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authorLinus Torvalds <torvalds@linux-foundation.org>2014-10-11 20:34:00 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-11 20:34:00 -0400
commitfd9879b9bb3258ebc27a4cc6d2d29f528f71901f (patch)
tree48b68994f5e8083aafe116533e8143cb2bf30c85 /include
parent81ae31d78239318610d7c2acb3e2610d622a5aa4 (diff)
parentd53ba6b3bba33432cc37b7101a86f8f3392c46e7 (diff)
downloadlinux-fd9879b9bb3258ebc27a4cc6d2d29f528f71901f.tar.bz2
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux
Pull powerpc updates from Michael Ellerman: "Here's a first pull request for powerpc updates for 3.18. The bulk of the additions are for the "cxl" driver, for IBM's Coherent Accelerator Processor Interface (CAPI). Most of it's in drivers/misc, which Greg & Arnd maintain, Greg said he was happy for us to take it through our tree. There's the usual minor cleanups and fixes, including a bit of noise in drivers from some of those. A bunch of updates to our EEH code, which has been getting more testing. Several nice speedups from Anton, including 20% in clear_page(). And a bunch of updates for freescale from Scott" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (130 commits) cxl: Fix afu_read() not doing finish_wait() on signal or non-blocking cxl: Add documentation for userspace APIs cxl: Add driver to Kbuild and Makefiles cxl: Add userspace header file cxl: Driver code for powernv PCIe based cards for userspace access cxl: Add base builtin support powerpc/mm: Add hooks for cxl powerpc/opal: Add PHB to cxl mode call powerpc/mm: Add new hash_page_mm() powerpc/powerpc: Add new PCIe functions for allocating cxl interrupts cxl: Add new header for call backs and structs powerpc/powernv: Split out set MSI IRQ chip code powerpc/mm: Export mmu_kernel_ssize and mmu_linear_psize powerpc/msi: Improve IRQ bitmap allocator powerpc/cell: Make spu_flush_all_slbs() generic powerpc/cell: Move data segment faulting code out of cell platform powerpc/cell: Move spu_handle_mm_fault() out of cell platform powerpc/pseries: Use new defines when calling H_SET_MODE powerpc: Update contact info in Documentation files powerpc/perf/hv-24x7: Simplify catalog_read() ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/fsl_ifc.h6
-rw-r--r--include/misc/cxl.h48
-rw-r--r--include/uapi/Kbuild1
-rw-r--r--include/uapi/misc/Kbuild2
-rw-r--r--include/uapi/misc/cxl.h88
5 files changed, 142 insertions, 3 deletions
diff --git a/include/linux/fsl_ifc.h b/include/linux/fsl_ifc.h
index f49ddb1b2273..84d60cb841b1 100644
--- a/include/linux/fsl_ifc.h
+++ b/include/linux/fsl_ifc.h
@@ -781,13 +781,13 @@ struct fsl_ifc_regs {
__be32 amask;
u32 res4[0x2];
} amask_cs[FSL_IFC_BANK_COUNT];
- u32 res5[0x17];
+ u32 res5[0x18];
struct {
- __be32 csor_ext;
__be32 csor;
+ __be32 csor_ext;
u32 res6;
} csor_cs[FSL_IFC_BANK_COUNT];
- u32 res7[0x19];
+ u32 res7[0x18];
struct {
__be32 ftim[4];
u32 res8[0x8];
diff --git a/include/misc/cxl.h b/include/misc/cxl.h
new file mode 100644
index 000000000000..975cc7861f18
--- /dev/null
+++ b/include/misc/cxl.h
