From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Wed, 30 Aug 2017 08:25:59 +0000
Subject: Initial file dump from open source release

---
 lib/lzo/lzo1x_hw_compress.c | 238 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 238 insertions(+)
 create mode 100755 lib/lzo/lzo1x_hw_compress.c

(limited to 'lib/lzo/lzo1x_hw_compress.c')

diff --git a/lib/lzo/lzo1x_hw_compress.c b/lib/lzo/lzo1x_hw_compress.c
new file mode 100755
index 00000000..346ba437
--- /dev/null
+++ b/lib/lzo/lzo1x_hw_compress.c
@@ -0,0 +1,238 @@
+/******************************************************************************
+ ** File Name:                                                                *
+ ** Author:                                                                   *
+ ** DATE:                                                   		      *
+ ** Copyright:       Spreatrum, Incoporated. All Rights Reserved.             *
+ ** Description:                                                              *
+ ******************************************************************************
+
+ ******************************************************************************
+ **                        Edit History                                       *
+ ** ------------------------------------------------------------------------- *
+ ** DATE           NAME             DESCRIPTION                               *
+ **                                                                           *
+ ******************************************************************************/
+
+/**---------------------------------------------------------------------------*
+ **                         Dependencies                                      *
+ **--------------------------------------------------------------------------- */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/lzo.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/poll.h>
+#include <linux/sched.h>
+#ifndef CONFIG_64BIT
+#include <mach/arch_misc.h>
+#endif
+
+#include <linux/highmem.h>
+#include <linux/vmalloc.h>
+#include <asm/page.h>
+#include <asm/cacheflush.h>
+#include <asm/io.h>
+
+#include "sprd_zipenc_drv.h"
+//#include "lzodefs_hw.h"
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/atomic.h>
+//macro
+
+DEFINE_SPINLOCK(zipenc_lock);
+
+u32 lzo1x_virt_to_phys(u32 virt_addr)
+{
+	u32 phy_addr;
+	struct page *page;
+	if((unsigned long)virt_addr<PAGE_OFFSET){
+		printk("%s: virtual addr is error\n",__func__);
+		return (-1UL);
+	}
+	if(virt_addr_valid(virt_addr)){
+		phy_addr=virt_to_phys(virt_addr);
+	}
+	else if(is_vmalloc_or_module_addr(virt_addr)){
+		page =vmalloc_to_page(virt_addr);
+		phy_addr =(page)? page_to_phys(page): (-1UL);
+	}
+	else{
+		page = kmap_atomic_to_page(virt_addr);
+		phy_addr =(page)? page_to_phys(page): (-1UL);
+	}
+	return phy_addr;
+}
+
+static int _lzo1x_1_hw_compress(u32 src_addr , u32 src_num , u32 dst_addr , u32 *dst_len)
+{
+
+	u32 len,ol_sts;
+	u32 phy_src_addr,phy_dst_addr;
+
+	*dst_len=0;
+
+	phy_src_addr = lzo1x_virt_to_phys(src_addr);
+	phy_dst_addr = lzo1x_virt_to_phys(dst_addr);
+
+	if((phy_src_addr==(-1UL))||(phy_dst_addr==(-1UL)))
+	{
+		printk("lzo1x phy addr errors \n");
+		return LZO_OTHER_ERROR;
+	}
+
+	spin_lock(&zipenc_lock);
+	ZipEnc_SetSrcCfg(phy_src_addr ,  ZIP_WORK_LENGTH);
+	ZipEnc_SetDestCfg(phy_dst_addr , ZIP_WORK_LENGTH);
+
+	//dmac_flush_range(src_addr,src_addr+ZIP_WORK_LENGTH);
