Merge testing branch 'cache'

src/drivers/elphel/Makefile

@@ -14,6 +14,7 @@ obj-$(CONFIG_ELPHEL393)           += clock10359.o
 #fpgajtag-y := fpgajtag353.o x393.o 
 #obj-$(CONFIG_ELPHEL393_EXTERNAL)  += fpgajtag.o
 
+obj-$(CONFIG_ELPHEL393)           += x393_helpers.o
 obj-$(CONFIG_ELPHEL393)           += framepars.o
 obj-$(CONFIG_ELPHEL393)           += sensor_common.o x393.o
 obj-$(CONFIG_ELPHEL393)           += quantization_tables.o

src/drivers/elphel/circbuf.c

@@ -69,7 +69,8 @@
 #include "circbuf.h"
 #include "exif.h"
 #include "x393_macro.h"
-#include "x393.h"
+//#include "x393.h"
+#include "x393_helpers.h"
 
 #define CIRCBUF_DRIVER_NAME "circbuf driver"
 
@@ -184,8 +185,8 @@ loff_t circbuf_all_lseek(struct file *file, loff_t offset, int orig)
 		return  circbuf_lseek(file, offset, orig);
 	case JPEGHEAD_MINOR:
 		if (orig == SEEK_END && offset > 0) {
-			rp = BYTE2DW(offset) & (~7); // convert to index to long, align to 32-bytes
-			fp = (struct interframe_params_t *) &circbuf_priv[chn].buf_ptr[X393_BUFFSUB(rp, 8)];
+			rp = BYTE2DW(X393_BUFFSUB(offset, CHUNK_SIZE)) & (~7); // convert to index to long, align to 32-bytes
+			fp = (struct interframe_params_t *) &circbuf_priv[chn].buf_ptr[rp];
 		}
 		return  jpeghead_lseek(file, offset, orig, fp);
 	case HUFFMAN_MINOR:
@@ -416,6 +417,8 @@ inline int get_image_start(int last_chunk_offset, unsigned int len32)
  *                   free memory may be less by a whole frame if compressor is running.
  *  LSEEK_CIRC_USED - returns memory used in the in circbuf from the current file pointer,
  *                   or -EINVAL if the pointer is invalid
+ * The following command is used for profiling from user space applications. It does not change file pointer:
+ *  LSEEK_CIRC_UTIME  return current value of microsecond counter.
  *  @param[in]   file   pointer to \e file structure
  *  @param[in]   offset offset inside buffer in bytes
  *  @param[in]   orig   origin
@@ -656,6 +659,9 @@ loff_t circbuf_lseek(struct file *file, loff_t offset, int orig)
 				}
 				if (fvld < 0) return -ESPIPE;      // invalid seek - have better code?
 				return file->f_pos ; // data already available, return file pointer
+			case LSEEK_CIRC_UTIME:
+				return get_rtc_usec();
+				break;
 			default:
 				if ((offset & ~0x1f)==LSEEK_DAEMON_CIRCBUF) {
 					wait_event_interruptible(circbuf_wait_queue, get_imageParamsThis(P_DAEMON_EN) & (1<<(offset & 0x1f)));
@@ -686,6 +692,8 @@ loff_t circbuf_lseek(struct file *file, loff_t offset, int orig)
  * @return      number of bytes read form \e buf
  */
 unsigned short circbuf_quality = 100;
+unsigned short circbuf_height = 1936;
+unsigned short circbuf_width = 2592;
 ssize_t circbuf_write(struct file *file, const char *buf, size_t count, loff_t *off)
 {
 	unsigned long p;
@@ -740,6 +748,17 @@ ssize_t circbuf_write(struct file *file, const char *buf, size_t count, loff_t *
 			}
 		}
 		break;
+	case 6:
+		{
+		unsigned int w, h;
+		int res = sscanf(&buf[2], "%u:%u", &w, &h);
+		if (res == 2) {
+			circbuf_width = w;
+			circbuf_height = h;
+			dev_dbg(g_dev_ptr, "set image size %u x %u\n", w, h);
+		}
+		}
+		break;
 	}
 	/* debug code end */
 
