rapidio: add query_mport operation (8b189fdb) · Commits · e / devices / android_kernel_fairphone_FP3

drivers/rapidio/rio.c

+17 −0

Original line number	Original line	Diff line number	Diff line
	@@ -67,6 +67,23 @@ u16 rio_local_get_device_id(struct rio_mport *port)
	return (RIO_GET_DID(port->sys_size, result));		return (RIO_GET_DID(port->sys_size, result));
	}		}

			/**
			* rio_query_mport - Query mport device attributes
			* @port: mport device to query
			* @mport_attr: mport attributes data structure
			*
			* Returns attributes of specified mport through the
			* pointer to attributes data structure.
			*/
			int rio_query_mport(struct rio_mport *port,
			struct rio_mport_attr *mport_attr)
			{
			if (!port->ops->query_mport)
			return -ENODATA;
			return port->ops->query_mport(port, mport_attr);
			}
			EXPORT_SYMBOL(rio_query_mport);

	/**		/**
	* rio_add_device- Adds a RIO device to the device model		* rio_add_device- Adds a RIO device to the device model
	* @rdev: RIO device		* @rdev: RIO device

include/linux/rio.h

+49 −0

Original line number	Original line	Diff line number	Diff line
	@@ -314,6 +314,50 @@ struct rio_net {
	struct rio_id_table destid_table; /* destID allocation table */		struct rio_id_table destid_table; /* destID allocation table */
	};		};

			enum rio_link_speed {
			RIO_LINK_DOWN = 0, /* SRIO Link not initialized */
			RIO_LINK_125 = 1, /* 1.25 GBaud */
			RIO_LINK_250 = 2, /* 2.5 GBaud */
			RIO_LINK_312 = 3, /* 3.125 GBaud */
			RIO_LINK_500 = 4, /* 5.0 GBaud */
			RIO_LINK_625 = 5 /* 6.25 GBaud */
			};

			enum rio_link_width {
			RIO_LINK_1X = 0,
			RIO_LINK_1XR = 1,
			RIO_LINK_2X = 3,
			RIO_LINK_4X = 2,
			RIO_LINK_8X = 4,
			RIO_LINK_16X = 5
			};

			enum rio_mport_flags {
			RIO_MPORT_DMA = (1 << 0), /* supports DMA data transfers */
			RIO_MPORT_DMA_SG = (1 << 1), /* DMA supports HW SG mode */
			RIO_MPORT_IBSG = (1 << 2), /* inbound mapping supports SG */
			};

			/**
			* struct rio_mport_attr - RIO mport device attributes
			* @flags: mport device capability flags
			* @link_speed: SRIO link speed value (as defined by RapidIO specification)
			* @link_width: SRIO link width value (as defined by RapidIO specification)
			* @dma_max_sge: number of SG list entries that can be handled by DMA channel(s)
			* @dma_max_size: max number of bytes in single DMA transfer (SG entry)
			* @dma_align: alignment shift for DMA operations (as for other DMA operations)
			*/
			struct rio_mport_attr {
			int flags;
			int link_speed;
			int link_width;

			/* DMA capability info: valid only if RIO_MPORT_DMA flag is set */
			int dma_max_sge;
			int dma_max_size;
			int dma_align;
			};

	/* Low-level architecture-dependent routines */		/* Low-level architecture-dependent routines */

	/**		/**
	@@ -333,6 +377,7 @@ struct rio_net {
	* @get_inb_message: Callback to get a message from an inbound mailbox queue.		* @get_inb_message: Callback to get a message from an inbound mailbox queue.
	* @map_inb: Callback to map RapidIO address region into local memory space.		* @map_inb: Callback to map RapidIO address region into local memory space.
	* @unmap_inb: Callback to unmap RapidIO address region mapped with map_inb().		* @unmap_inb: Callback to unmap RapidIO address region mapped with map_inb().
			* @query_mport: Callback to query mport device attributes.
	*/		*/
	struct rio_ops {		struct rio_ops {
	int (lcread) (struct rio_mport mport, int index, u32 offset, int len,		int (lcread) (struct rio_mport mport, int index, u32 offset, int len,
	@@ -358,6 +403,8 @@ struct rio_ops {
	int (map_inb)(struct rio_mport mport, dma_addr_t lstart,		int (map_inb)(struct rio_mport mport, dma_addr_t lstart,
	u64 rstart, u32 size, u32 flags);		u64 rstart, u32 size, u32 flags);
	void (unmap_inb)(struct rio_mport mport, dma_addr_t lstart);		void (unmap_inb)(struct rio_mport mport, dma_addr_t lstart);
			int (query_mport)(struct rio_mport mport,
			struct rio_mport_attr *attr);
	};		};

