1 files changed, 111 insertions, 0 deletions
diff --git a/arch/mips/netlogic/xlp/nlm_hal.c b/arch/mips/netlogic/xlp/nlm_hal.c
new file mode 100644
index 0000000..9428e71
--- /dev/null
+++ b/arch/mips/netlogic/xlp/nlm_hal.c
@@ -0,0 +1,111 @@
+/*
+ * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
+ * reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the NetLogic
+ * license below:
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``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 NETLOGIC 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 <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/delay.h>
+
+#include <asm/mipsregs.h>
+#include <asm/time.h>
+
+#include <asm/netlogic/haldefs.h>
+#include <asm/netlogic/xlp-hal/iomap.h>
+#include <asm/netlogic/xlp-hal/xlp.h>
+#include <asm/netlogic/xlp-hal/pic.h>
+#include <asm/netlogic/xlp-hal/sys.h>
+
+/* These addresses are computed by the nlm_hal_init() */
+uint64_t nlm_io_base;
+uint64_t nlm_sys_base;
+uint64_t nlm_pic_base;
+
+/* Main initialization */
+void nlm_hal_init(void)
+{
+	nlm_io_base = CKSEG1ADDR(XLP_DEFAULT_IO_BASE);
+	nlm_sys_base = nlm_get_sys_regbase(0);	/* node 0 */
+	nlm_pic_base = nlm_get_pic_regbase(0);	/* node 0 */
+}
+
+int nlm_irq_to_irt(int irq)
+{
+	if (!PIC_IRQ_IS_IRT(irq))
+		return -1;
+
+	switch (irq) {
+	case PIC_UART_0_IRQ:
+		return PIC_IRT_UART_0_INDEX;
+	case PIC_UART_1_IRQ:
+		return PIC_IRT_UART_1_INDEX;
+	default:
+		return -1;
+	}
+}
+
+int nlm_irt_to_irq(int irt)
+{
+	switch (irt) {
+	case PIC_IRT_UART_0_INDEX:
+		return PIC_UART_0_IRQ;
+	case PIC_IRT_UART_1_INDEX:
+		return PIC_UART_1_IRQ;
+	default:
+		return -1;
+	}
+}
+
+unsigned int nlm_get_core_frequency(int core)
+{
+	unsigned int pll_divf, pll_divr, dfs_div, ext_div;
+	unsigned int rstval, dfsval, denom;
+	uint64_t num;
+
+	rstval = nlm_read_sys_reg(nlm_sys_base, SYS_POWER_ON_RESET_CFG);
+	dfsval = nlm_read_sys_reg(nlm_sys_base, SYS_CORE_DFS_DIV_VALUE);
+	pll_divf = ((rstval >> 10) & 0x7f) + 1;
+	pll_divr = ((rstval >> 8)  & 0x3) + 1;
+	ext_div  = ((rstval >> 30) & 0x3) + 1;
+	dfs_div  = ((dfsval >> (core * 4)) & 0xf) + 1;
+
+	num = 800000000ULL * pll_divf;
+	denom = 3 * pll_divr * ext_div * dfs_div;
+	do_div(num, denom);
+	return (unsigned int)num;
+}
+
+unsigned int nlm_get_cpu_frequency(void)
+{
+	return nlm_get_core_frequency(0);
+}