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Message-ID: <20201009163747.64b1de4a@xhacker.debian>
Date: Fri, 9 Oct 2020 16:37:47 +0800
From: Jisheng Zhang <Jisheng.Zhang@...aptics.com>
To: Vidya Sagar <vidyas@...dia.com>
Cc: Kishon Vijay Abraham I <kishon@...com>,
Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
Rob Herring <robh@...nel.org>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Jingoo Han <jingoohan1@...il.com>,
Kukjin Kim <kgene@...nel.org>,
Krzysztof Kozlowski <krzk@...nel.org>,
Richard Zhu <hongxing.zhu@....com>,
Lucas Stach <l.stach@...gutronix.de>,
Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
"Pengutronix Kernel Team" <kernel@...gutronix.de>,
Fabio Estevam <festevam@...il.com>,
"NXP Linux Team" <linux-imx@....com>,
Yue Wang <yue.wang@...ogic.com>,
"Kevin Hilman" <khilman@...libre.com>,
Neil Armstrong <narmstrong@...libre.com>,
Jerome Brunet <jbrunet@...libre.com>,
Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
Jesper Nilsson <jesper.nilsson@...s.com>,
Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
Xiaowei Song <songxiaowei@...ilicon.com>,
Binghui Wang <wangbinghui@...ilicon.com>,
Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Stanimir Varbanov <svarbanov@...sol.com>,
Pratyush Anand <pratyush.anand@...il.com>,
Thierry Reding <thierry.reding@...il.com>,
Jonathan Hunter <jonathanh@...dia.com>,
"Kunihiko Hayashi" <hayashi.kunihiko@...ionext.com>,
Masahiro Yamada <yamada.masahiro@...ionext.com>,
"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-samsung-soc@...r.kernel.org"
<linux-samsung-soc@...r.kernel.org>,
"linux-amlogic@...ts.infradead.org"
<linux-amlogic@...ts.infradead.org>,
"linux-arm-kernel@...s.com" <linux-arm-kernel@...s.com>,
"linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>
Subject: [PATCH] PCI: dwc: Move dw_pcie_msi_init() from each users to
designware host
Let the designware host take care the integrated msi init rather
than duplicate dw_pcie_msi_init() in each users.
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@...aptics.com>
---
Hi Vidya,
After V7, only this patch is left, others in v2 are not needed. There's one
more clean up chance -- we can also move dw_pcie_free_msi() to designware
host and make it static if we can clean up dra7xx. I see Rob is working on
some larger MSI clean-ups, maybe this will be done in his clean-ups.
Thanks
drivers/pci/controller/dwc/pci-dra7xx.c | 1 -
drivers/pci/controller/dwc/pci-exynos.c | 2 --
drivers/pci/controller/dwc/pci-imx6.c | 1 -
drivers/pci/controller/dwc/pci-meson.c | 2 --
drivers/pci/controller/dwc/pcie-artpec6.c | 1 -
drivers/pci/controller/dwc/pcie-designware-host.c | 5 +++--
drivers/pci/controller/dwc/pcie-designware-plat.c | 1 -
drivers/pci/controller/dwc/pcie-designware.h | 5 -----
drivers/pci/controller/dwc/pcie-histb.c | 1 -
drivers/pci/controller/dwc/pcie-kirin.c | 1 -
drivers/pci/controller/dwc/pcie-qcom.c | 1 -
drivers/pci/controller/dwc/pcie-spear13xx.c | 4 +---
drivers/pci/controller/dwc/pcie-tegra194.c | 2 --
drivers/pci/controller/dwc/pcie-uniphier.c | 2 --
14 files changed, 4 insertions(+), 25 deletions(-)
