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Message-ID: <20230719102057.22329-5-minda.chen@starfivetech.com>
Date: Wed, 19 Jul 2023 18:20:52 +0800
From: Minda Chen <minda.chen@...rfivetech.com>
To: Daire McNamara <daire.mcnamara@...rochip.com>,
Conor Dooley <conor@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Lorenzo Pieralisi <lpieralisi@...nel.org>,
Krzysztof Wilczyński <kw@...ux.com>,
Emil Renner Berthing <emil.renner.berthing@...onical.com>
CC: <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-riscv@...ts.infradead.org>, <linux-pci@...r.kernel.org>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
Albert Ou <aou@...s.berkeley.edu>,
Philipp Zabel <p.zabel@...gutronix.de>,
Mason Huo <mason.huo@...rfivetech.com>,
Leyfoon Tan <leyfoon.tan@...rfivetech.com>,
Kevin Xie <kevin.xie@...rfivetech.com>,
Minda Chen <minda.chen@...rfivetech.com>
Subject: [PATCH v1 4/9] PCI: microchip: Move PCIe driver to PLDA directory
Move Microchip specific platform codes to PLDA directory.
Including clock init, interrupt event handle and platform
init codes.
Signed-off-by: Minda Chen <minda.chen@...rfivetech.com>
---
MAINTAINERS | 4 +-
drivers/pci/controller/Kconfig | 8 -
drivers/pci/controller/Makefile | 1 -
drivers/pci/controller/plda/Kconfig | 10 +-
drivers/pci/controller/plda/Makefile | 1 +
.../{ => plda}/pcie-microchip-host.c | 594 ++----------------
6 files changed, 55 insertions(+), 563 deletions(-)
rename drivers/pci/controller/{ => plda}/pcie-microchip-host.c (50%)
diff --git a/MAINTAINERS b/MAINTAINERS
index 3b3c4d8808ae..f02618c2bdf5 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -16503,7 +16503,7 @@ M: Daire McNamara <daire.mcnamara@...rochip.com>
L: linux-pci@...r.kernel.org
S: Supported
F: Documentation/devicetree/bindings/pci/microchip*
-F: drivers/pci/controller/*microchip*
+F: drivers/pci/controller/plda/*microchip*
PCIE DRIVER FOR QUALCOMM MSM
M: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
@@ -18287,7 +18287,7 @@ F: drivers/char/hw_random/mpfs-rng.c
F: drivers/clk/microchip/clk-mpfs*.c
F: drivers/i2c/busses/i2c-microchip-corei2c.c
F: drivers/mailbox/mailbox-mpfs.c
-F: drivers/pci/controller/pcie-microchip-host.c
+F: drivers/pci/controller/plda/pcie-microchip-host.c
F: drivers/pwm/pwm-microchip-core.c
F: drivers/reset/reset-mpfs.c
F: drivers/rtc/rtc-mpfs.c
diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig
index a106dabcb8dc..107cdb69e15c 100644
--- a/drivers/pci/controller/Kconfig
+++ b/drivers/pci/controller/Kconfig
@@ -216,14 +216,6 @@ config PCIE_MT7621
help
This selects a driver for the MediaTek MT7621 PCIe Controller.
-config PCIE_MICROCHIP_HOST
- bool "Microchip AXI PCIe controller"
- depends on PCI_MSI && OF
- select PCI_HOST_COMMON
- help
- Say Y here if you want kernel to support the Microchip AXI PCIe
- Host Bridge driver.
-
config PCI_HYPERV_INTERFACE
tristate "Microsoft Hyper-V PCI Interface"
depends on ((X86 && X86_64) || ARM64) && HYPERV && PCI_MSI
diff --git a/drivers/pci/controller/Makefile b/drivers/pci/controller/Makefile
index aa0a691ebcbc..93236dc97b21 100644
--- a/drivers/pci/controller/Makefile
+++ b/drivers/pci/controller/Makefile
@@ -32,7 +32,6 @@ obj-$(CONFIG_PCIE_ROCKCHIP_EP) += pcie-rockchip-ep.o
obj-$(CONFIG_PCIE_ROCKCHIP_HOST) += pcie-rockchip-host.o
obj-$(CONFIG_PCIE_MEDIATEK) += pcie-mediatek.o
obj-$(CONFIG_PCIE_MEDIATEK_GEN3) += pcie-mediatek-gen3.o
-obj-$(CONFIG_PCIE_MICROCHIP_HOST) += pcie-microchip-host.o
obj-$(CONFIG_VMD) += vmd.o
obj-$(CONFIG_PCIE_BRCMSTB) += pcie-brcmstb.o
obj-$(CONFIG_PCI_LOONGSON) += pci-loongson.o
diff --git a/drivers/pci/controller/plda/Kconfig b/drivers/pci/controller/plda/Kconfig
index 37e17326671b..fb274976b84b 100644
--- a/drivers/pci/controller/plda/Kconfig
+++ b/drivers/pci/controller/plda/Kconfig
@@ -4,8 +4,16 @@ menu "PLDA PCIe controllers support"
depends on PCI
config PCIE_PLDA_HOST
- bool "PLDA PCIe host controller"
+ bool
depends on OF && PCI_MSI
select IRQ_DOMAIN
+config PCIE_MICROCHIP_HOST
+ bool "Microchip AXI PCIe controller"
+ select PCI_HOST_COMMON
+ select PCIE_PLDA_HOST
+ help
+ Say Y here if you want kernel to support the Microchip AXI PCIe
+ Host Bridge driver.
