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linux/drivers/net/vxge/vxge-config.h
Jon Mason 4d2a5b406c vxge: Wait for Rx to become idle before reseting or closing 
Wait for the receive traffic to become idle before attempting to close
or reset the adapter.  To enable the processing of packets while Receive
Idle, move the clearing of __VXGE_STATE_CARD_UP bit in vxge_close to
after it.  Also, modify the return value of the ISR when the adapter is
down to IRQ_HANDLED.  Otherwise there are unhandled interrupts for the
device.

Signed-off-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: Ram Vepa <ram.vepa@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-11 09:30:19 -08:00

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/******************************************************************************
* This software may be used and distributed according to the terms of
* the GNU General Public License (GPL), incorporated herein by reference.
* Drivers based on or derived from this code fall under the GPL and must
* retain the authorship, copyright and license notice. This file is not
* a complete program and may only be used when the entire operating
* system is licensed under the GPL.
* See the file COPYING in this distribution for more information.
*
* vxge-config.h: Driver for Exar Corp's X3100 Series 10GbE PCIe I/O
* Virtualized Server Adapter.
* Copyright(c) 2002-2010 Exar Corp.
******************************************************************************/
#ifndef VXGE_CONFIG_H
#define VXGE_CONFIG_H
#include <linux/list.h>
#include <linux/slab.h>
#ifndef VXGE_CACHE_LINE_SIZE
#define VXGE_CACHE_LINE_SIZE 128
#endif
#define vxge_os_vaprintf(level, mask, fmt, ...) { \
char buff[255]; \
snprintf(buff, 255, fmt, __VA_ARGS__); \
printk(buff); \
printk("\n"); \
}
#ifndef VXGE_ALIGN
#define VXGE_ALIGN(adrs, size) \
(((size) - (((u64)adrs) & ((size)-1))) & ((size)-1))
#endif
#define VXGE_HW_MIN_MTU 68
#define VXGE_HW_MAX_MTU 9600
#define VXGE_HW_DEFAULT_MTU 1500
#ifdef VXGE_DEBUG_ASSERT
/**
* vxge_assert
* @test: C-condition to check
* @fmt: printf like format string
*
* This function implements traditional assert. By default assertions
* are enabled. It can be disabled by undefining VXGE_DEBUG_ASSERT macro in
* compilation
* time.
*/
#define vxge_assert(test) { \
if (!(test)) \
vxge_os_bug("bad cond: "#test" at %s:%d\n", \
__FILE__, __LINE__); }
#else
#define vxge_assert(test)
#endif /* end of VXGE_DEBUG_ASSERT */
/**
* enum enum vxge_debug_level
* @VXGE_NONE: debug disabled
* @VXGE_ERR: all errors going to be logged out
* @VXGE_TRACE: all errors plus all kind of verbose tracing print outs
* going to be logged out. Very noisy.
*
* This enumeration going to be used to switch between different
* debug levels during runtime if DEBUG macro defined during
* compilation. If DEBUG macro not defined than code will be
* compiled out.
*/
enum vxge_debug_level {
VXGE_NONE = 0,
VXGE_TRACE = 1,
VXGE_ERR = 2
};
#define NULL_VPID 0xFFFFFFFF
#ifdef CONFIG_VXGE_DEBUG_TRACE_ALL
#define VXGE_DEBUG_MODULE_MASK 0xffffffff
#define VXGE_DEBUG_TRACE_MASK 0xffffffff
#define VXGE_DEBUG_ERR_MASK 0xffffffff
#define VXGE_DEBUG_MASK 0x000001ff
#else
#define VXGE_DEBUG_MODULE_MASK 0x20000000
#define VXGE_DEBUG_TRACE_MASK 0x20000000
#define VXGE_DEBUG_ERR_MASK 0x20000000
#define VXGE_DEBUG_MASK 0x00000001
#endif
/*
* @VXGE_COMPONENT_LL: do debug for vxge link layer module
* @VXGE_COMPONENT_ALL: activate debug for all modules with no exceptions
*
* This enumeration going to be used to distinguish modules
* or libraries during compilation and runtime. Makefile must declare
* VXGE_DEBUG_MODULE_MASK macro and set it to proper value.
*/
#define VXGE_COMPONENT_LL 0x20000000
#define VXGE_COMPONENT_ALL 0xffffffff
#define VXGE_HW_BASE_INF 100
#define VXGE_HW_BASE_ERR 200
#define VXGE_HW_BASE_BADCFG 300
enum vxge_hw_status {
VXGE_HW_OK = 0,
VXGE_HW_FAIL = 1,
VXGE_HW_PENDING = 2,
VXGE_HW_COMPLETIONS_REMAIN = 3,
VXGE_HW_INF_NO_MORE_COMPLETED_DESCRIPTORS = VXGE_HW_BASE_INF + 1,
VXGE_HW_INF_OUT_OF_DESCRIPTORS = VXGE_HW_BASE_INF + 2,
VXGE_HW_ERR_INVALID_HANDLE = VXGE_HW_BASE_ERR + 1,
VXGE_HW_ERR_OUT_OF_MEMORY = VXGE_HW_BASE_ERR + 2,
VXGE_HW_ERR_VPATH_NOT_AVAILABLE = VXGE_HW_BASE_ERR + 3,
VXGE_HW_ERR_VPATH_NOT_OPEN = VXGE_HW_BASE_ERR + 4,
VXGE_HW_ERR_WRONG_IRQ = VXGE_HW_BASE_ERR + 5,
VXGE_HW_ERR_SWAPPER_CTRL = VXGE_HW_BASE_ERR + 6,
VXGE_HW_ERR_INVALID_MTU_SIZE = VXGE_HW_BASE_ERR + 7,
VXGE_HW_ERR_INVALID_INDEX = VXGE_HW_BASE_ERR + 8,
VXGE_HW_ERR_INVALID_TYPE = VXGE_HW_BASE_ERR + 9,
VXGE_HW_ERR_INVALID_OFFSET = VXGE_HW_BASE_ERR + 10,
VXGE_HW_ERR_INVALID_DEVICE = VXGE_HW_BASE_ERR + 11,
VXGE_HW_ERR_VERSION_CONFLICT = VXGE_HW_BASE_ERR + 12,
VXGE_HW_ERR_INVALID_PCI_INFO = VXGE_HW_BASE_ERR + 13,
VXGE_HW_ERR_INVALID_TCODE = VXGE_HW_BASE_ERR + 14,
VXGE_HW_ERR_INVALID_BLOCK_SIZE = VXGE_HW_BASE_ERR + 15,
VXGE_HW_ERR_INVALID_STATE = VXGE_HW_BASE_ERR + 16,
VXGE_HW_ERR_PRIVILAGED_OPEARATION = VXGE_HW_BASE_ERR + 17,
VXGE_HW_ERR_INVALID_PORT = VXGE_HW_BASE_ERR + 18,
VXGE_HW_ERR_FIFO = VXGE_HW_BASE_ERR + 19,
VXGE_HW_ERR_VPATH = VXGE_HW_BASE_ERR + 20,
VXGE_HW_ERR_CRITICAL = VXGE_HW_BASE_ERR + 21,
VXGE_HW_ERR_SLOT_FREEZE = VXGE_HW_BASE_ERR + 22,
VXGE_HW_BADCFG_RING_INDICATE_MAX_PKTS = VXGE_HW_BASE_BADCFG + 1,
VXGE_HW_BADCFG_FIFO_BLOCKS = VXGE_HW_BASE_BADCFG + 2,
VXGE_HW_BADCFG_VPATH_MTU = VXGE_HW_BASE_BADCFG + 3,
VXGE_HW_BADCFG_VPATH_RPA_STRIP_VLAN_TAG = VXGE_HW_BASE_BADCFG + 4,
VXGE_HW_BADCFG_VPATH_MIN_BANDWIDTH = VXGE_HW_BASE_BADCFG + 5,
VXGE_HW_BADCFG_INTR_MODE = VXGE_HW_BASE_BADCFG + 6,
VXGE_HW_BADCFG_RTS_MAC_EN = VXGE_HW_BASE_BADCFG + 7,
VXGE_HW_EOF_TRACE_BUF = -1
};
/**
* enum enum vxge_hw_device_link_state - Link state enumeration.
* @VXGE_HW_LINK_NONE: Invalid link state.
* @VXGE_HW_LINK_DOWN: Link is down.
* @VXGE_HW_LINK_UP: Link is up.
*
*/
enum vxge_hw_device_link_state {
VXGE_HW_LINK_NONE,
VXGE_HW_LINK_DOWN,
VXGE_HW_LINK_UP
};
/**
* struct vxge_hw_device_date - Date Format
* @day: Day
* @month: Month
* @year: Year
* @date: Date in string format
*
* Structure for returning date
*/
#define VXGE_HW_FW_STRLEN 32
struct vxge_hw_device_date {
u32 day;
u32 month;
u32 year;
char date[VXGE_HW_FW_STRLEN];
};
struct vxge_hw_device_version {
u32 major;
u32 minor;
u32 build;
char version[VXGE_HW_FW_STRLEN];
};
/**
* struct vxge_hw_fifo_config - Configuration of fifo.
* @enable: Is this fifo to be commissioned
* @fifo_blocks: Numbers of TxDL (that is, lists of Tx descriptors)
* blocks per queue.
* @max_frags: Max number of Tx buffers per TxDL (that is, per single
* transmit operation).
* No more than 256 transmit buffers can be specified.
* @memblock_size: Fifo descriptors are allocated in blocks of @mem_block_size
* bytes. Setting @memblock_size to page size ensures
* by-page allocation of descriptors. 128K bytes is the
* maximum supported block size.
* @alignment_size: per Tx fragment DMA-able memory used to align transmit data
* (e.g., to align on a cache line).
* @intr: Boolean. Use 1 to generate interrupt for each completed TxDL.
* Use 0 otherwise.
* @no_snoop_bits: If non-zero, specifies no-snoop PCI operation,
* which generally improves latency of the host bridge operation
* (see PCI specification). For valid values please refer
* to struct vxge_hw_fifo_config{} in the driver sources.
* Configuration of all Titan fifos.
* Note: Valid (min, max) range for each attribute is specified in the body of
* the struct vxge_hw_fifo_config{} structure.
