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/linux-6.12.1/drivers/gpu/drm/amd/amdkfd/
Dkfd_flat_memory.c97 * The GPUVM_Base/GPUVM_Limit defines the aperture in the 64b space where we
115 * this case the GPUVM aperture (red) is defined and if a pointer falls in this
116 * aperture, we subtract the GPUVM_Base address and set the ATC bit to zero
150 * “Spare” aperture (APE1)
152 * We use the GPUVM aperture to differentiate ATC vs. GPUVM, but we also use
154 * config tables for setting cache policies. The “spare” (APE1) aperture is
156 * The default aperture isn’t an actual base/limit aperture; it is just the
163 * General Aperture definitions and rules
165 * An aperture register definition consists of a Base, Limit, Mtype, and
166 * usually an ATC bit indicating which translation tables that aperture uses.
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/linux-6.12.1/drivers/video/
Daperture.c3 #include <linux/aperture.h>
24 * first has to remove the generic driver. Aperture functions manage
68 * While the given example uses a platform device, the aperture helpers work
126 * et al for the registered framebuffer range, the aperture helpers call
212 * If the aperture helpers ever need to handle native drivers, this call in aperture_detach_platform_device()
220 * devm_aperture_acquire_for_platform_device - Acquires ownership of an aperture
222 * @pdev: the platform device to own the aperture
223 * @base: the aperture's byte offset in physical memory
224 * @size: the aperture size in bytes
226 * Installs the given device as the new owner of the aperture. The function
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/linux-6.12.1/arch/x86/kernel/
Daperture_64.c5 * Work around broken BIOSes that don't set an aperture, only set the
6 * aperture in the AGP bridge, or set too small aperture.
8 * If all fails map the aperture over some low memory. This is cheaper than
39 * the gart aperture that is used.
63 * If the first kernel maps the aperture over e820 RAM, the kdump kernel will
118 * Aperture has to be naturally aligned. This means a 2GB aperture in allocate_aperture()
126 pr_err("Cannot allocate aperture memory hole [mem %#010lx-%#010lx] (%uKB)\n", in allocate_aperture()
130 pr_info("Mapping aperture over RAM [mem %#010lx-%#010lx] (%uKB)\n", in allocate_aperture()
203 pr_info("pci 0000:%02x:%02x.%d: AGP aperture [bus addr %#010Lx-%#010Lx] (old size %uMB)\n", in read_agp()
207 …pr_info("pci 0000:%02x:%02x.%d: AGP aperture size %uMB (APSIZE %#x) is not right, using settings f… in read_agp()
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/linux-6.12.1/drivers/gpu/drm/amd/amdgpu/
Damdgpu_doorbell_mgr.c33 * Returns the value in the doorbell aperture at the
44 DRM_ERROR("reading beyond doorbell aperture: 0x%08x!\n", index); in amdgpu_mm_rdoorbell()
55 * Writes @v to the doorbell aperture at the
66 DRM_ERROR("writing beyond doorbell aperture: 0x%08x!\n", index); in amdgpu_mm_wdoorbell()
75 * Returns the value in the doorbell aperture at the
86 DRM_ERROR("reading beyond doorbell aperture: 0x%08x!\n", index); in amdgpu_mm_rdoorbell64()
97 * Writes @v to the doorbell aperture at the
108 DRM_ERROR("writing beyond doorbell aperture: 0x%08x!\n", index); in amdgpu_mm_wdoorbell64()
178 * GPU doorbell aperture helpers function.
Damdgpu_gart.c43 * The GART (Graphics Aperture Remapping Table) is an aperture
45 * the aperture and look like contiguous pages from the GPU's
46 * perspective. A page table maps the pages in the aperture
52 * Radeon hw has a separate AGP aperture that is programmed to
53 * point to the AGP aperture provided by the northbridge and the
54 * requests are passed through to the northbridge aperture.
