qib7322.c File Reference

QLogic QIB7322 Infiniband HCA. More...

#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <assert.h>
#include <ipxe/io.h>
#include <ipxe/pci.h>
#include <ipxe/infiniband.h>
#include <ipxe/i2c.h>
#include <ipxe/bitbash.h>
#include <ipxe/malloc.h>
#include <ipxe/iobuf.h>
#include <ipxe/pcibackup.h>
#include "qib7322.h"

Go to the source code of this file.

Data Structures
struct	qib7322_send_buffers
	A QIB7322 send buffer set. More...
struct	qib7322_send_work_queue
	A QIB7322 send work queue. More...
struct	qib7322_recv_work_queue
	A QIB7322 receive work queue. More...
struct	qib7322
	A QIB7322 HCA. More...

Macros
#define	qib7322_readq(_qib7322, _ptr, _offset)
#define	qib7322_readq_array8b(_qib7322, _ptr, _offset, _idx)
#define	qib7322_readq_array64k(_qib7322, _ptr, _offset, _idx)
#define	qib7322_readq_port(_qib7322, _ptr, _offset, _port)
#define	qib7322_writeq(_qib7322, _ptr, _offset)
#define	qib7322_writeq_array8b(_qib7322, _ptr, _offset, _idx)
#define	qib7322_writeq_array64k(_qib7322, _ptr, _offset, _idx)
#define	qib7322_writeq_port(_qib7322, _ptr, _offset, _port)
#define	QIB7322_SEND_BUF_TOGGLE   0x8000
	Send buffer toggle bit.

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
static void	qib7322_readq (struct qib7322 *qib7322, uint64_t *qword, unsigned long offset)
	Read QIB7322 qword register.
static void	qib7322_writeq (struct qib7322 *qib7322, const uint64_t *qword, unsigned long offset)
	Write QIB7322 qword register.
static void	qib7322_writel (struct qib7322 *qib7322, uint32_t dword, unsigned long offset)
	Write QIB7322 dword register.
static const char *	qib7322_link_state_text (unsigned int link_state)
	Textual representation of link state.
static void	qib7322_link_state_changed (struct ib_device *ibdev)
	Handle link state change.
static int	qib7322_link_state_check (struct ib_device *ibdev, unsigned int new_link_state)
	Wait for link state change to take effect.
static int	qib7322_set_port_info (struct ib_device *ibdev, union ib_mad *mad)
	Set port information.
static int	qib7322_set_pkey_table (struct ib_device *ibdev __unused, union ib_mad *mad __unused)
	Set partition key table.
static int	qib7322_alloc_ctx (struct ib_device *ibdev, struct ib_queue_pair *qp)
	Allocate a context and set queue pair number.
static unsigned int	qib7322_ctx (struct ib_device *ibdev, struct ib_queue_pair *qp)
	Get queue pair context number.
static void	qib7322_free_ctx (struct ib_device *ibdev, struct ib_queue_pair *qp)
	Free a context.
static struct qib7322_send_buffers *	qib7322_create_send_bufs (struct qib7322 *qib7322, unsigned long base, unsigned int size, unsigned int start, unsigned int count)
	Create send buffer set.
static void	qib7322_destroy_send_bufs (struct qib7322 *qib7322 __unused, struct qib7322_send_buffers *send_bufs)
	Destroy send buffer set.
static int	qib7322_alloc_send_buf (struct qib7322 *qib7322, struct qib7322_send_buffers *send_bufs)
	Allocate a send buffer.
static void	qib7322_free_send_buf (struct qib7322 *qib7322 __unused, struct qib7322_send_buffers *send_bufs, unsigned int send_buf)
	Free a send buffer.
static int	qib7322_send_buf_in_use (struct qib7322 *qib7322, unsigned int send_buf)
	Check to see if send buffer is in use.
static unsigned long	qib7322_send_buffer_offset (struct qib7322 *qib7322 __unused, struct qib7322_send_buffers *send_bufs, unsigned int send_buf)
	Calculate starting offset for send buffer.
static int	qib7322_create_send_wq (struct ib_device *ibdev, struct ib_queue_pair *qp)
	Create send work queue.
static void	qib7322_destroy_send_wq (struct ib_device *ibdev __unused, struct ib_queue_pair *qp)
	Destroy send work queue.
static int	qib7322_init_send (struct qib7322 *qib7322)
	Initialise send datapath.
static void	qib7322_fini_send (struct qib7322 *qib7322)
	Shut down send datapath.
static int	qib7322_create_recv_wq (struct ib_device *ibdev, struct ib_queue_pair *qp)
	Create receive work queue.
static void	qib7322_destroy_recv_wq (struct ib_device *ibdev, struct ib_queue_pair *qp)
	Destroy receive work queue.
static int	qib7322_init_recv (struct qib7322 *qib7322)
	Initialise receive datapath.
static void	qib7322_fini_recv (struct qib7322 *qib7322 __unused)
	Shut down receive datapath.
static int	qib7322_create_cq (struct ib_device *ibdev, struct ib_completion_queue *cq)
	Create completion queue.
static void	qib7322_destroy_cq (struct ib_device *ibdev, struct ib_completion_queue *cq)
	Destroy completion queue.
static int	qib7322_create_qp (struct ib_device *ibdev, struct ib_queue_pair *qp)
	Create queue pair.
static int	qib7322_modify_qp (struct ib_device *ibdev, struct ib_queue_pair *qp)
	Modify queue pair.
static void	qib7322_destroy_qp (struct ib_device *ibdev, struct ib_queue_pair *qp)
	Destroy queue pair.
static int	qib7322_post_send (struct ib_device *ibdev, struct ib_queue_pair *qp, struct ib_address_vector *dest, struct io_buffer *iobuf)
	Post send work queue entry.
static void	qib7322_complete_send (struct ib_device *ibdev, struct ib_queue_pair *qp, unsigned int wqe_idx)
	Complete send work queue entry.
static void	qib7322_poll_send_wq (struct ib_device *ibdev, struct ib_queue_pair *qp)
	Poll send work queue.
static int	qib7322_post_recv (struct ib_device *ibdev, struct ib_queue_pair *qp, struct io_buffer *iobuf)
	Post receive work queue entry.
static void	qib7322_complete_recv (struct ib_device *ibdev, struct ib_queue_pair *qp, unsigned int header_offs)
	Complete receive work queue entry.
static void	qib7322_poll_recv_wq (struct ib_device *ibdev, struct ib_queue_pair *qp)
	Poll receive work queue.
static void	qib7322_poll_cq (struct ib_device *ibdev, struct ib_completion_queue *cq)
	Poll completion queue.
static void	qib7322_poll_eq (struct ib_device *ibdev)
	Poll event queue.
static unsigned int	qib7322_link_speed_supported (struct qib7322 *qib7322, unsigned int port)
	Determine supported link speeds.
static int	qib7322_open (struct ib_device *ibdev)
	Initialise Infiniband link.
static void	qib7322_close (struct ib_device *ibdev)
	Close Infiniband link.
static int	qib7322_mcast_attach (struct ib_device *ibdev, struct ib_queue_pair *qp, union ib_gid *gid)
	Attach to multicast group.
static void	qib7322_mcast_detach (struct ib_device *ibdev, struct ib_queue_pair *qp, union ib_gid *gid)
	Detach from multicast group.
static int	qib7322_i2c_read_bit (struct bit_basher *basher, unsigned int bit_id)
	Read QIB7322 I2C line status.
static void	qib7322_i2c_write_bit (struct bit_basher *basher, unsigned int bit_id, unsigned long data)
	Write QIB7322 I2C line status.
static int	qib7322_init_i2c (struct qib7322 *qib7322)
	Initialise QIB7322 I2C subsystem.
static int	qib7322_read_eeprom (struct qib7322 *qib7322)
	Read EEPROM parameters.
static int	qib7322_ahb_wait (struct qib7322 *qib7322)
	Wait for AHB transaction to complete.
static int	qib7322_ahb_request (struct qib7322 *qib7322, unsigned int location)
	Request ownership of the AHB.
static void	qib7322_ahb_release (struct qib7322 *qib7322)
	Release ownership of the AHB.
static int	qib7322_ahb_read (struct qib7322 *qib7322, unsigned int location, uint32_t *data)
	Read data via AHB.
static int	qib7322_ahb_write (struct qib7322 *qib7322, unsigned int location, uint32_t data)
	Write data via AHB.
static int	qib7322_ahb_mod_reg (struct qib7322 *qib7322, unsigned int location, uint32_t value, uint32_t mask)
	Read/modify/write AHB register.
static int	qib7322_ahb_mod_reg_all (struct qib7322 *qib7322, unsigned int reg, uint32_t value, uint32_t mask)
	Read/modify/write AHB register across all ports and channels.
static int	qib7322_init_ib_serdes (struct qib7322 *qib7322)
	Initialise the IB SerDes.
static void	qib7322_reset (struct qib7322 *qib7322, struct pci_device *pci)
	Reset QIB7322.
static int	qib7322_probe (struct pci_device *pci)
	Probe PCI device.
static void	qib7322_remove (struct pci_device *pci)
	Remove PCI device.

Variables
static struct ib_device_operations	qib7322_ib_operations
	QIB7322 Infiniband operations.
static unsigned int	qib7322_i2c_bits []
	QIB7322 I2C bit to GPIO mappings.
static struct bit_basher_operations	qib7322_i2c_basher_ops
	QIB7322 I2C bit-bashing interface operations.
static struct pci_device_id	qib7322_nics []
struct pci_driver qib7322_driver	__pci_driver

Detailed Description

QLogic QIB7322 Infiniband HCA.

Definition in file qib7322.c.

Macro Definition Documentation

qib7322_readq

#define qib7322_readq	(		_qib7322,
			_ptr,
			_offset )

Value:

        qib7322_readq ( (_qib7322), (_ptr)->u.qwords, (_offset) )

Definition at line 154 of file qib7322.c.

#define qib7322_readq( _qib7322, _ptr, _offset ) \
        qib7322_readq ( (_qib7322), (_ptr)->u.qwords, (_offset) )

Referenced by qib7322_ahb_read(), qib7322_ahb_wait(), qib7322_create_recv_wq(), qib7322_destroy_recv_wq(), qib7322_fini_send(), qib7322_i2c_read_bit(), qib7322_i2c_write_bit(), qib7322_init_ib_serdes(), qib7322_init_recv(), qib7322_init_send(), qib7322_link_speed_supported(), qib7322_link_state_changed(), and qib7322_probe().

qib7322_readq_array8b

#define qib7322_readq_array8b	(		_qib7322,
			_ptr,
			_offset,
			_idx )

Value:

        qib7322_readq ( (_qib7322), (_ptr), ( (_offset) + ( (_idx) * 8 ) ) )

Definition at line 156 of file qib7322.c.

#define qib7322_readq_array8b( _qib7322, _ptr, _offset, _idx ) \
        qib7322_readq ( (_qib7322), (_ptr), ( (_offset) + ( (_idx) * 8 ) ) )

qib7322_readq_array64k

#define qib7322_readq_array64k	(		_qib7322,
			_ptr,
			_offset,
			_idx )

Value:

        qib7322_readq ( (_qib7322), (_ptr), ( (_offset) + ( (_idx) * 65536 ) ) )

Definition at line 158 of file qib7322.c.

#define qib7322_readq_array64k( _qib7322, _ptr, _offset, _idx ) \
        qib7322_readq ( (_qib7322), (_ptr), ( (_offset) + ( (_idx) * 65536 ) ) )

qib7322_readq_port

#define qib7322_readq_port	(		_qib7322,
			_ptr,
			_offset,
			_port )

Value:

        qib7322_readq ( (_qib7322), (_ptr), ( (_offset) + ( (_port) * 4096 ) ) )

Definition at line 160 of file qib7322.c.

#define qib7322_readq_port( _qib7322, _ptr, _offset, _port ) \
        qib7322_readq ( (_qib7322), (_ptr), ( (_offset) + ( (_port) * 4096 ) ) )

Referenced by qib7322_close(), qib7322_create_recv_wq(), qib7322_destroy_recv_wq(), qib7322_link_state_changed(), qib7322_link_state_check(), qib7322_open(), qib7322_poll_eq(), and qib7322_set_port_info().

qib7322_writeq

#define qib7322_writeq	(		_qib7322,
			_ptr,
			_offset )

Value:

        qib7322_writeq ( (_qib7322), (_ptr)->u.qwords, (_offset) )

Definition at line 174 of file qib7322.c.

#define qib7322_writeq( _qib7322, _ptr, _offset ) \
        qib7322_writeq ( (_qib7322), (_ptr)->u.qwords, (_offset) )

Referenced by qib7322_ahb_read(), qib7322_ahb_release(), qib7322_ahb_request(), qib7322_ahb_write(), qib7322_create_recv_wq(), qib7322_destroy_recv_wq(), qib7322_fini_send(), qib7322_i2c_write_bit(), qib7322_init_ib_serdes(), qib7322_init_recv(), qib7322_init_send(), qib7322_link_state_changed(), qib7322_post_send(), and qib7322_reset().

qib7322_writeq_array8b

#define qib7322_writeq_array8b	(		_qib7322,
			_ptr,
			_offset,
			_idx )

Value:

        qib7322_writeq ( (_qib7322), (_ptr), ( (_offset) + ( (_idx) * 8 ) ) )

Definition at line 176 of file qib7322.c.

#define qib7322_writeq_array8b( _qib7322, _ptr, _offset, _idx ) \
        qib7322_writeq ( (_qib7322), (_ptr), ( (_offset) + ( (_idx) * 8 ) ) )

Referenced by qib7322_complete_recv(), qib7322_create_recv_wq(), qib7322_init_recv(), and qib7322_post_recv().

qib7322_writeq_array64k

#define qib7322_writeq_array64k	(		_qib7322,
			_ptr,
			_offset,
			_idx )

Value:

        qib7322_writeq ( (_qib7322), (_ptr), ( (_offset) + ( (_idx) * 65536 ) ))

Definition at line 178 of file qib7322.c.

#define qib7322_writeq_array64k( _qib7322, _ptr, _offset, _idx ) \
        qib7322_writeq ( (_qib7322), (_ptr), ( (_offset) + ( (_idx) * 65536 ) ))

Referenced by qib7322_create_recv_wq(), qib7322_poll_recv_wq(), and qib7322_post_recv().

qib7322_writeq_port

#define qib7322_writeq_port	(		_qib7322,
			_ptr,
			_offset,
			_port )

Value:

        qib7322_writeq ( (_qib7322), (_ptr), ( (_offset) + ( (_port) * 4096 ) ))

Definition at line 180 of file qib7322.c.

#define qib7322_writeq_port( _qib7322, _ptr, _offset, _port ) \
        qib7322_writeq ( (_qib7322), (_ptr), ( (_offset) + ( (_port) * 4096 ) ))

Referenced by qib7322_close(), qib7322_create_recv_wq(), qib7322_destroy_recv_wq(), qib7322_open(), qib7322_poll_eq(), and qib7322_set_port_info().

QIB7322_SEND_BUF_TOGGLE

#define QIB7322_SEND_BUF_TOGGLE   0x8000

Send buffer toggle bit.

We encode send buffers as 15 bits of send buffer index plus a single bit which should match the "check" bit in the SendBufAvail array.

Definition at line 433 of file qib7322.c.

Referenced by qib7322_alloc_send_buf(), qib7322_send_buf_in_use(), and qib7322_send_buffer_offset().

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

qib7322_readq()

void qib7322_readq ( struct qib7322 * qib7322, uint64_t * qword, unsigned long offset )

static

Read QIB7322 qword register.

Parameters

qib7322	QIB7322 device
qword	Register buffer to read into
offset	Register offset

Definition at line 150 of file qib7322.c.

                                                   {
        *qword = readq ( qib7322->regs + offset );
}

References offset, readq, and qib7322::regs.

qib7322_writeq()

void qib7322_writeq ( struct qib7322 * qib7322, const uint64_t * qword, unsigned long offset )

static

Write QIB7322 qword register.

Parameters

qib7322	QIB7322 device
qword	Register buffer to write
offset	Register offset

Definition at line 170 of file qib7322.c.

                                                    {
        writeq ( *qword, ( qib7322->regs + offset ) );
}

References offset, qib7322::regs, and writeq.

qib7322_writel()

void qib7322_writel ( struct qib7322 * qib7322, uint32_t dword, unsigned long offset )

static

Write QIB7322 dword register.

Parameters

qib7322	QIB7322 device
dword	Value to write
offset	Register offset

Definition at line 190 of file qib7322.c.

                                                    {
        writel ( dword, ( qib7322->regs + offset ) );
}

References offset, qib7322::regs, and writel.

