drivers/pci/controller/pcie-iproc.h

Source file repositories/reference/linux-study-clean/drivers/pci/controller/pcie-iproc.h

File Facts

System
Linux kernel
Corpus path
drivers/pci/controller/pcie-iproc.h
Extension
.h
Size
4097 bytes
Lines
132
Domain
Representative Device Path
Bucket
PCIe NVMe Storage Path
Inferred role
Representative Device Path: implementation source
Status
source implementation candidate

Why This File Exists

Part of the selected hardware vertical slice: PCI discovery, driver binding, NVMe queues, block requests, DMA, interrupts, and completion.

Dependency Surface

Detected Declarations

Annotated Snippet

struct iproc_pcie_ob {
	resource_size_t axi_offset;
	unsigned int nr_windows;
};

/**
 * struct iproc_pcie_ib - iProc PCIe inbound mapping
 * @nr_regions: total number of supported inbound mapping regions
 */
struct iproc_pcie_ib {
	unsigned int nr_regions;
};

struct iproc_pcie_ob_map;
struct iproc_pcie_ib_map;
struct iproc_msi;

/**
 * struct iproc_pcie - iProc PCIe device
 * @dev: pointer to device data structure
 * @type: iProc PCIe interface type
 * @reg_offsets: register offsets
 * @base: PCIe host controller I/O register base
 * @base_addr: PCIe host controller register base physical address
 * @mem: host bridge memory window resource
 * @phy: optional PHY device that controls the Serdes
 * @map_irq: function callback to map interrupts
 * @ep_is_internal: indicates an internal emulated endpoint device is connected
 * @iproc_cfg_read: indicates the iProc config read function should be used
 * @rej_unconfig_pf: indicates the root complex needs to detect and reject
 * enumeration against unconfigured physical functions emulated in the ASIC
 * @has_apb_err_disable: indicates the controller can be configured to prevent
 * unsupported request from being forwarded as an APB bus error
 * @fix_paxc_cap: indicates the controller has corrupted capability list in its
 * config space registers and requires SW based fixup
 *
 * @need_ob_cfg: indicates SW needs to configure the outbound mapping window
 * @ob: outbound mapping related parameters
 * @ob_map: outbound mapping related parameters specific to the controller
 *
 * @need_ib_cfg: indicates SW needs to configure the inbound mapping window
 * @ib: inbound mapping related parameters
 * @ib_map: outbound mapping region related parameters
 *
 * @need_msi_steer: indicates additional configuration of the iProc PCIe
 * controller is required to steer MSI writes to external interrupt controller
 * @msi: MSI data
 */
struct iproc_pcie {
	struct device *dev;
	enum iproc_pcie_type type;
	u16 *reg_offsets;
	void __iomem *base;
	phys_addr_t base_addr;
	struct resource mem;
	struct phy *phy;
	int (*map_irq)(const struct pci_dev *, u8, u8);
	bool ep_is_internal;
	bool iproc_cfg_read;
	bool rej_unconfig_pf;
	bool has_apb_err_disable;
	bool fix_paxc_cap;

	bool need_ob_cfg;
	struct iproc_pcie_ob ob;
	const struct iproc_pcie_ob_map *ob_map;

	bool need_ib_cfg;
	struct iproc_pcie_ib ib;
	const struct iproc_pcie_ib_map *ib_map;

	bool need_msi_steer;
	struct iproc_msi *msi;
};

int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res);
void iproc_pcie_remove(struct iproc_pcie *pcie);
int iproc_pcie_shutdown(struct iproc_pcie *pcie);

#ifdef CONFIG_PCIE_IPROC_MSI
int iproc_msi_init(struct iproc_pcie *pcie, struct device_node *node);
void iproc_msi_exit(struct iproc_pcie *pcie);
#else
static inline int iproc_msi_init(struct iproc_pcie *pcie,
				 struct device_node *node)
{
	return -ENODEV;
}
static inline void iproc_msi_exit(struct iproc_pcie *pcie)
{

Annotation

Implementation Notes