	#define RIO_RESOURCE_MEM 0x00000100		#define RIO_RESOURCE_MEM 0x00000100
	@@ -481,5 +528,7 @@ extern int rio_open_inb_mbox(struct rio_mport , void , int, int);
	extern void rio_close_inb_mbox(struct rio_mport *, int);		extern void rio_close_inb_mbox(struct rio_mport *, int);
	extern int rio_open_outb_mbox(struct rio_mport , void , int, int);		extern int rio_open_outb_mbox(struct rio_mport , void , int, int);
	extern void rio_close_outb_mbox(struct rio_mport *, int);		extern void rio_close_outb_mbox(struct rio_mport *, int);
			extern int rio_query_mport(struct rio_mport *port,
			struct rio_mport_attr *mport_attr);

	#endif /* LINUX_RIO_H */		#endif /* LINUX_RIO_H */

include/linux/rio_regs.h

+3 −0

Original line number	Original line	Diff line number	Diff line
	@@ -238,6 +238,8 @@
	#define RIO_PORT_N_ACK_INBOUND 0x3f000000		#define RIO_PORT_N_ACK_INBOUND 0x3f000000
	#define RIO_PORT_N_ACK_OUTSTAND 0x00003f00		#define RIO_PORT_N_ACK_OUTSTAND 0x00003f00
	#define RIO_PORT_N_ACK_OUTBOUND 0x0000003f		#define RIO_PORT_N_ACK_OUTBOUND 0x0000003f
			#define RIO_PORT_N_CTL2_CSR(x) (0x0054 + x*0x20)
			#define RIO_PORT_N_CTL2_SEL_BAUD 0xf0000000
	#define RIO_PORT_N_ERR_STS_CSR(x) (0x0058 + x*0x20)		#define RIO_PORT_N_ERR_STS_CSR(x) (0x0058 + x*0x20)
	#define RIO_PORT_N_ERR_STS_PW_OUT_ES 0x00010000 /* Output Error-stopped */		#define RIO_PORT_N_ERR_STS_PW_OUT_ES 0x00010000 /* Output Error-stopped */
	#define RIO_PORT_N_ERR_STS_PW_INP_ES 0x00000100 /* Input Error-stopped */		#define RIO_PORT_N_ERR_STS_PW_INP_ES 0x00000100 /* Input Error-stopped */
	@@ -249,6 +251,7 @@
	#define RIO_PORT_N_CTL_PWIDTH 0xc0000000		#define RIO_PORT_N_CTL_PWIDTH 0xc0000000
	#define RIO_PORT_N_CTL_PWIDTH_1 0x00000000		#define RIO_PORT_N_CTL_PWIDTH_1 0x00000000
	#define RIO_PORT_N_CTL_PWIDTH_4 0x40000000		#define RIO_PORT_N_CTL_PWIDTH_4 0x40000000
			#define RIO_PORT_N_CTL_IPW 0x38000000 /* Initialized Port Width */
	#define RIO_PORT_N_CTL_P_TYP_SER 0x00000001		#define RIO_PORT_N_CTL_P_TYP_SER 0x00000001
	#define RIO_PORT_N_CTL_LOCKOUT 0x00000002		#define RIO_PORT_N_CTL_LOCKOUT 0x00000002
	#define RIO_PORT_N_CTL_EN_RX_SER 0x00200000		#define RIO_PORT_N_CTL_EN_RX_SER 0x00200000