From c4a42ee9acfb682c713f610efc57766d833931ba Mon Sep 17 00:00:00 2001
From: Rob Herring <robh@kernel.org>
Date: Thu, 20 Aug 2020 21:53:51 -0600
Subject: PCI: dwc: histb: Use pci_ops for root config space accessors
Now that DWC drivers can setup their own pci_ops for the root and child
buses, convert the HiSilicon histb driver to use the standard pci_ops
for root bus config accesses.
Link: https://lore.kernel.org/r/20200821035420.380495-12-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
---
drivers/pci/controller/dwc/pcie-histb.c | 41 ++++++++++++++++++---------------
1 file changed, 23 insertions(+), 18 deletions(-)
(limited to 'drivers/pci/controller/dwc/pcie-histb.c')
diff --git a/drivers/pci/controller/dwc/pcie-histb.c b/drivers/pci/controller/dwc/pcie-histb.c
index 2a2835746077..af1deae2b15d 100644
--- a/drivers/pci/controller/dwc/pcie-histb.c
+++ b/drivers/pci/controller/dwc/pcie-histb.c
@@ -122,32 +122,37 @@ static void histb_pcie_write_dbi(struct dw_pcie *pci, void __iomem *base,
histb_pcie_dbi_w_mode(&pci->pp, false);
}
-static int histb_pcie_rd_own_conf(struct pcie_port *pp, int where,
- int size, u32 *val)
+static int histb_pcie_rd_own_conf(struct pci_bus *bus, unsigned int devfn,
+ int where, int size, u32 *val)
{
- struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
- int ret;
+ struct dw_pcie *pci = to_dw_pcie_from_pp(bus->sysdata);
- histb_pcie_dbi_r_mode(pp, true);
- ret = dw_pcie_read(pci->dbi_base + where, size, val);
- histb_pcie_dbi_r_mode(pp, false);
+ if (PCI_SLOT(devfn)) {
+ *val = ~0;
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ }
- return ret;
+ *val = dw_pcie_read_dbi(pci, where, size);
+ return PCIBIOS_SUCCESSFUL;
}
-static int histb_pcie_wr_own_conf(struct pcie_port *pp, int where,
- int size, u32 val)
+static int histb_pcie_wr_own_conf(struct pci_bus *bus, unsigned int devfn,
+ int where, int size, u32 val)
{
- struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
- int ret;
+ struct dw_pcie *pci = to_dw_pcie_from_pp(bus->sysdata);
- histb_pcie_dbi_w_mode(pp, true);
- ret = dw_pcie_write(pci->dbi_base + where, size, val);
- histb_pcie_dbi_w_mode(pp, false);
+ if (PCI_SLOT(devfn))
+ return PCIBIOS_DEVICE_NOT_FOUND;
- return ret;
+ dw_pcie_write_dbi(pci, where, size, val);
+ return PCIBIOS_SUCCESSFUL;
}
+static struct pci_ops histb_pci_ops = {
+ .read = histb_pcie_rd_own_conf,
+ .write = histb_pcie_wr_own_conf,
+};
+
static int histb_pcie_link_up(struct dw_pcie *pci)
{
struct histb_pcie *hipcie = to_histb_pcie(pci);
@@ -194,6 +199,8 @@ static int histb_pcie_establish_link(struct pcie_port *pp)
static int histb_pcie_host_init(struct pcie_port *pp)
{
+ pp->bridge->ops = &histb_pci_ops;
+
histb_pcie_establish_link(pp);
if (IS_ENABLED(CONFIG_PCI_MSI))
@@ -203,8 +210,6 @@ static int histb_pcie_host_init(struct pcie_port *pp)
}
static const struct dw_pcie_host_ops histb_pcie_host_ops = {
- .rd_own_conf = histb_pcie_rd_own_conf,
- .wr_own_conf = histb_pcie_wr_own_conf,
.host_init = histb_pcie_host_init,
};
--
cgit v1.2.3
From cf627713e3c08920cfc3ad401354109b5273409e Mon Sep 17 00:00:00 2001
From: Rob Herring <robh@kernel.org>
Date: Thu, 20 Aug 2020 21:54:01 -0600
Subject: PCI: dwc: Check CONFIG_PCI_MSI inside dw_pcie_msi_init()
Move the IS_ENABLED(CONFIG_PCI_MSI) check into dw_pcie_msi_init()
instead of duplicating it in all the drivers.