@@ -804,6 +823,17 @@ int circbuf_mmap(struct file *file, struct vm_area_struct *vma)
 			vma->vm_end - vma->vm_start,
 			vma->vm_page_prot);
 
+//	ret = dma_common_mmap(g_dev_ptr, vma,
+//			circbuf_priv[chn].buf_ptr,
+//			circbuf_priv[chn].phys_addr,
+//			pElphel_buf->size * PAGE_SIZE);
+//
+//	ret = arm_dma_mmap(g_dev_ptr, vma,
+//			circbuf_priv[chn].buf_ptr,
+//			circbuf_priv[chn].phys_addr,
+//			pElphel_buf->size * PAGE_SIZE,
+//			NULL);
+
 	dev_dbg(g_dev_ptr, "remap_pfn_range returned 0x%x\n", ret);
 	if (ret) return -EAGAIN;
 

src/drivers/elphel/circbuf.h

@@ -44,6 +44,8 @@ extern struct circbuf_priv_t *circbuf_priv_ptr;
 
 /* debug code follows */
 extern unsigned short circbuf_quality;
+extern unsigned short circbuf_height;
+extern unsigned short circbuf_width;
 /* end of debug code */
 
 #endif /* _CIRCBUF_H */

src/drivers/elphel/elphel393-mem.c

@@ -37,6 +37,8 @@
 #include <asm/outercache.h>
 #include <asm/cacheflush.h>
 #include <elphel/elphel393-mem.h>
+#include "x393_helpers.h"
+
 #define SYSFS_PERMISSIONS         0644 /* default permissions for sysfs files */
 #define SYSFS_READONLY            0444
 #define SYSFS_WRITEONLY           0222
@@ -311,6 +313,47 @@ static ssize_t sync_for_device_bidir(struct device *dev, struct device_attribute
     return count;
 }
 
+static ssize_t flush_cpu_cache(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+	const int buff_size = 0x1000000;
+	const int buff_start_offset = 0x100000;
+	unsigned int chn;
+	int start_offset, end_offset;
+	int num_items;
+	dma_addr_t phys_addr_start, phys_addr_end;
+	u32 start_time, end_time;
+
+	num_items = sscanf(buf, "%u:%d:%d", &chn, &start_offset, &end_offset);
+	start_time = get_rtc_usec();
+	if (num_items == 3) {
+		// invalidate L2 caches
+		if (end_offset > start_offset) {
+			// handle single buffer case
+			phys_addr_start = _elphel_buf.paddr + buff_start_offset + chn * buff_size + start_offset;
+			phys_addr_end = _elphel_buf.paddr + buff_start_offset + chn * buff_size + end_offset - 1;
+			outer_inv_range(phys_addr_start, phys_addr_end);
+		} else {
+			// handle split buffer case when pointer rolls over the end
+			// first, process the peace at the end of the buffer
+			phys_addr_start = _elphel_buf.paddr + buff_start_offset + chn * buff_size + start_offset;
+			phys_addr_end = _elphel_buf.paddr + buff_start_offset + ++chn * buff_size - 1;
+			outer_inv_range(phys_addr_start, phys_addr_end);
+
+			// second, process the peace at the start of the buffer
+			phys_addr_start = _elphel_buf.paddr + buff_start_offset + chn * buff_size;
+			phys_addr_end = _elphel_buf.paddr + buff_start_offset + chn * buff_size + end_offset - 1;
+			outer_inv_range(phys_addr_start, phys_addr_end);
+		}
+	}
+	end_time = get_rtc_usec();
+	if (start_time == 0 && end_time == 0) {
+		pr_info("Unable to get usec values\n");
+	} else {
+		pr_info("Cache invalidate time: %lu\n", end_time - start_time);
+	}
+	return count;
+}
+
 static ssize_t get_sync_for_device_h2d(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	return sprintf(buf,"Write address/length pair into this file to hand this region of the host to device DMA buffer to device (after CPU writes).\n");
@@ -335,6 +378,11 @@ static ssize_t get_sync_for_cpu_bidir(struct device *dev, struct device_attribut
 {
 	return sprintf(buf,"Write address/length pair into this file to hand this region of the bidirectional DMA buffer to CPU (before CPU reads).\n");
 }
+static ssize_t get_flush_cpu_cache(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	return sprintf(buf, "Write command and address into this file to flush CPU caches. Format 'chn:start_offset:end_offset' where "
+			"'chn' is sensor channel, 'start_offset' and 'end_offset' are start and end data offsets in circbuf\n");
+}
 
