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Date: Fri, 12 Aug 2011 12:30:47 +0200
From: Manohar Vanga <manohar.vanga@...n.ch>
To: <martyn.welch@...com>
CC: <gregkh@...e.de>, <cota@...ap.org>, <devel@...verdev.osuosl.org>,
<linux-kernel@...r.kernel.org>,
Manohar Vanga <manohar.vanga@...n.ch>
Subject: [PATCH 1/5] staging: vme: make [alloc|free]_consistent bridge specific
Make PCI dependent functions ([alloc|free]_consistent() in
'vme.c') bridge specific. By removing the dependency of the
VME bridge framework on PCI, this patch allows for addition of
non-PCI based VME bridges.
Signed-off-by: Manohar Vanga <manohar.vanga@...n.ch>
---
drivers/staging/vme/bridges/vme_ca91cx42.c | 24 ++++++++++++++++++
drivers/staging/vme/bridges/vme_tsi148.c | 24 ++++++++++++++++++
drivers/staging/vme/vme.c | 36 ++++++++++++++++-----------
drivers/staging/vme/vme_bridge.h | 10 +++++--
4 files changed, 76 insertions(+), 18 deletions(-)
diff --git a/drivers/staging/vme/bridges/vme_ca91cx42.c b/drivers/staging/vme/bridges/vme_ca91cx42.c
index 5122c13..0e4feac 100644
--- a/drivers/staging/vme/bridges/vme_ca91cx42.c
+++ b/drivers/staging/vme/bridges/vme_ca91cx42.c
@@ -1500,6 +1500,28 @@ static int ca91cx42_slot_get(struct vme_bridge *ca91cx42_bridge)
}
+void *ca91cx42_alloc_consistent(struct device *parent, size_t size,
+ dma_addr_t *dma)
+{
+ struct pci_dev *pdev;
+
+ /* Find pci_dev container of dev */
+ pdev = container_of(parent, struct pci_dev, dev);
+
+ return pci_alloc_consistent(pdev, size, dma);
+}
+
+void ca91cx42_free_consistent(struct device *parent, size_t size, void *vaddr,
+ dma_addr_t dma)
+{
+ struct pci_dev *pdev;
+
+ /* Find pci_dev container of dev */
+ pdev = container_of(parent, struct pci_dev, dev);
+
+ pci_free_consistent(pdev, size, vaddr, dma);
+}
+
static int __init ca91cx42_init(void)
{
return pci_register_driver(&ca91cx42_driver);
@@ -1769,6 +1791,8 @@ static int ca91cx42_probe(struct pci_dev *pdev, const struct pci_device_id *id)
ca91cx42_bridge->lm_attach = ca91cx42_lm_attach;
ca91cx42_bridge->lm_detach = ca91cx42_lm_detach;
ca91cx42_bridge->slot_get = ca91cx42_slot_get;
+ ca91cx42_bridge->alloc_consistent = ca91cx42_alloc_consistent;
+ ca91cx42_bridge->free_consistent = ca91cx42_free_consistent;
data = ioread32(ca91cx42_device->base + MISC_CTL);
dev_info(&pdev->dev, "Board is%s the VME system controller\n",
diff --git a/drivers/staging/vme/bridges/vme_tsi148.c b/drivers/staging/vme/bridges/vme_tsi148.c
index 9c53951..6c1167c 100644
--- a/drivers/staging/vme/bridges/vme_tsi148.c
+++ b/drivers/staging/vme/bridges/vme_tsi148.c
@@ -2114,6 +2114,28 @@ static int tsi148_slot_get(struct vme_bridge *tsi148_bridge)
return (int)slot;
}
+void *tsi148_alloc_consistent(struct device *parent, size_t size,
+ dma_addr_t *dma)
+{
+ struct pci_dev *pdev;
+
+ /* Find pci_dev container of dev */
+ pdev = container_of(parent, struct pci_dev, dev);
+
+ return pci_alloc_consistent(pdev, size, dma);
+}
+
+void tsi148_free_consistent(struct device *parent, size_t size, void *vaddr,
+ dma_addr_t dma)
+{
+ struct pci_dev *pdev;
+
+ /* Find pci_dev container of dev */
+ pdev = container_of(parent, struct pci_dev, dev);
+
+ pci_free_consistent(pdev, size, vaddr, dma);
+}
+
static int __init tsi148_init(void)
{
return pci_register_driver(&tsi148_driver);
@@ -2443,6 +2465,8 @@ static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id)
tsi148_bridge->lm_attach = tsi148_lm_attach;
tsi148_bridge->lm_detach = tsi148_lm_detach;
tsi148_bridge->slot_get = tsi148_slot_get;
+ tsi148_bridge->alloc_consistent = tsi148_alloc_consistent;
+ tsi148_bridge->free_consistent = tsi148_free_consistent;
data = ioread32be(tsi148_device->base + TSI148_LCSR_VSTAT);
dev_info(&pdev->dev, "Board is%s the VME system controller\n",
diff --git a/drivers/staging/vme/vme.c b/drivers/staging/vme/vme.c
index c078ce3..d243a4a 100644
--- a/drivers/staging/vme/vme.c
+++ b/drivers/staging/vme/vme.c
@@ -83,15 +83,11 @@ static struct vme_bridge *find_bridge(struct vme_resource *resource)
/*
* Allocate a contiguous block of memory for use by the driver. This is used to
* create the buffers for the slave windows.
