From: Alan Cox <alan@linux.intel.com>
Date: Sun, 25 Nov 2018 18:41:33 +0000 (+0000)
Subject: zxdiv: Add graphic ioctls and fix swapmap_add misuse
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=b5500fd3e766e6db046d724cc03bd7c4ba83aca9;p=FUZIX.git

zxdiv: Add graphic ioctls and fix swapmap_add misuse
---

diff --git a/Kernel/platform-zxdiv/devices.c b/Kernel/platform-zxdiv/devices.c
index de6f9cae..90c608d1 100644
--- a/Kernel/platform-zxdiv/devices.c
+++ b/Kernel/platform-zxdiv/devices.c
@@ -7,6 +7,7 @@
 #include <devide.h>
 #include <devsd.h>
 #include <blkdev.h>
+#include <devtty.h>
 
 struct devsw dev_tab[] =  /* The device driver switch table */
 {
@@ -15,7 +16,7 @@ struct devsw dev_tab[] =  /* The device driver switch table */
   /* 1: /dev/fd	Floppy disc block devices: nope */
   {  no_open,      no_close,     no_rdwr,  no_rdwr,   no_ioctl },
   /* 2: /dev/tty	TTY devices */
-  {  tty_open,	   tty_close,    tty_read,      tty_write,     vt_ioctl },
+  {  tty_open,	   tty_close,    tty_read,      tty_write,     gfx_ioctl },
   /* 3: /dev/lpr	Printer devices */
   {  no_open,      no_close,     no_rdwr,       no_rdwr,       no_ioctl  },
   /* 4: /dev/mem etc	System devices (one offs) */
diff --git a/Kernel/platform-zxdiv/devtty.c b/Kernel/platform-zxdiv/devtty.c
index 14e57cc6..bce0705a 100644
--- a/Kernel/platform-zxdiv/devtty.c
+++ b/Kernel/platform-zxdiv/devtty.c
@@ -6,6 +6,7 @@
 #include <keycode.h>
 #include <vt.h>
 #include <tty.h>
+#include <graphics.h>
 
 char tbuf1[TTYSIZ];
 
@@ -202,3 +203,53 @@ static void keydecode(void)
 
 /* This is used by the vt asm code, but needs to live in the kernel */
 uint16_t cursorpos;
+
+static struct display specdisplay = {
+	0,
+	256, 192,
+	256, 192,
+	0xFF, 0xFF,
+	FMT_SPECTRUM,
+	HW_UNACCEL,
+	GFX_VBLANK|GFX_MAPPABLE|GFX_TEXT,
+	0
+};
+
+static struct videomap specmap = {
+	0,
+	0,
+	0x4000,
+	6912,
+	0,
+	0,
+	0,
+	MAP_FBMEM|MAP_FBMEM_SIMPLE
+};
+
+/*
+ *	Graphics ioctls. Very minimal for this platform. It's a single fixed
+ *	mode with direct memory mapping.
+ */
+int gfx_ioctl(uint8_t minor, uarg_t arg, char *ptr)
+{
+	if (minor != 1 || arg >> 8 != 0x03)
+		return vt_ioctl(minor, arg, ptr);
+	switch(arg) {
+	case GFXIOC_GETINFO:
+		return uput(&specdisplay, ptr, sizeof(struct display));
+	case GFXIOC_MAP:
+		return uput(&specmap, ptr, sizeof(struct videomap));
+	case GFXIOC_UNMAP:
+		return 0;
+	case GFXIOC_WAITVB:
+		/* Our system clock is vblank */
+		psleep(&timer_interrupt);
+		chksigs();
+		if (udata.u_cursig) {
+			udata.u_error = EINTR;
+			return -1;
+		}
+		return 0;
+	}
+	return -1;
+}
diff --git a/Kernel/platform-zxdiv/devtty.h b/Kernel/platform-zxdiv/devtty.h
index 039589fd..49ea085b 100644
--- a/Kernel/platform-zxdiv/devtty.h
+++ b/Kernel/platform-zxdiv/devtty.h
@@ -10,4 +10,6 @@ extern uint8_t keymap[8];
 extern uint8_t keyboard[8][5];
 extern uint8_t shiftkeyboard[8][5];
 
+extern int gfx_ioctl(uint8_t minor, uarg_t arg, char *ptr);
+
 #endif
diff --git a/Kernel/platform-zxdiv/discard.c b/Kernel/platform-zxdiv/discard.c
index a3f30999..d9d930e6 100644
--- a/Kernel/platform-zxdiv/discard.c
+++ b/Kernel/platform-zxdiv/discard.c
@@ -43,6 +43,6 @@ void platform_swap_found(uint8_t letter, uint8_t m)
 		n = MAX_SWAPS;
 #ifdef SWAPDEV
 	while (n)
-		swapmap_add(n--);
+		swapmap_init(n--);
 #endif
 }
diff --git a/Kernel/platform-zxdiv/main.c b/Kernel/platform-zxdiv/main.c
index 20a2ccee..e2529e66 100644
--- a/Kernel/platform-zxdiv/main.c
+++ b/Kernel/platform-zxdiv/main.c
@@ -21,6 +21,7 @@ void platform_interrupt(void)
 {
  tty_pollirq();
  timer_interrupt();
+ wakeup(&timer_interrupt);
 }
 
 /*