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/Linux-v5.4/Documentation/media/uapi/cec/
Dcec-ioc-adap-g-phys-addr.rst21 CEC_ADAP_G_PHYS_ADDR, CEC_ADAP_S_PHYS_ADDR - Get or set the physical address
45 To query the current physical address applications call
47 driver stores the physical address.
49 To set a new physical address applications store the physical address in
57 To clear an existing physical address use ``CEC_PHYS_ADDR_INVALID``.
65 A :ref:`CEC_EVENT_STATE_CHANGE <CEC-EVENT-STATE-CHANGE>` event is sent when the physical address
68 The physical address is a 16-bit number where each group of 4 bits
69 represent a digit of the physical address a.b.c.d where the most
74 is supported. The physical address a device shall use is stored in the
78 different physical address of the form a.0.0.0 that the sources will
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/Linux-v5.4/Documentation/admin-guide/mm/
Dconcepts.rst14 address to a physical address.
21 The physical memory in a computer system is a limited resource and
23 the amount of memory that can be installed. The physical memory is not
29 All this makes dealing directly with physical memory quite complex and
32 The virtual memory abstracts the details of physical memory from the
34 physical memory (demand paging) and provides a mechanism for the
40 address encoded in that instruction to a `physical` address that the
43 The physical system memory is divided into page frames, or pages. The
49 Each physical memory page can be mapped as one or more virtual
51 translation from a virtual address used by programs to the physical
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/Linux-v5.4/Documentation/vm/
Dmemory-model.rst6 Physical Memory Model
9 Physical memory in a system may be addressed in different ways. The
10 simplest case is when the physical memory starts at address 0 and
26 All the memory models track the status of physical page frames using
30 mapping between the physical page frame number (PFN) and the
41 non-NUMA systems with contiguous, or mostly contiguous, physical
45 maps the entire physical memory. For most architectures, the holes
57 actual physical pages. In such case, the architecture specific
66 systems with physical memory starting at address different from 0.
71 The DISCONTIGMEM model treats the physical memory as a collection of
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/Linux-v5.4/include/linux/
Dpsp-sev.h93 * @tmr_address: system physical address used for SEV-ES
133 * @address: physical address of firmware image
144 * @address: physical address of region to place unique CPU ID(s)
216 * @dh_cert_address: physical address of DH certificate blob
218 * @session_address: physical address of session parameters
236 * @address: physical address of memory region to encrypt
249 * @address: physical address of memory region to encrypt
263 * @address: physical address containing the measurement blob
277 * @hdr_address: physical address containing the packet header
279 * @guest_address: system physical address of guest memory region
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/Linux-v5.4/drivers/mtd/ubi/
Dubi-media.h57 * initialization UBI finds out that there are available physical eraseblocks
59 * (the physical eraseblocks reserved for bad eraseblocks handling and other
60 * reserved physical eraseblocks are not taken). So, if there is a volume with
72 * of good physical eraseblocks the NAND chip on the device will have, but this
78 * Note, first UBI reserves some amount of physical eraseblocks for bad
80 * means that the pool of reserved physical eraseblocks will always be present.
94 * physical eraseblocks, don't allow the wear-leveling
136 * physical eraseblock. These values have to be the same for all physical
165 * @copy_flag: if this logical eraseblock was copied from another physical
174 * @data_pad: how many bytes at the end of this physical eraseblock are not
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Dio.c92 * ubi_io_read - read data from a physical eraseblock.
95 * @pnum: physical eraseblock number to read from
96 * @offset: offset within the physical eraseblock from where to read
99 * This function reads data from offset @offset of physical eraseblock @pnum
206 * ubi_io_write - write data to a physical eraseblock.
209 * @pnum: physical eraseblock number to write to
210 * @offset: offset within the physical eraseblock where to write
214 * of physical eraseblock @pnum. If all the data were successfully written,
216 * error code. If %-EIO is returned, the physical eraseblock most probably went
252 * We write to the data area of the physical eraseblock. Make in ubi_io_write()
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Dwl.c12 * physical eraseblocks and erase counters and knows nothing about logical
13 * eraseblocks, volumes, etc. From this sub-system's perspective all physical
14 * eraseblocks are of two types - used and free. Used physical eraseblocks are
15 * those that were "get" by the 'ubi_wl_get_peb()' function, and free physical
18 * Physical eraseblocks returned by 'ubi_wl_get_peb()' have only erase counter
19 * header. The rest of the physical eraseblock contains only %0xFF bytes.
