From 40c61a3b927ce31e05a6eb0d7b36e09e67c6ca97 Mon Sep 17 00:00:00 2001
From: "Suren A. Chilingaryan" <csa@dside.dyndns.org>
Date: Mon, 11 Jul 2011 03:48:13 +0200
Subject: Wait for the completion of DMA operations during writes

---
 irq.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 irq.c

(limited to 'irq.c')

diff --git a/irq.c b/irq.c
new file mode 100644
index 0000000..0154511
--- /dev/null
+++ b/irq.c
@@ -0,0 +1,55 @@
+#include <stdio.h>
+#include <string.h>
+#include <strings.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdarg.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <arpa/inet.h>
+#include <errno.h>
+#include <assert.h>
+
+#include "pci.h"
+
+#include "tools.h"
+#include "error.h"
+
+int pcilib_wait_irq(pcilib_t *ctx, pcilib_irq_source_t source, size_t timeout, size_t *count) {
+    int err;
+    
+    interrupt_wait_t arg = { 0 };
+    
+    arg.source = source;
+    arg.timeout = timeout;
+
+    if (count) arg.count = 1;
+
+    err = ioctl(ctx->handle, PCIDRIVER_IOC_WAITI, &arg);
+    if (err) {
+	pcilib_error("PCIDRIVER_IOC_WAITI ioctl have failed");
+	return PCILIB_ERROR_FAILED;
+    }
+    
+    if (!arg.count) return PCILIB_ERROR_TIMEOUT;
+
+    if (count) *count = arg.count;
+    
+    return 0;
+}
+
+int pcilib_clear_irq(pcilib_t *ctx, pcilib_irq_source_t source) {
+    int err;
+    
+    err = ioctl(ctx->handle, PCIDRIVER_IOC_CLEAR_IOQ, source);
+    if (err) {
+	pcilib_error("PCIDRIVER_IOC_CLEAR_IOQ ioctl have failed");
+	return PCILIB_ERROR_FAILED;
+    }
+    
+    return 0;
+}
+
+
-- 
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