AI Trajectory

null

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "KMSANReasoning": "",
  "NeedsKMSAN": false,
  "Reasoning": "The patch modifies error unwinding in ccp5_init() and cleanup in ccp5_destroy() within the AMD Cryptographic Coprocessor (CCP v5) driver (drivers/crypto/ccp/ccp-dev-v5.c). This driver requires specific physical AMD Secure Processor / CCP PCI hardware (vendor-specific ASIC) that is not emulated in standard virtualized environments (QEMU/GCE). Additionally, the changes reside exclusively in probe error unwinding and driver removal/teardown paths. Therefore, the modified code is structurally unreachable for fuzzing.",
  "WorthFuzzing": false
}

null

{
  "PatchDiff": "commit e41e3d0e6be602ea5c4d6019d2eaa00785cff861\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate:   Sat Sep 26 14:16:47 2026 +0000\n\n    syz-cluster: applied patch under review\n\ndiff --git a/drivers/crypto/ccp/ccp-dev-v5.c b/drivers/crypto/ccp/ccp-dev-v5.c\nindex dcd6aab51e476..dacde9614e8a7 100644\n--- a/drivers/crypto/ccp/ccp-dev-v5.c\n+++ b/drivers/crypto/ccp/ccp-dev-v5.c\n@@ -995,6 +995,8 @@ static int ccp5_init(struct ccp_device *ccp)\n \n e_irq:\n \tsp_free_ccp_irq(ccp-\u003esp, ccp);\n+\tif (ccp-\u003euse_tasklet)\n+\t\ttasklet_kill(\u0026ccp-\u003eirq_tasklet);\n \n e_pool:\n \tfor (i = 0; i \u003c ccp-\u003ecmd_q_count; i++)\n@@ -1046,6 +1048,8 @@ static void ccp5_destroy(struct ccp_device *ccp)\n \t\t\tkthread_stop(ccp-\u003ecmd_q[i].kthread);\n \n \tsp_free_ccp_irq(ccp-\u003esp, ccp);\n+\tif (ccp-\u003euse_tasklet)\n+\t\ttasklet_kill(\u0026ccp-\u003eirq_tasklet);\n \n \t/* Flush the cmd and backlog queue */\n \twhile (!list_empty(\u0026ccp-\u003ecmd)) {\n"
}

core

null

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch modifies error unwinding in ccp5_init() and cleanup in ccp5_destroy() within the AMD Cryptographic Coprocessor (CCP v5) driver (drivers/crypto/ccp/ccp-dev-v5.c). This driver requires specific physical AMD Secure Processor / CCP PCI hardware (vendor-specific ASIC) that is not emulated in standard virtualized environments (QEMU/GCE). Additionally, the changes reside exclusively in probe error unwinding and driver removal/teardown paths. Therefore, the modified code is structurally unreachable for fuzzing.",
  "WorthFuzzing": false
}

You are an expert Linux kernel maintainer and security engineer.
Your job is to review a provided patch series and evaluate whether it warrants fuzzing with syzkaller.

IMPORTANT: The changes have ALREADY been applied and committed as the HEAD commit in
your workspace. Do NOT rely on internal assumptions. You must actively use your code access
tools to inspect the actual source code, callers, and surrounding context.

================================================================================
1. CORE TRIAGE PHILOSOPHY
================================================================================
The goal of patch fuzzing is to discover crashes, regressions, exposed latent bugs,
and newly triggered assertions introduced by the patch series.

- REACHABILITY IS THE PRIMARY GATE:
  Fuzzing can only discover bugs in code that can actually execute in standard virtualized
  environments (GCE or QEMU, utilizing software-emulated devices like USB gadgets, netdev, tun/tap).
  If the modified code is structurally unreachable (see Section 2), it MUST NOT be fuzzed,
  regardless of whether it adds assertions or complex logic.

- DO NOT BLINDLY TRUST "NO FUNCTIONAL CHANGE" (NFCI) OR "REFACTORING" CLAIMS:
  Patch authors routinely label changes as "cleanups", "refactorings", or state
  "No functional change intended". Do NOT take these claims at face value.
  Code refactorings that rearrange logic, introduce helper functions, or alter state management
  in core subsystems frequently introduce subtle semantic shifts or uncover latent kernel bugs.
  If reachable executable code is modified or refactored, it MUST be fuzzed.

- NEW OR MODIFIED ASSERTIONS IN REACHABLE CODE MUST BE FUZZED:
  When a patch introduces or modifies runtime checks or assertions (e.g., WARN_ON*, VM_WARN_ON*,
  BUG_ON*, lockdep_assert*) in reachable code paths, it enforces new or stricter invariants.
  Even if the author believes the invariant always holds, fuzzing is essential to verify whether
  an unusual sequence of operations can violate it.

================================================================================
2. WHEN TO RETURN WorthFuzzing=false (NEGATIVE CRITERIA)
================================================================================
Return WorthFuzzing=false ONLY IF all modified code falls strictly into one or more of these categories:

- Non-kernel and non-executable changes:
  * Modifications to Documentation/, comments, or spelling fixes.
  * User-space directories, self-tests, samples, or scripts (e.g., tools/, samples/, scripts/, usr/)
    that do not affect the compiled kernel image (vmlinux) or kernel modules.
  * Purely decorative logging (e.g., message strings in pr_err, printk, dev_info) or tracepoints
    that do not alter control flow or data structures.
  * Build system or Kconfig changes that do not alter compiled C logic.
- Structurally unreachable hardware:
  * Vendor-specific PCIe switches, SmartNICs, or GPU drivers (e.g., mlxsw, pds_core, qed,
    ionic, amdgpu) requiring physical ASIC/PCIe cards not emulated in standard QEMU.
- Unreachable execution paths:
  * Driver teardown callbacks (.remove, .shutdown, pci_unregister_driver) executed only during
    physical PCI hot-unplug or manual sysfs driver unbinding.
  * Code paths exclusive to architectures other than the target architecture.

================================================================================
3. WHEN TO RETURN WorthFuzzing=true (POSITIVE CRITERIA)
================================================================================
Return WorthFuzzing=true whenever the patch touches reachable executable code, including:
- Core Subsystems:
  * Any logic modifications in memory management (mm/), synchronization/locking (kernel/locking/),
    BPF, scheduler, core networking, VFS, or syscall handling.
- Refactorings and Code Cleanups:
  * Any restructuring of reachable data structures, helper abstractions, or algorithm flows.
- Runtime Assertions and Defensive Checks:
  * Any introduction or alteration of assertions (WARN_ON*, VM_WARN_ON*, BUG_ON*, etc.) in reachable paths.
- Reachable Drivers and Protocols:
  * Drivers accessible via virtual buses (virtio, USB gadget, loopback, netlink, binder, sockets, etc.).

================================================================================
4. EXTRACTING FocusSymbols (PREVENTING DILUTION)
================================================================================
When WorthFuzzing=true, you must extract specific kernel functions into FocusSymbols to guide the fuzzer:

- AVOID UBIQUITOUS LIFECYCLE HOT-PATHS:
  Do NOT list generic, ubiquitous functions called by almost every program in the corpus
  (including, but not limited to: general memory allocators and deallocators, page fault
  and trap handlers, or core synchronization primitives; this is not an exhaustive list).
  Listing ubiquitous functions causes the fuzzer to classify thousands of unrelated tests as "focused",
  which severely dilutes fuzzing effort away from the actual changes.

- TARGET SPECIFIC FEATURE LOGIC AND ENTRYPOINTS:
  List functions that specifically implement the logic being added or altered, or direct API entrypoints
  for the subsystem feature under review.

- HANDLING STATIC INLINE FUNCTIONS IN HEADERS (.h):
  Compiler-inlined static functions (such as static inlines in mm/*.h or include/linux/*.h) lack
  distinct symbol addresses in vmlinux and cannot be targeted directly by symbol coverage filters.
  If the changes are primarily in static inline helpers, identify non-static, feature-specific caller
  functions in .c files that exercise them (avoiding ubiquitous lifecycle wrappers).

================================================================================
5. IDENTIFYING EnableConfigs
================================================================================
Identify any specific CONFIG_ options required to properly compile and reach the modified code:
- Inspect Kconfig files and #ifdef guards; do not make assumptions.
- Check "depends on" lines in Kconfig to include any non-standard parent subsystem configs needed.
- Strip any 'CONFIG_' prefix (e.g., return "NET_IPV4" instead of "CONFIG_NET_IPV4").
Prefer calling several tools at the same time to save round-trips.


Use set-results tool to provide results of the analysis.
It must be called exactly once before the final reply.
Ignore results of this tool.

Target architecture: amd64

For your convenience, here is the diff of the changes:
commit e41e3d0e6be602ea5c4d6019d2eaa00785cff861
Author: syz-cluster <triage@syzkaller.com>
Date:   Sat Sep 26 14:16:47 2026 +0000

    syz-cluster: applied patch under review

diff --git a/drivers/crypto/ccp/ccp-dev-v5.c b/drivers/crypto/ccp/ccp-dev-v5.c
index dcd6aab51e476..dacde9614e8a7 100644
--- a/drivers/crypto/ccp/ccp-dev-v5.c
+++ b/drivers/crypto/ccp/ccp-dev-v5.c
@@ -995,6 +995,8 @@ static int ccp5_init(struct ccp_device *ccp)
 
 e_irq:
 	sp_free_ccp_irq(ccp->sp, ccp);
+	if (ccp->use_tasklet)
+		tasklet_kill(&ccp->irq_tasklet);
 
 e_pool:
 	for (i = 0; i < ccp->cmd_q_count; i++)
@@ -1046,6 +1048,8 @@ static void ccp5_destroy(struct ccp_device *ccp)
 			kthread_stop(ccp->cmd_q[i].kthread);
 
 	sp_free_ccp_irq(ccp->sp, ccp);
+	if (ccp->use_tasklet)
+		tasklet_kill(&ccp->irq_tasklet);
 
 	/* Flush the cmd and backlog queue */
 	while (!list_empty(&ccp->cmd)) {

gemini-3.8-flash

null

null

							input: 3027
							output: 33
							thoughts: 473
						

**Analyzing the CCP Driver Patch**

Alright, let's dive into this patch. My immediate thought is to dissect it thoroughly, comparing the code changes against the established guidelines and functionality of the AMD Cryptographic Coprocessor (CCP) driver.

First, I see the patch modifies `drivers/crypto/ccp/ccp-dev-v5.c`. The diff itself seems straightforward, adding `tasklet_kill` calls within `ccp5_init` and `ccp5_destroy`, guarded by `ccp->use_tasklet`. This strongly suggests that there's a change in how the interrupt handling is managed. We're either introducing or refining the usage of tasklets for interrupt processing in the CCP driver, which could have implications on latency and CPU utilization.

To gain a deeper understanding, I need context. This warrants a more involved investigation. I need to refresh my understanding of how this specific CCP driver module (`drivers/crypto/ccp`) is configured and loaded. Is the CCP hardware requirement well-defined? What are the implications of introducing `tasklet_kill` in these specific functions? I'll need to check the relevant Kconfig options and the probe/initialization sequence to understand what triggers this `use_tasklet` flag.

I'll start with a quick grepper search to find all instances of `ccp->use_tasklet`, and then a review of `drivers/crypto/ccp/Kconfig` to determine how this functionality is enabled. After that I'll read through the relevant parts of the code to piece together the full picture of this change.

{
  "Expression": "config CRYPTO_DEV_CCP",
  "PathPrefix": "drivers/crypto/ccp"
}

{
  "Output": "drivers/crypto/ccp/Kconfig-1-# SPDX-License-Identifier: GPL-2.0-only\ndrivers/crypto/ccp/Kconfig:2:config CRYPTO_DEV_CCP_DD\ndrivers/crypto/ccp/Kconfig-3-\ttristate \"Secure Processor device driver\"\n--\ndrivers/crypto/ccp/Kconfig=10=config CRYPTO_DEV_SP_CCP\n--\ndrivers/crypto/ccp/Kconfig-22-\ndrivers/crypto/ccp/Kconfig:23:config CRYPTO_DEV_CCP_CRYPTO\ndrivers/crypto/ccp/Kconfig-24-\ttristate \"Encryption and hashing offload support\"\n--\ndrivers/crypto/ccp/Kconfig=38=config CRYPTO_DEV_SP_PSP\n--\ndrivers/crypto/ccp/Kconfig-49-\ndrivers/crypto/ccp/Kconfig:50:config CRYPTO_DEV_CCP_DEBUGFS\ndrivers/crypto/ccp/Kconfig-51-\tbool \"Enable CCP Internals in DebugFS\"\n"
}

gemini-3.8-flash

null

null

							input: 4133
							output: 35
							thoughts: 26
						

Here's my summary, as though I'm thinking through this process:

**Diving into the CCP Crypto Driver Configuration**

Okay, time to get a handle on this CCP crypto driver. First, I need to understand its configuration and build process, so let's start with the obvious: the `drivers/crypto/ccp/Kconfig` file. That's where all the configuration options are defined. I'll need to figure out what features are available, which ones are enabled by default, and how they're exposed to the user during the kernel build process. Are there any dependencies on other kernel modules or features? Anything specific to hardware variants? I'm expecting standard Kconfig fare, but you never know.

Then, I'll need to look at `drivers/crypto/ccp/Makefile`. This is the build instructions, so this will tell me how the source files are compiled and linked, and under what conditions the driver is built into the kernel, or as a module. Are there any conditional includes based on the Kconfig settings? Any special compiler flags or linker directives specific to this driver? Are there any platform-specific source files? Understanding this will be crucial to troubleshooting any build issues or customizing the driver for a particular platform or configuration. I'll be looking for any hints about the overall structure of the driver and its relationship to other crypto components. Let's see what we can find.

{
  "File": "drivers/crypto/ccp/Kconfig",
  "FirstLine": 1,
  "LineCount": 50
}

{
  "Contents": "   1:\t# SPDX-License-Identifier: GPL-2.0-only\n   2:\tconfig CRYPTO_DEV_CCP_DD\n   3:\t\ttristate \"Secure Processor device driver\"\n   4:\t\tdepends on CPU_SUP_AMD || ARM64\n   5:\t\tdefault m\n   6:\t\thelp\n   7:\t\t  Provides AMD Secure Processor device driver.\n   8:\t\t  If you choose 'M' here, this module will be called ccp.\n   9:\t\n  10:\tconfig CRYPTO_DEV_SP_CCP\n  11:\t\tbool \"Cryptographic Coprocessor device\"\n  12:\t\tdefault y\n  13:\t\tdepends on CRYPTO_DEV_CCP_DD \u0026\u0026 DMADEVICES\n  14:\t\tselect HW_RANDOM\n  15:\t\tselect DMA_ENGINE\n  16:\t\tselect CRYPTO_SHA1\n  17:\t\tselect CRYPTO_SHA256\n  18:\t\thelp\n  19:\t\t  Provides the support for AMD Cryptographic Coprocessor (CCP) device\n  20:\t\t  which can be used to offload encryption operations such as SHA, AES\n  21:\t\t  and more.\n  22:\t\n  23:\tconfig CRYPTO_DEV_CCP_CRYPTO\n  24:\t\ttristate \"Encryption and hashing offload support\"\n  25:\t\tdefault m\n  26:\t\tdepends on CRYPTO_DEV_CCP_DD\n  27:\t\tdepends on CRYPTO_DEV_SP_CCP\n  28:\t\tselect CRYPTO_HASH\n  29:\t\tselect CRYPTO_SKCIPHER\n  30:\t\tselect CRYPTO_AUTHENC\n  31:\t\tselect CRYPTO_RSA\n  32:\t\tselect CRYPTO_LIB_AES\n  33:\t\thelp\n  34:\t\t  Support for using the cryptographic API with the AMD Cryptographic\n  35:\t\t  Coprocessor. This module supports offload of SHA and AES algorithms.\n  36:\t\t  If you choose 'M' here, this module will be called ccp_crypto.\n  37:\t\n  38:\tconfig CRYPTO_DEV_SP_PSP\n  39:\t\tbool \"Platform Security Processor (PSP) device\"\n  40:\t\tdefault y\n  41:\t\tdepends on CRYPTO_DEV_CCP_DD \u0026\u0026 X86_64 \u0026\u0026 AMD_IOMMU\n  42:\t\tselect PCI_TSM if PCI\n  43:\t\thelp\n  44:\t\t Provide support for the AMD Platform Security Processor (PSP).\n  45:\t\t The PSP is a dedicated processor that provides support for key\n  46:\t\t management commands in Secure Encrypted Virtualization (SEV) mode,\n  47:\t\t along with software-based Trusted Execution Environment (TEE) to\n  48:\t\t enable third-party trusted applications.\n  49:\t\n  50:\tconfig CRYPTO_DEV_CCP_DEBUGFS\n"
}

gemini-3.8-flash

null

null

							input: 5192
							output: 37
							thoughts: 30
						

Okay, here's my take on those thoughts, tailored for an expert audience:

**Analyzing CCP Device Registration and Initialization/Destruction**

Alright, let's dive in. My immediate thought is to trace the lifecycle of devices within the CCP framework. I need to understand exactly which devices are being registered with CCP. I'm especially interested in how `ccp5_init` and `ccp5_destroy` are used in relation to these device registrations. Specifically, I need to know the calling context and sequence. Understanding the initialization and destruction calls in relation to devices is key to understanding the resources involved. I'll need to know the underlying data structures passed. Are these calls synchronous or asynchronous? What happens in error scenarios? This should give me a solid grasp on device management in the system.

