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/linux/Documentation/arch/xtensa/
H A Dmmu.rst62 5. The parent-bus-address value is rounded down to the nearest 256MB boundary
64 6. The IO area covers the entire 256MB segment of parent-bus-address; the
83 | VMALLOC area | VMALLOC_START 0xc0000000 128MB - 64KB
96 | | (4MB * DCACHE_N_COLORS)
104 | Cached KSEG | XCHAL_KSEG_CACHED_VADDR 0xd0000000 128MB
106 | Uncached KSEG | XCHAL_KSEG_BYPASS_VADDR 0xd8000000 128MB
108 | Cached KIO | XCHAL_KIO_CACHED_VADDR 0xe0000000 256MB
110 | Uncached KIO | XCHAL_KIO_BYPASS_VADDR 0xf0000000 256MB
114 256MB cached + 256MB uncached layout::
126 | VMALLOC area | VMALLOC_START 0xa0000000 128MB - 64KB
[all …]
/linux/drivers/accel/habanalabs/include/gaudi2/
H A Dgaudi2.h16 #define CFG_BAR_SIZE 0x10000000ull /* 256MB */
21 #define CFG_SIZE 0x8000000ull /* 96MB CFG + 32MB DBG*/
22 #define CFG_REGION_SIZE 0xC000000ull /* 192MB */
24 #define STM_FLASH_BASE_ADDR 0x1000007FF4000000ull /* Not 256MB aligned */
25 #define STM_FLASH_ALIGNED_OFF 0x4000000ull /* 256 MB alignment */
26 #define STM_FLASH_SIZE 0x2000000ull /* 32MB */
29 #define SPI_FLASH_SIZE 0x1000000ull /* 16MB */
38 #define BAR0_RSRVD_SIZE 0x1000000ull /* 16MB */
41 #define SRAM_SIZE 0x3000000ull /* 48MB */
113 #define MME_NUM_OF_LFSR_SEEDS 256
/linux/fs/btrfs/tests/
H A Dfree-space-tests.c420 * 256 extents on a x86_64 system at least, and a few other in test_steal_space_from_bitmap_to_extent()
430 * Extent entry covering free space range [128Mb - 256Kb, 128Mb - 128Kb[ in test_steal_space_from_bitmap_to_extent()
438 /* Bitmap entry covering free space range [128Mb + 512Kb, 256Mb[ */ in test_steal_space_from_bitmap_to_extent()
451 * Now make only the first 256Kb of the bitmap marked as free, so that in test_steal_space_from_bitmap_to_extent()
454 * [128Mb - 256Kb, 128Mb - 128Kb[ in test_steal_space_from_bitmap_to_extent()
455 * [128Mb + 512Kb, 128Mb + 768Kb[ in test_steal_space_from_bitmap_to_extent()
476 * Confirm that the bitmap range [128Mb + 768Kb, 256Mb[ isn't marked in test_steal_space_from_bitmap_to_extent()
486 * Confirm that the region [128Mb + 256Kb, 128Mb + 512Kb[, which is in test_steal_space_from_bitmap_to_extent()
495 * Confirm that the region [128Mb, 128Mb + 256Kb[, which is covered in test_steal_space_from_bitmap_to_extent()
504 * Now lets mark the region [128Mb, 128Mb + 512Kb[ as free too. But, in test_steal_space_from_bitmap_to_extent()
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/linux/tools/testing/selftests/tc-testing/tc-tests/qdiscs/
H A Dfq_codel.json17 …]+ limit 10240p flows 1024 quantum.*target 5ms interval 100ms memory_limit 32Mb ecn drop_batch 64",
38 …9]+ limit 1000p flows 1024 quantum.*target 5ms interval 100ms memory_limit 32Mb ecn drop_batch 64",
80 …]+ limit 10240p flows 1024 quantum.*target 2ms interval 100ms memory_limit 32Mb ecn drop_batch 64",
101 …-9]+ limit 10240p flows 1024 quantum.*target 5ms interval 5ms memory_limit 32Mb ecn drop_batch 64",
122 …imit 10240p flows 1024 quantum 9000 target 5ms interval 100ms memory_limit 32Mb ecn drop_batch 64",
143 …[0-9]+ limit 10240p flows 1024 quantum.*target 5ms interval 100ms memory_limit 32Mb drop_batch 64",
164 …ws 1024 quantum.*target 5ms ce_threshold 1.02s interval 100ms memory_limit 32Mb ecn drop_batch 64",
185 …+ limit 10240p flows 1024 quantum.*target 5ms interval 100ms memory_limit 32Mb ecn drop_batch 100",
203 …"cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root fq_codel limit 1000 flows 256 drop_batch …
206 …q_codel 1: root refcnt [0-9]+ limit 1000p flows 256 quantum.*target 5ms interval 100ms memory_limi…
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/linux/Documentation/devicetree/bindings/pci/
H A Dv3-v360epc-pci.txt11 second the configuration area register space, 16MB
18 each be exactly 256MB (0x10000000) in size.