+
endmenu
diff --git a/drivers/pci/controller/plda/Makefile b/drivers/pci/controller/plda/Makefile
index 79dbae655c2b..4340ab007f44 100644
--- a/drivers/pci/controller/plda/Makefile
+++ b/drivers/pci/controller/plda/Makefile
@@ -1,2 +1,3 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_PCIE_PLDA_HOST) += pcie-plda-host.o
+obj-$(CONFIG_PCIE_MICROCHIP_HOST) += pcie-microchip-host.o
diff --git a/drivers/pci/controller/pcie-microchip-host.c b/drivers/pci/controller/plda/pcie-microchip-host.c
similarity index 50%
rename from drivers/pci/controller/pcie-microchip-host.c
rename to drivers/pci/controller/plda/pcie-microchip-host.c
index 5e710e485464..4ff3d956c7f8 100644
--- a/drivers/pci/controller/pcie-microchip-host.c
+++ b/drivers/pci/controller/plda/pcie-microchip-host.c
@@ -17,11 +17,8 @@
#include <linux/pci-ecam.h>
#include <linux/platform_device.h>
-#include "../pci.h"
-
-/* Number of MSI IRQs */
-#define MC_NUM_MSI_IRQS 32
-#define MC_NUM_MSI_IRQS_CODED 5
+#include "../../pci.h"
+#include "pcie-plda.h"
/* PCIe Bridge Phy and Controller Phy offsets */
#define MC_PCIE1_BRIDGE_ADDR 0x00008000u
@@ -29,6 +26,7 @@
#define MC_PCIE_BRIDGE_ADDR (MC_PCIE1_BRIDGE_ADDR)
#define MC_PCIE_CTRL_ADDR (MC_PCIE1_CTRL_ADDR)
+#define MC_PCIE_CTRL_ADDR_OFFSET 0x00002000u
/* PCIe Controller Phy Regs */
#define SEC_ERROR_CNT 0x20
@@ -82,86 +80,6 @@
#define PCIE_EVENT_INT_ENB_SHIFT 16
#define NUM_PCIE_EVENTS (3)
-/* PCIe Bridge Phy Regs */
-#define PCIE_PCI_IDS_DW1 0x9c
-
-/* PCIe Config space MSI capability structure */
-#define MC_MSI_CAP_CTRL_OFFSET 0xe0u
-#define MC_MSI_MAX_Q_AVAIL (MC_NUM_MSI_IRQS_CODED << 1)
-#define MC_MSI_Q_SIZE (MC_NUM_MSI_IRQS_CODED << 4)
-
-#define IMASK_LOCAL 0x180
-#define DMA_END_ENGINE_0_MASK 0x00000000u
-#define DMA_END_ENGINE_0_SHIFT 0
-#define DMA_END_ENGINE_1_MASK 0x00000000u
-#define DMA_END_ENGINE_1_SHIFT 1
-#define DMA_ERROR_ENGINE_0_MASK 0x00000100u
-#define DMA_ERROR_ENGINE_0_SHIFT 8
-#define DMA_ERROR_ENGINE_1_MASK 0x00000200u
-#define DMA_ERROR_ENGINE_1_SHIFT 9
-#define A_ATR_EVT_POST_ERR_MASK 0x00010000u
-#define A_ATR_EVT_POST_ERR_SHIFT 16
-#define A_ATR_EVT_FETCH_ERR_MASK 0x00020000u
-#define A_ATR_EVT_FETCH_ERR_SHIFT 17
-#define A_ATR_EVT_DISCARD_ERR_MASK 0x00040000u
-#define A_ATR_EVT_DISCARD_ERR_SHIFT 18
-#define A_ATR_EVT_DOORBELL_MASK 0x00000000u
-#define A_ATR_EVT_DOORBELL_SHIFT 19
-#define P_ATR_EVT_POST_ERR_MASK 0x00100000u
-#define P_ATR_EVT_POST_ERR_SHIFT 20
-#define P_ATR_EVT_FETCH_ERR_MASK 0x00200000u
-#define P_ATR_EVT_FETCH_ERR_SHIFT 21
-#define P_ATR_EVT_DISCARD_ERR_MASK 0x00400000u
-#define P_ATR_EVT_DISCARD_ERR_SHIFT 22
-#define P_ATR_EVT_DOORBELL_MASK 0x00000000u
-#define P_ATR_EVT_DOORBELL_SHIFT 23
-#define PM_MSI_INT_INTA_MASK 0x01000000u
-#define PM_MSI_INT_INTA_SHIFT 24
-#define PM_MSI_INT_INTB_MASK 0x02000000u
-#define PM_MSI_INT_INTB_SHIFT 25
-#define PM_MSI_INT_INTC_MASK 0x04000000u
-#define PM_MSI_INT_INTC_SHIFT 26
-#define PM_MSI_INT_INTD_MASK 0x08000000u
-#define PM_MSI_INT_INTD_SHIFT 27
-#define PM_MSI_INT_INTX_MASK 0x0f000000u
-#define PM_MSI_INT_INTX_SHIFT 24
-#define PM_MSI_INT_MSI_MASK 0x10000000u
-#define PM_MSI_INT_MSI_SHIFT 28
-#define PM_MSI_INT_AER_EVT_MASK 0x20000000u
-#define PM_MSI_INT_AER_EVT_SHIFT 29
-#define PM_MSI_INT_EVENTS_MASK 0x40000000u
