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From bb5a2178ce576f3100ae3679599777d823f459a4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org>
Date: Tue, 16 Nov 2021 10:59:52 +0100
Subject: [PATCH 15/90] PCI: pci-bridge-emul: Rename
PCI_BRIDGE_EMUL_NO_PREFETCHABLE_BAR to PCI_BRIDGE_EMUL_NO_PREFMEM_FORWARD
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This flag describe whether PCI bridge supports forwarding of prefetchable
memory requests in given range between primary and secondary buses. It does
not specify if bridge has support for prefetchable memory BAR (moreover
this pci-bridge-emul.c driver does not provide support for BARs).
So change name of this flag to be less misleading and add comment.
Signed-off-by: Pali Rohár <pali@kernel.org>
---
drivers/pci/controller/pci-mvebu.c | 2 +-
drivers/pci/pci-bridge-emul.c | 2 +-
drivers/pci/pci-bridge-emul.h | 6 +++++-
3 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/pci/controller/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c
index 2ecc1ab12249..2e10ade660a1 100644
--- a/drivers/pci/controller/pci-mvebu.c
+++ b/drivers/pci/controller/pci-mvebu.c
@@ -747,7 +747,7 @@ static int mvebu_pci_bridge_emul_init(struct mvebu_pcie_port *port)
bridge->data = port;
bridge->ops = &mvebu_pci_bridge_emul_ops;
- return pci_bridge_emul_init(bridge, PCI_BRIDGE_EMUL_NO_PREFETCHABLE_BAR);
+ return pci_bridge_emul_init(bridge, PCI_BRIDGE_EMUL_NO_PREFMEM_FORWARD);
}
static inline struct mvebu_pcie *sys_to_pcie(struct pci_sys_data *sys)
diff --git a/drivers/pci/pci-bridge-emul.c b/drivers/pci/pci-bridge-emul.c
index c994ebec2360..ceacba03e714 100644
--- a/drivers/pci/pci-bridge-emul.c
+++ b/drivers/pci/pci-bridge-emul.c
@@ -377,7 +377,7 @@ int pci_bridge_emul_init(struct pci_bridge_emul *bridge,
~(BIT(10) << 16);
}
- if (flags & PCI_BRIDGE_EMUL_NO_PREFETCHABLE_BAR) {
+ if (flags & PCI_BRIDGE_EMUL_NO_PREFMEM_FORWARD) {
bridge->pci_regs_behavior[PCI_PREF_MEMORY_BASE / 4].ro = ~0;
bridge->pci_regs_behavior[PCI_PREF_MEMORY_BASE / 4].rw = 0;
}
diff --git a/drivers/pci/pci-bridge-emul.h b/drivers/pci/pci-bridge-emul.h
index 0690b6369755..087b5fa01bcf 100644
--- a/drivers/pci/pci-bridge-emul.h
+++ b/drivers/pci/pci-bridge-emul.h
@@ -120,7 +120,11 @@ struct pci_bridge_emul {
};
enum {
- PCI_BRIDGE_EMUL_NO_PREFETCHABLE_BAR = BIT(0),
+ /*
+ * PCI bridge does not support forwarding of prefetchable memory
+ * requests between primary and secondary buses.
+ */
+ PCI_BRIDGE_EMUL_NO_PREFMEM_FORWARD = BIT(0),
};
int pci_bridge_emul_init(struct pci_bridge_emul *bridge,
--
2.34.1
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