_WMASK2, *(vulp)T2_TBASE2);
*(vulp)T2_WBASE2,
*(vulp)T2_WMASK2,
*(vulp)T2_TBASE2);
#endif #endif
/*
* Create our single hose.
*/
pci_isa_hose = hose = alloc_pci_controller();
hose->io_space = &ioport_resource;
hose->mem_space = &iomem_resource;
hose->index = 0;
hose->sparse_mem_base = T2_SPARSE_MEM - IDENT_ADDR;
hose->dense_mem_base = T2_DENSE_MEM - IDENT_ADDR;
hose->sparse_io_base = T2_IO - IDENT_ADDR;
hose->dense_io_base = 0;
/* Note we can only do 1 SG window, as the other is for direct, so
do an ISA SG area, especially for the floppy. */
hose->sg_isa = iommu_arena_new(hose, 0x00800000, 0x00800000, 0);
hose->sg_pci = NULL;
/* /*
* Set up the PCI->physical memory translation windows. * Set up the PCI->physical memory translation windows.
* For now, window 2 is disabled. In the future, we may
* want to use it to do scatter/gather DMA.
* *
* Window 1 goes at 1 GB and is 1 GB large. * Window 1 goes at ? GB and is ?GB large, direct mapped.
* Window 2 goes at 8 MB and is 8MB large, scatter/gather (for ISA).
*/ */
/* WARNING!! must correspond to the DMA_WIN params!!! */ #if T2_DIRECTMAP_2G
__direct_map_base = 0x80000000UL;
__direct_map_size = 0x80000000UL;
/* WARNING!! must correspond to the direct map window params!!! */
*(vulp)T2_WBASE1 = 0x80080fffU;
*(vulp)T2_WMASK1 = 0x7ff00000U;
*(vulp)T2_TBASE1 = 0;
#else /* T2_DIRECTMAP_2G */
__direct_map_base = 0x40000000UL;
__direct_map_size = 0x40000000UL;
/* WARNING!! must correspond to the direct map window params!!! */
*(vulp)T2_WBASE1 = 0x400807ffU; *(vulp)T2_WBASE1 = 0x400807ffU;
*(vulp)T2_WMASK1 = 0x3ff00000U; *(vulp)T2_WMASK1 = 0x3ff00000U;
*(vulp)T2_TBASE1 = 0; *(vulp)T2_TBASE1 = 0;
#endif /* T2_DIRECTMAP_2G */
/* WARNING!! must correspond to the SG arena/window params!!! */
*(vulp)T2_WBASE2 = 0x008c000fU;
*(vulp)T2_WMASK2 = 0x00700000U;
*(vulp)T2_TBASE2 = virt_to_phys(hose->sg_isa->ptes) >> 1;
*(vulp)T2_WBASE2 = 0x0;
*(vulp)T2_HBASE = 0x0; *(vulp)T2_HBASE = 0x0;
/* Zero HAE. */ /* Zero HAE. */
...@@ -334,26 +384,28 @@ t2_init_arch(void) ...@@ -334,26 +384,28 @@ t2_init_arch(void)
*(vulp)T2_HAE_2 = 0; mb(); *(vulp)T2_HAE_2 = 0; mb();
*(vulp)T2_HAE_3 = 0; mb(); *(vulp)T2_HAE_3 = 0; mb();
#if 0 #if 0
*(vulp)T2_HAE_4 = 0; mb(); /* do not touch this */ *(vulp)T2_HAE_4 = 0; mb(); /* DO NOT TOUCH THIS!!! */
#endif #endif
/* t2_pci_tbi(hose, 0, -1); /* flush TLB all */
* Create our single hose. }
*/
pci_isa_hose = hose = alloc_pci_controller(); void
hose->io_space = &ioport_resource; t2_pci_tbi(struct pci_controller *hose, dma_addr_t start, dma_addr_t end)
hose->mem_space = &iomem_resource; {
hose->index = 0; unsigned long t2_iocsr;
hose->sparse_mem_base = T2_SPARSE_MEM - IDENT_ADDR; t2_iocsr = *(vulp)T2_IOCSR;
hose->dense_mem_base = T2_DENSE_MEM - IDENT_ADDR;
hose->sparse_io_base = T2_IO - IDENT_ADDR;
hose->dense_io_base = 0;
hose->sg_isa = hose->sg_pci = NULL; /* set the TLB Clear bit */
__direct_map_base = 0x40000000; *(vulp)T2_IOCSR = t2_iocsr | (0x1UL << 28);
__direct_map_size = 0x40000000; mb();
*(vulp)T2_IOCSR; /* read it back to make sure */
/* clear the TLB Clear bit */
*(vulp)T2_IOCSR = t2_iocsr & ~(0x1UL << 28);
mb();
*(vulp)T2_IOCSR; /* read it back to make sure */
} }
#define SIC_SEIC (1UL << 33) /* System Event Clear */ #define SIC_SEIC (1UL << 33) /* System Event Clear */
......