Referenced by qib7322_post_send().

qib7322_link_state_text()

const char * qib7322_link_state_text ( unsigned int link_state )

static

Textual representation of link state.

Parameters

link_state

Link state

Return values

link_text

Link state text

Definition at line 208 of file qib7322.c.

                                                                        {
        switch ( link_state ) {
        case QIB7322_LINK_STATE_DOWN:            return "DOWN";
        case QIB7322_LINK_STATE_INIT:            return "INIT";
        case QIB7322_LINK_STATE_ARM:              return "ARM";
        case QIB7322_LINK_STATE_ACTIVE:                return "ACTIVE";
        case QIB7322_LINK_STATE_ACT_DEFER:  return "ACT_DEFER";
        default:                                return "UNKNOWN";
        }
}

References QIB7322_LINK_STATE_ACT_DEFER, QIB7322_LINK_STATE_ACTIVE, QIB7322_LINK_STATE_ARM, QIB7322_LINK_STATE_DOWN, and QIB7322_LINK_STATE_INIT.

Referenced by qib7322_link_state_changed(), qib7322_link_state_check(), and qib7322_set_port_info().

qib7322_link_state_changed()

void qib7322_link_state_changed ( struct ib_device * ibdev )

static

Handle link state change.

Parameters

qib7322

QIB7322 device

Definition at line 224 of file qib7322.c.

                                                                   {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
        struct QIB_7322_IBCStatusA_0 ibcstatusa;
        struct QIB_7322_EXTCtrl extctrl;
        unsigned int port = ( ibdev->port - QIB7322_PORT_BASE );
        unsigned int link_training_state;
        unsigned int link_state;
        unsigned int link_width;
        unsigned int link_speed;
        unsigned int link_speed_qdr;
        unsigned int green;
        unsigned int yellow;
 
        /* Read link state */
        qib7322_readq_port ( qib7322, &ibcstatusa,
                             QIB_7322_IBCStatusA_0_offset, port );
        link_training_state = BIT_GET ( &ibcstatusa, LinkTrainingState );
        link_state = BIT_GET ( &ibcstatusa, LinkState );
        link_width = BIT_GET ( &ibcstatusa, LinkWidthActive );
        link_speed = BIT_GET ( &ibcstatusa, LinkSpeedActive );
        link_speed_qdr = BIT_GET ( &ibcstatusa, LinkSpeedQDR );
        DBGC ( qib7322, "QIB7322 %p port %d training state %#x link state %s "
               "(%s %s)\n", qib7322, port, link_training_state,
               qib7322_link_state_text ( link_state ),
               ( link_speed_qdr ? "QDR" : ( link_speed ? "DDR" : "SDR" ) ),
               ( link_width ? "x4" : "x1" ) );
 
        /* Set LEDs according to link state */
        qib7322_readq ( qib7322, &extctrl, QIB_7322_EXTCtrl_offset );
        green = ( ( link_state >= QIB7322_LINK_STATE_INIT ) ? 1 : 0 );
        yellow = ( ( link_state >= QIB7322_LINK_STATE_ACTIVE ) ? 1 : 0 );
        if ( port == 0 ) {
                BIT_SET ( &extctrl, LEDPort0GreenOn, green );
                BIT_SET ( &extctrl, LEDPort0YellowOn, yellow );
        } else {
                BIT_SET ( &extctrl, LEDPort1GreenOn, green );
                BIT_SET ( &extctrl, LEDPort1YellowOn, yellow );
        }
        qib7322_writeq ( qib7322, &extctrl, QIB_7322_EXTCtrl_offset );
 
        /* Notify Infiniband core of link state change */
        ibdev->port_state = ( link_state + 1 );
        ibdev->link_width_active =
                ( link_width ? IB_LINK_WIDTH_4X : IB_LINK_WIDTH_1X );
        ibdev->link_speed_active =
                ( link_speed ? IB_LINK_SPEED_DDR : IB_LINK_SPEED_SDR );
        ib_link_state_changed ( ibdev );
}

References BIT_GET, BIT_SET, DBGC, ib_get_drvdata(), IB_LINK_SPEED_DDR, IB_LINK_SPEED_SDR, ib_link_state_changed(), IB_LINK_WIDTH_1X, IB_LINK_WIDTH_4X, qib7322::ibdev, ib_device::link_speed_active, ib_device::link_width_active, ib_device::port, port, ib_device::port_state, QIB7322_LINK_STATE_ACTIVE, QIB7322_LINK_STATE_INIT, qib7322_link_state_text(), QIB7322_PORT_BASE, qib7322_readq, qib7322_readq_port, qib7322_writeq, QIB_7322_EXTCtrl_offset, and QIB_7322_IBCStatusA_0_offset.

Referenced by qib7322_poll_eq(), and qib7322_set_port_info().

qib7322_link_state_check()

int qib7322_link_state_check ( struct ib_device * ibdev, unsigned int new_link_state )

static

Wait for link state change to take effect.

Parameters

ibdev	Infiniband device
new_link_state	Expected link state

Return values

rc	Return status code

Definition at line 280 of file qib7322.c.

                                                                    {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
        struct QIB_7322_IBCStatusA_0 ibcstatusa;
        unsigned int port = ( ibdev->port - QIB7322_PORT_BASE );
        unsigned int link_state;
        unsigned int i;
 
        for ( i = 0 ; i < QIB7322_LINK_STATE_MAX_WAIT_US ; i++ ) {
                qib7322_readq_port ( qib7322, &ibcstatusa,
                                     QIB_7322_IBCStatusA_0_offset, port );
                link_state = BIT_GET ( &ibcstatusa, LinkState );
                if ( link_state == new_link_state )
                        return 0;
                udelay ( 1 );
        }
 
        DBGC ( qib7322, "QIB7322 %p port %d timed out waiting for link state "
               "%s\n", qib7322, port, qib7322_link_state_text ( link_state ) );
        return -ETIMEDOUT;
}

References BIT_GET, DBGC, ETIMEDOUT, ib_get_drvdata(), qib7322::ibdev, ib_device::port, port, QIB7322_LINK_STATE_MAX_WAIT_US, qib7322_link_state_text(), QIB7322_PORT_BASE, qib7322_readq_port, QIB_7322_IBCStatusA_0_offset, and udelay().

Referenced by qib7322_set_port_info().

qib7322_set_port_info()

int qib7322_set_port_info ( struct ib_device * ibdev, union ib_mad * mad )

static

Set port information.

Parameters

ibdev	Infiniband device
mad	Set port information MAD

Definition at line 308 of file qib7322.c.

                                                       {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
        struct ib_port_info *port_info = &mad->smp.smp_data.port_info;
        struct QIB_7322_IBCCtrlA_0 ibcctrla;
        unsigned int port = ( ibdev->port - QIB7322_PORT_BASE );
        unsigned int port_state;
        unsigned int link_state;
 
        /* Set new link state */
        port_state = ( port_info->link_speed_supported__port_state & 0xf );
        if ( port_state ) {
                link_state = ( port_state - 1 );
                DBGC ( qib7322, "QIB7322 %p set link state to %s (%x)\n",
                       qib7322, qib7322_link_state_text ( link_state ),
                       link_state );
                qib7322_readq_port ( qib7322, &ibcctrla,
                                     QIB_7322_IBCCtrlA_0_offset, port );
                BIT_SET ( &ibcctrla, LinkCmd, link_state );
                qib7322_writeq_port ( qib7322, &ibcctrla,
                                      QIB_7322_IBCCtrlA_0_offset, port );
 
                /* Wait for link state change to take effect.  Ignore
                 * errors; the current link state will be returned via
                 * the GetResponse MAD.
                 */
                qib7322_link_state_check ( ibdev, link_state );
        }
 
        /* Detect and report link state change */
        qib7322_link_state_changed ( ibdev );
 
        return 0;
}

References BIT_SET, DBGC, ib_get_drvdata(), qib7322::ibdev, mad, ib_device::port, port, port_info, port_state, qib7322_link_state_changed(), qib7322_link_state_check(), qib7322_link_state_text(), QIB7322_PORT_BASE, qib7322_readq_port, qib7322_writeq_port, and QIB_7322_IBCCtrlA_0_offset.

qib7322_set_pkey_table()

int qib7322_set_pkey_table ( struct ib_device *ibdev __unused, union ib_mad *mad __unused )

static

Set partition key table.

Parameters

ibdev	Infiniband device
mad	Set partition key table MAD

Definition at line 349 of file qib7322.c.

                                                                 {
        /* Nothing to do */
        return 0;
}

References __unused, and mad.

qib7322_alloc_ctx()

int qib7322_alloc_ctx ( struct ib_device * ibdev, struct ib_queue_pair * qp )

static

Allocate a context and set queue pair number.

Parameters

ibdev	Infiniband device
qp	Queue pair

Return values

rc	Return status code

Definition at line 369 of file qib7322.c.

                                                          {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
        unsigned int port = ( ibdev->port - QIB7322_PORT_BASE );
        unsigned int ctx;
 
        for ( ctx = port ; ctx < QIB7322_NUM_CONTEXTS ; ctx += 2 ) {
 
                if ( ! qib7322->used_ctx[ctx] ) {
                        qib7322->used_ctx[ctx] = 1;
                        qp->qpn = ( ctx & ~0x01 );
                        DBGC2 ( qib7322, "QIB7322 %p port %d QPN %ld is CTX "
                                "%d\n", qib7322, port, qp->qpn, ctx );
                        return 0;
                }
        }
 
        DBGC ( qib7322, "QIB7322 %p port %d out of available contexts\n",
               qib7322, port );
        return -ENOENT;
}

References ctx, DBGC, DBGC2, ENOENT, ib_get_drvdata(), qib7322::ibdev, ib_device::port, port, QIB7322_NUM_CONTEXTS, QIB7322_PORT_BASE, qp, and qib7322::used_ctx.

Referenced by qib7322_create_qp().

qib7322_ctx()

unsigned int qib7322_ctx ( struct ib_device * ibdev, struct ib_queue_pair * qp )

static

Get queue pair context number.

Parameters

ibdev	Infiniband device
qp	Queue pair

Return values

ctx	Context index

Definition at line 398 of file qib7322.c.

                                                             {
        return ( qp->qpn + ( ibdev->port - QIB7322_PORT_BASE ) );
}

References qib7322::ibdev, ib_device::port, QIB7322_PORT_BASE, and qp.

Referenced by qib7322_create_qp(), qib7322_create_recv_wq(), qib7322_destroy_recv_wq(), qib7322_free_ctx(), qib7322_poll_recv_wq(), and qib7322_post_recv().

qib7322_free_ctx()

void qib7322_free_ctx ( struct ib_device * ibdev, struct ib_queue_pair * qp )

static

Free a context.

Parameters

qib7322	QIB7322 device
ctx	Context index

Definition at line 409 of file qib7322.c.

                                                          {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
        unsigned int port = ( ibdev->port - QIB7322_PORT_BASE );
        unsigned int ctx = qib7322_ctx ( ibdev, qp );
 
        qib7322->used_ctx[ctx] = 0;
        DBGC2 ( qib7322, "QIB7322 %p port %d CTX %d freed\n",
                qib7322, port, ctx );
}

References ctx, DBGC2, ib_get_drvdata(), qib7322::ibdev, ib_device::port, port, qib7322_ctx(), QIB7322_PORT_BASE, qp, and qib7322::used_ctx.

Referenced by qib7322_create_qp(), and qib7322_destroy_qp().

qib7322_create_send_bufs()

struct qib7322_send_buffers * qib7322_create_send_bufs ( struct qib7322 * qib7322, unsigned long base, unsigned int size, unsigned int start, unsigned int count )

static

Create send buffer set.

Parameters

qib7322	QIB7322 device
base	Send buffer base offset
size	Send buffer size
start	Index of first send buffer
count	Number of send buffers

Return values

send_bufs

Send buffer set

Definition at line 446 of file qib7322.c.

                                                {
        struct qib7322_send_buffers *send_bufs;
        unsigned int i;
 
        /* Allocate send buffer set */
        send_bufs = zalloc ( sizeof ( *send_bufs ) +
                             ( count * sizeof ( send_bufs->avail[0] ) ) );
        if ( ! send_bufs )
                return NULL;
 
        /* Populate send buffer set */
        send_bufs->base = base;
        send_bufs->size = size;
        send_bufs->start = start;
        send_bufs->count = count;
        for ( i = 0 ; i < count ; i++ )
                send_bufs->avail[i] = ( start + i );
 
        DBGC2 ( qib7322, "QIB7322 %p send buffer set %p [%d,%d] at %lx\n",
                qib7322, send_bufs, start, ( start + count - 1 ),
                send_bufs->base );
 
        return send_bufs;
}

References qib7322_send_buffers::avail, base, qib7322_send_buffers::base, count, qib7322_send_buffers::count, DBGC2, NULL, qib7322_send_buffers::size, size, qib7322_send_buffers::start, start, and zalloc().

Referenced by qib7322_init_send().

qib7322_destroy_send_bufs()

void qib7322_destroy_send_bufs ( struct qib7322 *qib7322 __unused, struct qib7322_send_buffers * send_bufs )

static

Destroy send buffer set.

Parameters

qib7322	QIB7322 device
send_bufs	Send buffer set

Definition at line 480 of file qib7322.c.

                                                                     {
        free ( send_bufs );
}

References __unused, and free.

Referenced by qib7322_fini_send(), and qib7322_init_send().

qib7322_alloc_send_buf()

int qib7322_alloc_send_buf ( struct qib7322 * qib7322, struct qib7322_send_buffers * send_bufs )

static

Allocate a send buffer.

Parameters

qib7322	QIB7322 device
send_bufs	Send buffer set

Return values

send_buf

Send buffer, or negative error

Definition at line 492 of file qib7322.c.

                                                                             {
        unsigned int used;
        unsigned int mask;
        unsigned int send_buf;
 
        used = ( send_bufs->cons - send_bufs->prod );
        if ( used >= send_bufs->count ) {
                DBGC ( qib7322, "QIB7322 %p send buffer set %p out of "
                       "buffers\n", qib7322, send_bufs );
                return -ENOBUFS;
        }
 
        mask = ( send_bufs->count - 1 );
        send_buf = send_bufs->avail[ send_bufs->cons++ & mask ];
        send_buf ^= QIB7322_SEND_BUF_TOGGLE;
        return send_buf;
}

References qib7322_send_buffers::avail, qib7322_send_buffers::cons, qib7322_send_buffers::count, DBGC, ENOBUFS, qib7322_send_buffers::prod, and QIB7322_SEND_BUF_TOGGLE.

Referenced by qib7322_post_send().

qib7322_free_send_buf()

void qib7322_free_send_buf ( struct qib7322 *qib7322 __unused, struct qib7322_send_buffers * send_bufs, unsigned int send_buf )

static

Free a send buffer.

Parameters

qib7322	QIB7322 device
send_bufs	Send buffer set
send_buf	Send buffer

Definition at line 518 of file qib7322.c.

                                                            {
        unsigned int mask;
 
        mask = ( send_bufs->count - 1 );
        send_bufs->avail[ send_bufs->prod++ & mask ] = send_buf;
}

References __unused, qib7322_send_buffers::avail, qib7322_send_buffers::count, and qib7322_send_buffers::prod.

Referenced by qib7322_complete_send().

qib7322_send_buf_in_use()

int qib7322_send_buf_in_use ( struct qib7322 * qib7322, unsigned int send_buf )

static

Check to see if send buffer is in use.

Parameters

qib7322	QIB7322 device
send_buf	Send buffer

Return values

in_use

Send buffer is in use

Definition at line 534 of file qib7322.c.

                                                             {
        unsigned int send_idx;
        unsigned int send_check;
        unsigned int inusecheck;
        unsigned int inuse;
        unsigned int check;
 
        send_idx = ( send_buf & ~QIB7322_SEND_BUF_TOGGLE );
        send_check = ( !! ( send_buf & QIB7322_SEND_BUF_TOGGLE ) );
        inusecheck = BIT_GET ( qib7322->sendbufavail, InUseCheck[send_idx] );
        inuse = ( !! ( inusecheck & 0x02 ) );
        check = ( !! ( inusecheck & 0x01 ) );
        return ( inuse || ( check != send_check ) );
}

References BIT_GET, QIB7322_SEND_BUF_TOGGLE, and qib7322::sendbufavail.

Referenced by qib7322_poll_send_wq().

qib7322_send_buffer_offset()

unsigned long qib7322_send_buffer_offset ( struct qib7322 *qib7322 __unused, struct qib7322_send_buffers * send_bufs, unsigned int send_buf )

static

Calculate starting offset for send buffer.