*/
struct vxge_hw_fifo_config {
u32 enable;
#define VXGE_HW_FIFO_ENABLE 1
#define VXGE_HW_FIFO_DISABLE 0
u32 fifo_blocks;
#define VXGE_HW_MIN_FIFO_BLOCKS 2
#define VXGE_HW_MAX_FIFO_BLOCKS 128
u32 max_frags;
#define VXGE_HW_MIN_FIFO_FRAGS 1
#define VXGE_HW_MAX_FIFO_FRAGS 256
u32 memblock_size;
#define VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE VXGE_HW_BLOCK_SIZE
#define VXGE_HW_MAX_FIFO_MEMBLOCK_SIZE 131072
#define VXGE_HW_DEF_FIFO_MEMBLOCK_SIZE 8096
u32 alignment_size;
#define VXGE_HW_MIN_FIFO_ALIGNMENT_SIZE 0
#define VXGE_HW_MAX_FIFO_ALIGNMENT_SIZE 65536
#define VXGE_HW_DEF_FIFO_ALIGNMENT_SIZE VXGE_CACHE_LINE_SIZE
u32 intr;
#define VXGE_HW_FIFO_QUEUE_INTR_ENABLE 1
#define VXGE_HW_FIFO_QUEUE_INTR_DISABLE 0
#define VXGE_HW_FIFO_QUEUE_INTR_DEFAULT 0
u32 no_snoop_bits;
#define VXGE_HW_FIFO_NO_SNOOP_DISABLED 0
#define VXGE_HW_FIFO_NO_SNOOP_TXD 1
#define VXGE_HW_FIFO_NO_SNOOP_FRM 2
#define VXGE_HW_FIFO_NO_SNOOP_ALL 3
#define VXGE_HW_FIFO_NO_SNOOP_DEFAULT 0
};
/**
* struct vxge_hw_ring_config - Ring configurations.
* @enable: Is this ring to be commissioned
* @ring_blocks: Numbers of RxD blocks in the ring
* @buffer_mode: Receive buffer mode (1, 2, 3, or 5); for details please refer
* to Titan User Guide.
* @scatter_mode: Titan supports two receive scatter modes: A and B.
* For details please refer to Titan User Guide.
* @rx_timer_val: The number of 32ns periods that would be counted between two
* timer interrupts.
* @greedy_return: If Set it forces the device to return absolutely all RxD
* that are consumed and still on board when a timer interrupt
* triggers. If Clear, then if the device has already returned
* RxD before current timer interrupt trigerred and after the
* previous timer interrupt triggered, then the device is not
* forced to returned the rest of the consumed RxD that it has
* on board which account for a byte count less than the one
* programmed into PRC_CFG6.RXD_CRXDT field
* @rx_timer_ci: TBD
* @backoff_interval_us: Time (in microseconds), after which Titan
* tries to download RxDs posted by the host.
* Note that the "backoff" does not happen if host posts receive
* descriptors in the timely fashion.
* Ring configuration.
*/
struct vxge_hw_ring_config {
u32 enable;
#define VXGE_HW_RING_ENABLE 1
#define VXGE_HW_RING_DISABLE 0
#define VXGE_HW_RING_DEFAULT 1
u32 ring_blocks;
#define VXGE_HW_MIN_RING_BLOCKS 1
#define VXGE_HW_MAX_RING_BLOCKS 128
#define VXGE_HW_DEF_RING_BLOCKS 2
u32 buffer_mode;
#define VXGE_HW_RING_RXD_BUFFER_MODE_1 1
#define VXGE_HW_RING_RXD_BUFFER_MODE_3 3
#define VXGE_HW_RING_RXD_BUFFER_MODE_5 5
#define VXGE_HW_RING_RXD_BUFFER_MODE_DEFAULT 1
u32 scatter_mode;
#define VXGE_HW_RING_SCATTER_MODE_A 0
#define VXGE_HW_RING_SCATTER_MODE_B 1
#define VXGE_HW_RING_SCATTER_MODE_C 2
#define VXGE_HW_RING_SCATTER_MODE_USE_FLASH_DEFAULT 0xffffffff
u64 rxds_limit;
#define VXGE_HW_DEF_RING_RXDS_LIMIT 44
};
/**
* struct vxge_hw_vp_config - Configuration of virtual path
* @vp_id: Virtual Path Id
* @min_bandwidth: Minimum Guaranteed bandwidth
* @ring: See struct vxge_hw_ring_config{}.
* @fifo: See struct vxge_hw_fifo_config{}.
* @tti: Configuration of interrupt associated with Transmit.
* see struct vxge_hw_tim_intr_config();
* @rti: Configuration of interrupt associated with Receive.
* see struct vxge_hw_tim_intr_config();
* @mtu: mtu size used on this port.
* @rpa_strip_vlan_tag: Strip VLAN Tag enable/disable. Instructs the device to
* remove the VLAN tag from all received tagged frames that are not
* replicated at the internal L2 switch.
* 0 - Do not strip the VLAN tag.
* 1 - Strip the VLAN tag. Regardless of this setting, VLAN tags are
* always placed into the RxDMA descriptor.
*
* This structure is used by the driver to pass the configuration parameters to
* configure Virtual Path.
*/
struct vxge_hw_vp_config {
u32 vp_id;
#define VXGE_HW_VPATH_PRIORITY_MIN 0
#define VXGE_HW_VPATH_PRIORITY_MAX 16
#define VXGE_HW_VPATH_PRIORITY_DEFAULT 0
u32 min_bandwidth;
#define VXGE_HW_VPATH_BANDWIDTH_MIN 0
#define VXGE_HW_VPATH_BANDWIDTH_MAX 100
#define VXGE_HW_VPATH_BANDWIDTH_DEFAULT 0
struct vxge_hw_ring_config ring;
struct vxge_hw_fifo_config fifo;
struct vxge_hw_tim_intr_config tti;
struct vxge_hw_tim_intr_config rti;
u32 mtu;
#define VXGE_HW_VPATH_MIN_INITIAL_MTU VXGE_HW_MIN_MTU
#define VXGE_HW_VPATH_MAX_INITIAL_MTU VXGE_HW_MAX_MTU
#define VXGE_HW_VPATH_USE_FLASH_DEFAULT_INITIAL_MTU 0xffffffff
u32 rpa_strip_vlan_tag;
#define VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE 1
#define VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_DISABLE 0
#define VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_USE_FLASH_DEFAULT 0xffffffff
};
/**
* struct vxge_hw_device_config - Device configuration.
* @dma_blockpool_initial: Initial size of DMA Pool
* @dma_blockpool_max: Maximum blocks in DMA pool
* @intr_mode: Line, or MSI-X interrupt.
*
* @rth_en: Enable Receive Traffic Hashing(RTH) using IT(Indirection Table).
* @rth_it_type: RTH IT table programming type
* @rts_mac_en: Enable Receive Traffic Steering using MAC destination address
* @vp_config: Configuration for virtual paths
* @device_poll_millis: Specify the interval (in mulliseconds)
* to wait for register reads
*
* Titan configuration.
* Contains per-device configuration parameters, including:
* - stats sampling interval, etc.
*
* In addition, struct vxge_hw_device_config{} includes "subordinate"
* configurations, including:
* - fifos and rings;
* - MAC (done at firmware level).
*
* See Titan User Guide for more details.
* Note: Valid (min, max) range for each attribute is specified in the body of
* the struct vxge_hw_device_config{} structure. Please refer to the
* corresponding include file.
* See also: struct vxge_hw_tim_intr_config{}.
*/
struct vxge_hw_device_config {
u32 dma_blockpool_initial;
u32 dma_blockpool_max;
#define VXGE_HW_MIN_DMA_BLOCK_POOL_SIZE 0
#define VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE 0
#define VXGE_HW_INCR_DMA_BLOCK_POOL_SIZE 4
#define VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE 4096
#define VXGE_HW_MAX_PAYLOAD_SIZE_512 2
u32 intr_mode;
#define VXGE_HW_INTR_MODE_IRQLINE 0
#define VXGE_HW_INTR_MODE_MSIX 1
#define VXGE_HW_INTR_MODE_MSIX_ONE_SHOT 2
#define VXGE_HW_INTR_MODE_DEF 0
u32 rth_en;
#define VXGE_HW_RTH_DISABLE 0
#define VXGE_HW_RTH_ENABLE 1
#define VXGE_HW_RTH_DEFAULT 0
u32 rth_it_type;
#define VXGE_HW_RTH_IT_TYPE_SOLO_IT 0
#define VXGE_HW_RTH_IT_TYPE_MULTI_IT 1
#define VXGE_HW_RTH_IT_TYPE_DEFAULT 0
u32 rts_mac_en;
#define VXGE_HW_RTS_MAC_DISABLE 0
#define VXGE_HW_RTS_MAC_ENABLE 1
#define VXGE_HW_RTS_MAC_DEFAULT 0
struct vxge_hw_vp_config vp_config[VXGE_HW_MAX_VIRTUAL_PATHS];
u32 device_poll_millis;
#define VXGE_HW_MIN_DEVICE_POLL_MILLIS 1
#define VXGE_HW_MAX_DEVICE_POLL_MILLIS 100000
#define VXGE_HW_DEF_DEVICE_POLL_MILLIS 1000
};
/**
* function vxge_uld_link_up_f - Link-Up callback provided by driver.
* @devh: HW device handle.
* Link-up notification callback provided by the driver.
* This is one of the per-driver callbacks, see struct vxge_hw_uld_cbs{}.
*
* See also: struct vxge_hw_uld_cbs{}, vxge_uld_link_down_f{},
* vxge_hw_driver_initialize().
*/
/**
* function vxge_uld_link_down_f - Link-Down callback provided by
* driver.
* @devh: HW device handle.
*
* Link-Down notification callback provided by the driver.
* This is one of the per-driver callbacks, see struct vxge_hw_uld_cbs{}.
*
* See also: struct vxge_hw_uld_cbs{}, vxge_uld_link_up_f{},
* vxge_hw_driver_initialize().
*/
/**
* function vxge_uld_crit_err_f - Critical Error notification callback.
* @devh: HW device handle.
* (typically - at HW device iinitialization time).
* @type: Enumerated hw error, e.g.: double ECC.
* @serr_data: Titan status.
* @ext_data: Extended data. The contents depends on the @type.
*
* Link-Down notification callback provided by the driver.
* This is one of the per-driver callbacks, see struct vxge_hw_uld_cbs{}.
*
* See also: struct vxge_hw_uld_cbs{}, enum vxge_hw_event{},
* vxge_hw_driver_initialize().
*/
/**
* struct vxge_hw_uld_cbs - driver "slow-path" callbacks.
* @link_up: See vxge_uld_link_up_f{}.
* @link_down: See vxge_uld_link_down_f{}.
* @crit_err: See vxge_uld_crit_err_f{}.
*
* Driver slow-path (per-driver) callbacks.
* Implemented by driver and provided to HW via
* vxge_hw_driver_initialize().
* Note that these callbacks are not mandatory: HW will not invoke
* a callback if NULL is specified.
*
* See also: vxge_hw_driver_initialize().
*/
struct vxge_hw_uld_cbs {
void (*link_up)(struct __vxge_hw_device *devh);
void (*link_down)(struct __vxge_hw_device *devh);
void (*crit_err)(struct __vxge_hw_device *devh,
enum vxge_hw_event type, u64 ext_data);
};
/*
* struct __vxge_hw_blockpool_entry - Block private data structure
* @item: List header used to link.
* @length: Length of the block
* @memblock: Virtual address block
* @dma_addr: DMA Address of the block.
* @dma_handle: DMA handle of the block.
* @acc_handle: DMA acc handle
*
* Block is allocated with a header to put the blocks into list.
*
*/
struct __vxge_hw_blockpool_entry {
struct list_head item;
u32 length;
void *memblock;
dma_addr_t dma_addr;
struct pci_dev *dma_handle;
struct pci_dev *acc_handle;
};
/*
* struct __vxge_hw_blockpool - Block Pool
* @hldev: HW device
* @block_size: size of each block.