@@ -0,0 +1,48 @@
+/*
+ * 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_CXL_H
+#define _MISC_CXL_H
+
+#ifdef CONFIG_CXL_BASE
+
+#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];
+};
+
+extern atomic_t cxl_use_count;
+
+static inline bool cxl_ctx_in_use(void)
+{
+ return (atomic_read(&cxl_use_count) != 0);
+}
+
+static inline void cxl_ctx_get(void)
+{
+ atomic_inc(&cxl_use_count);
+}
+
+static inline void cxl_ctx_put(void)
+{
+ atomic_dec(&cxl_use_count);
+}
+
+void cxl_slbia(struct mm_struct *mm);
+
+#else /* CONFIG_CXL_BASE */
+
+static inline bool cxl_ctx_in_use(void) { return false; }
+static inline void cxl_slbia(struct mm_struct *mm) {}
+
+#endif /* CONFIG_CXL_BASE */
+
+#endif
diff --git a/include/uapi/Kbuild b/include/uapi/Kbuild
index 81d2106287fe..245aa6e05e6a 100644
--- a/include/uapi/Kbuild
+++ b/include/uapi/Kbuild
@@ -12,3 +12,4 @@ header-y += video/
header-y += drm/
header-y += xen/
header-y += scsi/
+header-y += misc/
diff --git a/include/uapi/misc/Kbuild b/include/uapi/misc/Kbuild
new file mode 100644
index 000000000000..e96cae7d58c9
--- /dev/null
+++ b/include/uapi/misc/Kbuild
@@ -0,0 +1,2 @@
+# misc Header export list
+header-y += cxl.h
diff --git a/include/uapi/misc/cxl.h b/include/uapi/misc/cxl.h
new file mode 100644
index 000000000000..cd6d789b73ec
--- /dev/null
+++ b/include/uapi/misc/cxl.h
@@ -0,0 +1,88 @@
+/*
+ * 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 _UAPI_MISC_CXL_H
+#define _UAPI_MISC_CXL_H
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+
+struct cxl_ioctl_start_work {
+ __u64 flags;
+ __u64 work_element_descriptor;
+ __u64 amr;
+ __s16 num_interrupts;
+ __s16 reserved1;
+ __s32 reserved2;
+ __u64 reserved3;
+ __u64 reserved4;
+ __u64 reserved5;
+ __u64 reserved6;
+};
+
+#define CXL_START_WORK_AMR 0x0000000000000001ULL
+#define CXL_START_WORK_NUM_IRQS 0x0000000000000002ULL
+#define CXL_START_WORK_ALL (CXL_START_WORK_AMR |\
+ CXL_START_WORK_NUM_IRQS)
+
+/* ioctl numbers */
+#define CXL_MAGIC 0xCA
+#define CXL_IOCTL_START_WORK _IOW(CXL_MAGIC, 0x00, struct cxl_ioctl_start_work)
+#define CXL_IOCTL_GET_PROCESS_ELEMENT _IOR(CXL_MAGIC, 0x01, __u32)
+
+#define CXL_READ_MIN_SIZE 0x1000 /* 4K */
+
+/* Events from read() */
+enum cxl_event_type {
+ CXL_EVENT_RESERVED = 0,
+ CXL_EVENT_AFU_INTERRUPT = 1,
+ CXL_EVENT_DATA_STORAGE = 2,
+ CXL_EVENT_AFU_ERROR = 3,
+};
+
+struct cxl_event_header {
+ __u16 type;
+ __u16 size;
+ __u16 process_element;
+ __u16 reserved1;
+};
+
+struct cxl_event_afu_interrupt {
+ __u16 flags;
+ __u16 irq; /* Raised AFU interrupt number */
+ __u32 reserved1;
+};
+
+struct cxl_event_data_storage {
+ __u16 flags;
+ __u16 reserved1;
+ __u32 reserved2;
+ __u64 addr;
+ __u64 dsisr;
+ __u64 reserved3;
+};
+
+struct cxl_event_afu_error {
+ __u16 flags;
+ __u16 reserved1;
+ __u32 reserved2;
+ __u64 error;
+};
+
+struct cxl_event {
+ struct cxl_event_header header;
+ union {
+ struct cxl_event_afu_interrupt irq;
+ struct cxl_event_data_storage fault;
+ struct cxl_event_afu_error afu_error;
+ };
+};
+
+#endif /* _UAPI_MISC_CXL_H */