From: Minda Chen <minda.chen@starfivetech.com>
To: "Conor Dooley" <conor@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Rob Herring" <robh+dt@kernel.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Daire McNamara" <daire.mcnamara@microchip.com>,
"Emil Renner Berthing" <emil.renner.berthing@canonical.com>,
"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>
Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-riscv@lists.infradead.org, linux-pci@vger.kernel.org,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Philipp Zabel <p.zabel@pengutronix.de>,
Mason Huo <mason.huo@starfivetech.com>,
Leyfoon Tan <leyfoon.tan@starfivetech.com>,
Kevin Xie <kevin.xie@starfivetech.com>,
Minda Chen <minda.chen@starfivetech.com>
Subject: [PATCH v14 18/22] PCI: plda: Add host init/deinit and map bus functions
Date: Mon, 8 Jan 2024 19:06:08 +0800 [thread overview]
Message-ID: <20240108110612.19048-19-minda.chen@starfivetech.com> (raw)
In-Reply-To: <20240108110612.19048-1-minda.chen@starfivetech.com>
Add PLDA host plda_pcie_host_init()/plda_pcie_host_deinit() and map bus
function. So vendor can use it to init PLDA PCIe host core.
Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
Reviewed-by: Mason Huo <mason.huo@starfivetech.com>
---
drivers/pci/controller/plda/pcie-plda-host.c | 131 +++++++++++++++++--
drivers/pci/controller/plda/pcie-plda.h | 22 ++++
2 files changed, 139 insertions(+), 14 deletions(-)
diff --git a/drivers/pci/controller/plda/pcie-plda-host.c b/drivers/pci/controller/plda/pcie-plda-host.c
index a040e7e5492f..a18923d7cea6 100644
--- a/drivers/pci/controller/plda/pcie-plda-host.c
+++ b/drivers/pci/controller/plda/pcie-plda-host.c
@@ -3,6 +3,7 @@
* PLDA PCIe XpressRich host controller driver
*
* Copyright (C) 2023 Microchip Co. Ltd
+ * StarFive Co. Ltd
*
* Author: Daire McNamara <daire.mcnamara@microchip.com>
*/
@@ -15,6 +16,15 @@
#include "pcie-plda.h"
+void __iomem *plda_pcie_map_bus(struct pci_bus *bus, unsigned int devfn,
+ int where)
+{
+ struct plda_pcie_rp *pcie = bus->sysdata;
+
+ return pcie->config_base + PCIE_ECAM_OFFSET(bus->number, devfn, where);
+}
+EXPORT_SYMBOL_GPL(plda_pcie_map_bus);
+
static void plda_handle_msi(struct irq_desc *desc)
{
struct plda_pcie_rp *port = irq_desc_get_handler_data(desc);
@@ -420,9 +430,7 @@ int plda_init_interrupts(struct platform_device *pdev,
const struct plda_event *event)
{
struct device *dev = &pdev->dev;
- int irq;
- int intx_irq, msi_irq, event_irq;
- int ret;
+ int event_irq, ret;
u32 i;
if (!port->event_ops)
@@ -437,8 +445,8 @@ int plda_init_interrupts(struct platform_device *pdev,
return ret;
}
- irq = platform_get_irq(pdev, 0);
- if (irq < 0)
+ port->irq = platform_get_irq(pdev, 0);
+ if (port->irq < 0)
return -ENODEV;
for_each_set_bit(i, &port->events_bitmap, port->num_events) {
@@ -461,26 +469,26 @@ int plda_init_interrupts(struct platform_device *pdev,
}
}
- intx_irq = irq_create_mapping(port->event_domain,
- event->intx_event);
- if (!intx_irq) {
+ port->intx_irq = irq_create_mapping(port->event_domain,
+ event->intx_event);
+ if (!port->intx_irq) {
dev_err(dev, "failed to map INTx interrupt\n");
return -ENXIO;
}
/* Plug the INTx chained handler */
- irq_set_chained_handler_and_data(intx_irq, plda_handle_intx, port);
+ irq_set_chained_handler_and_data(port->intx_irq, plda_handle_intx, port);
- msi_irq = irq_create_mapping(port->event_domain,
- event->msi_event);
- if (!msi_irq)
+ port->msi_irq = irq_create_mapping(port->event_domain,
+ event->msi_event);
+ if (!port->msi_irq)
return -ENXIO;
/* Plug the MSI chained handler */
- irq_set_chained_handler_and_data(msi_irq, plda_handle_msi, port);
+ irq_set_chained_handler_and_data(port->msi_irq, plda_handle_msi, port);
