From 354e6f72d6fd5d3d2963efe030265972866cd969 Mon Sep 17 00:00:00 2001 From: eric miao Date: Fri, 25 Jun 2010 09:46:09 +0100 Subject: ARM: 6197/2: preliminary support for sparse IRQ So to allow NR_IRQS to be dynamic and platforms to specify the number of IRQs really needed. Acked-by: Paul Mundt Signed-off-by: Eric Miao Signed-off-by: Russell King --- arch/arm/include/asm/mach/arch.h | 1 + arch/arm/include/asm/mach/irq.h | 1 + 2 files changed, 2 insertions(+) (limited to 'arch/arm/include/asm/mach') diff --git a/arch/arm/include/asm/mach/arch.h b/arch/arm/include/asm/mach/arch.h index c59842dc7cb..5ee6f85236a 100644 --- a/arch/arm/include/asm/mach/arch.h +++ b/arch/arm/include/asm/mach/arch.h @@ -20,6 +20,7 @@ struct machine_desc { * by assembler code in head.S, head-common.S */ unsigned int nr; /* architecture number */ + unsigned int nr_irqs; /* number of IRQs */ unsigned int phys_io; /* start of physical io */ unsigned int io_pg_offst; /* byte offset for io * page tabe entry */ diff --git a/arch/arm/include/asm/mach/irq.h b/arch/arm/include/asm/mach/irq.h index 8920b2d6e3b..ce3eee9fe26 100644 --- a/arch/arm/include/asm/mach/irq.h +++ b/arch/arm/include/asm/mach/irq.h @@ -17,6 +17,7 @@ struct seq_file; /* * This is internal. Do not use it. */ +extern unsigned int arch_nr_irqs; extern void (*init_arch_irq)(void); extern void init_FIQ(void); extern int show_fiq_list(struct seq_file *, void *); -- cgit v1.2.3-70-g09d2 From 98c672cf1fa2a56f6f43e3f48b1208b83845582c Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 22 May 2010 18:18:57 +0100 Subject: ARM: Move platform memory reservations out of generic code Move the platform specific bootmem memory reservations out of arch/arm/mm/mmu.c into their respective platform files. Signed-off-by: Russell King --- arch/arm/include/asm/mach/arch.h | 1 + arch/arm/mach-clps711x/edb7211-arch.c | 8 ++++ arch/arm/mach-integrator/common.h | 1 + arch/arm/mach-integrator/core.c | 12 ++++++ arch/arm/mach-integrator/integrator_ap.c | 3 ++ arch/arm/mach-integrator/integrator_cp.c | 3 ++ arch/arm/mach-pxa/palmt5.c | 7 ++++ arch/arm/mach-pxa/palmtreo.c | 9 +++++ arch/arm/mach-s3c2410/mach-h1940.c | 9 +++++ arch/arm/mach-s3c2440/mach-rx1950.c | 9 +++++ arch/arm/mach-s3c2440/mach-rx3715.c | 9 +++++ arch/arm/mach-u300/u300.c | 17 +++++++++ arch/arm/mm/init.c | 5 ++- arch/arm/mm/mm.h | 3 +- arch/arm/mm/mmu.c | 63 ++------------------------------ arch/arm/mm/nommu.c | 2 +- 16 files changed, 98 insertions(+), 63 deletions(-) create mode 100644 arch/arm/mach-integrator/common.h (limited to 'arch/arm/include/asm/mach') diff --git a/arch/arm/include/asm/mach/arch.h b/arch/arm/include/asm/mach/arch.h index c59842dc7cb..d425f2b6efe 100644 --- a/arch/arm/include/asm/mach/arch.h +++ b/arch/arm/include/asm/mach/arch.h @@ -37,6 +37,7 @@ struct machine_desc { void (*fixup)(struct machine_desc *, struct tag *, char **, struct meminfo *); + void (*reserve)(void);/* reserve mem blocks */ void (*map_io)(void);/* IO mapping function */ void (*init_irq)(void); struct sys_timer *timer; /* system tick timer */ diff --git a/arch/arm/mach-clps711x/edb7211-arch.c b/arch/arm/mach-clps711x/edb7211-arch.c index 41a4425617c..077f4051a06 100644 --- a/arch/arm/mach-clps711x/edb7211-arch.c +++ b/arch/arm/mach-clps711x/edb7211-arch.c @@ -18,6 +18,7 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include +#include #include #include @@ -29,6 +30,12 @@ extern void edb7211_map_io(void); +/* Reserve screen memory region at the start of main system memory. */ +static void __init edb7211_reserve(void) +{ + reserve_bootmem(PHYS_OFFSET, 0x00020000, BOOTMEM_DEFAULT); +} + static void __init fixup_edb7211(struct machine_desc *desc, struct tag *tags, char **cmdline, struct meminfo *mi) @@ -55,6 +62,7 @@ MACHINE_START(EDB7211, "CL-EDB7211 (EP7211 eval board)") .boot_params = 0xc0020100, /* 0xc0000000 - 0xc001ffff can be video RAM */ .fixup = fixup_edb7211, .map_io = edb7211_map_io, + .reserve = edb7211_reserve, .init_irq = clps711x_init_irq, .timer = &clps711x_timer, MACHINE_END diff --git a/arch/arm/mach-integrator/common.h b/arch/arm/mach-integrator/common.h new file mode 100644 index 00000000000..5f96e1518aa --- /dev/null +++ b/arch/arm/mach-integrator/common.h @@ -0,0 +1 @@ +void integrator_reserve(void); diff --git a/arch/arm/mach-integrator/core.c b/arch/arm/mach-integrator/core.c index b02cfc06e0a..f815a1863f7 100644 --- a/arch/arm/mach-integrator/core.c +++ b/arch/arm/mach-integrator/core.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -30,6 +31,7 @@ #include #include #include +#include static struct amba_pl010_data integrator_uart_data; @@ -215,3 +217,13 @@ void cm_control(u32 mask, u32 set) } EXPORT_SYMBOL(cm_control); + +/* + * We need to stop things allocating the low memory; ideally we need a + * better implementation of GFP_DMA which does not assume that DMA-able + * memory starts at zero. + */ +void __init integrator_reserve(void) +{ + reserve_bootmem(PHYS_OFFSET, __pa(swapper_pg_dir) - PHYS_OFFSET, BOOTMEM_DEFAULT); +} diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c index 227cf4d0508..6ab5a03ab9d 100644 --- a/arch/arm/mach-integrator/integrator_ap.c +++ b/arch/arm/mach-integrator/integrator_ap.c @@ -48,6 +48,8 @@ #include #include +#include "common.h" + /* * All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx * is the (PA >> 12). @@ -502,6 +504,7 @@ MACHINE_START(INTEGRATOR, "ARM-Integrator") .io_pg_offst = ((0xf1600000) >> 18) & 0xfffc, .boot_params = 0x00000100, .map_io = ap_map_io, + .reserve = integrator_reserve, .init_irq = ap_init_irq, .timer = &ap_timer, .init_machine = ap_init, diff --git a/arch/arm/mach-integrator/integrator_cp.c b/arch/arm/mach-integrator/integrator_cp.c index cde57b2b83b..05db40e3c4f 100644 --- a/arch/arm/mach-integrator/integrator_cp.c +++ b/arch/arm/mach-integrator/integrator_cp.c @@ -43,6 +43,8 @@ #include +#include "common.h" + #define INTCP_PA_FLASH_BASE 0x24000000 #define INTCP_FLASH_SIZE SZ_32M @@ -601,6 +603,7 @@ MACHINE_START(CINTEGRATOR, "ARM-IntegratorCP") .io_pg_offst = ((0xf1600000) >> 18) & 0xfffc, .boot_params = 0x00000100, .map_io = intcp_map_io, + .reserve = integrator_reserve, .init_irq = intcp_init_irq, .timer = &cp_timer, .init_machine = intcp_init, diff --git a/arch/arm/mach-pxa/palmt5.c b/arch/arm/mach-pxa/palmt5.c index 5305a3993e6..39fd788ab63 100644 --- a/arch/arm/mach-pxa/palmt5.c +++ b/arch/arm/mach-pxa/palmt5.