arch/alpha/kernel/core_tsunami.c
View file @ b340c708
...@@ -317,10 +317,17 @@ tsunami_init_one_pchip(tsunami_pchip *pchip, int index) ...@@ -317,10 +317,17 @@ tsunami_init_one_pchip(tsunami_pchip *pchip, int index)
* Window 0 is scatter-gather 8MB at 8MB (for isa) * Window 0 is scatter-gather 8MB at 8MB (for isa)
* Window 1 is scatter-gather (up to) 1GB at 1GB * Window 1 is scatter-gather (up to) 1GB at 1GB
* Window 2 is direct access 2GB at 2GB * Window 2 is direct access 2GB at 2GB
*
* NOTE: we need the align_entry settings for Acer devices on ES40,
* specifically floppy and IDE when memory is larger than 2GB.
*/ */
hose->sg_isa = iommu_arena_new(hose, 0x00800000, 0x00800000, 0); hose->sg_isa = iommu_arena_new(hose, 0x00800000, 0x00800000, 0);
/* Initially set for 4 PTEs, but will be overridden to 64K for ISA. */
hose->sg_isa->align_entry = 4;
hose->sg_pci = iommu_arena_new(hose, 0x40000000, hose->sg_pci = iommu_arena_new(hose, 0x40000000,
size_for_memory(0x40000000), 0); size_for_memory(0x40000000), 0);
hose->sg_pci->align_entry = 4; /* Tsunami caches 4 PTEs at a time */
__direct_map_base = 0x80000000; __direct_map_base = 0x80000000;
__direct_map_size = 0x80000000; __direct_map_size = 0x80000000;
......
arch/alpha/kernel/pci.c
View file @ b340c708
...@@ -97,15 +97,22 @@ quirk_cypress(struct pci_dev *dev) ...@@ -97,15 +97,22 @@ quirk_cypress(struct pci_dev *dev)
way to turn this off. The bridge also supports several extended way to turn this off. The bridge also supports several extended
BIOS ranges (disabled after power-up), and some consoles do turn BIOS ranges (disabled after power-up), and some consoles do turn
them on. So if we use a large direct-map window, or a large SG them on. So if we use a large direct-map window, or a large SG
window, we must avoid entire 0xfff00000-0xffffffff region. */ window, we must avoid the entire 0xfff00000-0xffffffff region. */
else if (dev->class >> 8 == PCI_CLASS_BRIDGE_ISA) { else if (dev->class >> 8 == PCI_CLASS_BRIDGE_ISA) {
if (__direct_map_base + __direct_map_size >= 0xfff00000) #define DMAPSZ (max_low_pfn << PAGE_SHIFT) /* memory size, not window size */
__direct_map_size = 0xfff00000 - __direct_map_base; if ((__direct_map_base + DMAPSZ - 1) >= 0xfff00000UL) {
else { __direct_map_size = 0xfff00000UL - __direct_map_base;
printk("%s: adjusting direct map size to 0x%x\n",
__FUNCTION__, __direct_map_size);
} else {
struct pci_controller *hose = dev->sysdata; struct pci_controller *hose = dev->sysdata;
struct pci_iommu_arena *pci = hose->sg_pci; struct pci_iommu_arena *pci = hose->sg_pci;
if (pci && pci->dma_base + pci->size >= 0xfff00000) if (pci &&
pci->size = 0xfff00000 - pci->dma_base; (pci->dma_base + pci->size - 1) >= 0xfff00000UL) {
pci->size = 0xfff00000UL - pci->dma_base;
printk("%s: adjusting PCI S/G size to 0x%x\n",
__FUNCTION__, pci->size);
}
} }
} }
} }
......
arch/alpha/kernel/pci_impl.h
View file @ b340c708
...@@ -52,15 +52,16 @@ struct pci_iommu_arena; ...@@ -52,15 +52,16 @@ struct pci_iommu_arena;
#define APECS_AND_LCA_DEFAULT_MEM_BASE ((16+2)*1024*1024) #define APECS_AND_LCA_DEFAULT_MEM_BASE ((16+2)*1024*1024)
/* /*
* Because the MCPCIA core logic supports more bits for physical addresses, * Because MCPCIA and T2 core logic support more bits for
* it should allow an expanded range of SPARSE memory addresses. * physical addresses, they should allow an expanded range of SPARSE
* However, we do not use them all, in order to avoid the HAE manipulation * memory addresses. However, we do not use them all, in order to
* that would be needed. * avoid the HAE manipulation that would be needed.