-#define PM_MSI_INT_EVENTS_SHIFT 30
-#define PM_MSI_INT_SYS_ERR_MASK 0x80000000u
-#define PM_MSI_INT_SYS_ERR_SHIFT 31
-#define NUM_LOCAL_EVENTS 15
-#define ISTATUS_LOCAL 0x184
-#define IMASK_HOST 0x188
-#define ISTATUS_HOST 0x18c
-#define MSI_ADDR 0x190
-#define ISTATUS_MSI 0x194
-
-/* PCIe Master table init defines */
-#define ATR0_PCIE_WIN0_SRCADDR_PARAM 0x600u
-#define ATR0_PCIE_ATR_SIZE 0x25
-#define ATR0_PCIE_ATR_SIZE_SHIFT 1
-#define ATR0_PCIE_WIN0_SRC_ADDR 0x604u
-#define ATR0_PCIE_WIN0_TRSL_ADDR_LSB 0x608u
-#define ATR0_PCIE_WIN0_TRSL_ADDR_UDW 0x60cu
-#define ATR0_PCIE_WIN0_TRSL_PARAM 0x610u
-
-/* PCIe AXI slave table init defines */
-#define ATR0_AXI4_SLV0_SRCADDR_PARAM 0x800u
-#define ATR_SIZE_SHIFT 1
-#define ATR_IMPL_ENABLE 1
-#define ATR0_AXI4_SLV0_SRC_ADDR 0x804u
-#define ATR0_AXI4_SLV0_TRSL_ADDR_LSB 0x808u
-#define ATR0_AXI4_SLV0_TRSL_ADDR_UDW 0x80cu
-#define ATR0_AXI4_SLV0_TRSL_PARAM 0x810u
-#define PCIE_TX_RX_INTERFACE 0x00000000u
-#define PCIE_CONFIG_INTERFACE 0x00000001u
-
-#define ATR_ENTRY_SIZE 32
-
#define EVENT_PCIE_L2_EXIT 0
#define EVENT_PCIE_HOTRST_EXIT 1
#define EVENT_PCIE_DLUP_EXIT 2
@@ -205,7 +123,7 @@
[EVENT_LOCAL_ ## x] = { __stringify(x), s }
#define PCIE_EVENT(x) \
- .base = MC_PCIE_CTRL_ADDR, \
+ .base = MC_PCIE_CTRL_ADDR_OFFSET, \
.offset = PCIE_EVENT_INT, \
.mask_offset = PCIE_EVENT_INT, \
.mask_high = 1, \
@@ -213,7 +131,7 @@
.enb_mask = PCIE_EVENT_INT_ENB_MASK
#define SEC_EVENT(x) \
- .base = MC_PCIE_CTRL_ADDR, \
+ .base = MC_PCIE_CTRL_ADDR_OFFSET, \
.offset = SEC_ERROR_INT, \
.mask_offset = SEC_ERROR_INT_MASK, \
.mask = SEC_ERROR_INT_ ## x ## _INT, \
@@ -221,7 +139,7 @@
.enb_mask = 0
#define DED_EVENT(x) \
- .base = MC_PCIE_CTRL_ADDR, \
+ .base = MC_PCIE_CTRL_ADDR_OFFSET, \
.offset = DED_ERROR_INT, \
.mask_offset = DED_ERROR_INT_MASK, \
.mask_high = 1, \
@@ -229,7 +147,7 @@
.enb_mask = 0
#define LOCAL_EVENT(x) \
- .base = MC_PCIE_BRIDGE_ADDR, \
+ .base = 0, \
.offset = ISTATUS_LOCAL, \
.mask_offset = IMASK_LOCAL, \
.mask_high = 0, \
@@ -253,22 +171,9 @@ struct event_map {
u32 event_bit;
};
-struct mc_msi {
- struct mutex lock; /* Protect used bitmap */
- struct irq_domain *msi_domain;
- struct irq_domain *dev_domain;
- u32 num_vectors;
- u64 vector_phy;
- DECLARE_BITMAP(used, MC_NUM_MSI_IRQS);
-};
-
struct mc_pcie {
+ struct plda_pcie plda;
void __iomem *axi_base_addr;
- struct device *dev;
- struct irq_domain *intx_domain;
- struct irq_domain *event_domain;
- raw_spinlock_t lock;
- struct mc_msi msi;
};
struct cause {
@@ -382,275 +287,6 @@ static struct {
static char poss_clks[][5] = { "fic0", "fic1", "fic2", "fic3" };
-static void mc_pcie_enable_msi(struct mc_pcie *port, void __iomem *base)
-{
- struct mc_msi *msi = &port->msi;
- u32 cap_offset = MC_MSI_CAP_CTRL_OFFSET;
- u16 msg_ctrl = readw_relaxed(base + cap_offset + PCI_MSI_FLAGS);
-
- msg_ctrl |= PCI_MSI_FLAGS_ENABLE;
- msg_ctrl &= ~PCI_MSI_FLAGS_QMASK;
- msg_ctrl |= MC_MSI_MAX_Q_AVAIL;
- msg_ctrl &= ~PCI_MSI_FLAGS_QSIZE;
- msg_ctrl |= MC_MSI_Q_SIZE;
- msg_ctrl |= PCI_MSI_FLAGS_64BIT;
-
- writew_relaxed(msg_ctrl, base + cap_offset + PCI_MSI_FLAGS);
-
- writel_relaxed(lower_32_bits(msi->vector_phy),
- base + cap_offset + PCI_MSI_ADDRESS_LO);
- writel_relaxed(upper_32_bits(msi->vector_phy),