Link: https://lore.kernel.org/r/20200821035420.380495-22-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Richard Zhu <hongxing.zhu@nxp.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: Yue Wang <yue.wang@Amlogic.com>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Jingoo Han <jingoohan1@gmail.com>
Cc: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Cc: Xiaowei Song <songxiaowei@hisilicon.com>
Cc: Binghui Wang <wangbinghui@hisilicon.com>
Cc: Stanimir Varbanov <svarbanov@mm-sol.com>
Cc: Andy Gross <agross@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@axis.com
Cc: linux-arm-msm@vger.kernel.org
---
drivers/pci/controller/dwc/pci-imx6.c | 4 +---
drivers/pci/controller/dwc/pci-meson.c | 8 +-------
drivers/pci/controller/dwc/pcie-artpec6.c | 11 +----------
drivers/pci/controller/dwc/pcie-designware-host.c | 3 +++
drivers/pci/controller/dwc/pcie-designware-plat.c | 4 +---
drivers/pci/controller/dwc/pcie-histb.c | 4 +---
drivers/pci/controller/dwc/pcie-kirin.c | 4 +---
drivers/pci/controller/dwc/pcie-qcom.c | 4 +---
drivers/pci/controller/dwc/pcie-uniphier.c | 3 +--
9 files changed, 11 insertions(+), 34 deletions(-)
(limited to 'drivers/pci/controller/dwc/pcie-histb.c')
diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 90df28c7cb0c..68a09680e728 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -847,9 +847,7 @@ static int imx6_pcie_host_init(struct pcie_port *pp)
imx6_setup_phy_mpll(imx6_pcie);
dw_pcie_setup_rc(pp);
imx6_pcie_establish_link(imx6_pcie);
-
- if (IS_ENABLED(CONFIG_PCI_MSI))
- dw_pcie_msi_init(pp);
+ dw_pcie_msi_init(pp);
return 0;
}
diff --git a/drivers/pci/controller/dwc/pci-meson.c b/drivers/pci/controller/dwc/pci-meson.c
index f4d822190359..67ca73528aad 100644
--- a/drivers/pci/controller/dwc/pci-meson.c
+++ b/drivers/pci/controller/dwc/pci-meson.c
@@ -377,12 +377,6 @@ static int meson_pcie_establish_link(struct meson_pcie *mp)
return dw_pcie_wait_for_link(pci);
}
-static void meson_pcie_enable_interrupts(struct meson_pcie *mp)
-{
- if (IS_ENABLED(CONFIG_PCI_MSI))
- dw_pcie_msi_init(&mp->pci.pp);
-}
-
static int meson_pcie_rd_own_conf(struct pci_bus *bus, u32 devfn,
int where, int size, u32 *val)
{
@@ -466,7 +460,7 @@ static int meson_pcie_host_init(struct pcie_port *pp)
if (ret)
return ret;
- meson_pcie_enable_interrupts(mp);
+ dw_pcie_msi_init(pp);
return 0;
}
diff --git a/drivers/pci/controller/dwc/pcie-artpec6.c b/drivers/pci/controller/dwc/pcie-artpec6.c
index 97d50bb50f06..86f4d66d8587 100644
--- a/drivers/pci/controller/dwc/pcie-artpec6.c
+++ b/drivers/pci/controller/dwc/pcie-artpec6.c
@@ -346,15 +346,6 @@ static void artpec6_pcie_deassert_core_reset(struct artpec6_pcie *artpec6_pcie)
usleep_range(100, 200);
}
-static void artpec6_pcie_enable_interrupts(struct artpec6_pcie *artpec6_pcie)
-{
- struct dw_pcie *pci = artpec6_pcie->pci;
- struct pcie_port *pp = &pci->pp;
-
- if (IS_ENABLED(CONFIG_PCI_MSI))
- dw_pcie_msi_init(pp);
-}
-