22 be aligned to a 1MB boundary, and may be 1MB, 2MB, 4MB, 8MB, 16MB, 32MB,
23 64MB, 128MB, 256MB, 512MB, 1GB or 2GB in size. The memory should be marked
46 0x40000000 0 0x10000000 /* 256 MiB @ LB 40000000 1:1 */
48 0x50000000 0 0x10000000>; /* 256 MiB @ LB 50000000 1:1 */
50 0x20000000 0 0x20000000 /* 512 MB @ LB 20000000 1:1 */
/linux/Documentation/arch/powerpc/
H A Dpci_iov_resource_on_powernv.rst48 P8 supports up to 256 Partitionable Endpoints per PHB.
95 * It is divided into 256 segments of equal size. A table in the chip
98 the segment granularity is 2GB/256 = 8MB.
112 * Must be at least 256MB in size.
120 has 256 segments; however, there is no table for mapping a segment
180 1MB VF BAR0, the address in that VF BAR sets the base of an 8MB region.
181 This region is divided into eight contiguous 1MB regions, each of which
183 describes an 8MB region, the alignment requirement is for a single VF,
184 i.e., 1MB in this example.
188 - M32 window: There's one M32 window, and it is split into 256
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/linux/arch/x86/pci/
H A Dce4100.c38 #define MB (1024 * 1024) macro
98 DEFINE_REG(2, 0, 0x10, (16*MB), reg_init, reg_read, reg_write)
99 DEFINE_REG(2, 0, 0x14, (256), reg_init, reg_read, reg_write)
107 DEFINE_REG(8, 0, 0x10, (1*MB), reg_init, reg_read, reg_write)
110 DEFINE_REG(9, 0, 0x10 , (1*MB), reg_init, reg_read, reg_write)
112 DEFINE_REG(10, 0, 0x10, (256), reg_init, reg_read, reg_write)
113 DEFINE_REG(10, 0, 0x14, (256*MB), reg_init, reg_read, reg_write)
114 DEFINE_REG(11, 0, 0x10, (256), reg_init, reg_read, reg_write)
115 DEFINE_REG(11, 0, 0x14, (256), reg_init, reg_read, reg_write)
116 DEFINE_REG(11, 1, 0x10, (256), reg_init, reg_read, reg_write)
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/linux/arch/arc/plat-axs10x/
H A Daxs10x.c44 * | snps,dw-apb-intc (MB)| in axs10x_enable_gpio_intc_wire()
55 * DT hardware topology - connect MB intc directly to cpu intc in axs10x_enable_gpio_intc_wire()
94 char mb[32]; in axs10x_early_init() local
104 scnprintf(mb, 32, "MainBoard v%d", mb_rev); in axs10x_early_init()
105 axs10x_print_board_ver(CREG_MB_VER, mb); in axs10x_early_init()
121 * Each AXI master has a 4GB memory map specified as 16 apertures of 256MB, each
122 * of which maps to a corresponding 256MB aperture in Target slave memory map.
