drivers/scsi/isci/probe_roms.h

Source file repositories/reference/linux-study-clean/drivers/scsi/isci/probe_roms.h

File Facts

System
Linux kernel
Corpus path
drivers/scsi/isci/probe_roms.h
Extension
.h
Size
10776 bytes
Lines
331
Domain
Driver Families
Bucket
drivers/scsi
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct sci_user_parameters {
	struct sci_phy_user_params {
		/**
		 * This field specifies the NOTIFY (ENABLE SPIN UP) primitive
		 * insertion frequency for this phy index.
		 */
		u32 notify_enable_spin_up_insertion_frequency;

		/**
		 * This method specifies the number of transmitted DWORDs within which
		 * to transmit a single ALIGN primitive.  This value applies regardless
		 * of what type of device is attached or connection state.  A value of
		 * 0 indicates that no ALIGN primitives will be inserted.
		 */
		u16 align_insertion_frequency;

		/**
		 * This method specifies the number of transmitted DWORDs within which
		 * to transmit 2 ALIGN primitives.  This applies for SAS connections
		 * only.  A minimum value of 3 is required for this field.
		 */
		u16 in_connection_align_insertion_frequency;

		/**
		 * This field indicates the maximum speed generation to be utilized
		 * by phys in the supplied port.
		 * - A value of 1 indicates generation 1 (i.e. 1.5 Gb/s).
		 * - A value of 2 indicates generation 2 (i.e. 3.0 Gb/s).
		 * - A value of 3 indicates generation 3 (i.e. 6.0 Gb/s).
		 */
		u8 max_speed_generation;

	} phys[SCI_MAX_PHYS];

	/**
	 * This field specifies the maximum number of direct attached devices
	 * that can have power supplied to them simultaneously.
	 */
	u8 max_concurr_spinup;

	/**
	 * This field specifies the number of seconds to allow a phy to consume
	 * power before yielding to another phy.
	 *
	 */
	u8 phy_spin_up_delay_interval;

	/**
	 * These timer values specifies how long a link will remain open with no
	 * activity in increments of a microsecond, it can be in increments of
	 * 100 microseconds if the upper most bit is set.
	 *
	 */
	u16 stp_inactivity_timeout;
	u16 ssp_inactivity_timeout;

	/**
	 * These timer values specifies how long a link will remain open in increments
	 * of 100 microseconds.
	 *
	 */
	u16 stp_max_occupancy_timeout;
	u16 ssp_max_occupancy_timeout;

	/**
	 * This timer value specifies how long a link will remain open with no
	 * outbound traffic in increments of a microsecond.
	 *
	 */
	u8 no_outbound_task_timeout;

};

#define SCIC_SDS_PARM_PHY_MASK_MIN 0x0
#define SCIC_SDS_PARM_PHY_MASK_MAX 0xF
#define MAX_CONCURRENT_DEVICE_SPIN_UP_COUNT 4

struct sci_oem_params;
int sci_oem_parameters_validate(struct sci_oem_params *oem, u8 version);

struct isci_orom;
struct isci_orom *isci_request_oprom(struct pci_dev *pdev);
struct isci_orom *isci_request_firmware(struct pci_dev *pdev, const struct firmware *fw);
struct isci_orom *isci_get_efi_var(struct pci_dev *pdev);

struct isci_oem_hdr {
	u8 sig[4];
	u8 rev_major;
	u8 rev_minor;
	u16 len;

Annotation

Implementation Notes