*/ */
#define MCPCIA_DEFAULT_MEM_BASE ((32+2)*1024*1024) #define MCPCIA_DEFAULT_MEM_BASE ((32+2)*1024*1024)
#define T2_DEFAULT_MEM_BASE ((16+1)*1024*1024)
/* /*
* Because CIA and PYXIS and T2 have more bits for physical addresses, * Because CIA and PYXIS have more bits for physical addresses,
* they support an expanded range of SPARSE memory addresses. * they support an expanded range of SPARSE memory addresses.
*/ */
#define DEFAULT_MEM_BASE ((128+16)*1024*1024) #define DEFAULT_MEM_BASE ((128+16)*1024*1024)
...@@ -157,8 +158,6 @@ extern struct resource *alloc_resource(void); ...@@ -157,8 +158,6 @@ extern struct resource *alloc_resource(void);
extern struct pci_iommu_arena *iommu_arena_new(struct pci_controller *, extern struct pci_iommu_arena *iommu_arena_new(struct pci_controller *,
dma_addr_t, unsigned long, dma_addr_t, unsigned long,
unsigned long); unsigned long);
extern long iommu_arena_alloc(struct pci_iommu_arena *arena, long n);
extern const char *const pci_io_names[]; extern const char *const pci_io_names[];
extern const char *const pci_mem_names[]; extern const char *const pci_mem_names[];
extern const char pci_hae0_name[]; extern const char pci_hae0_name[];
......
arch/alpha/kernel/pci_iommu.c
View file @ b340c708
...@@ -30,6 +30,9 @@ ...@@ -30,6 +30,9 @@
#define DEBUG_NODIRECT 0 #define DEBUG_NODIRECT 0
#define DEBUG_FORCEDAC 0 #define DEBUG_FORCEDAC 0
/* Most Alphas support 32-bit ISA DMA. Exceptions are XL, Ruffian,
Nautilus, Sable, and Alcor (see asm-alpha/dma.h for details). */
#define ISA_DMA_MASK (MAX_DMA_ADDRESS - IDENT_ADDR - 1)
static inline unsigned long static inline unsigned long
mk_iommu_pte(unsigned long paddr) mk_iommu_pte(unsigned long paddr)
...@@ -129,8 +132,8 @@ iommu_arena_find_pages(struct pci_iommu_arena *arena, long n, long mask) ...@@ -129,8 +132,8 @@ iommu_arena_find_pages(struct pci_iommu_arena *arena, long n, long mask)
return p; return p;
} }
long static long
iommu_arena_alloc(struct pci_iommu_arena *arena, long n) iommu_arena_alloc(struct pci_iommu_arena *arena, long n, unsigned int align)
{ {
unsigned long flags; unsigned long flags;
unsigned long *ptes; unsigned long *ptes;
...@@ -140,7 +143,7 @@ iommu_arena_alloc(struct pci_iommu_arena *arena, long n) ...@@ -140,7 +143,7 @@ iommu_arena_alloc(struct pci_iommu_arena *arena, long n)
/* Search for N empty ptes */ /* Search for N empty ptes */
ptes = arena->ptes; ptes = arena->ptes;
mask = arena->align_entry - 1; mask = max(align, arena->align_entry) - 1;
p = iommu_arena_find_pages(arena, n, mask); p = iommu_arena_find_pages(arena, n, mask);
if (p < 0) { if (p < 0) {
spin_unlock_irqrestore(&arena->lock, flags); spin_unlock_irqrestore(&arena->lock, flags);
...@@ -181,7 +184,7 @@ pci_map_single_1(struct pci_dev *pdev, void *cpu_addr, size_t size, ...@@ -181,7 +184,7 @@ pci_map_single_1(struct pci_dev *pdev, void *cpu_addr, size_t size,
int dac_allowed) int dac_allowed)
{ {
struct pci_controller *hose = pdev ? pdev->sysdata : pci_isa_hose; struct pci_controller *hose = pdev ? pdev->sysdata : pci_isa_hose;
dma_addr_t max_dma = pdev ? pdev->dma_mask : 0x00ffffff; dma_addr_t max_dma = pdev ? pdev->dma_mask : ISA_DMA_MASK;
struct pci_iommu_arena *arena; struct pci_iommu_arena *arena;
long npages, dma_ofs, i; long npages, dma_ofs, i;
unsigned long paddr; unsigned long paddr;
