Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

Pull MIPS updates from Ralf Baechle:

 o Add basic support for the Mediatek/Ralink Wireless SoC family.

 o The Qualcomm Atheros platform is extended by support for the new
   QCA955X SoC series as well as a bunch of patches that get the code
   ready for OF support.

 o Lantiq and BCM47XX platform have a few improvements and bug fixes.

 o MIPS has sent a few patches that get the kernel ready for the
   upcoming microMIPS support.

 o The rest of the series is made up of small bug fixes and cleanups
   that relate to various parts of the MIPS code.  The biggy in there is
   a whitespace cleanup.  After I was sent another set of whitespace
   cleanup patches I decided it was the time to clean the whitespace
   "issues" for once and and that touches many files below arch/mips/.

Fix up silly conflicts, mostly due to whitespace cleanups.

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (105 commits)
  MIPS: Quit exporting kernel internel break codes to uapi/asm/break.h
  MIPS: remove broken conditional inside vpe loader code
  MIPS: SMTC: fix implicit declaration of set_vi_handler
  MIPS: early_printk: drop __init annotations
  MIPS: Probe for and report hardware virtualization support.
  MIPS: ath79: add support for the Qualcomm Atheros AP136-010 board
  MIPS: ath79: add USB controller registration code for the QCA955X SoCs
  MIPS: ath79: add PCI controller registration code for the QCA955X SoCs
  MIPS: ath79: add WMAC registration code for the QCA955X SoCs
  MIPS: ath79: register UART for the QCA955X SoCs
  MIPS: ath79: add QCA955X specific glue to ath79_device_reset_{set, clear}
  MIPS: ath79: add GPIO setup code for the QCA955X SoCs
  MIPS: ath79: add IRQ handling code for the QCA955X SoCs
  MIPS: ath79: add clock setup code for the QCA955X SoCs
  MIPS: ath79: add SoC detection code for the QCA955X SoCs
  MIPS: ath79: add early printk support for the QCA955X SoCs
  MIPS: ath79: fix WMAC IRQ resource assignment
  mips: reserve elfcorehdr
  mips: Make sure kernel memory is in iomem
  MIPS: ath79: use dynamically allocated USB platform devices
  ...

25 files changed, 436 insertions, 220 deletions

diff --git a/arch/mips/cavium-octeon/Kconfig b/arch/mips/cavium-octeon/Kconfig
index 2f4f6d5e05b..75a6df7fd26 100644
--- a/arch/mips/cavium-octeon/Kconfig
+++ b/arch/mips/cavium-octeon/Kconfig
@@ -94,4 +94,13 @@ config SWIOTLB
 	select NEED_SG_DMA_LENGTH
 
 
+config OCTEON_ILM
+	tristate "Module to measure interrupt latency using Octeon CIU Timer"
+	help
+	  This driver is a module to measure interrupt latency using the
+	  the CIU Timers on Octeon.
+
+	  To compile this driver as a module, choose M here.  The module
+	  will be called octeon-ilm
+
 endif # CPU_CAVIUM_OCTEON
diff --git a/arch/mips/cavium-octeon/Makefile b/arch/mips/cavium-octeon/Makefile
index 6e927cf20df..3595affb977 100644
--- a/arch/mips/cavium-octeon/Makefile
+++ b/arch/mips/cavium-octeon/Makefile
@@ -17,7 +17,8 @@ obj-y += dma-octeon.o flash_setup.o
 obj-y += octeon-memcpy.o
 obj-y += executive/
 
-obj-$(CONFIG_SMP)                     += smp.o
+obj-$(CONFIG_SMP)		      += smp.o
+obj-$(CONFIG_OCTEON_ILM)	      += oct_ilm.o
 
 DTS_FILES = octeon_3xxx.dts octeon_68xx.dts
 DTB_FILES = $(patsubst %.dts, %.dtb, $(DTS_FILES))
diff --git a/arch/mips/cavium-octeon/executive/cvmx-bootmem.c b/arch/mips/cavium-octeon/executive/cvmx-bootmem.c
index 6d5ddbc112c..504ed61a47c 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-bootmem.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-bootmem.c
@@ -155,8 +155,8 @@ int cvmx_bootmem_init(void *mem_desc_ptr)
 	 *
 	 * Linux 64 bit: Set XKPHYS bit
 	 * Linux 32 bit: use mmap to create mapping, use virtual address
-	 * CVMX 64 bit:  use physical address directly
-	 * CVMX 32 bit:  use physical address directly
+	 * CVMX 64 bit:	 use physical address directly
+	 * CVMX 32 bit:	 use physical address directly
 	 *
 	 * Note that the CVMX environment assumes the use of 1-1 TLB
 	 * mappings so that the physical addresses can be used
@@ -398,7 +398,7 @@ error_out:
 int __cvmx_bootmem_phy_free(uint64_t phy_addr, uint64_t size, uint32_t flags)
 {
 	uint64_t cur_addr;
-	uint64_t prev_addr = 0;	/* zero is invalid */
+	uint64_t prev_addr = 0; /* zero is invalid */
 	int retval = 0;
 
 #ifdef DEBUG
@@ -424,7 +424,7 @@ int __cvmx_bootmem_phy_free(uint64_t phy_addr, uint64_t size, uint32_t flags)
 	if (cur_addr == 0 || phy_addr < cur_addr) {
 		/* add at front of list - special case with changing head ptr */
 		if (cur_addr && phy_addr + size > cur_addr)
-			goto bootmem_free_done;	/* error, overlapping section */
+			goto bootmem_free_done; /* error, overlapping section */
 		else if (phy_addr + size == cur_addr) {
 			/* Add to front of existing first block */
 			cvmx_bootmem_phy_set_next(phy_addr,
@@ -611,7 +611,7 @@ int cvmx_bootmem_phy_named_block_free(char *name, uint32_t flags)
 	}
 
 	cvmx_bootmem_unlock();
-	return named_block_ptr != NULL;	/* 0 on failure, 1 on success */
+	return named_block_ptr != NULL; /* 0 on failure, 1 on success */
 }
 