Parameters

qib7322	QIB7322 device
send_buf	Send buffer

Return values

offset

Starting offset

Definition at line 558 of file qib7322.c.

                                                     {
        unsigned int index;
 
        index = ( ( send_buf & ~QIB7322_SEND_BUF_TOGGLE ) - send_bufs->start );
        return ( send_bufs->base + ( index * send_bufs->size ) );
}

References __unused, qib7322_send_buffers::base, index, QIB7322_SEND_BUF_TOGGLE, qib7322_send_buffers::size, and qib7322_send_buffers::start.

Referenced by qib7322_post_send().

qib7322_create_send_wq()

int qib7322_create_send_wq ( struct ib_device * ibdev, struct ib_queue_pair * qp )

static

Create send work queue.

Parameters

ibdev	Infiniband device
qp	Queue pair

Definition at line 573 of file qib7322.c.

                                                               {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
        struct ib_work_queue *wq = &qp->send;
        struct qib7322_send_work_queue *qib7322_wq = ib_wq_get_drvdata ( wq );
        unsigned int port = ( ibdev->port - QIB7322_PORT_BASE );
 
        /* Select send buffer set */
        if ( qp->type == IB_QPT_SMI ) {
                if ( port == 0 ) {
                        qib7322_wq->send_bufs = qib7322->send_bufs_vl15_port0;
                } else {
                        qib7322_wq->send_bufs = qib7322->send_bufs_vl15_port1;
                }
        } else {
                qib7322_wq->send_bufs = qib7322->send_bufs_small;
        }
 
        /* Allocate space for send buffer usage list */
        qib7322_wq->used = zalloc ( qp->send.num_wqes *
                                    sizeof ( qib7322_wq->used[0] ) );
        if ( ! qib7322_wq->used )
                return -ENOMEM;
 
        /* Reset work queue */
        qib7322_wq->prod = 0;
        qib7322_wq->cons = 0;
 
        return 0;
}

References qib7322_send_work_queue::cons, ENOMEM, ib_get_drvdata(), IB_QPT_SMI, ib_wq_get_drvdata(), qib7322::ibdev, ib_device::port, port, qib7322_send_work_queue::prod, QIB7322_PORT_BASE, qp, qib7322_send_work_queue::send_bufs, qib7322::send_bufs_small, qib7322::send_bufs_vl15_port0, qib7322::send_bufs_vl15_port1, qib7322_send_work_queue::used, and zalloc().

Referenced by qib7322_create_qp().

qib7322_destroy_send_wq()

void qib7322_destroy_send_wq ( struct ib_device *ibdev __unused, struct ib_queue_pair * qp )

static

Destroy send work queue.

Parameters

ibdev	Infiniband device
qp	Queue pair

Definition at line 610 of file qib7322.c.

                                                                 {
        struct ib_work_queue *wq = &qp->send;
        struct qib7322_send_work_queue *qib7322_wq = ib_wq_get_drvdata ( wq );
 
        free ( qib7322_wq->used );
}

References __unused, free, ib_wq_get_drvdata(), qp, and qib7322_send_work_queue::used.

Referenced by qib7322_create_qp(), and qib7322_destroy_qp().

qib7322_init_send()

int qib7322_init_send ( struct qib7322 * qib7322 )

static

Initialise send datapath.

Parameters

qib7322

QIB7322 device

Return values

rc	Return status code

Definition at line 624 of file qib7322.c.

                                                         {
        struct QIB_7322_SendBufBase sendbufbase;
        struct QIB_7322_SendBufAvailAddr sendbufavailaddr;
        struct QIB_7322_SendCtrl sendctrl;
        struct QIB_7322_SendCtrl_0 sendctrlp;
        unsigned long baseaddr_smallpio;
        unsigned long baseaddr_largepio;
        unsigned long baseaddr_vl15_port0;
        unsigned long baseaddr_vl15_port1;
        int rc;
 
        /* Create send buffer sets */
        qib7322_readq ( qib7322, &sendbufbase, QIB_7322_SendBufBase_offset );
        baseaddr_smallpio = BIT_GET ( &sendbufbase, BaseAddr_SmallPIO );
        baseaddr_largepio = BIT_GET ( &sendbufbase, BaseAddr_LargePIO );
        baseaddr_vl15_port0 = ( baseaddr_largepio +
                                ( QIB7322_LARGE_SEND_BUF_SIZE *
                                  QIB7322_LARGE_SEND_BUF_COUNT ) );
        baseaddr_vl15_port1 = ( baseaddr_vl15_port0 +
                                QIB7322_VL15_PORT0_SEND_BUF_SIZE );
        qib7322->send_bufs_small =
                qib7322_create_send_bufs ( qib7322, baseaddr_smallpio,
                                           QIB7322_SMALL_SEND_BUF_SIZE,
                                           QIB7322_SMALL_SEND_BUF_START,
                                           QIB7322_SMALL_SEND_BUF_USED );
        if ( ! qib7322->send_bufs_small ) {
                rc = -ENOMEM;
                goto err_create_send_bufs_small;
        }
        qib7322->send_bufs_vl15_port0 =
                qib7322_create_send_bufs ( qib7322, baseaddr_vl15_port0,
                                           QIB7322_VL15_PORT0_SEND_BUF_SIZE,
                                           QIB7322_VL15_PORT0_SEND_BUF_START,
                                           QIB7322_VL15_PORT0_SEND_BUF_COUNT );
        if ( ! qib7322->send_bufs_vl15_port0 ) {
                rc = -ENOMEM;
                goto err_create_send_bufs_vl15_port0;
        }
        qib7322->send_bufs_vl15_port1 =
                qib7322_create_send_bufs ( qib7322, baseaddr_vl15_port1,
                                           QIB7322_VL15_PORT1_SEND_BUF_SIZE,
                                           QIB7322_VL15_PORT1_SEND_BUF_START,
                                           QIB7322_VL15_PORT1_SEND_BUF_COUNT );
        if ( ! qib7322->send_bufs_vl15_port1 ) {
                rc = -ENOMEM;
                goto err_create_send_bufs_vl15_port1;
        }
 
        /* Allocate space for the SendBufAvail array */
        qib7322->sendbufavail = malloc_phys ( sizeof ( *qib7322->sendbufavail ),
                                              QIB7322_SENDBUFAVAIL_ALIGN );
        if ( ! qib7322->sendbufavail ) {
                rc = -ENOMEM;
                goto err_alloc_sendbufavail;
        }
        memset ( qib7322->sendbufavail, 0, sizeof ( *qib7322->sendbufavail ) );
 
        /* Program SendBufAvailAddr into the hardware */
        memset ( &sendbufavailaddr, 0, sizeof ( sendbufavailaddr ) );
        BIT_FILL_1 ( &sendbufavailaddr, SendBufAvailAddr,
                     ( virt_to_bus ( qib7322->sendbufavail ) >> 6 ) );
        qib7322_writeq ( qib7322, &sendbufavailaddr,
                         QIB_7322_SendBufAvailAddr_offset );
 
        /* Enable sending */
        memset ( &sendctrlp, 0, sizeof ( sendctrlp ) );
        BIT_FILL_1 ( &sendctrlp, SendEnable, 1 );
        qib7322_writeq ( qib7322, &sendctrlp, QIB_7322_SendCtrl_0_offset );
        qib7322_writeq ( qib7322, &sendctrlp, QIB_7322_SendCtrl_1_offset );
 
        /* Enable DMA of SendBufAvail */
        memset ( &sendctrl, 0, sizeof ( sendctrl ) );
        BIT_FILL_1 ( &sendctrl, SendBufAvailUpd, 1 );
        qib7322_writeq ( qib7322, &sendctrl, QIB_7322_SendCtrl_offset );
 
        return 0;
 
        free_phys ( qib7322->sendbufavail, sizeof ( *qib7322->sendbufavail ) );
 err_alloc_sendbufavail:
        qib7322_destroy_send_bufs ( qib7322, qib7322->send_bufs_vl15_port1 );
 err_create_send_bufs_vl15_port1:
        qib7322_destroy_send_bufs ( qib7322, qib7322->send_bufs_vl15_port0 );
 err_create_send_bufs_vl15_port0:
        qib7322_destroy_send_bufs ( qib7322, qib7322->send_bufs_small );
 err_create_send_bufs_small:
        return rc;
}

References BIT_FILL_1, BIT_GET, ENOMEM, free_phys(), malloc_phys(), memset(), qib7322_create_send_bufs(), qib7322_destroy_send_bufs(), QIB7322_LARGE_SEND_BUF_COUNT, QIB7322_LARGE_SEND_BUF_SIZE, qib7322_readq, QIB7322_SENDBUFAVAIL_ALIGN, QIB7322_SMALL_SEND_BUF_SIZE, QIB7322_SMALL_SEND_BUF_START, QIB7322_SMALL_SEND_BUF_USED, QIB7322_VL15_PORT0_SEND_BUF_COUNT, QIB7322_VL15_PORT0_SEND_BUF_SIZE, QIB7322_VL15_PORT0_SEND_BUF_START, QIB7322_VL15_PORT1_SEND_BUF_COUNT, QIB7322_VL15_PORT1_SEND_BUF_SIZE, QIB7322_VL15_PORT1_SEND_BUF_START, qib7322_writeq, QIB_7322_SendBufAvailAddr_offset, QIB_7322_SendBufBase_offset, QIB_7322_SendCtrl_0_offset, QIB_7322_SendCtrl_1_offset, QIB_7322_SendCtrl_offset, rc, qib7322::send_bufs_small, qib7322::send_bufs_vl15_port0, qib7322::send_bufs_vl15_port1, qib7322::sendbufavail, and virt_to_bus().

Referenced by qib7322_probe().

qib7322_fini_send()

void qib7322_fini_send ( struct qib7322 * qib7322 )

static

Shut down send datapath.

Parameters

qib7322

QIB7322 device

Definition at line 717 of file qib7322.c.

                                                          {
        struct QIB_7322_SendCtrl sendctrl;
 
        /* Disable sending and DMA of SendBufAvail */
        memset ( &sendctrl, 0, sizeof ( sendctrl ) );
        qib7322_writeq ( qib7322, &sendctrl, QIB_7322_SendCtrl_offset );
        mb();
 
        /* Ensure hardware has seen this disable */
        qib7322_readq ( qib7322, &sendctrl, QIB_7322_SendCtrl_offset );
 
        free_phys ( qib7322->sendbufavail, sizeof ( *qib7322->sendbufavail ) );
        qib7322_destroy_send_bufs ( qib7322, qib7322->send_bufs_vl15_port1 );
        qib7322_destroy_send_bufs ( qib7322, qib7322->send_bufs_vl15_port0 );
        qib7322_destroy_send_bufs ( qib7322, qib7322->send_bufs_small );
}

References free_phys(), mb(), memset(), qib7322_destroy_send_bufs(), qib7322_readq, qib7322_writeq, QIB_7322_SendCtrl_offset, qib7322::send_bufs_small, qib7322::send_bufs_vl15_port0, qib7322::send_bufs_vl15_port1, and qib7322::sendbufavail.

Referenced by qib7322_probe(), and qib7322_remove().

qib7322_create_recv_wq()

int qib7322_create_recv_wq ( struct ib_device * ibdev, struct ib_queue_pair * qp )

static

Create receive work queue.

Parameters

ibdev	Infiniband device
qp	Queue pair

Return values

rc	Return status code

Definition at line 748 of file qib7322.c.

                                                               {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
        struct ib_work_queue *wq = &qp->recv;
        struct qib7322_recv_work_queue *qib7322_wq = ib_wq_get_drvdata ( wq );
        struct QIB_7322_RcvHdrAddr0 rcvhdraddr;
        struct QIB_7322_RcvHdrTailAddr0 rcvhdrtailaddr;
        struct QIB_7322_RcvHdrHead0 rcvhdrhead;
        struct QIB_7322_scalar rcvegrindexhead;
        struct QIB_7322_RcvCtrl rcvctrl;
        struct QIB_7322_RcvCtrl_P rcvctrlp;
        unsigned int port = ( ibdev->port - QIB7322_PORT_BASE );
        unsigned int ctx = qib7322_ctx ( ibdev, qp );
        int rc;
 
        /* Reset context information */
        memset ( &qib7322_wq->header_prod, 0,
                 sizeof ( qib7322_wq->header_prod ) );
        qib7322_wq->header_cons = 0;
        qib7322_wq->eager_prod = 0;
        qib7322_wq->eager_cons = 0;
 
        /* Allocate receive header buffer */
        qib7322_wq->header = malloc_phys ( QIB7322_RECV_HEADERS_SIZE,
                                           QIB7322_RECV_HEADERS_ALIGN );
        if ( ! qib7322_wq->header ) {
                rc = -ENOMEM;
                goto err_alloc_header;
        }
 
        /* Enable context in hardware */
        memset ( &rcvhdraddr, 0, sizeof ( rcvhdraddr ) );
        BIT_FILL_1 ( &rcvhdraddr, RcvHdrAddr,
                     ( virt_to_bus ( qib7322_wq->header ) >> 2 ) );
        qib7322_writeq_array8b ( qib7322, &rcvhdraddr,
                                 QIB_7322_RcvHdrAddr0_offset, ctx );
        memset ( &rcvhdrtailaddr, 0, sizeof ( rcvhdrtailaddr ) );
        BIT_FILL_1 ( &rcvhdrtailaddr, RcvHdrTailAddr,
                     ( virt_to_bus ( &qib7322_wq->header_prod ) >> 2 ) );
        qib7322_writeq_array8b ( qib7322, &rcvhdrtailaddr,
                                 QIB_7322_RcvHdrTailAddr0_offset, ctx );
        memset ( &rcvhdrhead, 0, sizeof ( rcvhdrhead ) );
        BIT_FILL_1 ( &rcvhdrhead, counter, 1 );
        qib7322_writeq_array64k ( qib7322, &rcvhdrhead,
                                  QIB_7322_RcvHdrHead0_offset, ctx );
        memset ( &rcvegrindexhead, 0, sizeof ( rcvegrindexhead ) );
        BIT_FILL_1 ( &rcvegrindexhead, Value, 1 );
        qib7322_writeq_array64k ( qib7322, &rcvegrindexhead,
                                  QIB_7322_RcvEgrIndexHead0_offset, ctx );
        qib7322_readq_port ( qib7322, &rcvctrlp,
                             QIB_7322_RcvCtrl_0_offset, port );
        BIT_SET ( &rcvctrlp, ContextEnable[ctx], 1 );
        qib7322_writeq_port ( qib7322, &rcvctrlp,
                              QIB_7322_RcvCtrl_0_offset, port );
        qib7322_readq ( qib7322, &rcvctrl, QIB_7322_RcvCtrl_offset );
        BIT_SET ( &rcvctrl, IntrAvail[ctx], 1 );
        qib7322_writeq ( qib7322, &rcvctrl, QIB_7322_RcvCtrl_offset );
 
        DBGC ( qib7322, "QIB7322 %p port %d QPN %ld CTX %d hdrs [%lx,%lx) prod "
               "%lx\n", qib7322, port, qp->qpn, ctx,
               virt_to_bus ( qib7322_wq->header ),
               ( virt_to_bus ( qib7322_wq->header )
                 + QIB7322_RECV_HEADERS_SIZE ),
               virt_to_bus ( &qib7322_wq->header_prod ) );
        return 0;
 
        free_phys ( qib7322_wq->header, QIB7322_RECV_HEADERS_SIZE );
 err_alloc_header:
        return rc;
}

References BIT_FILL_1, BIT_SET, ctx, DBGC, qib7322_recv_work_queue::eager_cons, qib7322_recv_work_queue::eager_prod, ENOMEM, free_phys(), qib7322_recv_work_queue::header, qib7322_recv_work_queue::header_cons, qib7322_recv_work_queue::header_prod, ib_get_drvdata(), ib_wq_get_drvdata(), qib7322::ibdev, malloc_phys(), memset(), ib_device::port, port, qib7322_ctx(), QIB7322_PORT_BASE, qib7322_readq, qib7322_readq_port, QIB7322_RECV_HEADERS_ALIGN, QIB7322_RECV_HEADERS_SIZE, qib7322_writeq, qib7322_writeq_array64k, qib7322_writeq_array8b, qib7322_writeq_port, QIB_7322_RcvCtrl_0_offset, QIB_7322_RcvCtrl_offset, QIB_7322_RcvEgrIndexHead0_offset, QIB_7322_RcvHdrAddr0_offset, QIB_7322_RcvHdrHead0_offset, QIB_7322_RcvHdrTailAddr0_offset, qp, rc, and virt_to_bus().