{
  "Expression": "ccp5_init|ccp5_destroy",
  "PathPrefix": "drivers/crypto/ccp"
}

{
  "Output": "drivers/crypto/ccp/ccp-dev-v5.c=766=static irqreturn_t ccp5_irq_handler(int irq, void *data)\n--\ndrivers/crypto/ccp/ccp-dev-v5.c-778-\ndrivers/crypto/ccp/ccp-dev-v5.c:779:static int ccp5_init(struct ccp_device *ccp)\ndrivers/crypto/ccp/ccp-dev-v5.c-780-{\n--\ndrivers/crypto/ccp/ccp-dev-v5.c-1007-\ndrivers/crypto/ccp/ccp-dev-v5.c:1008:static void ccp5_destroy(struct ccp_device *ccp)\ndrivers/crypto/ccp/ccp-dev-v5.c-1009-{\n--\ndrivers/crypto/ccp/ccp-dev-v5.c=1102=static const struct ccp_actions ccp5_actions = {\n--\ndrivers/crypto/ccp/ccp-dev-v5.c-1111-\t.sbfree = ccp_lsb_free,\ndrivers/crypto/ccp/ccp-dev-v5.c:1112:\t.init = ccp5_init,\ndrivers/crypto/ccp/ccp-dev-v5.c:1113:\t.destroy = ccp5_destroy,\ndrivers/crypto/ccp/ccp-dev-v5.c-1114-\t.get_free_slots = ccp5_get_free_slots,\n"
}

gemini-3.8-flash

null

null

							input: 5840
							output: 32
							thoughts: 19
						

Okay, here's my summary, tailored for an expert audience, as if I'm thinking these thoughts:

**Analyzing `actions->init` and `actions->destroy` Calls**

Alright, I need to understand the lifecycle of these action handlers. Let's dig into the codebase and trace the usage of `actions->init` and `actions->destroy`. I'm going to start by looking for direct calls to these functions, rather than relying on any assumed indirect usage. I want to see precisely when and where the action system is being initialized and cleaned up. This is likely crucial for understanding potential memory leaks, resource contention, or unexpected behavior related to action management, especially in a multithreaded environment. From there, I can better assess if the current implementation strategy is adequate or if I should look for improvement.

{
  "Expression": "-\u003e(init|destroy)",
  "PathPrefix": "drivers/crypto/ccp"
}

{
  "Output": "drivers/crypto/ccp/ccp-crypto-aes-cmac.c=349=int ccp_register_aes_cmac_algs(struct list_head *head)\n--\ndrivers/crypto/ccp/ccp-crypto-aes-cmac.c-364-\talg = \u0026ccp_alg-\u003ealg;\ndrivers/crypto/ccp/ccp-crypto-aes-cmac.c:365:\talg-\u003einit = ccp_aes_cmac_init;\ndrivers/crypto/ccp/ccp-crypto-aes-cmac.c-366-\talg-\u003eupdate = ccp_aes_cmac_update;\n--\ndrivers/crypto/ccp/ccp-crypto-aes-xts.c=228=static int ccp_register_aes_xts_alg(struct list_head *head,\n--\ndrivers/crypto/ccp/ccp-crypto-aes-xts.c-260-\talg-\u003eivsize\t\t= AES_BLOCK_SIZE;\ndrivers/crypto/ccp/ccp-crypto-aes-xts.c:261:\talg-\u003einit\t\t= ccp_aes_xts_init_tfm;\ndrivers/crypto/ccp/ccp-crypto-aes-xts.c-262-\talg-\u003eexit\t\t= ccp_aes_xts_exit_tfm;\n--\ndrivers/crypto/ccp/ccp-crypto-sha.c=456=static int ccp_register_sha_alg(struct list_head *head,\n--\ndrivers/crypto/ccp/ccp-crypto-sha.c-473-\talg = \u0026ccp_alg-\u003ealg;\ndrivers/crypto/ccp/ccp-crypto-sha.c:474:\talg-\u003einit = ccp_sha_init;\ndrivers/crypto/ccp/ccp-crypto-sha.c-475-\talg-\u003eupdate = ccp_sha_update;\n--\ndrivers/crypto/ccp/ccp-dev-v3.c=148=static int ccp_perform_aes(struct ccp_op *op)\n--\ndrivers/crypto/ccp/ccp-dev-v3.c-172-\ndrivers/crypto/ccp/ccp-dev-v3.c:173:\tif (op-\u003einit)\ndrivers/crypto/ccp/ccp-dev-v3.c-174-\t\tcr[0] |= REQ1_INIT;\n--\ndrivers/crypto/ccp/ccp-dev-v3.c=179=static int ccp_perform_xts_aes(struct ccp_op *op)\n--\ndrivers/crypto/ccp/ccp-dev-v3.c-199-\ndrivers/crypto/ccp/ccp-dev-v3.c:200:\tif (op-\u003einit)\ndrivers/crypto/ccp/ccp-dev-v3.c-201-\t\tcr[0] |= REQ1_INIT;\n--\ndrivers/crypto/ccp/ccp-dev-v5.c=277=static int ccp5_perform_aes(struct ccp_op *op)\n--\ndrivers/crypto/ccp/ccp-dev-v5.c-291-\tCCP5_CMD_IOC(\u0026desc) = 1;\ndrivers/crypto/ccp/ccp-dev-v5.c:292:\tCCP5_CMD_INIT(\u0026desc) = op-\u003einit;\ndrivers/crypto/ccp/ccp-dev-v5.c-293-\tCCP5_CMD_EOM(\u0026desc) = op-\u003eeom;\n--\ndrivers/crypto/ccp/ccp-dev-v5.c=322=static int ccp5_perform_xts_aes(struct ccp_op *op)\n--\ndrivers/crypto/ccp/ccp-dev-v5.c-336-\tCCP5_CMD_IOC(\u0026desc) = 1;\ndrivers/crypto/ccp/ccp-dev-v5.c:337:\tCCP5_CMD_INIT(\u0026desc) = op-\u003einit;\ndrivers/crypto/ccp/ccp-dev-v5.c-338-\tCCP5_CMD_EOM(\u0026desc) = op-\u003eeom;\n--\ndrivers/crypto/ccp/ccp-dev-v5.c=406=static int ccp5_perform_des3(struct ccp_op *op)\n--\ndrivers/crypto/ccp/ccp-dev-v5.c-420-\tCCP5_CMD_IOC(\u0026desc) = 1;\ndrivers/crypto/ccp/ccp-dev-v5.c:421:\tCCP5_CMD_INIT(\u0026desc) = op-\u003einit;\ndrivers/crypto/ccp/ccp-dev-v5.c-422-\tCCP5_CMD_EOM(\u0026desc) = op-\u003eeom;\n--\ndrivers/crypto/ccp/ccp-dev.c=600=int ccp_dev_init(struct sp_device *sp)\n--\ndrivers/crypto/ccp/ccp-dev.c-636-\ndrivers/crypto/ccp/ccp-dev.c:637:\tret = ccp-\u003evdata-\u003eperform-\u003einit(ccp);\ndrivers/crypto/ccp/ccp-dev.c-638-\tif (ret) {\n--\ndrivers/crypto/ccp/ccp-dev.c=662=void ccp_dev_destroy(struct sp_device *sp)\n--\ndrivers/crypto/ccp/ccp-dev.c-668-\ndrivers/crypto/ccp/ccp-dev.c:669:\tccp-\u003evdata-\u003eperform-\u003edestroy(ccp);\ndrivers/crypto/ccp/ccp-dev.c-670-}\n--\ndrivers/crypto/ccp/ccp-ops.c=416=static void ccp_process_data(struct ccp_data *src, struct ccp_data *dst,\n--\ndrivers/crypto/ccp/ccp-ops.c-418-{\ndrivers/crypto/ccp/ccp-ops.c:419:\top-\u003einit = 0;\ndrivers/crypto/ccp/ccp-ops.c-420-\n"
}

gemini-3.8-flash

null

null

							input: 7617
							output: 39
							thoughts: 25
						

Here's my take on those thoughts:

**Analyzing `ccp_dev` Initialization and Destruction**

Okay, so I need to understand the lifecycle of this `ccp_dev` thing. My immediate thought is, "Where does it get born, and where does it go?" Meaning, I need to trace the calls to `ccp_dev_init` and `ccp_dev_destroy`. That will give me a critical overview of how this device or module is created, used, and ultimately cleaned up. Knowing the call sites will reveal the initialization sequence, the contexts in which the device is active, and how it's gracefully shut down. I need this to identify potential resource leaks, race conditions, or improper usage patterns. It’s the essential first step in understanding the overall behavior of this code. Time to dig in and follow those function calls.

{
  "Expression": "ccp_dev_init|ccp_dev_destroy",
  "PathPrefix": "drivers/crypto/ccp"
}

{
  "Output": "drivers/crypto/ccp/ccp-dev.c=577=void ccp_dev_resume(struct sp_device *sp)\n--\ndrivers/crypto/ccp/ccp-dev.c-599-\ndrivers/crypto/ccp/ccp-dev.c:600:int ccp_dev_init(struct sp_device *sp)\ndrivers/crypto/ccp/ccp-dev.c-601-{\n--\ndrivers/crypto/ccp/ccp-dev.c-661-\ndrivers/crypto/ccp/ccp-dev.c:662:void ccp_dev_destroy(struct sp_device *sp)\ndrivers/crypto/ccp/ccp-dev.c-663-{\n--\ndrivers/crypto/ccp/sp-dev.c=192=int sp_init(struct sp_device *sp)\n--\ndrivers/crypto/ccp/sp-dev.c-196-\tif (sp-\u003edev_vdata-\u003eccp_vdata)\ndrivers/crypto/ccp/sp-dev.c:197:\t\tccp_dev_init(sp);\ndrivers/crypto/ccp/sp-dev.c-198-\n--\ndrivers/crypto/ccp/sp-dev.c=204=void sp_destroy(struct sp_device *sp)\n--\ndrivers/crypto/ccp/sp-dev.c-206-\tif (sp-\u003edev_vdata-\u003eccp_vdata)\ndrivers/crypto/ccp/sp-dev.c:207:\t\tccp_dev_destroy(sp);\ndrivers/crypto/ccp/sp-dev.c-208-\n--\ndrivers/crypto/ccp/sp-dev.h=151=struct sp_device *sp_get_psp_master_device(void);\n--\ndrivers/crypto/ccp/sp-dev.h-154-\ndrivers/crypto/ccp/sp-dev.h:155:int ccp_dev_init(struct sp_device *sp);\ndrivers/crypto/ccp/sp-dev.h:156:void ccp_dev_destroy(struct sp_device *sp);\ndrivers/crypto/ccp/sp-dev.h-157-\n--\ndrivers/crypto/ccp/sp-dev.h=159=void ccp_dev_resume(struct sp_device *sp);\n--\ndrivers/crypto/ccp/sp-dev.h-162-\ndrivers/crypto/ccp/sp-dev.h:163:static inline int ccp_dev_init(struct sp_device *sp)\ndrivers/crypto/ccp/sp-dev.h-164-{\n--\ndrivers/crypto/ccp/sp-dev.h-166-}\ndrivers/crypto/ccp/sp-dev.h:167:static inline void ccp_dev_destroy(struct sp_device *sp) { }\ndrivers/crypto/ccp/sp-dev.h-168-static inline void ccp_dev_suspend(struct sp_device *sp) { }\n"
}

gemini-3.8-flash

null

null

							input: 8628
							output: 33
							thoughts: 36
						

Here's my analysis of the provided thought process, tailored for an expert audience:

**Analyzing `sp-dev.c` and its Device Management**

Alright, let's dive into `sp-dev.c`. I need to understand the lifecycle management here – specifically, how `sp_init` and `sp_destroy` are used. I want to trace the calls to those functions to get a solid grasp of device initialization and cleanup. Furthermore, I need to see exactly where and how `sp_device` is registered within the system. Is it as a character device, a block device, something else entirely? The registration process is key to how the kernel interacts with the hardware, so that's where I need to focus. I'll be looking for clues on how the driver claims the hardware resources and how interrupts are configured.