127 * Access from cpu to MB controllers such as GMAC is setup using AXI Tunnel:
131 * MB AXI Tunnel Master, which also has a mem map setup
133 * In the reverse direction, MB AXI Masters (e.g. GMAC) mem map is setup
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/linux/arch/powerpc/boot/dts/fsl/
H A Dp1021rdb-pc.dtsi46 /* 256KB for Vitesse 7385 Switch firmware */
53 /* 256KB for DTB Image */
59 /* 3.5 MB for Linux Kernel Image */
65 /* 10.75MB for JFFS2 based Root file System */
72 /* 256KB for QE ucode firmware*/
96 /* 1MB for u-boot Bootloader Image */
103 /* 1MB for DTB Image */
109 /* 4MB for Linux Kernel Image */
115 /* 4MB for Compressed Root file System Image */
121 /* 7MB for JFFS2 based Root file System */
[all …]
H A Dp1024rdb.dtsi46 /* 256KB for Vitesse 7385 Switch firmware */
53 /* 256KB for DTB Image */
59 /* 3.5 MB for Linux Kernel Image */
65 /* 11MB for JFFS2 based Root file System */
89 /* 1MB for u-boot Bootloader Image */
96 /* 1MB for DTB Image */
102 /* 4MB for Linux Kernel Image */
108 /* 4MB for Compressed Root file System Image */
114 /* 15MB for JFFS2 based Root file System */
120 /* 7MB for User Writable Area */
[all …]
H A Dp1020rdb-pc.dtsi46 /* 256KB for Vitesse 7385 Switch firmware */
53 /* 256KB for DTB Image */
59 /* 3.5 MB for Linux Kernel Image */
65 /* 11MB for JFFS2 based Root file System */
89 /* 1MB for u-boot Bootloader Image */
96 /* 1MB for DTB Image */
102 /* 4MB for Linux Kernel Image */
108 /* 4MB for Compressed Root file System Image */
114 /* 7MB for JFFS2 based Root file System */
120 /* 15MB for JFFS2 based Root file System */
[all …]
H A Dp2020rdb-pc.dtsi46 /* 256KB for Vitesse 7385 Switch firmware */
53 /* 256KB for DTB Image */
59 /* 3.5 MB for Linux Kernel Image */
65 /* 11MB for JFFS2 based Root file System */
89 /* 1MB for u-boot Bootloader Image */
96 /* 1MB for DTB Image */
102 /* 4MB for Linux Kernel Image */
108 /* 4MB for Compressed Root file System Image */
114 /* 7MB for JFFS2 based Root file System */
120 /* 15MB for JFFS2 based Root file System */
[all …]
H A Dp1020rdb.dtsi46 /* 256KB for Vitesse 7385 Switch firmware */
53 /* 256KB for DTB Image */
60 /* 3.5 MB for Linux Kernel Image */
67 /* 11MB for JFFS2 based Root file System */
91 /* 1MB for u-boot Bootloader Image */
98 /* 1MB for DTB Image */
105 /* 4MB for Linux Kernel Image */
112 /* 4MB for Compressed Root file System Image */
119 /* 7MB for JFFS2 based Root file System */
125 /* 15MB for JFFS2 based Root file System */
[all …]
H A Dp2020rdb.dts46 /* 256KB for Vitesse 7385 Switch firmware */
53 /* 256KB for DTB Image */
60 /* 3.5 MB for Linux Kernel Image */
67 /* 11MB for JFFS2 based Root file System */
91 /* 1MB for u-boot Bootloader Image */
98 /* 1MB for DTB Image */
105 /* 4MB for Linux Kernel Image */
112 /* 4MB for Compressed Root file System Image */
119 /* 7MB for JFFS2 based Root file System */
125 /* 15MB for JFFS2 based Root file System */
[all …]
/linux/arch/arm/boot/dts/marvell/