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include @@ -396,6 +397,11 @@ static void __init palmt5_udc_init(void) } } +static void __init palmt5_reserve(void) +{ + reserve_bootmem(0xa0200000, 0x1000, BOOTMEM_EXCLUSIVE); +} + static void __init palmt5_init(void) { pxa2xx_mfp_config(ARRAY_AND_SIZE(palmt5_pin_config)); @@ -421,6 +427,7 @@ MACHINE_START(PALMT5, "Palm Tungsten|T5") .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc, .boot_params = 0xa0000100, .map_io = pxa_map_io, + .reserve = palmt5_reserve, .init_irq = pxa27x_init_irq, .timer = &pxa_timer, .init_machine = palmt5_init diff --git a/arch/arm/mach-pxa/palmtreo.c b/arch/arm/mach-pxa/palmtreo.c index d8b4469607a..f5db4f7d715 100644 --- a/arch/arm/mach-pxa/palmtreo.c +++ b/arch/arm/mach-pxa/palmtreo.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include #include @@ -633,6 +634,12 @@ static void __init treo_lcd_power_init(void) treo_lcd_screen.pxafb_lcd_power = treo_lcd_power; } +static void __init treo_reserve(void) +{ + reserve_bootmem(0xa0000000, 0x1000, BOOTMEM_EXCLUSIVE); + reserve_bootmem(0xa2000000, 0x1000, BOOTMEM_EXCLUSIVE); +} + static void __init treo_init(void) { pxa_set_ffuart_info(NULL); @@ -668,6 +675,7 @@ MACHINE_START(TREO680, "Palm Treo 680") .io_pg_offst = io_p2v(0x40000000), .boot_params = 0xa0000100, .map_io = pxa_map_io, + .reserve = treo_reserve, .init_irq = pxa27x_init_irq, .timer = &pxa_timer, .init_machine = treo680_init, @@ -691,6 +699,7 @@ MACHINE_START(CENTRO, "Palm Centro 685") .io_pg_offst = io_p2v(0x40000000), .boot_params = 0xa0000100, .map_io = pxa_map_io, + .reserve = treo_reserve, .init_irq = pxa27x_init_irq, .timer = &pxa_timer, .init_machine = centro_init, diff --git a/arch/arm/mach-s3c2410/mach-h1940.c b/arch/arm/mach-s3c2410/mach-h1940.c index 779b45b3f80..2407aab4d1b 100644 --- a/arch/arm/mach-s3c2410/mach-h1940.c +++ b/arch/arm/mach-s3c2410/mach-h1940.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -304,6 +305,13 @@ static void __init h1940_map_io(void) s3c_pm_init(); } +/* H1940 and RX3715 need to reserve this for suspend */ +static void __init h1940_reserve(void) +{ + reserve_bootmem(0x30003000, 0x1000, BOOTMEM_DEFAULT); + reserve_bootmem(0x30081000, 0x1000, BOOTMEM_DEFAULT); +} + static void __init h1940_init_irq(void) { s3c24xx_init_irq(); @@ -346,6 +354,7 @@ MACHINE_START(H1940, "IPAQ-H1940") .io_pg_offst = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc, .boot_params = S3C2410_SDRAM_PA + 0x100, .map_io = h1940_map_io, + .reserve = h1940_reserve, .init_irq = h1940_init_irq, .init_machine = h1940_init, .timer = &s3c24xx_timer, diff --git a/arch/arm/mach-s3c2440/mach-rx1950.c b/arch/arm/mach-s3c2440/mach-rx1950.c index 8603b577a24..f26d5d60c13 100644 --- a/arch/arm/mach-s3c2440/mach-rx1950.c +++ b/arch/arm/mach-s3c2440/mach-rx1950.