Referenced by qib7322_create_qp().

qib7322_destroy_recv_wq()

void qib7322_destroy_recv_wq ( struct ib_device * ibdev, struct ib_queue_pair * qp )

static

Destroy receive work queue.

Parameters

ibdev	Infiniband device
qp	Queue pair

Definition at line 825 of file qib7322.c.

                                                                 {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
        struct ib_work_queue *wq = &qp->recv;
        struct qib7322_recv_work_queue *qib7322_wq = ib_wq_get_drvdata ( wq );
        struct QIB_7322_RcvCtrl rcvctrl;
        struct QIB_7322_RcvCtrl_P rcvctrlp;
        unsigned int port = ( ibdev->port - QIB7322_PORT_BASE );
        unsigned int ctx = qib7322_ctx ( ibdev, qp );
 
        /* Disable context in hardware */
        qib7322_readq_port ( qib7322, &rcvctrlp,
                             QIB_7322_RcvCtrl_0_offset, port );
        BIT_SET ( &rcvctrlp, ContextEnable[ctx], 0 );
        qib7322_writeq_port ( qib7322, &rcvctrlp,
                              QIB_7322_RcvCtrl_0_offset, port );
        qib7322_readq ( qib7322, &rcvctrl, QIB_7322_RcvCtrl_offset );
        BIT_SET ( &rcvctrl, IntrAvail[ctx], 0 );
        qib7322_writeq ( qib7322, &rcvctrl, QIB_7322_RcvCtrl_offset );
 
        /* Make sure the hardware has seen that the context is disabled */
        qib7322_readq ( qib7322, &rcvctrl, QIB_7322_RcvCtrl_offset );
        mb();
 
        /* Free headers ring */
        free_phys ( qib7322_wq->header, QIB7322_RECV_HEADERS_SIZE );
}

References BIT_SET, ctx, free_phys(), qib7322_recv_work_queue::header, ib_get_drvdata(), ib_wq_get_drvdata(), qib7322::ibdev, mb(), ib_device::port, port, qib7322_ctx(), QIB7322_PORT_BASE, qib7322_readq, qib7322_readq_port, QIB7322_RECV_HEADERS_SIZE, qib7322_writeq, qib7322_writeq_port, QIB_7322_RcvCtrl_0_offset, QIB_7322_RcvCtrl_offset, and qp.

Referenced by qib7322_create_qp(), and qib7322_destroy_qp().

qib7322_init_recv()

int qib7322_init_recv ( struct qib7322 * qib7322 )

static

Initialise receive datapath.

Parameters

qib7322

QIB7322 device

Return values

rc	Return status code

Definition at line 859 of file qib7322.c.

                                                         {
        struct QIB_7322_RcvCtrl rcvctrl;
        struct QIB_7322_RcvCtrl_0 rcvctrlp;
        struct QIB_7322_RcvQPMapTableA_0 rcvqpmaptablea0;
        struct QIB_7322_RcvQPMapTableB_0 rcvqpmaptableb0;
        struct QIB_7322_RcvQPMapTableA_1 rcvqpmaptablea1;
        struct QIB_7322_RcvQPMapTableB_1 rcvqpmaptableb1;
        struct QIB_7322_RcvQPMulticastContext_0 rcvqpmcastctx0;
        struct QIB_7322_RcvQPMulticastContext_1 rcvqpmcastctx1;
        struct QIB_7322_scalar rcvegrbase;
        struct QIB_7322_scalar rcvhdrentsize;
        struct QIB_7322_scalar rcvhdrcnt;
        struct QIB_7322_RcvBTHQP_0 rcvbthqp;
        struct QIB_7322_RxCreditVL0_0 rxcreditvl;
        unsigned int contextcfg;
        unsigned long egrbase;
        unsigned int eager_array_size_kernel;
        unsigned int eager_array_size_user;
        unsigned int ctx;
 
        /* Select configuration based on number of contexts */
        switch ( QIB7322_NUM_CONTEXTS ) {
        case 6:
                contextcfg = QIB7322_CONTEXTCFG_6CTX;
                eager_array_size_kernel = QIB7322_EAGER_ARRAY_SIZE_6CTX_KERNEL;
                eager_array_size_user = QIB7322_EAGER_ARRAY_SIZE_6CTX_USER;
                break;
        case 10:
                contextcfg = QIB7322_CONTEXTCFG_10CTX;
                eager_array_size_kernel = QIB7322_EAGER_ARRAY_SIZE_10CTX_KERNEL;
                eager_array_size_user = QIB7322_EAGER_ARRAY_SIZE_10CTX_USER;
                break;
        case 18:
                contextcfg = QIB7322_CONTEXTCFG_18CTX;
                eager_array_size_kernel = QIB7322_EAGER_ARRAY_SIZE_18CTX_KERNEL;
                eager_array_size_user = QIB7322_EAGER_ARRAY_SIZE_18CTX_USER;
                break;
        default:
                build_assert ( 0 );
                return -EINVAL;
        }
 
        /* Configure number of contexts */
        memset ( &rcvctrl, 0, sizeof ( rcvctrl ) );
        BIT_FILL_2 ( &rcvctrl,
                     TailUpd, 1,
                     ContextCfg, contextcfg );
        qib7322_writeq ( qib7322, &rcvctrl, QIB_7322_RcvCtrl_offset );
 
        /* Map QPNs to contexts */
        memset ( &rcvctrlp, 0, sizeof ( rcvctrlp ) );
        BIT_FILL_3 ( &rcvctrlp,
                     RcvIBPortEnable, 1,
                     RcvQPMapEnable, 1,
                     RcvPartitionKeyDisable, 1 );
        qib7322_writeq ( qib7322, &rcvctrlp, QIB_7322_RcvCtrl_0_offset );
        qib7322_writeq ( qib7322, &rcvctrlp, QIB_7322_RcvCtrl_1_offset );
        memset ( &rcvqpmaptablea0, 0, sizeof ( rcvqpmaptablea0 ) );
        BIT_FILL_6 ( &rcvqpmaptablea0,
                     RcvQPMapContext0, 0,
                     RcvQPMapContext1, 2,
                     RcvQPMapContext2, 4,
                     RcvQPMapContext3, 6,
                     RcvQPMapContext4, 8,
                     RcvQPMapContext5, 10 );
        qib7322_writeq ( qib7322, &rcvqpmaptablea0,
                         QIB_7322_RcvQPMapTableA_0_offset );
        memset ( &rcvqpmaptableb0, 0, sizeof ( rcvqpmaptableb0 ) );
        BIT_FILL_3 ( &rcvqpmaptableb0,
                     RcvQPMapContext6, 12,
                     RcvQPMapContext7, 14,
                     RcvQPMapContext8, 16 );
        qib7322_writeq ( qib7322, &rcvqpmaptableb0,
                         QIB_7322_RcvQPMapTableB_0_offset );
        memset ( &rcvqpmaptablea1, 0, sizeof ( rcvqpmaptablea1 ) );
        BIT_FILL_6 ( &rcvqpmaptablea1,
                     RcvQPMapContext0, 1,
                     RcvQPMapContext1, 3,
                     RcvQPMapContext2, 5,
                     RcvQPMapContext3, 7,
                     RcvQPMapContext4, 9,
                     RcvQPMapContext5, 11 );
        qib7322_writeq ( qib7322, &rcvqpmaptablea1,
                         QIB_7322_RcvQPMapTableA_1_offset );
        memset ( &rcvqpmaptableb1, 0, sizeof ( rcvqpmaptableb1 ) );
        BIT_FILL_3 ( &rcvqpmaptableb1,
                     RcvQPMapContext6, 13,
                     RcvQPMapContext7, 15,
                     RcvQPMapContext8, 17 );
        qib7322_writeq ( qib7322, &rcvqpmaptableb1,
                         QIB_7322_RcvQPMapTableB_1_offset );
 
        /* Map multicast QPNs to contexts */
        memset ( &rcvqpmcastctx0, 0, sizeof ( rcvqpmcastctx0 ) );
        BIT_FILL_1 ( &rcvqpmcastctx0, RcvQpMcContext, 0 );
        qib7322_writeq ( qib7322, &rcvqpmcastctx0,
                         QIB_7322_RcvQPMulticastContext_0_offset );
        memset ( &rcvqpmcastctx1, 0, sizeof ( rcvqpmcastctx1 ) );
        BIT_FILL_1 ( &rcvqpmcastctx1, RcvQpMcContext, 1 );
        qib7322_writeq ( qib7322, &rcvqpmcastctx1,
                         QIB_7322_RcvQPMulticastContext_1_offset );
 
        /* Configure receive header buffer sizes */
        memset ( &rcvhdrcnt, 0, sizeof ( rcvhdrcnt ) );
        BIT_FILL_1 ( &rcvhdrcnt, Value, QIB7322_RECV_HEADER_COUNT );
        qib7322_writeq ( qib7322, &rcvhdrcnt, QIB_7322_RcvHdrCnt_offset );
        memset ( &rcvhdrentsize, 0, sizeof ( rcvhdrentsize ) );
        BIT_FILL_1 ( &rcvhdrentsize, Value, ( QIB7322_RECV_HEADER_SIZE >> 2 ) );
        qib7322_writeq ( qib7322, &rcvhdrentsize,
                         QIB_7322_RcvHdrEntSize_offset );
 
        /* Calculate eager array start addresses for each context */
        qib7322_readq ( qib7322, &rcvegrbase, QIB_7322_RcvEgrBase_offset );
        egrbase = BIT_GET ( &rcvegrbase, Value );
        for ( ctx = 0 ; ctx < QIB7322_MAX_PORTS ; ctx++ ) {
                qib7322->recv_wq[ctx].eager_array = egrbase;
                qib7322->recv_wq[ctx].eager_entries = eager_array_size_kernel;
                egrbase += ( eager_array_size_kernel *
                             sizeof ( struct QIB_7322_RcvEgr ) );
        }
        for ( ; ctx < QIB7322_NUM_CONTEXTS ; ctx++ ) {
                qib7322->recv_wq[ctx].eager_array = egrbase;
                qib7322->recv_wq[ctx].eager_entries = eager_array_size_user;
                egrbase += ( eager_array_size_user *
                             sizeof ( struct QIB_7322_RcvEgr ) );
        }
        for ( ctx = 0 ; ctx < QIB7322_NUM_CONTEXTS ; ctx++ ) {
                DBGC ( qib7322, "QIB7322 %p CTX %d eager array at %lx (%d "
                       "entries)\n", qib7322, ctx,
                       qib7322->recv_wq[ctx].eager_array,
                       qib7322->recv_wq[ctx].eager_entries );
        }
 
        /* Set the BTH QP for Infinipath packets to an unused value */
        memset ( &rcvbthqp, 0, sizeof ( rcvbthqp ) );
        BIT_FILL_1 ( &rcvbthqp, RcvBTHQP, QIB7322_QP_IDETH );
        qib7322_writeq ( qib7322, &rcvbthqp, QIB_7322_RcvBTHQP_0_offset );
        qib7322_writeq ( qib7322, &rcvbthqp, QIB_7322_RcvBTHQP_1_offset );
 
        /* Assign initial credits */
        memset ( &rxcreditvl, 0, sizeof ( rxcreditvl ) );
        BIT_FILL_1 ( &rxcreditvl, RxMaxCreditVL, QIB7322_MAX_CREDITS_VL0 );
        qib7322_writeq_array8b ( qib7322, &rxcreditvl,
                                 QIB_7322_RxCreditVL0_0_offset, 0 );
        qib7322_writeq_array8b ( qib7322, &rxcreditvl,
                                 QIB_7322_RxCreditVL0_1_offset, 0 );
        BIT_FILL_1 ( &rxcreditvl, RxMaxCreditVL, QIB7322_MAX_CREDITS_VL15 );
        qib7322_writeq_array8b ( qib7322, &rxcreditvl,
                                 QIB_7322_RxCreditVL0_0_offset, 15 );
        qib7322_writeq_array8b ( qib7322, &rxcreditvl,
                                 QIB_7322_RxCreditVL0_1_offset, 15 );
 
        return 0;
}

References BIT_FILL_1, BIT_FILL_2, BIT_FILL_3, BIT_FILL_6, BIT_GET, build_assert, ctx, DBGC, qib7322_recv_work_queue::eager_array, qib7322_recv_work_queue::eager_entries, EINVAL, memset(), QIB7322_CONTEXTCFG_10CTX, QIB7322_CONTEXTCFG_18CTX, QIB7322_CONTEXTCFG_6CTX, QIB7322_EAGER_ARRAY_SIZE_10CTX_KERNEL, QIB7322_EAGER_ARRAY_SIZE_10CTX_USER, QIB7322_EAGER_ARRAY_SIZE_18CTX_KERNEL, QIB7322_EAGER_ARRAY_SIZE_18CTX_USER, QIB7322_EAGER_ARRAY_SIZE_6CTX_KERNEL, QIB7322_EAGER_ARRAY_SIZE_6CTX_USER, QIB7322_MAX_CREDITS_VL0, QIB7322_MAX_CREDITS_VL15, QIB7322_MAX_PORTS, QIB7322_NUM_CONTEXTS, QIB7322_QP_IDETH, qib7322_readq, QIB7322_RECV_HEADER_COUNT, QIB7322_RECV_HEADER_SIZE, qib7322_writeq, qib7322_writeq_array8b, QIB_7322_RcvBTHQP_0_offset, QIB_7322_RcvBTHQP_1_offset, QIB_7322_RcvCtrl_0_offset, QIB_7322_RcvCtrl_1_offset, QIB_7322_RcvCtrl_offset, QIB_7322_RcvEgrBase_offset, QIB_7322_RcvHdrCnt_offset, QIB_7322_RcvHdrEntSize_offset, QIB_7322_RcvQPMapTableA_0_offset, QIB_7322_RcvQPMapTableA_1_offset, QIB_7322_RcvQPMapTableB_0_offset, QIB_7322_RcvQPMapTableB_1_offset, QIB_7322_RcvQPMulticastContext_0_offset, QIB_7322_RcvQPMulticastContext_1_offset, QIB_7322_RxCreditVL0_0_offset, QIB_7322_RxCreditVL0_1_offset, and qib7322::recv_wq.

Referenced by qib7322_probe().

qib7322_fini_recv()

void qib7322_fini_recv ( struct qib7322 *qib7322 __unused )

static

Shut down receive datapath.

Parameters

qib7322

QIB7322 device

Definition at line 1019 of file qib7322.c.

                                                                   {
        /* Nothing to do; all contexts were already disabled when the
         * queue pairs were destroyed
         */
}

References __unused.

Referenced by qib7322_probe(), and qib7322_remove().

qib7322_create_cq()

int qib7322_create_cq ( struct ib_device * ibdev, struct ib_completion_queue * cq )

static

Create completion queue.

Parameters

ibdev	Infiniband device
cq	Completion queue

Return values

rc	Return status code

Definition at line 1039 of file qib7322.c.

                                                                {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
        static int cqn;
 
        /* The hardware has no concept of completion queues.  We
         * simply use the association between CQs and WQs (already
         * handled by the IB core) to decide which WQs to poll.
         *
         * We do set a CQN, just to avoid confusing debug messages
         * from the IB core.
         */
        cq->cqn = ++cqn;
        DBGC ( qib7322, "QIB7322 %p CQN %ld created\n", qib7322, cq->cqn );
 
        return 0;
}

References cqn, ib_completion_queue::cqn, DBGC, ib_get_drvdata(), and qib7322::ibdev.

qib7322_destroy_cq()

void qib7322_destroy_cq ( struct ib_device * ibdev, struct ib_completion_queue * cq )

static

Destroy completion queue.

Parameters

ibdev	Infiniband device
cq	Completion queue

Definition at line 1063 of file qib7322.c.

                                                                  {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
 
        /* Nothing to do */
        DBGC ( qib7322, "QIB7322 %p CQN %ld destroyed\n", qib7322, cq->cqn );
}

References ib_completion_queue::cqn, DBGC, ib_get_drvdata(), and qib7322::ibdev.

qib7322_create_qp()

int qib7322_create_qp ( struct ib_device * ibdev, struct ib_queue_pair * qp )

static

Create queue pair.

Parameters

ibdev	Infiniband device
qp	Queue pair

Return values

rc	Return status code

Definition at line 1085 of file qib7322.c.