/* Plug the main event chained handler */
- irq_set_chained_handler_and_data(irq, plda_handle_event, port);
+ irq_set_chained_handler_and_data(port->irq, plda_handle_event, port);
return 0;
}
@@ -546,3 +554,98 @@ int plda_pcie_setup_iomems(struct pci_host_bridge *bridge,
return 0;
}
EXPORT_SYMBOL_GPL(plda_pcie_setup_iomems);
+
+static void plda_pcie_irq_domain_deinit(struct plda_pcie_rp *pcie)
+{
+ irq_set_chained_handler_and_data(pcie->irq, NULL, NULL);
+ irq_set_chained_handler_and_data(pcie->msi_irq, NULL, NULL);
+ irq_set_chained_handler_and_data(pcie->intx_irq, NULL, NULL);
+
+ irq_domain_remove(pcie->msi.msi_domain);
+ irq_domain_remove(pcie->msi.dev_domain);
+
+ irq_domain_remove(pcie->intx_domain);
+ irq_domain_remove(pcie->event_domain);
+}
+
+int plda_pcie_host_init(struct plda_pcie_rp *port, struct pci_ops *ops,
+ const struct plda_event *plda_event)
+{
+ struct device *dev = port->dev;
+ struct pci_host_bridge *bridge;
+ struct platform_device *pdev = to_platform_device(dev);
+ struct resource *cfg_res;
+ int ret;
+
+ pdev = to_platform_device(dev);
+
+ port->bridge_addr =
+ devm_platform_ioremap_resource_byname(pdev, "apb");
+
+ if (IS_ERR(port->bridge_addr))
+ return dev_err_probe(dev, PTR_ERR(port->bridge_addr),
+ "failed to map reg memory\n");
+
+ cfg_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cfg");
+ if (!cfg_res)
+ return dev_err_probe(dev, -ENODEV,
+ "failed to get config memory\n");
+
+ port->config_base = devm_ioremap_resource(dev, cfg_res);
+ if (IS_ERR(port->config_base))
+ return dev_err_probe(dev, PTR_ERR(port->config_base),
+ "failed to map config memory\n");
+
+ bridge = devm_pci_alloc_host_bridge(dev, 0);
+ if (!bridge)
+ return dev_err_probe(dev, -ENOMEM,
+ "failed to alloc bridge\n");
+
+ if (port->host_ops && port->host_ops->host_init) {
+ ret = port->host_ops->host_init(port);
+ if (ret)
+ return ret;
+ }
+
+ port->bridge = bridge;
+ plda_pcie_setup_window(port->bridge_addr, 0, cfg_res->start, 0,
+ resource_size(cfg_res));
+ plda_pcie_setup_iomems(bridge, port);
+ plda_set_default_msi(&port->msi);
+ ret = plda_init_interrupts(pdev, port, plda_event);
+ if (ret)
+ goto err_host;
+
+ /* Set default bus ops */
+ bridge->ops = ops;
+ bridge->sysdata = port;
+
+ ret = pci_host_probe(bridge);
+ if (ret < 0) {
+ dev_err_probe(dev, ret, "failed to probe pci host\n");
+ goto err_probe;
+ }
+
+ return ret;
+
+err_probe:
+ plda_pcie_irq_domain_deinit(port);
+err_host:
+ if (port->host_ops && port->host_ops->host_deinit)
+ port->host_ops->host_deinit(port);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(plda_pcie_host_init);
+
+void plda_pcie_host_deinit(struct plda_pcie_rp *port)
+{
+ pci_stop_root_bus(port->bridge->bus);
+ pci_remove_root_bus(port->bridge->bus);
+
+ plda_pcie_irq_domain_deinit(port);
+
+ if (port->host_ops && port->host_ops->host_deinit)
+ port->host_ops->host_deinit(port);
+}
+EXPORT_SYMBOL_GPL(plda_pcie_host_deinit);
diff --git a/drivers/pci/controller/plda/pcie-plda.h b/drivers/pci/controller/plda/pcie-plda.h
index 443109d04d59..7b69891700a4 100644
--- a/drivers/pci/controller/plda/pcie-plda.h
+++ b/drivers/pci/controller/plda/pcie-plda.h
@@ -141,6 +141,11 @@ struct plda_event_ops {
u32 (*get_events)(struct plda_pcie_rp *pcie);
};
+struct plda_pcie_host_ops {
+ int (*host_init)(struct plda_pcie_rp *pcie);
+ void (*host_deinit)(struct plda_pcie_rp *pcie);
+};
+
struct plda_msi {
struct mutex lock; /* Protect used bitmap */
struct irq_domain *msi_domain;
@@ -152,14 +157,20 @@ struct plda_msi {
struct plda_pcie_rp {
struct device *dev;
+ struct pci_host_bridge *bridge;
struct irq_domain *intx_domain;
struct irq_domain *event_domain;
raw_spinlock_t lock;
struct plda_msi msi;
const struct plda_event_ops *event_ops;