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -570,12 +571,20 @@ static void __init rx1950_init_machine(void) platform_add_devices(rx1950_devices, ARRAY_SIZE(rx1950_devices)); } +/* H1940 and RX3715 need to reserve this for suspend */ +static void __init rx1950_reserve(void) +{ + reserve_bootmem(0x30003000, 0x1000, BOOTMEM_DEFAULT); + reserve_bootmem(0x30081000, 0x1000, BOOTMEM_DEFAULT); +} + MACHINE_START(RX1950, "HP iPAQ RX1950") /* Maintainers: Vasily Khoruzhick */ .phys_io = S3C2410_PA_UART, .io_pg_offst = (((u32) S3C24XX_VA_UART) >> 18) & 0xfffc, .boot_params = S3C2410_SDRAM_PA + 0x100, .map_io = rx1950_map_io, + .reserve = rx1950_reserve, .init_irq = s3c24xx_init_irq, .init_machine = rx1950_init_machine, .timer = &s3c24xx_timer, diff --git a/arch/arm/mach-s3c2440/mach-rx3715.c b/arch/arm/mach-s3c2440/mach-rx3715.c index d2946de3f36..6ebdb7bcf08 100644 --- a/arch/arm/mach-s3c2440/mach-rx3715.c +++ b/arch/arm/mach-s3c2440/mach-rx3715.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -191,6 +192,13 @@ static void __init rx3715_map_io(void) s3c24xx_init_uarts(rx3715_uartcfgs, ARRAY_SIZE(rx3715_uartcfgs)); } +/* H1940 and RX3715 need to reserve this for suspend */ +static void __init rx3715_reserve(void) +{ + reserve_bootmem(0x30003000, 0x1000, BOOTMEM_DEFAULT); + reserve_bootmem(0x30081000, 0x1000, BOOTMEM_DEFAULT); +} + static void __init rx3715_init_irq(void) { s3c24xx_init_irq(); @@ -214,6 +222,7 @@ MACHINE_START(RX3715, "IPAQ-RX3715") .io_pg_offst = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc, .boot_params = S3C2410_SDRAM_PA + 0x100, .map_io = rx3715_map_io, + .reserve = rx3715_reserve, .init_irq = rx3715_init_irq, .init_machine = rx3715_init_machine, .timer = &s3c24xx_timer, diff --git a/arch/arm/mach-u300/u300.c b/arch/arm/mach-u300/u300.c index d2a0b8847a1..178dca4f955 100644 --- a/arch/arm/mach-u300/u300.c +++ b/arch/arm/mach-u300/u300.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -22,6 +23,21 @@ #include #include +static void __init u300_reserve(void) +{ + /* + * U300 - This platform family can share physical memory + * between two ARM cpus, one running Linux and the other + * running another OS. + */ +#ifdef CONFIG_MACH_U300_SINGLE_RAM +#if ((CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1) == 1) && \ + CONFIG_MACH_U300_2MB_ALIGNMENT_FIX + reserve_bootmem(PHYS_OFFSET, 0x00100000, BOOTMEM_DEFAULT); +#endif +#endif +} + static void __init u300_init_machine(void) { u300_init_devices(); @@ -49,6 +65,7 @@ MACHINE_START(U300, MACH_U300_STRING) .io_pg_offst = ((U300_AHB_PER_VIRT_BASE) >> 18) & 0xfffc, .boot_params = BOOT_PARAMS_OFFSET, .map_io = u300_map_io, + .reserve = u300_reserve, .init_irq = u300_init_irq, .timer = &u300_timer, .init_machine = u300_init_machine, diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 4d2720888c5..1a227eea64b 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -358,7 +358,7 @@ static void arm_memory_present(struct meminfo *mi) } #endif -void __init bootmem_init(void) +void __init bootmem_init(struct machine_desc *mdesc) { struct meminfo *mi = &meminfo; unsigned long min, max_low, max_high; @@ -380,6 +380,9 @@ void __init bootmem_init(void) */ reserve_special_regions(); + if (mdesc->reserve) + mdesc->reserve(); + /* * If the initrd is present, reserve its memory. */ diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h index 7b19c90ab29..afafe4fc543 100644 --- a/arch/arm/mm/mm.h +++ b/arch/arm/mm/mm.h @@ -28,5 +28,6 @@ extern void __flush_dcache_page(struct address_space *mapping, struct page *page #endif -void __init bootmem_init(void); +struct machine_desc; +void __init bootmem_init(struct machine_desc *); void reserve_special_regions(void); diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index ddb1bee6de7..1676d017a93 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -17,7 +17,6 @@ #include #include -#include #include #include #include @@ -831,8 +830,6 @@ static inline void prepare_page_table(void) */ void __init reserve_special_regions(void) { - unsigned long res_size = 0; - /* * Register the kernel text and data with bootmem. * Note that this can only be in node 0. @@ -850,68 +847,14 @@ void __init reserve_special_regions(void) reserve_bootmem(__pa(swapper_pg_dir), PTRS_PER_PGD * sizeof(pgd_t), BOOTMEM_DEFAULT); - /* - * Hmm... This should go elsewhere, but we really really need to - * stop things allocating the low memory; ideally we need a better - * implementation of GFP_DMA which does not assume that DMA-able - * memory starts at zero. - */ - if (machine_is_integrator() || machine_is_cintegrator()) - res_size = __pa(swapper_pg_dir) - PHYS_OFFSET; - - /* - * These should likewise go elsewhere. They pre-reserve the - * screen memory region at the start of main system memory. - */ - if (machine_is_edb7211()) - res_size = 0x00020000; - if (machine_is_p720t()) - res_size = 0x00014000; - - /* H1940, RX3715 and RX1950 need to reserve this for suspend */ - - if (machine_is_h1940() || machine_is_rx3715() - || machine_is_rx1950()) { - reserve_bootmem(0x30003000, 0x1000, BOOTMEM_DEFAULT); - reserve_bootmem(0x30081000, 0x1000, BOOTMEM_DEFAULT); - } - - if (machine_is_palmld() || machine_is_palmtx()) { - reserve_bootmem(0xa0000000, 0x1000, BOOTMEM_EXCLUSIVE); - reserve_bootmem(0xa0200000, 0x1000, BOOTMEM_EXCLUSIVE); - } - - if (machine_is_treo680() || machine_is_centro()) { - reserve_bootmem(0xa0000000, 0x1000, BOOTMEM_EXCLUSIVE); - reserve_bootmem(0xa2000000, 0x1000, BOOTMEM_EXCLUSIVE); - } - - if (machine_is_palmt5()) - reserve_bootmem(0xa0200000, 0x1000, BOOTMEM_EXCLUSIVE); - - /* - * U300 - This platform family can share physical memory - * between two ARM cpus, one running Linux and the other - * running another OS. - */ - if (machine_is_u300()) { -#ifdef CONFIG_MACH_U300_SINGLE_RAM -#if ((CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1) == 1) && \ - CONFIG_MACH_U300_2MB_ALIGNMENT_FIX - res_size = 0x00100000; -#endif -#endif - } - #ifdef CONFIG_SA1111 /* * Because of the SA1111 DMA bug, we want to preserve our * precious DMA-able memory... */ - res_size = __pa(swapper_pg_dir) - PHYS_OFFSET; + reserve_bootmem(PHYS_OFFSET, __pa(swapper_pg_dir) - PHYS_OFFSET, + BOOTMEM_DEFAULT); #endif - if (res_size) - reserve_bootmem(PHYS_OFFSET, res_size, BOOTMEM_DEFAULT); } /* @@ -1056,7 +999,7 @@ void __init paging_init(struct machine_desc *mdesc) sanity_check_meminfo(); prepare_page_table(); map_lowmem(); - bootmem_init(); + bootmem_init(mdesc); devicemaps_init(mdesc); kmap_init(); diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c index 25376d480b8..ed58ddbbc5b 100644 --- a/arch/arm/mm/nommu.c +++ b/arch/arm/mm/nommu.c @@ -46,7 +46,7 @@ void __init reserve_special_regions(void) */ void __init paging_init(struct machine_desc *mdesc) { - bootmem_init(); + bootmem_init(mdesc); } /* -- cgit v1.2.3-70-g09d2