* @Pool_size: Number of blocks in the pool
* @pool_max: Maximum number of blocks above which to free additional blocks
* @req_out: Number of block requests with OS out standing
* @free_block_list: List of free blocks
*
* Block pool contains the DMA blocks preallocated.
*
*/
struct __vxge_hw_blockpool {
struct __vxge_hw_device *hldev;
u32 block_size;
u32 pool_size;
u32 pool_max;
u32 req_out;
struct list_head free_block_list;
struct list_head free_entry_list;
};
/*
* enum enum __vxge_hw_channel_type - Enumerated channel types.
* @VXGE_HW_CHANNEL_TYPE_UNKNOWN: Unknown channel.
* @VXGE_HW_CHANNEL_TYPE_FIFO: fifo.
* @VXGE_HW_CHANNEL_TYPE_RING: ring.
* @VXGE_HW_CHANNEL_TYPE_MAX: Maximum number of HW-supported
* (and recognized) channel types. Currently: 2.
*
* Enumerated channel types. Currently there are only two link-layer
* channels - Titan fifo and Titan ring. In the future the list will grow.
*/
enum __vxge_hw_channel_type {
VXGE_HW_CHANNEL_TYPE_UNKNOWN = 0,
VXGE_HW_CHANNEL_TYPE_FIFO = 1,
VXGE_HW_CHANNEL_TYPE_RING = 2,
VXGE_HW_CHANNEL_TYPE_MAX = 3
};
/*
* struct __vxge_hw_channel
* @item: List item; used to maintain a list of open channels.
* @type: Channel type. See enum vxge_hw_channel_type{}.
* @devh: Device handle. HW device object that contains _this_ channel.
* @vph: Virtual path handle. Virtual Path Object that contains _this_ channel.
* @length: Channel length. Currently allocated number of descriptors.
* The channel length "grows" when more descriptors get allocated.
* See _hw_mempool_grow.
* @reserve_arr: Reserve array. Contains descriptors that can be reserved
* by driver for the subsequent send or receive operation.
* See vxge_hw_fifo_txdl_reserve(),
* vxge_hw_ring_rxd_reserve().
* @reserve_ptr: Current pointer in the resrve array
* @reserve_top: Reserve top gives the maximum number of dtrs available in
* reserve array.
* @work_arr: Work array. Contains descriptors posted to the channel.
* Note that at any point in time @work_arr contains 3 types of
* descriptors:
* 1) posted but not yet consumed by Titan device;
* 2) consumed but not yet completed;
* 3) completed but not yet freed
* (via vxge_hw_fifo_txdl_free() or vxge_hw_ring_rxd_free())
* @post_index: Post index. At any point in time points on the
* position in the channel, which'll contain next to-be-posted
* descriptor.
* @compl_index: Completion index. At any point in time points on the
* position in the channel, which will contain next
* to-be-completed descriptor.
* @free_arr: Free array. Contains completed descriptors that were freed
* (i.e., handed over back to HW) by driver.
* See vxge_hw_fifo_txdl_free(), vxge_hw_ring_rxd_free().
* @free_ptr: current pointer in free array
* @per_dtr_space: Per-descriptor space (in bytes) that channel user can utilize
* to store per-operation control information.
* @stats: Pointer to common statistics
* @userdata: Per-channel opaque (void*) user-defined context, which may be
* driver object, ULP connection, etc.
* Once channel is open, @userdata is passed back to user via
* vxge_hw_channel_callback_f.
*
* HW channel object.
*
* See also: enum vxge_hw_channel_type{}, enum vxge_hw_channel_flag
*/
struct __vxge_hw_channel {
struct list_head item;
enum __vxge_hw_channel_type type;
struct __vxge_hw_device *devh;
struct __vxge_hw_vpath_handle *vph;
u32 length;
u32 vp_id;
void **reserve_arr;
u32 reserve_ptr;
u32 reserve_top;
void **work_arr;
u32 post_index ____cacheline_aligned;
u32 compl_index ____cacheline_aligned;
void **free_arr;
u32 free_ptr;
void **orig_arr;
u32 per_dtr_space;
void *userdata;
struct vxge_hw_common_reg __iomem *common_reg;
u32 first_vp_id;
struct vxge_hw_vpath_stats_sw_common_info *stats;
} ____cacheline_aligned;
/*
* struct __vxge_hw_virtualpath - Virtual Path
*
* @vp_id: Virtual path id
* @vp_open: This flag specifies if vxge_hw_vp_open is called from LL Driver
* @hldev: Hal device
* @vp_config: Virtual Path Config
* @vp_reg: VPATH Register map address in BAR0
* @vpmgmt_reg: VPATH_MGMT register map address
* @max_mtu: Max mtu that can be supported
* @vsport_number: vsport attached to this vpath
* @max_kdfc_db: Maximum kernel mode doorbells
* @max_nofl_db: Maximum non offload doorbells
* @tx_intr_num: Interrupt Number associated with the TX
* @ringh: Ring Queue
* @fifoh: FIFO Queue
* @vpath_handles: Virtual Path handles list
* @stats_block: Memory for DMAing stats
* @stats: Vpath statistics
*
* Virtual path structure to encapsulate the data related to a virtual path.
* Virtual paths are allocated by the HW upon getting configuration from the
* driver and inserted into the list of virtual paths.
*/
struct __vxge_hw_virtualpath {
u32 vp_id;
u32 vp_open;
#define VXGE_HW_VP_NOT_OPEN 0
#define VXGE_HW_VP_OPEN 1
struct __vxge_hw_device *hldev;
struct vxge_hw_vp_config *vp_config;
struct vxge_hw_vpath_reg __iomem *vp_reg;
struct vxge_hw_vpmgmt_reg __iomem *vpmgmt_reg;
struct __vxge_hw_non_offload_db_wrapper __iomem *nofl_db;
u32 max_mtu;
u32 vsport_number;
u32 max_kdfc_db;
u32 max_nofl_db;
struct __vxge_hw_ring *____cacheline_aligned ringh;
struct __vxge_hw_fifo *____cacheline_aligned fifoh;
struct list_head vpath_handles;
struct __vxge_hw_blockpool_entry *stats_block;
struct vxge_hw_vpath_stats_hw_info *hw_stats;
struct vxge_hw_vpath_stats_hw_info *hw_stats_sav;
struct vxge_hw_vpath_stats_sw_info *sw_stats;
};
/*
* struct __vxge_hw_vpath_handle - List item to store callback information
* @item: List head to keep the item in linked list
* @vpath: Virtual path to which this item belongs
*
* This structure is used to store the callback information.
*/
struct __vxge_hw_vpath_handle{
struct list_head item;
struct __vxge_hw_virtualpath *vpath;
};
/*
* struct __vxge_hw_device
*
* HW device object.
*/
/**
* struct __vxge_hw_device - Hal device object
* @magic: Magic Number
* @device_id: PCI Device Id of the adapter
* @major_revision: PCI Device major revision
* @minor_revision: PCI Device minor revision
* @bar0: BAR0 virtual address.
* @pdev: Physical device handle
* @config: Confguration passed by the LL driver at initialization
* @link_state: Link state
*
* HW device object. Represents Titan adapter
*/
struct __vxge_hw_device {
u32 magic;
#define VXGE_HW_DEVICE_MAGIC 0x12345678
#define VXGE_HW_DEVICE_DEAD 0xDEADDEAD
u16 device_id;
u8 major_revision;
u8 minor_revision;
void __iomem *bar0;
struct pci_dev *pdev;
struct net_device *ndev;
struct vxge_hw_device_config config;
enum vxge_hw_device_link_state link_state;
struct vxge_hw_uld_cbs uld_callbacks;
u32 host_type;
u32 func_id;
u32 access_rights;
#define VXGE_HW_DEVICE_ACCESS_RIGHT_VPATH 0x1
#define VXGE_HW_DEVICE_ACCESS_RIGHT_SRPCIM 0x2
#define VXGE_HW_DEVICE_ACCESS_RIGHT_MRPCIM 0x4
struct vxge_hw_legacy_reg __iomem *legacy_reg;
struct vxge_hw_toc_reg __iomem *toc_reg;
struct vxge_hw_common_reg __iomem *common_reg;
struct vxge_hw_mrpcim_reg __iomem *mrpcim_reg;
struct vxge_hw_srpcim_reg __iomem *srpcim_reg \
[VXGE_HW_TITAN_SRPCIM_REG_SPACES];
struct vxge_hw_vpmgmt_reg __iomem *vpmgmt_reg \
[VXGE_HW_TITAN_VPMGMT_REG_SPACES];
struct vxge_hw_vpath_reg __iomem *vpath_reg \
[VXGE_HW_TITAN_VPATH_REG_SPACES];
u8 __iomem *kdfc;
u8 __iomem *usdc;
struct __vxge_hw_virtualpath virtual_paths \
[VXGE_HW_MAX_VIRTUAL_PATHS];
u64 vpath_assignments;
u64 vpaths_deployed;
u32 first_vp_id;
u64 tim_int_mask0[4];
u32 tim_int_mask1[4];
struct __vxge_hw_blockpool block_pool;
struct vxge_hw_device_stats stats;
u32 debug_module_mask;
u32 debug_level;
u32 level_err;
u32 level_trace;
};
#define VXGE_HW_INFO_LEN 64
/**
* struct vxge_hw_device_hw_info - Device information
* @host_type: Host Type
* @func_id: Function Id
* @vpath_mask: vpath bit mask
* @fw_version: Firmware version
* @fw_date: Firmware Date
* @flash_version: Firmware version
* @flash_date: Firmware Date
* @mac_addrs: Mac addresses for each vpath
* @mac_addr_masks: Mac address masks for each vpath
*
* Returns the vpath mask that has the bits set for each vpath allocated
* for the driver and the first mac address for each vpath
*/
struct vxge_hw_device_hw_info {
u32 host_type;
#define VXGE_HW_NO_MR_NO_SR_NORMAL_FUNCTION 0
#define VXGE_HW_MR_NO_SR_VH0_BASE_FUNCTION 1
#define VXGE_HW_NO_MR_SR_VH0_FUNCTION0 2
#define VXGE_HW_NO_MR_SR_VH0_VIRTUAL_FUNCTION 3
#define VXGE_HW_MR_SR_VH0_INVALID_CONFIG 4
#define VXGE_HW_SR_VH_FUNCTION0 5
#define VXGE_HW_SR_VH_VIRTUAL_FUNCTION 6
#define VXGE_HW_VH_NORMAL_FUNCTION 7
u64 function_mode;
#define VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION 0
#define VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION 1
#define VXGE_HW_FUNCTION_MODE_SRIOV 2
#define VXGE_HW_FUNCTION_MODE_MRIOV 3
#define VXGE_HW_FUNCTION_MODE_MRIOV_8 4
#define VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17 5
#define VXGE_HW_FUNCTION_MODE_SRIOV_8 6
#define VXGE_HW_FUNCTION_MODE_SRIOV_4 7
#define VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2 8
#define VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_4 9
#define VXGE_HW_FUNCTION_MODE_MRIOV_4 10
u32 func_id;
u64 vpath_mask;
struct vxge_hw_device_version fw_version;
struct vxge_hw_device_date fw_date;
struct vxge_hw_device_version flash_version;
struct vxge_hw_device_date flash_date;
u8 serial_number[VXGE_HW_INFO_LEN];
u8 part_number[VXGE_HW_INFO_LEN];
u8 product_desc[VXGE_HW_INFO_LEN];
u8 (mac_addrs)[VXGE_HW_MAX_VIRTUAL_PATHS][ETH_ALEN];
u8 (mac_addr_masks)[VXGE_HW_MAX_VIRTUAL_PATHS][ETH_ALEN];
};
/**
* struct vxge_hw_device_attr - Device memory spaces.