+	//dmac_flush_range(dst_addr,dst_addr+ZIP_WORK_LENGTH);
+
+	ZipEnc_Run();
+	spin_unlock(&zipenc_lock);
+
+	if(Zip_Enc_Wait_Pool(ZIPENC_DONE_INT))
+	{
+		printk("zip enc error\n");
+		return LZO_HW_ERROR;
+	}
+
+	ol_sts=ZipEnc_Get_Ol_Sts();
+	if(ol_sts)
+	{
+		return LZO_HW_OUT_LEN_ERROR;
+	}
+	else
+	{
+		len=ZipEnc_Get_Comp_Len();
+		if(len >= ZIP_WORK_LENGTH )
+		{
+			return LZO_HW_OUT_LEN_ERROR;
+		}
+	}
+	*dst_len = len;
+	return 0;
+}
+
+int lzo1x_1_compress_hw(const unsigned char *src , size_t src_len , unsigned char *dst , size_t *dst_len , void *wrkmen)
+{
+	volatile u32 enc_len;
+	volatile int ret;
+
+	u32 src_addr =(u32)src;
+	u32 dst_addr =(u32)dst;
+
+	if (!dst || !dst_len || !src  || (src_len!=PAGE_SIZE))
+	{
+		printk("zip compress input parameter error \n");
+		return LZO_HW_IN_PARA_ERROR;
+	}
+	//printk("lzo hw compress \r\n");
+	if(ret=_lzo1x_1_hw_compress((u32)src_addr ,src_len , dst_addr ,&enc_len))
+	{
+		//printk("lzo compress error ret:%d\n",ret);
+		if(ret== LZO_HW_OUT_LEN_ERROR)
+		return ret;
+
+		ZipEnc_Restart();
+
+		*dst_len=enc_len;
+		if(ret==LZO_HW_ERROR)
+		return LZO_HW_ERROR;
+		else
+		return LZO_OTHER_ERROR;
+	}
+
+	*dst_len=enc_len;
+	return LZO_HW_OK;
+}
+
+#ifndef CONFIG_64BIT
+int lzo1x_1_compress_hw(const unsigned char *src , size_t src_len , unsigned char *dst , size_t *dst_len , void *wrkmen)
+{
+	return ZipEnc_compress(src,src_len,dst,dst_len,wrkmen);
+}
+
+unsigned int get_zip_type(void)
+{
+	static unsigned int lzo_algo_type = 0;
+	static int  read_chip_cnt = 0;
+	int chip_id;
+	if(!read_chip_cnt)
+	{
+		read_chip_cnt = 1;
+		chip_id = sci_get_chip_id();
+		if((chip_id==0x7715a000)||(chip_id==0x7715a001)||(chip_id==0x8815a000))
+		{
+			lzo_algo_type = 1;
+		}
+		printk("lzo zip type %d is %s zip\r\n",lzo_algo_type, lzo_algo_type ? "sw" : "hw");
+	}
+	return lzo_algo_type;
+}
+
+static int __init ZipEnc_Init(void)
+{
+	int ret;
+
+	printk("%s\r\n", __func__);
+
+	ZipEnc_Enable();
+	//ZipEnc_Reset();
+
+	CHIP_REG_OR(ZIPENC_CTRL , ZIPENC_EN);
+
+	ZipEnc_In_Swt(zipenc_param.in_switch_mode);
+	ZipEnc_Out_Swt(zipenc_param.out_switch_mode);
+
+	ZipEnc_LengthLimitMode();
+
+	ZipEnc_InQueue_Clr();
+	ZipEnc_OutQueue_Clr();
+
+	if(zipenc_param.wait_mode == ZIPENC_WAIT_INT)
+	{
+		ZipEnc_RegCallback(ZIPENC_DONE_INT,ZipEnc_Callback_Done);
+		ZipEnc_RegCallback(ZIPENC_TIMEOUT_INT,ZipEnc_Callback_Timeout);
+		ZipEnc_IntEn(ZIPENC_DONE_INT);
+		ZipEnc_IntEn(ZIPENC_TIMEOUT_INT);
+		ret = request_irq( zipenc_param.int_num, ZipEnc_IsrHandler,0,"zip enc",NULL);
+		if(ret)
+		{
+			printk("zip enc request irq error\n");
+			return -1;
+		}
+	}
+	
+	Zip_Enc_Wait = ((zipenc_param.wait_mode==ZIPENC_WAIT_INT)? (Zip_Enc_Wait_Int) : (Zip_Enc_Wait_Pool));
+	ZipEnc_compress = get_zip_type() ?  lzo1x_1_compress : _lzo1x_1_compress_hw;
+	return 0;
+}
+
+static void ZipEnc_DeInit(void)
+{
+	ZipEnc_Disable();
+	if(zipenc_param.work_mode==ZIPENC_QUEUE)
+	{
+		ZipEnc_InQueue_Clr();
+		ZipEnc_OutQueue_Clr();
+	}
+
+	if(zipenc_param.wait_mode==ZIPENC_WAIT_INT)
+	{
+		ZipEnc_IntDisable(ZIPENC_DONE_INT);
+		ZipEnc_UNRegCallback(ZIPENC_DONE_INT);
+
+		ZipEnc_UNRegCallback(ZIPENC_TIMEOUT_INT);
+		free_irq(zipenc_param.int_num,NULL);
+	}
+}
+
+module_init(ZipEnc_Init);
+module_exit(ZipEnc_DeInit);
+
+EXPORT_SYMBOL_GPL(lzo1x_1_compress_hw);
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("LZO1X-1 HW Compressor");
+#endif
-- 
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