static int artpec6_pcie_host_init(struct pcie_port *pp)
{
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
@@ -368,7 +359,7 @@ static int artpec6_pcie_host_init(struct pcie_port *pp)
dw_pcie_setup_rc(pp);
artpec6_pcie_establish_link(pci);
dw_pcie_wait_for_link(pci);
- artpec6_pcie_enable_interrupts(artpec6_pcie);
+ dw_pcie_msi_init(pp);
return 0;
}
diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index 38d7c89dbb21..4f21d95b4077 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -276,6 +276,9 @@ void dw_pcie_msi_init(struct pcie_port *pp)
struct device *dev = pci->dev;
u64 msi_target;
+ if (!IS_ENABLED(CONFIG_PCI_MSI))
+ return;
+
pp->msi_page = alloc_page(GFP_KERNEL);
pp->msi_data = dma_map_page(dev, pp->msi_page, 0, PAGE_SIZE,
DMA_FROM_DEVICE);
diff --git a/drivers/pci/controller/dwc/pcie-designware-plat.c b/drivers/pci/controller/dwc/pcie-designware-plat.c
index 712456f6ce36..e3e300669ed5 100644
--- a/drivers/pci/controller/dwc/pcie-designware-plat.c
+++ b/drivers/pci/controller/dwc/pcie-designware-plat.c
@@ -39,9 +39,7 @@ static int dw_plat_pcie_host_init(struct pcie_port *pp)
dw_pcie_setup_rc(pp);
dw_pcie_wait_for_link(pci);
-
- if (IS_ENABLED(CONFIG_PCI_MSI))
- dw_pcie_msi_init(pp);
+ dw_pcie_msi_init(pp);
return 0;
}
diff --git a/drivers/pci/controller/dwc/pcie-histb.c b/drivers/pci/controller/dwc/pcie-histb.c
index af1deae2b15d..afc1abbe49aa 100644
--- a/drivers/pci/controller/dwc/pcie-histb.c
+++ b/drivers/pci/controller/dwc/pcie-histb.c
@@ -202,9 +202,7 @@ static int histb_pcie_host_init(struct pcie_port *pp)
pp->bridge->ops = &histb_pci_ops;
histb_pcie_establish_link(pp);
-
- if (IS_ENABLED(CONFIG_PCI_MSI))
- dw_pcie_msi_init(pp);
+ dw_pcie_msi_init(pp);
return 0;
}
diff --git a/drivers/pci/controller/dwc/pcie-kirin.c b/drivers/pci/controller/dwc/pcie-kirin.c
index 8a01ab0a4a65..6f01ae013326 100644
--- a/drivers/pci/controller/dwc/pcie-kirin.c
+++ b/drivers/pci/controller/dwc/pcie-kirin.c
@@ -429,9 +429,7 @@ static int kirin_pcie_host_init(struct pcie_port *pp)
pp->bridge->ops = &kirin_pci_ops;
kirin_pcie_establish_link(pp);
-
- if (IS_ENABLED(CONFIG_PCI_MSI))
- dw_pcie_msi_init(pp);
+ dw_pcie_msi_init(pp);
return 0;
}
diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index 3aac77a295ba..fe7fc2ccd76d 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -1280,9 +1280,7 @@ static int qcom_pcie_host_init(struct pcie_port *pp)
}
dw_pcie_setup_rc(pp);
-
- if (IS_ENABLED(CONFIG_PCI_MSI))
- dw_pcie_msi_init(pp);
+ dw_pcie_msi_init(pp);
qcom_ep_reset_deassert(pcie);
diff --git a/drivers/pci/controller/dwc/pcie-uniphier.c b/drivers/pci/controller/dwc/pcie-uniphier.c
index 3a7f403b57b8..48176265c867 100644
--- a/drivers/pci/controller/dwc/pcie-uniphier.c
+++ b/drivers/pci/controller/dwc/pcie-uniphier.c
@@ -322,8 +322,7 @@ static int uniphier_pcie_host_init(struct pcie_port *pp)
if (ret)
return ret;
- if (IS_ENABLED(CONFIG_PCI_MSI))
- dw_pcie_msi_init(pp);
+ dw_pcie_msi_init(pp);
return 0;
}
--
cgit v1.2.3