From d7ac0204c65b576978354f3767e8a8f29211424d Mon Sep 17 00:00:00 2001
From: Marcin Chrzanowski <marcin.j.chrzanowski@gmail.com>
Date: Fri, 18 May 2018 14:23:53 +0200
Subject: Define private surface data

---
 char.h         |  1 +
 harddoomdev.c  |  1 +
 pci.c          |  1 +
 pci.h          |  8 --------
 private_data.h | 26 ++++++++++++++++++++++++++
 surface.c      |  1 +
 util.h         |  1 -
 7 files changed, 30 insertions(+), 9 deletions(-)
 create mode 100644 private_data.h

diff --git a/char.h b/char.h
index a708023..63152a1 100644
--- a/char.h
+++ b/char.h
@@ -4,6 +4,7 @@
 #include <linux/pci.h>
 
 #include "pci.h"
+#include "private_data.h"
 
 int new_doomdev(struct pci_dev *dev);
 void destroy_doomdev(struct doom_data *doom_data);
diff --git a/harddoomdev.c b/harddoomdev.c
index f903b10..00ef6f7 100644
--- a/harddoomdev.c
+++ b/harddoomdev.c
@@ -3,6 +3,7 @@
 #include "harddoom.h"
 #include "doomcode.h"
 #include "pci.h"
+#include "private_data.h"
 
 void doomdev_write(void __iomem *iomem, size_t addr, uint32_t data)
 {
diff --git a/pci.c b/pci.c
index 833a72e..e4cfde6 100644
--- a/pci.c
+++ b/pci.c
@@ -7,6 +7,7 @@
 #include "harddoom.h"
 #include "util.h"
 #include "harddoomdev.h"
+#include "private_data.h"
 
 int init_pci(struct pci_dev *dev) {
 	struct doom_data *doom_data;
diff --git a/pci.h b/pci.h
index 9386703..377530e 100644
--- a/pci.h
+++ b/pci.h
@@ -1,14 +1,6 @@
 #ifndef PCI_H
 #define PCI_H
 
-#include <linux/device.h>
-
-struct doom_data {
-	struct cdev *cdev;
-	struct device *device;
-	void __iomem *iomem;
-};
-
 int pci_init(void);
 void pci_cleanup(void);
 
diff --git a/private_data.h b/private_data.h
new file mode 100644
index 0000000..38148bd
--- /dev/null
+++ b/private_data.h
@@ -0,0 +1,26 @@
+#ifndef PRIVATE_DATA_H
+#define PRIVATE_DATA_H
+
+#include <linux/device.h>
+#include <linux/cdev.h>
+
+struct doom_data {
+	struct cdev cdev;
+	struct device *device;
+	struct device *pci_device;
+	void __iomem *iomem;
+};
+
+struct surface_data {
+	struct doom_data *doom_data;
+
+	int surface_size;
+	int pages;
+
+	uint8_t *surface_cpu;
+	uint32_t *page_table_cpu;
+	dma_addr_t surface_dev;
+	dma_addr_t page_table_dev;
+};
+
+#endif
diff --git a/surface.c b/surface.c
index 8400e3f..7dd4793 100644
--- a/surface.c
+++ b/surface.c
@@ -2,6 +2,7 @@
 #include <linux/file.h>
 #include <linux/fs.h>
 
+#include "private_data.h"
 #include "surface.h"
 
 long surface_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
diff --git a/util.h b/util.h
index 7a64462..8c56f67 100644
--- a/util.h
+++ b/util.h
@@ -16,6 +16,5 @@
 		goto label; \
 	} \
 })
-	
 
 #endif
-- 
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