diff --git a/drivers/pci/controller/dwc/pci-dra7xx.c b/drivers/pci/controller/dwc/pci-dra7xx.c
index 6d012d2b1e90..a5edaa6b6b58 100644
--- a/drivers/pci/controller/dwc/pci-dra7xx.c
+++ b/drivers/pci/controller/dwc/pci-dra7xx.c
@@ -185,7 +185,6 @@ static int dra7xx_pcie_host_init(struct pcie_port *pp)
dra7xx_pcie_establish_link(pci);
dw_pcie_wait_for_link(pci);
- dw_pcie_msi_init(pp);
dra7xx_pcie_enable_interrupts(dra7xx);
return 0;
diff --git a/drivers/pci/controller/dwc/pci-exynos.c b/drivers/pci/controller/dwc/pci-exynos.c
index 242683cde04a..97c166885277 100644
--- a/drivers/pci/controller/dwc/pci-exynos.c
+++ b/drivers/pci/controller/dwc/pci-exynos.c
@@ -298,8 +298,6 @@ static void exynos_pcie_msi_init(struct exynos_pcie *ep)
struct pcie_port *pp = &pci->pp;
u32 val;
- dw_pcie_msi_init(pp);
-
/* enable MSI interrupt */
val = exynos_pcie_readl(ep->mem_res->elbi_base, PCIE_IRQ_EN_LEVEL);
val |= IRQ_MSI_ENABLE;
diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 337c74cbdfdb..cf52eb5d7d2e 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -836,7 +836,6 @@ 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);
- 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 33deb290c4e7..11bfc42fac1c 100644
--- a/drivers/pci/controller/dwc/pci-meson.c
+++ b/drivers/pci/controller/dwc/pci-meson.c
@@ -387,8 +387,6 @@ static int meson_pcie_host_init(struct pcie_port *pp)
if (ret)
return ret;
- 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 929448e9e0bc..73d4bf99c737 100644
--- a/drivers/pci/controller/dwc/pcie-artpec6.c
+++ b/drivers/pci/controller/dwc/pcie-artpec6.c
@@ -331,7 +331,6 @@ 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);
- 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 d02c7e74738d..7622f114223e 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -275,7 +275,7 @@ void dw_pcie_free_msi(struct pcie_port *pp)
}
}
-void dw_pcie_msi_init(struct pcie_port *pp)
+static void dw_pcie_msi_init(struct pcie_port *pp)
{
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
u64 msi_target = (u64)pp->msi_data;
@@ -287,7 +287,6 @@ void dw_pcie_msi_init(struct pcie_port *pp)
dw_pcie_writel_dbi(pci, PCIE_MSI_ADDR_LO, lower_32_bits(msi_target));
dw_pcie_writel_dbi(pci, PCIE_MSI_ADDR_HI, upper_32_bits(msi_target));
}
-EXPORT_SYMBOL_GPL(dw_pcie_msi_init);
int dw_pcie_host_init(struct pcie_port *pp)
{
@@ -545,6 +544,8 @@ void dw_pcie_setup_rc(struct pcie_port *pp)
~0);
}
}
+ if (pci_msi_enabled() && pp->msi_data)
+ dw_pcie_msi_init(pp);
/* Setup RC BARs */
dw_pcie_writel_dbi(pci, PCI_BASE_ADDRESS_0, 0x00000004);
diff --git a/drivers/pci/controller/dwc/pcie-designware-plat.c b/drivers/pci/controller/dwc/pcie-designware-plat.c
index e3e300669ed5..9ccf69a3dcf4 100644
--- a/drivers/pci/controller/dwc/pcie-designware-plat.c
+++ b/drivers/pci/controller/dwc/pcie-designware-plat.c
@@ -39,7 +39,6 @@ static int dw_plat_pcie_host_init(struct pcie_port *pp)
dw_pcie_setup_rc(pp);
dw_pcie_wait_for_link(pci);
- dw_pcie_msi_init(pp);
return 0;
}
