From 297b60346df8beafee954a0fd7c2d64f33f3b9bc Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 11 May 2024 01:44:05 +0000
Subject: [PATCH] rtl8211F_led_control
---
kernel/drivers/pci/endpoint/pci-epf-core.c | 53 +++++++++++++++++++++++++++--------------------------
1 files changed, 27 insertions(+), 26 deletions(-)
diff --git a/kernel/drivers/pci/endpoint/pci-epf-core.c b/kernel/drivers/pci/endpoint/pci-epf-core.c
index 825fa24..c977cf9 100644
--- a/kernel/drivers/pci/endpoint/pci-epf-core.c
+++ b/kernel/drivers/pci/endpoint/pci-epf-core.c
@@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
-/**
+/*
* PCI Endpoint *Function* (EPF) library
*
* Copyright (C) 2017 Texas Instruments
@@ -21,26 +21,6 @@
static const struct device_type pci_epf_type;
/**
- * pci_epf_linkup() - Notify the function driver that EPC device has
- * established a connection with the Root Complex.
- * @epf: the EPF device bound to the EPC device which has established
- * the connection with the host
- *
- * Invoke to notify the function driver that EPC device has established
- * a connection with the Root Complex.
- */
-void pci_epf_linkup(struct pci_epf *epf)
-{
- if (!epf->driver) {
- dev_WARN(&epf->dev, "epf device not bound to driver\n");
- return;
- }
-
- epf->driver->ops->linkup(epf);
-}
-EXPORT_SYMBOL_GPL(pci_epf_linkup);
-
-/**
* pci_epf_unbind() - Notify the function driver that the binding between the
* EPF device and EPC device has been lost
* @epf: the EPF device which has lost the binding with the EPC device
@@ -55,7 +35,9 @@
return;
}
+ mutex_lock(&epf->lock);
epf->driver->ops->unbind(epf);
+ mutex_unlock(&epf->lock);
module_put(epf->driver->owner);
}
EXPORT_SYMBOL_GPL(pci_epf_unbind);
@@ -69,6 +51,8 @@
*/
int pci_epf_bind(struct pci_epf *epf)
{
+ int ret;
+
if (!epf->driver) {
dev_WARN(&epf->dev, "epf device not bound to driver\n");
return -EINVAL;
@@ -77,12 +61,17 @@
if (!try_module_get(epf->driver->owner))
return -EAGAIN;
- return epf->driver->ops->bind(epf);
+ mutex_lock(&epf->lock);
+ ret = epf->driver->ops->bind(epf);
+ mutex_unlock(&epf->lock);
+
+ return ret;
}
EXPORT_SYMBOL_GPL(pci_epf_bind);
/**
* pci_epf_free_space() - free the allocated PCI EPF register space
+ * @epf: the EPF device from whom to free the memory
* @addr: the virtual address of the PCI EPF register space
* @bar: the BAR number corresponding to the register space
*
@@ -99,6 +88,7 @@
epf->bar[bar].phys_addr);
epf->bar[bar].phys_addr = 0;
+ epf->bar[bar].addr = NULL;
epf->bar[bar].size = 0;
epf->bar[bar].barno = 0;
epf->bar[bar].flags = 0;
@@ -107,12 +97,15 @@
/**
* pci_epf_alloc_space() - allocate memory for the PCI EPF register space
+ * @epf: the EPF device to whom allocate the memory
* @size: the size of the memory that has to be allocated
* @bar: the BAR number corresponding to the allocated register space
+ * @align: alignment size for the allocation region
*
* Invoke to allocate memory for the PCI EPF register space.
*/
-void *pci_epf_alloc_space(struct pci_epf *epf, size_t size, enum pci_barno bar)
+void *pci_epf_alloc_space(struct pci_epf *epf, size_t size, enum pci_barno bar,
+ size_t align)
{
void *space;
struct device *dev = epf->epc->dev.parent;
@@ -120,7 +113,11 @@
if (size < 128)
size = 128;
- size = roundup_pow_of_two(size);
+
+ if (align)
+ size = ALIGN(size, align);
+ else
+ size = roundup_pow_of_two(size);
space = dma_alloc_coherent(dev, size, &phys_addr, GFP_KERNEL);
if (!space) {
@@ -129,9 +126,12 @@
}
epf->bar[bar].phys_addr = phys_addr;
+ epf->bar[bar].addr = space;
epf->bar[bar].size = size;
epf->bar[bar].barno = bar;
- epf->bar[bar].flags = PCI_BASE_ADDRESS_SPACE_MEMORY;
+ epf->bar[bar].flags |= upper_32_bits(size) ?
+ PCI_BASE_ADDRESS_MEM_TYPE_64 :
+ PCI_BASE_ADDRESS_MEM_TYPE_32;
return space;
}
@@ -206,7 +206,7 @@
if (!driver->ops)
return -EINVAL;
- if (!driver->ops->bind || !driver->ops->unbind || !driver->ops->linkup)
+ if (!driver->ops->bind || !driver->ops->unbind)
return -EINVAL;
driver->driver.bus = &pci_epf_bus_type;
@@ -264,6 +264,7 @@
device_initialize(dev);
dev->bus = &pci_epf_bus_type;
dev->type = &pci_epf_type;
+ mutex_init(&epf->lock);
ret = dev_set_name(dev, "%s", name);
if (ret) {
--
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