 int64_t cvmx_bootmem_phy_named_block_alloc(uint64_t size, uint64_t min_addr,
diff --git a/arch/mips/cavium-octeon/executive/cvmx-helper-board.c b/arch/mips/cavium-octeon/executive/cvmx-helper-board.c
index fd2015331a2..7c649778189 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-helper-board.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-helper-board.c
@@ -203,10 +203,10 @@ int cvmx_helper_board_get_mii_address(int ipd_port)
  * enumeration from the bootloader.
  *
  * @ipd_port: IPD input port associated with the port we want to get link
- *                 status for.
+ *		   status for.
  *
  * Returns The ports link status. If the link isn't fully resolved, this must
- *         return zero.
+ *	   return zero.
  */
 cvmx_helper_link_info_t __cvmx_helper_board_link_get(int ipd_port)
 {
@@ -357,16 +357,16 @@ cvmx_helper_link_info_t __cvmx_helper_board_link_get(int ipd_port)
 				result.s.link_up = 1;
 				result.s.full_duplex = ((phy_status >> 13) & 1);
 				switch ((phy_status >> 14) & 3) {
-				case 0:	/* 10 Mbps */
+				case 0: /* 10 Mbps */
 					result.s.speed = 10;
 					break;
-				case 1:	/* 100 Mbps */
+				case 1: /* 100 Mbps */
 					result.s.speed = 100;
 					break;
-				case 2:	/* 1 Gbps */
+				case 2: /* 1 Gbps */
 					result.s.speed = 1000;
 					break;
-				case 3:	/* Illegal */
+				case 3: /* Illegal */
 					result.u64 = 0;
 					break;
 				}
@@ -391,16 +391,16 @@ cvmx_helper_link_info_t __cvmx_helper_board_link_get(int ipd_port)
 		result.s.link_up = inband_status.s.status;
 		result.s.full_duplex = inband_status.s.duplex;
 		switch (inband_status.s.speed) {
-		case 0:	/* 10 Mbps */
+		case 0: /* 10 Mbps */
 			result.s.speed = 10;
 			break;
-		case 1:	/* 100 Mbps */
+		case 1: /* 100 Mbps */
 			result.s.speed = 100;
 			break;
-		case 2:	/* 1 Gbps */
+		case 2: /* 1 Gbps */
 			result.s.speed = 1000;
 			break;
-		case 3:	/* Illegal */
+		case 3: /* Illegal */
 			result.u64 = 0;
 			break;
 		}
@@ -429,9 +429,9 @@ cvmx_helper_link_info_t __cvmx_helper_board_link_get(int ipd_port)
  *
  * @phy_addr:  The address of the PHY to program
  * @enable_autoneg:
- *                  Non zero if you want to enable auto-negotiation.
+ *		    Non zero if you want to enable auto-negotiation.
  * @link_info: Link speed to program. If the speed is zero and auto-negotiation
- *                  is enabled, all possible negotiation speeds are advertised.
+ *		    is enabled, all possible negotiation speeds are advertised.
  *
  * Returns Zero on success, negative on failure
  */
@@ -607,10 +607,10 @@ int cvmx_helper_board_link_set_phy(int phy_addr,
  *
  * @interface: Interface to probe
  * @supported_ports:
- *                  Number of ports Octeon supports.
+ *		    Number of ports Octeon supports.
  *
  * Returns Number of ports the actual board supports. Many times this will
- *         simple be "support_ports".
+ *	   simple be "support_ports".
  */
 int __cvmx_helper_board_interface_probe(int interface, int supported_ports)
 {
diff --git a/arch/mips/cavium-octeon/executive/cvmx-helper-jtag.c b/arch/mips/cavium-octeon/executive/cvmx-helper-jtag.c
index c1c54890bae..607b4e65957 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-helper-jtag.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-helper-jtag.c
@@ -79,10 +79,10 @@ void cvmx_helper_qlm_jtag_init(void)
  * @qlm:    QLM to shift value into
  * @bits:   Number of bits to shift in (1-32).
  * @data:   Data to shift in. Bit 0 enters the chain first, followed by
- *               bit 1, etc.
+ *		 bit 1, etc.
  *
  * Returns The low order bits of the JTAG chain that shifted out of the
- *         circle.
+ *	   circle.
  */
 uint32_t cvmx_helper_qlm_jtag_shift(int qlm, int bits, uint32_t data)
 {
diff --git a/arch/mips/cavium-octeon/executive/cvmx-helper-rgmii.c b/arch/mips/cavium-octeon/executive/cvmx-helper-rgmii.c
index 82b21843421..f59c88ee9b3 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-helper-rgmii.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-helper-rgmii.c
@@ -131,7 +131,7 @@ void cvmx_helper_rgmii_internal_loopback(int port)
  * @interface: Interface to setup
  * @port:      Port to setup (0..3)
  * @cpu_clock_hz:
- *                  Chip frequency in Hertz
+ *		    Chip frequency in Hertz
  *
  * Returns Zero on success, negative on failure
  */
@@ -409,14 +409,14 @@ int __cvmx_helper_rgmii_link_set(int ipd_port,
 			mode.u64 = cvmx_read_csr(CVMX_GMXX_INF_MODE(interface));
 
 	/*
-	 * Port  .en  .type  .p0mii  Configuration
-	 * ----  ---  -----  ------  -----------------------------------------
-	 *  X      0     X      X    All links are disabled.
-	 *  0      1     X      0    Port 0 is RGMII
-	 *  0      1     X      1    Port 0 is MII
-	 *  1      1     0      X    Ports 1 and 2 are configured as RGMII ports.
-	 *  1      1     1      X    Port 1: GMII/MII; Port 2: disabled. GMII or
-	 *                           MII port is selected by GMX_PRT1_CFG[SPEED].
+	 * Port	 .en  .type  .p0mii  Configuration
+	 * ----	 ---  -----  ------  -----------------------------------------
+	 *  X	   0	 X	X    All links are disabled.
+	 *  0	   1	 X	0    Port 0 is RGMII
+	 *  0	   1	 X	1    Port 0 is MII
+	 *  1	   1	 0	X    Ports 1 and 2 are configured as RGMII ports.
+	 *  1	   1	 1	X    Port 1: GMII/MII; Port 2: disabled. GMII or
+	 *			     MII port is selected by GMX_PRT1_CFG[SPEED].
 	 */
 
 			/* In MII mode, CLK_CNT = 1. */
@@ -464,9 +464,9 @@ int __cvmx_helper_rgmii_link_set(int ipd_port,
  *
  * @ipd_port: IPD/PKO port to loopback.
  * @enable_internal:
- *                 Non zero if you want internal loopback
+ *		   Non zero if you want internal loopback
  * @enable_external:
- *                 Non zero if you want external loopback
+ *		   Non zero if you want external loopback
  *
  * Returns Zero on success, negative on failure.
  */
diff --git a/arch/mips/cavium-octeon/executive/cvmx-helper-sgmii.c b/arch/mips/cavium-octeon/executive/cvmx-helper-sgmii.c
index 0c0bf5d30e7..45f18cce31a 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-helper-sgmii.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-helper-sgmii.c
@@ -523,9 +523,9 @@ int __cvmx_helper_sgmii_link_set(int ipd_port,
  *
  * @ipd_port: IPD/PKO port to loopback.
  * @enable_internal:
- *                 Non zero if you want internal loopback
+ *		   Non zero if you want internal loopback
  * @enable_external:
- *                 Non zero if you want external loopback
+ *		   Non zero if you want external loopback
  *
  * Returns Zero on success, negative on failure.
  */
diff --git a/arch/mips/cavium-octeon/executive/cvmx-helper-spi.c b/arch/mips/cavium-octeon/executive/cvmx-helper-spi.c
index 2830e4bdf7f..1f3030c72d8 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-helper-spi.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-helper-spi.c
@@ -160,16 +160,16 @@ cvmx_helper_link_info_t __cvmx_helper_spi_link_get(int ipd_port)
 		result.s.link_up = inband.s.status;
 		result.s.full_duplex = inband.s.duplex;
 		switch (inband.s.speed) {
-		case 0:	/* 10 Mbps */
+		case 0: /* 10 Mbps */
 			result.s.speed = 10;
 			break;
-		case 1:	/* 100 Mbps */
+		case 1: /* 100 Mbps */
 			result.s.speed = 100;
 			break;
-		case 2:	/* 1 Gbps */
+		case 2: /* 1 Gbps */
 			result.s.speed = 1000;
 			break;
-		case 3:	/* Illegal */
+		case 3: /* Illegal */
 			result.s.speed = 0;
 			result.s.link_up = 0;
 			break;
diff --git a/arch/mips/cavium-octeon/executive/cvmx-helper-util.c b/arch/mips/cavium-octeon/executive/cvmx-helper-util.c
index dfdfe8bdc9c..65d2bc9a0bd 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-helper-util.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-helper-util.c
@@ -96,9 +96,9 @@ int cvmx_helper_dump_packet(cvmx_wqe_t *work)
 	uint8_t *end_of_data;
 
 	cvmx_dprintf("Packet Length:   %u\n", work->len);
-	cvmx_dprintf("    Input Port:  %u\n", work->ipprt);
-	cvmx_dprintf("    QoS:         %u\n", work->qos);
-	cvmx_dprintf("    Buffers:     %u\n", work->word2.s.bufs);
+	cvmx_dprintf("	  Input Port:  %u\n", work->ipprt);
+	cvmx_dprintf("	  QoS:	       %u\n", work->qos);
+	cvmx_dprintf("	  Buffers:     %u\n", work->word2.s.bufs);
 
 	if (work->word2.s.bufs == 0) {
 		union cvmx_ipd_wqe_fpa_queue wqe_pool;
@@ -132,14 +132,14 @@ int cvmx_helper_dump_packet(cvmx_wqe_t *work)
 	while (remaining_bytes) {
 		start_of_buffer =
 		    ((buffer_ptr.s.addr >> 7) - buffer_ptr.s.back) << 7;
-		cvmx_dprintf("    Buffer Start:%llx\n",
+		cvmx_dprintf("	  Buffer Start:%llx\n",
 			     (unsigned long long)start_of_buffer);
-		cvmx_dprintf("    Buffer I   : %u\n", buffer_ptr.s.i);
-		cvmx_dprintf("    Buffer Back: %u\n", buffer_ptr.s.back);
-		cvmx_dprintf("    Buffer Pool: %u\n", buffer_ptr.s.pool);
-		cvmx_dprintf("    Buffer Data: %llx\n",
+		cvmx_dprintf("	  Buffer I   : %u\n", buffer_ptr.s.i);
+		cvmx_dprintf("	  Buffer Back: %u\n", buffer_ptr.s.back);
+		cvmx_dprintf("	  Buffer Pool: %u\n", buffer_ptr.s.pool);
+		cvmx_dprintf("	  Buffer Data: %llx\n",
 			     (unsigned long long)buffer_ptr.s.addr);
-		cvmx_dprintf("    Buffer Size: %u\n", buffer_ptr.s.size);
+		cvmx_dprintf("	  Buffer Size: %u\n", buffer_ptr.s.size);
 
