[PATCH v2 09/10] Revert "cxl: Allow a default context to be associated with an external pci_dev"
Frederic Barrat
fbarrat at linux.ibm.com
Thu Jun 28 20:05:08 AEST 2018
Remove abandonned capi support for the Mellanox CX4.
This reverts commit a19bd79e31769626d288cc016e21a31b6f47bf6f.
Signed-off-by: Frederic Barrat <fbarrat at linux.ibm.com>
---
drivers/misc/cxl/Makefile | 2 +-
drivers/misc/cxl/base.c | 35 -------------------------------
drivers/misc/cxl/cxl.h | 6 ------
drivers/misc/cxl/main.c | 2 --
drivers/misc/cxl/phb.c | 44 ---------------------------------------
drivers/misc/cxl/vphb.c | 30 +++++++++++++++++++++++---
include/misc/cxl-base.h | 6 ------
7 files changed, 28 insertions(+), 97 deletions(-)
delete mode 100644 drivers/misc/cxl/phb.c
diff --git a/drivers/misc/cxl/Makefile b/drivers/misc/cxl/Makefile
index 502d41fc9ea5..5eea61b9584f 100644
--- a/drivers/misc/cxl/Makefile
+++ b/drivers/misc/cxl/Makefile
@@ -4,7 +4,7 @@ ccflags-$(CONFIG_PPC_WERROR) += -Werror
cxl-y += main.o file.o irq.o fault.o native.o
cxl-y += context.o sysfs.o pci.o trace.o
-cxl-y += vphb.o phb.o api.o cxllib.o
+cxl-y += vphb.o api.o cxllib.o
cxl-$(CONFIG_PPC_PSERIES) += flash.o guest.o of.o hcalls.o
cxl-$(CONFIG_DEBUG_FS) += debugfs.o
obj-$(CONFIG_CXL) += cxl.o
diff --git a/drivers/misc/cxl/base.c b/drivers/misc/cxl/base.c
index e1e80cb99ad9..7557835cdfcd 100644
--- a/drivers/misc/cxl/base.c
+++ b/drivers/misc/cxl/base.c
@@ -106,41 +106,6 @@ int cxl_update_properties(struct device_node *dn,
}
EXPORT_SYMBOL_GPL(cxl_update_properties);
-/*
- * API calls into the driver that may be called from the PHB code and must be
- * built in.
- */
-bool cxl_pci_associate_default_context(struct pci_dev *dev, struct cxl_afu *afu)
-{
- bool ret;
- struct cxl_calls *calls;
-
- calls = cxl_calls_get();
- if (!calls)
- return false;
-
- ret = calls->cxl_pci_associate_default_context(dev, afu);
-
- cxl_calls_put(calls);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(cxl_pci_associate_default_context);
-
-void cxl_pci_disable_device(struct pci_dev *dev)
-{
- struct cxl_calls *calls;
-
- calls = cxl_calls_get();
- if (!calls)
- return;
-
- calls->cxl_pci_disable_device(dev);
-
- cxl_calls_put(calls);
-}
-EXPORT_SYMBOL_GPL(cxl_pci_disable_device);
-
static int __init cxl_base_init(void)
{
struct device_node *np;
diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h
index d95c2c98f2ab..aa453448201d 100644
--- a/drivers/misc/cxl/cxl.h
+++ b/drivers/misc/cxl/cxl.h
@@ -867,15 +867,9 @@ static inline bool cxl_is_power9_dd1(void)
ssize_t cxl_pci_afu_read_err_buffer(struct cxl_afu *afu, char *buf,
loff_t off, size_t count);
-/* Internal functions wrapped in cxl_base to allow PHB to call them */
-bool _cxl_pci_associate_default_context(struct pci_dev *dev, struct cxl_afu *afu);
-void _cxl_pci_disable_device(struct pci_dev *dev);
struct cxl_calls {
void (*cxl_slbia)(struct mm_struct *mm);
- bool (*cxl_pci_associate_default_context)(struct pci_dev *dev, struct cxl_afu *afu);
- void (*cxl_pci_disable_device)(struct pci_dev *dev);
-
struct module *owner;
};
int register_cxl_calls(struct cxl_calls *calls);
diff --git a/drivers/misc/cxl/main.c b/drivers/misc/cxl/main.c
index a7e83624034b..334223b802ee 100644
--- a/drivers/misc/cxl/main.c
+++ b/drivers/misc/cxl/main.c
@@ -104,8 +104,6 @@ static inline void cxl_slbia_core(struct mm_struct *mm)
static struct cxl_calls cxl_calls = {
.cxl_slbia = cxl_slbia_core,
- .cxl_pci_associate_default_context = _cxl_pci_associate_default_context,
- .cxl_pci_disable_device = _cxl_pci_disable_device,
.owner = THIS_MODULE,
};
diff --git a/drivers/misc/cxl/phb.c b/drivers/misc/cxl/phb.c
deleted file mode 100644
index 6ec69ada19f4..000000000000
--- a/drivers/misc/cxl/phb.c
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * Copyright 2014-2016 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.