 static DEVICE_ATTR(buffer_address,        SYSFS_PERMISSIONS & SYSFS_READONLY,     get_paddr,                 NULL);
 static DEVICE_ATTR(buffer_pages,          SYSFS_PERMISSIONS & SYSFS_READONLY,     get_size,                  NULL);
@@ -351,6 +399,7 @@ static DEVICE_ATTR(sync_for_cpu_d2h,      SYSFS_PERMISSIONS,
 static DEVICE_ATTR(sync_for_device_d2h,   SYSFS_PERMISSIONS,                      get_sync_for_device_d2h,   sync_for_device_d2h);
 static DEVICE_ATTR(sync_for_cpu_bidir,    SYSFS_PERMISSIONS,                      get_sync_for_cpu_bidir,    sync_for_cpu_bidir);
 static DEVICE_ATTR(sync_for_device_bidir, SYSFS_PERMISSIONS,                      get_sync_for_device_bidir, sync_for_device_bidir);
+static DEVICE_ATTR(flush_cpu_cache,       SYSFS_PERMISSIONS,                      get_flush_cpu_cache,       flush_cpu_cache);
 
 static struct attribute *root_dev_attrs[] = {
 		&dev_attr_buffer_address.attr,
@@ -368,6 +417,7 @@ static struct attribute *root_dev_attrs[] = {
 		&dev_attr_sync_for_device_d2h.attr,
 		&dev_attr_sync_for_cpu_bidir.attr,
 		&dev_attr_sync_for_device_bidir.attr,
+		&dev_attr_flush_cpu_cache.attr,
 		NULL
 };
 

src/drivers/elphel/x393_helpers.c

+/** @file x393_helpers.c
+ *
+ * @brief Helper functions for various routines form x393.h which require several actions to get
+ * reliable result.
+ */
+
+/* Copyright (C) 2016 Elphel, Inc
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stddef.h>
+#include "x393_helpers.h"
+
+/**
+ * @brief Read RTC microsecond counter.
+ * @return Current value of microsecond counter or 0 in case read sequence was
+ * not successful.
+ */
+u32 get_rtc_usec(void)
+{
+	x393_rtc_status_t stat;
+	x393_status_ctrl_t stat_ctrl;
+	x393_rtc_usec_t   usec;
+	unsigned int i;
+
+	stat = x393_rtc_status();
+	stat_ctrl.d32 = 0;
+	stat_ctrl.mode = 1;
+	stat_ctrl.seq_num = stat.seq_num + 1;
+	set_x393_rtc_set_status(stat_ctrl);
+	for (i = 0; i < REPEAT_READ; i++) {
+		stat = x393_rtc_status();
+		if (stat.seq_num == stat_ctrl.seq_num) {
+			usec = x393_rtc_status_usec();
+			return usec.usec;
+		}
+	}
+	return 0;
+}

src/drivers/elphel/x393_helpers.h

+/** @file x393_helpers.h
+ *
+ * @brief Helper functions for various routines form x393.h which require several actions to get
+ * reliable result.
+ */
+
+/* Copyright (C) 2016 Elphel, Inc
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _X393_HELPERS_H
+#define _X393_HELPERS_H
+
+#include <asm/types.h>
+#include "x393.h"
+
+/** @brief Number of times to repeat register read sequence while waiting for
+ * sequence number specified.
+ */
+#define REPEAT_READ               10
+
+u32 get_rtc_usec(void);
+
+#endif /* _X393_HELPERS_H */

src/include/elphel/c313a.h

@@ -1362,6 +1362,7 @@ struct p_names_t {
 #define      LSEEK_CIRC_FREE        12
 #define      LSEEK_CIRC_USED        13
 #define      LSEEK_CIRC_STOP_COMPRESSOR 14
+#define      LSEEK_CIRC_UTIME       15
 
 #define      LSEEK_HUFFMAN_DC0      1
 #define      LSEEK_HUFFMAN_AC0      2