{
  "Expression": "sp_init|sp_destroy",
  "PathPrefix": "drivers/crypto/ccp"
}

{
  "Output": "drivers/crypto/ccp/hsti.c=80=static int psp_populate_hsti(struct psp_device *psp)\n--\ndrivers/crypto/ccp/hsti.c-114-\ndrivers/crypto/ccp/hsti.c:115:int psp_init_hsti(struct psp_device *psp)\ndrivers/crypto/ccp/hsti.c-116-{\n--\ndrivers/crypto/ccp/hsti.h=13=extern struct attribute_group psp_security_attr_group;\ndrivers/crypto/ccp/hsti.h-14-\ndrivers/crypto/ccp/hsti.h:15:int psp_init_hsti(struct psp_device *psp);\ndrivers/crypto/ccp/hsti.h-16-\n--\ndrivers/crypto/ccp/psp-dev.c=186=static int psp_check_sfs_support(struct psp_device *psp)\n--\ndrivers/crypto/ccp/psp-dev.c-196-\ndrivers/crypto/ccp/psp-dev.c:197:static int psp_init(struct psp_device *psp)\ndrivers/crypto/ccp/psp-dev.c-198-{\n--\ndrivers/crypto/ccp/psp-dev.c-233-\t/* HSTI uses platform access on some systems. */\ndrivers/crypto/ccp/psp-dev.c:234:\tret = psp_init_hsti(psp);\ndrivers/crypto/ccp/psp-dev.c-235-\tif (ret)\n--\ndrivers/crypto/ccp/psp-dev.c=241=int psp_dev_init(struct sp_device *sp)\n--\ndrivers/crypto/ccp/psp-dev.c-282-\ndrivers/crypto/ccp/psp-dev.c:283:\tret = psp_init(psp);\ndrivers/crypto/ccp/psp-dev.c-284-\tif (ret)\n--\ndrivers/crypto/ccp/sev-dev.c=72=MODULE_PARM_DESC(init_ex_path, \" Path for INIT_EX data; if set try INIT_EX\");\ndrivers/crypto/ccp/sev-dev.c-73-\ndrivers/crypto/ccp/sev-dev.c:74:static bool psp_init_on_probe = true;\ndrivers/crypto/ccp/sev-dev.c:75:module_param(psp_init_on_probe, bool, 0444);\ndrivers/crypto/ccp/sev-dev.c:76:MODULE_PARM_DESC(psp_init_on_probe, \"  if true, the PSP will be initialized on module init. Else the PSP will be initialized on the first command requiring it\");\ndrivers/crypto/ccp/sev-dev.c-77-\n--\ndrivers/crypto/ccp/sev-dev.c=1508=static int __sev_snp_init_locked(int *error, unsigned int max_snp_asid)\n--\ndrivers/crypto/ccp/sev-dev.c-1589-\t\t/*\ndrivers/crypto/ccp/sev-dev.c:1590:\t\t * When psp_init_on_probe is disabled, the userspace calling\ndrivers/crypto/ccp/sev-dev.c-1591-\t\t * SEV ioctl can inadvertently shut down SNP and SEV-TIO causing\n--\ndrivers/crypto/ccp/sev-dev.c-1593-\t\t */\ndrivers/crypto/ccp/sev-dev.c:1594:\t\tif (data.tio_en \u0026\u0026 !psp_init_on_probe)\ndrivers/crypto/ccp/sev-dev.c:1595:\t\t\tdev_warn(sev-\u003edev, \"SEV-TIO as incompatible with psp_init_on_probe=0\\n\");\ndrivers/crypto/ccp/sev-dev.c-1596-\n--\ndrivers/crypto/ccp/sev-dev.c=1801=static int _sev_platform_init_locked(struct sev_platform_init_args *args)\n--\ndrivers/crypto/ccp/sev-dev.c-1827-\t/* Defer legacy SEV/SEV-ES support if allowed by caller/module. */\ndrivers/crypto/ccp/sev-dev.c:1828:\tif (args-\u003eprobe \u0026\u0026 !psp_init_on_probe)\ndrivers/crypto/ccp/sev-dev.c-1829-\t\treturn 0;\n--\ndrivers/crypto/ccp/sp-dev.c=177=struct sp_device *sp_alloc_struct(struct device *dev)\n--\ndrivers/crypto/ccp/sp-dev.c-191-\ndrivers/crypto/ccp/sp-dev.c:192:int sp_init(struct sp_device *sp)\ndrivers/crypto/ccp/sp-dev.c-193-{\n--\ndrivers/crypto/ccp/sp-dev.c-203-\ndrivers/crypto/ccp/sp-dev.c:204:void sp_destroy(struct sp_device *sp)\ndrivers/crypto/ccp/sp-dev.c-205-{\n--\ndrivers/crypto/ccp/sp-dev.h=137=struct sp_device *sp_alloc_struct(struct device *dev);\ndrivers/crypto/ccp/sp-dev.h-138-\ndrivers/crypto/ccp/sp-dev.h:139:int sp_init(struct sp_device *sp);\ndrivers/crypto/ccp/sp-dev.h:140:void sp_destroy(struct sp_device *sp);\ndrivers/crypto/ccp/sp-dev.h-141-\n--\ndrivers/crypto/ccp/sp-pci.c=231=static int sp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)\n--\ndrivers/crypto/ccp/sp-pci.c-304-\ndrivers/crypto/ccp/sp-pci.c:305:\tret = sp_init(sp);\ndrivers/crypto/ccp/sp-pci.c-306-\tif (ret)\n--\ndrivers/crypto/ccp/sp-pci.c=318=static void sp_pci_shutdown(struct pci_dev *pdev)\n--\ndrivers/crypto/ccp/sp-pci.c-325-\ndrivers/crypto/ccp/sp-pci.c:326:\tsp_destroy(sp);\ndrivers/crypto/ccp/sp-pci.c-327-}\n--\ndrivers/crypto/ccp/sp-pci.c=329=static void sp_pci_remove(struct pci_dev *pdev)\n--\ndrivers/crypto/ccp/sp-pci.c-336-\ndrivers/crypto/ccp/sp-pci.c:337:\tsp_destroy(sp);\ndrivers/crypto/ccp/sp-pci.c-338-\n--\ndrivers/crypto/ccp/sp-platform.c=97=static int sp_platform_probe(struct platform_device *pdev)\n--\ndrivers/crypto/ccp/sp-platform.c-152-\ndrivers/crypto/ccp/sp-platform.c:153:\tret = sp_init(sp);\ndrivers/crypto/ccp/sp-platform.c-154-\tif (ret)\n--\ndrivers/crypto/ccp/sp-platform.c=166=static void sp_platform_remove(struct platform_device *pdev)\n--\ndrivers/crypto/ccp/sp-platform.c-170-\ndrivers/crypto/ccp/sp-platform.c:171:\tsp_destroy(sp);\ndrivers/crypto/ccp/sp-platform.c-172-\n"
}

gemini-3.8-flash

null

null

							input: 10851
							output: 40
							thoughts: 49
						

**Examining the Device Driver Support**

Alright, let's dive in. My immediate focus is understanding the hardware the driver supports. I need to get a handle on what PCI and platform devices this driver, specifically, `sp-pci.c` and `sp-platform.c`, are designed to handle. I need to quickly identify the specific devices in those two files. The supported devices dictate everything from feature set to the kind of debugging I might need to consider later. Let's start by methodically reviewing those two source files. That should give me the base information I need.

{
  "File": "drivers/crypto/ccp/sp-pci.c",
  "FirstLine": 35,
  "LineCount": 80
}

{
  "Contents": "  35:\t#define MSIX_VECTORS\t\t\t2\n  36:\t\n  37:\tstruct sp_pci {\n  38:\t\tint msix_count;\n  39:\t\tstruct msix_entry msix_entry[MSIX_VECTORS];\n  40:\t};\n  41:\tstatic struct sp_device *sp_dev_master;\n  42:\t\n  43:\t#define version_attribute_show(name, _offset)\t\t\t\t\t\\\n  44:\tstatic ssize_t name##_show(struct device *d, struct device_attribute *attr,\t\\\n  45:\t\t\t\t   char *buf)\t\t\t\t\t\t\\\n  46:\t{\t\t\t\t\t\t\t\t\t\t\\\n  47:\t\tstruct sp_device *sp = dev_get_drvdata(d);\t\t\t\t\\\n  48:\t\tstruct psp_device *psp = sp-\u003epsp_data;\t\t\t\t\t\\\n  49:\t\tunsigned int val = ioread32(psp-\u003eio_regs + _offset);\t\t\t\\\n  50:\t\treturn sysfs_emit(buf, \"%02lx.%02lx.%02lx.%02lx\\n\",\t\t\t\\\n  51:\t\t\t\t  FIELD_GET(AA, val),\t\t\t\\\n  52:\t\t\t\t  FIELD_GET(BB, val),\t\t\t\\\n  53:\t\t\t\t  FIELD_GET(CC, val),\t\t\t\\\n  54:\t\t\t\t  FIELD_GET(DD, val));\t\t\t\\\n  55:\t}\n  56:\t\n  57:\tversion_attribute_show(bootloader_version, psp-\u003evdata-\u003ebootloader_info_reg)\n  58:\tstatic DEVICE_ATTR_RO(bootloader_version);\n  59:\tversion_attribute_show(tee_version, psp-\u003evdata-\u003etee-\u003einfo_reg)\n  60:\tstatic DEVICE_ATTR_RO(tee_version);\n  61:\t\n  62:\tstatic struct attribute *psp_firmware_attrs[] = {\n  63:\t\t\u0026dev_attr_bootloader_version.attr,\n  64:\t\t\u0026dev_attr_tee_version.attr,\n  65:\t\tNULL,\n  66:\t};\n  67:\t\n  68:\tstatic umode_t psp_firmware_is_visible(struct kobject *kobj, struct attribute *attr, int idx)\n  69:\t{\n  70:\t\tstruct device *dev = kobj_to_dev(kobj);\n  71:\t\tstruct sp_device *sp = dev_get_drvdata(dev);\n  72:\t\tstruct psp_device *psp = sp-\u003epsp_data;\n  73:\t\tunsigned int val = 0xffffffff;\n  74:\t\n  75:\t\tif (!psp)\n  76:\t\t\treturn 0;\n  77:\t\n  78:\t\tif (attr == \u0026dev_attr_bootloader_version.attr \u0026\u0026\n  79:\t\t    psp-\u003evdata-\u003ebootloader_info_reg)\n  80:\t\t\tval = ioread32(psp-\u003eio_regs + psp-\u003evdata-\u003ebootloader_info_reg);\n  81:\t\n  82:\t\tif (attr == \u0026dev_attr_tee_version.attr \u0026\u0026 psp-\u003ecapability.tee \u0026\u0026\n  83:\t\t    psp-\u003evdata-\u003etee-\u003einfo_reg)\n  84:\t\t\tval = ioread32(psp-\u003eio_regs + psp-\u003evdata-\u003etee-\u003einfo_reg);\n  85:\t\n  86:\t\t/* If platform disallows accessing this register it will be all f's */\n  87:\t\tif (val != 0xffffffff)\n  88:\t\t\treturn 0444;\n  89:\t\n  90:\t\treturn 0;\n  91:\t}\n  92:\t\n  93:\tstatic struct attribute_group psp_firmware_attr_group = {\n  94:\t\t.attrs = psp_firmware_attrs,\n  95:\t\t.is_visible = psp_firmware_is_visible,\n  96:\t};\n  97:\t\n  98:\tstatic const struct attribute_group *psp_groups[] = {\n  99:\t#ifdef CONFIG_CRYPTO_DEV_SP_PSP\n 100:\t\t\u0026psp_security_attr_group,\n 101:\t#endif\n 102:\t\t\u0026psp_firmware_attr_group,\n 103:\t\tNULL,\n 104:\t};\n 105:\t\n 106:\tstatic int sp_get_msix_irqs(struct sp_device *sp)\n 107:\t{\n 108:\t\tstruct sp_pci *sp_pci = sp-\u003edev_specific;\n 109:\t\tstruct device *dev = sp-\u003edev;\n 110:\t\tstruct pci_dev *pdev = to_pci_dev(dev);\n 111:\t\tint v, ret;\n 112:\t\n 113:\t\tfor (v = 0; v \u003c ARRAY_SIZE(sp_pci-\u003emsix_entry); v++)\n 114:\t\t\tsp_pci-\u003emsix_entry[v].entry = v;\n"
}

gemini-3.8-flash

null

null

							input: 12354
							output: 31
							thoughts: 29
						

Here's my take on the thought process, tailored for an expert audience:

**Examining PCI Device IDs in the SP Driver**

Alright, let's dive in. I need to understand how the driver, specifically the `sp-pci.c` and `sp-platform.c` files, handles device identification. My immediate focus is on how it's associating specific PCI devices with the driver. I know this is often accomplished through a table of PCI device IDs, so I'm heading straight for the relevant code sections to scrutinize that table. I'm looking for the canonical `pci_device_id` structures or their platform-specific equivalents. I'll be analyzing the vendor and device IDs, class codes, and any other relevant fields used for device matching and binding. This'll help me understand the driver's supported hardware. I'm keen to see if they're using anything beyond the standard PCI ID matching, like maybe quirks or other platform-specific identifiers. I'll be paying close attention to any wildcard entries or catch-all IDs, which may suggest more generic support.

{
  "Expression": "MODULE_DEVICE_TABLE",
  "PathPrefix": "drivers/crypto/ccp"
}

{
  "Output": "drivers/crypto/ccp/sp-pci.c=554=static const struct pci_device_id sp_pci_table[] = {\n--\ndrivers/crypto/ccp/sp-pci.c-570-};\ndrivers/crypto/ccp/sp-pci.c:571:MODULE_DEVICE_TABLE(pci, sp_pci_table);\ndrivers/crypto/ccp/sp-pci.c-572-\n--\ndrivers/crypto/ccp/sp-platform.c=42=static const struct acpi_device_id sp_acpi_match[] = {\n--\ndrivers/crypto/ccp/sp-platform.c-45-};\ndrivers/crypto/ccp/sp-platform.c:46:MODULE_DEVICE_TABLE(acpi, sp_acpi_match);\ndrivers/crypto/ccp/sp-platform.c-47-\ndrivers/crypto/ccp/sp-platform.c=48=static const struct of_device_id sp_of_match[] = {\n--\ndrivers/crypto/ccp/sp-platform.c-52-};\ndrivers/crypto/ccp/sp-platform.c:53:MODULE_DEVICE_TABLE(of, sp_of_match);\ndrivers/crypto/ccp/sp-platform.c-54-\n"
}

gemini-3.8-flash

null

null

							input: 12980
							output: 41
							thoughts: 31
						

Okay, here's my interpretation of those thoughts, tailored for an expert audience, presented in the first person:

**Device Discovery Deep Dive**

Alright, let's get down to it. I'm thinking, "Okay, we're in the device enumeration phase, so let's start dissecting how the system identifies its hardware." My focus right now is on the core mechanisms. I need to get a clear picture of how the kernel correlates hardware descriptions to drivers.

My immediate interest is in those primary data structures. I'm thinking, "Let's first take a look at what the `sp_pci_table` is holding. What PCI devices are we recognizing? Are we using any of the standard IDs, and if so, how are those devices being initialized?" I'm mentally parsing the code: What's the structure of that table? What fields are most relevant to driver binding? I need to analyze those entries for vendor and device IDs, class codes, and any other identifying information.

Next, I'll shift gears. I'm now thinking, "Okay, PCI covered. Now, let's move onto ACPI. How are we doing things with `sp_acpi_match`?" My mind immediately jumps to the ACPI namespace. What ACPI methods are we evaluating to determine device presence and properties? How are we matching against ACPI device IDs and hardware IDs? I'm curious about the ACPI namespace traversal logic and how those results are cross-referenced.

Finally, I'm thinking, "And how are we handling the device tree with `sp_of_match`? What's going on with the device tree matching?" I'm anticipating looking at the device tree bindings. How are properties like "compatible" strings being used? What's the overall structure of the matching functions, the logic behind the device tree probing process?

In essence, I'm trying to mentally map out all of the different data structures and matching strategies involved in device identification. Understanding the interactions between these three approaches – PCI, ACPI, and Device Tree – is crucial for troubleshooting and optimization.

{
  "File": "drivers/crypto/ccp/sp-pci.c",
  "FirstLine": 550,
  "LineCount": 25
}

{
  "Contents": " 550:\t#endif\n 551:\t\t},\n 552:\t\n 553:\t};\n 554:\tstatic const struct pci_device_id sp_pci_table[] = {\n 555:\t\t{ PCI_VDEVICE(AMD, 0x1537), .driver_data = (kernel_ulong_t)\u0026dev_vdata[0] },\n 556:\t\t{ PCI_VDEVICE(AMD, 0x1456), .driver_data = (kernel_ulong_t)\u0026dev_vdata[1] },\n 557:\t\t{ PCI_VDEVICE(AMD, 0x1468), .driver_data = (kernel_ulong_t)\u0026dev_vdata[2] },\n 558:\t\t{ PCI_VDEVICE(AMD, 0x1486), .driver_data = (kernel_ulong_t)\u0026dev_vdata[3] },\n 559:\t\t{ PCI_VDEVICE(AMD, 0x15DF), .driver_data = (kernel_ulong_t)\u0026dev_vdata[4] },\n 560:\t\t{ PCI_VDEVICE(AMD, 0x14CA), .driver_data = (kernel_ulong_t)\u0026dev_vdata[5] },\n 561:\t\t{ PCI_VDEVICE(AMD, 0x15C7), .driver_data = (kernel_ulong_t)\u0026dev_vdata[6] },\n 562:\t\t{ PCI_VDEVICE(AMD, 0x1649), .driver_data = (kernel_ulong_t)\u0026dev_vdata[6] },\n 563:\t\t{ PCI_VDEVICE(AMD, 0x1134), .driver_data = (kernel_ulong_t)\u0026dev_vdata[7] },\n 564:\t\t{ PCI_VDEVICE(AMD, 0x17E0), .driver_data = (kernel_ulong_t)\u0026dev_vdata[7] },\n 565:\t\t{ PCI_VDEVICE(AMD, 0x156E), .driver_data = (kernel_ulong_t)\u0026dev_vdata[8] },\n 566:\t\t{ PCI_VDEVICE(AMD, 0x17D8), .driver_data = (kernel_ulong_t)\u0026dev_vdata[8] },\n 567:\t\t{ PCI_VDEVICE(AMD, 0x115A), .driver_data = (kernel_ulong_t)\u0026dev_vdata[9] },\n 568:\t\t/* Last entry must be zero */\n 569:\t\t{ }\n 570:\t};\n 571:\tMODULE_DEVICE_TABLE(pci, sp_pci_table);\n 572:\t\n 573:\tstatic const struct dev_pm_ops sp_pci_pm_ops = {\n 574:\t\t.suspend = pm_sleep_ptr(sp_pci_suspend),\n"
}

gemini-3.8-flash

null

null

							input: 14234
							output: 39
							thoughts: 9
						

Okay, here's my attempt at summarizing the thought process, tailored for an expert audience, and written in the first person:

**Deep Dive into `sp-platform.c`**

Alright, I'm digging into `sp-platform.c`. This is where the rubber meets the road, isn't it? I'm expecting to see the low-level platform-specific interactions – the hardware abstraction layer, essentially. The initial scan is looking for the usual suspects: initialization routines, interrupt handling, clock configuration, memory mapping, and perhaps DMA setup, depending on the architecture. I'm already mentally cross-referencing this with the system documentation.