                                                          {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
        unsigned int ctx;
        int rc;
 
        /* Allocate a context and QPN */
        if ( ( rc = qib7322_alloc_ctx ( ibdev, qp ) ) != 0 )
                goto err_alloc_ctx;
        ctx = qib7322_ctx ( ibdev, qp );
 
        /* Set work-queue private data pointers */
        ib_wq_set_drvdata ( &qp->send, &qib7322->send_wq[ctx] );
        ib_wq_set_drvdata ( &qp->recv, &qib7322->recv_wq[ctx] );
 
        /* Create receive work queue */
        if ( ( rc = qib7322_create_recv_wq ( ibdev, qp ) ) != 0 )
                goto err_create_recv_wq;
 
        /* Create send work queue */
        if ( ( rc = qib7322_create_send_wq ( ibdev, qp ) ) != 0 )
                goto err_create_send_wq;
 
        return 0;
 
        qib7322_destroy_send_wq ( ibdev, qp );
 err_create_send_wq:
        qib7322_destroy_recv_wq ( ibdev, qp );
 err_create_recv_wq:
        qib7322_free_ctx ( ibdev, qp );
 err_alloc_ctx:
        return rc;
}

References ctx, ib_get_drvdata(), ib_wq_set_drvdata(), qib7322::ibdev, qib7322_alloc_ctx(), qib7322_create_recv_wq(), qib7322_create_send_wq(), qib7322_ctx(), qib7322_destroy_recv_wq(), qib7322_destroy_send_wq(), qib7322_free_ctx(), qp, rc, qib7322::recv_wq, and qib7322::send_wq.

qib7322_modify_qp()

int qib7322_modify_qp ( struct ib_device * ibdev, struct ib_queue_pair * qp )

static

Modify queue pair.

Parameters

ibdev	Infiniband device
qp	Queue pair

Return values

rc	Return status code

Definition at line 1126 of file qib7322.c.

                                                          {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
 
        /* Nothing to do; the hardware doesn't have a notion of queue
         * keys
         */
        DBGC2 ( qib7322, "QIB7322 %p QPN %ld modified\n", qib7322, qp->qpn );
        return 0;
}

References DBGC2, ib_get_drvdata(), qib7322::ibdev, and qp.

qib7322_destroy_qp()

void qib7322_destroy_qp ( struct ib_device * ibdev, struct ib_queue_pair * qp )

static

Destroy queue pair.

Parameters

ibdev	Infiniband device
qp	Queue pair

Definition at line 1143 of file qib7322.c.

                                                            {
 
        qib7322_destroy_send_wq ( ibdev, qp );
        qib7322_destroy_recv_wq ( ibdev, qp );
        qib7322_free_ctx ( ibdev, qp );
}

References qib7322::ibdev, qib7322_destroy_recv_wq(), qib7322_destroy_send_wq(), qib7322_free_ctx(), and qp.

qib7322_post_send()

int qib7322_post_send ( struct ib_device * ibdev, struct ib_queue_pair * qp, struct ib_address_vector * dest, struct io_buffer * iobuf )

static

Post send work queue entry.

Parameters

ibdev	Infiniband device
qp	Queue pair
dest	Destination address vector
iobuf	I/O buffer

Return values

rc	Return status code

Definition at line 1167 of file qib7322.c.

                                                         {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
        struct ib_work_queue *wq = &qp->send;
        struct qib7322_send_work_queue *qib7322_wq = ib_wq_get_drvdata ( wq );
        struct QIB_7322_SendPbc sendpbc;
        unsigned int port = ( ibdev->port - QIB7322_PORT_BASE );
        uint8_t header_buf[IB_MAX_HEADER_SIZE];
        struct io_buffer headers;
        int send_buf;
        unsigned long start_offset;
        unsigned long offset;
        size_t len;
        ssize_t frag_len;
        uint32_t *data;
 
        /* Allocate send buffer and calculate offset */
        send_buf = qib7322_alloc_send_buf ( qib7322, qib7322_wq->send_bufs );
        if ( send_buf < 0 )
                return send_buf;
        start_offset = offset =
                qib7322_send_buffer_offset ( qib7322, qib7322_wq->send_bufs,
                                             send_buf );
 
        /* Store I/O buffer and send buffer index */
        assert ( wq->iobufs[qib7322_wq->prod] == NULL );
        wq->iobufs[qib7322_wq->prod] = iobuf;
        qib7322_wq->used[qib7322_wq->prod] = send_buf;
 
        /* Construct headers */
        iob_populate ( &headers, header_buf, 0, sizeof ( header_buf ) );
        iob_reserve ( &headers, sizeof ( header_buf ) );
        ib_push ( ibdev, &headers, qp, iob_len ( iobuf ), dest );
 
        /* Calculate packet length */
        len = ( ( sizeof ( sendpbc ) + iob_len ( &headers ) +
                  iob_len ( iobuf ) + 3 ) & ~3 );
 
        /* Construct send per-buffer control word */
        memset ( &sendpbc, 0, sizeof ( sendpbc ) );
        BIT_FILL_3 ( &sendpbc,
                     LengthP1_toibc, ( ( len >> 2 ) - 1 ),
                     Port, port,
                     VL15, ( ( qp->type == IB_QPT_SMI ) ? 1 : 0 ) );
 
        /* Write SendPbc */
        DBG_DISABLE ( DBGLVL_IO );
        qib7322_writeq ( qib7322, &sendpbc, offset );
        offset += sizeof ( sendpbc );
 
        /* Write headers */
        for ( data = headers.data, frag_len = iob_len ( &headers ) ;
              frag_len > 0 ; data++, offset += 4, frag_len -= 4 ) {
                qib7322_writel ( qib7322, *data, offset );
        }
 
        /* Write data */
        for ( data = iobuf->data, frag_len = iob_len ( iobuf ) ;
              frag_len > 0 ; data++, offset += 4, frag_len -= 4 ) {
                qib7322_writel ( qib7322, *data, offset );
        }
        DBG_ENABLE ( DBGLVL_IO );
 
        assert ( ( start_offset + len ) == offset );
        DBGC2 ( qib7322, "QIB7322 %p QPN %ld TX %04x(%04x) posted [%lx,%lx)\n",
                qib7322, qp->qpn, send_buf, qib7322_wq->prod,
                start_offset, offset );
 
        /* Increment producer counter */
        qib7322_wq->prod = ( ( qib7322_wq->prod + 1 ) & ( wq->num_wqes - 1 ) );
 
        return 0;
}

References assert, BIT_FILL_3, data, io_buffer::data, DBG_DISABLE, DBG_ENABLE, DBGC2, DBGLVL_IO, dest, headers, ib_get_drvdata(), IB_MAX_HEADER_SIZE, ib_push(), IB_QPT_SMI, ib_wq_get_drvdata(), qib7322::ibdev, iob_len(), iob_populate(), iob_reserve, ib_work_queue::iobufs, len, memset(), NULL, ib_work_queue::num_wqes, offset, ib_device::port, port, qib7322_send_work_queue::prod, qib7322_alloc_send_buf(), QIB7322_PORT_BASE, qib7322_send_buffer_offset(), qib7322_writel(), qib7322_writeq, qp, qib7322_send_work_queue::send_bufs, and qib7322_send_work_queue::used.

qib7322_complete_send()

void qib7322_complete_send ( struct ib_device * ibdev, struct ib_queue_pair * qp, unsigned int wqe_idx )

static

Complete send work queue entry.

Parameters

ibdev	Infiniband device
qp	Queue pair
wqe_idx	Work queue entry index

Definition at line 1250 of file qib7322.c.

                                                           {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
        struct ib_work_queue *wq = &qp->send;
        struct qib7322_send_work_queue *qib7322_wq = ib_wq_get_drvdata ( wq );
        struct io_buffer *iobuf;
        unsigned int send_buf;
 
        /* Parse completion */
        send_buf = qib7322_wq->used[wqe_idx];
        DBGC2 ( qib7322, "QIB7322 %p QPN %ld TX %04x(%04x) complete\n",
                qib7322, qp->qpn, send_buf, wqe_idx );
 
        /* Complete work queue entry */
        iobuf = wq->iobufs[wqe_idx];
        assert ( iobuf != NULL );
        ib_complete_send ( ibdev, qp, iobuf, 0 );
        wq->iobufs[wqe_idx] = NULL;
 
        /* Free send buffer */
        qib7322_free_send_buf ( qib7322, qib7322_wq->send_bufs, send_buf );
}

References assert, DBGC2, ib_complete_send(), ib_get_drvdata(), ib_wq_get_drvdata(), qib7322::ibdev, ib_work_queue::iobufs, NULL, qib7322_free_send_buf(), qp, qib7322_send_work_queue::send_bufs, and qib7322_send_work_queue::used.

Referenced by qib7322_poll_send_wq().

qib7322_poll_send_wq()

void qib7322_poll_send_wq ( struct ib_device * ibdev, struct ib_queue_pair * qp )

static

Poll send work queue.

Parameters

ibdev	Infiniband device
qp	Queue pair

Definition at line 1280 of file qib7322.c.

                                                              {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
        struct ib_work_queue *wq = &qp->send;
        struct qib7322_send_work_queue *qib7322_wq = ib_wq_get_drvdata ( wq );
        unsigned int send_buf;
 
        /* Look for completions */
        while ( wq->fill ) {
 
                /* Check to see if send buffer has completed */
                send_buf = qib7322_wq->used[qib7322_wq->cons];
                if ( qib7322_send_buf_in_use ( qib7322, send_buf ) )
                        break;
 
                /* Complete this buffer */
                qib7322_complete_send ( ibdev, qp, qib7322_wq->cons );
 
                /* Increment consumer counter */
                qib7322_wq->cons = ( ( qib7322_wq->cons + 1 ) &
                                     ( wq->num_wqes - 1 ) );
        }
}

References qib7322_send_work_queue::cons, ib_work_queue::fill, ib_get_drvdata(), ib_wq_get_drvdata(), qib7322::ibdev, ib_work_queue::num_wqes, qib7322_complete_send(), qib7322_send_buf_in_use(), qp, and qib7322_send_work_queue::used.

Referenced by qib7322_poll_cq().

qib7322_post_recv()

int qib7322_post_recv ( struct ib_device * ibdev, struct ib_queue_pair * qp, struct io_buffer * iobuf )

static

Post receive work queue entry.

Parameters

ibdev	Infiniband device
qp	Queue pair
iobuf	I/O buffer

Return values

rc	Return status code

Definition at line 1312 of file qib7322.c.

                                                         {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
        struct ib_work_queue *wq = &qp->recv;
        struct qib7322_recv_work_queue *qib7322_wq = ib_wq_get_drvdata ( wq );
        struct QIB_7322_RcvEgr rcvegr;
        struct QIB_7322_scalar rcvegrindexhead;
        unsigned int ctx = qib7322_ctx ( ibdev, qp );
        physaddr_t addr;
        size_t len;
        unsigned int wqe_idx;
        unsigned int bufsize;
 
        /* Sanity checks */
        addr = virt_to_bus ( iobuf->data );
        len = iob_tailroom ( iobuf );
        if ( addr & ( QIB7322_EAGER_BUFFER_ALIGN - 1 ) ) {
                DBGC ( qib7322, "QIB7322 %p QPN %ld misaligned RX buffer "
                       "(%08lx)\n", qib7322, qp->qpn, addr );
                return -EINVAL;
        }
        if ( len != QIB7322_RECV_PAYLOAD_SIZE ) {
                DBGC ( qib7322, "QIB7322 %p QPN %ld wrong RX buffer size "
                       "(%zd)\n", qib7322, qp->qpn, len );
                return -EINVAL;
        }
 
        /* Calculate eager producer index and WQE index */
        wqe_idx = ( qib7322_wq->eager_prod & ( wq->num_wqes - 1 ) );
        assert ( wq->iobufs[wqe_idx] == NULL );
 
        /* Store I/O buffer */
        wq->iobufs[wqe_idx] = iobuf;
 
        /* Calculate buffer size */
        switch ( QIB7322_RECV_PAYLOAD_SIZE ) {
        case 2048:  bufsize = QIB7322_EAGER_BUFFER_2K;  break;
        case 4096:  bufsize = QIB7322_EAGER_BUFFER_4K;  break;
        case 8192:  bufsize = QIB7322_EAGER_BUFFER_8K;  break;
        case 16384: bufsize = QIB7322_EAGER_BUFFER_16K; break;
        case 32768: bufsize = QIB7322_EAGER_BUFFER_32K; break;
        case 65536: bufsize = QIB7322_EAGER_BUFFER_64K; break;
        default:    build_assert ( 0 );
                    bufsize = QIB7322_EAGER_BUFFER_NONE;
        }
 
        /* Post eager buffer */
        memset ( &rcvegr, 0, sizeof ( rcvegr ) );
        BIT_FILL_2 ( &rcvegr,
                     Addr, ( addr >> 11 ),
                     BufSize, bufsize );
        qib7322_writeq_array8b ( qib7322, &rcvegr, qib7322_wq->eager_array,
                                 qib7322_wq->eager_prod );
        DBGC2 ( qib7322, "QIB7322 %p QPN %ld RX egr %04x(%04x) posted "
                "[%lx,%lx)\n", qib7322, qp->qpn, qib7322_wq->eager_prod,
                wqe_idx, addr, ( addr + len ) );
 
        /* Increment producer index */
        qib7322_wq->eager_prod = ( ( qib7322_wq->eager_prod + 1 ) &
                                   ( qib7322_wq->eager_entries - 1 ) );
 
        /* Update head index */
        memset ( &rcvegrindexhead, 0, sizeof ( rcvegrindexhead ) );
        BIT_FILL_1 ( &rcvegrindexhead,
                     Value, ( ( qib7322_wq->eager_prod + 1 ) &
                              ( qib7322_wq->eager_entries - 1 ) ) );
        qib7322_writeq_array64k ( qib7322, &rcvegrindexhead,
                                  QIB_7322_RcvEgrIndexHead0_offset, ctx );
 
        return 0;
}

References addr, assert, BIT_FILL_1, BIT_FILL_2, bufsize, build_assert, ctx, io_buffer::data, DBGC, DBGC2, qib7322_recv_work_queue::eager_array, qib7322_recv_work_queue::eager_entries, qib7322_recv_work_queue::eager_prod, EINVAL, ib_get_drvdata(), ib_wq_get_drvdata(), qib7322::ibdev, iob_tailroom(), ib_work_queue::iobufs, len, memset(), NULL, ib_work_queue::num_wqes, qib7322_ctx(), QIB7322_EAGER_BUFFER_16K, QIB7322_EAGER_BUFFER_2K, QIB7322_EAGER_BUFFER_32K, QIB7322_EAGER_BUFFER_4K, QIB7322_EAGER_BUFFER_64K, QIB7322_EAGER_BUFFER_8K, QIB7322_EAGER_BUFFER_ALIGN, QIB7322_EAGER_BUFFER_NONE, QIB7322_RECV_PAYLOAD_SIZE, qib7322_writeq_array64k, qib7322_writeq_array8b, QIB_7322_RcvEgrIndexHead0_offset, qp, and virt_to_bus().

qib7322_complete_recv()

void qib7322_complete_recv ( struct ib_device * ibdev, struct ib_queue_pair * qp, unsigned int header_offs )

static

Complete receive work queue entry.

Parameters

ibdev	Infiniband device
qp	Queue pair
header_offs	Header offset

Definition at line 1392 of file qib7322.c.