H A Darmada-xp-linksys-mamba.dts36 reg = <0x00000000 0x00000000 0x00000000 0x10000000>; /* 256MB */
333 reg = <0x0000000 0x100000>; /* 1MB */
339 reg = <0x100000 0x40000>; /* 256KB */
344 reg = <0x140000 0x40000>; /* 256KB */
349 reg = <0x900000 0x100000>; /* 1MB */
356 reg = <0xa00000 0x2800000>; /* 40MB */
361 reg = <0xd00000 0x2500000>; /* 37MB */
367 reg = <0x3200000 0x2800000>; /* 40MB */
372 reg = <0x3500000 0x2500000>; /* 37MB */
376 * 38MB, last MB is for the BBT, not writable
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/linux/arch/xtensa/
H A DKconfig625 specifies cache attributes for the corresponding 512MB memory
749 bool "MMUv2: 128MB cached + 128MB uncached"
751 MMUv2 compatible kernel memory map: TLB way 5 maps 128MB starting
754 KSEG_PADDR must be aligned to 128MB.
757 bool "256MB cached + 256MB uncached"
760 TLB way 6 maps 256MB starting at KSEG_PADDR to 0xb0000000
762 KSEG_PADDR must be aligned to 256MB.
765 bool "512MB cached + 512MB uncached"
768 TLB way 6 maps 512MB starting at KSEG_PADDR to 0xa0000000
770 KSEG_PADDR must be aligned to 256MB.
[all …]
/linux/arch/mips/bcm47xx/
H A Dprom.c69 * want to reuse the memory used by CFE (around 4MB). That means cfe_* in prom_init_mem()
73 * BCM47XX uses 128MB for addressing the ram, if the system contains in prom_init_mem()
88 pr_debug("Assume 128MB RAM\n"); in prom_init_mem()
157 * 0x80000000 0xc0000000 (1st: 256MB) in bcm47xx_prom_highmem_init()
158 * 0x90000000 0xd0000000 (2nd: 256MB) in bcm47xx_prom_highmem_init()
161 ENTRYLO(0x80000000 + (256 << 20)), in bcm47xx_prom_highmem_init()
/linux/arch/sparc/include/asm/
H A Dvaddrs.h26 * 256 pages will be taken as nocache per each
27 * SRMMU_NOCACHE_ALCRATIO MB of system memory.
29 * limits enforced: nocache minimum = 256 pages
32 #define SRMMU_NOCACHE_ALCRATIO 64 /* 256 pages per 64MB of system RAM */
/linux/arch/powerpc/include/asm/book3s/64/
H A Dradix-64k.h8 #define RADIX_PTE_INDEX_SIZE 5 // size: 8B << 5 = 256B, maps 2^5 x 64K = 2MB
9 #define RADIX_PMD_INDEX_SIZE 9 // size: 8B << 9 = 4KB, maps 2^9 x 2MB = 1GB
14 * We use a 256 byte PTE page fragment in radix
/linux/Documentation/translations/zh_CN/arch/riscv/
H A Dvm-layout.rst44 0000000000000000 | 0 | 0000003fffffffff | 256 GB | 用户空间虚拟内存，每个内存管理器不同
47 0000004000000000 | +256 GB | ffffffbfffffffff | ~16M TB | ... 巨大的、几乎64位宽的直到内核映射的-256GB地方
55 ffffffc6fee00000 | -228 GB | ffffffc6feffffff | 2 MB | fixmap
56 ffffffc6ff000000 | -228 GB | ffffffc6ffffffff | 16 MB | PCI io
91 ffff8d7ffee00000 | -114.5 TB | ffff8d7ffeffffff | 2 MB | fixmap
92 ffff8d7fff000000 | -114.5 TB | ffff8d7fffffffff | 16 MB | PCI io
/linux/drivers/accel/habanalabs/include/goya/
H A Dgoya.h15 #define CFG_BAR_SIZE 0x10000000ull /* 256MB */
19 #define CFG_SIZE 0x4000000 /* 32MB CFG + 32MB DBG*/
22 #define SRAM_SIZE 0x32A0000 /* 50.625MB */
/linux/drivers/usb/storage/
H A Dsddr09.c144 * 256 MB NAND flash has a 5-byte ID with 2nd byte 0xaa, 0xba, 0xca or 0xda.