My immediate focus will be on understanding how the system is bootstrapped. What's the entry point? How does it configure the crucial hardware components necessary for the core functionality? Are there any platform-specific quirks or workarounds in this file that I need to be aware of? I'll be looking for any signs of direct register access and what they're mapping to (I know the architecture well, so I'll be ready to map these addresses to the data sheets).

Interrupt handling is always a key area to scrutinize. I'm keen to see if they're using a standard interrupt controller, or if there's a more custom approach. The interrupt vector table setup is crucial, and any platform-specific ISRs will need close examination. I'll be comparing this with the interrupt controller's documentation to ensure there aren't any potential race conditions or synchronization issues, especially if there's any shared memory involved between the CPU and other hardware accelerators.

Clock configuration is another area I'll be paying close attention to. Are they using a PLL? What are the clock frequencies for the CPU, peripherals, and any specialized hardware? Any clock dividers? Any power management concerns? I'll be looking for how they are handling clock gating, or dynamic voltage frequency scaling.

Memory mapping is vital too. How is the physical address space mapped to the virtual address space? Are there any memory-mapped peripherals? Does it use MMU? I need to understand how they are handling cache coherency, especially if there is DMA.

If I find any custom device drivers implemented here, I'll need to go deeper into the initialization and interaction mechanisms. I'm mentally anticipating potential issues with resource allocation, synchronization (mutexes, semaphores, etc.), and error handling. I'll also be considering how these platform-specific functions interface with the more generic services or kernel subsystems – is there a clean abstraction layer, or is it messy?

{
  "File": "drivers/crypto/ccp/sp-platform.c",
  "FirstLine": 40,
  "LineCount": 25
}

{
  "Contents": "  40:\t};\n  41:\t\n  42:\tstatic const struct acpi_device_id sp_acpi_match[] = {\n  43:\t\t{ \"AMDI0C00\", (kernel_ulong_t)\u0026dev_vdata[0] },\n  44:\t\t{ },\n  45:\t};\n  46:\tMODULE_DEVICE_TABLE(acpi, sp_acpi_match);\n  47:\t\n  48:\tstatic const struct of_device_id sp_of_match[] = {\n  49:\t\t{ .compatible = \"amd,ccp-seattle-v1a\",\n  50:\t\t  .data = (const void *)\u0026dev_vdata[0] },\n  51:\t\t{ },\n  52:\t};\n  53:\tMODULE_DEVICE_TABLE(of, sp_of_match);\n  54:\t\n  55:\tstatic const struct sp_dev_vdata *sp_get_acpi_version(struct platform_device *pdev)\n  56:\t{\n  57:\t\tconst struct acpi_device_id *match;\n  58:\t\n  59:\t\tmatch = acpi_match_device(sp_acpi_match, \u0026pdev-\u003edev);\n  60:\t\tif (match \u0026\u0026 match-\u003edriver_data)\n  61:\t\t\treturn (const struct sp_dev_vdata *)match-\u003edriver_data;\n  62:\t\n  63:\t\treturn NULL;\n  64:\t}\n"
}

gemini-3.8-flash

null

null

							input: 15205
							output: 44
							thoughts: 219
						

**Analyzing the AMD Secure Processor Code**

Okay, let's break this down. First, I see a reference to `sp-platform`, which immediately flags AMD's Seattle (ARM64) or ACPI "AMDI0C00" platforms. The use of `dev_vdata[0]` and its connection to `ccp v3: ccp_v3` is important. And I see a modified file, `ccp-dev-v5.c`, which is the key here. It seems related to a later version.

Then, there's `sp-pci.c`, which specifically binds to various AMD PCI devices. These are the expected AMD Secure Processor or CCP hardware components found on their Zen, EPYC, and Ryzen processors. I see the device IDs: `PCI_VDEVICE(AMD, 0x1537)`, `PCI_VDEVICE(AMD, 0x1456)`, and `0x1468`, which all ring a bell.

Now, I need to pinpoint the initialization and destruction functions. I should check the code changes and the locations of `ccp5_init` and `ccp5_destroy`. I should look at `drivers/crypto/ccp/ccp-dev-v5.c` to understand the low-level details of how this hardware is managed, especially between lines 980-1060. That should give me the core logic.

{
  "File": "drivers/crypto/ccp/ccp-dev-v5.c",
  "FirstLine": 980,
  "LineCount": 80
}

{
  "Contents": " 980:\t\n 981:\t#ifdef CONFIG_CRYPTO_DEV_CCP_DEBUGFS\n 982:\t\t/* Set up debugfs entries */\n 983:\t\tccp5_debugfs_setup(ccp);\n 984:\t#endif\n 985:\t\n 986:\t\treturn 0;\n 987:\t\n 988:\te_hwrng:\n 989:\t\tccp_unregister_rng(ccp);\n 990:\t\n 991:\te_kthread:\n 992:\t\tfor (i = 0; i \u003c ccp-\u003ecmd_q_count; i++)\n 993:\t\t\tif (ccp-\u003ecmd_q[i].kthread)\n 994:\t\t\t\tkthread_stop(ccp-\u003ecmd_q[i].kthread);\n 995:\t\n 996:\te_irq:\n 997:\t\tsp_free_ccp_irq(ccp-\u003esp, ccp);\n 998:\t\tif (ccp-\u003euse_tasklet)\n 999:\t\t\ttasklet_kill(\u0026ccp-\u003eirq_tasklet);\n1000:\t\n1001:\te_pool:\n1002:\t\tfor (i = 0; i \u003c ccp-\u003ecmd_q_count; i++)\n1003:\t\t\tdma_pool_destroy(ccp-\u003ecmd_q[i].dma_pool);\n1004:\t\n1005:\t\treturn ret;\n1006:\t}\n1007:\t\n1008:\tstatic void ccp5_destroy(struct ccp_device *ccp)\n1009:\t{\n1010:\t\tstruct ccp_cmd_queue *cmd_q;\n1011:\t\tstruct ccp_cmd *cmd;\n1012:\t\tunsigned int i;\n1013:\t\n1014:\t\t/* Unregister the DMA engine */\n1015:\t\tccp_dmaengine_unregister(ccp);\n1016:\t\n1017:\t\t/* Unregister the RNG */\n1018:\t\tccp_unregister_rng(ccp);\n1019:\t\n1020:\t\t/* Remove this device from the list of available units first */\n1021:\t\tccp_del_device(ccp);\n1022:\t\n1023:\t#ifdef CONFIG_CRYPTO_DEV_CCP_DEBUGFS\n1024:\t\t/* We're in the process of tearing down the entire driver;\n1025:\t\t * when all the devices are gone clean up debugfs\n1026:\t\t */\n1027:\t\tif (ccp_present())\n1028:\t\t\tccp5_debugfs_destroy();\n1029:\t#endif\n1030:\t\n1031:\t\t/* Disable and clear interrupts */\n1032:\t\tccp5_disable_queue_interrupts(ccp);\n1033:\t\tfor (i = 0; i \u003c ccp-\u003ecmd_q_count; i++) {\n1034:\t\t\tcmd_q = \u0026ccp-\u003ecmd_q[i];\n1035:\t\n1036:\t\t\t/* Turn off the run bit */\n1037:\t\t\tiowrite32(cmd_q-\u003eqcontrol \u0026 ~CMD5_Q_RUN, cmd_q-\u003ereg_control);\n1038:\t\n1039:\t\t\t/* Clear the interrupt status */\n1040:\t\t\tiowrite32(SUPPORTED_INTERRUPTS, cmd_q-\u003ereg_interrupt_status);\n1041:\t\t\tioread32(cmd_q-\u003ereg_int_status);\n1042:\t\t\tioread32(cmd_q-\u003ereg_status);\n1043:\t\t}\n1044:\t\n1045:\t\t/* Stop the queue kthreads */\n1046:\t\tfor (i = 0; i \u003c ccp-\u003ecmd_q_count; i++)\n1047:\t\t\tif (ccp-\u003ecmd_q[i].kthread)\n1048:\t\t\t\tkthread_stop(ccp-\u003ecmd_q[i].kthread);\n1049:\t\n1050:\t\tsp_free_ccp_irq(ccp-\u003esp, ccp);\n1051:\t\tif (ccp-\u003euse_tasklet)\n1052:\t\t\ttasklet_kill(\u0026ccp-\u003eirq_tasklet);\n1053:\t\n1054:\t\t/* Flush the cmd and backlog queue */\n1055:\t\twhile (!list_empty(\u0026ccp-\u003ecmd)) {\n1056:\t\t\t/* Invoke the callback directly with an error code */\n1057:\t\t\tcmd = list_first_entry(\u0026ccp-\u003ecmd, struct ccp_cmd, entry);\n1058:\t\t\tlist_del(\u0026cmd-\u003eentry);\n1059:\t\t\tcmd-\u003ecallback(cmd-\u003edata, -ENODEV);\n"
}

gemini-3.8-flash

null

null

							input: 17035
							output: 31
							thoughts: 34
						

Okay, here's my interpretation of that thought process, assuming I'm deep in the weeds of kernel development and specifically working with the CCP5 driver:

**Investigating CCP5 Tasklet Initialization**

Alright, time to dive in and understand exactly what's happening during the initialization of the CCP5 driver, specifically how `ccp5_init` handles the interrupt tasklet – `ccp->irq_tasklet` and the related flag, `ccp->use_tasklet`. I need to figure out how these elements work in tandem. Are we using a tasklet for interrupt handling? If so, how is it set up, enabled, and potentially disabled? Are there specific conditions that determine *whether* the tasklet approach is utilized? I need to clarify the interaction between the interrupt handler and the tasklet to fully grasp the interrupt processing flow in this driver. Understanding the logic around `ccp->use_tasklet` is key to grasping the design choices. This analysis should pinpoint how events are handled within the CCP5 context.

{
  "Expression": "irq_tasklet",
  "PathPrefix": "drivers/crypto/ccp"
}

{
  "Output": "drivers/crypto/ccp/ccp-dev-v3.c=356=static irqreturn_t ccp_irq_handler(int irq, void *data)\n--\ndrivers/crypto/ccp/ccp-dev-v3.c-361-\tif (ccp-\u003euse_tasklet)\ndrivers/crypto/ccp/ccp-dev-v3.c:362:\t\ttasklet_schedule(\u0026ccp-\u003eirq_tasklet);\ndrivers/crypto/ccp/ccp-dev-v3.c-363-\telse\n--\ndrivers/crypto/ccp/ccp-dev-v3.c=369=static int ccp_init(struct ccp_device *ccp)\n--\ndrivers/crypto/ccp/ccp-dev-v3.c-459-\tif (ccp-\u003euse_tasklet)\ndrivers/crypto/ccp/ccp-dev-v3.c:460:\t\ttasklet_init(\u0026ccp-\u003eirq_tasklet, ccp_irq_bh,\ndrivers/crypto/ccp/ccp-dev-v3.c-461-\t\t\t     (unsigned long)ccp);\n--\ndrivers/crypto/ccp/ccp-dev-v5.c=766=static irqreturn_t ccp5_irq_handler(int irq, void *data)\n--\ndrivers/crypto/ccp/ccp-dev-v5.c-772-\tif (ccp-\u003euse_tasklet)\ndrivers/crypto/ccp/ccp-dev-v5.c:773:\t\ttasklet_schedule(\u0026ccp-\u003eirq_tasklet);\ndrivers/crypto/ccp/ccp-dev-v5.c-774-\telse\n--\ndrivers/crypto/ccp/ccp-dev-v5.c=779=static int ccp5_init(struct ccp_device *ccp)\n--\ndrivers/crypto/ccp/ccp-dev-v5.c-896-\tif (ccp-\u003euse_tasklet)\ndrivers/crypto/ccp/ccp-dev-v5.c:897:\t\ttasklet_init(\u0026ccp-\u003eirq_tasklet, ccp5_irq_bh,\ndrivers/crypto/ccp/ccp-dev-v5.c-898-\t\t\t     (unsigned long)ccp);\n--\ndrivers/crypto/ccp/ccp-dev-v5.c-998-\tif (ccp-\u003euse_tasklet)\ndrivers/crypto/ccp/ccp-dev-v5.c:999:\t\ttasklet_kill(\u0026ccp-\u003eirq_tasklet);\ndrivers/crypto/ccp/ccp-dev-v5.c-1000-\n--\ndrivers/crypto/ccp/ccp-dev-v5.c=1008=static void ccp5_destroy(struct ccp_device *ccp)\n--\ndrivers/crypto/ccp/ccp-dev-v5.c-1051-\tif (ccp-\u003euse_tasklet)\ndrivers/crypto/ccp/ccp-dev-v5.c:1052:\t\ttasklet_kill(\u0026ccp-\u003eirq_tasklet);\ndrivers/crypto/ccp/ccp-dev-v5.c-1053-\n--\ndrivers/crypto/ccp/ccp-dev.h=339=struct ccp_device {\n--\ndrivers/crypto/ccp/ccp-dev.h-355-\tbool use_tasklet;\ndrivers/crypto/ccp/ccp-dev.h:356:\tstruct tasklet_struct irq_tasklet;\ndrivers/crypto/ccp/ccp-dev.h-357-\n"
}

gemini-3.8-flash

null

null

							input: 18256
							output: 30
							thoughts: 34
						

Okay, here's my take on those thoughts, framed as an expert's internal monologue:

**Investigating `ccp-dev-v3.c` and Tasklet Termination**

Alright, let's take a look at `ccp-dev-v3.c`. I need to zero in on how this module handles tasklets, specifically how it deals with `tasklet_kill`. That's where the potential gotchas usually are. A quick scan around that call to `tasklet_kill` should reveal any obvious concurrency issues, improper use of the API, or potential race conditions related to tasklet scheduling and execution. Time to dig in and see if the implementation is as robust as it should be. Let's see what's happening just before, during and just after that particular call.

{
  "Expression": "tasklet_kill",
  "PathPrefix": "drivers/crypto/ccp"
}

{
  "Output": "drivers/crypto/ccp/ccp-dev-v5.c=779=static int ccp5_init(struct ccp_device *ccp)\n--\ndrivers/crypto/ccp/ccp-dev-v5.c-998-\tif (ccp-\u003euse_tasklet)\ndrivers/crypto/ccp/ccp-dev-v5.c:999:\t\ttasklet_kill(\u0026ccp-\u003eirq_tasklet);\ndrivers/crypto/ccp/ccp-dev-v5.c-1000-\n--\ndrivers/crypto/ccp/ccp-dev-v5.c=1008=static void ccp5_destroy(struct ccp_device *ccp)\n--\ndrivers/crypto/ccp/ccp-dev-v5.c-1051-\tif (ccp-\u003euse_tasklet)\ndrivers/crypto/ccp/ccp-dev-v5.c:1052:\t\ttasklet_kill(\u0026ccp-\u003eirq_tasklet);\ndrivers/crypto/ccp/ccp-dev-v5.c-1053-\n--\ndrivers/crypto/ccp/ccp-dmaengine.c=635=static void ccp_dma_release(struct ccp_device *ccp)\n--\ndrivers/crypto/ccp/ccp-dmaengine.c-644-\ndrivers/crypto/ccp/ccp-dmaengine.c:645:\t\ttasklet_kill(\u0026chan-\u003ecleanup_tasklet);\ndrivers/crypto/ccp/ccp-dmaengine.c-646-\t\tlist_del_rcu(\u0026dma_chan-\u003edevice_node);\n"
}

gemini-3.8-flash

null

null

							input: 18913
							output: 27
							thoughts: 731
						

**Analyzing the WorthFuzzing Criteria for the AMD CCP Driver**

Okay, let's break this down systematically. We're looking at Section 2, the "negative criteria" for determining when we *don't* want to fuzz a code path. That boils down to non-kernel/non-executable changes, structurally unreachable hardware, and unreachable execution paths. Now, this patch's changes seem like they might fall into one of those categories, so let's dig deeper.

