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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
commitf4cdf7ca9a1fdcca413157df19753f388a5a224e (patch)
tree60a31895b2446cd7fa27514e8c2843534a0de0da /drivers/net/ipa/ipa.h
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Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ...
Diffstat (limited to 'drivers/net/ipa/ipa.h')
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diff --git a/drivers/net/ipa/ipa.h b/drivers/net/ipa/ipa.h
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+++ b/drivers/net/ipa/ipa.h
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+/* SPDX-License-Identifier: GPL-2.0 */
+
+/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2018-2024 Linaro Ltd.
+ */
+#ifndef _IPA_H_
+#define _IPA_H_
+
+#include <linux/notifier.h>
+#include <linux/types.h>
+
+#include "gsi.h"
+#include "ipa_endpoint.h"
+#include "ipa_mem.h"
+#include "ipa_qmi.h"
+#include "ipa_version.h"
+
+struct net_device;
+
+struct ipa_interrupt;
+struct ipa_power;
+struct ipa_smp2p;
+
+/**
+ * struct ipa - IPA information
+ * @gsi: Embedded GSI structure
+ * @version: IPA hardware version
+ * @dev: IPA device pointer
+ * @completion: Used to signal pipeline clear transfer complete
+ * @nb: Notifier block used for remoteproc SSR
+ * @notifier: Remoteproc SSR notifier
+ * @smp2p: SMP2P information
+ * @power: IPA power information
+ * @table_addr: DMA address of filter/route table content
+ * @table_virt: Virtual address of filter/route table content
+ * @route_count: Total number of entries in a routing table
+ * @modem_route_count: Number of modem entries in a routing table
+ * @filter_count: Maximum number of entries in a filter table
+ * @interrupt: IPA Interrupt information
+ * @uc_powered: true if power is active by proxy for microcontroller
+ * @uc_loaded: true after microcontroller has reported it's ready
+ * @reg_virt: Virtual address used for IPA register access
+ * @regs: IPA register definitions
+ * @mem_addr: DMA address of IPA-local memory space
+ * @mem_virt: Virtual address of IPA-local memory space
+ * @mem_offset: Offset from @mem_virt used for access to IPA memory
+ * @mem_size: Total size (bytes) of memory at @mem_virt
+ * @mem_count: Number of entries in the mem array
+ * @mem: Array of IPA-local memory region descriptors
+ * @imem_iova: I/O virtual address of IPA region in IMEM
+ * @imem_size: Size of IMEM region
+ * @smem_iova: I/O virtual address of IPA region in SMEM
+ * @smem_size: Size of SMEM region
+ * @zero_addr: DMA address of preallocated zero-filled memory
+ * @zero_virt: Virtual address of preallocated zero-filled memory
+ * @zero_size: Size (bytes) of preallocated zero-filled memory
+ * @endpoint_count: Number of defined bits in most bitmaps below
+ * @available_count: Number of defined bits in the available bitmap
+ * @defined: Bitmap of endpoints defined in config data
+ * @available: Bitmap of endpoints supported by hardware
+ * @filtered: Bitmap of endpoints that support filtering
+ * @set_up: Bitmap of endpoints that are set up for use
+ * @enabled: Bitmap of currently enabled endpoints
+ * @modem_tx_count: Number of defined modem TX endoints
+ * @endpoint: Array of endpoint information
+ * @channel_map: Mapping of GSI channel to IPA endpoint
+ * @name_map: Mapping of IPA endpoint name to IPA endpoint
+ * @setup_complete: Flag indicating whether setup stage has completed
+ * @modem_state: State of modem (stopped, running)
+ * @modem_netdev: Network device structure used for modem
+ * @qmi: QMI information
+ */
+struct ipa {
+ struct gsi gsi;
+ enum ipa_version version;
+ struct device *dev;
+ struct completion completion;
+ struct notifier_block nb;
+ void *notifier;
+ struct ipa_smp2p *smp2p;
+ struct ipa_power *power;
+
+ dma_addr_t table_addr;
+ __le64 *table_virt;
+ u32 route_count;
+ u32 modem_route_count;
+ u32 filter_count;
+
+ struct ipa_interrupt *interrupt;
+ bool uc_powered;
+ bool uc_loaded;
+
+ void __iomem *reg_virt;
+ const struct regs *regs;
+
+ dma_addr_t mem_addr;
+ void *mem_virt;
+ u32 mem_offset;
+ u32 mem_size;
+ u32 mem_count;
+ const struct ipa_mem *mem;
+
+ unsigned long imem_iova;
+ size_t imem_size;
+
+ unsigned long smem_iova;
+ size_t smem_size;
+
+ dma_addr_t zero_addr;
+ void *zero_virt;
+ size_t zero_size;
+
+ /* Bitmaps indicating endpoint state */
+ u32 endpoint_count;
+ u32 available_count;
+ unsigned long *defined; /* Defined in configuration data */
+ unsigned long *available; /* Supported by hardware */
+ u64 filtered; /* Support filtering (AP and modem) */
+ unsigned long *set_up;
+ unsigned long *enabled;
+
+ u32 modem_tx_count;
+ struct ipa_endpoint endpoint[IPA_ENDPOINT_MAX];
+ struct ipa_endpoint *channel_map[GSI_CHANNEL_COUNT_MAX];
+ struct ipa_endpoint *name_map[IPA_ENDPOINT_COUNT];
+
+ bool setup_complete;
+
+ atomic_t modem_state; /* enum ipa_modem_state */
+ struct net_device *modem_netdev;
+ struct ipa_qmi qmi;
+};
+
+/**
+ * ipa_setup() - Perform IPA setup
+ * @ipa: IPA pointer
+ *
+ * IPA initialization is broken into stages: init; config; and setup.
+ * (These have inverses exit, deconfig, and teardown.)
+ *
+ * Activities performed at the init stage can be done without requiring
+ * any access to IPA hardware. Activities performed at the config stage
+ * require IPA power, because they involve access to IPA registers.
+ * The setup stage is performed only after the GSI hardware is ready
+ * (more on this below). The setup stage allows the AP to perform
+ * more complex initialization by issuing "immediate commands" using
+ * a special interface to the IPA.
+ *
+ * This function, @ipa_setup(), starts the setup stage.
+ *
+ * In order for the GSI hardware to be functional it needs firmware to be
+ * loaded (in addition to some other low-level initialization). This early
+ * GSI initialization can be done either by Trust Zone on the AP or by the
+ * modem.
+ *
+ * If it's done by Trust Zone, the AP loads the GSI firmware and supplies
+ * it to Trust Zone to verify and install. When this completes, if
+ * verification was successful, the GSI layer is ready and ipa_setup()
+ * implements the setup phase of initialization.
+ *
+ * If the modem performs early GSI initialization, the AP needs to know
+ * when this has occurred. An SMP2P interrupt is used for this purpose,
+ * and receipt of that interrupt triggers the call to ipa_setup().
+ */
+int ipa_setup(struct ipa *ipa);
+
+#endif /* _IPA_H_ */