                                                               {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
        struct ib_work_queue *wq = &qp->recv;
        struct qib7322_recv_work_queue *qib7322_wq = ib_wq_get_drvdata ( wq );
        struct QIB_7322_RcvHdrFlags *rcvhdrflags;
        struct QIB_7322_RcvEgr rcvegr;
        struct io_buffer headers;
        struct io_buffer *iobuf;
        struct ib_queue_pair *intended_qp;
        struct ib_address_vector dest;
        struct ib_address_vector source;
        unsigned int rcvtype;
        unsigned int pktlen;
        unsigned int egrindex;
        unsigned int useegrbfr;
        unsigned int iberr, mkerr, tiderr, khdrerr, mtuerr;
        unsigned int lenerr, parityerr, vcrcerr, icrcerr;
        unsigned int err;
        unsigned int hdrqoffset;
        unsigned int header_len;
        unsigned int padded_payload_len;
        unsigned int wqe_idx;
        size_t payload_len;
        int qp0;
        int rc;
 
        /* RcvHdrFlags are at the end of the header entry */
        rcvhdrflags = ( qib7322_wq->header + header_offs +
                        QIB7322_RECV_HEADER_SIZE - sizeof ( *rcvhdrflags ) );
        rcvtype = BIT_GET ( rcvhdrflags, RcvType );
        pktlen = ( BIT_GET ( rcvhdrflags, PktLen ) << 2 );
        egrindex = BIT_GET ( rcvhdrflags, EgrIndex );
        useegrbfr = BIT_GET ( rcvhdrflags, UseEgrBfr );
        hdrqoffset = ( BIT_GET ( rcvhdrflags, HdrqOffset ) << 2 );
        iberr = BIT_GET ( rcvhdrflags, IBErr );
        mkerr = BIT_GET ( rcvhdrflags, MKErr );
        tiderr = BIT_GET ( rcvhdrflags, TIDErr );
        khdrerr = BIT_GET ( rcvhdrflags, KHdrErr );
        mtuerr = BIT_GET ( rcvhdrflags, MTUErr );
        lenerr = BIT_GET ( rcvhdrflags, LenErr );
        parityerr = BIT_GET ( rcvhdrflags, ParityErr );
        vcrcerr = BIT_GET ( rcvhdrflags, VCRCErr );
        icrcerr = BIT_GET ( rcvhdrflags, ICRCErr );
        header_len = ( QIB7322_RECV_HEADER_SIZE - hdrqoffset -
                       sizeof ( *rcvhdrflags ) );
        padded_payload_len = ( pktlen - header_len - 4 /* ICRC */ );
        err = ( iberr | mkerr | tiderr | khdrerr | mtuerr |
                lenerr | parityerr | vcrcerr | icrcerr );
        /* IB header is placed immediately before RcvHdrFlags */
        iob_populate ( &headers, ( ( ( void * ) rcvhdrflags ) - header_len ),
                       header_len, header_len );
 
        /* Dump diagnostic information */
        DBGC2 ( qib7322, "QIB7322 %p QPN %ld RX egr %04x%s hdr %d type %d len "
                "%d(%d+%d+4)%s%s%s%s%s%s%s%s%s%s%s\n", qib7322, qp->qpn,
                egrindex, ( useegrbfr ? "" : "(unused)" ),
                ( header_offs / QIB7322_RECV_HEADER_SIZE ),
                rcvtype, pktlen, header_len, padded_payload_len,
                ( err ? " [Err" : "" ), ( iberr ? " IB" : "" ),
                ( mkerr ? " MK" : "" ), ( tiderr ? " TID" : "" ),
                ( khdrerr ? " KHdr" : "" ), ( mtuerr ? " MTU" : "" ),
                ( lenerr ? " Len" : "" ), ( parityerr ? " Parity" : ""),
                ( vcrcerr ? " VCRC" : "" ), ( icrcerr ? " ICRC" : "" ),
                ( err ? "]" : "" ) );
        DBGCP_HDA ( qib7322, hdrqoffset, headers.data,
                    ( header_len + sizeof ( *rcvhdrflags ) ) );
 
        /* Parse header to generate address vector */
        qp0 = ( qp->qpn == 0 );
        intended_qp = NULL;
        if ( ( rc = ib_pull ( ibdev, &headers, ( qp0 ? &intended_qp : NULL ),
                              &payload_len, &dest, &source ) ) != 0 ) {
                DBGC ( qib7322, "QIB7322 %p could not parse headers: %s\n",
                       qib7322, strerror ( rc ) );
                err = 1;
        }
        if ( ! intended_qp )
                intended_qp = qp;
 
        /* Complete this buffer and any skipped buffers.  Note that
         * when the hardware runs out of buffers, it will repeatedly
         * report the same buffer (the tail) as a TID error, and that
         * it also has a habit of sometimes skipping over several
         * buffers at once.
         */
        while ( 1 ) {
 
                /* If we have caught up to the producer counter, stop.
                 * This will happen when the hardware first runs out
                 * of buffers and starts reporting TID errors against
                 * the eager buffer it wants to use next.
                 */
                if ( qib7322_wq->eager_cons == qib7322_wq->eager_prod )
                        break;
 
                /* If we have caught up to where we should be after
                 * completing this egrindex, stop.  We phrase the test
                 * this way to avoid completing the entire ring when
                 * we receive the same egrindex twice in a row.
                 */
                if ( ( qib7322_wq->eager_cons ==
                       ( ( egrindex + 1 ) & ( qib7322_wq->eager_entries - 1 ))))
                        break;
 
                /* Identify work queue entry and corresponding I/O
                 * buffer.
                 */
                wqe_idx = ( qib7322_wq->eager_cons & ( wq->num_wqes - 1 ) );
                iobuf = wq->iobufs[wqe_idx];
                assert ( iobuf != NULL );
                wq->iobufs[wqe_idx] = NULL;
 
                /* Complete the eager buffer */
                if ( qib7322_wq->eager_cons == egrindex ) {
                        /* Completing the eager buffer described in
                         * this header entry.
                         */
                        if ( payload_len <= iob_tailroom ( iobuf ) ) {
                                iob_put ( iobuf, payload_len );
                                rc = ( err ?
                                       -EIO : ( useegrbfr ? 0 : -ECANCELED ) );
                        } else {
                                DBGC ( qib7322, "QIB7322 %p bad payload len "
                                       "%zd\n", qib7322, payload_len );
                                rc = -EPROTO;
                        }
                        /* Redirect to target QP if necessary */
                        if ( qp != intended_qp ) {
                                DBGC2 ( qib7322, "QIB7322 %p redirecting QPN "
                                        "%ld => %ld\n",
                                        qib7322, qp->qpn, intended_qp->qpn );
                                /* Compensate for incorrect fill levels */
                                qp->recv.fill--;
                                intended_qp->recv.fill++;
                        }
                        ib_complete_recv ( ibdev, intended_qp, &dest, &source,
                                           iobuf, rc );
                } else {
                        /* Completing on a skipped-over eager buffer */
                        ib_complete_recv ( ibdev, qp, &dest, &source, iobuf,
                                           -ECANCELED );
                }
 
                /* Clear eager buffer */
                memset ( &rcvegr, 0, sizeof ( rcvegr ) );
                qib7322_writeq_array8b ( qib7322, &rcvegr,
                                         qib7322_wq->eager_array,
                                         qib7322_wq->eager_cons );
 
                /* Increment consumer index */
                qib7322_wq->eager_cons = ( ( qib7322_wq->eager_cons + 1 ) &
                                           ( qib7322_wq->eager_entries - 1 ) );
        }
}

References assert, BIT_GET, DBGC, DBGC2, DBGCP_HDA, dest, qib7322_recv_work_queue::eager_array, qib7322_recv_work_queue::eager_cons, qib7322_recv_work_queue::eager_entries, qib7322_recv_work_queue::eager_prod, ECANCELED, EIO, EPROTO, ib_work_queue::fill, qib7322_recv_work_queue::header, headers, ib_complete_recv(), ib_get_drvdata(), ib_pull(), ib_wq_get_drvdata(), qib7322::ibdev, iob_populate(), iob_put, iob_tailroom(), ib_work_queue::iobufs, memset(), NULL, ib_work_queue::num_wqes, QIB7322_RECV_HEADER_SIZE, qib7322_writeq_array8b, qp, ib_queue_pair::qpn, rc, ib_queue_pair::recv, and strerror().

Referenced by qib7322_poll_recv_wq().

qib7322_poll_recv_wq()

void qib7322_poll_recv_wq ( struct ib_device * ibdev, struct ib_queue_pair * qp )

static

Poll receive work queue.

Parameters

ibdev	Infiniband device
qp	Queue pair

Definition at line 1555 of file qib7322.c.

                                                              {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
        struct ib_work_queue *wq = &qp->recv;
        struct qib7322_recv_work_queue *qib7322_wq = ib_wq_get_drvdata ( wq );
        struct QIB_7322_RcvHdrHead0 rcvhdrhead;
        unsigned int ctx = qib7322_ctx ( ibdev, qp );
        unsigned int header_prod;
 
        /* Check for received packets */
        header_prod = ( BIT_GET ( &qib7322_wq->header_prod, Value ) << 2 );
        if ( header_prod == qib7322_wq->header_cons )
                return;
 
        /* Process all received packets */
        while ( qib7322_wq->header_cons != header_prod ) {
 
                /* Complete the receive */
                qib7322_complete_recv ( ibdev, qp, qib7322_wq->header_cons );
 
                /* Increment the consumer offset */
                qib7322_wq->header_cons += QIB7322_RECV_HEADER_SIZE;
                qib7322_wq->header_cons %= QIB7322_RECV_HEADERS_SIZE;
 
                /* QIB7322 has only one send buffer per port for VL15,
                 * which almost always leads to send buffer exhaustion
                 * and dropped MADs.  Mitigate this by refusing to
                 * process more than one VL15 MAD per poll, which will
                 * enforce interleaved TX/RX polls.
                 */
                if ( qp->type == IB_QPT_SMI )
                        break;
        }
 
        /* Update consumer offset */
        memset ( &rcvhdrhead, 0, sizeof ( rcvhdrhead ) );
        BIT_FILL_2 ( &rcvhdrhead,
                     RcvHeadPointer, ( qib7322_wq->header_cons >> 2 ),
                     counter, 1 );
        qib7322_writeq_array64k ( qib7322, &rcvhdrhead,
                                  QIB_7322_RcvHdrHead0_offset, ctx );
}

References BIT_FILL_2, BIT_GET, ctx, qib7322_recv_work_queue::header_cons, qib7322_recv_work_queue::header_prod, ib_get_drvdata(), IB_QPT_SMI, ib_wq_get_drvdata(), qib7322::ibdev, memset(), qib7322_complete_recv(), qib7322_ctx(), QIB7322_RECV_HEADER_SIZE, QIB7322_RECV_HEADERS_SIZE, qib7322_writeq_array64k, QIB_7322_RcvHdrHead0_offset, and qp.

Referenced by qib7322_poll_cq().

qib7322_poll_cq()

void qib7322_poll_cq ( struct ib_device * ibdev, struct ib_completion_queue * cq )

static

Poll completion queue.

Parameters

ibdev	Infiniband device
cq	Completion queue

Definition at line 1604 of file qib7322.c.

                                                               {
        struct ib_work_queue *wq;
 
        /* Poll associated send and receive queues */
        list_for_each_entry ( wq, &cq->work_queues, list ) {
                if ( wq->is_send ) {
                        qib7322_poll_send_wq ( ibdev, wq->qp );
                } else {
                        qib7322_poll_recv_wq ( ibdev, wq->qp );
                }
        }
}

References ib_work_queue::cq, ib_work_queue::is_send, ib_work_queue::list, list_for_each_entry, qib7322_poll_recv_wq(), qib7322_poll_send_wq(), ib_work_queue::qp, and ib_completion_queue::work_queues.

qib7322_poll_eq()

void qib7322_poll_eq ( struct ib_device * ibdev )

static

Poll event queue.

Parameters

ibdev

Infiniband device

Definition at line 1630 of file qib7322.c.

                                                        {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
        struct QIB_7322_ErrStatus_0 errstatus;
        unsigned int port = ( ibdev->port - QIB7322_PORT_BASE );
 
        /* Check for and clear status bits */
        DBG_DISABLE ( DBGLVL_IO );
        qib7322_readq_port ( qib7322, &errstatus,
                             QIB_7322_ErrStatus_0_offset, port );
        if ( errstatus.u.qwords[0] ) {
                DBGC ( qib7322, "QIB7322 %p port %d status %08x%08x\n", qib7322,
                       port, errstatus.u.dwords[1],  errstatus.u.dwords[0] );
                qib7322_writeq_port ( qib7322, &errstatus,
                                      QIB_7322_ErrClear_0_offset, port );
        }
        DBG_ENABLE ( DBGLVL_IO );
 
        /* Check for link status changes */
        if ( BIT_GET ( &errstatus, IBStatusChanged ) )
                qib7322_link_state_changed ( ibdev );
}

References BIT_GET, DBG_DISABLE, DBG_ENABLE, DBGC, DBGLVL_IO, ib_get_drvdata(), qib7322::ibdev, ib_device::port, port, qib7322_link_state_changed(), QIB7322_PORT_BASE, qib7322_readq_port, qib7322_writeq_port, QIB_7322_ErrClear_0_offset, and QIB_7322_ErrStatus_0_offset.

qib7322_link_speed_supported()

unsigned int qib7322_link_speed_supported ( struct qib7322 * qib7322, unsigned int port )

static

Determine supported link speeds.

Parameters

qib7322

QIB7322 device

Return values

supported

Supported link speeds

Definition at line 1665 of file qib7322.c.

                                                                       {
        struct QIB_7322_feature_mask features;
        struct QIB_7322_Revision revision;
        unsigned int supported;
        unsigned int boardid;
 
        /* Read the active feature mask */
        qib7322_readq ( qib7322, &features,
                        QIB_7322_active_feature_mask_offset );
        switch ( port ) {
        case 0 :
                supported = BIT_GET ( &features, Port0_Link_Speed_Supported );
                break;
        case 1 :
                supported = BIT_GET ( &features, Port1_Link_Speed_Supported );
                break;
        default:
                DBGC ( qib7322, "QIB7322 %p port %d is invalid\n",
                       qib7322, port );
                supported = 0;
                break;
        }
 
        /* Apply hacks for specific board IDs */
        qib7322_readq ( qib7322, &revision, QIB_7322_Revision_offset );
        boardid = BIT_GET ( &revision, BoardID );
        switch ( boardid ) {
        case QIB7322_BOARD_QMH7342 :
                DBGC2 ( qib7322, "QIB7322 %p is a QMH7342; forcing QDR-only\n",
                        qib7322 );
                supported = IB_LINK_SPEED_QDR;
                break;
        default:
                /* Do nothing */
                break;
        }
 
        DBGC2 ( qib7322, "QIB7322 %p port %d %s%s%s%s\n", qib7322, port,
                ( supported ? "supports" : "disabled" ),
                ( ( supported & IB_LINK_SPEED_SDR ) ? " SDR" : "" ),
                ( ( supported & IB_LINK_SPEED_DDR ) ? " DDR" : "" ),
                ( ( supported & IB_LINK_SPEED_QDR ) ? " QDR" : "" ) );
        return supported;
}

References BIT_GET, DBGC, DBGC2, features, IB_LINK_SPEED_DDR, IB_LINK_SPEED_QDR, IB_LINK_SPEED_SDR, port, QIB7322_BOARD_QMH7342, qib7322_readq, QIB_7322_active_feature_mask_offset, QIB_7322_Revision_offset, revision, and supported.

Referenced by qib7322_probe().

qib7322_open()

int qib7322_open ( struct ib_device * ibdev )

static

Initialise Infiniband link.

Parameters

ibdev

Infiniband device

Return values

rc	Return status code

Definition at line 1717 of file qib7322.c.

                                                    {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
        struct QIB_7322_IBCCtrlA_0 ibcctrla;
        unsigned int port = ( ibdev->port - QIB7322_PORT_BASE );
 
        /* Enable link */
        qib7322_readq_port ( qib7322, &ibcctrla,
                             QIB_7322_IBCCtrlA_0_offset, port );
        BIT_SET ( &ibcctrla, IBLinkEn, 1 );
        qib7322_writeq_port ( qib7322, &ibcctrla,
                              QIB_7322_IBCCtrlA_0_offset, port );
 
        return 0;
}

References BIT_SET, ib_get_drvdata(), qib7322::ibdev, ib_device::port, port, QIB7322_PORT_BASE, qib7322_readq_port, qib7322_writeq_port, and QIB_7322_IBCCtrlA_0_offset.

qib7322_close()

void qib7322_close ( struct ib_device * ibdev )

static

Close Infiniband link.

Parameters

ibdev

Infiniband device

Definition at line 1737 of file qib7322.c.

                                                      {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
        struct QIB_7322_IBCCtrlA_0 ibcctrla;
        unsigned int port = ( ibdev->port - QIB7322_PORT_BASE );
 
        /* Disable link */
        qib7322_readq_port ( qib7322, &ibcctrla,
                             QIB_7322_IBCCtrlA_0_offset, port );
        BIT_SET ( &ibcctrla, IBLinkEn, 0 );
        qib7322_writeq_port ( qib7322, &ibcctrla,
                              QIB_7322_IBCCtrlA_0_offset, port );
}

References BIT_SET, ib_get_drvdata(), qib7322::ibdev, ib_device::port, port, QIB7322_PORT_BASE, qib7322_readq_port, qib7322_writeq_port, and QIB_7322_IBCCtrlA_0_offset.

qib7322_mcast_attach()

int qib7322_mcast_attach ( struct ib_device * ibdev, struct ib_queue_pair * qp, union ib_gid * gid )

static

Attach to multicast group.

Parameters

ibdev	Infiniband device
qp	Queue pair
gid	Multicast GID

Return values

rc	Return status code

Definition at line 1765 of file qib7322.c.