const struct irq_chip *event_irq_chip;
+ const struct plda_pcie_host_ops *host_ops;
void __iomem *bridge_addr;
+ void __iomem *config_base;
unsigned long events_bitmap;
+ int irq;
+ int msi_irq;
+ int intx_irq;
int num_events;
};
@@ -170,6 +181,8 @@ struct plda_event {
int msi_event;
};
+void __iomem *plda_pcie_map_bus(struct pci_bus *bus, unsigned int devfn,
+ int where);
int plda_init_interrupts(struct platform_device *pdev,
struct plda_pcie_rp *port,
const struct plda_event *event);
@@ -178,4 +191,13 @@ void plda_pcie_setup_window(void __iomem *bridge_base_addr, u32 index,
size_t size);
int plda_pcie_setup_iomems(struct pci_host_bridge *bridge,
struct plda_pcie_rp *port);
+int plda_pcie_host_init(struct plda_pcie_rp *port, struct pci_ops *ops,
+ const struct plda_event *plda_event);
+void plda_pcie_host_deinit(struct plda_pcie_rp *pcie);
+
+static inline void plda_set_default_msi(struct plda_msi *msi)
+{
+ msi->vector_phy = IMSI_ADDR;
+ msi->num_vectors = PLDA_MAX_NUM_MSI_IRQS;
+}
#endif
--
2.17.1
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next prev parent reply other threads:[~2024-01-08 11:07 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-08 11:05 [PATCH v14 0/22] Refactoring Microchip PCIe driver and add StarFive PCIe Minda Chen
2024-01-08 11:05 ` [PATCH v14 01/22] dt-bindings: PCI: Add PLDA XpressRICH PCIe host common properties Minda Chen
2024-01-08 11:21 ` 回复: " Minda Chen
2024-01-08 11:05 ` [PATCH v14 02/22] PCI: microchip: Move pcie-microchip-host.c to plda directory Minda Chen
2024-01-08 11:05 ` [PATCH v14 03/22] PCI: microchip: Move PLDA IP register macros to pcie-plda.h Minda Chen
2024-01-08 11:05 ` [PATCH v14 04/22] PCI: microchip: Add bridge_addr field to struct mc_pcie Minda Chen
2024-01-08 11:05 ` [PATCH v14 05/22] PCI: microchip: Rename two PCIe data structures Minda Chen
2024-01-08 11:05 ` [PATCH v14 06/22] PCI: microchip: Move PCIe host data structures to plda-pcie.h Minda Chen
2024-01-08 11:05 ` [PATCH v14 07/22] PCI: microchip: Rename two setup functions Minda Chen
2024-01-08 11:05 ` [PATCH v14 08/22] PCI: microchip: Change the argument of plda_pcie_setup_iomems() Minda Chen
2024-01-08 11:05 ` [PATCH v14 09/22] PCI: microchip: Move setup functions to pcie-plda-host.c Minda Chen
2024-01-08 11:06 ` [PATCH v14 10/22] PCI: microchip: Rename interrupt related functions Minda Chen
2024-01-08 11:06 ` [PATCH v14 11/22] PCI: microchip: Add num_events field to struct plda_pcie_rp Minda Chen
2024-01-08 11:06 ` [PATCH v14 12/22] PCI: microchip: Add request_event_irq() callback function Minda Chen
2024-01-08 11:06 ` [PATCH v14 13/22] PCI: microchip: Add INTx and MSI event num to struct plda_event Minda Chen
2024-01-08 11:06 ` [PATCH v14 14/22] PCI: microchip: Add get_events() callback and add PLDA get_event() Minda Chen
2024-01-08 11:15 ` 回复: " Minda Chen
2024-01-08 11:06 ` [PATCH v14 15/22] PCI: microchip: Add event irqchip field to host port and add PLDA irqchip Minda Chen
2024-01-08 11:17 ` 回复: " Minda Chen
2024-01-08 11:06 ` [PATCH v14 16/22] PCI: microchip: Move IRQ functions to pcie-plda-host.c Minda Chen
2024-01-08 11:06 ` [PATCH v14 17/22] pci: plda: Add event bitmap field to struct plda_pcie_rp Minda Chen
2024-01-08 11:06 ` Minda Chen [this message]
2024-01-08 11:06 ` [PATCH v14 19/22] dt-bindings: PCI: Add StarFive JH7110 PCIe controller Minda Chen
2024-01-08 11:06 ` [PATCH v14 20/22] PCI: Add PCIE_RESET_CONFIG_DEVICE_WAIT_MS waiting time value Minda Chen
2024-01-08 11:06 ` [PATCH v14 21/22] PCI: starfive: Add JH7110 PCIe controller Minda Chen
2024-01-08 11:06 ` [PATCH v14 22/22] riscv: dts: starfive: add PCIe dts configuration for JH7110 Minda Chen
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