 		cvmx_dprintf("\t\t");
 		data_address = (uint8_t *) cvmx_phys_to_ptr(buffer_ptr.s.addr);
@@ -172,11 +172,11 @@ int cvmx_helper_dump_packet(cvmx_wqe_t *work)
  *
  * @queue:  Input queue to setup RED on (0-7)
  * @pass_thresh:
- *               Packets will begin slowly dropping when there are less than
- *               this many packet buffers free in FPA 0.
+ *		 Packets will begin slowly dropping when there are less than
+ *		 this many packet buffers free in FPA 0.
  * @drop_thresh:
- *               All incoming packets will be dropped when there are less
- *               than this many free packet buffers in FPA 0.
+ *		 All incoming packets will be dropped when there are less
+ *		 than this many free packet buffers in FPA 0.
  * Returns Zero on success. Negative on failure
  */
 int cvmx_helper_setup_red_queue(int queue, int pass_thresh, int drop_thresh)
@@ -207,11 +207,11 @@ int cvmx_helper_setup_red_queue(int queue, int pass_thresh, int drop_thresh)
  * Setup Random Early Drop to automatically begin dropping packets.
  *
  * @pass_thresh:
- *               Packets will begin slowly dropping when there are less than
- *               this many packet buffers free in FPA 0.
+ *		 Packets will begin slowly dropping when there are less than
+ *		 this many packet buffers free in FPA 0.
  * @drop_thresh:
- *               All incoming packets will be dropped when there are less
- *               than this many free packet buffers in FPA 0.
+ *		 All incoming packets will be dropped when there are less
+ *		 than this many free packet buffers in FPA 0.
  * Returns Zero on success. Negative on failure
  */
 int cvmx_helper_setup_red(int pass_thresh, int drop_thresh)
diff --git a/arch/mips/cavium-octeon/executive/cvmx-helper-xaui.c b/arch/mips/cavium-octeon/executive/cvmx-helper-xaui.c
index 1723248e987..7653b7e9219 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-helper-xaui.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-helper-xaui.c
@@ -321,9 +321,9 @@ int __cvmx_helper_xaui_link_set(int ipd_port, cvmx_helper_link_info_t link_info)
  *
  * @ipd_port: IPD/PKO port to loopback.
  * @enable_internal:
- *                 Non zero if you want internal loopback
+ *		   Non zero if you want internal loopback
  * @enable_external:
- *                 Non zero if you want external loopback
+ *		   Non zero if you want external loopback
  *
  * Returns Zero on success, negative on failure.
  */
diff --git a/arch/mips/cavium-octeon/executive/cvmx-helper.c b/arch/mips/cavium-octeon/executive/cvmx-helper.c
index fa496385635..d63d20dfbfb 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-helper.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-helper.c
@@ -111,7 +111,7 @@ int cvmx_helper_ports_on_interface(int interface)
  * @interface: Interface to probe
  *
  * Returns Mode of the interface. Unknown or unsupported interfaces return
- *         DISABLED.
+ *	   DISABLED.
  */
 cvmx_helper_interface_mode_t cvmx_helper_interface_get_mode(int interface)
 {
@@ -187,7 +187,7 @@ cvmx_helper_interface_mode_t cvmx_helper_interface_get_mode(int interface)
  * the defines in executive-config.h.
  *
  * @ipd_port: Port to configure. This follows the IPD numbering, not the
- *                 per interface numbering
+ *		   per interface numbering
  *
  * Returns Zero on success, negative on failure
  */
@@ -591,7 +591,7 @@ static int __cvmx_helper_packet_hardware_enable(int interface)
  * Function to adjust internal IPD pointer alignments
  *
  * Returns 0 on success
- *         !0 on failure
+ *	   !0 on failure
  */
 int __cvmx_helper_errata_fix_ipd_ptr_alignment(void)
 {
@@ -1068,9 +1068,9 @@ int cvmx_helper_link_set(int ipd_port, cvmx_helper_link_info_t link_info)
  *
  * @ipd_port: IPD/PKO port to loopback.
  * @enable_internal:
- *                 Non zero if you want internal loopback
+ *		   Non zero if you want internal loopback
  * @enable_external:
- *                 Non zero if you want external loopback
+ *		   Non zero if you want external loopback
  *
  * Returns Zero on success, negative on failure.
  */
diff --git a/arch/mips/cavium-octeon/executive/cvmx-interrupt-rsl.c b/arch/mips/cavium-octeon/executive/cvmx-interrupt-rsl.c
index 560e034aa02..fa327ec891c 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-interrupt-rsl.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-interrupt-rsl.c
@@ -85,11 +85,11 @@ void __cvmx_interrupt_gmxx_enable(int interface)
 	if (OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN52XX)) {
 		if (mode.s.en) {
 			switch (mode.cn56xx.mode) {
-			case 1:	/* XAUI */
+			case 1: /* XAUI */
 				num_ports = 1;
 				break;
-			case 2:	/* SGMII */
-			case 3:	/* PICMG */
+			case 2: /* SGMII */
+			case 3: /* PICMG */
 				num_ports = 4;
 				break;
 			default:	/* Disabled */
diff --git a/arch/mips/cavium-octeon/executive/cvmx-l2c.c b/arch/mips/cavium-octeon/executive/cvmx-l2c.c
index 33b72144db3..42e38c30b54 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-l2c.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-l2c.c
@@ -147,7 +147,7 @@ int cvmx_l2c_set_hw_way_partition(uint32_t mask)
 	mask &= valid_mask;
 
 	/* A UMSK setting which blocks all L2C Ways is an error on some chips */
-	if (mask == valid_mask  && !OCTEON_IS_MODEL(OCTEON_CN63XX))
+	if (mask == valid_mask	&& !OCTEON_IS_MODEL(OCTEON_CN63XX))
 		return -1;
 
 	if (OCTEON_IS_MODEL(OCTEON_CN63XX))
@@ -438,7 +438,7 @@ void cvmx_l2c_flush(void)
 		for (set = 0; set < n_set; set++) {
 			for (assoc = 0; assoc < n_assoc; assoc++) {
 				address = CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS,
-						       (assoc << assoc_shift) |	(set << set_shift));
+						       (assoc << assoc_shift) | (set << set_shift));
 				CVMX_CACHE_WBIL2I(address, 0);
 			}
 		}
@@ -573,8 +573,8 @@ union __cvmx_l2c_tag {
  * @index:  Index of the cacheline
  *
  * Returns The Octeon model specific tag structure.  This is
- *         translated by a wrapper function to a generic form that is
- *         easier for applications to use.
+ *	   translated by a wrapper function to a generic form that is
+ *	   easier for applications to use.
  */
 static union __cvmx_l2c_tag __read_l2_tag(uint64_t assoc, uint64_t index)
 {
@@ -618,12 +618,12 @@ static union __cvmx_l2c_tag __read_l2_tag(uint64_t assoc, uint64_t index)
 		".set push\n\t"
 		".set mips64\n\t"
 		".set noreorder\n\t"
-		"sd    %[dbg_val], 0(%[dbg_addr])\n\t"   /* Enter debug mode, wait for store */
+		"sd    %[dbg_val], 0(%[dbg_addr])\n\t"	 /* Enter debug mode, wait for store */
 		"ld    $0, 0(%[dbg_addr])\n\t"
-		"ld    %[tag_val], 0(%[tag_addr])\n\t"   /* Read L2C tag data */
-		"sd    $0, 0(%[dbg_addr])\n\t"          /* Exit debug mode, wait for store */
+		"ld    %[tag_val], 0(%[tag_addr])\n\t"	 /* Read L2C tag data */
+		"sd    $0, 0(%[dbg_addr])\n\t"		/* Exit debug mode, wait for store */
 		"ld    $0, 0(%[dbg_addr])\n\t"
-		"cache 9, 0($0)\n\t"             /* Invalidate dcache to discard debug data */
+		"cache 9, 0($0)\n\t"		 /* Invalidate dcache to discard debug data */
 		".set pop"
 		: [tag_val] "=r" (tag_val)
 		: [dbg_addr] "r" (dbg_addr), [dbg_val] "r" (debug_val), [tag_addr] "r" (debug_tag_addr)
@@ -664,10 +664,10 @@ union cvmx_l2c_tag cvmx_l2c_get_tag(uint32_t association, uint32_t index)
 		CVMX_SYNC;   /* make sure CVMX_L2C_TADX_TAG is updated */
 		l2c_tadx_tag.u64 = cvmx_read_csr(CVMX_L2C_TADX_TAG(0));
 