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 9d2f511f13fa..f9f6b276a11a 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -365,7 +365,6 @@ static inline void dw_pcie_dbi_ro_wr_dis(struct dw_pcie *pci)
#ifdef CONFIG_PCIE_DW_HOST
irqreturn_t dw_handle_msi_irq(struct pcie_port *pp);
-void dw_pcie_msi_init(struct pcie_port *pp);
void dw_pcie_free_msi(struct pcie_port *pp);
void dw_pcie_setup_rc(struct pcie_port *pp);
int dw_pcie_host_init(struct pcie_port *pp);
@@ -379,10 +378,6 @@ static inline irqreturn_t dw_handle_msi_irq(struct pcie_port *pp)
return IRQ_NONE;
}
-static inline void dw_pcie_msi_init(struct pcie_port *pp)
-{
-}
-
static inline void dw_pcie_free_msi(struct pcie_port *pp)
{
}
diff --git a/drivers/pci/controller/dwc/pcie-histb.c b/drivers/pci/controller/dwc/pcie-histb.c
index afc1abbe49aa..aa9eaee2c4bd 100644
--- a/drivers/pci/controller/dwc/pcie-histb.c
+++ b/drivers/pci/controller/dwc/pcie-histb.c
@@ -202,7 +202,6 @@ static int histb_pcie_host_init(struct pcie_port *pp)
pp->bridge->ops = &histb_pci_ops;
histb_pcie_establish_link(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 6f01ae013326..dc30e43a6be9 100644
--- a/drivers/pci/controller/dwc/pcie-kirin.c
+++ b/drivers/pci/controller/dwc/pcie-kirin.c
@@ -429,7 +429,6 @@ static int kirin_pcie_host_init(struct pcie_port *pp)
pp->bridge->ops = &kirin_pci_ops;
kirin_pcie_establish_link(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 5eb28251dbee..4f66e534e011 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -1271,7 +1271,6 @@ static int qcom_pcie_host_init(struct pcie_port *pp)
}
dw_pcie_setup_rc(pp);
- dw_pcie_msi_init(pp);
qcom_ep_reset_deassert(pcie);
diff --git a/drivers/pci/controller/dwc/pcie-spear13xx.c b/drivers/pci/controller/dwc/pcie-spear13xx.c
index e348225f651f..c75550573a1e 100644
--- a/drivers/pci/controller/dwc/pcie-spear13xx.c
+++ b/drivers/pci/controller/dwc/pcie-spear13xx.c
@@ -129,11 +129,9 @@ static void spear13xx_pcie_enable_interrupts(struct spear13xx_pcie *spear13xx_pc
struct pcie_app_reg *app_reg = spear13xx_pcie->app_base;
/* Enable MSI interrupt */
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- dw_pcie_msi_init(pp);
+ if (IS_ENABLED(CONFIG_PCI_MSI))
writel(readl(&app_reg->int_mask) |
MSI_CTRL_INT, &app_reg->int_mask);
- }
}
static int spear13xx_pcie_link_up(struct dw_pcie *pci)
diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index aa511ec0d800..b093be21cab2 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -772,8 +772,6 @@ static void tegra_pcie_enable_msi_interrupts(struct pcie_port *pp)
struct tegra_pcie_dw *pcie = to_tegra_pcie(pci);
u32 val;
- dw_pcie_msi_init(pp);
-
/* Enable MSI interrupt generation */
val = appl_readl(pcie, APPL_INTR_EN_L0_0);
val |= APPL_INTR_EN_L0_0_SYS_MSI_INTR_EN;
diff --git a/drivers/pci/controller/dwc/pcie-uniphier.c b/drivers/pci/controller/dwc/pcie-uniphier.c
index 48176265c867..c19bdfed4337 100644
--- a/drivers/pci/controller/dwc/pcie-uniphier.c
+++ b/drivers/pci/controller/dwc/pcie-uniphier.c
@@ -322,8 +322,6 @@ static int uniphier_pcie_host_init(struct pcie_port *pp)
if (ret)
return ret;
- dw_pcie_msi_init(pp);
-
return 0;
}
--
2.28.0
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