- base + cap_offset + PCI_MSI_ADDRESS_HI);
-}
-
-static void mc_handle_msi(struct irq_desc *desc)
-{
- struct mc_pcie *port = irq_desc_get_handler_data(desc);
- struct irq_chip *chip = irq_desc_get_chip(desc);
- struct device *dev = port->dev;
- struct mc_msi *msi = &port->msi;
- void __iomem *bridge_base_addr =
- port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
- unsigned long status;
- u32 bit;
- int ret;
-
- chained_irq_enter(chip, desc);
-
- status = readl_relaxed(bridge_base_addr + ISTATUS_LOCAL);
- if (status & PM_MSI_INT_MSI_MASK) {
- writel_relaxed(status & PM_MSI_INT_MSI_MASK, bridge_base_addr + ISTATUS_LOCAL);
- status = readl_relaxed(bridge_base_addr + ISTATUS_MSI);
- for_each_set_bit(bit, &status, msi->num_vectors) {
- ret = generic_handle_domain_irq(msi->dev_domain, bit);
- if (ret)
- dev_err_ratelimited(dev, "bad MSI IRQ %d\n",
- bit);
- }
- }
-
- chained_irq_exit(chip, desc);
-}
-
-static void mc_msi_bottom_irq_ack(struct irq_data *data)
-{
- struct mc_pcie *port = irq_data_get_irq_chip_data(data);
- void __iomem *bridge_base_addr =
- port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
- u32 bitpos = data->hwirq;
-
- writel_relaxed(BIT(bitpos), bridge_base_addr + ISTATUS_MSI);
-}
-
-static void mc_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
-{
- struct mc_pcie *port = irq_data_get_irq_chip_data(data);
- phys_addr_t addr = port->msi.vector_phy;
-
- msg->address_lo = lower_32_bits(addr);
- msg->address_hi = upper_32_bits(addr);
- msg->data = data->hwirq;
-
- dev_dbg(port->dev, "msi#%x address_hi %#x address_lo %#x\n",
- (int)data->hwirq, msg->address_hi, msg->address_lo);
-}
-
-static int mc_msi_set_affinity(struct irq_data *irq_data,
- const struct cpumask *mask, bool force)
-{
- return -EINVAL;
-}
-
-static struct irq_chip mc_msi_bottom_irq_chip = {
- .name = "Microchip MSI",
- .irq_ack = mc_msi_bottom_irq_ack,
- .irq_compose_msi_msg = mc_compose_msi_msg,
- .irq_set_affinity = mc_msi_set_affinity,
-};
-
-static int mc_irq_msi_domain_alloc(struct irq_domain *domain, unsigned int virq,
- unsigned int nr_irqs, void *args)
-{
- struct mc_pcie *port = domain->host_data;
- struct mc_msi *msi = &port->msi;
- void __iomem *bridge_base_addr =
- port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
- unsigned long bit;
- u32 val;
-
- mutex_lock(&msi->lock);
- bit = find_first_zero_bit(msi->used, msi->num_vectors);
- if (bit >= msi->num_vectors) {
- mutex_unlock(&msi->lock);
- return -ENOSPC;
- }
-
- set_bit(bit, msi->used);
-
- irq_domain_set_info(domain, virq, bit, &mc_msi_bottom_irq_chip,
- domain->host_data, handle_edge_irq, NULL, NULL);
-
- /* Enable MSI interrupts */
- val = readl_relaxed(bridge_base_addr + IMASK_LOCAL);
- val |= PM_MSI_INT_MSI_MASK;
- writel_relaxed(val, bridge_base_addr + IMASK_LOCAL);
-
- mutex_unlock(&msi->lock);
-
- return 0;
-}
-
-static void mc_irq_msi_domain_free(struct irq_domain *domain, unsigned int virq,
- unsigned int nr_irqs)
-{
- struct irq_data *d = irq_domain_get_irq_data(domain, virq);
- struct mc_pcie *port = irq_data_get_irq_chip_data(d);
- struct mc_msi *msi = &port->msi;
-
- mutex_lock(&msi->lock);
-
- if (test_bit(d->hwirq, msi->used))
- __clear_bit(d->hwirq, msi->used);
- else
- dev_err(port->dev, "trying to free unused MSI%lu\n", d->hwirq);
-