Specifically, I'm focusing on the AMD CCP (ccp-dev-v5). Is it structurally unreachable? It's the AMD Cryptographic Coprocessor, and it requires physical AMD CPUs or SoCs. The question is: does QEMU, our standard virtualization environment, emulate this PCI device? No, it doesn't. No emulation for the AMD Secure Processor or CCP. Even within KVM, in a standard VM like the ones we use for syzkaller on GCE or QEMU, the CCP isn't available.

But wait, even if it *were* available (which, to be clear, it isn't), what's actually *changing* in the patch? Let's look at the functions and lines touched: `ccp5_init` and `ccp5_destroy`. The `ccp5_init` change is specifically in the error path `e_irq:`, where it adds `tasklet_kill(&ccp->irq_tasklet)`. This is error handling during the *initialization* of the CCP v5 hardware, which, again, requires real hardware. The change in `ccp5_destroy` also adds `tasklet_kill(&ccp->irq_tasklet)`.

How is `ccp5_destroy` called? It's called from `sp_pci_remove`, `sp_pci_shutdown` and `sp_platform_remove`. And both `sp_pci_remove` and `sp_pci_shutdown` are driver teardown callbacks (.remove, .shutdown)! We are *killing* the tasklet during CCP tear-down.

This means the patch touches error handling during probe/init (requires real hardware), or driver unbinding!

Okay, let's now confirm there's no sleight-of-hand. We're not dealing with some virtual, simulated, or mock device masquerading as CCP. Let's do a quick search within the kernel. I will search for any other users or callers of `ccp5_init` or `ccp_dev_init`. This should solidify the conclusion that this is a case where `WorthFuzzing=false`.

{
  "Expression": "ccp_dev_init",
  "PathPrefix": "drivers"
}

{
  "Output": "drivers/crypto/ccp/ccp-dev.c=577=void ccp_dev_resume(struct sp_device *sp)\n--\ndrivers/crypto/ccp/ccp-dev.c-599-\ndrivers/crypto/ccp/ccp-dev.c:600:int ccp_dev_init(struct sp_device *sp)\ndrivers/crypto/ccp/ccp-dev.c-601-{\n--\ndrivers/crypto/ccp/sp-dev.c=192=int sp_init(struct sp_device *sp)\n--\ndrivers/crypto/ccp/sp-dev.c-196-\tif (sp-\u003edev_vdata-\u003eccp_vdata)\ndrivers/crypto/ccp/sp-dev.c:197:\t\tccp_dev_init(sp);\ndrivers/crypto/ccp/sp-dev.c-198-\n--\ndrivers/crypto/ccp/sp-dev.h=151=struct sp_device *sp_get_psp_master_device(void);\n--\ndrivers/crypto/ccp/sp-dev.h-154-\ndrivers/crypto/ccp/sp-dev.h:155:int ccp_dev_init(struct sp_device *sp);\ndrivers/crypto/ccp/sp-dev.h-156-void ccp_dev_destroy(struct sp_device *sp);\n--\ndrivers/crypto/ccp/sp-dev.h=159=void ccp_dev_resume(struct sp_device *sp);\n--\ndrivers/crypto/ccp/sp-dev.h-162-\ndrivers/crypto/ccp/sp-dev.h:163:static inline int ccp_dev_init(struct sp_device *sp)\ndrivers/crypto/ccp/sp-dev.h-164-{\n"
}

gemini-3.8-flash

null

null

							input: 20708
							output: 24
							thoughts: 17
						

Okay, here's my summary, tailored for an expert audience, as if it's my own thought process:

**Tracing the Invocation of `sp_init`**

Alright, let's dive in. I need to understand the call graph for `sp_init`. Where in the kernel's execution path is this function actually being invoked? I'm thinking I need to do a global search, a cross-reference across the entire source code base. I'm looking for *every* instance where `sp_init` is called directly. This includes the possibility of indirect calls through function pointers, but I'll start with the explicit calls to establish a baseline. I'll need to use my usual tools for this—probably `grep` or `find` combined with `ack` or something similar, and make sure that it respects include paths, of course. I'll want to filter out test files and header files to keep the signal-to-noise ratio high, although I probably should check those as well. Once I have the call sites, I'll need to analyze each location to get a handle on the context: what module or subsystem, what driver, what specific initialization path... the whole enchilada. This is standard kernel exploration, but the goal here is to grasp the full scope of `sp_init`’s usage within the entire kernel. From there, I can begin to reason about its dependencies, impact, and potential for modification, or even more investigation.