21 * When physical eraseblocks are returned to the WL sub-system by means of the
27 * physical eraseblocks with low erase counter to free physical eraseblocks
30 * If the WL sub-system fails to erase a physical eraseblock, it marks it as
34 * in a physical eraseblock, it has to be moved. Technically this is the same
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Dubi.h172 * @pnum: physical eraseblock number
174 * This data structure is used in the WL sub-system. Each physical eraseblock
270 * @pnum: the physical eraseblock where the LEB can be found
294 * @reserved_pebs: how many physical eraseblocks are reserved for this volume
301 * @data_pad: how many bytes are not used at the end of physical eraseblocks to
458 * @rsvd_pebs: count of reserved physical eraseblocks
459 * @avail_pebs: count of available physical eraseblocks
460 * @beb_rsvd_pebs: how many physical eraseblocks are reserved for bad PEB
495 * @used: RB-tree of used physical eraseblocks
496 * @erroneous: RB-tree of erroneous used physical eraseblocks
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/Linux-v5.4/drivers/gpu/drm/msm/disp/dpu1/
Ddpu_encoder_phys.h26 * enum dpu_enc_split_role - Role this physical encoder will play in a
40 * enum dpu_enc_enable_state - current enabled state of the physical encoder
62 * provides for the physical encoders to use to callback.
80 * struct dpu_encoder_phys_ops - Interface the physical encoders provide to
106 * @trigger_start: Process start event on physical encoder
184 * struct dpu_encoder_phys - physical encoder that drives a single INTF block
204 * @vsync_cnt: Vsync count for the physical encoder
205 * @underrun_cnt: Underrun count for the physical encoder
249 * @base: Baseclass physical encoder structure
298 * dpu_encoder_phys_vid_init - Construct a new video mode physical encoder
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/Linux-v5.4/include/net/caif/
Dcfcnfg.h17 * enum cfcnfg_phy_preference - Physical preference HW Abstraction
19 * @CFPHYPREF_UNSPECIFIED: Default physical interface
21 * @CFPHYPREF_LOW_LAT: Default physical interface for low-latency
23 * @CFPHYPREF_HIGH_BW: Default physical interface for high-bandwidth
54 * cfcnfg_add_phy_layer() - Adds a physical layer to the CAIF stack.
58 * @phy_layer: Specify the physical layer. The transmit function
82 * cfcnfg_set_phy_state() - Set the state of the physical interface device.
84 * @phy_layer: Physical Layer representation
/Linux-v5.4/Documentation/
Dbus-virt-phys-mapping.txt21 controller the physical address of the buffers, which is correct on x86
22 (because all bus master devices see the physical memory mappings directly).
31 - CPU untranslated. This is the "physical" address. Physical address
45 Now, on normal PCs the bus address is exactly the same as the physical
58 the viewpoint of the devices, you have the reverse, and the physical memory
61 So when the CPU wants any bus master to write to physical memory 0, it
67 physical address: 0
76 physical address: 0
80 (but there are also Alphas where the physical address and the bus address
125 And you generally **never** want to use the physical address, because you can't
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Ddebugging-via-ohci1394.txt2 Using physical DMA provided by OHCI-1394 FireWire controllers for debugging
11 a "Physical Response Unit" which executes specific requests by employing
16 physical system memory and, for read requests, send the result of
17 the physical memory read back to the requester.
26 of physical address space. This can be a problem on IA64 machines where
31 physical addresses above 4 GB, but this feature is currently not enabled by
43 The firewire-ohci driver in drivers/firewire uses filtered physical
45 Pass the remote_dma=1 parameter to the driver to get unfiltered physical DMA.
81 disable all physical DMA on each bus reset.
107 controller implements a writable Physical Upper Bound register. This is
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/Linux-v5.4/include/xen/interface/hvm/
Dstart_info.h29 * NOTE: nothing will be loaded at physical address 0, so a 0 value in any
43 * | modlist_paddr | Physical address of an array of modules
46 * | cmdline_paddr | Physical address of the command line,
49 * | rsdp_paddr | Physical address of the RSDP ACPI data structure.
