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path: root/drivers/misc/cxl/vphb.c
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Diffstat (limited to 'drivers/misc/cxl/vphb.c')
-rw-r--r--drivers/misc/cxl/vphb.c46
1 files changed, 29 insertions, 17 deletions
diff --git a/drivers/misc/cxl/vphb.c b/drivers/misc/cxl/vphb.c
index 7fd0bdc1436a..7908633d9204 100644
--- a/drivers/misc/cxl/vphb.c
+++ b/drivers/misc/cxl/vphb.c
@@ -9,7 +9,6 @@
#include <linux/pci.h>
#include <misc/cxl.h>
-#include <asm/pnv-pci.h>
#include "cxl.h"
static int cxl_dma_set_mask(struct pci_dev *pdev, u64 dma_mask)
@@ -45,6 +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;
@@ -57,7 +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,
@@ -191,8 +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,
@@ -284,18 +307,13 @@ void cxl_pci_vphb_remove(struct cxl_afu *afu)
*/
}
-static bool _cxl_pci_is_vphb_device(struct pci_controller *phb)
-{
- return (phb->ops == &cxl_pcie_pci_ops);
-}
-
bool cxl_pci_is_vphb_device(struct pci_dev *dev)
{
struct pci_controller *phb;
phb = pci_bus_to_host(dev->bus);
- return _cxl_pci_is_vphb_device(phb);
+ return (phb->ops == &cxl_pcie_pci_ops);
}
struct cxl_afu *cxl_pci_to_afu(struct pci_dev *dev)
@@ -304,13 +322,7 @@ struct cxl_afu *cxl_pci_to_afu(struct pci_dev *dev)
phb = pci_bus_to_host(dev->bus);
- if (_cxl_pci_is_vphb_device(phb))
- return (struct cxl_afu *)phb->private_data;
-
- if (pnv_pci_on_cxl_phb(dev))
- return pnv_cxl_phb_to_afu(phb);
-
- return ERR_PTR(-ENODEV);
+ return (struct cxl_afu *)phb->private_data;
}
EXPORT_SYMBOL_GPL(cxl_pci_to_afu);