* @bar0: BAR0 virtual address.
* @pdev: PCI device object.
*
* Device memory spaces. Includes configuration, BAR0 etc. per device
* mapped memories. Also, includes a pointer to OS-specific PCI device object.
*/
struct vxge_hw_device_attr {
void __iomem *bar0;
struct pci_dev *pdev;
struct vxge_hw_uld_cbs uld_callbacks;
};
#define VXGE_HW_DEVICE_LINK_STATE_SET(hldev, ls) (hldev->link_state = ls)
#define VXGE_HW_DEVICE_TIM_INT_MASK_SET(m0, m1, i) { \
if (i < 16) { \
m0[0] |= vxge_vBIT(0x8, (i*4), 4); \
m0[1] |= vxge_vBIT(0x4, (i*4), 4); \
} \
else { \
m1[0] = 0x80000000; \
m1[1] = 0x40000000; \
} \
}
#define VXGE_HW_DEVICE_TIM_INT_MASK_RESET(m0, m1, i) { \
if (i < 16) { \
m0[0] &= ~vxge_vBIT(0x8, (i*4), 4); \
m0[1] &= ~vxge_vBIT(0x4, (i*4), 4); \
} \
else { \
m1[0] = 0; \
m1[1] = 0; \
} \
}
#define VXGE_HW_DEVICE_STATS_PIO_READ(loc, offset) { \
status = vxge_hw_mrpcim_stats_access(hldev, \
VXGE_HW_STATS_OP_READ, \
loc, \
offset, \
&val64); \
\
if (status != VXGE_HW_OK) \
return status; \
}
#define VXGE_HW_VPATH_STATS_PIO_READ(offset) { \
status = __vxge_hw_vpath_stats_access(vpath, \
VXGE_HW_STATS_OP_READ, \
offset, \
&val64); \
if (status != VXGE_HW_OK) \
return status; \
}
/*
* struct __vxge_hw_ring - Ring channel.
* @channel: Channel "base" of this ring, the common part of all HW
* channels.
* @mempool: Memory pool, the pool from which descriptors get allocated.
* (See vxge_hw_mm.h).
* @config: Ring configuration, part of device configuration
* (see struct vxge_hw_device_config{}).
* @ring_length: Length of the ring
* @buffer_mode: 1, 3, or 5. The value specifies a receive buffer mode,
* as per Titan User Guide.
* @rxd_size: RxD sizes for 1-, 3- or 5- buffer modes. As per Titan spec,
* 1-buffer mode descriptor is 32 byte long, etc.
* @rxd_priv_size: Per RxD size reserved (by HW) for driver to keep
* per-descriptor data (e.g., DMA handle for Solaris)
* @per_rxd_space: Per rxd space requested by driver
* @rxds_per_block: Number of descriptors per hardware-defined RxD
* block. Depends on the (1-, 3-, 5-) buffer mode.
* @rxdblock_priv_size: Reserved at the end of each RxD block. HW internal
* usage. Not to confuse with @rxd_priv_size.
* @cmpl_cnt: Completion counter. Is reset to zero upon entering the ISR.
* @callback: Channel completion callback. HW invokes the callback when there
* are new completions on that channel. In many implementations
* the @callback executes in the hw interrupt context.
* @rxd_init: Channel's descriptor-initialize callback.
* See vxge_hw_ring_rxd_init_f{}.
* If not NULL, HW invokes the callback when opening
* the ring.
* @rxd_term: Channel's descriptor-terminate callback. If not NULL,
* HW invokes the callback when closing the corresponding channel.
* See also vxge_hw_channel_rxd_term_f{}.
* @stats: Statistics for ring
* Ring channel.
*
* Note: The structure is cache line aligned to better utilize
* CPU cache performance.
*/
struct __vxge_hw_ring {
struct __vxge_hw_channel channel;
struct vxge_hw_mempool *mempool;
struct vxge_hw_vpath_reg __iomem *vp_reg;
struct vxge_hw_common_reg __iomem *common_reg;
u32 ring_length;
u32 buffer_mode;
u32 rxd_size;
u32 rxd_priv_size;
u32 per_rxd_space;
u32 rxds_per_block;
u32 rxdblock_priv_size;
u32 cmpl_cnt;
u32 vp_id;
u32 doorbell_cnt;
u32 total_db_cnt;
u64 rxds_limit;
enum vxge_hw_status (*callback)(
struct __vxge_hw_ring *ringh,
void *rxdh,
u8 t_code,
void *userdata);
enum vxge_hw_status (*rxd_init)(
void *rxdh,
void *userdata);
void (*rxd_term)(
void *rxdh,
enum vxge_hw_rxd_state state,
void *userdata);
struct vxge_hw_vpath_stats_sw_ring_info *stats ____cacheline_aligned;
struct vxge_hw_ring_config *config;
} ____cacheline_aligned;
/**
* enum enum vxge_hw_txdl_state - Descriptor (TXDL) state.
* @VXGE_HW_TXDL_STATE_NONE: Invalid state.
* @VXGE_HW_TXDL_STATE_AVAIL: Descriptor is available for reservation.
* @VXGE_HW_TXDL_STATE_POSTED: Descriptor is posted for processing by the
* device.
* @VXGE_HW_TXDL_STATE_FREED: Descriptor is free and can be reused for
* filling-in and posting later.
*
* Titan/HW descriptor states.
*
*/
enum vxge_hw_txdl_state {
VXGE_HW_TXDL_STATE_NONE = 0,
VXGE_HW_TXDL_STATE_AVAIL = 1,
VXGE_HW_TXDL_STATE_POSTED = 2,
VXGE_HW_TXDL_STATE_FREED = 3
};
/*
* struct __vxge_hw_fifo - Fifo.
* @channel: Channel "base" of this fifo, the common part of all HW
* channels.
* @mempool: Memory pool, from which descriptors get allocated.
* @config: Fifo configuration, part of device configuration
* (see struct vxge_hw_device_config{}).
* @interrupt_type: Interrupt type to be used
* @no_snoop_bits: See struct vxge_hw_fifo_config{}.
* @txdl_per_memblock: Number of TxDLs (TxD lists) per memblock.
* on TxDL please refer to Titan UG.
* @txdl_size: Configured TxDL size (i.e., number of TxDs in a list), plus
* per-TxDL HW private space (struct __vxge_hw_fifo_txdl_priv).
* @priv_size: Per-Tx descriptor space reserved for driver
* usage.
* @per_txdl_space: Per txdl private space for the driver
* @callback: Fifo completion callback. HW invokes the callback when there
* are new completions on that fifo. In many implementations
* the @callback executes in the hw interrupt context.
* @txdl_term: Fifo's descriptor-terminate callback. If not NULL,
* HW invokes the callback when closing the corresponding fifo.
* See also vxge_hw_fifo_txdl_term_f{}.
* @stats: Statistics of this fifo
*
* Fifo channel.
* Note: The structure is cache line aligned.
*/
struct __vxge_hw_fifo {
struct __vxge_hw_channel channel;
struct vxge_hw_mempool *mempool;
struct vxge_hw_fifo_config *config;
struct vxge_hw_vpath_reg __iomem *vp_reg;
struct __vxge_hw_non_offload_db_wrapper __iomem *nofl_db;
u64 interrupt_type;
u32 no_snoop_bits;
u32 txdl_per_memblock;
u32 txdl_size;
u32 priv_size;
u32 per_txdl_space;
u32 vp_id;
u32 tx_intr_num;
enum vxge_hw_status (*callback)(
struct __vxge_hw_fifo *fifo_handle,
void *txdlh,
enum vxge_hw_fifo_tcode t_code,
void *userdata,
struct sk_buff ***skb_ptr,
int nr_skb,
int *more);
void (*txdl_term)(
void *txdlh,
enum vxge_hw_txdl_state state,
void *userdata);
struct vxge_hw_vpath_stats_sw_fifo_info *stats ____cacheline_aligned;
} ____cacheline_aligned;
/*
* struct __vxge_hw_fifo_txdl_priv - Transmit descriptor HW-private data.
* @dma_addr: DMA (mapped) address of _this_ descriptor.
* @dma_handle: DMA handle used to map the descriptor onto device.
* @dma_offset: Descriptor's offset in the memory block. HW allocates
* descriptors in memory blocks (see struct vxge_hw_fifo_config{})
* Each memblock is a contiguous block of DMA-able memory.
* @frags: Total number of fragments (that is, contiguous data buffers)
* carried by this TxDL.
* @align_vaddr_start: Aligned virtual address start
* @align_vaddr: Virtual address of the per-TxDL area in memory used for
* alignement. Used to place one or more mis-aligned fragments
* @align_dma_addr: DMA address translated from the @align_vaddr.
* @align_dma_handle: DMA handle that corresponds to @align_dma_addr.
* @align_dma_acch: DMA access handle corresponds to @align_dma_addr.
* @align_dma_offset: The current offset into the @align_vaddr area.
* Grows while filling the descriptor, gets reset.
* @align_used_frags: Number of fragments used.
* @alloc_frags: Total number of fragments allocated.
* @unused: TODO
* @next_txdl_priv: (TODO).
* @first_txdp: (TODO).
* @linked_txdl_priv: Pointer to any linked TxDL for creating contiguous
* TxDL list.
* @txdlh: Corresponding txdlh to this TxDL.
* @memblock: Pointer to the TxDL memory block or memory page.
* on the next send operation.
* @dma_object: DMA address and handle of the memory block that contains
* the descriptor. This member is used only in the "checked"
* version of the HW (to enforce certain assertions);
* otherwise it gets compiled out.
* @allocated: True if the descriptor is reserved, 0 otherwise. Internal usage.
*
* Per-transmit decsriptor HW-private data. HW uses the space to keep DMA
* information associated with the descriptor. Note that driver can ask HW
* to allocate additional per-descriptor space for its own (driver-specific)
* purposes.
*
* See also: struct vxge_hw_ring_rxd_priv{}.
*/
struct __vxge_hw_fifo_txdl_priv {
dma_addr_t dma_addr;
struct pci_dev *dma_handle;
ptrdiff_t dma_offset;
u32 frags;
u8 *align_vaddr_start;
u8 *align_vaddr;
dma_addr_t align_dma_addr;
struct pci_dev *align_dma_handle;
struct pci_dev *align_dma_acch;
ptrdiff_t align_dma_offset;
u32 align_used_frags;
u32 alloc_frags;
u32 unused;
struct __vxge_hw_fifo_txdl_priv *next_txdl_priv;
struct vxge_hw_fifo_txd *first_txdp;
void *memblock;
};
/*
* struct __vxge_hw_non_offload_db_wrapper - Non-offload Doorbell Wrapper
* @control_0: Bits 0 to 7 - Doorbell type.