- */
-
-#include <linux/pci.h>
-#include "cxl.h"
-
-bool _cxl_pci_associate_default_context(struct pci_dev *dev, struct cxl_afu *afu)
-{
- struct cxl_context *ctx;
-
- /*
- * Allocate a context to do cxl things to. This is used for interrupts
- * in the peer model using a real phb, and if we eventually do DMA ops
- * in the virtual phb, we'll need a default context to attach them to.
- */
- ctx = cxl_dev_context_init(dev);
- if (IS_ERR(ctx))
- return false;
- dev->dev.archdata.cxl_ctx = ctx;
-
- return (cxl_ops->afu_check_and_enable(afu) == 0);
-}
-/* exported via cxl_base */
-
-void _cxl_pci_disable_device(struct pci_dev *dev)
-{
- struct cxl_context *ctx = cxl_get_context(dev);
-
- if (ctx) {
- if (ctx->status == STARTED) {
- dev_err(&dev->dev, "Default context started\n");
- return;
- }
- dev->dev.archdata.cxl_ctx = NULL;
- cxl_release_context(ctx);
- }
-}
-/* exported via cxl_base */
diff --git a/drivers/misc/cxl/vphb.c b/drivers/misc/cxl/vphb.c
index 1a99c9c7a6fb..7908633d9204 100644
--- a/drivers/misc/cxl/vphb.c
+++ b/drivers/misc/cxl/vphb.c
@@ -44,6 +44,7 @@ static bool cxl_pci_enable_device_hook(struct pci_dev *dev)
{
struct pci_controller *phb;
struct cxl_afu *afu;
+ struct cxl_context *ctx;
phb = pci_bus_to_host(dev->bus);
afu = (struct cxl_afu *)phb->private_data;
@@ -56,7 +57,30 @@ static bool cxl_pci_enable_device_hook(struct pci_dev *dev)
set_dma_ops(&dev->dev, &dma_nommu_ops);
set_dma_offset(&dev->dev, PAGE_OFFSET);
- return _cxl_pci_associate_default_context(dev, afu);
+ /*
+ * Allocate a context to do cxl things too. If we eventually do real
+ * DMA ops, we'll need a default context to attach them to
+ */
+ ctx = cxl_dev_context_init(dev);
+ if (IS_ERR(ctx))
+ return false;
+ dev->dev.archdata.cxl_ctx = ctx;
+
+ return (cxl_ops->afu_check_and_enable(afu) == 0);
+}
+
+static void cxl_pci_disable_device(struct pci_dev *dev)
+{
+ struct cxl_context *ctx = cxl_get_context(dev);
+
+ if (ctx) {
+ if (ctx->status == STARTED) {
+ dev_err(&dev->dev, "Default context started\n");
+ return;
+ }
+ dev->dev.archdata.cxl_ctx = NULL;
+ cxl_release_context(ctx);
+ }
}
static resource_size_t cxl_pci_window_alignment(struct pci_bus *bus,
@@ -190,8 +214,8 @@ static struct pci_controller_ops cxl_pci_controller_ops =
{
.probe_mode = cxl_pci_probe_mode,
.enable_device_hook = cxl_pci_enable_device_hook,
- .disable_device = _cxl_pci_disable_device,
- .release_device = _cxl_pci_disable_device,
+ .disable_device = cxl_pci_disable_device,
+ .release_device = cxl_pci_disable_device,
.window_alignment = cxl_pci_window_alignment,
.reset_secondary_bus = cxl_pci_reset_secondary_bus,
.setup_msi_irqs = cxl_setup_msi_irqs,
diff --git a/include/misc/cxl-base.h b/include/misc/cxl-base.h
index bb7e629ae492..f53808fa638a 100644
--- a/include/misc/cxl-base.h
+++ b/include/misc/cxl-base.h
@@ -10,8 +10,6 @@
#ifndef _MISC_CXL_BASE_H
#define _MISC_CXL_BASE_H
-#include <misc/cxl.h>
-
#ifdef CONFIG_CXL_BASE
#define CXL_IRQ_RANGES 4
@@ -41,8 +39,6 @@ static inline void cxl_ctx_put(void)
struct cxl_afu *cxl_afu_get(struct cxl_afu *afu);
void cxl_afu_put(struct cxl_afu *afu);
void cxl_slbia(struct mm_struct *mm);
-bool cxl_pci_associate_default_context(struct pci_dev *dev, struct cxl_afu *afu);
-void cxl_pci_disable_device(struct pci_dev *dev);
#else /* CONFIG_CXL_BASE */
@@ -50,8 +46,6 @@ static inline bool cxl_ctx_in_use(void) { return false; }
static inline struct cxl_afu *cxl_afu_get(struct cxl_afu *afu) { return NULL; }
static inline void cxl_afu_put(struct cxl_afu *afu) {}
static inline void cxl_slbia(struct mm_struct *mm) {}
-static inline bool cxl_pci_associate_default_context(struct pci_dev *dev, struct cxl_afu *afu) { return false; }
-static inline void cxl_pci_disable_device(struct pci_dev *dev) {}
#endif /* CONFIG_CXL_BASE */
--
2.17.1
More information about the Linuxppc-dev
mailing list