                                                      {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
 
        ( void ) qib7322;
        ( void ) qp;
        ( void ) gid;
        return 0;
}

References gid, ib_get_drvdata(), qib7322::ibdev, and qp.

qib7322_mcast_detach()

void qib7322_mcast_detach ( struct ib_device * ibdev, struct ib_queue_pair * qp, union ib_gid * gid )

static

Detach from multicast group.

Parameters

ibdev	Infiniband device
qp	Queue pair
gid	Multicast GID

Definition at line 1783 of file qib7322.c.

                                                       {
        struct qib7322 *qib7322 = ib_get_drvdata ( ibdev );
 
        ( void ) qib7322;
        ( void ) qp;
        ( void ) gid;
 }

References gid, ib_get_drvdata(), qib7322::ibdev, and qp.

qib7322_i2c_read_bit()

int qib7322_i2c_read_bit ( struct bit_basher * basher, unsigned int bit_id )

static

Read QIB7322 I2C line status.

Parameters

basher	Bit-bashing interface
bit_id	Bit number

Return values

zero	Input is a logic 0
non-zero	Input is a logic 1

Definition at line 1833 of file qib7322.c.

                                                        {
        struct qib7322 *qib7322 =
                container_of ( basher, struct qib7322, i2c.basher );
        struct QIB_7322_EXTStatus extstatus;
        unsigned int status;
 
        DBG_DISABLE ( DBGLVL_IO );
 
        qib7322_readq ( qib7322, &extstatus, QIB_7322_EXTStatus_offset );
        status = ( BIT_GET ( &extstatus, GPIOIn ) & qib7322_i2c_bits[bit_id] );
 
        DBG_ENABLE ( DBGLVL_IO );
 
        return status;
}

References i2c_bit_basher::basher, BIT_GET, container_of, DBG_DISABLE, DBG_ENABLE, DBGLVL_IO, qib7322::i2c, qib7322_i2c_bits, qib7322_readq, QIB_7322_EXTStatus_offset, and status.

qib7322_i2c_write_bit()

void qib7322_i2c_write_bit ( struct bit_basher * basher, unsigned int bit_id, unsigned long data )

static

Write QIB7322 I2C line status.

Parameters

basher	Bit-bashing interface
bit_id	Bit number
data	Value to write

Definition at line 1857 of file qib7322.c.

                                                                              {
        struct qib7322 *qib7322 =
                container_of ( basher, struct qib7322, i2c.basher );
        struct QIB_7322_EXTCtrl extctrl;
        struct QIB_7322_GPIO gpioout;
        unsigned int bit = qib7322_i2c_bits[bit_id];
        unsigned int outputs = 0;
        unsigned int output_enables = 0;
 
        DBG_DISABLE ( DBGLVL_IO );
 
        /* Read current GPIO mask and outputs */
        qib7322_readq ( qib7322, &extctrl, QIB_7322_EXTCtrl_offset );
        qib7322_readq ( qib7322, &gpioout, QIB_7322_GPIOOut_offset );
 
        /* Update outputs and output enables.  I2C lines are tied
         * high, so we always set the output to 0 and use the output
         * enable to control the line.
         */
        output_enables = BIT_GET ( &extctrl, GPIOOe );
        output_enables = ( ( output_enables & ~bit ) | ( ~data & bit ) );
        outputs = BIT_GET ( &gpioout, GPIO );
        outputs = ( outputs & ~bit );
        BIT_SET ( &extctrl, GPIOOe, output_enables );
        BIT_SET ( &gpioout, GPIO, outputs );
 
        /* Write the output enable first; that way we avoid logic
         * hazards.
         */
        qib7322_writeq ( qib7322, &extctrl, QIB_7322_EXTCtrl_offset );
        qib7322_writeq ( qib7322, &gpioout, QIB_7322_GPIOOut_offset );
        mb();
 
        DBG_ENABLE ( DBGLVL_IO );
}

References i2c_bit_basher::basher, bit, BIT_GET, BIT_SET, container_of, data, DBG_DISABLE, DBG_ENABLE, DBGLVL_IO, qib7322::i2c, mb(), qib7322_i2c_bits, qib7322_readq, qib7322_writeq, QIB_7322_EXTCtrl_offset, and QIB_7322_GPIOOut_offset.

qib7322_init_i2c()

int qib7322_init_i2c ( struct qib7322 * qib7322 )

static

Initialise QIB7322 I2C subsystem.

Parameters

qib7322

QIB7322 device

Return values

rc	Return status code

Definition at line 1906 of file qib7322.c.

                                                        {
        static int try_eeprom_address[] = { 0x51, 0x50 };
        unsigned int i;
        int rc;
 
        /* Initialise bus */
        if ( ( rc = init_i2c_bit_basher ( &qib7322->i2c,
                                          &qib7322_i2c_basher_ops ) ) != 0 ) {
                DBGC ( qib7322, "QIB7322 %p could not initialise I2C bus: %s\n",
                       qib7322, strerror ( rc ) );
                return rc;
        }
 
        /* Probe for devices */
        for ( i = 0 ; i < ( sizeof ( try_eeprom_address ) /
                            sizeof ( try_eeprom_address[0] ) ) ; i++ ) {
                init_i2c_eeprom ( &qib7322->eeprom, try_eeprom_address[i] );
                if ( ( rc = i2c_check_presence ( &qib7322->i2c.i2c,
                                                 &qib7322->eeprom ) ) == 0 ) {
                        DBGC2 ( qib7322, "QIB7322 %p found EEPROM at %02x\n",
                                qib7322, try_eeprom_address[i] );
                        return 0;
                }
        }
 
        DBGC ( qib7322, "QIB7322 %p could not find EEPROM\n", qib7322 );
        return -ENODEV;
}

References DBGC, DBGC2, qib7322::eeprom, ENODEV, i2c_bit_basher::i2c, qib7322::i2c, i2c_check_presence(), init_i2c_bit_basher(), init_i2c_eeprom(), qib7322_i2c_basher_ops, rc, and strerror().

Referenced by qib7322_probe().

qib7322_read_eeprom()

int qib7322_read_eeprom ( struct qib7322 * qib7322 )

static

Read EEPROM parameters.

Parameters

qib7322

QIB7322 device

Return values

rc	Return status code

Definition at line 1941 of file qib7322.c.

                                                           {
        struct i2c_interface *i2c = &qib7322->i2c.i2c;
        union ib_guid *guid = &qib7322->guid;
        int rc;
 
        /* Read GUID */
        if ( ( rc = i2c->read ( i2c, &qib7322->eeprom,
                                QIB7322_EEPROM_GUID_OFFSET, guid->bytes,
                                sizeof ( *guid ) ) ) != 0 ) {
                DBGC ( qib7322, "QIB7322 %p could not read GUID: %s\n",
                       qib7322, strerror ( rc ) );
                return rc;
        }
        DBGC2 ( qib7322, "QIB7322 %p has GUID " IB_GUID_FMT "\n",
                qib7322, IB_GUID_ARGS ( guid ) );
 
        /* Read serial number (debug only) */
        if ( DBG_LOG ) {
                uint8_t serial[QIB7322_EEPROM_SERIAL_SIZE + 1];
 
                serial[ sizeof ( serial ) - 1 ] = '\0';
                if ( ( rc = i2c->read ( i2c, &qib7322->eeprom,
                                        QIB7322_EEPROM_SERIAL_OFFSET, serial,
                                        ( sizeof ( serial ) - 1 ) ) ) != 0 ) {
                        DBGC ( qib7322, "QIB7322 %p could not read serial: "
                               "%s\n", qib7322, strerror ( rc ) );
                        return rc;
                }
                DBGC2 ( qib7322, "QIB7322 %p has serial number \"%s\"\n",
                        qib7322, serial );
        }
 
        return 0;
}

References DBG_LOG, DBGC, DBGC2, qib7322::eeprom, guid, qib7322::guid, i2c_bit_basher::i2c, qib7322::i2c, IB_GUID_ARGS, IB_GUID_FMT, QIB7322_EEPROM_GUID_OFFSET, QIB7322_EEPROM_SERIAL_OFFSET, QIB7322_EEPROM_SERIAL_SIZE, rc, i2c_interface::read, serial, and strerror().

Referenced by qib7322_probe().

qib7322_ahb_wait()

int qib7322_ahb_wait ( struct qib7322 * qib7322 )

static

Wait for AHB transaction to complete.

Parameters

qib7322

QIB7322 device

Return values

rc	Return status code

Definition at line 1989 of file qib7322.c.

                                                        {
        struct QIB_7322_ahb_transaction_reg transaction;
        unsigned int i;
 
        /* Wait for Ready bit to be asserted */
        for ( i = 0 ; i < QIB7322_AHB_MAX_WAIT_US ; i++ ) {
                qib7322_readq ( qib7322, &transaction,
                                QIB_7322_ahb_transaction_reg_offset );
                if ( BIT_GET ( &transaction, ahb_rdy ) )
                        return 0;
                udelay ( 1 );
        }
 
        DBGC ( qib7322, "QIB7322 %p timed out waiting for AHB transaction\n",
               qib7322 );
        return -ETIMEDOUT;
}

References BIT_GET, DBGC, ETIMEDOUT, QIB7322_AHB_MAX_WAIT_US, qib7322_readq, QIB_7322_ahb_transaction_reg_offset, and udelay().

Referenced by qib7322_ahb_read(), qib7322_ahb_request(), and qib7322_ahb_write().

qib7322_ahb_request()

int qib7322_ahb_request ( struct qib7322 * qib7322, unsigned int location )

static

Request ownership of the AHB.

Parameters

qib7322	QIB7322 device
location	AHB location

Return values

rc	Return status code

Definition at line 2014 of file qib7322.c.

                                                         {
        struct QIB_7322_ahb_access_ctrl access;
        int rc;
 
        /* Request ownership */
        memset ( &access, 0, sizeof ( access ) );
        BIT_FILL_2 ( &access,
                     sw_ahb_sel, 1,
                     sw_sel_ahb_trgt, QIB7322_AHB_LOC_TARGET ( location ) );
        qib7322_writeq ( qib7322, &access, QIB_7322_ahb_access_ctrl_offset );
 
        /* Wait for ownership to be granted */
        if ( ( rc = qib7322_ahb_wait ( qib7322 ) ) != 0 )  {
                DBGC ( qib7322, "QIB7322 %p could not obtain AHB ownership: "
                       "%s\n", qib7322, strerror ( rc ) );
                return rc;
        }
 
        return 0;
}

References BIT_FILL_2, DBGC, memset(), QIB7322_AHB_LOC_TARGET, qib7322_ahb_wait(), qib7322_writeq, QIB_7322_ahb_access_ctrl_offset, rc, and strerror().

Referenced by qib7322_ahb_mod_reg().

qib7322_ahb_release()

void qib7322_ahb_release ( struct qib7322 * qib7322 )

static

Release ownership of the AHB.

Parameters

qib7322

QIB7322 device

Definition at line 2041 of file qib7322.c.

                                                            {
        struct QIB_7322_ahb_access_ctrl access;
 
        memset ( &access, 0, sizeof ( access ) );
        qib7322_writeq ( qib7322, &access, QIB_7322_ahb_access_ctrl_offset );
}

References memset(), qib7322_writeq, and QIB_7322_ahb_access_ctrl_offset.

Referenced by qib7322_ahb_mod_reg().

qib7322_ahb_read()

int qib7322_ahb_read ( struct qib7322 * qib7322, unsigned int location, uint32_t * data )

static

Read data via AHB.

Parameters

qib7322	QIB7322 device
location	AHB location
data	Data to read

Return values

rc	Return status code

You must have already acquired ownership of the AHB.

Definition at line 2058 of file qib7322.c.

                                               {
        struct QIB_7322_ahb_transaction_reg xact;
        int rc;
 
        /* Avoid returning uninitialised data on error */
        *data = 0;
 
        /* Initiate transaction */
        memset ( &xact, 0, sizeof ( xact ) );
        BIT_FILL_2 ( &xact,
                     ahb_address, QIB7322_AHB_LOC_ADDRESS ( location ),
                     write_not_read, 0 );
        qib7322_writeq ( qib7322, &xact, QIB_7322_ahb_transaction_reg_offset );
 
        /* Wait for transaction to complete */
        if ( ( rc = qib7322_ahb_wait ( qib7322 ) ) != 0 )
                return rc;
 
        /* Read transaction data */
        qib7322_readq ( qib7322, &xact, QIB_7322_ahb_transaction_reg_offset );
        *data = BIT_GET ( &xact, ahb_data );
        return 0;
}

References BIT_FILL_2, BIT_GET, data, memset(), QIB7322_AHB_LOC_ADDRESS, qib7322_ahb_wait(), qib7322_readq, qib7322_writeq, QIB_7322_ahb_transaction_reg_offset, rc, and xact.

Referenced by qib7322_ahb_mod_reg().

qib7322_ahb_write()

int qib7322_ahb_write ( struct qib7322 * qib7322, unsigned int location, uint32_t data )

static

Write data via AHB.

Parameters

qib7322	QIB7322 device
location	AHB location
data	Data to write

Return values

rc	Return status code

You must have already acquired ownership of the AHB.

Definition at line 2093 of file qib7322.c.

                                               {
        struct QIB_7322_ahb_transaction_reg xact;
        int rc;
 
        /* Initiate transaction */
        memset ( &xact, 0, sizeof ( xact ) );
        BIT_FILL_3 ( &xact,
                     ahb_address, QIB7322_AHB_LOC_ADDRESS ( location ),
                     write_not_read, 1,
                     ahb_data, data );
        qib7322_writeq ( qib7322, &xact, QIB_7322_ahb_transaction_reg_offset );
 
        /* Wait for transaction to complete */
        if ( ( rc = qib7322_ahb_wait ( qib7322 ) ) != 0 )
                return rc;
 
        return 0;
}

References BIT_FILL_3, data, memset(), QIB7322_AHB_LOC_ADDRESS, qib7322_ahb_wait(), qib7322_writeq, QIB_7322_ahb_transaction_reg_offset, rc, and xact.

Referenced by qib7322_ahb_mod_reg().

qib7322_ahb_mod_reg()

int qib7322_ahb_mod_reg ( struct qib7322 * qib7322, unsigned int location, uint32_t value, uint32_t mask )

static

Read/modify/write AHB register.

Parameters

qib7322	QIB7322 device
location	AHB location
value	Value to set
mask	Mask to apply to old value

Return values

rc	Return status code

Definition at line 2122 of file qib7322.c.

                                                                 {
        uint32_t old_value;
        uint32_t new_value;
        int rc;
 
        DBG_DISABLE ( DBGLVL_IO );
 
        /* Sanity check */
        assert ( ( value & mask ) == value );
 
        /* Acquire bus ownership */
        if ( ( rc = qib7322_ahb_request ( qib7322, location ) ) != 0 )
                goto out;
 
        /* Read existing value */
        if ( ( rc = qib7322_ahb_read ( qib7322, location, &old_value ) ) != 0 )
                goto out_release;
 
        /* Update value */
        new_value = ( ( old_value & ~mask ) | value );
        DBGCP ( qib7322, "QIB7322 %p AHB %x %#08x => %#08x\n",
                qib7322, location, old_value, new_value );
        if ( ( rc = qib7322_ahb_write ( qib7322, location, new_value ) ) != 0 )
                goto out_release;
 
 out_release:
        /* Release bus */
        qib7322_ahb_release ( qib7322 );
 out:
        DBG_ENABLE ( DBGLVL_IO );
        return rc;
}

References assert, DBG_DISABLE, DBG_ENABLE, DBGCP, DBGLVL_IO, out, qib7322_ahb_read(), qib7322_ahb_release(), qib7322_ahb_request(), qib7322_ahb_write(), rc, and value.

Referenced by qib7322_ahb_mod_reg_all().

qib7322_ahb_mod_reg_all()

int qib7322_ahb_mod_reg_all ( struct qib7322 * qib7322, unsigned int reg, uint32_t value, uint32_t mask )

static

Read/modify/write AHB register across all ports and channels.

Parameters

qib7322	QIB7322 device
reg	AHB register
value	Value to set
mask	Mask to apply to old value

Return values

rc	Return status code

Definition at line 2165 of file qib7322.c.

                                                                     {
        unsigned int port;
        unsigned int channel;
        unsigned int location;
        int rc;
 
        for ( port = 0 ; port < QIB7322_MAX_PORTS ; port++ ) {
                for ( channel = 0 ; channel < QIB7322_MAX_WIDTH ; channel++ ) {
                        location = QIB7322_AHB_LOCATION ( port, channel, reg );
                        if ( ( rc = qib7322_ahb_mod_reg ( qib7322, location,
                                                          value, mask ) ) != 0 )
                                return rc;
                }
        }
        return 0;
}

References channel, port, QIB7322_AHB_LOCATION, qib7322_ahb_mod_reg(), QIB7322_MAX_PORTS, QIB7322_MAX_WIDTH, rc, reg, and value.