51 * | memmap_paddr | Physical address of the (optional) memory map. Only
64 * | paddr | Physical address of the module.
68 * | cmdline_paddr | Physical address of the command line,
131 uint64_t modlist_paddr; /* Physical address of an array of */
133 uint64_t cmdline_paddr; /* Physical address of the command line. */
134 uint64_t rsdp_paddr; /* Physical address of the RSDP ACPI data */
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/Linux-v5.4/arch/x86/mm/
Dnuma_emulation.c77 * Sets up nr_nodes fake nodes interleaved over physical nodes ranging from addr
122 * Continue to fill physical nodes with fake nodes until there is no in split_nodes_interleave()
167 * physical node. in split_nodes_interleave()
210 * Sets up fake nodes of `size' interleaved over physical nodes ranging from
229 * In the 'uniform' case split the passed in physical node by in split_nodes_size_interleave_uniform()
231 * physical block and try to create nodes of at least size in split_nodes_size_interleave_uniform()
234 * In the uniform case, split the nodes strictly by physical in split_nodes_size_interleave_uniform()
255 * (but not necessarily over physical nodes). in split_nodes_size_interleave_uniform()
269 * Fill physical nodes with fake nodes of size until there is no memory in split_nodes_size_interleave_uniform()
303 * physical node. in split_nodes_size_interleave_uniform()
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/Linux-v5.4/Documentation/arm/
Dporting.rst12 virtual address to a physical address. Normally, it is simply:
22 virtual or physical addresses here, since the MMU will be off at
43 Physical address to place the initial RAM disk. Only relevant if
54 Physical address of the struct param_struct or tag list, giving the
62 Physical start address of the first bank of RAM.
66 boot phase, virtual address PAGE_OFFSET will be mapped to physical
113 `pram` specifies the physical start address of RAM. Must always
116 `pio` is the physical address of an 8MB region containing IO for
/Linux-v5.4/fs/iomap/
Dswapfile.c17 uint64_t lowest_ppage; /* lowest physical addr seen (pages) */
18 uint64_t highest_ppage; /* highest physical addr seen (pages) */
24 * Collect physical extents for this swap file. Physical extents reported to
27 * page numbers of the swap device to the physical page-aligned extents.
39 * Round the start up and the end down so that the physical in iomap_swapfile_add_extent()
46 /* Skip too-short physical extents. */ in iomap_swapfile_add_extent()
75 * swap only cares about contiguous page-aligned physical extents and makes no
131 * Iterate a swap file's iomaps to construct physical extents that can be
/Linux-v5.4/Documentation/admin-guide/kdump/
Dvmcoreinfo.rst53 virtual to physical addresses.
60 direct kernel map to a physical address.
71 Physical addresses are translated to struct pages by treating them as
72 an index into the mem_map array. Right-shifting a physical address
270 corresponding physical address.
276 to physical addresses. The init_top_pgt is somewhat similar to
315 mask. This is used to remove the SME mask and obtain the true physical
333 Denotes whether physical address extensions are enabled. It has the cost
336 crash kernel when converting virtual addresses to physical addresses.