...@@ -232,7 +235,8 @@ pci_map_single_1(struct pci_dev *pdev, void *cpu_addr, size_t size, ...@@ -232,7 +235,8 @@ pci_map_single_1(struct pci_dev *pdev, void *cpu_addr, size_t size,
arena = hose->sg_isa; arena = hose->sg_isa;
npages = calc_npages((paddr & ~PAGE_MASK) + size); npages = calc_npages((paddr & ~PAGE_MASK) + size);
dma_ofs = iommu_arena_alloc(arena, npages); /* Force allocation to 64KB boundary for all ISA devices. */
dma_ofs = iommu_arena_alloc(arena, npages, pdev ? 8 : 0);
if (dma_ofs < 0) { if (dma_ofs < 0) {
printk(KERN_WARNING "pci_map_single failed: " printk(KERN_WARNING "pci_map_single failed: "
"could not allocate dma page tables\n"); "could not allocate dma page tables\n");
...@@ -499,7 +503,7 @@ sg_fill(struct scatterlist *leader, struct scatterlist *end, ...@@ -499,7 +503,7 @@ sg_fill(struct scatterlist *leader, struct scatterlist *end,
paddr &= ~PAGE_MASK; paddr &= ~PAGE_MASK;
npages = calc_npages(paddr + size); npages = calc_npages(paddr + size);
dma_ofs = iommu_arena_alloc(arena, npages); dma_ofs = iommu_arena_alloc(arena, npages, 0);
if (dma_ofs < 0) { if (dma_ofs < 0) {
/* If we attempted a direct map above but failed, die. */ /* If we attempted a direct map above but failed, die. */
if (leader->dma_address == 0) if (leader->dma_address == 0)
...@@ -588,7 +592,7 @@ pci_map_sg(struct pci_dev *pdev, struct scatterlist *sg, int nents, ...@@ -588,7 +592,7 @@ pci_map_sg(struct pci_dev *pdev, struct scatterlist *sg, int nents,
/* Second, figure out where we're going to map things. */ /* Second, figure out where we're going to map things. */
if (alpha_mv.mv_pci_tbi) { if (alpha_mv.mv_pci_tbi) {
hose = pdev ? pdev->sysdata : pci_isa_hose; hose = pdev ? pdev->sysdata : pci_isa_hose;
max_dma = pdev ? pdev->dma_mask : 0x00ffffff; max_dma = pdev ? pdev->dma_mask : ISA_DMA_MASK;
arena = hose->sg_pci; arena = hose->sg_pci;
if (!arena || arena->dma_base + arena->size - 1 > max_dma) if (!arena || arena->dma_base + arena->size - 1 > max_dma)
arena = hose->sg_isa; arena = hose->sg_isa;
...@@ -651,7 +655,7 @@ pci_unmap_sg(struct pci_dev *pdev, struct scatterlist *sg, int nents, ...@@ -651,7 +655,7 @@ pci_unmap_sg(struct pci_dev *pdev, struct scatterlist *sg, int nents,
return; return;
hose = pdev ? pdev->sysdata : pci_isa_hose; hose = pdev ? pdev->sysdata : pci_isa_hose;
max_dma = pdev ? pdev->dma_mask : 0x00ffffff; max_dma = pdev ? pdev->dma_mask : ISA_DMA_MASK;
arena = hose->sg_pci; arena = hose->sg_pci;
if (!arena || arena->dma_base + arena->size - 1 > max_dma) if (!arena || arena->dma_base + arena->size - 1 > max_dma)
arena = hose->sg_isa; arena = hose->sg_isa;
......
arch/alpha/kernel/proto.h
View file @ b340c708
...@@ -59,7 +59,7 @@ extern void polaris_machine_check(u64, u64, struct pt_regs *); ...@@ -59,7 +59,7 @@ extern void polaris_machine_check(u64, u64, struct pt_regs *);
extern struct pci_ops t2_pci_ops; extern struct pci_ops t2_pci_ops;
extern void t2_init_arch(void); extern void t2_init_arch(void);
extern void t2_machine_check(u64, u64, struct pt_regs *); extern void t2_machine_check(u64, u64, struct pt_regs *);
#define t2_pci_tbi ((void *)0) extern void t2_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
/* core_titan.c */ /* core_titan.c */
extern struct pci_ops titan_pci_ops; extern struct pci_ops titan_pci_ops;
......