-		tag.s.V     = l2c_tadx_tag.s.valid;
-		tag.s.D     = l2c_tadx_tag.s.dirty;
-		tag.s.L     = l2c_tadx_tag.s.lock;
-		tag.s.U     = l2c_tadx_tag.s.use;
+		tag.s.V	    = l2c_tadx_tag.s.valid;
+		tag.s.D	    = l2c_tadx_tag.s.dirty;
+		tag.s.L	    = l2c_tadx_tag.s.lock;
+		tag.s.U	    = l2c_tadx_tag.s.use;
 		tag.s.addr  = l2c_tadx_tag.s.tag;
 	} else {
 		union __cvmx_l2c_tag tmp_tag;
@@ -679,34 +679,34 @@ union cvmx_l2c_tag cvmx_l2c_get_tag(uint32_t association, uint32_t index)
 		 * as it can represent all models.
 		 */
 		if (OCTEON_IS_MODEL(OCTEON_CN58XX) || OCTEON_IS_MODEL(OCTEON_CN56XX)) {
-			tag.s.V    = tmp_tag.cn58xx.V;
-			tag.s.D    = tmp_tag.cn58xx.D;
-			tag.s.L    = tmp_tag.cn58xx.L;
-			tag.s.U    = tmp_tag.cn58xx.U;
+			tag.s.V	   = tmp_tag.cn58xx.V;
+			tag.s.D	   = tmp_tag.cn58xx.D;
+			tag.s.L	   = tmp_tag.cn58xx.L;
+			tag.s.U	   = tmp_tag.cn58xx.U;
 			tag.s.addr = tmp_tag.cn58xx.addr;
 		} else if (OCTEON_IS_MODEL(OCTEON_CN38XX)) {
-			tag.s.V    = tmp_tag.cn38xx.V;
-			tag.s.D    = tmp_tag.cn38xx.D;
-			tag.s.L    = tmp_tag.cn38xx.L;
-			tag.s.U    = tmp_tag.cn38xx.U;
+			tag.s.V	   = tmp_tag.cn38xx.V;
+			tag.s.D	   = tmp_tag.cn38xx.D;
+			tag.s.L	   = tmp_tag.cn38xx.L;
+			tag.s.U	   = tmp_tag.cn38xx.U;
 			tag.s.addr = tmp_tag.cn38xx.addr;
 		} else if (OCTEON_IS_MODEL(OCTEON_CN31XX) || OCTEON_IS_MODEL(OCTEON_CN52XX)) {
-			tag.s.V    = tmp_tag.cn31xx.V;
-			tag.s.D    = tmp_tag.cn31xx.D;
-			tag.s.L    = tmp_tag.cn31xx.L;
-			tag.s.U    = tmp_tag.cn31xx.U;
+			tag.s.V	   = tmp_tag.cn31xx.V;
+			tag.s.D	   = tmp_tag.cn31xx.D;
+			tag.s.L	   = tmp_tag.cn31xx.L;
+			tag.s.U	   = tmp_tag.cn31xx.U;
 			tag.s.addr = tmp_tag.cn31xx.addr;
 		} else if (OCTEON_IS_MODEL(OCTEON_CN30XX)) {
-			tag.s.V    = tmp_tag.cn30xx.V;
-			tag.s.D    = tmp_tag.cn30xx.D;
-			tag.s.L    = tmp_tag.cn30xx.L;
-			tag.s.U    = tmp_tag.cn30xx.U;
+			tag.s.V	   = tmp_tag.cn30xx.V;
+			tag.s.D	   = tmp_tag.cn30xx.D;
+			tag.s.L	   = tmp_tag.cn30xx.L;
+			tag.s.U	   = tmp_tag.cn30xx.U;
 			tag.s.addr = tmp_tag.cn30xx.addr;
 		} else if (OCTEON_IS_MODEL(OCTEON_CN50XX)) {
-			tag.s.V    = tmp_tag.cn50xx.V;
-			tag.s.D    = tmp_tag.cn50xx.D;
-			tag.s.L    = tmp_tag.cn50xx.L;
-			tag.s.U    = tmp_tag.cn50xx.U;
+			tag.s.V	   = tmp_tag.cn50xx.V;
+			tag.s.D	   = tmp_tag.cn50xx.D;
+			tag.s.L	   = tmp_tag.cn50xx.L;
+			tag.s.U	   = tmp_tag.cn50xx.U;
 			tag.s.addr = tmp_tag.cn50xx.addr;
 		} else {
 			cvmx_dprintf("Unsupported OCTEON Model in %s\n", __func__);
@@ -865,7 +865,7 @@ void cvmx_l2c_flush_line(uint32_t assoc, uint32_t index)
 		uint64_t address;
 		/* Create the address based on index and association.
 		 * Bits<20:17> select the way of the cache block involved in
-		 *             the operation
+		 *	       the operation
 		 * Bits<16:7> of the effect address select the index
 		 */
 		address = CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS,
diff --git a/arch/mips/cavium-octeon/executive/cvmx-pko.c b/arch/mips/cavium-octeon/executive/cvmx-pko.c
index f557084b109..f2c87754159 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-pko.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-pko.c
@@ -99,7 +99,7 @@ void cvmx_pko_initialize_global(void)
  * be called after the FPA has been initialized and filled with pages.
  *
  * Returns 0 on success
- *         !0 on failure
+ *	   !0 on failure
  */
 int cvmx_pko_initialize_local(void)
 {
@@ -186,19 +186,19 @@ void cvmx_pko_shutdown(void)
 /**
  * Configure a output port and the associated queues for use.
  *
- * @port:       Port to configure.
+ * @port:	Port to configure.
  * @base_queue: First queue number to associate with this port.
  * @num_queues: Number of queues to associate with this port
- * @priority:   Array of priority levels for each queue. Values are
- *                   allowed to be 0-8. A value of 8 get 8 times the traffic
- *                   of a value of 1.  A value of 0 indicates that no rounds
- *                   will be participated in. These priorities can be changed
- *                   on the fly while the pko is enabled. A priority of 9
- *                   indicates that static priority should be used.  If static
- *                   priority is used all queues with static priority must be
- *                   contiguous starting at the base_queue, and lower numbered
- *                   queues have higher priority than higher numbered queues.
- *                   There must be num_queues elements in the array.
+ * @priority:	Array of priority levels for each queue. Values are
+ *		     allowed to be 0-8. A value of 8 get 8 times the traffic
+ *		     of a value of 1.  A value of 0 indicates that no rounds
+ *		     will be participated in. These priorities can be changed
+ *		     on the fly while the pko is enabled. A priority of 9
+ *		     indicates that static priority should be used.  If static
+ *		     priority is used all queues with static priority must be
+ *		     contiguous starting at the base_queue, and lower numbered
+ *		     queues have higher priority than higher numbered queues.
+ *		     There must be num_queues elements in the array.
  */
 cvmx_pko_status_t cvmx_pko_config_port(uint64_t port, uint64_t base_queue,
 				       uint64_t num_queues,
@@ -440,7 +440,7 @@ void cvmx_pko_show_queue_map()
  * @port:      Port to rate limit
  * @packets_s: Maximum packet/sec
  * @burst:     Maximum number of packets to burst in a row before rate
- *                  limiting cuts in.
+ *		    limiting cuts in.
  *
  * Returns Zero on success, negative on failure
  */
@@ -473,7 +473,7 @@ int cvmx_pko_rate_limit_packets(int port, int packets_s, int burst)
  * @port:   Port to rate limit
  * @bits_s: PKO rate limit in bits/sec
  * @burst:  Maximum number of bits to burst before rate
- *               limiting cuts in.
+ *		 limiting cuts in.
  *
  * Returns Zero on success, negative on failure
  */
diff --git a/arch/mips/cavium-octeon/executive/cvmx-spi.c b/arch/mips/cavium-octeon/executive/cvmx-spi.c
index 74afb1710cd..ef5198d13a0 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-spi.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-spi.c
@@ -69,7 +69,7 @@ static cvmx_spi_callbacks_t cvmx_spi_callbacks = {
 /**
  * Get current SPI4 initialization callbacks
  *
- * @callbacks:  Pointer to the callbacks structure.to fill
+ * @callbacks:	Pointer to the callbacks structure.to fill
  *
  * Returns Pointer to cvmx_spi_callbacks_t structure.
  */
@@ -92,11 +92,11 @@ void cvmx_spi_set_callbacks(cvmx_spi_callbacks_t *new_callbacks)
  * Initialize and start the SPI interface.
  *
  * @interface: The identifier of the packet interface to configure and
- *                  use as a SPI interface.
+ *		    use as a SPI interface.
  * @mode:      The operating mode for the SPI interface. The interface
- *                  can operate as a full duplex (both Tx and Rx data paths
- *                  active) or as a halfplex (either the Tx data path is
- *                  active or the Rx data path is active, but not both).
+ *		    can operate as a full duplex (both Tx and Rx data paths
+ *		    active) or as a halfplex (either the Tx data path is
+ *		    active or the Rx data path is active, but not both).
  * @timeout:   Timeout to wait for clock synchronization in seconds
  * @num_ports: Number of SPI ports to configure
  *
@@ -138,11 +138,11 @@ int cvmx_spi_start_interface(int interface, cvmx_spi_mode_t mode, int timeout,
  * with its correspondent system.
  *
  * @interface: The identifier of the packet interface to configure and
- *                  use as a SPI interface.
+ *		    use as a SPI interface.
  * @mode:      The operating mode for the SPI interface. The interface
- *                  can operate as a full duplex (both Tx and Rx data paths
- *                  active) or as a halfplex (either the Tx data path is
- *                  active or the Rx data path is active, but not both).
+ *		    can operate as a full duplex (both Tx and Rx data paths
+ *		    active) or as a halfplex (either the Tx data path is
+ *		    active or the Rx data path is active, but not both).
  * @timeout:   Timeout to wait for clock synchronization in seconds
  *
  * Returns Zero on success, negative of failure.
@@ -160,7 +160,7 @@ int cvmx_spi_restart_interface(int interface, cvmx_spi_mode_t mode, int timeout)
 	INVOKE_CB(cvmx_spi_callbacks.reset_cb, interface, mode);
 