* Bits 8 to 31 - Reserved.
* Bits 32 to 39 - The highest TxD in this TxDL.
* Bits 40 to 47 - Reserved.
* Bits 48 to 55 - Reserved.
* Bits 56 to 63 - No snoop flags.
* @txdl_ptr: The starting location of the TxDL in host memory.
*
* Created by the host and written to the adapter via PIO to a Kernel Doorbell
* FIFO. All non-offload doorbell wrapper fields must be written by the host as
* part of a doorbell write. Consumed by the adapter but is not written by the
* adapter.
*/
struct __vxge_hw_non_offload_db_wrapper {
u64 control_0;
#define VXGE_HW_NODBW_GET_TYPE(ctrl0) vxge_bVALn(ctrl0, 0, 8)
#define VXGE_HW_NODBW_TYPE(val) vxge_vBIT(val, 0, 8)
#define VXGE_HW_NODBW_TYPE_NODBW 0
#define VXGE_HW_NODBW_GET_LAST_TXD_NUMBER(ctrl0) vxge_bVALn(ctrl0, 32, 8)
#define VXGE_HW_NODBW_LAST_TXD_NUMBER(val) vxge_vBIT(val, 32, 8)
#define VXGE_HW_NODBW_GET_NO_SNOOP(ctrl0) vxge_bVALn(ctrl0, 56, 8)
#define VXGE_HW_NODBW_LIST_NO_SNOOP(val) vxge_vBIT(val, 56, 8)
#define VXGE_HW_NODBW_LIST_NO_SNOOP_TXD_READ_TXD0_WRITE 0x2
#define VXGE_HW_NODBW_LIST_NO_SNOOP_TX_FRAME_DATA_READ 0x1
u64 txdl_ptr;
};
/*
* TX Descriptor
*/
/**
* struct vxge_hw_fifo_txd - Transmit Descriptor
* @control_0: Bits 0 to 6 - Reserved.
* Bit 7 - List Ownership. This field should be initialized
* to '1' by the driver before the transmit list pointer is
* written to the adapter. This field will be set to '0' by the
* adapter once it has completed transmitting the frame or frames in
* the list. Note - This field is only valid in TxD0. Additionally,
* for multi-list sequences, the driver should not release any
* buffers until the ownership of the last list in the multi-list
* sequence has been returned to the host.
* Bits 8 to 11 - Reserved
* Bits 12 to 15 - Transfer_Code. This field is only valid in
* TxD0. It is used to describe the status of the transmit data
* buffer transfer. This field is always overwritten by the
* adapter, so this field may be initialized to any value.
* Bits 16 to 17 - Host steering. This field allows the host to
* override the selection of the physical transmit port.
* Attention:
* Normal sounds as if learned from the switch rather than from
* the aggregation algorythms.
* 00: Normal. Use Destination/MAC Address
* lookup to determine the transmit port.
* 01: Send on physical Port1.
* 10: Send on physical Port0.
* 11: Send on both ports.
* Bits 18 to 21 - Reserved
* Bits 22 to 23 - Gather_Code. This field is set by the host and
* is used to describe how individual buffers comprise a frame.
* 10: First descriptor of a frame.
* 00: Middle of a multi-descriptor frame.
* 01: Last descriptor of a frame.
* 11: First and last descriptor of a frame (the entire frame
* resides in a single buffer).
* For multi-descriptor frames, the only valid gather code sequence
* is {10, [00], 01}. In other words, the descriptors must be placed
* in the list in the correct order.
* Bits 24 to 27 - Reserved
* Bits 28 to 29 - LSO_Frm_Encap. LSO Frame Encapsulation
* definition. Only valid in TxD0. This field allows the host to
* indicate the Ethernet encapsulation of an outbound LSO packet.
* 00 - classic mode (best guess)
* 01 - LLC
* 10 - SNAP
* 11 - DIX
* If "classic mode" is selected, the adapter will attempt to
* decode the frame's Ethernet encapsulation by examining the L/T
* field as follows:
* <= 0x05DC LLC/SNAP encoding; must examine DSAP/SSAP to determine
* if packet is IPv4 or IPv6.
* 0x8870 Jumbo-SNAP encoding.
* 0x0800 IPv4 DIX encoding
* 0x86DD IPv6 DIX encoding
* others illegal encapsulation
* Bits 30 - LSO_ Flag. Large Send Offload (LSO) flag.
* Set to 1 to perform segmentation offload for TCP/UDP.
* This field is valid only in TxD0.
* Bits 31 to 33 - Reserved.
* Bits 34 to 47 - LSO_MSS. TCP/UDP LSO Maximum Segment Size
* This field is meaningful only when LSO_Control is non-zero.
* When LSO_Control is set to TCP_LSO, the single (possibly large)
* TCP segment described by this TxDL will be sent as a series of
* TCP segments each of which contains no more than LSO_MSS
* payload bytes.
* When LSO_Control is set to UDP_LSO, the single (possibly large)
* UDP datagram described by this TxDL will be sent as a series of
* UDP datagrams each of which contains no more than LSO_MSS
* payload bytes.
* All outgoing frames from this TxDL will have LSO_MSS bytes of UDP
* or TCP payload, with the exception of the last, which will have
* <= LSO_MSS bytes of payload.
* Bits 48 to 63 - Buffer_Size. Number of valid bytes in the
* buffer to be read by the adapter. This field is written by the
* host. A value of 0 is illegal.
* Bits 32 to 63 - This value is written by the adapter upon
* completion of a UDP or TCP LSO operation and indicates the number
* of UDP or TCP payload bytes that were transmitted. 0x0000 will be
* returned for any non-LSO operation.
* @control_1: Bits 0 to 4 - Reserved.
* Bit 5 - Tx_CKO_IPv4 Set to a '1' to enable IPv4 header checksum
* offload. This field is only valid in the first TxD of a frame.
* Bit 6 - Tx_CKO_TCP Set to a '1' to enable TCP checksum offload.
* This field is only valid in the first TxD of a frame (the TxD's
* gather code must be 10 or 11). The driver should only set this
* bit if it can guarantee that TCP is present.
* Bit 7 - Tx_CKO_UDP Set to a '1' to enable UDP checksum offload.
* This field is only valid in the first TxD of a frame (the TxD's
* gather code must be 10 or 11). The driver should only set this
* bit if it can guarantee that UDP is present.
* Bits 8 to 14 - Reserved.
* Bit 15 - Tx_VLAN_Enable VLAN tag insertion flag. Set to a '1' to
* instruct the adapter to insert the VLAN tag specified by the
* Tx_VLAN_Tag field. This field is only valid in the first TxD of
* a frame.
* Bits 16 to 31 - Tx_VLAN_Tag. Variable portion of the VLAN tag
* to be inserted into the frame by the adapter (the first two bytes
* of a VLAN tag are always 0x8100). This field is only valid if the
* Tx_VLAN_Enable field is set to '1'.
* Bits 32 to 33 - Reserved.
* Bits 34 to 39 - Tx_Int_Number. Indicates which Tx interrupt
* number the frame associated with. This field is written by the
* host. It is only valid in the first TxD of a frame.
* Bits 40 to 42 - Reserved.
* Bit 43 - Set to 1 to exclude the frame from bandwidth metering
* functions. This field is valid only in the first TxD
* of a frame.
* Bits 44 to 45 - Reserved.
* Bit 46 - Tx_Int_Per_List Set to a '1' to instruct the adapter to
* generate an interrupt as soon as all of the frames in the list
* have been transmitted. In order to have per-frame interrupts,
* the driver should place a maximum of one frame per list. This
* field is only valid in the first TxD of a frame.
* Bit 47 - Tx_Int_Utilization Set to a '1' to instruct the adapter
* to count the frame toward the utilization interrupt specified in
* the Tx_Int_Number field. This field is only valid in the first
* TxD of a frame.
* Bits 48 to 63 - Reserved.
* @buffer_pointer: Buffer start address.
* @host_control: Host_Control.Opaque 64bit data stored by driver inside the
* Titan descriptor prior to posting the latter on the fifo
* via vxge_hw_fifo_txdl_post().The %host_control is returned as is
* to the driver with each completed descriptor.
*
* Transmit descriptor (TxD).Fifo descriptor contains configured number
* (list) of TxDs. * For more details please refer to Titan User Guide,
* Section 5.4.2 "Transmit Descriptor (TxD) Format".
*/
struct vxge_hw_fifo_txd {
u64 control_0;
#define VXGE_HW_FIFO_TXD_LIST_OWN_ADAPTER vxge_mBIT(7)
#define VXGE_HW_FIFO_TXD_T_CODE_GET(ctrl0) vxge_bVALn(ctrl0, 12, 4)
#define VXGE_HW_FIFO_TXD_T_CODE(val) vxge_vBIT(val, 12, 4)
#define VXGE_HW_FIFO_TXD_T_CODE_UNUSED VXGE_HW_FIFO_T_CODE_UNUSED
#define VXGE_HW_FIFO_TXD_GATHER_CODE(val) vxge_vBIT(val, 22, 2)
#define VXGE_HW_FIFO_TXD_GATHER_CODE_FIRST VXGE_HW_FIFO_GATHER_CODE_FIRST
#define VXGE_HW_FIFO_TXD_GATHER_CODE_LAST VXGE_HW_FIFO_GATHER_CODE_LAST
#define VXGE_HW_FIFO_TXD_LSO_EN vxge_mBIT(30)
#define VXGE_HW_FIFO_TXD_LSO_MSS(val) vxge_vBIT(val, 34, 14)
#define VXGE_HW_FIFO_TXD_BUFFER_SIZE(val) vxge_vBIT(val, 48, 16)
u64 control_1;
#define VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN vxge_mBIT(5)
#define VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN vxge_mBIT(6)
#define VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN vxge_mBIT(7)
#define VXGE_HW_FIFO_TXD_VLAN_ENABLE vxge_mBIT(15)
#define VXGE_HW_FIFO_TXD_VLAN_TAG(val) vxge_vBIT(val, 16, 16)
#define VXGE_HW_FIFO_TXD_INT_NUMBER(val) vxge_vBIT(val, 34, 6)
#define VXGE_HW_FIFO_TXD_INT_TYPE_PER_LIST vxge_mBIT(46)
#define VXGE_HW_FIFO_TXD_INT_TYPE_UTILZ vxge_mBIT(47)
u64 buffer_pointer;
u64 host_control;
};
/**
* struct vxge_hw_ring_rxd_1 - One buffer mode RxD for ring
* @host_control: This field is exclusively for host use and is "readonly"
* from the adapter's perspective.
* @control_0:Bits 0 to 6 - RTH_Bucket get
* Bit 7 - Own Descriptor ownership bit. This bit is set to 1
* by the host, and is set to 0 by the adapter.