- mutex_unlock(&msi->lock);
-}
-
-static const struct irq_domain_ops msi_domain_ops = {
- .alloc = mc_irq_msi_domain_alloc,
- .free = mc_irq_msi_domain_free,
-};
-
-static struct irq_chip mc_msi_irq_chip = {
- .name = "Microchip PCIe MSI",
- .irq_ack = irq_chip_ack_parent,
- .irq_mask = pci_msi_mask_irq,
- .irq_unmask = pci_msi_unmask_irq,
-};
-
-static struct msi_domain_info mc_msi_domain_info = {
- .flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
- MSI_FLAG_PCI_MSIX),
- .chip = &mc_msi_irq_chip,
-};
-
-static int mc_allocate_msi_domains(struct mc_pcie *port)
-{
- struct device *dev = port->dev;
- struct fwnode_handle *fwnode = of_node_to_fwnode(dev->of_node);
- struct mc_msi *msi = &port->msi;
-
- mutex_init(&port->msi.lock);
-
- msi->dev_domain = irq_domain_add_linear(NULL, msi->num_vectors,
- &msi_domain_ops, port);
- if (!msi->dev_domain) {
- dev_err(dev, "failed to create IRQ domain\n");
- return -ENOMEM;
- }
-
- msi->msi_domain = pci_msi_create_irq_domain(fwnode, &mc_msi_domain_info,
- msi->dev_domain);
- if (!msi->msi_domain) {
- dev_err(dev, "failed to create MSI domain\n");
- irq_domain_remove(msi->dev_domain);
- return -ENOMEM;
- }
-
- return 0;
-}
-
-static void mc_handle_intx(struct irq_desc *desc)
-{
- struct mc_pcie *port = irq_desc_get_handler_data(desc);
- struct irq_chip *chip = irq_desc_get_chip(desc);
- struct device *dev = port->dev;
- void __iomem *bridge_base_addr =
- port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
- unsigned long status;
- u32 bit;
- int ret;
-
- chained_irq_enter(chip, desc);
-
- status = readl_relaxed(bridge_base_addr + ISTATUS_LOCAL);
- if (status & PM_MSI_INT_INTX_MASK) {
- status &= PM_MSI_INT_INTX_MASK;
- status >>= PM_MSI_INT_INTX_SHIFT;
- for_each_set_bit(bit, &status, PCI_NUM_INTX) {
- ret = generic_handle_domain_irq(port->intx_domain, bit);
- if (ret)
- dev_err_ratelimited(dev, "bad INTx IRQ %d\n",
- bit);
- }
- }
-
- chained_irq_exit(chip, desc);
-}
-
-static void mc_ack_intx_irq(struct irq_data *data)
-{
- struct mc_pcie *port = irq_data_get_irq_chip_data(data);
- void __iomem *bridge_base_addr =
- port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
- u32 mask = BIT(data->hwirq + PM_MSI_INT_INTX_SHIFT);
-
- writel_relaxed(mask, bridge_base_addr + ISTATUS_LOCAL);
-}
-
-static void mc_mask_intx_irq(struct irq_data *data)
-{
- struct mc_pcie *port = irq_data_get_irq_chip_data(data);
- void __iomem *bridge_base_addr =
- port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
- unsigned long flags;
- u32 mask = BIT(data->hwirq + PM_MSI_INT_INTX_SHIFT);
- u32 val;
-
- raw_spin_lock_irqsave(&port->lock, flags);
- val = readl_relaxed(bridge_base_addr + IMASK_LOCAL);
- val &= ~mask;
- writel_relaxed(val, bridge_base_addr + IMASK_LOCAL);
- raw_spin_unlock_irqrestore(&port->lock, flags);
-}
-
-static void mc_unmask_intx_irq(struct irq_data *data)
-{
- struct mc_pcie *port = irq_data_get_irq_chip_data(data);
- void __iomem *bridge_base_addr =
- port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
- unsigned long flags;
- u32 mask = BIT(data->hwirq + PM_MSI_INT_INTX_SHIFT);
- u32 val;
-
- raw_spin_lock_irqsave(&port->lock, flags);
- val = readl_relaxed(bridge_base_addr + IMASK_LOCAL);
- val |= mask;
- writel_relaxed(val, bridge_base_addr + IMASK_LOCAL);