arch/alpha/kernel/sys_alcor.c
View file @ b340c708
...@@ -251,7 +251,7 @@ struct alpha_machine_vector alcor_mv __initmv = { ...@@ -251,7 +251,7 @@ struct alpha_machine_vector alcor_mv __initmv = {
DO_CIA_IO, DO_CIA_IO,
DO_CIA_BUS, DO_CIA_BUS,
machine_check: cia_machine_check, machine_check: cia_machine_check,
max_dma_address: ALPHA_MAX_DMA_ADDRESS, max_dma_address: ALPHA_ALCOR_MAX_DMA_ADDRESS,
min_io_address: EISA_DEFAULT_IO_BASE, min_io_address: EISA_DEFAULT_IO_BASE,
min_mem_address: CIA_DEFAULT_MEM_BASE, min_mem_address: CIA_DEFAULT_MEM_BASE,
......
arch/alpha/kernel/sys_sable.c
View file @ b340c708
...@@ -290,9 +290,9 @@ struct alpha_machine_vector sable_mv __initmv = { ...@@ -290,9 +290,9 @@ struct alpha_machine_vector sable_mv __initmv = {
DO_T2_IO, DO_T2_IO,
DO_T2_BUS, DO_T2_BUS,
machine_check: t2_machine_check, machine_check: t2_machine_check,
max_dma_address: ALPHA_MAX_DMA_ADDRESS, max_dma_address: ALPHA_SABLE_MAX_DMA_ADDRESS,
min_io_address: EISA_DEFAULT_IO_BASE, min_io_address: EISA_DEFAULT_IO_BASE,
min_mem_address: DEFAULT_MEM_BASE, min_mem_address: T2_DEFAULT_MEM_BASE,
nr_irqs: 40, nr_irqs: 40,
device_interrupt: sable_srm_device_interrupt, device_interrupt: sable_srm_device_interrupt,
...@@ -322,9 +322,9 @@ struct alpha_machine_vector sable_gamma_mv __initmv = { ...@@ -322,9 +322,9 @@ struct alpha_machine_vector sable_gamma_mv __initmv = {
DO_T2_IO, DO_T2_IO,
DO_T2_BUS, DO_T2_BUS,
machine_check: t2_machine_check, machine_check: t2_machine_check,
max_dma_address: ALPHA_MAX_DMA_ADDRESS, max_dma_address: ALPHA_SABLE_MAX_DMA_ADDRESS,
min_io_address: EISA_DEFAULT_IO_BASE, min_io_address: EISA_DEFAULT_IO_BASE,
min_mem_address: DEFAULT_MEM_BASE, min_mem_address: T2_DEFAULT_MEM_BASE,
nr_irqs: 40, nr_irqs: 40,
device_interrupt: sable_srm_device_interrupt, device_interrupt: sable_srm_device_interrupt,
......
arch/alpha/kernel/time.c
View file @ b340c708
...@@ -185,8 +185,8 @@ validate_cc_value(unsigned long cc) ...@@ -185,8 +185,8 @@ validate_cc_value(unsigned long cc)
unsigned int min, max; unsigned int min, max;
} cpu_hz[] __initdata = { } cpu_hz[] __initdata = {
[EV3_CPU] = { 50000000, 200000000 }, /* guess */ [EV3_CPU] = { 50000000, 200000000 }, /* guess */
[EV4_CPU] = { 150000000, 300000000 }, [EV4_CPU] = { 100000000, 300000000 },
[LCA4_CPU] = { 150000000, 300000000 }, /* guess */ [LCA4_CPU] = { 100000000, 300000000 }, /* guess */
[EV45_CPU] = { 200000000, 300000000 }, [EV45_CPU] = { 200000000, 300000000 },
[EV5_CPU] = { 250000000, 433000000 }, [EV5_CPU] = { 250000000, 433000000 },
[EV56_CPU] = { 333000000, 667000000 }, [EV56_CPU] = { 333000000, 667000000 },
...@@ -257,12 +257,12 @@ calibrate_cc_with_pic(void) ...@@ -257,12 +257,12 @@ calibrate_cc_with_pic(void)
cc = rpcc(); cc = rpcc();
do { do {
count++; count+=100; /* by 1 takes too long to timeout from 0 */
} while ((inb(0x61) & 0x20) == 0 && count > 0); } while ((inb(0x61) & 0x20) == 0 && count > 0);
cc = rpcc() - cc; cc = rpcc() - cc;
/* Error: ECTCNEVERSET or ECPUTOOFAST. */ /* Error: ECTCNEVERSET or ECPUTOOFAST. */
if (count <= 1) if (count <= 100)
return 0; return 0;
/* Error: ECPUTOOSLOW. */ /* Error: ECPUTOOSLOW. */
......
