From: Vidya Sagar <vidyas@nvidia.com>
To: <bhelgaas@google.com>, <robh+dt@kernel.org>,
<mark.rutland@arm.com>, <thierry.reding@gmail.com>,
<jonathanh@nvidia.com>, <kishon@ti.com>,
<catalin.marinas@arm.com>, <will.deacon@arm.com>,
<lorenzo.pieralisi@arm.com>, <jingoohan1@gmail.com>,
<gustavo.pimentel@synopsys.com>
Cc: <mperttunen@nvidia.com>, <linux-pci@vger.kernel.org>,
<devicetree@vger.kernel.org>, <linux-tegra@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>, <kthota@nvidia.com>,
<mmaddireddy@nvidia.com>, <vidyas@nvidia.com>,
<sagar.tv@gmail.com>
Subject: [PATCH V3 05/16] PCI: dwc: Move config space capability search API
Date: Wed, 17 Apr 2019 00:57:19 +0530 [thread overview]
Message-ID: <20190416192730.15681-6-vidyas@nvidia.com> (raw)
In-Reply-To: <20190416192730.15681-1-vidyas@nvidia.com>
move PCIe config space capability search API to common designware file
as this can be used by both host and ep mode codes.
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
---
Changes from [v2]:
* None
Changes from [v1]:
* Removed dw_pcie_find_next_ext_capability() API from here and made a
separate patch for that
.../pci/controller/dwc/pcie-designware-ep.c | 37 +------------------
drivers/pci/controller/dwc/pcie-designware.c | 33 +++++++++++++++++
drivers/pci/controller/dwc/pcie-designware.h | 2 +
3 files changed, 37 insertions(+), 35 deletions(-)
diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index 24f5a775ad34..b9d9c9a4ba6d 100644
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -40,39 +40,6 @@ void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar)
__dw_pcie_ep_reset_bar(pci, bar, 0);
}
-static u8 __dw_pcie_ep_find_next_cap(struct dw_pcie *pci, u8 cap_ptr,
- u8 cap)
-{
- u8 cap_id, next_cap_ptr;
- u16 reg;
-
- reg = dw_pcie_readw_dbi(pci, cap_ptr);
- next_cap_ptr = (reg & 0xff00) >> 8;
- cap_id = (reg & 0x00ff);
-
- if (!next_cap_ptr || cap_id > PCI_CAP_ID_MAX)
- return 0;
-
- if (cap_id == cap)
- return cap_ptr;
-
- return __dw_pcie_ep_find_next_cap(pci, next_cap_ptr, cap);
-}
-
-static u8 dw_pcie_ep_find_capability(struct dw_pcie *pci, u8 cap)
-{
- u8 next_cap_ptr;
- u16 reg;
-
- reg = dw_pcie_readw_dbi(pci, PCI_CAPABILITY_LIST);
- next_cap_ptr = (reg & 0x00ff);
-
- if (!next_cap_ptr)
- return 0;
-
- return __dw_pcie_ep_find_next_cap(pci, next_cap_ptr, cap);
-}
-
static int dw_pcie_ep_write_header(struct pci_epc *epc, u8 func_no,
struct pci_epf_header *hdr)
{
@@ -591,9 +558,9 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep)
dev_err(dev, "Failed to reserve memory for MSI/MSI-X\n");
return -ENOMEM;
}
- ep->msi_cap = dw_pcie_ep_find_capability(pci, PCI_CAP_ID_MSI);
+ ep->msi_cap = dw_pcie_find_capability(pci, PCI_CAP_ID_MSI);
- ep->msix_cap = dw_pcie_ep_find_capability(pci, PCI_CAP_ID_MSIX);
+ ep->msix_cap = dw_pcie_find_capability(pci, PCI_CAP_ID_MSIX);
dw_pcie_setup(pci);
diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c
index f98e2f284ae1..d68c123e409c 100644
--- a/drivers/pci/controller/dwc/pcie-designware.c
+++ b/drivers/pci/controller/dwc/pcie-designware.c
@@ -20,6 +20,39 @@
#define PCIE_PHY_DEBUG_R1_LINK_UP (0x1 << 4)
#define PCIE_PHY_DEBUG_R1_LINK_IN_TRAINING (0x1 << 29)
+static u8 __dw_pcie_find_next_cap(struct dw_pcie *pci, u8 cap_ptr,
+ u8 cap)
+{
