aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/pci.h
diff options
context:
space:
mode:
authorTejun Heo <htejun@gmail.com>2007-01-20 16:00:26 +0900
committerJeff Garzik <jeff@garzik.org>2007-02-09 17:39:36 -0500
commit9ac7849e35f705830f7b016ff272b0ff1f7ff759 (patch)
tree7f17cdff87e154937a15cc2ec8da9b4e6018ce8e /include/linux/pci.h
parent77a527eadb425b60db3f5f0aae6a4c51c38e35e5 (diff)
downloadkernel_samsung_smdk4412-9ac7849e35f705830f7b016ff272b0ff1f7ff759.zip
kernel_samsung_smdk4412-9ac7849e35f705830f7b016ff272b0ff1f7ff759.tar.gz
kernel_samsung_smdk4412-9ac7849e35f705830f7b016ff272b0ff1f7ff759.tar.bz2
devres: device resource management
Implement device resource management, in short, devres. A device driver can allocate arbirary size of devres data which is associated with a release function. On driver detach, release function is invoked on the devres data, then, devres data is freed. devreses are typed by associated release functions. Some devreses are better represented by single instance of the type while others need multiple instances sharing the same release function. Both usages are supported. devreses can be grouped using devres group such that a device driver can easily release acquired resources halfway through initialization or selectively release resources (e.g. resources for port 1 out of 4 ports). This patch adds devres core including documentation and the following managed interfaces. * alloc/free : devm_kzalloc(), devm_kzfree() * IO region : devm_request_region(), devm_release_region() * IRQ : devm_request_irq(), devm_free_irq() * DMA : dmam_alloc_coherent(), dmam_free_coherent(), dmam_declare_coherent_memory(), dmam_pool_create(), dmam_pool_destroy() * PCI : pcim_enable_device(), pcim_pin_device(), pci_is_managed() * iomap : devm_ioport_map(), devm_ioport_unmap(), devm_ioremap(), devm_ioremap_nocache(), devm_iounmap(), pcim_iomap_table(), pcim_iomap(), pcim_iounmap() Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'include/linux/pci.h')
-rw-r--r--include/linux/pci.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 805412c..9e3042e 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -167,6 +167,7 @@ struct pci_dev {
unsigned int broken_parity_status:1; /* Device generates false positive parity */
unsigned int msi_enabled:1;
unsigned int msix_enabled:1;
+ unsigned int is_managed:1;
atomic_t enable_cnt; /* pci_enable_device has been called */
u32 saved_config_space[16]; /* config space saved at suspend time */
@@ -528,6 +529,14 @@ static inline int pci_write_config_dword(struct pci_dev *dev, int where, u32 val
int __must_check pci_enable_device(struct pci_dev *dev);
int __must_check pci_enable_device_bars(struct pci_dev *dev, int mask);
+int __must_check pcim_enable_device(struct pci_dev *pdev);
+void pcim_pin_device(struct pci_dev *pdev);
+
+static inline int pci_is_managed(struct pci_dev *pdev)
+{
+ return pdev->is_managed;
+}
+
void pci_disable_device(struct pci_dev *dev);
void pci_set_master(struct pci_dev *dev);
#define HAVE_PCI_SET_MWI