292 * @offset: offset into the GPU's gart aperture
338 * @offset: offset into the GPU's gart aperture
374 * @offset: offset into the GPU's gart aperture
Damdgpu_gmc.h229 /* AGP aperture start and end in MC address space
233 * aperture maps to physical bus or IOVA addressed.
234 * AGP aperture is used to simulate FB in ZFB case.
235 * AGP aperture is also used for page table in system
242 /* GART aperture start and end in MC address space
246 * Under VMID0, logical address inside GART aperture will
253 /* Frame buffer aperture of this GPU device. Different from
255 * If driver uses FB aperture to access FB, driver get fb_start from
259 * VMID0's virtual address space to place the SYSVM aperture inside
/linux-6.12.1/Documentation/driver-api/
Daperture.rst3 Managing Ownership of the Framebuffer Aperture
6 .. kernel-doc:: drivers/video/aperture.c
9 .. kernel-doc:: include/linux/aperture.h
12 .. kernel-doc:: drivers/video/aperture.c
/linux-6.12.1/drivers/char/agp/
Dnvidia-agp.c31 volatile u32 __iomem *aperture; member
115 /* aperture size */ in nvidia_configure()
155 /* map aperture */ in nvidia_configure()
157 nvidia_private.aperture = in nvidia_configure()
160 if (!nvidia_private.aperture) in nvidia_configure()
179 /* unmap aperture */ in nvidia_cleanup()
180 iounmap((void __iomem *) nvidia_private.aperture); in nvidia_cleanup()
182 /* restore previous aperture size */ in nvidia_cleanup()
187 /* restore iorr for previous aperture size */ in nvidia_cleanup()
195 * Aperture sizes <64M still requires a full 64k GART directory, but
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Dintel-agp.c123 /* aperture size */ in intel_configure()
130 /* attbase - aperture base */ in intel_configure()
151 /* attbase - aperture base */ in intel_815_configure()
161 /* aperture size */ in intel_815_configure()
212 /* aperture size */ in intel_820_configure()
219 /* attbase - aperture base */ in intel_820_configure()
225 /* global enable aperture access */ in intel_820_configure()
242 /* aperture size */ in intel_840_configure()
249 /* attbase - aperture base */ in intel_840_configure()
270 /* aperture size */ in intel_845_configure()
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Duninorth-agp.c36 static char *aperture = NULL; variable
44 if (aperture) { in uninorth_fetch_size()
45 char *save = aperture; in uninorth_fetch_size()
47 size = memparse(aperture, &aperture) >> 20; in uninorth_fetch_size()
48 aperture = save; in uninorth_fetch_size()
55 dev_err(&agp_bridge->dev->dev, "invalid aperture size, " in uninorth_fetch_size()
58 aperture = NULL; in uninorth_fetch_size()
120 /* aperture size and gatt addr */ in uninorth_configure()
128 * the AGP aperture isn't mapped at bus physical address 0 in uninorth_configure()
496 * Not sure that u3 supports that high aperture sizes but it
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Damd64-agp.c116 * Get the current Aperture size from the x86-64.