149 { 0x6e, 20, 8, 4, 8, 2}, /* 1 MB */
150 { 0xe8, 20, 8, 4, 8, 2}, /* 1 MB */
151 { 0xec, 20, 8, 4, 8, 2}, /* 1 MB */
152 { 0x64, 21, 8, 4, 9, 2}, /* 2 MB */
153 { 0xea, 21, 8, 4, 9, 2}, /* 2 MB */
154 { 0x6b, 22, 9, 4, 9, 2}, /* 4 MB */
155 { 0xe3, 22, 9, 4, 9, 2}, /* 4 MB */
156 { 0xe5, 22, 9, 4, 9, 2}, /* 4 MB */
157 { 0xe6, 23, 9, 4, 10, 2}, /* 8 MB */
[all …]
/linux/arch/mips/mti-malta/
H A Dmalta-dtshim.c99 * obscures 256MB from 0x10000000-0x1fffffff. in gen_fdt_mem_array()
101 * Therefore we discard the 256MB behind the I/O region. in gen_fdt_mem_array()
115 * obscures 256MB from 0x10000000-0x1fffffff in the low alias in gen_fdt_mem_array()
118 * Simply access everything beyond the lowest 256MB of DDR using in gen_fdt_mem_array()
163 pr_warn("The bootloader didn't provide memsize: defaulting to 32MB\n"); in append_memory()
/linux/Documentation/arch/riscv/
H A Dvm-layout.rst39 …0000000000000000 | 0 | 0000003fffffffff | 256 GB | user-space virtual memory, different …
42 …0000004000000000 | +256 GB | ffffffbfffffffff | ~16M TB | ... huge, almost 64 bits wide hole of…
43 … | | | | virtual memory addresses up to the -256 GB
50 ffffffc4fea00000 | -236 GB | ffffffc4feffffff | 6 MB | fixmap
51 ffffffc4ff000000 | -236 GB | ffffffc4ffffffff | 16 MB | PCI io
87 ffff8d7ffea00000 | -114.5 TB | ffff8d7ffeffffff | 6 MB | fixmap
88 ffff8d7fff000000 | -114.5 TB | ffff8d7fffffffff | 16 MB | PCI io
123 ff1bfffffea00000 | -57 PB | ff1bfffffeffffff | 6 MB | fixmap
124 ff1bffffff000000 | -57 PB | ff1bffffffffffff | 16 MB | PCI io
/linux/drivers/video/fbdev/
H A Dpmagb-b-fb.c111 mb(); in pmagbbfb_setcolreg()
138 mb(); in pmagbbfb_erase_cursor()
188 u32 count0 = 8, count1 = 8, counttc = 16 * 256 + 8; in pmagbbfb_osc_setup()
194 mb(); in pmagbbfb_osc_setup()
196 mb(); in pmagbbfb_osc_setup()
207 mb(); in pmagbbfb_osc_setup()
228 (pmagbbfb_freqs[i] + 128) / 256 && in pmagbbfb_osc_setup()
230 (pmagbbfb_freqs[i] + 128) / 256) { in pmagbbfb_osc_setup()
235 if (par->osc0 - par->osc1 <= (par->osc0 + par->osc1 + 256) / 512 || in pmagbbfb_osc_setup()
236 par->osc1 - par->osc0 <= (par->osc0 + par->osc1 + 256) / 512) in pmagbbfb_osc_setup()
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