Referenced by qib7322_init_ib_serdes().

qib7322_init_ib_serdes()

int qib7322_init_ib_serdes ( struct qib7322 * qib7322 )

static

Initialise the IB SerDes.

Parameters

qib7322

QIB7322 device

Return values

rc	Return status code

Definition at line 2196 of file qib7322.c.

                                                              {
        struct QIB_7322_IBCCtrlA_0 ibcctrla;
        struct QIB_7322_IBCCtrlB_0 ibcctrlb;
        struct QIB_7322_IBPCSConfig_0 ibpcsconfig;
 
        /* Configure sensible defaults for IBC */
        memset ( &ibcctrla, 0, sizeof ( ibcctrla ) );
        BIT_FILL_5 ( &ibcctrla, /* Tuning values taken from Linux driver */
                     FlowCtrlPeriod, 0x03,
                     FlowCtrlWaterMark, 0x05,
                     MaxPktLen, ( ( QIB7322_RECV_HEADER_SIZE +
                                    QIB7322_RECV_PAYLOAD_SIZE +
                                    4 /* ICRC */ ) >> 2 ),
                     PhyerrThreshold, 0xf,
                     OverrunThreshold, 0xf );
        qib7322_writeq ( qib7322, &ibcctrla, QIB_7322_IBCCtrlA_0_offset );
        qib7322_writeq ( qib7322, &ibcctrla, QIB_7322_IBCCtrlA_1_offset );
 
        /* Force SDR only to avoid needing all the DDR tuning,
         * Mellanox compatibility hacks etc.  SDR is plenty for
         * boot-time operation.
         */
        qib7322_readq ( qib7322, &ibcctrlb, QIB_7322_IBCCtrlB_0_offset );
        BIT_SET ( &ibcctrlb, IB_ENHANCED_MODE, 0 );
        BIT_SET ( &ibcctrlb, SD_SPEED_SDR, 1 );
        BIT_SET ( &ibcctrlb, SD_SPEED_DDR, 0 );
        BIT_SET ( &ibcctrlb, SD_SPEED_QDR, 0 );
        BIT_SET ( &ibcctrlb, IB_NUM_CHANNELS, 1 ); /* 4X only */
        BIT_SET ( &ibcctrlb, IB_LANE_REV_SUPPORTED, 0 );
        BIT_SET ( &ibcctrlb, HRTBT_ENB, 0 );
        BIT_SET ( &ibcctrlb, HRTBT_AUTO, 0 );
        qib7322_writeq ( qib7322, &ibcctrlb, QIB_7322_IBCCtrlB_0_offset );
        qib7322_writeq ( qib7322, &ibcctrlb, QIB_7322_IBCCtrlB_1_offset );
 
        /* Tune SerDes */
        qib7322_ahb_mod_reg_all ( qib7322, 2, 0, 0x00000e00UL );
 
        /* Bring XGXS out of reset */
        memset ( &ibpcsconfig, 0, sizeof ( ibpcsconfig ) );
        qib7322_writeq ( qib7322, &ibpcsconfig, QIB_7322_IBPCSConfig_0_offset );
        qib7322_writeq ( qib7322, &ibpcsconfig, QIB_7322_IBPCSConfig_1_offset );
 
        return 0;
}

References BIT_FILL_5, BIT_SET, memset(), qib7322_ahb_mod_reg_all(), qib7322_readq, QIB7322_RECV_HEADER_SIZE, QIB7322_RECV_PAYLOAD_SIZE, qib7322_writeq, QIB_7322_IBCCtrlA_0_offset, QIB_7322_IBCCtrlA_1_offset, QIB_7322_IBCCtrlB_0_offset, QIB_7322_IBCCtrlB_1_offset, QIB_7322_IBPCSConfig_0_offset, and QIB_7322_IBPCSConfig_1_offset.

Referenced by qib7322_probe().

qib7322_reset()

void qib7322_reset ( struct qib7322 * qib7322, struct pci_device * pci )

static

Reset QIB7322.

Parameters

qib7322	QIB7322 device
pci	PCI device

Return values

rc	Return status code

Definition at line 2255 of file qib7322.c.

                                                                              {
        struct QIB_7322_Control control;
        struct pci_config_backup backup;
 
        /* Back up PCI configuration space */
        pci_backup ( pci, &backup, PCI_CONFIG_BACKUP_ALL, NULL );
 
        /* Assert reset */
        memset ( &control, 0, sizeof ( control ) );
        BIT_FILL_1 ( &control, SyncReset, 1 );
        qib7322_writeq ( qib7322, &control, QIB_7322_Control_offset );
 
        /* Wait for reset to complete */
        mdelay ( 1000 );
 
        /* Restore PCI configuration space */
        pci_restore ( pci, &backup, PCI_CONFIG_BACKUP_ALL, NULL );
}

References BIT_FILL_1, control, mdelay(), memset(), NULL, pci_backup(), PCI_CONFIG_BACKUP_ALL, pci_restore(), qib7322_writeq, and QIB_7322_Control_offset.

Referenced by qib7322_probe().

qib7322_probe()

int qib7322_probe ( struct pci_device * pci )

static

Probe PCI device.

Parameters

pci	PCI device
id	PCI ID

Return values

rc	Return status code

Definition at line 2281 of file qib7322.c.

                                                    {
        struct qib7322 *qib7322;
        struct QIB_7322_Revision revision;
        struct ib_device *ibdev;
        unsigned int link_speed_supported;
        int i;
        int rc;
 
        /* Allocate QIB7322 device */
        qib7322 = zalloc ( sizeof ( *qib7322 ) );
        if ( ! qib7322 ) {
                rc = -ENOMEM;
                goto err_alloc_qib7322;
        }
        pci_set_drvdata ( pci, qib7322 );
 
        /* Fix up PCI device */
        adjust_pci_device ( pci );
 
        /* Map PCI BARs */
        qib7322->regs = pci_ioremap ( pci, pci->membase, QIB7322_BAR0_SIZE );
        DBGC2 ( qib7322, "QIB7322 %p has BAR at %08lx\n",
                qib7322, pci->membase );
 
        /* Reset device */
        qib7322_reset ( qib7322, pci );
 
        /* Print some general data */
        qib7322_readq ( qib7322, &revision, QIB_7322_Revision_offset );
        DBGC2 ( qib7322, "QIB7322 %p board %02lx v%ld.%ld.%ld.%ld\n", qib7322,
                BIT_GET ( &revision, BoardID ),
                BIT_GET ( &revision, R_SW ),
                BIT_GET ( &revision, R_Arch ),
                BIT_GET ( &revision, R_ChipRevMajor ),
                BIT_GET ( &revision, R_ChipRevMinor ) );
 
        /* Initialise I2C subsystem */
        if ( ( rc = qib7322_init_i2c ( qib7322 ) ) != 0 )
                goto err_init_i2c;
 
        /* Read EEPROM parameters */
        if ( ( rc = qib7322_read_eeprom ( qib7322 ) ) != 0 )
                goto err_read_eeprom;
 
        /* Initialise send datapath */
        if ( ( rc = qib7322_init_send ( qib7322 ) ) != 0 )
                goto err_init_send;
 
        /* Initialise receive datapath */
        if ( ( rc = qib7322_init_recv ( qib7322 ) ) != 0 )
                goto err_init_recv;
 
        /* Initialise the IB SerDes */
        if ( ( rc = qib7322_init_ib_serdes ( qib7322 ) ) != 0 )
                goto err_init_ib_serdes;
 
        /* Allocate Infiniband devices */
        for ( i = 0 ; i < QIB7322_MAX_PORTS ; i++ ) {
                link_speed_supported =
                        qib7322_link_speed_supported ( qib7322, i );
                if ( ! link_speed_supported )
                        continue;
                ibdev = alloc_ibdev ( 0 );
                if ( ! ibdev ) {
                        rc = -ENOMEM;
                        goto err_alloc_ibdev;
                }
                qib7322->ibdev[i] = ibdev;
                ibdev->dev = &pci->dev;
                ibdev->op = &qib7322_ib_operations;
                ibdev->port = ( QIB7322_PORT_BASE + i );
                ibdev->ports = QIB7322_MAX_PORTS;
                ibdev->link_width_enabled = ibdev->link_width_supported =
                        IB_LINK_WIDTH_4X; /* 1x does not work */
                ibdev->link_speed_enabled = ibdev->link_speed_supported =
                        IB_LINK_SPEED_SDR; /* to avoid need for link tuning */
                memcpy ( &ibdev->node_guid, &qib7322->guid,
                         sizeof ( ibdev->node_guid ) );
                memcpy ( &ibdev->gid.s.guid, &qib7322->guid,
                         sizeof ( ibdev->gid.s.guid ) );
                assert ( ( ibdev->gid.s.guid.bytes[7] & i ) == 0 );
                ibdev->gid.s.guid.bytes[7] |= i;
                ib_set_drvdata ( ibdev, qib7322 );
        }
 
        /* Register Infiniband devices */
        for ( i = 0 ; i < QIB7322_MAX_PORTS ; i++ ) {
                if ( ! qib7322->ibdev[i] )
                        continue;
                if ( ( rc = register_ibdev ( qib7322->ibdev[i] ) ) != 0 ) {
                        DBGC ( qib7322, "QIB7322 %p port %d could not register "
                               "IB device: %s\n", qib7322, i, strerror ( rc ) );
                        goto err_register_ibdev;
                }
        }
 
        return 0;
 
        i = QIB7322_MAX_PORTS;
 err_register_ibdev:
        for ( i-- ; i >= 0 ; i-- ) {
                if ( qib7322->ibdev[i] )
                        unregister_ibdev ( qib7322->ibdev[i] );
        }
        i = QIB7322_MAX_PORTS;
 err_alloc_ibdev:
        for ( i-- ; i >= 0 ; i-- )
                ibdev_put ( qib7322->ibdev[i] );
 err_init_ib_serdes:
        qib7322_fini_send ( qib7322 );
 err_init_send:
        qib7322_fini_recv ( qib7322 );
 err_init_recv:
 err_read_eeprom:
 err_init_i2c:
        iounmap ( qib7322->regs );
        free ( qib7322 );
 err_alloc_qib7322:
        return rc;
}

References adjust_pci_device(), alloc_ibdev(), assert, BIT_GET, ib_guid::bytes, DBGC, DBGC2, ib_device::dev, pci_device::dev, ENOMEM, free, ib_device::gid, ib_gid::guid, qib7322::guid, IB_LINK_SPEED_SDR, IB_LINK_WIDTH_4X, ib_set_drvdata(), qib7322::ibdev, ibdev_put(), iounmap(), ib_device::link_speed_enabled, ib_device::link_speed_supported, ib_device::link_width_enabled, ib_device::link_width_supported, pci_device::membase, memcpy(), ib_device::node_guid, ib_device::op, pci_ioremap(), pci_set_drvdata(), ib_device::port, ib_device::ports, QIB7322_BAR0_SIZE, qib7322_fini_recv(), qib7322_fini_send(), qib7322_ib_operations, qib7322_init_i2c(), qib7322_init_ib_serdes(), qib7322_init_recv(), qib7322_init_send(), qib7322_link_speed_supported(), QIB7322_MAX_PORTS, QIB7322_PORT_BASE, qib7322_read_eeprom(), qib7322_readq, qib7322_reset(), QIB_7322_Revision_offset, rc, register_ibdev(), qib7322::regs, revision, ib_gid::s, strerror(), unregister_ibdev(), and zalloc().

qib7322_remove()

void qib7322_remove ( struct pci_device * pci )

static

Remove PCI device.

Parameters

pci	PCI device

Definition at line 2407 of file qib7322.c.

                                                      {
        struct qib7322 *qib7322 = pci_get_drvdata ( pci );
        int i;
 
        for ( i = ( QIB7322_MAX_PORTS - 1 ) ; i >= 0 ; i-- ) {
                if ( qib7322->ibdev[i] )
                        unregister_ibdev ( qib7322->ibdev[i] );
        }
        for ( i = ( QIB7322_MAX_PORTS - 1 ) ; i >= 0 ; i-- )
                ibdev_put ( qib7322->ibdev[i] );
        qib7322_fini_send ( qib7322 );
        qib7322_fini_recv ( qib7322 );
        iounmap ( qib7322->regs );
        free ( qib7322 );
}

References free, qib7322::ibdev, ibdev_put(), iounmap(), pci_get_drvdata(), qib7322_fini_recv(), qib7322_fini_send(), QIB7322_MAX_PORTS, qib7322::regs, and unregister_ibdev().

Variable Documentation

qib7322_ib_operations

struct ib_device_operations qib7322_ib_operations

static

Initial value:

= {
        .create_cq      = qib7322_create_cq,
        .destroy_cq     = qib7322_destroy_cq,
        .create_qp      = qib7322_create_qp,
        .modify_qp      = qib7322_modify_qp,
        .destroy_qp     = qib7322_destroy_qp,
        .post_send      = qib7322_post_send,
        .post_recv      = qib7322_post_recv,
        .poll_cq        = qib7322_poll_cq,
        .poll_eq        = qib7322_poll_eq,
        .open           = qib7322_open,
        .close          = qib7322_close,
        .mcast_attach   = qib7322_mcast_attach,
        .mcast_detach   = qib7322_mcast_detach,
        .set_port_info  = qib7322_set_port_info,
        .set_pkey_table = qib7322_set_pkey_table,
}

QIB7322 Infiniband operations.

Definition at line 1794 of file qib7322.c.

                                                           {
        .create_cq      = qib7322_create_cq,
        .destroy_cq     = qib7322_destroy_cq,
        .create_qp      = qib7322_create_qp,
        .modify_qp      = qib7322_modify_qp,
        .destroy_qp     = qib7322_destroy_qp,
        .post_send      = qib7322_post_send,
        .post_recv      = qib7322_post_recv,
        .poll_cq        = qib7322_poll_cq,
        .poll_eq        = qib7322_poll_eq,
        .open           = qib7322_open,
        .close          = qib7322_close,
        .mcast_attach   = qib7322_mcast_attach,
        .mcast_detach   = qib7322_mcast_detach,
        .set_port_info  = qib7322_set_port_info,
        .set_pkey_table = qib7322_set_pkey_table,
};

Referenced by qib7322_probe().

qib7322_i2c_bits

unsigned int qib7322_i2c_bits[]

static

Initial value:

= {
        [I2C_BIT_SCL] = ( 1 << QIB7322_GPIO_SCL ),
        [I2C_BIT_SDA] = ( 1 << QIB7322_GPIO_SDA ),
}

QIB7322 I2C bit to GPIO mappings.

Definition at line 1820 of file qib7322.c.

                                         {
        [I2C_BIT_SCL] = ( 1 << QIB7322_GPIO_SCL ),
        [I2C_BIT_SDA] = ( 1 << QIB7322_GPIO_SDA ),
};

Referenced by qib7322_i2c_read_bit(), and qib7322_i2c_write_bit().

qib7322_i2c_basher_ops

struct bit_basher_operations qib7322_i2c_basher_ops

static

Initial value:

= {
        .read   = qib7322_i2c_read_bit,
        .write  = qib7322_i2c_write_bit,
}

QIB7322 I2C bit-bashing interface operations.

Definition at line 1895 of file qib7322.c.

                                                             {
        .read   = qib7322_i2c_read_bit,
        .write  = qib7322_i2c_write_bit,
};

Referenced by qib7322_init_i2c().

qib7322_nics

struct pci_device_id qib7322_nics[]

static

Initial value:

= {
        PCI_ROM ( 0x1077, 0x7322, "iba7322", "IBA7322 QDR InfiniBand HCA", 0 ),
}

Definition at line 2423 of file qib7322.c.

                                             {
        PCI_ROM ( 0x1077, 0x7322, "iba7322", "IBA7322 QDR InfiniBand HCA", 0 ),
};

__pci_driver

struct pci_driver qib7322_driver __pci_driver

Initial value:

= {
        .ids = qib7322_nics,
        .id_count = ( sizeof ( qib7322_nics ) / sizeof ( qib7322_nics[0] ) ),
        .probe = qib7322_probe,
        .remove = qib7322_remove,
}

Definition at line 2427 of file qib7322.c.

                                                {
        .ids = qib7322_nics,
        .id_count = ( sizeof ( qib7322_nics ) / sizeof ( qib7322_nics[0] ) ),
        .probe = qib7322_probe,
        .remove = qib7322_remove,
};