- *
- * XXX VME bridges could be available on buses other than PCI. At the momment
- * this framework only supports PCI devices.
*/
void *vme_alloc_consistent(struct vme_resource *resource, size_t size,
dma_addr_t *dma)
{
struct vme_bridge *bridge;
- struct pci_dev *pdev;
if (resource == NULL) {
printk(KERN_ERR "No resource\n");
@@ -104,28 +100,29 @@ void *vme_alloc_consistent(struct vme_resource *resource, size_t size,
return NULL;
}
- /* Find pci_dev container of dev */
if (bridge->parent == NULL) {
- printk(KERN_ERR "Dev entry NULL\n");
+ printk(KERN_ERR "Dev entry NULL for bridge %s\n",
+ bridge->name);
+ return NULL;
+ }
+
+ if (bridge->alloc_consistent == NULL) {
+ pr_err("alloc_consistent not supported by bridge %s\n",
+ bridge->name);
return NULL;
}
- pdev = container_of(bridge->parent, struct pci_dev, dev);
- return pci_alloc_consistent(pdev, size, dma);
+ return bridge->alloc_consistent(bridge->parent, size, dma);
}
EXPORT_SYMBOL(vme_alloc_consistent);
/*
* Free previously allocated contiguous block of memory.
- *
- * XXX VME bridges could be available on buses other than PCI. At the momment
- * this framework only supports PCI devices.
*/
void vme_free_consistent(struct vme_resource *resource, size_t size,
void *vaddr, dma_addr_t dma)
{
struct vme_bridge *bridge;
- struct pci_dev *pdev;
if (resource == NULL) {
printk(KERN_ERR "No resource\n");
@@ -138,10 +135,19 @@ void vme_free_consistent(struct vme_resource *resource, size_t size,
return;
}
- /* Find pci_dev container of dev */
- pdev = container_of(bridge->parent, struct pci_dev, dev);
+ if (bridge->parent == NULL) {
+ printk(KERN_ERR "Dev entry NULL for bridge %s\n",
+ bridge->name);
+ return;
+ }
+
+ if (bridge->free_consistent == NULL) {
+ pr_err("free_consistent not supported by bridge %s\n",
+ bridge->name);
+ return;
+ }
- pci_free_consistent(pdev, size, vaddr, dma);
+ bridge->free_consistent(bridge->parent, size, vaddr, dma);
}
EXPORT_SYMBOL(vme_free_consistent);
diff --git a/drivers/staging/vme/vme_bridge.h b/drivers/staging/vme/vme_bridge.h
index 4c6ec31..a9084f0 100644
--- a/drivers/staging/vme/vme_bridge.h
+++ b/drivers/staging/vme/vme_bridge.h
@@ -98,8 +98,6 @@ struct vme_irq {
/* This structure stores all the information about one bridge
* The structure should be dynamically allocated by the driver and one instance
* of the structure should be present for each VME chip present in the system.
- *
- * Currently we assume that all chips are PCI-based
*/
struct vme_bridge {
char name[VMENAMSIZ];
@@ -112,7 +110,7 @@ struct vme_bridge {
struct list_head vme_errors; /* List for errors generated on VME */
/* Bridge Info - XXX Move to private structure? */
- struct device *parent; /* Generic device struct (pdev->dev for PCI) */
+ struct device *parent; /* Parent device (eg. pdev->dev for PCI) */
void *driver_priv; /* Private pointer for the bridge driver */
struct device dev[VME_SLOTS_MAX]; /* Device registered with
@@ -165,6 +163,12 @@ struct vme_bridge {
/* CR/CSR space functions */
int (*slot_get) (struct vme_bridge *);
+
+ /* Bridge parent interface */
+ void *(*alloc_consistent)(struct device *dev, size_t size,
+ dma_addr_t *dma);
+ void (*free_consistent)(struct device *dev, size_t size,
+ void *vaddr, dma_addr_t dma);
};
void vme_irq_handler(struct vme_bridge *, int, int);
--
1.7.4.1
--
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