arch/alpha/kernel/traps.c
View file @ b340c708
...@@ -29,6 +29,7 @@ ...@@ -29,6 +29,7 @@
*/ */
static int opDEC_testing = 0; static int opDEC_testing = 0;
static int opDEC_fix = 0; static int opDEC_fix = 0;
static int opDEC_checked = 0;
static unsigned long opDEC_test_pc = 0; static unsigned long opDEC_test_pc = 0;
static void static void
...@@ -36,6 +37,8 @@ opDEC_check(void) ...@@ -36,6 +37,8 @@ opDEC_check(void)
{ {
unsigned long test_pc; unsigned long test_pc;
if (opDEC_checked) return;
lock_kernel(); lock_kernel();
opDEC_testing = 1; opDEC_testing = 1;
...@@ -48,6 +51,7 @@ opDEC_check(void) ...@@ -48,6 +51,7 @@ opDEC_check(void)
: ); : );
opDEC_testing = 0; opDEC_testing = 0;
opDEC_checked = 1;
unlock_kernel(); unlock_kernel();
} }
......
include/asm-alpha/core_t2.h
View file @ b340c708
...@@ -19,7 +19,7 @@ ...@@ -19,7 +19,7 @@
* *
*/ */
#define T2_MEM_R1_MASK 0x03ffffff /* Mem sparse region 1 mask is 26 bits */ #define T2_MEM_R1_MASK 0x07ffffff /* Mem sparse region 1 mask is 26 bits */
/* GAMMA-SABLE is a SABLE with EV5-based CPUs */ /* GAMMA-SABLE is a SABLE with EV5-based CPUs */
#define _GAMMA_BIAS 0x8000000000UL #define _GAMMA_BIAS 0x8000000000UL
...@@ -402,13 +402,17 @@ __EXTERN_INLINE void t2_outl(u32 b, unsigned long addr) ...@@ -402,13 +402,17 @@ __EXTERN_INLINE void t2_outl(u32 b, unsigned long addr)
* *
*/ */
#define t2_set_hae { \
msb = addr >> 27; \
addr &= T2_MEM_R1_MASK; \
set_hae(msb); \
}
__EXTERN_INLINE u8 t2_readb(unsigned long addr) __EXTERN_INLINE u8 t2_readb(unsigned long addr)
{ {
unsigned long result, msb; unsigned long result, msb;
msb = addr & 0xE0000000; t2_set_hae;
addr &= T2_MEM_R1_MASK;
set_hae(msb);
result = *(vip) ((addr << 5) + T2_SPARSE_MEM + 0x00); result = *(vip) ((addr << 5) + T2_SPARSE_MEM + 0x00);
return __kernel_extbl(result, addr & 3); return __kernel_extbl(result, addr & 3);
...@@ -418,9 +422,7 @@ __EXTERN_INLINE u16 t2_readw(unsigned long addr) ...@@ -418,9 +422,7 @@ __EXTERN_INLINE u16 t2_readw(unsigned long addr)
{ {
unsigned long result, msb; unsigned long result, msb;
msb = addr & 0xE0000000; t2_set_hae;
addr &= T2_MEM_R1_MASK;
set_hae(msb);
result = *(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x08); result = *(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x08);
return __kernel_extwl(result, addr & 3); return __kernel_extwl(result, addr & 3);
...@@ -431,9 +433,7 @@ __EXTERN_INLINE u32 t2_readl(unsigned long addr) ...@@ -431,9 +433,7 @@ __EXTERN_INLINE u32 t2_readl(unsigned long addr)
{ {
unsigned long msb; unsigned long msb;
msb = addr & 0xE0000000; t2_set_hae;
addr &= T2_MEM_R1_MASK;
set_hae(msb);
return *(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x18); return *(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x18);
} }
...@@ -442,9 +442,7 @@ __EXTERN_INLINE u64 t2_readq(unsigned long addr) ...@@ -442,9 +442,7 @@ __EXTERN_INLINE u64 t2_readq(unsigned long addr)
{ {
unsigned long r0, r1, work, msb; unsigned long r0, r1, work, msb;
msb = addr & 0xE0000000; t2_set_hae;
addr &= T2_MEM_R1_MASK;
set_hae(msb);
work = (addr << 5) + T2_SPARSE_MEM + 0x18; work = (addr << 5) + T2_SPARSE_MEM + 0x18;
r0 = *(vuip)(work); r0 = *(vuip)(work);
...@@ -456,9 +454,7 @@ __EXTERN_INLINE void t2_writeb(u8 b, unsigned long addr) ...@@ -456,9 +454,7 @@ __EXTERN_INLINE void t2_writeb(u8 b, unsigned long addr)