- raw_spin_unlock_irqrestore(&port->lock, flags);
-}
-
-static struct irq_chip mc_intx_irq_chip = {
- .name = "Microchip PCIe INTx",
- .irq_ack = mc_ack_intx_irq,
- .irq_mask = mc_mask_intx_irq,
- .irq_unmask = mc_unmask_intx_irq,
-};
-
-static int mc_pcie_intx_map(struct irq_domain *domain, unsigned int irq,
- irq_hw_number_t hwirq)
-{
- irq_set_chip_and_handler(irq, &mc_intx_irq_chip, handle_level_irq);
- irq_set_chip_data(irq, domain->host_data);
-
- return 0;
-}
-
-static const struct irq_domain_ops intx_domain_ops = {
- .map = mc_pcie_intx_map,
-};
-
static inline u32 reg_to_event(u32 reg, struct event_map field)
{
return (reg & field.reg_mask) ? BIT(field.event_bit) : 0;
@@ -704,11 +340,10 @@ static u32 local_events(void __iomem *addr)
return val;
}
-static u32 get_events(struct mc_pcie *port)
+static u32 get_events(struct plda_pcie *port)
{
- void __iomem *bridge_base_addr =
- port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
- void __iomem *ctrl_base_addr = port->axi_base_addr + MC_PCIE_CTRL_ADDR;
+ void __iomem *bridge_base_addr = port->bridge_addr;
+ void __iomem *ctrl_base_addr = port->bridge_addr + MC_PCIE_CTRL_ADDR_OFFSET;
u32 events = 0;
events |= pcie_events(ctrl_base_addr + PCIE_EVENT_INT);
@@ -721,7 +356,7 @@ static u32 get_events(struct mc_pcie *port)
static irqreturn_t mc_event_handler(int irq, void *dev_id)
{
- struct mc_pcie *port = dev_id;
+ struct plda_pcie *port = dev_id;
struct device *dev = port->dev;
struct irq_data *data;
@@ -735,31 +370,14 @@ static irqreturn_t mc_event_handler(int irq, void *dev_id)
return IRQ_HANDLED;
}
-static void mc_handle_event(struct irq_desc *desc)
-{
- struct mc_pcie *port = irq_desc_get_handler_data(desc);
- unsigned long events;
- u32 bit;
- struct irq_chip *chip = irq_desc_get_chip(desc);
-
- chained_irq_enter(chip, desc);
-
- events = get_events(port);
-
- for_each_set_bit(bit, &events, NUM_EVENTS)
- generic_handle_domain_irq(port->event_domain, bit);
-
- chained_irq_exit(chip, desc);
-}
-
static void mc_ack_event_irq(struct irq_data *data)
{
- struct mc_pcie *port = irq_data_get_irq_chip_data(data);
+ struct plda_pcie *port = irq_data_get_irq_chip_data(data);
u32 event = data->hwirq;
void __iomem *addr;
u32 mask;
- addr = port->axi_base_addr + event_descs[event].base +
+ addr = port->bridge_addr + event_descs[event].base +
event_descs[event].offset;
mask = event_descs[event].mask;
mask |= event_descs[event].enb_mask;
@@ -769,13 +387,13 @@ static void mc_ack_event_irq(struct irq_data *data)
static void mc_mask_event_irq(struct irq_data *data)
{
- struct mc_pcie *port = irq_data_get_irq_chip_data(data);
+ struct plda_pcie *port = irq_data_get_irq_chip_data(data);
u32 event = data->hwirq;
void __iomem *addr;
u32 mask;
u32 val;
- addr = port->axi_base_addr + event_descs[event].base +
+ addr = port->bridge_addr + event_descs[event].base +
event_descs[event].mask_offset;
mask = event_descs[event].mask;
if (event_descs[event].enb_mask) {
@@ -799,13 +417,13 @@ static void mc_mask_event_irq(struct irq_data *data)
static void mc_unmask_event_irq(struct irq_data *data)
{
- struct mc_pcie *port = irq_data_get_irq_chip_data(data);
+ struct plda_pcie *port = irq_data_get_irq_chip_data(data);
u32 event = data->hwirq;
void __iomem *addr;
