bnx2x: driver support routines

More code for the Broadcom/Qlogic NetExtreme II poll mode driver.
Split into pieces for review and not to overwhelm mailers.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Harish Patil <harish.patil@qlogic.com>

drivers/net/bnx2x/debug.c

@@ -0,0 +1,113 @@
+/*-
+ * Copyright (c) 2007-2013 QLogic Corporation. All rights reserved.
+ *
+ * Eric Davis        <edavis@broadcom.com>
+ * David Christensen <davidch@broadcom.com>
+ * Gary Zambrano     <zambrano@broadcom.com>
+ *
+ * Copyright (c) 2013-2015 Brocade Communications Systems, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that 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 Broadcom Corporation nor the name of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written consent.
+ *
+ * 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.
+ */
+
+#include "bnx2x.h"
+
+
+/*
+ * Debug versions of the 8/16/32 bit OS register read/write functions to
+ * capture/display values read/written from/to the controller.
+ */
+void
+bnx2x_reg_write8(struct bnx2x_softc *sc, size_t offset, uint8_t val)
+{
+	PMD_DRV_LOG(DEBUG, "offset=0x%08lx val=0x%02x", offset, val);
+	*((volatile uint8_t*)((uint64_t)sc->bar[BAR0].base_addr + offset)) = val;
+}
+
+void
+bnx2x_reg_write16(struct bnx2x_softc *sc, size_t offset, uint16_t val)
+{
+	if ((offset % 2) != 0) {
+		PMD_DRV_LOG(DEBUG, "Unaligned 16-bit write to 0x%08lx", offset);
+	}
+
+	PMD_DRV_LOG(DEBUG, "offset=0x%08lx val=0x%04x", offset, val);
+	*((volatile uint16_t*)((uint64_t)sc->bar[BAR0].base_addr + offset)) = val;
+}
+
+void
+bnx2x_reg_write32(struct bnx2x_softc *sc, size_t offset, uint32_t val)
+{
+	if ((offset % 4) != 0) {
+		PMD_DRV_LOG(DEBUG, "Unaligned 32-bit write to 0x%08lx", offset);
+	}
+
+	PMD_DRV_LOG(DEBUG, "offset=0x%08lx val=0x%08x", offset, val);
+	*((volatile uint32_t*)((uint64_t)sc->bar[BAR0].base_addr + offset)) = val;
+}
+
+uint8_t
+bnx2x_reg_read8(struct bnx2x_softc *sc, size_t offset)
+{
+	uint8_t val;
+
+	val = (uint8_t)(*((volatile uint8_t*)((uint64_t)sc->bar[BAR0].base_addr + offset)));
+	PMD_DRV_LOG(DEBUG, "offset=0x%08lx val=0x%02x", offset, val);
+
+	return (val);
+}
+
+uint16_t
+bnx2x_reg_read16(struct bnx2x_softc *sc, size_t offset)
+{
+	uint16_t val;
+
+	if ((offset % 2) != 0) {
+		PMD_DRV_LOG(DEBUG, "Unaligned 16-bit read from 0x%08lx", offset);
+	}
+
+	val = (uint16_t)(*((volatile uint16_t*)((uint64_t)sc->bar[BAR0].base_addr + offset)));
+	PMD_DRV_LOG(DEBUG, "offset=0x%08lx val=0x%08x", offset, val);
+
+	return (val);
+}
+
+uint32_t
+bnx2x_reg_read32(struct bnx2x_softc *sc, size_t offset)
+{
+	uint32_t val;
+
+	if ((offset % 4) != 0) {
+		PMD_DRV_LOG(DEBUG, "Unaligned 32-bit read from 0x%08lx", offset);
+		return 0;
+	}
+
+	val = (uint32_t)(*((volatile uint32_t*)((uint64_t)sc->bar[BAR0].base_addr + offset)));
+	PMD_DRV_LOG(DEBUG, "offset=0x%08lx val=0x%08x", offset, val);
+
+	return (val);
+}