 	/* NOTE: Calendar setup is not performed during restart */
-	/*       Refer to cvmx_spi_start_interface() for the full sequence */
+	/*	 Refer to cvmx_spi_start_interface() for the full sequence */
 
 	/* Callback to perform clock detection */
 	INVOKE_CB(cvmx_spi_callbacks.clock_detect_cb, interface, mode, timeout);
@@ -182,11 +182,11 @@ int cvmx_spi_restart_interface(int interface, cvmx_spi_mode_t mode, int timeout)
  * Callback to perform SPI4 reset
  *
  * @interface: The identifier of the packet interface to configure and
- *                  use as a SPI interface.
+ *		    use as a SPI interface.
  * @mode:      The operating mode for the SPI interface. The interface
- *                  can operate as a full duplex (both Tx and Rx data paths
- *                  active) or as a halfplex (either the Tx data path is
- *                  active or the Rx data path is active, but not both).
+ *		    can operate as a full duplex (both Tx and Rx data paths
+ *		    active) or as a halfplex (either the Tx data path is
+ *		    active or the Rx data path is active, but not both).
  *
  * Returns Zero on success, non-zero error code on failure (will cause
  * SPI initialization to abort)
@@ -297,11 +297,11 @@ int cvmx_spi_reset_cb(int interface, cvmx_spi_mode_t mode)
  * Callback to setup calendar and miscellaneous settings before clock detection
  *
  * @interface: The identifier of the packet interface to configure and
- *                  use as a SPI interface.
+ *		    use as a SPI interface.
  * @mode:      The operating mode for the SPI interface. The interface
- *                  can operate as a full duplex (both Tx and Rx data paths
- *                  active) or as a halfplex (either the Tx data path is
- *                  active or the Rx data path is active, but not both).
+ *		    can operate as a full duplex (both Tx and Rx data paths
+ *		    active) or as a halfplex (either the Tx data path is
+ *		    active or the Rx data path is active, but not both).
  * @num_ports: Number of ports to configure on SPI
  *
  * Returns Zero on success, non-zero error code on failure (will cause
@@ -382,7 +382,7 @@ int cvmx_spi_calendar_setup_cb(int interface, cvmx_spi_mode_t mode,
 		stxx_spi4_dat.u64 = 0;
 		/*Minimum needed by dynamic alignment */
 		stxx_spi4_dat.s.alpha = 32;
-		stxx_spi4_dat.s.max_t = 0xFFFF;	/*Minimum interval is 0x20 */
+		stxx_spi4_dat.s.max_t = 0xFFFF; /*Minimum interval is 0x20 */
 		cvmx_write_csr(CVMX_STXX_SPI4_DAT(interface),
 			       stxx_spi4_dat.u64);
 
@@ -416,11 +416,11 @@ int cvmx_spi_calendar_setup_cb(int interface, cvmx_spi_mode_t mode,
  * Callback to perform clock detection
  *
  * @interface: The identifier of the packet interface to configure and
- *                  use as a SPI interface.
+ *		    use as a SPI interface.
  * @mode:      The operating mode for the SPI interface. The interface
- *                  can operate as a full duplex (both Tx and Rx data paths
- *                  active) or as a halfplex (either the Tx data path is
- *                  active or the Rx data path is active, but not both).
+ *		    can operate as a full duplex (both Tx and Rx data paths
+ *		    active) or as a halfplex (either the Tx data path is
+ *		    active or the Rx data path is active, but not both).
  * @timeout:   Timeout to wait for clock synchronization in seconds
  *
  * Returns Zero on success, non-zero error code on failure (will cause
@@ -494,11 +494,11 @@ int cvmx_spi_clock_detect_cb(int interface, cvmx_spi_mode_t mode, int timeout)
  * Callback to perform link training
  *
  * @interface: The identifier of the packet interface to configure and
- *                  use as a SPI interface.
+ *		    use as a SPI interface.
  * @mode:      The operating mode for the SPI interface. The interface
- *                  can operate as a full duplex (both Tx and Rx data paths
- *                  active) or as a halfplex (either the Tx data path is
- *                  active or the Rx data path is active, but not both).
+ *		    can operate as a full duplex (both Tx and Rx data paths
+ *		    active) or as a halfplex (either the Tx data path is
+ *		    active or the Rx data path is active, but not both).
  * @timeout:   Timeout to wait for link to be trained (in seconds)
  *
  * Returns Zero on success, non-zero error code on failure (will cause
@@ -563,11 +563,11 @@ int cvmx_spi_training_cb(int interface, cvmx_spi_mode_t mode, int timeout)
  * Callback to perform calendar data synchronization
  *
  * @interface: The identifier of the packet interface to configure and
- *                  use as a SPI interface.
+ *		    use as a SPI interface.
  * @mode:      The operating mode for the SPI interface. The interface
- *                  can operate as a full duplex (both Tx and Rx data paths
- *                  active) or as a halfplex (either the Tx data path is
- *                  active or the Rx data path is active, but not both).
+ *		    can operate as a full duplex (both Tx and Rx data paths
+ *		    active) or as a halfplex (either the Tx data path is
+ *		    active or the Rx data path is active, but not both).
  * @timeout:   Timeout to wait for calendar data in seconds
  *
  * Returns Zero on success, non-zero error code on failure (will cause
@@ -620,11 +620,11 @@ int cvmx_spi_calendar_sync_cb(int interface, cvmx_spi_mode_t mode, int timeout)
  * Callback to handle interface up
  *
  * @interface: The identifier of the packet interface to configure and
- *                  use as a SPI interface.
+ *		    use as a SPI interface.
  * @mode:      The operating mode for the SPI interface. The interface
- *                  can operate as a full duplex (both Tx and Rx data paths
- *                  active) or as a halfplex (either the Tx data path is
- *                  active or the Rx data path is active, but not both).
+ *		    can operate as a full duplex (both Tx and Rx data paths
+ *		    active) or as a halfplex (either the Tx data path is
+ *		    active or the Rx data path is active, but not both).
  *
  * Returns Zero on success, non-zero error code on failure (will cause
  * SPI initialization to abort)
diff --git a/arch/mips/cavium-octeon/executive/cvmx-sysinfo.c b/arch/mips/cavium-octeon/executive/cvmx-sysinfo.c
index 8b18a20cc7b..3d17fac2935 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-sysinfo.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-sysinfo.c
@@ -74,26 +74,26 @@ EXPORT_SYMBOL(cvmx_sysinfo_get);
 