* 0 - Host owns RxD and buffer.
* 1 - The adapter owns RxD and buffer.
* Bit 8 - Fast_Path_Eligible When set, indicates that the
* received frame meets all of the criteria for fast path processing.
* The required criteria are as follows:
* !SYN &
* (Transfer_Code == "Transfer OK") &
* (!Is_IP_Fragment) &
* ((Is_IPv4 & computed_L3_checksum == 0xFFFF) |
* (Is_IPv6)) &
* ((Is_TCP & computed_L4_checksum == 0xFFFF) |
* (Is_UDP & (computed_L4_checksum == 0xFFFF |
* computed _L4_checksum == 0x0000)))
* (same meaning for all RxD buffer modes)
* Bit 9 - L3 Checksum Correct
* Bit 10 - L4 Checksum Correct
* Bit 11 - Reserved
* Bit 12 to 15 - This field is written by the adapter. It is
* used to report the status of the frame transfer to the host.
* 0x0 - Transfer OK
* 0x4 - RDA Failure During Transfer
* 0x5 - Unparseable Packet, such as unknown IPv6 header.
* 0x6 - Frame integrity error (FCS or ECC).
* 0x7 - Buffer Size Error. The provided buffer(s) were not
* appropriately sized and data loss occurred.
* 0x8 - Internal ECC Error. RxD corrupted.
* 0x9 - IPv4 Checksum error
* 0xA - TCP/UDP Checksum error
* 0xF - Unknown Error or Multiple Error. Indicates an
* unknown problem or that more than one of transfer codes is set.
* Bit 16 - SYN The adapter sets this field to indicate that
* the incoming frame contained a TCP segment with its SYN bit
* set and its ACK bit NOT set. (same meaning for all RxD buffer
* modes)
* Bit 17 - Is ICMP
* Bit 18 - RTH_SPDM_HIT Set to 1 if there was a match in the
* Socket Pair Direct Match Table and the frame was steered based
* on SPDM.
* Bit 19 - RTH_IT_HIT Set to 1 if there was a match in the
* Indirection Table and the frame was steered based on hash
* indirection.
* Bit 20 to 23 - RTH_HASH_TYPE Indicates the function (hash
* type) that was used to calculate the hash.
* Bit 19 - IS_VLAN Set to '1' if the frame was/is VLAN
* tagged.
* Bit 25 to 26 - ETHER_ENCAP Reflects the Ethernet encapsulation
* of the received frame.
* 0x0 - Ethernet DIX
* 0x1 - LLC
* 0x2 - SNAP (includes Jumbo-SNAP)
* 0x3 - IPX
* Bit 27 - IS_IPV4 Set to '1' if the frame contains an IPv4 packet.
* Bit 28 - IS_IPV6 Set to '1' if the frame contains an IPv6 packet.
* Bit 29 - IS_IP_FRAG Set to '1' if the frame contains a fragmented
* IP packet.
* Bit 30 - IS_TCP Set to '1' if the frame contains a TCP segment.
* Bit 31 - IS_UDP Set to '1' if the frame contains a UDP message.
* Bit 32 to 47 - L3_Checksum[0:15] The IPv4 checksum value that
* arrived with the frame. If the resulting computed IPv4 header
* checksum for the frame did not produce the expected 0xFFFF value,
* then the transfer code would be set to 0x9.
* Bit 48 to 63 - L4_Checksum[0:15] The TCP/UDP checksum value that
* arrived with the frame. If the resulting computed TCP/UDP checksum
* for the frame did not produce the expected 0xFFFF value, then the
* transfer code would be set to 0xA.
* @control_1:Bits 0 to 1 - Reserved
* Bits 2 to 15 - Buffer0_Size.This field is set by the host and
* eventually overwritten by the adapter. The host writes the
* available buffer size in bytes when it passes the descriptor to
* the adapter. When a frame is delivered the host, the adapter
* populates this field with the number of bytes written into the
* buffer. The largest supported buffer is 16, 383 bytes.
* Bit 16 to 47 - RTH Hash Value 32-bit RTH hash value. Only valid if
* RTH_HASH_TYPE (Control_0, bits 20:23) is nonzero.
* Bit 48 to 63 - VLAN_Tag[0:15] The contents of the variable portion
* of the VLAN tag, if one was detected by the adapter. This field is
* populated even if VLAN-tag stripping is enabled.
* @buffer0_ptr: Pointer to buffer. This field is populated by the driver.
*
* One buffer mode RxD for ring structure
*/
struct vxge_hw_ring_rxd_1 {
u64 host_control;
u64 control_0;
#define VXGE_HW_RING_RXD_RTH_BUCKET_GET(ctrl0) vxge_bVALn(ctrl0, 0, 7)
#define VXGE_HW_RING_RXD_LIST_OWN_ADAPTER vxge_mBIT(7)
#define VXGE_HW_RING_RXD_FAST_PATH_ELIGIBLE_GET(ctrl0) vxge_bVALn(ctrl0, 8, 1)
#define VXGE_HW_RING_RXD_L3_CKSUM_CORRECT_GET(ctrl0) vxge_bVALn(ctrl0, 9, 1)
#define VXGE_HW_RING_RXD_L4_CKSUM_CORRECT_GET(ctrl0) vxge_bVALn(ctrl0, 10, 1)
#define VXGE_HW_RING_RXD_T_CODE_GET(ctrl0) vxge_bVALn(ctrl0, 12, 4)
#define VXGE_HW_RING_RXD_T_CODE(val) vxge_vBIT(val, 12, 4)
#define VXGE_HW_RING_RXD_T_CODE_UNUSED VXGE_HW_RING_T_CODE_UNUSED
#define VXGE_HW_RING_RXD_SYN_GET(ctrl0) vxge_bVALn(ctrl0, 16, 1)
#define VXGE_HW_RING_RXD_IS_ICMP_GET(ctrl0) vxge_bVALn(ctrl0, 17, 1)
#define VXGE_HW_RING_RXD_RTH_SPDM_HIT_GET(ctrl0) vxge_bVALn(ctrl0, 18, 1)
#define VXGE_HW_RING_RXD_RTH_IT_HIT_GET(ctrl0) vxge_bVALn(ctrl0, 19, 1)
#define VXGE_HW_RING_RXD_RTH_HASH_TYPE_GET(ctrl0) vxge_bVALn(ctrl0, 20, 4)
#define VXGE_HW_RING_RXD_IS_VLAN_GET(ctrl0) vxge_bVALn(ctrl0, 24, 1)
#define VXGE_HW_RING_RXD_ETHER_ENCAP_GET(ctrl0) vxge_bVALn(ctrl0, 25, 2)
#define VXGE_HW_RING_RXD_FRAME_PROTO_GET(ctrl0) vxge_bVALn(ctrl0, 27, 5)
#define VXGE_HW_RING_RXD_L3_CKSUM_GET(ctrl0) vxge_bVALn(ctrl0, 32, 16)
#define VXGE_HW_RING_RXD_L4_CKSUM_GET(ctrl0) vxge_bVALn(ctrl0, 48, 16)
u64 control_1;
#define VXGE_HW_RING_RXD_1_BUFFER0_SIZE_GET(ctrl1) vxge_bVALn(ctrl1, 2, 14)
#define VXGE_HW_RING_RXD_1_BUFFER0_SIZE(val) vxge_vBIT(val, 2, 14)
#define VXGE_HW_RING_RXD_1_BUFFER0_SIZE_MASK vxge_vBIT(0x3FFF, 2, 14)
#define VXGE_HW_RING_RXD_1_RTH_HASH_VAL_GET(ctrl1) vxge_bVALn(ctrl1, 16, 32)
#define VXGE_HW_RING_RXD_VLAN_TAG_GET(ctrl1) vxge_bVALn(ctrl1, 48, 16)
u64 buffer0_ptr;
};
enum vxge_hw_rth_algoritms {
RTH_ALG_JENKINS = 0,
RTH_ALG_MS_RSS = 1,
RTH_ALG_CRC32C = 2
};
/**
* struct vxge_hw_rth_hash_types - RTH hash types.
* @hash_type_tcpipv4_en: Enables RTH field type HashTypeTcpIPv4
* @hash_type_ipv4_en: Enables RTH field type HashTypeIPv4
* @hash_type_tcpipv6_en: Enables RTH field type HashTypeTcpIPv6
* @hash_type_ipv6_en: Enables RTH field type HashTypeIPv6
* @hash_type_tcpipv6ex_en: Enables RTH field type HashTypeTcpIPv6Ex
* @hash_type_ipv6ex_en: Enables RTH field type HashTypeIPv6Ex
*
* Used to pass RTH hash types to rts_rts_set.
*
* See also: vxge_hw_vpath_rts_rth_set(), vxge_hw_vpath_rts_rth_get().
*/
struct vxge_hw_rth_hash_types {
u8 hash_type_tcpipv4_en:1,
hash_type_ipv4_en:1,
hash_type_tcpipv6_en:1,
hash_type_ipv6_en:1,
hash_type_tcpipv6ex_en:1,
hash_type_ipv6ex_en:1;
};
void vxge_hw_device_debug_set(
struct __vxge_hw_device *devh,
enum vxge_debug_level level,
u32 mask);
u32
vxge_hw_device_error_level_get(struct __vxge_hw_device *devh);
u32
vxge_hw_device_trace_level_get(struct __vxge_hw_device *devh);
/**
* vxge_hw_ring_rxd_size_get - Get the size of ring descriptor.
* @buf_mode: Buffer mode (1, 3 or 5)
*
* This function returns the size of RxD for given buffer mode
*/
static inline u32 vxge_hw_ring_rxd_size_get(u32 buf_mode)
{
return sizeof(struct vxge_hw_ring_rxd_1);
}
/**
* vxge_hw_ring_rxds_per_block_get - Get the number of rxds per block.
* @buf_mode: Buffer mode (1 buffer mode only)
*
* This function returns the number of RxD for RxD block for given buffer mode
*/
static inline u32 vxge_hw_ring_rxds_per_block_get(u32 buf_mode)
{
return (u32)((VXGE_HW_BLOCK_SIZE-16) /
sizeof(struct vxge_hw_ring_rxd_1));
}
/**
* vxge_hw_ring_rxd_1b_set - Prepare 1-buffer-mode descriptor.
* @rxdh: Descriptor handle.
* @dma_pointer: DMA address of a single receive buffer this descriptor
* should carry. Note that by the time vxge_hw_ring_rxd_1b_set is called,
* the receive buffer should be already mapped to the device
* @size: Size of the receive @dma_pointer buffer.
*
* Prepare 1-buffer-mode Rx descriptor for posting
* (via vxge_hw_ring_rxd_post()).
*
* This inline helper-function does not return any parameters and always
* succeeds.
*
*/
static inline
void vxge_hw_ring_rxd_1b_set(
void *rxdh,
dma_addr_t dma_pointer,
u32 size)
{
struct vxge_hw_ring_rxd_1 *rxdp = (struct vxge_hw_ring_rxd_1 *)rxdh;
rxdp->buffer0_ptr = dma_pointer;
rxdp->control_1 &= ~VXGE_HW_RING_RXD_1_BUFFER0_SIZE_MASK;
rxdp->control_1 |= VXGE_HW_RING_RXD_1_BUFFER0_SIZE(size);
}
/**
* vxge_hw_ring_rxd_1b_get - Get data from the completed 1-buf
* descriptor.