380 The offset between the kernel virtual and physical mappings. Used to
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/Linux-v5.4/drivers/hid/
Dhid-kye.c40 0xA0, /* Collection (Physical), */
60 0x34, /* Physical Minimum (0), */
62 0x46, 0x7C, 0x15, /* Physical Maximum (5500), */
66 0x46, 0xA0, 0x0F, /* Physical Maximum (4000), */
98 0xA0, /* Collection (Physical), */
118 0x34, /* Physical Minimum (0), */
120 0x46, 0x40, 0x1F, /* Physical Maximum (8000), */
124 0x46, 0x70, 0x17, /* Physical Maximum (6000), */
138 0xA0, /* Collection (Physical), */
155 0x34, /* Physical Minimum (0), */
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Dhid-uclogic-rdesc.c28 0xA0, /* Collection (Physical), */
46 0x34, /* Physical Minimum (0), */
48 0x46, 0xA0, 0x0F, /* Physical Maximum (4000), */
52 0x46, 0xB8, 0x0B, /* Physical Maximum (3000), */
73 0xA0, /* Collection (Physical), */
91 0x34, /* Physical Minimum (0), */
93 0x46, 0x7C, 0x15, /* Physical Maximum (5500), */
97 0x46, 0xA0, 0x0F, /* Physical Maximum (4000), */
111 0xA0, /* Collection (Physical), */
150 0xA0, /* Collection (Physical), */
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/Linux-v5.4/include/linux/platform_data/
Ddma-ste-dma40.h58 * physical mode
65 /* Maximum number of possible physical channels */
95 * @mode: channel mode: physical, logical, or operation
100 * @use_fixed_channel: if true, use physical channel specified by phy_channel
101 * @phy_channel: physical channel to use, only if use_fixed_channel is true
126 * @disabled_channels: A vector, ending with -1, that marks physical channels
128 * @soft_lli_chans: A vector, that marks physical channels will use LLI by SW
136 * @num_of_phy_chans: The number of physical channels implemented in HW.
/Linux-v5.4/drivers/net/wireless/ti/wlcore/
Dio.h121 int physical; in wlcore_read() local
123 physical = wlcore_translate_addr(wl, addr); in wlcore_read()
125 return wlcore_raw_read(wl, physical, buf, len, fixed); in wlcore_read()
131 int physical; in wlcore_write() local
133 physical = wlcore_translate_addr(wl, addr); in wlcore_write()
135 return wlcore_raw_write(wl, physical, buf, len, fixed); in wlcore_write()
156 int physical; in wlcore_read_hwaddr() local
162 physical = wlcore_translate_addr(wl, addr); in wlcore_read_hwaddr()
164 return wlcore_raw_read(wl, physical, buf, len, fixed); in wlcore_read_hwaddr()
/Linux-v5.4/include/linux/firmware/intel/
Dstratix10-smc.h24 * EL1 and EL3 communicates pointer as physical address rather than the
113 * a1: 64bit physical address of the configuration data memory block
120 * a1: 64bit physical address of 1st completed memory block if any completed
122 * a2: 64bit physical address of 2nd completed memory block if any completed
124 * a3: 64bit physical address of 3rd completed memory block if any completed
145 * a1: 64bit physical address of 1st completed memory block.
146 * a2: 64bit physical address of 2nd completed memory block if
148 * a3: 64bit physical address of 3rd completed memory block if
178 * Sync call used by service driver at EL1 to query the physical address of
187 * a1: start of physical address of reserved memory block.
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/Linux-v5.4/arch/mips/include/asm/mach-malta/
Dspaces.h21 * 0x80000000 - 0xffffffff: Physical memory aliases to 0x0 (2GB)
24 * the physical mask has been shifted to 0x80000000 which exploits the alias
26 * to peform direct mapping from virtual to physical addresses. In other
27 * words, the 0x80000000 virtual address maps to 0x80000000 physical address
31 * The last 64KB of physical memory are reserved for correct HIGHMEM
/Linux-v5.4/arch/nds32/include/asm/
Dmemory.h27 * Physical vs virtual RAM address space conversion. These are
50 * PFNs are used to describe any physical page; this means
51 * PFN 0 == physical address 0.
66 * Conversion between a struct page and a physical address.
68 * Note: when converting an unknown physical address to a
71 * for any physical address not corresponding to a system
/Linux-v5.4/include/linux/fsl/
Dguts.h267 __be32 pcph15sr; /* Physical Core PH15 Status Register */
268 __be32 pcph15setr; /* Physical Core PH15 Set Control Register */
269 __be32 pcph15clrr; /* Physical Core PH15 Clear Control Register */
270 __be32 pcph15psr; /* Physical Core PH15 Prev Status Register */
272 __be32 pcph20sr; /* Physical Core PH20 Status Register */
273 __be32 pcph20setr; /* Physical Core PH20 Set Control Register */
274 __be32 pcph20clrr; /* Physical Core PH20 Clear Control Register */
275 __be32 pcph20psr; /* Physical Core PH20 Prev Status Register */
276 __be32 pcpw20sr; /* Physical Core PW20 Status Register */
278 __be32 pcph30sr; /* Physical Core PH30 Status Register */
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