+ u8 cap_id, next_cap_ptr;
+ u16 reg;
+
+ reg = dw_pcie_readw_dbi(pci, cap_ptr);
+ next_cap_ptr = (reg & 0xff00) >> 8;
+ cap_id = (reg & 0x00ff);
+
+ if (!next_cap_ptr || cap_id > PCI_CAP_ID_MAX)
+ return 0;
+
+ if (cap_id == cap)
+ return cap_ptr;
+
+ return __dw_pcie_find_next_cap(pci, next_cap_ptr, cap);
+}
+
+u8 dw_pcie_find_capability(struct dw_pcie *pci, u8 cap)
+{
+ u8 next_cap_ptr;
+ u16 reg;
+
+ reg = dw_pcie_readw_dbi(pci, PCI_CAPABILITY_LIST);
+ next_cap_ptr = (reg & 0x00ff);
+
+ if (!next_cap_ptr)
+ return 0;
+
+ return __dw_pcie_find_next_cap(pci, next_cap_ptr, cap);
+}
+
int dw_pcie_read(void __iomem *addr, int size, u32 *val)
{
if (!IS_ALIGNED((uintptr_t)addr, size)) {
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 86df36701a37..4ccd4c706ddb 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -247,6 +247,8 @@ struct dw_pcie {
#define to_dw_pcie_from_ep(endpoint) \
container_of((endpoint), struct dw_pcie, ep)
+u8 dw_pcie_find_capability(struct dw_pcie *pci, u8 cap);
+
int dw_pcie_read(void __iomem *addr, int size, u32 *val);
int dw_pcie_write(void __iomem *addr, int size, u32 val);
--
2.17.1
next prev parent reply other threads:[~2019-04-16 19:28 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-16 19:27 [PATCH V3 00/16] Add Tegra194 PCIe support Vidya Sagar
2019-04-16 19:27 ` [PATCH V3 01/16] PCI: Add #defines for some of PCIe spec r4.0 features Vidya Sagar
2019-04-16 19:27 ` [PATCH V3 02/16] PCI/PME: Export pcie_pme_disable_msi() & pcie_pme_no_msi() APIs Vidya Sagar
2019-04-16 19:27 ` [PATCH V3 03/16] PCI: Export pcie_bus_config symbol Vidya Sagar
2019-04-16 19:27 ` [PATCH V3 04/16] PCI: dwc: Perform dbi regs write lock towards the end Vidya Sagar
2019-04-17 9:56 ` Gustavo Pimentel
2019-04-22 7:54 ` Jisheng Zhang
2019-04-23 6:11 ` Vidya Sagar
2019-04-23 9:40 ` Gustavo Pimentel
2019-04-30 0:36 ` [EXT] " Z.q. Hou
2019-04-16 19:27 ` Vidya Sagar [this message]
2019-04-17 9:28 ` [PATCH V3 05/16] PCI: dwc: Move config space capability search API Gustavo Pimentel
2019-04-16 19:27 ` [PATCH V3 06/16] PCI: dwc: Add ext " Vidya Sagar
2019-04-17 9:27 ` Gustavo Pimentel
2019-04-17 9:34 ` Vidya Sagar
2019-04-17 9:46 ` Gustavo Pimentel
2019-04-16 19:27 ` [PATCH V3 07/16] dt-bindings: PCI: designware: Add binding for CDM register check Vidya Sagar
2019-04-16 19:27 ` [PATCH V3 08/16] PCI: dwc: Add support to enable " Vidya Sagar
2019-04-17 9:39 ` Gustavo Pimentel
2019-04-16 19:27 ` [PATCH V3 09/16] Documentation/devicetree: Add PCIe supports-clkreq property Vidya Sagar
2019-04-16 19:27 ` [PATCH V3 10/16] dt-bindings: PCI: tegra: Add device tree support for T194 Vidya Sagar
2019-04-16 19:27 ` [PATCH V3 11/16] dt-bindings: PHY: P2U: Add Tegra 194 P2U block Vidya Sagar
2019-04-16 19:27 ` [PATCH V3 12/16] arm64: tegra: Add P2U and PCIe controller nodes to Tegra194 DT Vidya Sagar
2019-04-16 19:27 ` [PATCH V3 13/16] arm64: tegra: Enable PCIe slots in P2972-0000 board Vidya Sagar
2019-04-16 19:27 ` [PATCH V3 14/16] phy: tegra: Add PCIe PIPE2UPHY support Vidya Sagar
2019-04-16 19:27 ` [PATCH V3 15/16] PCI: tegra: Add Tegra194 PCIe support Vidya Sagar
2019-04-16 19:27 ` [PATCH V3 16/16] arm64: Add Tegra194 PCIe driver to defconfig Vidya Sagar
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