* @vpath_handle: Virtual Path handle.
* @rxdh: Descriptor handle.
* @dma_pointer: DMA address of a single receive buffer this descriptor
* carries. Returned by HW.
* @pkt_length: Length (in bytes) of the data in the buffer pointed by
*
* Retrieve protocol data from the completed 1-buffer-mode Rx descriptor.
* This inline helper-function uses completed descriptor to populate receive
* buffer pointer and other "out" parameters. The function always succeeds.
*
*/
static inline
void vxge_hw_ring_rxd_1b_get(
struct __vxge_hw_ring *ring_handle,
void *rxdh,
u32 *pkt_length)
{
struct vxge_hw_ring_rxd_1 *rxdp = (struct vxge_hw_ring_rxd_1 *)rxdh;
*pkt_length =
(u32)VXGE_HW_RING_RXD_1_BUFFER0_SIZE_GET(rxdp->control_1);
}
/**
* vxge_hw_ring_rxd_1b_info_get - Get extended information associated with
* a completed receive descriptor for 1b mode.
* @vpath_handle: Virtual Path handle.
* @rxdh: Descriptor handle.
* @rxd_info: Descriptor information
*
* Retrieve extended information associated with a completed receive descriptor.
*
*/
static inline
void vxge_hw_ring_rxd_1b_info_get(
struct __vxge_hw_ring *ring_handle,
void *rxdh,
struct vxge_hw_ring_rxd_info *rxd_info)
{
struct vxge_hw_ring_rxd_1 *rxdp = (struct vxge_hw_ring_rxd_1 *)rxdh;
rxd_info->syn_flag =
(u32)VXGE_HW_RING_RXD_SYN_GET(rxdp->control_0);
rxd_info->is_icmp =
(u32)VXGE_HW_RING_RXD_IS_ICMP_GET(rxdp->control_0);
rxd_info->fast_path_eligible =
(u32)VXGE_HW_RING_RXD_FAST_PATH_ELIGIBLE_GET(rxdp->control_0);
rxd_info->l3_cksum_valid =
(u32)VXGE_HW_RING_RXD_L3_CKSUM_CORRECT_GET(rxdp->control_0);
rxd_info->l3_cksum =
(u32)VXGE_HW_RING_RXD_L3_CKSUM_GET(rxdp->control_0);
rxd_info->l4_cksum_valid =
(u32)VXGE_HW_RING_RXD_L4_CKSUM_CORRECT_GET(rxdp->control_0);
rxd_info->l4_cksum =
(u32)VXGE_HW_RING_RXD_L4_CKSUM_GET(rxdp->control_0);
rxd_info->frame =
(u32)VXGE_HW_RING_RXD_ETHER_ENCAP_GET(rxdp->control_0);
rxd_info->proto =
(u32)VXGE_HW_RING_RXD_FRAME_PROTO_GET(rxdp->control_0);
rxd_info->is_vlan =
(u32)VXGE_HW_RING_RXD_IS_VLAN_GET(rxdp->control_0);
rxd_info->vlan =
(u32)VXGE_HW_RING_RXD_VLAN_TAG_GET(rxdp->control_1);
rxd_info->rth_bucket =
(u32)VXGE_HW_RING_RXD_RTH_BUCKET_GET(rxdp->control_0);
rxd_info->rth_it_hit =
(u32)VXGE_HW_RING_RXD_RTH_IT_HIT_GET(rxdp->control_0);
rxd_info->rth_spdm_hit =
(u32)VXGE_HW_RING_RXD_RTH_SPDM_HIT_GET(rxdp->control_0);
rxd_info->rth_hash_type =
(u32)VXGE_HW_RING_RXD_RTH_HASH_TYPE_GET(rxdp->control_0);
rxd_info->rth_value =
(u32)VXGE_HW_RING_RXD_1_RTH_HASH_VAL_GET(rxdp->control_1);
}
/**
* vxge_hw_ring_rxd_private_get - Get driver private per-descriptor data
* of 1b mode 3b mode ring.
* @rxdh: Descriptor handle.
*
* Returns: private driver info associated with the descriptor.
* driver requests per-descriptor space via vxge_hw_ring_attr.
*
*/
static inline void *vxge_hw_ring_rxd_private_get(void *rxdh)
{
struct vxge_hw_ring_rxd_1 *rxdp = (struct vxge_hw_ring_rxd_1 *)rxdh;
return (void *)(size_t)rxdp->host_control;
}
/**
* vxge_hw_fifo_txdl_cksum_set_bits - Offload checksum.
* @txdlh: Descriptor handle.
* @cksum_bits: Specifies which checksums are to be offloaded: IPv4,
* and/or TCP and/or UDP.
*
* Ask Titan to calculate IPv4 & transport checksums for _this_ transmit
* descriptor.
* This API is part of the preparation of the transmit descriptor for posting
* (via vxge_hw_fifo_txdl_post()). The related "preparation" APIs include
* vxge_hw_fifo_txdl_mss_set(), vxge_hw_fifo_txdl_buffer_set_aligned(),
* and vxge_hw_fifo_txdl_buffer_set().
* All these APIs fill in the fields of the fifo descriptor,
* in accordance with the Titan specification.
*
*/
static inline void vxge_hw_fifo_txdl_cksum_set_bits(void *txdlh, u64 cksum_bits)
{
struct vxge_hw_fifo_txd *txdp = (struct vxge_hw_fifo_txd *)txdlh;
txdp->control_1 |= cksum_bits;
}
/**
* vxge_hw_fifo_txdl_mss_set - Set MSS.
* @txdlh: Descriptor handle.
* @mss: MSS size for _this_ TCP connection. Passed by TCP stack down to the
* driver, which in turn inserts the MSS into the @txdlh.
*
* This API is part of the preparation of the transmit descriptor for posting
* (via vxge_hw_fifo_txdl_post()). The related "preparation" APIs include
* vxge_hw_fifo_txdl_buffer_set(), vxge_hw_fifo_txdl_buffer_set_aligned(),
* and vxge_hw_fifo_txdl_cksum_set_bits().
* All these APIs fill in the fields of the fifo descriptor,
* in accordance with the Titan specification.
*
*/
static inline void vxge_hw_fifo_txdl_mss_set(void *txdlh, int mss)
{
struct vxge_hw_fifo_txd *txdp = (struct vxge_hw_fifo_txd *)txdlh;
txdp->control_0 |= VXGE_HW_FIFO_TXD_LSO_EN;
txdp->control_0 |= VXGE_HW_FIFO_TXD_LSO_MSS(mss);
}
/**
* vxge_hw_fifo_txdl_vlan_set - Set VLAN tag.
* @txdlh: Descriptor handle.
* @vlan_tag: 16bit VLAN tag.
*
* Insert VLAN tag into specified transmit descriptor.
* The actual insertion of the tag into outgoing frame is done by the hardware.
*/
static inline void vxge_hw_fifo_txdl_vlan_set(void *txdlh, u16 vlan_tag)
{
struct vxge_hw_fifo_txd *txdp = (struct vxge_hw_fifo_txd *)txdlh;
txdp->control_1 |= VXGE_HW_FIFO_TXD_VLAN_ENABLE;
txdp->control_1 |= VXGE_HW_FIFO_TXD_VLAN_TAG(vlan_tag);
}
/**
* vxge_hw_fifo_txdl_private_get - Retrieve per-descriptor private data.
* @txdlh: Descriptor handle.
*
* Retrieve per-descriptor private data.
* Note that driver requests per-descriptor space via
* struct vxge_hw_fifo_attr passed to
* vxge_hw_vpath_open().
*
* Returns: private driver data associated with the descriptor.
*/
static inline void *vxge_hw_fifo_txdl_private_get(void *txdlh)
{
struct vxge_hw_fifo_txd *txdp = (struct vxge_hw_fifo_txd *)txdlh;
return (void *)(size_t)txdp->host_control;
}
/**
* struct vxge_hw_ring_attr - Ring open "template".
* @callback: Ring completion callback. HW invokes the callback when there
* are new completions on that ring. In many implementations
* the @callback executes in the hw interrupt context.
* @rxd_init: Ring's descriptor-initialize callback.
* See vxge_hw_ring_rxd_init_f{}.
* If not NULL, HW invokes the callback when opening
* the ring.
* @rxd_term: Ring's descriptor-terminate callback. If not NULL,
* HW invokes the callback when closing the corresponding ring.
* See also vxge_hw_ring_rxd_term_f{}.
* @userdata: User-defined "context" of _that_ ring. Passed back to the
* user as one of the @callback, @rxd_init, and @rxd_term arguments.
* @per_rxd_space: If specified (i.e., greater than zero): extra space
* reserved by HW per each receive descriptor.
* Can be used to store
* and retrieve on completion, information specific
* to the driver.
*
* Ring open "template". User fills the structure with ring
* attributes and passes it to vxge_hw_vpath_open().
*/
struct vxge_hw_ring_attr {
enum vxge_hw_status (*callback)(
struct __vxge_hw_ring *ringh,
void *rxdh,
u8 t_code,
void *userdata);
enum vxge_hw_status (*rxd_init)(
void *rxdh,
void *userdata);
void (*rxd_term)(
void *rxdh,
enum vxge_hw_rxd_state state,
void *userdata);
void *userdata;
u32 per_rxd_space;
};
/**
* function vxge_hw_fifo_callback_f - FIFO callback.
* @vpath_handle: Virtual path whose Fifo "containing" 1 or more completed
* descriptors.
* @txdlh: First completed descriptor.
* @txdl_priv: Pointer to per txdl space allocated
* @t_code: Transfer code, as per Titan User Guide.
* Returned by HW.
* @host_control: Opaque 64bit data stored by driver inside the Titan
* descriptor prior to posting the latter on the fifo
* via vxge_hw_fifo_txdl_post(). The @host_control is returned
* as is to the driver with each completed descriptor.
* @userdata: Opaque per-fifo data specified at fifo open
* time, via vxge_hw_vpath_open().
*
* Fifo completion callback (type declaration). A single per-fifo
* callback is specified at fifo open time, via
* vxge_hw_vpath_open(). Typically gets called as part of the processing
* of the Interrupt Service Routine.
*
* Fifo callback gets called by HW if, and only if, there is at least
* one new completion on a given fifo. Upon processing the first @txdlh driver
* is _supposed_ to continue consuming completions using:
* - vxge_hw_fifo_txdl_next_completed()
*
* Note that failure to process new completions in a timely fashion
* leads to VXGE_HW_INF_OUT_OF_DESCRIPTORS condition.
*
* Non-zero @t_code means failure to process transmit descriptor.
*
* In the "transmit" case the failure could happen, for instance, when the
* link is down, in which case Titan completes the descriptor because it
* is not able to send the data out.
*
* For details please refer to Titan User Guide.
*
* See also: vxge_hw_fifo_txdl_next_completed(), vxge_hw_fifo_txdl_term_f{}.