{
  "Expression": "sp_init",
  "PathPrefix": "drivers"
}

{
  "Output": "\nFull output is too long, showing 500 out of 2187 lines.\nUse more precise expression if possible.\n\ndrivers/auxdisplay/line-display.c=376=static const struct device_type linedisp_type = {\n--\ndrivers/auxdisplay/line-display.c-380-\ndrivers/auxdisplay/line-display.c:381:static int linedisp_init_map(struct linedisp *linedisp)\ndrivers/auxdisplay/line-display.c-382-{\n--\ndrivers/auxdisplay/line-display.c=438=int linedisp_attach(struct linedisp *linedisp, struct device *dev,\n--\ndrivers/auxdisplay/line-display.c-452-\t/* initialise a character mapping, if required */\ndrivers/auxdisplay/line-display.c:453:\terr = linedisp_init_map(linedisp);\ndrivers/auxdisplay/line-display.c-454-\tif (err)\n--\ndrivers/auxdisplay/line-display.c=523=int linedisp_register(struct linedisp *linedisp, struct device *parent,\n--\ndrivers/auxdisplay/line-display.c-548-\t/* initialise a character mapping, if required */\ndrivers/auxdisplay/line-display.c:549:\terr = linedisp_init_map(linedisp);\ndrivers/auxdisplay/line-display.c-550-\tif (err)\n--\ndrivers/bluetooth/hci_bcsp.c=748=static const struct hci_uart_proto bcsp = {\n--\ndrivers/bluetooth/hci_bcsp.c-758-\ndrivers/bluetooth/hci_bcsp.c:759:int __init bcsp_init(void)\ndrivers/bluetooth/hci_bcsp.c-760-{\n--\ndrivers/bluetooth/hci_ldisc.c=889=static int __init hci_uart_init(void)\n--\ndrivers/bluetooth/hci_ldisc.c-905-#ifdef CONFIG_BT_HCIUART_BCSP\ndrivers/bluetooth/hci_ldisc.c:906:\tbcsp_init();\ndrivers/bluetooth/hci_ldisc.c-907-#endif\n--\ndrivers/bluetooth/hci_uart.h=130=struct sk_buff *h4_recv_buf(struct hci_uart *hu, struct sk_buff *skb,\n--\ndrivers/bluetooth/hci_uart.h-135-#ifdef CONFIG_BT_HCIUART_BCSP\ndrivers/bluetooth/hci_uart.h:136:int bcsp_init(void);\ndrivers/bluetooth/hci_uart.h-137-int bcsp_deinit(void);\n--\ndrivers/clk/samsung/clk-exynos5260.c=333=static const struct samsung_cmu_info disp_cmu __initconst = {\n--\ndrivers/clk/samsung/clk-exynos5260.c-344-\ndrivers/clk/samsung/clk-exynos5260.c:345:static void __init exynos5260_clk_disp_init(struct device_node *np)\ndrivers/clk/samsung/clk-exynos5260.c-346-{\n--\ndrivers/clk/samsung/clk-exynos5260.c=350=CLK_OF_DECLARE(exynos5260_clk_disp, \"samsung,exynos5260-clock-disp\",\ndrivers/clk/samsung/clk-exynos5260.c:351:\t\texynos5260_clk_disp_init);\ndrivers/clk/samsung/clk-exynos5260.c-352-\n--\ndrivers/clk/samsung/clk-exynos5260.c=903=static const struct samsung_cmu_info isp_cmu __initconst = {\n--\ndrivers/clk/samsung/clk-exynos5260.c-914-\ndrivers/clk/samsung/clk-exynos5260.c:915:static void __init exynos5260_clk_isp_init(struct device_node *np)\ndrivers/clk/samsung/clk-exynos5260.c-916-{\n--\ndrivers/clk/samsung/clk-exynos5260.c=920=CLK_OF_DECLARE(exynos5260_clk_isp, \"samsung,exynos5260-clock-isp\",\ndrivers/clk/samsung/clk-exynos5260.c:921:\t\texynos5260_clk_isp_init);\ndrivers/clk/samsung/clk-exynos5260.c-922-\n--\ndrivers/crypto/ccp/hsti.c=80=static int psp_populate_hsti(struct psp_device *psp)\n--\ndrivers/crypto/ccp/hsti.c-114-\ndrivers/crypto/ccp/hsti.c:115:int psp_init_hsti(struct psp_device *psp)\ndrivers/crypto/ccp/hsti.c-116-{\n--\ndrivers/crypto/ccp/hsti.h=13=extern struct attribute_group psp_security_attr_group;\ndrivers/crypto/ccp/hsti.h-14-\ndrivers/crypto/ccp/hsti.h:15:int psp_init_hsti(struct psp_device *psp);\ndrivers/crypto/ccp/hsti.h-16-\n--\ndrivers/crypto/ccp/psp-dev.c=186=static int psp_check_sfs_support(struct psp_device *psp)\n--\ndrivers/crypto/ccp/psp-dev.c-196-\ndrivers/crypto/ccp/psp-dev.c:197:static int psp_init(struct psp_device *psp)\ndrivers/crypto/ccp/psp-dev.c-198-{\n--\ndrivers/crypto/ccp/psp-dev.c-233-\t/* HSTI uses platform access on some systems. */\ndrivers/crypto/ccp/psp-dev.c:234:\tret = psp_init_hsti(psp);\ndrivers/crypto/ccp/psp-dev.c-235-\tif (ret)\n--\ndrivers/crypto/ccp/psp-dev.c=241=int psp_dev_init(struct sp_device *sp)\n--\ndrivers/crypto/ccp/psp-dev.c-282-\ndrivers/crypto/ccp/psp-dev.c:283:\tret = psp_init(psp);\ndrivers/crypto/ccp/psp-dev.c-284-\tif (ret)\n--\ndrivers/crypto/ccp/sev-dev.c=72=MODULE_PARM_DESC(init_ex_path, \" Path for INIT_EX data; if set try INIT_EX\");\ndrivers/crypto/ccp/sev-dev.c-73-\ndrivers/crypto/ccp/sev-dev.c:74:static bool psp_init_on_probe = true;\ndrivers/crypto/ccp/sev-dev.c:75:module_param(psp_init_on_probe, bool, 0444);\ndrivers/crypto/ccp/sev-dev.c:76:MODULE_PARM_DESC(psp_init_on_probe, \"  if true, the PSP will be initialized on module init. Else the PSP will be initialized on the first command requiring it\");\ndrivers/crypto/ccp/sev-dev.c-77-\n--\ndrivers/crypto/ccp/sev-dev.c=1508=static int __sev_snp_init_locked(int *error, unsigned int max_snp_asid)\n--\ndrivers/crypto/ccp/sev-dev.c-1589-\t\t/*\ndrivers/crypto/ccp/sev-dev.c:1590:\t\t * When psp_init_on_probe is disabled, the userspace calling\ndrivers/crypto/ccp/sev-dev.c-1591-\t\t * SEV ioctl can inadvertently shut down SNP and SEV-TIO causing\n--\ndrivers/crypto/ccp/sev-dev.c-1593-\t\t */\ndrivers/crypto/ccp/sev-dev.c:1594:\t\tif (data.tio_en \u0026\u0026 !psp_init_on_probe)\ndrivers/crypto/ccp/sev-dev.c:1595:\t\t\tdev_warn(sev-\u003edev, \"SEV-TIO as incompatible with psp_init_on_probe=0\\n\");\ndrivers/crypto/ccp/sev-dev.c-1596-\n--\ndrivers/crypto/ccp/sev-dev.c=1801=static int _sev_platform_init_locked(struct sev_platform_init_args *args)\n--\ndrivers/crypto/ccp/sev-dev.c-1827-\t/* Defer legacy SEV/SEV-ES support if allowed by caller/module. */\ndrivers/crypto/ccp/sev-dev.c:1828:\tif (args-\u003eprobe \u0026\u0026 !psp_init_on_probe)\ndrivers/crypto/ccp/sev-dev.c-1829-\t\treturn 0;\n--\ndrivers/crypto/ccp/sp-dev.c=177=struct sp_device *sp_alloc_struct(struct device *dev)\n--\ndrivers/crypto/ccp/sp-dev.c-191-\ndrivers/crypto/ccp/sp-dev.c:192:int sp_init(struct sp_device *sp)\ndrivers/crypto/ccp/sp-dev.c-193-{\n--\ndrivers/crypto/ccp/sp-dev.h=137=struct sp_device *sp_alloc_struct(struct device *dev);\ndrivers/crypto/ccp/sp-dev.h-138-\ndrivers/crypto/ccp/sp-dev.h:139:int sp_init(struct sp_device *sp);\ndrivers/crypto/ccp/sp-dev.h-140-void sp_destroy(struct sp_device *sp);\n--\ndrivers/crypto/ccp/sp-pci.c=231=static int sp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)\n--\ndrivers/crypto/ccp/sp-pci.c-304-\ndrivers/crypto/ccp/sp-pci.c:305:\tret = sp_init(sp);\ndrivers/crypto/ccp/sp-pci.c-306-\tif (ret)\n--\ndrivers/crypto/ccp/sp-platform.c=97=static int sp_platform_probe(struct platform_device *pdev)\n--\ndrivers/crypto/ccp/sp-platform.c-152-\ndrivers/crypto/ccp/sp-platform.c:153:\tret = sp_init(sp);\ndrivers/crypto/ccp/sp-platform.c-154-\tif (ret)\n--\ndrivers/firmware/cirrus/cs_dsp.c=505=DEFINE_SHOW_ATTRIBUTE(cs_dsp_debugfs_read_controls);\n--\ndrivers/firmware/cirrus/cs_dsp.c-507-/**\ndrivers/firmware/cirrus/cs_dsp.c:508: * cs_dsp_init_debugfs() - Create and populate DSP representation in debugfs\ndrivers/firmware/cirrus/cs_dsp.c-509- * @dsp: pointer to DSP structure\n--\ndrivers/firmware/cirrus/cs_dsp.c-512- */\ndrivers/firmware/cirrus/cs_dsp.c:513:void cs_dsp_init_debugfs(struct cs_dsp *dsp, struct dentry *debugfs_root)\ndrivers/firmware/cirrus/cs_dsp.c-514-{\n--\ndrivers/firmware/cirrus/cs_dsp.c-534-}\ndrivers/firmware/cirrus/cs_dsp.c:535:EXPORT_SYMBOL_NS_GPL(cs_dsp_init_debugfs, \"FW_CS_DSP\");\ndrivers/firmware/cirrus/cs_dsp.c-536-\n--\ndrivers/firmware/cirrus/cs_dsp.c=547=EXPORT_SYMBOL_NS_GPL(cs_dsp_cleanup_debugfs, \"FW_CS_DSP\");\ndrivers/firmware/cirrus/cs_dsp.c-548-#else\ndrivers/firmware/cirrus/cs_dsp.c:549:void cs_dsp_init_debugfs(struct cs_dsp *dsp, struct dentry *debugfs_root)\ndrivers/firmware/cirrus/cs_dsp.c-550-{\ndrivers/firmware/cirrus/cs_dsp.c-551-}\ndrivers/firmware/cirrus/cs_dsp.c:552:EXPORT_SYMBOL_NS_GPL(cs_dsp_init_debugfs, \"FW_CS_DSP\");\ndrivers/firmware/cirrus/cs_dsp.c-553-\n--\ndrivers/firmware/cirrus/test/cs_dsp_mock_wmfw.c=399=EXPORT_SYMBOL_NS_GPL(cs_dsp_mock_wmfw_end_alg_info_block, \"FW_CS_DSP_KUNIT_TEST_UTILS\");\ndrivers/firmware/cirrus/test/cs_dsp_mock_wmfw.c-400-\ndrivers/firmware/cirrus/test/cs_dsp_mock_wmfw.c:401:static void cs_dsp_init_adsp2_halo_wmfw(struct cs_dsp_mock_wmfw_builder *builder)\ndrivers/firmware/cirrus/test/cs_dsp_mock_wmfw.c-402-{\n--\ndrivers/firmware/cirrus/test/cs_dsp_mock_wmfw.c=436=struct cs_dsp_mock_wmfw_builder *cs_dsp_mock_wmfw_init(struct cs_dsp_test *priv,\n--\ndrivers/firmware/cirrus/test/cs_dsp_mock_wmfw.c-469-\tcase WMFW_HALO:\ndrivers/firmware/cirrus/test/cs_dsp_mock_wmfw.c:470:\t\tcs_dsp_init_adsp2_halo_wmfw(builder);\ndrivers/firmware/cirrus/test/cs_dsp_mock_wmfw.c-471-\t\tbreak;\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c=108=static void psp_check_pmfw_centralized_cstate_management(struct psp_context *psp)\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-136-\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c:137:static int psp_init_sriov_microcode(struct psp_context *psp)\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-138-{\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-149-\t\tadev-\u003evirt.autoload_ucode_id = AMDGPU_UCODE_ID_CP_MEC2;\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c:150:\t\tret = psp_init_cap_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-151-\t\tbreak;\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-153-\t\tadev-\u003evirt.autoload_ucode_id = AMDGPU_UCODE_ID_CP_MEC2;\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c:154:\t\tret = psp_init_cap_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c:155:\t\tret \u0026= psp_init_ta_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-156-\t\tbreak;\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-162-\tcase IP_VERSION(13, 0, 15):\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c:163:\t\tret = psp_init_cap_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c:164:\t\tret \u0026= psp_init_ta_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-165-\t\tbreak;\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-167-\t\tadev-\u003evirt.autoload_ucode_id = AMDGPU_UCODE_ID_CP_MES1_DATA;\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c:168:\t\tret = psp_init_cap_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-169-\t\tbreak;\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-170-\tcase IP_VERSION(13, 0, 12):\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c:171:\t\tret = psp_init_ta_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-172-\t\tbreak;\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c=179=static int psp_early_init(struct amdgpu_ip_block *ip_block)\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-296-\tif (amdgpu_sriov_vf(adev))\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c:297:\t\treturn psp_init_sriov_microcode(psp);\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-298-\telse\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c:299:\t\treturn psp_init_microcode(psp);\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-300-}\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c=3917=int psp_ring_cmd_submit(struct psp_context *psp,\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-3968-\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c:3969:int psp_init_asd_microcode(struct psp_context *psp, const char *chip_name)\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-3970-{\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-3991-\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c:3992:int psp_init_toc_microcode(struct psp_context *psp, const char *chip_name)\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-3993-{\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c=4020=static int parse_sos_bin_descriptor(struct psp_context *psp,\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-4113-\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c:4114:static int psp_init_sos_base_fw(struct amdgpu_device *adev)\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-4115-{\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-4158-\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c:4159:int psp_init_sos_microcode(struct psp_context *psp, const char *chip_name)\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-4160-{\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-4188-\tcase 1:\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c:4189:\t\terr = psp_init_sos_base_fw(adev);\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-4190-\t\tif (err)\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c=4420=static int parse_ta_v2_microcode(struct psp_context *psp)\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-4447-\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c:4448:int psp_init_ta_microcode(struct psp_context *psp, const char *chip_name)\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-4449-{\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-4481-\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c:4482:int psp_init_cap_microcode(struct psp_context *psp, const char *chip_name)\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.c-4483-{\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.h=480=struct amdgpu_psp_funcs {\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.h-488-#define psp_ring_destroy(psp, type) ((psp)-\u003efuncs-\u003ering_destroy((psp), (type)))\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.h:489:#define psp_init_microcode(psp) \\\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.h-490-\t\t((psp)-\u003efuncs-\u003einit_microcode ? (psp)-\u003efuncs-\u003einit_microcode((psp)) : 0)\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.h=623=int psp_ring_cmd_submit(struct psp_context *psp,\n--\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.h-626-\t\t\tint index);\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.h:627:int psp_init_asd_microcode(struct psp_context *psp,\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.h-628-\t\t\t   const char *chip_name);\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.h:629:int psp_init_toc_microcode(struct psp_context *psp,\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.h-630-\t\t\t   const char *chip_name);\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.h:631:int psp_init_sos_microcode(struct psp_context *psp,\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.h-632-\t\t\t   const char *chip_name);\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.h:633:int psp_init_ta_microcode(struct psp_context *psp,\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.h-634-\t\t\t  const char *chip_name);\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.h:635:int psp_init_cap_microcode(struct psp_context *psp,\ndrivers/gpu/drm/amd/amdgpu/amdgpu_psp.h-636-\t\t\t  const char *chip_name);\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v10_0.c=47=static int psp_v10_0_init_microcode(struct psp_context *psp)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v10_0.c-55-\ndrivers/gpu/drm/amd/amdgpu/psp_v10_0.c:56:\terr = psp_init_asd_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v10_0.c-57-\tif (err)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v10_0.c-59-\ndrivers/gpu/drm/amd/amdgpu/psp_v10_0.c:60:\terr = psp_init_ta_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v10_0.c-61-\tif ((amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 1, 0)) \u0026\u0026\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c=88=static int psp_v11_0_init_microcode(struct psp_context *psp)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-100-\tcase IP_VERSION(11, 0, 4):\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c:101:\t\terr = psp_init_sos_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-102-\t\tif (err)\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-103-\t\t\treturn err;\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c:104:\t\terr = psp_init_asd_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-105-\t\tif (err)\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-106-\t\t\treturn err;\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c:107:\t\terr = psp_init_ta_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-108-\t\tadev-\u003epsp.securedisplay_context.context.bin_desc.size_bytes = 0;\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-112-\tcase IP_VERSION(11, 0, 9):\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c:113:\t\terr = psp_init_sos_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-114-\t\tif (err)\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-115-\t\t\treturn err;\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c:116:\t\terr = psp_init_asd_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-117-\t\tif (err)\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-118-\t\t\treturn err;\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c:119:\t\terr = psp_init_ta_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-120-\t\tadev-\u003epsp.securedisplay_context.context.bin_desc.size_bytes = 0;\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-125-\tcase IP_VERSION(11, 0, 13):\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c:126:\t\terr = psp_init_sos_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-127-\t\tif (err)\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-128-\t\t\treturn err;\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c:129:\t\terr = psp_init_ta_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-130-\t\tbreak;\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-132-\tcase IP_VERSION(11, 5, 2):\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c:133:\t\terr = psp_init_asd_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-134-\t\tif (err)\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-135-\t\t\treturn err;\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c:136:\t\terr = psp_init_toc_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v11_0.c-137-\t\tbreak;\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v12_0.c=45=static int psp_v12_0_init_microcode(struct psp_context *psp)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v12_0.c-53-\ndrivers/gpu/drm/amd/amdgpu/psp_v12_0.c:54:\terr = psp_init_asd_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v12_0.c-55-\tif (err)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v12_0.c-57-\ndrivers/gpu/drm/amd/amdgpu/psp_v12_0.c:58:\terr = psp_init_ta_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v12_0.c-59-\tif (err)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0.c=85=static int psp_v13_0_init_microcode(struct psp_context *psp)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0.c-94-\tcase IP_VERSION(13, 0, 2):\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0.c:95:\t\terr = psp_init_sos_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0.c-96-\t\tif (err)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0.c-99-\t\tif (!amdgpu_sriov_vf(adev)) {\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0.c:100:\t\t\terr = psp_init_ta_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0.c-101-\t\t\tif (err)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0.c-112-\tcase IP_VERSION(14, 0, 4):\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0.c:113:\t\terr = psp_init_toc_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0.c-114-\t\tif (err)\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0.c-115-\t\t\treturn err;\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0.c:116:\t\terr = psp_init_ta_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0.c-117-\t\tif (err)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0.c-126-\tcase IP_VERSION(13, 0, 15):\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0.c:127:\t\terr = psp_init_sos_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0.c-128-\t\tif (err)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0.c-130-\t\t/* It's not necessary to load ras ta on Guest side */\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0.c:131:\t\terr = psp_init_ta_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0.c-132-\t\tif (err)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0_4.c=35=static int psp_v13_0_4_init_microcode(struct psp_context *psp)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0_4.c-44-\tcase IP_VERSION(13, 0, 4):\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0_4.c:45:\t\terr = psp_init_toc_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0_4.c-46-\t\tif (err)\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0_4.c-47-\t\t\treturn err;\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0_4.c:48:\t\terr = psp_init_ta_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v13_0_4.c-49-\t\tif (err)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v14_0.c=61=static int psp_v14_0_init_microcode(struct psp_context *psp)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v14_0.c-71-\tcase IP_VERSION(14, 0, 3):\ndrivers/gpu/drm/amd/amdgpu/psp_v14_0.c:72:\t\terr = psp_init_sos_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v14_0.c-73-\t\tif (err)\ndrivers/gpu/drm/amd/amdgpu/psp_v14_0.c-74-\t\t\treturn err;\ndrivers/gpu/drm/amd/amdgpu/psp_v14_0.c:75:\t\terr = psp_init_ta_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v14_0.c-76-\t\tif (err)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v14_0.c-79-\tcase IP_VERSION(14, 0, 5):\ndrivers/gpu/drm/amd/amdgpu/psp_v14_0.c:80:\t\terr = psp_init_toc_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v14_0.c-81-\t\tif (err)\ndrivers/gpu/drm/amd/amdgpu/psp_v14_0.c-82-\t\t\treturn err;\ndrivers/gpu/drm/amd/amdgpu/psp_v14_0.c:83:\t\terr = psp_init_ta_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v14_0.c-84-\t\tif (err)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v15_0.c=52=static int psp_v15_0_0_init_microcode(struct psp_context *psp)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v15_0.c-59-\ndrivers/gpu/drm/amd/amdgpu/psp_v15_0.c:60:\terr = psp_init_toc_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v15_0.c-61-\tif (err)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v15_0.c-63-\ndrivers/gpu/drm/amd/amdgpu/psp_v15_0.c:64:\terr = psp_init_ta_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v15_0.c-65-\tif (err)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v15_0_8.c=37=static int psp_v15_0_8_init_microcode(struct psp_context *psp)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v15_0_8.c-44-\ndrivers/gpu/drm/amd/amdgpu/psp_v15_0_8.c:45:\terr = psp_init_toc_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v15_0_8.c-46-\tif (err)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v3_1.c=57=static int psp_v3_1_init_microcode(struct psp_context *psp)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v3_1.c-66-\ndrivers/gpu/drm/amd/amdgpu/psp_v3_1.c:67:\terr = psp_init_sos_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v3_1.c-68-\tif (err)\n--\ndrivers/gpu/drm/amd/amdgpu/psp_v3_1.c-70-\ndrivers/gpu/drm/amd/amdgpu/psp_v3_1.c:71:\terr = psp_init_asd_microcode(psp, ucode_prefix);\ndrivers/gpu/drm/amd/amdgpu/psp_v3_1.c-72-\tif (err)\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/base.c=118=static int\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/base.c:119:nvkm_disp_init(struct nvkm_engine *engine)\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/base.c-120-{\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/base.c=219=nvkm_disp = {\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/base.c-221-\t.oneinit = nvkm_disp_oneinit,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/base.c:222:\t.init = nvkm_disp_init,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/base.c-223-\t.fini = nvkm_disp_fini,\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/g84.c=322=g84_disp = {\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/g84.c-323-\t.oneinit = nv50_disp_oneinit,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/g84.c:324:\t.init = nv50_disp_init,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/g84.c-325-\t.fini = nv50_disp_fini,\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/g94.c=352=g94_disp = {\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/g94.c-353-\t.oneinit = nv50_disp_oneinit,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/g94.c:354:\t.init = nv50_disp_init,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/g94.c-355-\t.fini = nv50_disp_fini,\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/ga102.c=125=ga102_disp = {\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/ga102.c-126-\t.oneinit = nv50_disp_oneinit,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/ga102.c:127:\t.init = tu102_disp_init,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/ga102.c-128-\t.fini = gv100_disp_fini,\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gf119.c=1164=int\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gf119.c:1165:gf119_disp_init(struct nvkm_disp *disp)\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gf119.c-1166-{\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gf119.c=1234=gf119_disp = {\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gf119.c-1235-\t.oneinit = nv50_disp_oneinit,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gf119.c:1236:\t.init = gf119_disp_init,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gf119.c-1237-\t.fini = gf119_disp_fini,\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gk104.c=306=gk104_disp = {\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gk104.c-307-\t.oneinit = nv50_disp_oneinit,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gk104.c:308:\t.init = gf119_disp_init,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gk104.c-309-\t.fini = gf119_disp_fini,\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gk110.c=32=gk110_disp = {\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gk110.c-33-\t.oneinit = nv50_disp_oneinit,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gk110.c:34:\t.init = gf119_disp_init,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gk110.c-35-\t.fini = gf119_disp_fini,\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gm107.c=86=gm107_disp = {\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gm107.c-87-\t.oneinit = nv50_disp_oneinit,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gm107.c:88:\t.init = gf119_disp_init,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gm107.c-89-\t.fini = gf119_disp_fini,\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gm200.c=169=gm200_disp = {\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gm200.c-170-\t.oneinit = nv50_disp_oneinit,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gm200.c:171:\t.init = gf119_disp_init,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gm200.c-172-\t.fini = gf119_disp_fini,\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gp100.c=59=gp100_disp = {\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gp100.c-60-\t.oneinit = nv50_disp_oneinit,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gp100.c:61:\t.init = gf119_disp_init,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gp100.c-62-\t.fini = gf119_disp_fini,\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gp102.c=174=gp102_disp = {\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gp102.c-175-\t.oneinit = nv50_disp_oneinit,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gp102.c:176:\t.init = gf119_disp_init,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gp102.c-177-\t.fini = gf119_disp_fini,\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gt200.c=82=gt200_disp = {\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gt200.c-83-\t.oneinit = nv50_disp_oneinit,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gt200.c:84:\t.init = nv50_disp_init,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gt200.c-85-\t.fini = nv50_disp_fini,\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gt215.c=240=gt215_disp = {\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gt215.c-241-\t.oneinit = nv50_disp_oneinit,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gt215.c:242:\t.init = nv50_disp_init,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gt215.c-243-\t.fini = nv50_disp_fini,\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gv100.c=1124=static int\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gv100.c:1125:gv100_disp_init(struct nvkm_disp *disp)\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gv100.c-1126-{\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gv100.c=1227=gv100_disp = {\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gv100.c-1228-\t.oneinit = nv50_disp_oneinit,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gv100.c:1229:\t.init = gv100_disp_init,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/gv100.c-1230-\t.fini = gv100_disp_fini,\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/mcp77.c=46=mcp77_disp = {\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/mcp77.c-47-\t.oneinit = nv50_disp_oneinit,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/mcp77.c:48:\t.init = nv50_disp_init,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/mcp77.c-49-\t.fini = nv50_disp_fini,\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/mcp89.c=60=mcp89_disp = {\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/mcp89.c-61-\t.oneinit = nv50_disp_oneinit,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/mcp89.c:62:\t.init = nv50_disp_init,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/mcp89.c-63-\t.fini = nv50_disp_fini,\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.c=1515=int\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.c:1516:nv50_disp_init(struct nvkm_disp *disp)\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.c-1517-{\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.c=1768=nv50_disp = {\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.c-1769-\t.oneinit = nv50_disp_oneinit,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.c:1770:\t.init = nv50_disp_init,\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.c-1771-\t.fini = nv50_disp_fini,\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/priv.h=65=int nv50_disp_oneinit(struct nvkm_disp *);\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/priv.h:66:int nv50_disp_init(struct nvkm_disp *);\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/priv.h-67-void nv50_disp_fini(struct nvkm_disp *, bool suspend);\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/priv.h=76=void nv50_disp_super_3_0(struct nvkm_disp *, struct nvkm_head *);\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/priv.h-77-\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/priv.h:78:int gf119_disp_init(struct nvkm_disp *);\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/priv.h-79-void gf119_disp_fini(struct nvkm_disp *, bool suspend);\n--\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/priv.h=88=int gv100_disp_caps_new(const struct nvkm_oclass *, void *, u32, struct nvkm_object **);\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/priv.h-89-\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/priv.h:90:int tu102_disp_init(struct nvkm_disp *);\ndrivers/gpu/drm/nouveau/nvkm/engine/disp/priv.h-91-irqreturn_t tu102_disp_intr(struct nvkm_inth *);\n--\n\n"
}

gemini-3.8-flash

null

null

							input: 34890
							output: 27
							thoughts: 12
						

Here's my thought process, as requested:

**Targeting the `sp_init("` Signature**

Okay, so I'm looking at this code, and the first thing I'm doing is trying to pinpoint a specific, potentially revealing pattern. Instead of a general search, let's zero in. I'm thinking, "Let's search *specifically* for something unique." And then it hits me: the `sp_init("` string. That's a decent target. It's likely a function call – the "sp" prefix could be anything – but the `init` part is key. That likely signals an initialization routine, and the open parenthesis means it’s a function call. It might give me a good jumping-off point to understand how the system is being set up. This will help me narrow down the scope of my initial analysis and avoid getting lost in irrelevant code. This search term feels like a good, focused starting point.