 /**
  * This function is used in non-simple executive environments (such as
- * Linux kernel, u-boot, etc.)  to configure the minimal fields that
+ * Linux kernel, u-boot, etc.)	to configure the minimal fields that
  * are required to use simple executive files directly.
  *
  * Locking (if required) must be handled outside of this
  * function
  *
  * @phy_mem_desc_ptr:
- *                   Pointer to global physical memory descriptor
- *                   (bootmem descriptor) @board_type: Octeon board
- *                   type enumeration
+ *		     Pointer to global physical memory descriptor
+ *		     (bootmem descriptor) @board_type: Octeon board
+ *		     type enumeration
  *
  * @board_rev_major:
- *                   Board major revision
+ *		     Board major revision
  * @board_rev_minor:
- *                   Board minor revision
+ *		     Board minor revision
  * @cpu_clock_hz:
- *                   CPU clock freqency in hertz
+ *		     CPU clock freqency in hertz
  *
  * Returns 0: Failure
- *         1: success
+ *	   1: success
  */
 int cvmx_sysinfo_minimal_initialize(void *phy_mem_desc_ptr,
 				    uint16_t board_type,
diff --git a/arch/mips/cavium-octeon/oct_ilm.c b/arch/mips/cavium-octeon/oct_ilm.c
new file mode 100644
index 00000000000..71b213dbb62
--- /dev/null
+++ b/arch/mips/cavium-octeon/oct_ilm.c
@@ -0,0 +1,206 @@
+#include <linux/fs.h>
+#include <linux/interrupt.h>
+#include <asm/octeon/octeon.h>
+#include <asm/octeon/cvmx-ciu-defs.h>
+#include <asm/octeon/cvmx.h>
+#include <linux/debugfs.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/seq_file.h>
+
+#define TIMER_NUM 3
+
+static bool reset_stats;
+
+struct latency_info {
+	u64 io_interval;
+	u64 cpu_interval;
+	u64 timer_start1;
+	u64 timer_start2;
+	u64 max_latency;
+	u64 min_latency;
+	u64 latency_sum;
+	u64 average_latency;
+	u64 interrupt_cnt;
+};
+
+static struct latency_info li;
+static struct dentry *dir;
+
+static int show_latency(struct seq_file *m, void *v)
+{
+	u64 cpuclk, avg, max, min;
+	struct latency_info curr_li = li;
+
+	cpuclk = octeon_get_clock_rate();
+
+	max = (curr_li.max_latency * 1000000000) / cpuclk;
+	min = (curr_li.min_latency * 1000000000) / cpuclk;
+	avg = (curr_li.latency_sum * 1000000000) / (cpuclk * curr_li.interrupt_cnt);
+
+	seq_printf(m, "cnt: %10lld, avg: %7lld ns, max: %7lld ns, min: %7lld ns\n",
+		   curr_li.interrupt_cnt, avg, max, min);
+	return 0;
+}
+
+static int oct_ilm_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, show_latency, NULL);
+}
+
+static const struct file_operations oct_ilm_ops = {
+	.open = oct_ilm_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+static int reset_statistics(void *data, u64 value)
+{
+	reset_stats = true;
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(reset_statistics_ops, NULL, reset_statistics, "%llu\n");
+
+static int init_debufs(void)
+{
+	struct dentry *show_dentry;
+	dir = debugfs_create_dir("oct_ilm", 0);
+	if (!dir) {
+		pr_err("oct_ilm: failed to create debugfs entry oct_ilm\n");
+		return -1;
+	}
+
+	show_dentry = debugfs_create_file("statistics", 0222, dir, NULL,
+					  &oct_ilm_ops);
+	if (!show_dentry) {
+		pr_err("oct_ilm: failed to create debugfs entry oct_ilm/statistics\n");
+		return -1;
+	}
+
+	show_dentry = debugfs_create_file("reset", 0222, dir, NULL,
+					  &reset_statistics_ops);
+	if (!show_dentry) {
+		pr_err("oct_ilm: failed to create debugfs entry oct_ilm/reset\n");
+		return -1;
+	}
+
+	return 0;
+
+}
+
+static void init_latency_info(struct latency_info *li, int startup)
+{
+	/* interval in milli seconds after which the interrupt will
+	 * be triggered
+	 */
+	int interval = 1;
+
+	if (startup) {
+		/* Calculating by the amounts io clock and cpu clock would
+		 *  increment in interval amount of ms
+		 */
+		li->io_interval = (octeon_get_io_clock_rate() * interval) / 1000;
+		li->cpu_interval = (octeon_get_clock_rate() * interval) / 1000;
+	}
+	li->timer_start1 = 0;
+	li->timer_start2 = 0;
+	li->max_latency = 0;
+	li->min_latency = (u64)-1;
+	li->latency_sum = 0;
+	li->interrupt_cnt = 0;
+}
+
+
+static void start_timer(int timer, u64 interval)
+{
+	union cvmx_ciu_timx timx;
+	unsigned long flags;
+
+	timx.u64 = 0;
+	timx.s.one_shot = 1;
+	timx.s.len = interval;
+	raw_local_irq_save(flags);
+	li.timer_start1 = read_c0_cvmcount();
+	cvmx_write_csr(CVMX_CIU_TIMX(timer), timx.u64);
+	/* Read it back to force wait until register is written. */
+	timx.u64 = cvmx_read_csr(CVMX_CIU_TIMX(timer));
+	li.timer_start2 = read_c0_cvmcount();
+	raw_local_irq_restore(flags);
+}
+
+
+static irqreturn_t cvm_oct_ciu_timer_interrupt(int cpl, void *dev_id)
+{
+	u64 last_latency;
+	u64 last_int_cnt;
+
+	if (reset_stats) {
+		init_latency_info(&li, 0);
+		reset_stats = false;
+	} else {
+		last_int_cnt = read_c0_cvmcount();
+		last_latency = last_int_cnt - (li.timer_start1 + li.cpu_interval);
+		li.interrupt_cnt++;
+		li.latency_sum += last_latency;
+		if (last_latency > li.max_latency)
+			li.max_latency = last_latency;
+		if (last_latency < li.min_latency)
+			li.min_latency = last_latency;
+	}
+	start_timer(TIMER_NUM, li.io_interval);
+	return IRQ_HANDLED;
+}
+
+static void disable_timer(int timer)
+{
+	union cvmx_ciu_timx timx;
+
+	timx.s.one_shot = 0;
+	timx.s.len = 0;
+	cvmx_write_csr(CVMX_CIU_TIMX(timer), timx.u64);
+	/* Read it back to force immediate write of timer register*/
+	timx.u64 = cvmx_read_csr(CVMX_CIU_TIMX(timer));
+}
+
+static __init int oct_ilm_module_init(void)
+{
+	int rc;
+	int irq = OCTEON_IRQ_TIMER0 + TIMER_NUM;
+
+	rc = init_debufs();
+	if (rc) {
+		WARN(1, "Could not create debugfs entries");
+		return rc;
+	}
+
+	rc = request_irq(irq, cvm_oct_ciu_timer_interrupt, IRQF_NO_THREAD,
+			 "oct_ilm", 0);
+	if (rc) {
+		WARN(1, "Could not acquire IRQ %d", irq);
+		goto err_irq;
+	}
+
+	init_latency_info(&li, 1);
+	start_timer(TIMER_NUM, li.io_interval);
+
+	return 0;
+err_irq:
+	debugfs_remove_recursive(dir);
+	return rc;
+}
+
+static __exit void oct_ilm_module_exit(void)
+{
+	disable_timer(TIMER_NUM);
+	if (dir)
+		debugfs_remove_recursive(dir);
+	free_irq(OCTEON_IRQ_TIMER0 + TIMER_NUM, 0);
+}
+
+module_exit(oct_ilm_module_exit);
+module_init(oct_ilm_module_init);
+MODULE_AUTHOR("Venkat Subbiah, Cavium");
+MODULE_DESCRIPTION("Measures interrupt latency on Octeon chips.");
+MODULE_LICENSE("GPL");
diff --git a/arch/mips/cavium-octeon/octeon-irq.c b/arch/mips/cavium-octeon/octeon-irq.c
index 46f5dbceeec..156aa6143e1 100644
--- a/arch/mips/cavium-octeon/octeon-irq.c
+++ b/arch/mips/cavium-octeon/octeon-irq.c
@@ -1542,7 +1542,7 @@ static bool octeon_irq_ciu2_is_edge(unsigned int line, unsigned int bit)
 