{ {
unsigned long msb, w; unsigned long msb, w;
msb = addr & 0xE0000000; t2_set_hae;
addr &= T2_MEM_R1_MASK;
set_hae(msb);
w = __kernel_insbl(b, addr & 3); w = __kernel_insbl(b, addr & 3);
*(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x00) = w; *(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x00) = w;
...@@ -468,9 +464,7 @@ __EXTERN_INLINE void t2_writew(u16 b, unsigned long addr) ...@@ -468,9 +464,7 @@ __EXTERN_INLINE void t2_writew(u16 b, unsigned long addr)
{ {
unsigned long msb, w; unsigned long msb, w;
msb = addr & 0xE0000000; t2_set_hae;
addr &= T2_MEM_R1_MASK;
set_hae(msb);
w = __kernel_inswl(b, addr & 3); w = __kernel_inswl(b, addr & 3);
*(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x08) = w; *(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x08) = w;
...@@ -481,9 +475,7 @@ __EXTERN_INLINE void t2_writel(u32 b, unsigned long addr) ...@@ -481,9 +475,7 @@ __EXTERN_INLINE void t2_writel(u32 b, unsigned long addr)
{ {
unsigned long msb; unsigned long msb;
msb = addr & 0xE0000000; t2_set_hae;
addr &= T2_MEM_R1_MASK;
set_hae(msb);
*(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x18) = b; *(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x18) = b;
} }
...@@ -492,9 +484,7 @@ __EXTERN_INLINE void t2_writeq(u64 b, unsigned long addr) ...@@ -492,9 +484,7 @@ __EXTERN_INLINE void t2_writeq(u64 b, unsigned long addr)
{ {
unsigned long msb, work; unsigned long msb, work;
msb = addr & 0xE0000000; t2_set_hae;
addr &= T2_MEM_R1_MASK;
set_hae(msb);
work = (addr << 5) + T2_SPARSE_MEM + 0x18; work = (addr << 5) + T2_SPARSE_MEM + 0x18;
*(vuip)work = b; *(vuip)work = b;
......
include/asm-alpha/dma.h
View file @ b340c708
...@@ -75,34 +75,49 @@ ...@@ -75,34 +75,49 @@
#define MAX_DMA_CHANNELS 8 #define MAX_DMA_CHANNELS 8
/* The maximum address that we can perform a DMA transfer to on Alpha XL, /*
due to a hardware SIO (PCI<->ISA bus bridge) chip limitation, is 64MB. ISA DMA limitations on Alpha platforms,
See <asm/apecs.h> for more info.
These may be due to SIO (PCI<->ISA bridge) chipset limitation, or
just a wiring limit.
*/ */
/* The maximum address that we can perform a DMA transfer to on RUFFIAN,
due to a hardware SIO (PCI<->ISA bus bridge) chip limitation, is 16MB. /* The maximum address for ISA DMA transfer on Alpha XL, due to an
See <asm/pyxis.h> for more info. hardware SIO limitation, is 64MB.
*/
#define ALPHA_XL_MAX_DMA_ADDRESS (IDENT_ADDR+0x04000000UL)
/* The maximum address for ISA DMA transfer on RUFFIAN and NAUTILUS,
due to an hardware SIO limitation, is 16MB.
*/ */
/* NOTE: we must define the maximum as something less than 64Mb, to prevent #define ALPHA_RUFFIAN_MAX_DMA_ADDRESS (IDENT_ADDR+0x01000000UL)
virt_to_bus() from returning an address in the first window, for a #define ALPHA_NAUTILUS_MAX_DMA_ADDRESS (IDENT_ADDR+0x01000000UL)
data area that goes beyond the 64Mb first DMA window. Sigh...
We MUST coordinate the maximum with <asm/apecs.h> for consistency. /* The maximum address for ISA DMA transfer on SABLE, and some ALCORs,
For now, this limit is set to 48Mb... 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)
/*
Maximum address for all the others is the complete 32-bit bus
address space.
