linux-kernel - [PATCH v2 07/17] cxl: Add new header for call backs and structs

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Message-Id: <1412073306-13812-8-git-send-email-mikey@neuling.org>
Date:	Tue, 30 Sep 2014 20:34:56 +1000
From:	Michael Neuling <mikey@...ling.org>
To:	greg@...ah.com, arnd@...db.de, mpe@...erman.id.au,
	benh@...nel.crashing.org
Cc:	mikey@...ling.org, anton@...ba.org, linux-kernel@...r.kernel.org,
	linuxppc-dev@...abs.org, jk@...abs.org, imunsie@...ibm.com,
	cbe-oss-dev@...ts.ozlabs.org,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Subject: [PATCH v2 07/17] cxl: Add new header for call backs and structs

From: Ian Munsie <imunsie@....ibm.com>

This new header add defines for callbacks and structs needed by the rest of the
kernel to hook into the cxl infrastructure.

Empty functions are provided when CONFIG CXL_BASE is not enabled.

Signed-off-by: Ian Munsie <imunsie@....ibm.com>
Signed-off-by: Michael Neuling <mikey@...ling.org>
---
 include/misc/cxl.h | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 include/misc/cxl.h

diff --git a/include/misc/cxl.h b/include/misc/cxl.h
new file mode 100644
index 0000000..bde46a3
--- /dev/null
+++ b/include/misc/cxl.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2014 IBM Corp.
+ *
+ * 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
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _MISC_ASM_CXL_H
+#define _MISC_ASM_CXL_H
+
+#define CXL_IRQ_RANGES 4
+
+struct cxl_irq_ranges {
+	irq_hw_number_t offset[CXL_IRQ_RANGES];
+	irq_hw_number_t range[CXL_IRQ_RANGES];
+};
+
+#ifdef CONFIG_CXL_BASE
+
+void cxl_slbia(struct mm_struct *mm);
+void cxl_ctx_get(void);
+void cxl_ctx_put(void);
+bool cxl_ctx_in_use(void);
+
+#else /* CONFIG_CXL_BASE */
+
+#define cxl_slbia(...) do { } while (0)
+#define cxl_ctx_in_use(...) false
+
+#endif /* CONFIG_CXL_BASE */
+
+#endif
-- 
1.9.1

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