 	if (line == 3) /* MIO */
 		switch (bit) {
-		case 2:  /* IPD_DRP */
+		case 2:	 /* IPD_DRP */
 		case 8 ... 11: /* Timers */
 		case 48: /* PTP */
 			edge = true;
@@ -1553,7 +1553,7 @@ static bool octeon_irq_ciu2_is_edge(unsigned int line, unsigned int bit)
 	else if (line == 6) /* PKT */
 		switch (bit) {
 		case 52 ... 53: /* ILK_DRP */
-		case 8 ... 12:  /* GMX_DRP */
+		case 8 ... 12:	/* GMX_DRP */
 			edge = true;
 			break;
 		default:
diff --git a/arch/mips/cavium-octeon/octeon-memcpy.S b/arch/mips/cavium-octeon/octeon-memcpy.S
index 0ba0eb96d9a..64e08df51d6 100644
--- a/arch/mips/cavium-octeon/octeon-memcpy.S
+++ b/arch/mips/cavium-octeon/octeon-memcpy.S
@@ -116,15 +116,15 @@
 
 #ifdef CONFIG_CPU_LITTLE_ENDIAN
 #define LDFIRST LOADR
-#define LDREST  LOADL
+#define LDREST	LOADL
 #define STFIRST STORER
-#define STREST  STOREL
+#define STREST	STOREL
 #define SHIFT_DISCARD SLLV
 #else
 #define LDFIRST LOADL
-#define LDREST  LOADR
+#define LDREST	LOADR
 #define STFIRST STOREL
-#define STREST  STORER
+#define STREST	STORER
 #define SHIFT_DISCARD SRLV
 #endif
 
@@ -316,9 +316,9 @@ EXC(	 STORE	t0, -8(dst),		s_exc_p1u)
 
 src_unaligned:
 #define rem t8
-	SRL	t0, len, LOG_NBYTES+2    # +2 for 4 units/iter
+	SRL	t0, len, LOG_NBYTES+2	 # +2 for 4 units/iter
 	beqz	t0, cleanup_src_unaligned
-	 and	rem, len, (4*NBYTES-1)   # rem = len % 4*NBYTES
+	 and	rem, len, (4*NBYTES-1)	 # rem = len % 4*NBYTES
 1:
 /*
  * Avoid consecutive LD*'s to the same register since some mips
@@ -326,13 +326,13 @@ src_unaligned:
  * It's OK to load FIRST(N+1) before REST(N) because the two addresses
  * are to the same unit (unless src is aligned, but it's not).
  */
-EXC(	LDFIRST	t0, FIRST(0)(src),	l_exc)
-EXC(	LDFIRST	t1, FIRST(1)(src),	l_exc_copy)
-	SUB     len, len, 4*NBYTES
+EXC(	LDFIRST t0, FIRST(0)(src),	l_exc)
+EXC(	LDFIRST t1, FIRST(1)(src),	l_exc_copy)
+	SUB	len, len, 4*NBYTES
 EXC(	LDREST	t0, REST(0)(src),	l_exc_copy)
 EXC(	LDREST	t1, REST(1)(src),	l_exc_copy)
-EXC(	LDFIRST	t2, FIRST(2)(src),	l_exc_copy)
-EXC(	LDFIRST	t3, FIRST(3)(src),	l_exc_copy)
+EXC(	LDFIRST t2, FIRST(2)(src),	l_exc_copy)
+EXC(	LDFIRST t3, FIRST(3)(src),	l_exc_copy)
 EXC(	LDREST	t2, REST(2)(src),	l_exc_copy)
 EXC(	LDREST	t3, REST(3)(src),	l_exc_copy)
 	ADD	src, src, 4*NBYTES
diff --git a/arch/mips/cavium-octeon/octeon-platform.c b/arch/mips/cavium-octeon/octeon-platform.c
index 3c1b625a585..389512e2abd 100644
--- a/arch/mips/cavium-octeon/octeon-platform.c
+++ b/arch/mips/cavium-octeon/octeon-platform.c
@@ -410,7 +410,7 @@ int __init octeon_prune_device_tree(void)
 	pip_path = fdt_getprop(initial_boot_params, aliases, "pip", NULL);
 	if (pip_path) {
 		int pip = fdt_path_offset(initial_boot_params, pip_path);
-		if (pip  >= 0)
+		if (pip	 >= 0)
 			for (i = 0; i <= 4; i++)
 				octeon_fdt_pip_iface(pip, i, &mac_addr_base);
 	}
diff --git a/arch/mips/cavium-octeon/octeon_3xxx.dts b/arch/mips/cavium-octeon/octeon_3xxx.dts
index f28b2d0fde2..88cb42d4cc4 100644
--- a/arch/mips/cavium-octeon/octeon_3xxx.dts
+++ b/arch/mips/cavium-octeon/octeon_3xxx.dts
@@ -3,7 +3,7 @@
  * OCTEON 3XXX, 5XXX, 63XX device tree skeleton.
  *
  * This device tree is pruned and patched by early boot code before
- * use.  Because of this, it contains a super-set of the available
+ * use.	 Because of this, it contains a super-set of the available
  * devices and properties.
  */
 / {
@@ -433,12 +433,12 @@
 				cavium,t-we   = <45>;
 				cavium,t-rd-hld = <35>;
 				cavium,t-wr-hld = <45>;
-				cavium,t-pause  = <0>;
-				cavium,t-wait   = <0>;
-				cavium,t-page   = <35>;
+				cavium,t-pause	= <0>;
+				cavium,t-wait	= <0>;
+				cavium,t-page	= <35>;
 				cavium,t-rd-dly = <0>;
 
-				cavium,pages     = <0>;
+				cavium,pages	 = <0>;
 				cavium,bus-width = <8>;
 			};
 			cavium,cs-config@4 {
@@ -450,12 +450,12 @@
 				cavium,t-we   = <320>;
 				cavium,t-rd-hld = <320>;
 				cavium,t-wr-hld = <320>;
-				cavium,t-pause  = <320>;
-				cavium,t-wait   = <320>;
-				cavium,t-page   = <320>;
+				cavium,t-pause	= <320>;
+				cavium,t-wait	= <320>;
+				cavium,t-page	= <320>;
 				cavium,t-rd-dly = <0>;
 
-				cavium,pages     = <0>;
+				cavium,pages	 = <0>;
 				cavium,bus-width = <8>;
 			};
 			cavium,cs-config@5 {
@@ -467,12 +467,12 @@
 				cavium,t-we   = <150>;
 				cavium,t-rd-hld = <100>;
 				cavium,t-wr-hld = <30>;
-				cavium,t-pause  = <0>;
-				cavium,t-wait   = <30>;
-				cavium,t-page   = <320>;
+				cavium,t-pause	= <0>;
+				cavium,t-wait	= <30>;
+				cavium,t-page	= <320>;
 				cavium,t-rd-dly = <0>;
 
-				cavium,pages     = <0>;
+				cavium,pages	 = <0>;
 				cavium,bus-width = <16>;
 			};
 			cavium,cs-config@6 {
@@ -484,12 +484,12 @@
 				cavium,t-we   = <150>;
 				cavium,t-rd-hld = <100>;
 				cavium,t-wr-hld = <70>;
-				cavium,t-pause  = <0>;
-				cavium,t-wait   = <0>;
-				cavium,t-page   = <320>;
+				cavium,t-pause	= <0>;
+				cavium,t-wait	= <0>;
+				cavium,t-page	= <320>;
 				cavium,t-rd-dly = <0>;
 
-				cavium,pages     = <0>;
+				cavium,pages	 = <0>;
 				cavium,wait-mode;
 				cavium,bus-width = <16>;
 			};
diff --git a/arch/mips/cavium-octeon/octeon_68xx.dts b/arch/mips/cavium-octeon/octeon_68xx.dts
index 1839468932b..79b46fcb0a1 100644
--- a/arch/mips/cavium-octeon/octeon_68xx.dts
+++ b/arch/mips/cavium-octeon/octeon_68xx.dts
@@ -3,7 +3,7 @@
  * OCTEON 68XX device tree skeleton.
  *
  * This device tree is pruned and patched by early boot code before
- * use.  Because of this, it contains a super-set of the available
+ * use.	 Because of this, it contains a super-set of the available
  * devices and properties.
  */
 / {
@@ -469,12 +469,12 @@
 				cavium,t-we   = <35>;
 				cavium,t-rd-hld = <25>;
 				cavium,t-wr-hld = <35>;
-				cavium,t-pause  = <0>;
-				cavium,t-wait   = <300>;
-				cavium,t-page   = <25>;
+				cavium,t-pause	= <0>;
+				cavium,t-wait	= <300>;
+				cavium,t-page	= <25>;
 				cavium,t-rd-dly = <0>;
 