243 /* Some basic sanity checks for the aperture. */
249 /* Request the Aperture. This catches cases when someone else in agp_aperture_valid()
255 !(aperture_resource = request_mem_region(aper, size, "aperture"))) { in agp_aperture_valid()
256 printk(KERN_ERR PFX "Aperture conflicts with PCI mapping.\n"); in agp_aperture_valid()
263 * W*s centric BIOS sometimes only set up the aperture in the AGP
265 * in aperture.c, but when IOMMU is not enabled or we run
267 * Unfortunately it is impossible to fix the aperture here because it's too late
305 dev_info(&agp->dev, "aperture size %u MB is not right, using settings from NB\n", in fix_northbridge()
315 dev_info(&agp->dev, "aperture from AGP @ %Lx size %u MB\n", in fix_northbridge()
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Dalpha-agp.c21 dma_addr = vmf->address - vmf->vma->vm_start + agp->aperture.bus_base; in alpha_core_agp_vm_fault()
54 agp_bridge->gart_bus_addr = agp->aperture.bus_base; in alpha_core_agp_configure()
165 * Build the aperture size descriptor in alpha_core_agp_setup()
168 aper_size->size = agp->aperture.size / (1024 * 1024); in alpha_core_agp_setup()
169 aper_size->num_entries = agp->aperture.size / PAGE_SIZE; in alpha_core_agp_setup()
Dvia-agp.c40 printk(KERN_ERR PFX "Unknown aperture size from AGP bridge (0x%x)\n", temp); in via_fetch_size()
50 /* aperture size */ in via_configure()
60 /* attbase - aperture GATT base */ in via_configure()
136 /* attbase - aperture GATT base */ in via_configure_agp3()
140 /* 1. Enable GTLB in RX90<7>, all AGP aperture access needs to fetch in via_configure_agp3()
142 * 2. Enable AGP aperture in RX91<0>. This bit controls the enabling of the in via_configure_agp3()
143 * graphics AGP aperture for the AGP3.0 port. in via_configure_agp3()
/linux-6.12.1/arch/arc/plat-axs10x/
Daxs10x.c122 * of which maps to a corresponding 256MB aperture in Target slave memory map.
124 * e.g. ARC cpu AXI Master's aperture 8 (0x8000_0000) is mapped to aperture 0
129 * e.g. aperture 14 (0xE000_0000) of ARC cpu is mapped to aperture 14
136 struct aperture { struct
162 static const struct aperture axc001_memmap[16] = {
185 static const struct aperture axc001_axi_tunnel_memmap[16] = {
208 static const struct aperture axs_mb_memmap[16] = {
228 axs101_set_memmap(void __iomem *base, const struct aperture map[16]) in axs101_set_memmap()
/linux-6.12.1/drivers/gpu/drm/
Ddrm_aperture.c3 #include <linux/aperture.h>
18 * first has to remove the generic driver. DRM aperture functions manage
112 * for the registered framebuffer range, the aperture helpers call
129 * framebuffer range, the firmware state gets lost. Aperture helpers will then
158 * @base: the aperture's base address in physical memory
159 * @size: aperture size in bytes
/linux-6.12.1/arch/x86/include/asm/
Dgart.h17 /* Aperture control register bits. */
97 printk(KERN_INFO "Aperture beyond 4GB. Ignoring.\n"); in aperture_valid()
101 printk(KERN_INFO "Aperture pointing to e820 RAM. Ignoring.\n"); in aperture_valid()
105 printk(KERN_INFO "Aperture too small (%d MB) than (%d MB)\n", in aperture_valid()
/linux-6.12.1/drivers/gpu/drm/radeon/
Dradeon_gart.c40 * The GART (Graphics Aperture Remapping Table) is an aperture
42 * the aperture and look like contiguous pages from the GPU's
43 * perspective. A page table maps the pages in the aperture
49 * Radeon hw has a separate AGP aperture that is programmed to
50 * point to the AGP aperture provided by the northbridge and the
51 * requests are passed through to the northbridge aperture.
