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// SPDX-License-Identifier: GPL-2.0 AND MIT
/*
* Copyright © 2023 Intel Corporation
*/
#include "tests/xe_pci_test.h"
#include "tests/xe_test.h"
#include <kunit/test-bug.h>
#include <kunit/test.h>
#include <kunit/test-bug.h>
#include <kunit/visibility.h>
struct kunit_test_data {
int ndevs;
xe_device_fn xe_fn;
};
static int dev_to_xe_device_fn(struct device *dev, void *__data)
{
struct drm_device *drm = dev_get_drvdata(dev);
struct kunit_test_data *data = __data;
int ret = 0;
int idx;
data->ndevs++;
if (drm_dev_enter(drm, &idx))
ret = data->xe_fn(to_xe_device(dev_get_drvdata(dev)));
drm_dev_exit(idx);
return ret;
}
/**
* xe_call_for_each_device - Iterate over all devices this driver binds to
* @xe_fn: Function to call for each device.
*
* This function iterated over all devices this driver binds to, and calls
* @xe_fn: for each one of them. If the called function returns anything else
* than 0, iteration is stopped and the return value is returned by this
* function. Across each function call, drm_dev_enter() / drm_dev_exit() is
* called for the corresponding drm device.
*
* Return: Number of devices iterated or
* the error code of a call to @xe_fn returning an error code.
*/
int xe_call_for_each_device(xe_device_fn xe_fn)
{
int ret;
struct kunit_test_data data = {
.xe_fn = xe_fn,
.ndevs = 0,
};
ret = driver_for_each_device(&xe_pci_driver.driver, NULL,
&data, dev_to_xe_device_fn);
if (!data.ndevs)
kunit_skip(current->kunit_test, "test runs only on hardware\n");
return ret ?: data.ndevs;
}
/**
* xe_call_for_each_graphics_ip - Iterate over all recognized graphics IPs
* @xe_fn: Function to call for each device.
*
* This function iterates over the descriptors for all graphics IPs recognized
* by the driver and calls @xe_fn: for each one of them.
*/
void xe_call_for_each_graphics_ip(xe_graphics_fn xe_fn)
{
const struct xe_graphics_desc *ip, *last = NULL;
for (int i = 0; i < ARRAY_SIZE(graphics_ip_map); i++) {
ip = graphics_ip_map[i].ip;
if (ip == last)
continue;
xe_fn(ip);
last = ip;
}
}
EXPORT_SYMBOL_IF_KUNIT(xe_call_for_each_graphics_ip);
/**
* xe_call_for_each_media_ip - Iterate over all recognized media IPs
* @xe_fn: Function to call for each device.
*
* This function iterates over the descriptors for all media IPs recognized
* by the driver and calls @xe_fn: for each one of them.
*/
void xe_call_for_each_media_ip(xe_media_fn xe_fn)
{
const struct xe_media_desc *ip, *last = NULL;
for (int i = 0; i < ARRAY_SIZE(media_ip_map); i++) {
ip = media_ip_map[i].ip;
if (ip == last)
continue;
xe_fn(ip);
last = ip;
}
}
EXPORT_SYMBOL_IF_KUNIT(xe_call_for_each_media_ip);
static void fake_read_gmdid(struct xe_device *xe, enum xe_gmdid_type type,
u32 *ver, u32 *revid)
{
struct kunit *test = kunit_get_current_test();
struct xe_pci_fake_data *data = test->priv;
if (type == GMDID_MEDIA) {
*ver = data->media_verx100;
*revid = xe_step_to_gmdid(data->media_step);
} else {
*ver = data->graphics_verx100;
*revid = xe_step_to_gmdid(data->graphics_step);
}
}
int xe_pci_fake_device_init(struct xe_device *xe)
{
struct kunit *test = kunit_get_current_test();
struct xe_pci_fake_data *data = test->priv;
const struct pci_device_id *ent = pciidlist;
const struct xe_device_desc *desc;
const struct xe_subplatform_desc *subplatform_desc;
if (!data) {
desc = (const void *)ent->driver_data;
subplatform_desc = NULL;
goto done;
}
for (ent = pciidlist; ent->device; ent++) {
desc = (const void *)ent->driver_data;
if (desc->platform == data->platform)
break;
}
if (!ent->device)
return -ENODEV;
for (subplatform_desc = desc->subplatforms;
subplatform_desc && subplatform_desc->subplatform;
subplatform_desc++)
if (subplatform_desc->subplatform == data->subplatform)
break;
if (data->subplatform != XE_SUBPLATFORM_NONE && !subplatform_desc)
return -ENODEV;
done:
xe->sriov.__mode = data && data->sriov_mode ?
data->sriov_mode : XE_SRIOV_MODE_NONE;
kunit_activate_static_stub(test, read_gmdid, fake_read_gmdid);
xe_info_init_early(xe, desc, subplatform_desc);
xe_info_init(xe, desc->graphics, desc->media);
return 0;
}
EXPORT_SYMBOL_IF_KUNIT(xe_pci_fake_device_init);
/**
* xe_pci_live_device_gen_param - Helper to iterate Xe devices as KUnit parameters
* @prev: the previously returned value, or NULL for the first iteration
* @desc: the buffer for a parameter name
*
* Iterates over the available Xe devices on the system. Uses the device name
* as the parameter name.
*
* To be used only as a parameter generator function in &KUNIT_CASE_PARAM.
*
* Return: pointer to the next &struct xe_device ready to be used as a parameter
* or NULL if there are no more Xe devices on the system.
*/
const void *xe_pci_live_device_gen_param(const void *prev, char *desc)
{
const struct xe_device *xe = prev;
struct device *dev = xe ? xe->drm.dev : NULL;
struct device *next;
next = driver_find_next_device(&xe_pci_driver.driver, dev);
if (dev)
put_device(dev);
if (!next)
return NULL;
snprintf(desc, KUNIT_PARAM_DESC_SIZE, "%s", dev_name(next));
return pdev_to_xe_device(to_pci_dev(next));
}
EXPORT_SYMBOL_IF_KUNIT(xe_pci_live_device_gen_param);
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