{
  "Expression": "\\bsp_init\\(",
  "PathPrefix": "drivers"
}

{
  "Output": "drivers/crypto/ccp/sp-dev.c=177=struct sp_device *sp_alloc_struct(struct device *dev)\n--\ndrivers/crypto/ccp/sp-dev.c-191-\ndrivers/crypto/ccp/sp-dev.c:192:int sp_init(struct sp_device *sp)\ndrivers/crypto/ccp/sp-dev.c-193-{\n--\ndrivers/crypto/ccp/sp-dev.h=137=struct sp_device *sp_alloc_struct(struct device *dev);\ndrivers/crypto/ccp/sp-dev.h-138-\ndrivers/crypto/ccp/sp-dev.h:139:int sp_init(struct sp_device *sp);\ndrivers/crypto/ccp/sp-dev.h-140-void sp_destroy(struct sp_device *sp);\n--\ndrivers/crypto/ccp/sp-pci.c=231=static int sp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)\n--\ndrivers/crypto/ccp/sp-pci.c-304-\ndrivers/crypto/ccp/sp-pci.c:305:\tret = sp_init(sp);\ndrivers/crypto/ccp/sp-pci.c-306-\tif (ret)\n--\ndrivers/crypto/ccp/sp-platform.c=97=static int sp_platform_probe(struct platform_device *pdev)\n--\ndrivers/crypto/ccp/sp-platform.c-152-\ndrivers/crypto/ccp/sp-platform.c:153:\tret = sp_init(sp);\ndrivers/crypto/ccp/sp-platform.c-154-\tif (ret)\n"
}

gemini-3.8-flash

null

null

							input: 35588
							output: 27
							thoughts: 48
						

Here's my thinking:

**Examining the Initialization and Destruction of `sp`**

Okay, so I'm looking at the initialization of this `sp` thing. Based on my analysis, `sp_init` is exclusively called from two functions: `sp_pci_probe`, which obviously handles PCI device probing, and `sp_platform_probe`, which seems specific to the Seattle ARM64 platform. That's good to know; it narrows down the scope of where and how this `sp` is brought to life. But I immediately have a follow-up question. I need to know about the other side of the coin - what about its demise? What destroys the `sp` object? Where is `sp_destroy` called? I need to understand its complete lifecycle to assess the implications of its creation. That's the next step; understanding the destruction.

{
  "Expression": "\\bsp_destroy\\(",
  "PathPrefix": "drivers"
}

{
  "Output": "drivers/crypto/ccp/sp-dev.c=192=int sp_init(struct sp_device *sp)\n--\ndrivers/crypto/ccp/sp-dev.c-203-\ndrivers/crypto/ccp/sp-dev.c:204:void sp_destroy(struct sp_device *sp)\ndrivers/crypto/ccp/sp-dev.c-205-{\n--\ndrivers/crypto/ccp/sp-dev.h=139=int sp_init(struct sp_device *sp);\ndrivers/crypto/ccp/sp-dev.h:140:void sp_destroy(struct sp_device *sp);\ndrivers/crypto/ccp/sp-dev.h-141-\n--\ndrivers/crypto/ccp/sp-pci.c=318=static void sp_pci_shutdown(struct pci_dev *pdev)\n--\ndrivers/crypto/ccp/sp-pci.c-325-\ndrivers/crypto/ccp/sp-pci.c:326:\tsp_destroy(sp);\ndrivers/crypto/ccp/sp-pci.c-327-}\n--\ndrivers/crypto/ccp/sp-pci.c=329=static void sp_pci_remove(struct pci_dev *pdev)\n--\ndrivers/crypto/ccp/sp-pci.c-336-\ndrivers/crypto/ccp/sp-pci.c:337:\tsp_destroy(sp);\ndrivers/crypto/ccp/sp-pci.c-338-\n--\ndrivers/crypto/ccp/sp-platform.c=166=static void sp_platform_remove(struct platform_device *pdev)\n--\ndrivers/crypto/ccp/sp-platform.c-170-\ndrivers/crypto/ccp/sp-platform.c:171:\tsp_destroy(sp);\ndrivers/crypto/ccp/sp-platform.c-172-\n"
}

gemini-3.8-flash

null

null

							input: 36346
							output: 44
							thoughts: 208
						

**Analyzing the Lifecycle of CCP5 in the Crypto Driver**

Okay, so I'm focusing on `sp_destroy`. It's crucial to understand its scope. From what I can see, it's *only* called from `sp_pci_shutdown`, `sp_pci_remove`, and `sp_platform_remove`. That seems straightforward. But wait, what about `ccp5_init`? I need to make sure I'm not missing anything. Ah, right, that's the `.init` callback within `ccp5_actions`. I need to track those lifecycle events.

Let's do a deeper dive to understand what's happening under the hood. I should check where `.sbfree`, `.init`, `.destroy`, and `.get_free_slots` are called. I'll start with `drivers/crypto/ccp/ccp-dev.c`. 

Okay, I'm digging into `ccp_dev_init`. I see it calls `ccp->vdata->perform->init(ccp);`, which is the correct behaviour. And `ccp_dev_destroy` calls `ccp->vdata->perform->destroy(ccp);`.

Now, the important question is when `ccp_dev_init` fails and executes the `e_irq` routine. This is a critical point to pinpoint potential error states. I need to understand that flow. So, I need to focus on `ccp5_init` specifically to understand the error path. I need to look in `drivers/crypto/ccp/ccp-dev-v5.c`.

{
  "File": "drivers/crypto/ccp/ccp-dev-v5.c",
  "FirstLine": 940,
  "LineCount": 68
}

{
  "Contents": " 940:\t\t/* Optimization: pre-allocate LSB slots for each queue */\n 941:\t\tfor (i = 0; i \u003c ccp-\u003ecmd_q_count; i++) {\n 942:\t\t\tccp-\u003ecmd_q[i].sb_key = ccp_lsb_alloc(\u0026ccp-\u003ecmd_q[i], 2);\n 943:\t\t\tccp-\u003ecmd_q[i].sb_ctx = ccp_lsb_alloc(\u0026ccp-\u003ecmd_q[i], 2);\n 944:\t\t}\n 945:\t\n 946:\t\tdev_dbg(dev, \"Starting threads...\\n\");\n 947:\t\t/* Create a kthread for each queue */\n 948:\t\tfor (i = 0; i \u003c ccp-\u003ecmd_q_count; i++) {\n 949:\t\t\tstruct task_struct *kthread;\n 950:\t\n 951:\t\t\tcmd_q = \u0026ccp-\u003ecmd_q[i];\n 952:\t\n 953:\t\t\tkthread = kthread_run(ccp_cmd_queue_thread, cmd_q,\n 954:\t\t\t\t\t      \"%s-q%u\", ccp-\u003ename, cmd_q-\u003eid);\n 955:\t\t\tif (IS_ERR(kthread)) {\n 956:\t\t\t\tdev_err(dev, \"error creating queue thread (%ld)\\n\",\n 957:\t\t\t\t\tPTR_ERR(kthread));\n 958:\t\t\t\tret = PTR_ERR(kthread);\n 959:\t\t\t\tgoto e_kthread;\n 960:\t\t\t}\n 961:\t\n 962:\t\t\tcmd_q-\u003ekthread = kthread;\n 963:\t\t}\n 964:\t\n 965:\t\tdev_dbg(dev, \"Enabling interrupts...\\n\");\n 966:\t\tccp5_enable_queue_interrupts(ccp);\n 967:\t\n 968:\t\tdev_dbg(dev, \"Registering device...\\n\");\n 969:\t\t/* Put this on the unit list to make it available */\n 970:\t\tccp_add_device(ccp);\n 971:\t\n 972:\t\tret = ccp_register_rng(ccp);\n 973:\t\tif (ret)\n 974:\t\t\tgoto e_kthread;\n 975:\t\n 976:\t\t/* Register the DMA engine support */\n 977:\t\tret = ccp_dmaengine_register(ccp);\n 978:\t\tif (ret)\n 979:\t\t\tgoto e_hwrng;\n 980:\t\n 981:\t#ifdef CONFIG_CRYPTO_DEV_CCP_DEBUGFS\n 982:\t\t/* Set up debugfs entries */\n 983:\t\tccp5_debugfs_setup(ccp);\n 984:\t#endif\n 985:\t\n 986:\t\treturn 0;\n 987:\t\n 988:\te_hwrng:\n 989:\t\tccp_unregister_rng(ccp);\n 990:\t\n 991:\te_kthread:\n 992:\t\tfor (i = 0; i \u003c ccp-\u003ecmd_q_count; i++)\n 993:\t\t\tif (ccp-\u003ecmd_q[i].kthread)\n 994:\t\t\t\tkthread_stop(ccp-\u003ecmd_q[i].kthread);\n 995:\t\n 996:\te_irq:\n 997:\t\tsp_free_ccp_irq(ccp-\u003esp, ccp);\n 998:\t\tif (ccp-\u003euse_tasklet)\n 999:\t\t\ttasklet_kill(\u0026ccp-\u003eirq_tasklet);\n1000:\t\n1001:\te_pool:\n1002:\t\tfor (i = 0; i \u003c ccp-\u003ecmd_q_count; i++)\n1003:\t\t\tdma_pool_destroy(ccp-\u003ecmd_q[i].dma_pool);\n1004:\t\n1005:\t\treturn ret;\n1006:\t}\n1007:\t\n"
}

gemini-3.8-flash

null

null

							input: 38024
							output: 44
							thoughts: 14
						

Okay, here's my interpretation of what's going on, formatted as you requested:

**Deconstructing `ccp5_init`**

Alright, let's dive in. My mind is immediately drawn to the need to understand how `ccp5_init` is structured. I'm focusing on the earlier lines of code within that function. I need to refresh my memory and understand the very foundational aspects, the setup. This helps me get the lay of the land, so to speak. I am going to make sure I understand the context for any analysis that follows. Understanding those initial steps, the early lines, is critical for grasping the broader function's purpose and any potential issues within it. I’m thinking, this initial examination is fundamental for any deeper investigation into its behavior.

{
  "File": "drivers/crypto/ccp/ccp-dev-v5.c",
  "FirstLine": 780,
  "LineCount": 80
}

{
  "Contents": " 780:\t{\n 781:\t\tstruct device *dev = ccp-\u003edev;\n 782:\t\tstruct ccp_cmd_queue *cmd_q;\n 783:\t\tstruct dma_pool *dma_pool;\n 784:\t\tchar dma_pool_name[MAX_DMAPOOL_NAME_LEN];\n 785:\t\tunsigned int qmr, i;\n 786:\t\tu64 status;\n 787:\t\tu32 status_lo, status_hi;\n 788:\t\tint ret;\n 789:\t\n 790:\t\t/* Find available queues */\n 791:\t\tqmr = ioread32(ccp-\u003eio_regs + Q_MASK_REG);\n 792:\t\t/*\n 793:\t\t * Check for a access to the registers.  If this read returns\n 794:\t\t * 0xffffffff, it's likely that the system is running a broken\n 795:\t\t * BIOS which disallows access to the device. Stop here and fail\n 796:\t\t * the initialization (but not the load, as the PSP could get\n 797:\t\t * properly initialized).\n 798:\t\t */\n 799:\t\tif (qmr == 0xffffffff) {\n 800:\t\t\tdev_notice(dev, \"ccp: unable to access the device: you might be running a broken BIOS.\\n\");\n 801:\t\t\treturn 1;\n 802:\t\t}\n 803:\t\n 804:\t\tfor (i = 0; (i \u003c MAX_HW_QUEUES) \u0026\u0026 (ccp-\u003ecmd_q_count \u003c ccp-\u003emax_q_count); i++) {\n 805:\t\t\tif (!(qmr \u0026 (1 \u003c\u003c i)))\n 806:\t\t\t\tcontinue;\n 807:\t\n 808:\t\t\t/* Allocate a dma pool for this queue */\n 809:\t\t\tsnprintf(dma_pool_name, sizeof(dma_pool_name), \"%s_q%d\",\n 810:\t\t\t\t ccp-\u003ename, i);\n 811:\t\t\tdma_pool = dma_pool_create(dma_pool_name, dev,\n 812:\t\t\t\t\t\t   CCP_DMAPOOL_MAX_SIZE,\n 813:\t\t\t\t\t\t   CCP_DMAPOOL_ALIGN, 0);\n 814:\t\t\tif (!dma_pool) {\n 815:\t\t\t\tdev_err(dev, \"unable to allocate dma pool\\n\");\n 816:\t\t\t\tret = -ENOMEM;\n 817:\t\t\t\tgoto e_pool;\n 818:\t\t\t}\n 819:\t\n 820:\t\t\tcmd_q = \u0026ccp-\u003ecmd_q[ccp-\u003ecmd_q_count];\n 821:\t\t\tccp-\u003ecmd_q_count++;\n 822:\t\n 823:\t\t\tcmd_q-\u003eccp = ccp;\n 824:\t\t\tcmd_q-\u003eid = i;\n 825:\t\t\tcmd_q-\u003edma_pool = dma_pool;\n 826:\t\t\tmutex_init(\u0026cmd_q-\u003eq_mutex);\n 827:\t\n 828:\t\t\t/* Page alignment satisfies our needs for N \u003c= 128 */\n 829:\t\t\tBUILD_BUG_ON(COMMANDS_PER_QUEUE \u003e 128);\n 830:\t\t\tcmd_q-\u003eqsize = Q_SIZE(Q_DESC_SIZE);\n 831:\t\t\tcmd_q-\u003eqbase = dmam_alloc_coherent(dev, cmd_q-\u003eqsize,\n 832:\t\t\t\t\t\t\t   \u0026cmd_q-\u003eqbase_dma,\n 833:\t\t\t\t\t\t\t   GFP_KERNEL);\n 834:\t\t\tif (!cmd_q-\u003eqbase) {\n 835:\t\t\t\tdev_err(dev, \"unable to allocate command queue\\n\");\n 836:\t\t\t\tret = -ENOMEM;\n 837:\t\t\t\tgoto e_pool;\n 838:\t\t\t}\n 839:\t\n 840:\t\t\tcmd_q-\u003eqidx = 0;\n 841:\t\t\t/* Preset some register values and masks that are queue\n 842:\t\t\t * number dependent\n 843:\t\t\t */\n 844:\t\t\tcmd_q-\u003ereg_control = ccp-\u003eio_regs +\n 845:\t\t\t\t\t     CMD5_Q_STATUS_INCR * (i + 1);\n 846:\t\t\tcmd_q-\u003ereg_tail_lo = cmd_q-\u003ereg_control + CMD5_Q_TAIL_LO_BASE;\n 847:\t\t\tcmd_q-\u003ereg_head_lo = cmd_q-\u003ereg_control + CMD5_Q_HEAD_LO_BASE;\n 848:\t\t\tcmd_q-\u003ereg_int_enable = cmd_q-\u003ereg_control +\n 849:\t\t\t\t\t\tCMD5_Q_INT_ENABLE_BASE;\n 850:\t\t\tcmd_q-\u003ereg_interrupt_status = cmd_q-\u003ereg_control +\n 851:\t\t\t\t\t\t      CMD5_Q_INTERRUPT_STATUS_BASE;\n 852:\t\t\tcmd_q-\u003ereg_status = cmd_q-\u003ereg_control + CMD5_Q_STATUS_BASE;\n 853:\t\t\tcmd_q-\u003ereg_int_status = cmd_q-\u003ereg_control +\n 854:\t\t\t\t\t\tCMD5_Q_INT_STATUS_BASE;\n 855:\t\t\tcmd_q-\u003ereg_dma_status = cmd_q-\u003ereg_control +\n 856:\t\t\t\t\t\tCMD5_Q_DMA_STATUS_BASE;\n 857:\t\t\tcmd_q-\u003ereg_dma_read_status = cmd_q-\u003ereg_control +\n 858:\t\t\t\t\t\t     CMD5_Q_DMA_READ_STATUS_BASE;\n 859:\t\t\tcmd_q-\u003ereg_dma_write_status = cmd_q-\u003ereg_control +\n"
}

gemini-3.8-flash

null

null

							input: 39726
							output: 44
							thoughts: 14
						

Okay, here's my interpretation of that request, formatted as requested:

**Navigating Lines 860-900**

Alright, let's zero in on lines 860 through 900. I need to understand what's happening within that specific segment of the code (or perhaps the text, document, whatever the context). I'm not just going to skim it; I need to thoroughly dissect those lines. My focus will be on the critical elements: the logic being implemented, the data being manipulated, or the arguments being presented. What are the key operations? Are there any potential bottlenecks, vulnerabilities, or areas ripe for optimization or revision? It's about pulling those specific lines apart, understanding their role in the bigger picture, and identifying any implications, inconsistencies, or hidden assumptions. I'll be looking for nuances and details I can either build upon or challenge.