235 * @offset: offset into the GPU's gart aperture
275 * @offset: offset into the GPU's gart aperture
/linux-6.12.1/arch/alpha/kernel/
Dcore_titan.c611 agp->aperture.bus_base = in titan_agp_setup()
613 agp->aperture.size = aper->pg_count * PAGE_SIZE; in titan_agp_setup()
614 agp->aperture.sysdata = aper; in titan_agp_setup()
622 struct titan_agp_aperture *aper = agp->aperture.sysdata; in titan_agp_cleanup()
685 struct titan_agp_aperture *aper = agp->aperture.sysdata; in titan_agp_bind_memory()
693 struct titan_agp_aperture *aper = agp->aperture.sysdata; in titan_agp_unbind_memory()
701 struct titan_agp_aperture *aper = agp->aperture.sysdata; in titan_agp_translate()
705 if (addr < agp->aperture.bus_base || in titan_agp_translate()
706 addr >= agp->aperture.bus_base + agp->aperture.size) { in titan_agp_translate()
775 * Aperture - not configured until ops.setup(). in titan_agp_info()
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Dcore_marvel.c881 agp->aperture.bus_base = in marvel_agp_setup()
883 agp->aperture.size = aper->pg_count * PAGE_SIZE; in marvel_agp_setup()
884 agp->aperture.sysdata = aper; in marvel_agp_setup()
892 struct marvel_agp_aperture *aper = agp->aperture.sysdata; in marvel_agp_cleanup()
977 struct marvel_agp_aperture *aper = agp->aperture.sysdata; in marvel_agp_bind_memory()
985 struct marvel_agp_aperture *aper = agp->aperture.sysdata; in marvel_agp_unbind_memory()
993 struct marvel_agp_aperture *aper = agp->aperture.sysdata; in marvel_agp_translate()
997 if (addr < agp->aperture.bus_base || in marvel_agp_translate()
998 addr >= agp->aperture.bus_base + agp->aperture.size) { in marvel_agp_translate()
1077 * Aperture - not configured until ops.setup(). in marvel_agp_info()
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/linux-6.12.1/tools/perf/pmu-events/arch/x86/haswell/
Duncore-interconnect.json3 …d entries in Coherency Tracker queue from allocation till deallocation. Aperture requests (snoops)…
8 …d entries in Coherency Tracker queue from allocation till deallocation. Aperture requests (snoops)…
13 …Description": "Number of entries allocated. Account for Any type: e.g. Snoop, Core aperture, etc.",
/linux-6.12.1/Documentation/devicetree/bindings/bus/
Dmvebu-mbus.txt34 - pcie-mem-aperture: This optional property contains the aperture for
40 - pcie-io-aperture: Just as explained for the above property, this
41 optional property contains the aperture for the
65 pcie-mem-aperture = <0xe0000000 0x8000000>;
66 pcie-io-aperture = <0xe8000000 0x100000>;
/linux-6.12.1/drivers/mtd/devices/
Dpmc551.c30 * aperture size, not the dram size, and the V370PDC supplies no
33 * unloading of the module with an aperture size smaller than
35 * size to be equal to the aperture size when the module is
38 * an asize option, to allow the specification of the aperture
39 * size. The aperture must be equal to or less then the memory
60 * * Modified driver to utilize a sliding aperture instead of
74 * about the aperture size. This should always accurately reflect the
395 * Disable existing aperture before probing memory size in fixup_pmc551()
646 MODULE_PARM_DESC(asize, "aperture size, must be <= memsize [1-1024]");
671 printk(KERN_NOTICE "pmc551: Invalid aperture size " in init_pmc551()
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/linux-6.12.1/drivers/video/fbdev/i810/
Di810_main.c31 #include <linux/aperture.h>
56 * voffset - framebuffer offset in MiB from aperture start address. In order for
68 * So for chipsets with 64 MiB Aperture sizes, 32 MiB for v_offset is okay, allowing up to
69 * 15 + 1 MiB of Framebuffer memory. For 32 MiB Aperture sizes, a v_offset of 8 MiB should
1637 par->fb.physical = par->aperture.physical+(par->fb.offset << 12); in i810_fix_pointers()
1638 par->fb.virtual = par->aperture.virtual+(par->fb.offset << 12); in i810_fix_pointers()
1639 par->iring.physical = par->aperture.physical + in i810_fix_pointers()
1641 par->iring.virtual = par->aperture.virtual + in i810_fix_pointers()
1643 par->cursor_heap.virtual = par->aperture.virtual+ in i810_fix_pointers()
1649 if (vram + 1 > par->aperture.size >> 20) in i810_fix_offsets()
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/linux-6.12.1/drivers/gpu/drm/i915/
Di915_pvinfo.h75 /* Aperture register balooning */
79 } mappable_gmadr; /* aperture */
84 } nonmappable_gmadr; /* non aperture */
/linux-6.12.1/drivers/ntb/hw/idt/
DKconfig19 with chosen valid aperture. For memory windows related BARs the
20 aperture settings shall determine the maximum size of memory windows

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