u32 mask;
u32 val;
- addr = port->axi_base_addr + event_descs[event].base +
+ addr = port->bridge_addr + event_descs[event].base +
event_descs[event].mask_offset;
mask = event_descs[event].mask;
@@ -887,123 +505,42 @@ static int mc_pcie_init_clks(struct device *dev)
return 0;
}
-static int mc_pcie_init_irq_domains(struct mc_pcie *port)
-{
- struct device *dev = port->dev;
- struct device_node *node = dev->of_node;
- struct device_node *pcie_intc_node;
-
- /* Setup INTx */
- pcie_intc_node = of_get_next_child(node, NULL);
- if (!pcie_intc_node) {
- dev_err(dev, "failed to find PCIe Intc node\n");
- return -EINVAL;
- }
-
- port->event_domain = irq_domain_add_linear(pcie_intc_node, NUM_EVENTS,
- &event_domain_ops, port);
- if (!port->event_domain) {
- dev_err(dev, "failed to get event domain\n");
- of_node_put(pcie_intc_node);
- return -ENOMEM;
- }
-
- irq_domain_update_bus_token(port->event_domain, DOMAIN_BUS_NEXUS);
-
- port->intx_domain = irq_domain_add_linear(pcie_intc_node, PCI_NUM_INTX,
- &intx_domain_ops, port);
- if (!port->intx_domain) {
- dev_err(dev, "failed to get an INTx IRQ domain\n");
- of_node_put(pcie_intc_node);
- return -ENOMEM;
- }
-
- irq_domain_update_bus_token(port->intx_domain, DOMAIN_BUS_WIRED);
-
- of_node_put(pcie_intc_node);
- raw_spin_lock_init(&port->lock);
-
- return mc_allocate_msi_domains(port);
-}
-
-static void mc_pcie_setup_window(void __iomem *bridge_base_addr, u32 index,
- phys_addr_t axi_addr, phys_addr_t pci_addr,
- size_t size)
-{
- u32 atr_sz = ilog2(size) - 1;
- u32 val;
-
- if (index == 0)
- val = PCIE_CONFIG_INTERFACE;
- else
- val = PCIE_TX_RX_INTERFACE;
-
- writel(val, bridge_base_addr + (index * ATR_ENTRY_SIZE) +
- ATR0_AXI4_SLV0_TRSL_PARAM);
-
- val = lower_32_bits(axi_addr) | (atr_sz << ATR_SIZE_SHIFT) |
- ATR_IMPL_ENABLE;
- writel(val, bridge_base_addr + (index * ATR_ENTRY_SIZE) +
- ATR0_AXI4_SLV0_SRCADDR_PARAM);
-
- val = upper_32_bits(axi_addr);
- writel(val, bridge_base_addr + (index * ATR_ENTRY_SIZE) +
- ATR0_AXI4_SLV0_SRC_ADDR);
-
- val = lower_32_bits(pci_addr);
- writel(val, bridge_base_addr + (index * ATR_ENTRY_SIZE) +
- ATR0_AXI4_SLV0_TRSL_ADDR_LSB);
-
- val = upper_32_bits(pci_addr);
- writel(val, bridge_base_addr + (index * ATR_ENTRY_SIZE) +
- ATR0_AXI4_SLV0_TRSL_ADDR_UDW);
-
- val = readl(bridge_base_addr + ATR0_PCIE_WIN0_SRCADDR_PARAM);
- val |= (ATR0_PCIE_ATR_SIZE << ATR0_PCIE_ATR_SIZE_SHIFT);
- writel(val, bridge_base_addr + ATR0_PCIE_WIN0_SRCADDR_PARAM);
- writel(0, bridge_base_addr + ATR0_PCIE_WIN0_SRC_ADDR);
-}
+static const struct plda_pcie_ops pcie_ops = {
+ .get_events = get_events,
+};
-static int mc_pcie_setup_windows(struct platform_device *pdev,
- struct mc_pcie *port)
+static int mc_request_evt_irq(struct plda_pcie *plda, int event_irq,
+ int evt)
{
- void __iomem *bridge_base_addr =
- port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
- struct pci_host_bridge *bridge = platform_get_drvdata(pdev);
- struct resource_entry *entry;
- u64 pci_addr;
- u32 index = 1;
-
- resource_list_for_each_entry(entry, &bridge->windows) {
- if (resource_type(entry->res) == IORESOURCE_MEM) {
- pci_addr = entry->res->start - entry->offset;
- mc_pcie_setup_window(bridge_base_addr, index,
- entry->res->start, pci_addr,
- resource_size(entry->res));