-				cavium,pages     = <0>;
+				cavium,pages	 = <0>;
 				cavium,bus-width = <8>;
 			};
 			cavium,cs-config@4 {
@@ -486,12 +486,12 @@
 				cavium,t-we   = <320>;
 				cavium,t-rd-hld = <320>;
 				cavium,t-wr-hld = <320>;
-				cavium,t-pause  = <320>;
-				cavium,t-wait   = <320>;
-				cavium,t-page   = <320>;
+				cavium,t-pause	= <320>;
+				cavium,t-wait	= <320>;
+				cavium,t-page	= <320>;
 				cavium,t-rd-dly = <0>;
 
-				cavium,pages     = <0>;
+				cavium,pages	 = <0>;
 				cavium,bus-width = <8>;
 			};
 			cavium,cs-config@5 {
@@ -503,12 +503,12 @@
 				cavium,t-we   = <150>;
 				cavium,t-rd-hld = <100>;
 				cavium,t-wr-hld = <300>;
-				cavium,t-pause  = <0>;
-				cavium,t-wait   = <300>;
-				cavium,t-page   = <310>;
+				cavium,t-pause	= <0>;
+				cavium,t-wait	= <300>;
+				cavium,t-page	= <310>;
 				cavium,t-rd-dly = <0>;
 
-				cavium,pages     = <0>;
+				cavium,pages	 = <0>;
 				cavium,bus-width = <16>;
 			};
 			cavium,cs-config@6 {
@@ -520,12 +520,12 @@
 				cavium,t-we   = <150>;
 				cavium,t-rd-hld = <100>;
 				cavium,t-wr-hld = <30>;
-				cavium,t-pause  = <0>;
-				cavium,t-wait   = <30>;
-				cavium,t-page   = <310>;
+				cavium,t-pause	= <0>;
+				cavium,t-wait	= <30>;
+				cavium,t-page	= <310>;
 				cavium,t-rd-dly = <0>;
 
-				cavium,pages     = <0>;
+				cavium,pages	 = <0>;
 				cavium,wait-mode;
 				cavium,bus-width = <16>;
 			};
diff --git a/arch/mips/cavium-octeon/octeon_boot.h b/arch/mips/cavium-octeon/octeon_boot.h
index 428864b2ba4..7b066bbca86 100644
--- a/arch/mips/cavium-octeon/octeon_boot.h
+++ b/arch/mips/cavium-octeon/octeon_boot.h
@@ -31,7 +31,7 @@ struct boot_init_vector {
 	uint32_t k0_val;
 	/* Address of boot info block structure */
 	uint64_t boot_info_addr;
-	uint32_t flags;         /* flags */
+	uint32_t flags;		/* flags */
 	uint32_t pad;
 };
 
@@ -53,20 +53,20 @@ struct linux_app_boot_info {
 
 /* If not to copy a lot of bootloader's structures
    here is only offset of requested member */
-#define AVAIL_COREMASK_OFFSET_IN_LINUX_APP_BOOT_BLOCK    0x765c
+#define AVAIL_COREMASK_OFFSET_IN_LINUX_APP_BOOT_BLOCK	 0x765c
 
 /* hardcoded in bootloader */
-#define  LABI_ADDR_IN_BOOTLOADER                         0x700
+#define	 LABI_ADDR_IN_BOOTLOADER			 0x700
 
 #define LINUX_APP_BOOT_BLOCK_NAME "linux-app-boot"
 
 #define LABI_SIGNATURE 0xAABBCC01
 
 /*  from uboot-headers/octeon_mem_map.h */
-#define EXCEPTION_BASE_INCR     (4 * 1024)
+#define EXCEPTION_BASE_INCR	(4 * 1024)
 			       /* Increment size for exception base addresses (4k minimum) */
-#define EXCEPTION_BASE_BASE     0
-#define BOOTLOADER_PRIV_DATA_BASE       (EXCEPTION_BASE_BASE + 0x800)
-#define BOOTLOADER_BOOT_VECTOR          (BOOTLOADER_PRIV_DATA_BASE)
+#define EXCEPTION_BASE_BASE	0
+#define BOOTLOADER_PRIV_DATA_BASE	(EXCEPTION_BASE_BASE + 0x800)
+#define BOOTLOADER_BOOT_VECTOR		(BOOTLOADER_PRIV_DATA_BASE)
 
 #endif /* __OCTEON_BOOT_H__ */
diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c
index d7e0a09f77c..c594a3d4f74 100644
--- a/arch/mips/cavium-octeon/setup.c
+++ b/arch/mips/cavium-octeon/setup.c
@@ -319,7 +319,7 @@ EXPORT_SYMBOL(octeon_get_io_clock_rate);
  * exists on most Cavium evaluation boards. If it doesn't exist, then
  * this function doesn't do anything.
  *
- * @s:      String to write
+ * @s:	    String to write
  */
 void octeon_write_lcd(const char *s)
 {
@@ -341,7 +341,7 @@ void octeon_write_lcd(const char *s)
 /**
  * Return the console uart passed by the bootloader
  *
- * Returns uart   (0 or 1)
+ * Returns uart	  (0 or 1)
  */
 int octeon_get_boot_uart(void)
 {
@@ -805,7 +805,7 @@ void __init prom_init(void)
 			/*
 			 * To do: switch parsing to new style, something like:
 			 * parse_crashkernel(arg, sysinfo->system_dram_size,
-			 * 		  &crashk_size, &crashk_base);
+			 *		  &crashk_size, &crashk_base);
 			 */
 #endif
 		} else if (strlen(arcs_cmdline) + strlen(arg) + 1 <
@@ -1013,7 +1013,7 @@ void __init plat_mem_setup(void)
 }
 
 /*
- * Emit one character to the boot UART.  Exported for use by the
+ * Emit one character to the boot UART.	 Exported for use by the
  * watchdog timer.
  */
 int prom_putchar(char c)
diff --git a/arch/mips/cavium-octeon/smp.c b/arch/mips/cavium-octeon/smp.c
index ee1fb9f7f51..295137dfdc3 100644
--- a/arch/mips/cavium-octeon/smp.c
+++ b/arch/mips/cavium-octeon/smp.c
@@ -55,7 +55,7 @@ static irqreturn_t mailbox_interrupt(int irq, void *dev_id)
 
 /**
  * Cause the function described by call_data to be executed on the passed
- * cpu.  When the function has finished, increment the finished field of
+ * cpu.	 When the function has finished, increment the finished field of
  * call_data.
  */
 void octeon_send_ipi_single(int cpu, unsigned int action)
@@ -126,8 +126,8 @@ static void octeon_smp_setup(void)
 
 #ifdef CONFIG_HOTPLUG_CPU
 	/*
-	 * The possible CPUs are all those present on the chip.  We
-	 * will assign CPU numbers for possible cores as well.  Cores
+	 * The possible CPUs are all those present on the chip.	 We
+	 * will assign CPU numbers for possible cores as well.	Cores
 	 * are always consecutively numberd from 0.
 	 */
 	for (id = 0; id < num_cores && id < NR_CPUS; id++) {
@@ -332,7 +332,7 @@ extern void kernel_entry(unsigned long arg1, ...);
 
 static void start_after_reset(void)
 {
-	kernel_entry(0, 0, 0);  /* set a2 = 0 for secondary core */
+	kernel_entry(0, 0, 0);	/* set a2 = 0 for secondary core */
 }
 
 static int octeon_update_boot_vector(unsigned int cpu)
@@ -401,7 +401,7 @@ static int __cpuinit register_cavium_notifier(void)
 }
 late_initcall(register_cavium_notifier);
 
-#endif  /* CONFIG_HOTPLUG_CPU */
+#endif	/* CONFIG_HOTPLUG_CPU */
 
 struct plat_smp_ops octeon_smp_ops = {
 	.send_ipi_single	= octeon_send_ipi_single,