From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e06smtp05.uk.ibm.com (e06smtp05.uk.ibm.com [195.75.94.101]) (using TLSv1.2 with cipher CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3rCyzN6pQBzDqMb for ; Mon, 23 May 2016 22:49:20 +1000 (AEST) Received: from localhost by e06smtp05.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 23 May 2016 13:49:17 +0100 From: Philippe Bergheaud To: linuxppc-dev@lists.ozlabs.org Cc: mrochs@linux.vnet.ibm.com, manoj@linux.vnet.ibm.com, mpe@ellerman.id.au, imunsie@au1.ibm.com, mikey@neuling.org, Philippe Bergheaud Subject: [v4,2/2] cxl: Add set and get private data to context struct Date: Mon, 23 May 2016 14:49:02 +0200 Message-Id: <1464007742-1941-2-git-send-email-felix@linux.vnet.ibm.com> In-Reply-To: <1464007742-1941-1-git-send-email-felix@linux.vnet.ibm.com> References: <1464007742-1941-1-git-send-email-felix@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 Signed-off-by: Philippe Bergheaud --- 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 71673cb..efeaa6e 100644 --- a/drivers/misc/cxl/api.c +++ b/drivers/misc/cxl/api.c @@ -94,6 +94,27 @@ static irq_hw_number_t cxl_find_afu_irq(struct cxl_context *ctx, int num) return 0; } + +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) { int res; diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h index b0027e6..1e56304 100644 --- a/drivers/misc/cxl/cxl.h +++ b/drivers/misc/cxl/cxl.h @@ -478,6 +478,9 @@ 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 ef3115e..667f99d 100644 --- a/include/misc/cxl.h +++ b/include/misc/cxl.h @@ -86,6 +86,13 @@ 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 -- 2.1.0