freebsd-skq/sys/dev/vxge/vxgehal/vxgehal-driver.c

/*-
 * Copyright(c) 2002-2011 Exar Corp.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification are permitted provided the following conditions are met:
 *
 *    1. Redistributions of source code must retain the above copyright notice,
 *       this list of conditions and the following disclaimer.
 *
 *    2. Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *
 *    3. Neither the name of the Exar Corporation nor the names of its
 *       contributors may be used to endorse or promote products derived from
 *       this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
/*$FreeBSD$*/

#include <dev/vxge/vxgehal/vxgehal.h>

static __hal_driver_t g_driver;
__hal_driver_t *g_vxge_hal_driver;

#if defined(VXGE_OS_MEMORY_CHECK)
vxge_os_malloc_t g_malloc_arr[VXGE_OS_MALLOC_CNT_MAX];
u32 g_malloc_cnt;

#endif

/*
 * Runtime tracing support
 */
u32 g_debug_level;

/*
 * vxge_hal_driver_initialize - Initialize HAL.
 * @config: HAL configuration, see vxge_hal_driver_config_t {}.
 * @uld_callbacks: Upper-layer driver callbacks, e.g. link-up.
 *
 * HAL initialization entry point. Not to confuse with device initialization
 * (note that HAL "contains" zero or more X3100 devices).
 *
 * Returns: VXGE_HAL_OK - success;
 * VXGE_HAL_ERR_BAD_DRIVER_CONFIG - Driver configuration params invalid.
 *
 * See also: vxge_hal_device_initialize(), vxge_hal_status_e {},
 * vxge_hal_uld_cbs_t {}.
 */
vxge_hal_status_e
vxge_hal_driver_initialize(
    vxge_hal_driver_config_t *config,
    vxge_hal_uld_cbs_t *uld_callbacks)
{
	vxge_hal_status_e status;
	g_vxge_hal_driver = &g_driver;

	if ((status = vxge_hal_driver_config_check(config)) != VXGE_HAL_OK)
		return (status);

	vxge_os_memzero(g_vxge_hal_driver, sizeof(__hal_driver_t));

	/* apply config */
	vxge_os_memcpy(&g_vxge_hal_driver->config, config,
	    sizeof(vxge_hal_driver_config_t));

	/* apply ULD callbacks */
	vxge_os_memcpy(&g_vxge_hal_driver->uld_callbacks, uld_callbacks,
	    sizeof(vxge_hal_uld_cbs_t));

	vxge_hal_driver_debug_set(config->level);

	g_vxge_hal_driver->is_initialized = 1;

	return (VXGE_HAL_OK);
}

/*
 * vxge_hal_driver_terminate - Terminate HAL.
 *
 * HAL termination entry point.
 *
 * See also: vxge_hal_device_terminate().
 */
void
vxge_hal_driver_terminate(void)
{
	g_vxge_hal_driver->is_initialized = 0;

	g_vxge_hal_driver = NULL;

#if defined(VXGE_OS_MEMORY_CHECK)
	if (TRUE) {
		u32 i, leaks = 0;

		vxge_os_printf("OSPAL: max g_malloc_cnt %d\n", g_malloc_cnt);
		for (i = 0; i < g_malloc_cnt; i++) {
			if (g_malloc_arr[i].ptr != NULL) {
				vxge_os_printf("OSPAL: memory leak detected at "
				    "%s:%lu:"VXGE_OS_LLXFMT":%lu\n",
				    g_malloc_arr[i].file,
				    g_malloc_arr[i].line,
				    (u64) (ptr_t) g_malloc_arr[i].ptr,
				    g_malloc_arr[i].size);
				leaks++;
			}
		}
		if (leaks) {
			vxge_os_printf("OSPAL: %d memory leaks detected\n",
			    leaks);
		} else {
			vxge_os_println("OSPAL: no memory leaks detected\n");
		}
	}
#endif
}

/*
 * vxge_hal_driver_debug_set - Set the debug module, level and timestamp
 * @level: Debug level as defined in enum vxge_debug_level_e
 *
 * This routine is used to dynamically change the debug output
 */
void
vxge_hal_driver_debug_set(
    vxge_debug_level_e level)
{
	g_vxge_hal_driver->debug_level = level;
	g_debug_level = 0;

	switch (level) {
		/* FALLTHRU */

	case VXGE_TRACE:
		g_debug_level |= VXGE_TRACE;
		/* FALLTHRU */

	case VXGE_INFO:
		g_debug_level |= VXGE_INFO;
		/* FALLTHRU */

	case VXGE_ERR:
		g_debug_level |= VXGE_ERR;
		/* FALLTHRU */

	default:
		break;
	}
}

/*
 * vxge_hal_driver_debug_get - Get the debug level
 *
 * This routine returns the current debug level set
 */
u32
vxge_hal_driver_debug_get(void)
{
	return (g_vxge_hal_driver->debug_level);
}