From: "Christian König" <ckoenig.leichtzumerken@gmail.com>
To: bhelgaas@google.com, linux-pci@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] PCI: cleanup PCI_REBAR_CTRL_BAR_SHIFT handling
Date: Thu, 14 Jun 2018 14:21:46 +0200 [thread overview]
Message-ID: <20180614122146.62118-2-christian.koenig@amd.com> (raw)
In-Reply-To: <20180614122146.62118-1-christian.koenig@amd.com>
That was hard coded instead of properly defined in the header for some
reason.
Signed-off-by: Christian König <christian.koenig@amd.com>
---
drivers/pci/pci.c | 6 +++---
include/uapi/linux/pci_regs.h | 3 ++-
2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index d4685090378b..a905e35d9360 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1181,7 +1181,7 @@ static void pci_restore_rebar_state(struct pci_dev *pdev)
res = pdev->resource + bar_idx;
size = order_base_2((resource_size(res) >> 20) | 1) - 1;
ctrl &= ~PCI_REBAR_CTRL_BAR_SIZE;
- ctrl |= size << 8;
+ ctrl |= size << PCI_REBAR_CTRL_BAR_SHIFT;
pci_write_config_dword(pdev, pos + PCI_REBAR_CTRL, ctrl);
}
}
@@ -3066,7 +3066,7 @@ int pci_rebar_get_current_size(struct pci_dev *pdev, int bar)
return pos;
pci_read_config_dword(pdev, pos + PCI_REBAR_CTRL, &ctrl);
- return (ctrl & PCI_REBAR_CTRL_BAR_SIZE) >> 8;
+ return (ctrl & PCI_REBAR_CTRL_BAR_SIZE) >> PCI_REBAR_CTRL_BAR_SHIFT;
}
/**
@@ -3089,7 +3089,7 @@ int pci_rebar_set_size(struct pci_dev *pdev, int bar, int size)
pci_read_config_dword(pdev, pos + PCI_REBAR_CTRL, &ctrl);
ctrl &= ~PCI_REBAR_CTRL_BAR_SIZE;
- ctrl |= size << 8;
+ ctrl |= size << PCI_REBAR_CTRL_BAR_SHIFT;
pci_write_config_dword(pdev, pos + PCI_REBAR_CTRL, ctrl);
return 0;
}
diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
index 0c79eac5e9b8..7358ad00f5dd 100644
--- a/include/uapi/linux/pci_regs.h
+++ b/include/uapi/linux/pci_regs.h
@@ -950,8 +950,9 @@
#define PCI_REBAR_CTRL 8 /* control register */
#define PCI_REBAR_CTRL_BAR_IDX 0x00000007 /* BAR index */
#define PCI_REBAR_CTRL_NBAR_MASK 0x000000E0 /* # of resizable BARs */
-#define PCI_REBAR_CTRL_NBAR_SHIFT 5 /* shift for # of BARs */
+#define PCI_REBAR_CTRL_NBAR_SHIFT 5 /* shift for # of BARs */
#define PCI_REBAR_CTRL_BAR_SIZE 0x00001F00 /* BAR size */
+#define PCI_REBAR_CTRL_BAR_SHIFT 8 /* shift for BAR size */
/* Dynamic Power Allocation */
#define PCI_DPA_CAP 4 /* capability register */
--
2.14.1
next prev parent reply other threads:[~2018-06-14 12:22 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-14 12:21 [PATCH 1/2] PCI: fix restoring resized BAR state on resume Christian König
2018-06-14 12:21 ` Christian König [this message]
2018-06-28 18:27 ` Bjorn Helgaas
2018-06-30 0:57 ` Bjorn Helgaas
2018-07-02 13:20 ` Christian König
2018-07-02 13:49 ` Bjorn Helgaas
2018-07-03 7:07 ` Christian König
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