*/ */
#define ALPHA_XL_MAX_DMA_ADDRESS (IDENT_ADDR+0x3000000UL) #define ALPHA_MAX_DMA_ADDRESS (IDENT_ADDR+0x100000000UL)
#define ALPHA_RUFFIAN_MAX_DMA_ADDRESS (IDENT_ADDR+0x1000000UL)
#define ALPHA_NAUTILUS_MAX_DMA_ADDRESS (IDENT_ADDR+0x1000000UL)
#define ALPHA_MAX_DMA_ADDRESS (~0UL)
#ifdef CONFIG_ALPHA_GENERIC #ifdef CONFIG_ALPHA_GENERIC
# define MAX_DMA_ADDRESS (alpha_mv.max_dma_address) # define MAX_DMA_ADDRESS (alpha_mv.max_dma_address)
#else #else
# ifdef CONFIG_ALPHA_XL # if defined(CONFIG_ALPHA_XL)
# define MAX_DMA_ADDRESS ALPHA_XL_MAX_DMA_ADDRESS # define MAX_DMA_ADDRESS ALPHA_XL_MAX_DMA_ADDRESS
# elif defined(CONFIG_ALPHA_RUFFIAN) # elif defined(CONFIG_ALPHA_RUFFIAN)
# define MAX_DMA_ADDRESS ALPHA_RUFFIAN_MAX_DMA_ADDRESS # define MAX_DMA_ADDRESS ALPHA_RUFFIAN_MAX_DMA_ADDRESS
# elif defined(CONFIG_ALPHA_NAUTILUS) # elif defined(CONFIG_ALPHA_NAUTILUS)
# define MAX_DMA_ADDRESS ALPHA_NAUTILUS_MAX_DMA_ADDRESS # define MAX_DMA_ADDRESS ALPHA_NAUTILUS_MAX_DMA_ADDRESS
# elif defined(CONFIG_ALPHA_SABLE)
# define MAX_DMA_ADDRESS ALPHA_SABLE_MAX_DMA_ADDRESS
# elif defined(CONFIG_ALPHA_ALCOR)
# define MAX_DMA_ADDRESS ALPHA_ALCOR_MAX_DMA_ADDRESS
# else # else
# define MAX_DMA_ADDRESS ALPHA_MAX_DMA_ADDRESS # define MAX_DMA_ADDRESS ALPHA_MAX_DMA_ADDRESS
# endif # endif
......
include/asm-alpha/floppy.h
View file @ b340c708
...@@ -97,25 +97,22 @@ static int FDC2 = -1; ...@@ -97,25 +97,22 @@ static int FDC2 = -1;
/* /*
* Most Alphas have no problems with floppy DMA crossing 64k borders, * Most Alphas have no problems with floppy DMA crossing 64k borders,
* except for XL and RUFFIAN. They are also the only one with DMA * except for certain ones, like XL and RUFFIAN.
* limits, so we use that to test in the generic kernel. *
* However, the test is simple and fast, and this *is* floppy, after all,
* so we do it for all platforms, just to make sure.
*
* This is advantageous in other circumstances as well, as in moving
* about the PCI DMA windows and forcing the floppy to start doing
* scatter-gather when it never had before, and there *is* a problem
* on that platform... ;-}
*/ */
#define __CROSS_64KB(a,s) \ #define CROSS_64KB(a,s) \
({ unsigned long __s64 = (unsigned long)(a); \ ({ unsigned long __s64 = (unsigned long)(a); \
unsigned long __e64 = __s64 + (unsigned long)(s) - 1; \ unsigned long __e64 = __s64 + (unsigned long)(s) - 1; \
(__s64 ^ __e64) & ~0xfffful; }) (__s64 ^ __e64) & ~0xfffful; })
#ifdef CONFIG_ALPHA_GENERIC
# define CROSS_64KB(a,s) (__CROSS_64KB(a,s) && ~alpha_mv.max_dma_address)
#else
# if defined(CONFIG_ALPHA_XL) || defined(CONFIG_ALPHA_RUFFIAN) || defined(CONFIG_ALPHA_NAUTILUS)
# define CROSS_64KB(a,s) __CROSS_64KB(a,s)
# else
# define CROSS_64KB(a,s) (0)
# endif
#endif
#define EXTRA_FLOPPY_PARAMS #define EXTRA_FLOPPY_PARAMS
#endif /* __ASM_ALPHA_FLOPPY_H */ #endif /* __ASM_ALPHA_FLOPPY_H */
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