- index++;
- }
- }
+ struct device *dev = plda->dev;
- return 0;
+ return devm_request_irq(dev, event_irq, mc_event_handler,
+ 0, event_cause[evt].sym, plda);
}
static int mc_platform_init(struct pci_config_window *cfg)
{
struct device *dev = cfg->parent;
struct platform_device *pdev = to_platform_device(dev);
+ struct pci_host_bridge *bridge = platform_get_drvdata(pdev);
struct mc_pcie *port;
+ struct plda_pcie *plda;
void __iomem *bridge_base_addr;
void __iomem *ctrl_base_addr;
+ struct plda_evt evt = {&event_domain_ops, mc_request_evt_irq,
+ EVENT_LOCAL_PM_MSI_INT_INTX,
+ EVENT_LOCAL_PM_MSI_INT_MSI};
int ret;
- int irq;
- int i, intx_irq, msi_irq, event_irq;
u32 val;
- int err;
port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL);
if (!port)
return -ENOMEM;
- port->dev = dev;
+
+ plda = &port->plda;
+ plda->dev = dev;
+ plda->ops = &pcie_ops;
+ plda->num_events = NUM_EVENTS;
ret = mc_pcie_init_clks(dev);
if (ret) {
@@ -1017,57 +554,12 @@ static int mc_platform_init(struct pci_config_window *cfg)
bridge_base_addr = port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
ctrl_base_addr = port->axi_base_addr + MC_PCIE_CTRL_ADDR;
+ plda->bridge_addr = bridge_base_addr;
- port->msi.vector_phy = MSI_ADDR;
- port->msi.num_vectors = MC_NUM_MSI_IRQS;
- ret = mc_pcie_init_irq_domains(port);
- if (ret) {
- dev_err(dev, "failed creating IRQ domains\n");
- return ret;
- }
-
- irq = platform_get_irq(pdev, 0);
- if (irq < 0)
- return -ENODEV;
-
- for (i = 0; i < NUM_EVENTS; i++) {
- event_irq = irq_create_mapping(port->event_domain, i);
- if (!event_irq) {
- dev_err(dev, "failed to map hwirq %d\n", i);
- return -ENXIO;
- }
-
- err = devm_request_irq(dev, event_irq, mc_event_handler,
- 0, event_cause[i].sym, port);
- if (err) {
- dev_err(dev, "failed to request IRQ %d\n", event_irq);
- return err;
- }
- }
-
- intx_irq = irq_create_mapping(port->event_domain,
- EVENT_LOCAL_PM_MSI_INT_INTX);
- if (!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, mc_handle_intx, port);
-
- msi_irq = irq_create_mapping(port->event_domain,
- EVENT_LOCAL_PM_MSI_INT_MSI);
- if (!msi_irq)
- return -ENXIO;
-
- /* Plug the MSI chained handler */
- irq_set_chained_handler_and_data(msi_irq, mc_handle_msi, port);
-
- /* Plug the main event chained handler */
- irq_set_chained_handler_and_data(irq, mc_handle_event, port);
-
+ plda_set_default_msi(&plda->msi);
+ plda_pcie_init_irq(plda, pdev, &evt);
/* Hardware doesn't setup MSI by default */
- mc_pcie_enable_msi(port, cfg->win);
+ plda_pcie_enable_msi(plda);
val = readl_relaxed(bridge_base_addr + IMASK_LOCAL);
val |= PM_MSI_INT_INTX_MASK;
@@ -1100,10 +592,10 @@ static int mc_platform_init(struct pci_config_window *cfg)
writel_relaxed(GENMASK(31, 0), bridge_base_addr + ISTATUS_HOST);
/* Configure Address Translation Table 0 for PCIe config space */
- mc_pcie_setup_window(bridge_base_addr, 0, cfg->res.start & 0xffffffff,
- cfg->res.start, resource_size(&cfg->res));
+ plda_pcie_setup_window(bridge_base_addr, 0, cfg->res.start & 0xffffffff,
+ cfg->res.start, resource_size(&cfg->res));
- return mc_pcie_setup_windows(pdev, port);
+ return plda_pcie_setup_iomems(&port->plda, bridge);
}
static const struct pci_ecam_ops mc_ecam_ops = {
--
2.17.1
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