Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932398AbcCHBuL (ORCPT ); Mon, 7 Mar 2016 20:50:11 -0500 Received: from e23smtp09.au.ibm.com ([202.81.31.142]:51626 "EHLO e23smtp09.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932368AbcCHBt7 (ORCPT ); Mon, 7 Mar 2016 20:49:59 -0500 X-IBM-Helo: d23dlp01.au.ibm.com X-IBM-MailFrom: imunsie@au1.ibm.com X-IBM-RcptTo: linux-kernel@vger.kernel.org From: "Ian Munsie" To: Michael Ellerman , linux-kernel , Matt Ochs , Manoj Kumar Cc: Michael Neuling , linuxppc-dev , Ian Munsie Subject: [PATCH v3 2/2] cxl: add set/get private data to context struct Date: Tue, 8 Mar 2016 12:48:35 +1100 Message-Id: <1457401715-26435-2-git-send-email-imunsie@au.ibm.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1457401715-26435-1-git-send-email-imunsie@au.ibm.com> References: <1457401715-26435-1-git-send-email-imunsie@au.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16030801-0033-0000-0000-0000031C6EEB Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2507 Lines: 85 From: Michael Neuling This provides AFU drivers a means to associate private data with a cxl context. This is particularly intended for make the new callbacks for driver specific events easier for AFU drivers to use, as they can easily get back to any private data structures they may use. Signed-off-by: Michael Neuling Signed-off-by: Ian Munsie Reviewed-by: Matthew R. Ochs --- No changes since v1, added Matt Ochs reviewed-by tag. drivers/misc/cxl/api.c | 21 +++++++++++++++++++++ drivers/misc/cxl/cxl.h | 3 +++ include/misc/cxl.h | 7 +++++++ 3 files changed, 31 insertions(+) diff --git a/drivers/misc/cxl/api.c b/drivers/misc/cxl/api.c index eebc9c3..93b270c 100644 --- a/drivers/misc/cxl/api.c +++ b/drivers/misc/cxl/api.c @@ -91,6 +91,27 @@ int cxl_release_context(struct cxl_context *ctx) } EXPORT_SYMBOL_GPL(cxl_release_context); + +int cxl_set_priv(struct cxl_context *ctx, void *priv) +{ + if (!ctx) + return -EINVAL; + + ctx->priv = priv; + + return 0; +} +EXPORT_SYMBOL_GPL(cxl_set_priv); + +void *cxl_get_priv(struct cxl_context *ctx) +{ + if (!ctx) + return ERR_PTR(-EINVAL); + + return ctx->priv; +} +EXPORT_SYMBOL_GPL(cxl_get_priv); + int cxl_allocate_afu_irqs(struct cxl_context *ctx, int num) { if (num == 0) diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h index 64e8e0a..71f66e7 100644 --- a/drivers/misc/cxl/cxl.h +++ b/drivers/misc/cxl/cxl.h @@ -454,6 +454,9 @@ struct cxl_context { /* Only used in PR mode */ u64 process_token; + /* driver private data */ + void *priv; + unsigned long *irq_bitmap; /* Accessed from IRQ context */ struct cxl_irq_ranges irqs; struct list_head irq_names; diff --git a/include/misc/cxl.h b/include/misc/cxl.h index 01d66a3..76c08cb 100644 --- a/include/misc/cxl.h +++ b/include/misc/cxl.h @@ -89,6 +89,13 @@ struct cxl_context *cxl_dev_context_init(struct pci_dev *dev); int cxl_release_context(struct cxl_context *ctx); /* + * Set and get private data associated with a context. Allows drivers to have a + * back pointer to some useful structure. + */ +int cxl_set_priv(struct cxl_context *ctx, void *priv); +void *cxl_get_priv(struct cxl_context *ctx); + +/* * Allocate AFU interrupts for this context. num=0 will allocate the default * for this AFU as given in the AFU descriptor. This number doesn't include the * interrupt 0 (CAIA defines AFU IRQ 0 for page faults). Each interrupt to be -- 2.1.4