{
  "File": "drivers/crypto/ccp/ccp-dev-v5.c",
  "FirstLine": 860,
  "LineCount": 45
}

{
  "Contents": " 860:\t\t\t\t\t\t      CMD5_Q_DMA_WRITE_STATUS_BASE;\n 861:\t\n 862:\t\t\tinit_waitqueue_head(\u0026cmd_q-\u003eint_queue);\n 863:\t\n 864:\t\t\tdev_dbg(dev, \"queue #%u available\\n\", i);\n 865:\t\t}\n 866:\t\n 867:\t\tif (ccp-\u003ecmd_q_count == 0) {\n 868:\t\t\tdev_notice(dev, \"no command queues available\\n\");\n 869:\t\t\tret = 1;\n 870:\t\t\tgoto e_pool;\n 871:\t\t}\n 872:\t\n 873:\t\t/* Turn off the queues and disable interrupts until ready */\n 874:\t\tccp5_disable_queue_interrupts(ccp);\n 875:\t\tfor (i = 0; i \u003c ccp-\u003ecmd_q_count; i++) {\n 876:\t\t\tcmd_q = \u0026ccp-\u003ecmd_q[i];\n 877:\t\n 878:\t\t\tcmd_q-\u003eqcontrol = 0; /* Start with nothing */\n 879:\t\t\tiowrite32(cmd_q-\u003eqcontrol, cmd_q-\u003ereg_control);\n 880:\t\n 881:\t\t\tioread32(cmd_q-\u003ereg_int_status);\n 882:\t\t\tioread32(cmd_q-\u003ereg_status);\n 883:\t\n 884:\t\t\t/* Clear the interrupt status */\n 885:\t\t\tiowrite32(SUPPORTED_INTERRUPTS, cmd_q-\u003ereg_interrupt_status);\n 886:\t\t}\n 887:\t\n 888:\t\tdev_dbg(dev, \"Requesting an IRQ...\\n\");\n 889:\t\t/* Request an irq */\n 890:\t\tret = sp_request_ccp_irq(ccp-\u003esp, ccp5_irq_handler, ccp-\u003ename, ccp);\n 891:\t\tif (ret) {\n 892:\t\t\tdev_err(dev, \"unable to allocate an IRQ\\n\");\n 893:\t\t\tgoto e_pool;\n 894:\t\t}\n 895:\t\t/* Initialize the ISR tasklet */\n 896:\t\tif (ccp-\u003euse_tasklet)\n 897:\t\t\ttasklet_init(\u0026ccp-\u003eirq_tasklet, ccp5_irq_bh,\n 898:\t\t\t\t     (unsigned long)ccp);\n 899:\t\n 900:\t\tdev_dbg(dev, \"Loading LSB map...\\n\");\n 901:\t\t/* Copy the private LSB mask to the public registers */\n 902:\t\tstatus_lo = ioread32(ccp-\u003eio_regs + LSB_PRIVATE_MASK_LO_OFFSET);\n 903:\t\tstatus_hi = ioread32(ccp-\u003eio_regs + LSB_PRIVATE_MASK_HI_OFFSET);\n 904:\t\tiowrite32(status_lo, ccp-\u003eio_regs + LSB_PUBLIC_MASK_LO_OFFSET);\n"
}

gemini-3.8-flash

null

null

							input: 40781
							output: 31
							thoughts: 545
						

**My Analysis of the AMD CCP Driver and its Implications for Fuzzing**

Alright, let's break this down. First, I see that this driver, specifically for the AMD Cryptographic Coprocessor (CCP) version 5, is the focus here. The key takeaway is the hardware dependency. The driver is probing for physical AMD hardware with specific PCI vendor and device IDs: `PCI_VDEVICE(AMD, 0x1537), 0x1456, 0x1468, 0x1486, 0x15DF, 0x14CA, 0x15C7, 0x1649, 0x1134, 0x17E0, 0x156E, 0x17D8, 0x115A`. These are physical CCP chips integrated into AMD Zen and earlier CPUs/APUs. No surprises there.

The crucial point, as I understand it, is that *this hardware isn't emulated* in standard virtualized environments like QEMU or Google Compute Engine (GCE). QEMU, in its vanilla state, doesn't bother to emulate AMD CCP devices. This means that any code paths dependent on that hardware, for instance the `ccp5_init` and `ccp5_destroy` functions, are essentially unreachable in these commonly-used fuzzing environments.

Now, let's look at the teardown paths. `ccp5_destroy` is only called during driver removal or shutdown sequences: `sp_pci_remove` -> `sp_destroy` -> `ccp_dev_destroy` -> `ccp5_destroy` or `sp_pci_shutdown` -> `sp_destroy` -> `ccp_dev_destroy` -> `ccp5_destroy`. The text explicitly states that these teardown callbacks (.remove, .shutdown, pci_unregister_driver) are only executed during hot-unplug operations of a physical PCI device or manual sysfs driver unbinding. This implies the same inaccessibility due to the lack of hardware emulation. The document mentions other unreachable hardware, such as PCIe switches, SmartNICs, or GPU drivers (mlxsw, pds_core, qed, ionic, amdgpu) that need physical ASIC/PCIe cards. Makes perfect sense.

Specifically looking at the `e_irq` path within `ccp5_init`, this is reached only if there are failures in thread creation, RNG registration, or DMA engine registration that occur after the IRQ request during the hardware probe for AMD CCP v5. Given that this hardware isn't present in QEMU or GCE, nor emulated, neither `ccp5_init` nor `ccp5_destroy` can ever be executed in those environments. Consequently, any attempt to fuzz them in the syzkaller environment is futile.

Therefore, to confirm this, I need to verify that syzkaller, or even QEMU, doesn't include any AMD CCP emulation or any kind of virtual or software emulation for this device in the Linux kernel. I'll search for terms like "ccp," "ccp5," or any related mock drivers to ensure this.

{
  "Expression": "ccp5_actions",
  "PathPrefix": "drivers/crypto/ccp"
}

{
  "Output": "drivers/crypto/ccp/ccp-dev-v5.c=1075=static void ccp5other_config(struct ccp_device *ccp)\n--\ndrivers/crypto/ccp/ccp-dev-v5.c-1101-/* Version 5 adds some function, but is essentially the same as v5 */\ndrivers/crypto/ccp/ccp-dev-v5.c:1102:static const struct ccp_actions ccp5_actions = {\ndrivers/crypto/ccp/ccp-dev-v5.c-1103-\t.aes = ccp5_perform_aes,\n--\ndrivers/crypto/ccp/ccp-dev-v5.c=1117=const struct ccp_vdata ccpv5a = {\n--\ndrivers/crypto/ccp/ccp-dev-v5.c-1119-\t.setup = ccp5_config,\ndrivers/crypto/ccp/ccp-dev-v5.c:1120:\t.perform = \u0026ccp5_actions,\ndrivers/crypto/ccp/ccp-dev-v5.c-1121-\t.offset = 0x0,\n--\ndrivers/crypto/ccp/ccp-dev-v5.c=1125=const struct ccp_vdata ccpv5b = {\n--\ndrivers/crypto/ccp/ccp-dev-v5.c-1128-\t.setup = ccp5other_config,\ndrivers/crypto/ccp/ccp-dev-v5.c:1129:\t.perform = \u0026ccp5_actions,\ndrivers/crypto/ccp/ccp-dev-v5.c-1130-\t.offset = 0x0,\n"
}

gemini-3.8-flash

null

null

							input: 42501
							output: 32
							thoughts: 17
						

Okay, here's the summary, assuming I'm a seasoned professional, and keeping in mind the need to provide a complete "thought process" summary:

**Thinking About the Context of `ccpv5a` and `ccpv5b`**

Alright, so the question is where are `ccpv5a` and `ccpv5b` actually *used*? This isn't just a trivial lookup; it's about understanding their role, their scope, and their impact within the broader system. I need to figure out the context of those variable names in the broader scheme of things.

First, I need to know the origin. Are these legacy variables? Are they recent additions? Knowing the project lifecycle of these components is crucial. What codebases or configuration files are they embedded in? Are these related to the data structures or are they the identifiers themselves?

Then, the second question is the nature of their use. Are they used as input parameters, output parameters, control flags, or something else entirely? A simple grep would give me that in no time, and the more accurate search, the faster and better the answer. Are they locally scoped, or are they referenced across multiple modules or components? If they're inter-component, that's a *significant* clue to their importance. Are there any dependencies?

Third, what are the *implications* of their values? Do they trigger specific behaviors? Are they associated with critical calculations or decisions? Understanding their functional role is key. Is there any documentation related to these variables, even if it's informal?

Finally, are `ccpv5a` and `ccpv5b` used in parallel or in series? Knowing their relationship to one another might also be critical. Are there any naming conventions to which they adhere?

So, in summary, this isn't just about finding the text strings, it's about understanding the *meaning* and *impact* of those identifiers within the system. That's the only way to get a truly useful answer.

{
  "Expression": "ccpv5[ab]",
  "PathPrefix": "drivers/crypto/ccp"
}

{
  "Output": "drivers/crypto/ccp/ccp-dev-v5.c=1102=static const struct ccp_actions ccp5_actions = {\n--\ndrivers/crypto/ccp/ccp-dev-v5.c-1116-\ndrivers/crypto/ccp/ccp-dev-v5.c:1117:const struct ccp_vdata ccpv5a = {\ndrivers/crypto/ccp/ccp-dev-v5.c-1118-\t.version = CCP_VERSION(5, 0),\n--\ndrivers/crypto/ccp/ccp-dev-v5.c-1124-\ndrivers/crypto/ccp/ccp-dev-v5.c:1125:const struct ccp_vdata ccpv5b = {\ndrivers/crypto/ccp/ccp-dev-v5.c-1126-\t.version = CCP_VERSION(5, 0),\n--\ndrivers/crypto/ccp/ccp-dev.h=669=extern const struct ccp_vdata ccpv3;\ndrivers/crypto/ccp/ccp-dev.h:670:extern const struct ccp_vdata ccpv5a;\ndrivers/crypto/ccp/ccp-dev.h:671:extern const struct ccp_vdata ccpv5b;\ndrivers/crypto/ccp/ccp-dev.h-672-\n--\ndrivers/crypto/ccp/sp-pci.c=482=static const struct sp_dev_vdata dev_vdata[] = {\n--\ndrivers/crypto/ccp/sp-pci.c-491-#ifdef CONFIG_CRYPTO_DEV_SP_CCP\ndrivers/crypto/ccp/sp-pci.c:492:\t\t.ccp_vdata = \u0026ccpv5a,\ndrivers/crypto/ccp/sp-pci.c-493-#endif\n--\ndrivers/crypto/ccp/sp-pci.c-500-#ifdef CONFIG_CRYPTO_DEV_SP_CCP\ndrivers/crypto/ccp/sp-pci.c:501:\t\t.ccp_vdata = \u0026ccpv5b,\ndrivers/crypto/ccp/sp-pci.c-502-#endif\n--\ndrivers/crypto/ccp/sp-pci.c-506-#ifdef CONFIG_CRYPTO_DEV_SP_CCP\ndrivers/crypto/ccp/sp-pci.c:507:\t\t.ccp_vdata = \u0026ccpv5a,\ndrivers/crypto/ccp/sp-pci.c-508-#endif\n--\ndrivers/crypto/ccp/sp-pci.c-515-#ifdef CONFIG_CRYPTO_DEV_SP_CCP\ndrivers/crypto/ccp/sp-pci.c:516:\t\t.ccp_vdata = \u0026ccpv5a,\ndrivers/crypto/ccp/sp-pci.c-517-#endif\n"
}

gemini-3.8-flash

null

null

							input: 43715
							output: 152
							thoughts: 338
						

**My Assessment: No Fuzzing Required Here**

Okay, so the code in question, specifically within `sp-pci.c`, is the PCI driver for AMD's PSP/CCP hardware. Crucially, it seems like the only place `ccpv5a` and `ccpv5b` are even referenced is within the `dev_vdata` struct *in* `sp-pci.c`. This is important, because this driver is *only* instantiated when physical AMD hardware with specific PCI device IDs is present. Standard QEMU or GCE VMs don't emulate this particular AMD CCP PCI hardware. So, right off the bat, I have a strong hunch.

Looking more closely at the patch, the changes are limited to a couple of specific areas. First, `ccp5_destroy()`, which is a driver teardown function, is only called during a PCI remove event or system shutdown. Second, the changes include an error rollback path, `e_irq`, within `ccp5_init()`, which would *only* be executed if subsequent initialization fails during probe.

These scenarios clearly fit Section 2, specifically both the "Structurally unreachable hardware" and "Unreachable execution paths" categories. We're talking about code that is either related to hardware that isn't emulated in standard virtual machines, or execution paths only triggered by hardware removal or failure *after* initialization.

Therefore, I'm confident that `WorthFuzzing` should be set to `false`. Let's just double-check to be absolutely certain...

Okay, let's summarize:
*   `WorthFuzzing`: false
*   `EnableConfigs`: \[ ]
*   `FocusSymbols`: \[ ]
*   `Reasoning`: Concise, but explicit in my reasoning.

Confirmed. Everything looks sound.

{
  "EnableConfigs": [],
  "FocusSymbols": [],
  "Reasoning": "The patch modifies error unwinding in ccp5_init() and cleanup in ccp5_destroy() within the AMD Cryptographic Coprocessor (CCP v5) driver (drivers/crypto/ccp/ccp-dev-v5.c). This driver requires specific physical AMD Secure Processor / CCP PCI hardware (vendor-specific ASIC) that is not emulated in standard virtualized environments (QEMU/GCE). Additionally, the changes reside exclusively in probe error unwinding and driver removal/teardown paths. Therefore, the modified code is structurally unreachable for fuzzing.",
  "WorthFuzzing": false
}

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch modifies error unwinding in ccp5_init() and cleanup in ccp5_destroy() within the AMD Cryptographic Coprocessor (CCP v5) driver (drivers/crypto/ccp/ccp-dev-v5.c). This driver requires specific physical AMD Secure Processor / CCP PCI hardware (vendor-specific ASIC) that is not emulated in standard virtualized environments (QEMU/GCE). Additionally, the changes reside exclusively in probe error unwinding and driver removal/teardown paths. Therefore, the modified code is structurally unreachable for fuzzing.",
  "WorthFuzzing": false
}

{
  "WorthFuzzing": false
}

null