*/
/**
* function vxge_hw_fifo_txdl_term_f - Terminate descriptor callback.
* @txdlh: First completed descriptor.
* @txdl_priv: Pointer to per txdl space allocated
* @state: One of the enum vxge_hw_txdl_state{} enumerated states.
* @userdata: Per-fifo user data (a.k.a. context) specified at
* fifo open time, via vxge_hw_vpath_open().
*
* Terminate descriptor callback. Unless NULL is specified in the
* struct vxge_hw_fifo_attr{} structure passed to vxge_hw_vpath_open()),
* HW invokes the callback as part of closing fifo, prior to
* de-allocating the ring and associated data structures
* (including descriptors).
* driver should utilize the callback to (for instance) unmap
* and free DMA data buffers associated with the posted (state =
* VXGE_HW_TXDL_STATE_POSTED) descriptors,
* as well as other relevant cleanup functions.
*
* See also: struct vxge_hw_fifo_attr{}
*/
/**
* struct vxge_hw_fifo_attr - Fifo open "template".
* @callback: Fifo completion callback. HW invokes the callback when there
* are new completions on that fifo. In many implementations
* the @callback executes in the hw interrupt context.
* @txdl_term: Fifo's descriptor-terminate callback. If not NULL,
* HW invokes the callback when closing the corresponding fifo.
* See also vxge_hw_fifo_txdl_term_f{}.
* @userdata: User-defined "context" of _that_ fifo. Passed back to the
* user as one of the @callback, and @txdl_term arguments.
* @per_txdl_space: If specified (i.e., greater than zero): extra space
* reserved by HW per each transmit descriptor. Can be used to
* store, and retrieve on completion, information specific
* to the driver.
*
* Fifo open "template". User fills the structure with fifo
* attributes and passes it to vxge_hw_vpath_open().
*/
struct vxge_hw_fifo_attr {
enum vxge_hw_status (*callback)(
struct __vxge_hw_fifo *fifo_handle,
void *txdlh,
enum vxge_hw_fifo_tcode t_code,
void *userdata,
struct sk_buff ***skb_ptr,
int nr_skb, int *more);
void (*txdl_term)(
void *txdlh,
enum vxge_hw_txdl_state state,
void *userdata);
void *userdata;
u32 per_txdl_space;
};
/**
* struct vxge_hw_vpath_attr - Attributes of virtual path
* @vp_id: Identifier of Virtual Path
* @ring_attr: Attributes of ring for non-offload receive
* @fifo_attr: Attributes of fifo for non-offload transmit
*
* Attributes of virtual path. This structure is passed as parameter
* to the vxge_hw_vpath_open() routine to set the attributes of ring and fifo.
*/
struct vxge_hw_vpath_attr {
u32 vp_id;
struct vxge_hw_ring_attr ring_attr;
struct vxge_hw_fifo_attr fifo_attr;
};
enum vxge_hw_status __devinit vxge_hw_device_hw_info_get(
void __iomem *bar0,
struct vxge_hw_device_hw_info *hw_info);
enum vxge_hw_status __devinit vxge_hw_device_config_default_get(
struct vxge_hw_device_config *device_config);
/**
* vxge_hw_device_link_state_get - Get link state.
* @devh: HW device handle.
*
* Get link state.
* Returns: link state.
*/
static inline
enum vxge_hw_device_link_state vxge_hw_device_link_state_get(
struct __vxge_hw_device *devh)
{
return devh->link_state;
}
void vxge_hw_device_terminate(struct __vxge_hw_device *devh);
const u8 *
vxge_hw_device_serial_number_get(struct __vxge_hw_device *devh);
u16 vxge_hw_device_link_width_get(struct __vxge_hw_device *devh);
const u8 *
vxge_hw_device_product_name_get(struct __vxge_hw_device *devh);
enum vxge_hw_status __devinit vxge_hw_device_initialize(
struct __vxge_hw_device **devh,
struct vxge_hw_device_attr *attr,
struct vxge_hw_device_config *device_config);
enum vxge_hw_status vxge_hw_device_getpause_data(
struct __vxge_hw_device *devh,
u32 port,
u32 *tx,
u32 *rx);
enum vxge_hw_status vxge_hw_device_setpause_data(
struct __vxge_hw_device *devh,
u32 port,
u32 tx,
u32 rx);
static inline void *vxge_os_dma_malloc(struct pci_dev *pdev,
unsigned long size,
struct pci_dev **p_dmah,
struct pci_dev **p_dma_acch)
{
gfp_t flags;
void *vaddr;
unsigned long misaligned = 0;
int realloc_flag = 0;
*p_dma_acch = *p_dmah = NULL;
if (in_interrupt())
flags = GFP_ATOMIC | GFP_DMA;
else
flags = GFP_KERNEL | GFP_DMA;
realloc:
vaddr = kmalloc((size), flags);
if (vaddr == NULL)
return vaddr;
misaligned = (unsigned long)VXGE_ALIGN((unsigned long)vaddr,
VXGE_CACHE_LINE_SIZE);
if (realloc_flag)
goto out;
if (misaligned) {
/* misaligned, free current one and try allocating
* size + VXGE_CACHE_LINE_SIZE memory
*/
kfree((void *) vaddr);
size += VXGE_CACHE_LINE_SIZE;
realloc_flag = 1;
goto realloc;
}
out:
*(unsigned long *)p_dma_acch = misaligned;
vaddr = (void *)((u8 *)vaddr + misaligned);
return vaddr;
}
/*
* __vxge_hw_mempool_item_priv - will return pointer on per item private space
*/
static inline void*
__vxge_hw_mempool_item_priv(
struct vxge_hw_mempool *mempool,
u32 memblock_idx,
void *item,
u32 *memblock_item_idx)
{
ptrdiff_t offset;
void *memblock = mempool->memblocks_arr[memblock_idx];
offset = (u32)((u8 *)item - (u8 *)memblock);
vxge_assert(offset >= 0 && (u32)offset < mempool->memblock_size);
(*memblock_item_idx) = (u32) offset / mempool->item_size;
vxge_assert((*memblock_item_idx) < mempool->items_per_memblock);
return (u8 *)mempool->memblocks_priv_arr[memblock_idx] +
(*memblock_item_idx) * mempool->items_priv_size;
}
/*
* __vxge_hw_fifo_txdl_priv - Return the max fragments allocated
* for the fifo.
* @fifo: Fifo
* @txdp: Poniter to a TxD
*/
static inline struct __vxge_hw_fifo_txdl_priv *
__vxge_hw_fifo_txdl_priv(
struct __vxge_hw_fifo *fifo,
struct vxge_hw_fifo_txd *txdp)
{
return (struct __vxge_hw_fifo_txdl_priv *)
(((char *)((ulong)txdp->host_control)) +
fifo->per_txdl_space);
}
enum vxge_hw_status vxge_hw_vpath_open(
struct __vxge_hw_device *devh,
struct vxge_hw_vpath_attr *attr,
struct __vxge_hw_vpath_handle **vpath_handle);
enum vxge_hw_status vxge_hw_vpath_close(
struct __vxge_hw_vpath_handle *vpath_handle);
enum vxge_hw_status
vxge_hw_vpath_reset(
struct __vxge_hw_vpath_handle *vpath_handle);
enum vxge_hw_status
vxge_hw_vpath_recover_from_reset(
struct __vxge_hw_vpath_handle *vpath_handle);
void
vxge_hw_vpath_enable(struct __vxge_hw_vpath_handle *vp);
enum vxge_hw_status
vxge_hw_vpath_check_leak(struct __vxge_hw_ring *ringh);
enum vxge_hw_status vxge_hw_vpath_mtu_set(
struct __vxge_hw_vpath_handle *vpath_handle,
u32 new_mtu);
void
vxge_hw_vpath_rx_doorbell_init(struct __vxge_hw_vpath_handle *vp);
#ifndef readq
static inline u64 readq(void __iomem *addr)
{
u64 ret = 0;
ret = readl(addr + 4);
ret <<= 32;
ret |= readl(addr);
return ret;
}
#endif
#ifndef writeq
static inline void writeq(u64 val, void __iomem *addr)
{
writel((u32) (val), addr);
writel((u32) (val >> 32), (addr + 4));
}
#endif
static inline void __vxge_hw_pio_mem_write32_upper(u32 val, void __iomem *addr)
{
writel(val, addr + 4);
}
static inline void __vxge_hw_pio_mem_write32_lower(u32 val, void __iomem *addr)
{
writel(val, addr);
}
enum vxge_hw_status
vxge_hw_device_flick_link_led(struct __vxge_hw_device *devh, u64 on_off);
enum vxge_hw_status
vxge_hw_vpath_strip_fcs_check(struct __vxge_hw_device *hldev, u64 vpath_mask);
/**
* vxge_debug
* @level: level of debug verbosity.
* @mask: mask for the debug
* @buf: Circular buffer for tracing
* @fmt: printf like format string
*
* Provides logging facilities. Can be customized on per-module
* basis or/and with debug levels. Input parameters, except
* module and level, are the same as posix printf. This function
* may be compiled out if DEBUG macro was never defined.
* See also: enum vxge_debug_level{}.
*/
#define vxge_trace_aux(level, mask, fmt, ...) \
{\
vxge_os_vaprintf(level, mask, fmt, __VA_ARGS__);\
}
#define vxge_debug(module, level, mask, fmt, ...) { \
if ((level >= VXGE_TRACE && ((module & VXGE_DEBUG_TRACE_MASK) == module)) || \
(level >= VXGE_ERR && ((module & VXGE_DEBUG_ERR_MASK) == module))) {\
if ((mask & VXGE_DEBUG_MASK) == mask)\
vxge_trace_aux(level, mask, fmt, __VA_ARGS__); \
} \
}
#if (VXGE_COMPONENT_LL & VXGE_DEBUG_MODULE_MASK)
#define vxge_debug_ll(level, mask, fmt, ...) \
{\
vxge_debug(VXGE_COMPONENT_LL, level, mask, fmt, __VA_ARGS__);\
}
#else
#define vxge_debug_ll(level, mask, fmt, ...)
#endif
enum vxge_hw_status vxge_hw_vpath_rts_rth_itable_set(
struct __vxge_hw_vpath_handle **vpath_handles,
u32 vpath_count,
u8 *mtable,
u8 *itable,
u32 itable_size);
enum vxge_hw_status vxge_hw_vpath_rts_rth_set(
struct __vxge_hw_vpath_handle *vpath_handle,
enum vxge_hw_rth_algoritms algorithm,
struct vxge_hw_rth_hash_types *hash_type,
u16 bucket_size);
enum vxge_hw_status
__vxge_hw_device_is_privilaged(u32 host_type, u32 func_id);
#define VXGE_HW_MIN_SUCCESSIVE_IDLE_COUNT 5
#define VXGE_HW_MAX_POLLING_COUNT 100
int vxge_hw_vpath_wait_receive_idle(struct __vxge_hw_device *hldev, u32 vp_id);
void vxge_hw_device_wait_receive_idle(struct __vxge_hw_device *hldev);
#endif
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