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SubjectRE: [PATCHv9 04/12] PCI: mobiveil: Modularize the Mobiveil PCIe Host Bridge IP driver
Date
Hi Andrew,

Thanks a lot for your review!

B.R,
Zhiqiang

> -----Original Message-----
> From: Andrew Murray <andrew.murray@arm.com>
> Sent: 2020年1月13日 19:06
> To: Z.q. Hou <zhiqiang.hou@nxp.com>
> Cc: linux-pci@vger.kernel.org; linux-arm-kernel@lists.infradead.org;
> devicetree@vger.kernel.org; linux-kernel@vger.kernel.org;
> bhelgaas@google.com; robh+dt@kernel.org; arnd@arndb.de;
> mark.rutland@arm.com; l.subrahmanya@mobiveil.co.in;
> shawnguo@kernel.org; m.karthikeyan@mobiveil.co.in; Leo Li
> <leoyang.li@nxp.com>; lorenzo.pieralisi@arm.com;
> catalin.marinas@arm.com; will.deacon@arm.com; Mingkai Hu
> <mingkai.hu@nxp.com>; M.h. Lian <minghuan.lian@nxp.com>; Xiaowei Bao
> <xiaowei.bao@nxp.com>
> Subject: Re: [PATCHv9 04/12] PCI: mobiveil: Modularize the Mobiveil PCIe
> Host Bridge IP driver
>
> On Wed, Nov 20, 2019 at 03:45:43AM +0000, Z.q. Hou wrote:
> > From: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
> >
> > Modularize the Mobiveil PCIe host driver according to the abstraction
> > of Root Complex and Endpoint and move it into a new directory.
> >
> > Split the RC related routines into pcie-mobiveil-host.c, and common
> > routines into pcie-mobiveil.c, move the macro definitions and function
> > declarations into pcie-mobiveil.h, and the Mobiveil platform reference
> > code into pcie-mobiveil-plat.c. So that it is easy to reuse the
> > extracted routines to add a new host driver, which integrated Mobiveil
> > PCIe GPEX IP.
> >
> > Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
>
> Reviewed-by: Andrew Murray <andrew.murray@arm.com>
>
> > ---
> > V9:
> > - New patch splited from the #1 of V8 patches to make it easy to review.
> >
> > MAINTAINERS | 2 +-
> > drivers/pci/controller/Kconfig | 11 +-
> > drivers/pci/controller/Makefile | 2 +-
> > drivers/pci/controller/mobiveil/Kconfig | 24 ++
> > drivers/pci/controller/mobiveil/Makefile | 4 +
> > .../pcie-mobiveil-host.c} | 398 +-----------------
> > .../controller/mobiveil/pcie-mobiveil-plat.c | 60 +++
> > .../pci/controller/mobiveil/pcie-mobiveil.c | 227 ++++++++++
> > .../pci/controller/mobiveil/pcie-mobiveil.h | 178 ++++++++
> > 9 files changed, 497 insertions(+), 409 deletions(-) create mode
> > 100644 drivers/pci/controller/mobiveil/Kconfig
> > create mode 100644 drivers/pci/controller/mobiveil/Makefile
> > rename drivers/pci/controller/{pcie-mobiveil.c =>
> > mobiveil/pcie-mobiveil-host.c} (61%) create mode 100644
> > drivers/pci/controller/mobiveil/pcie-mobiveil-plat.c
> > create mode 100644 drivers/pci/controller/mobiveil/pcie-mobiveil.c
> > create mode 100644 drivers/pci/controller/mobiveil/pcie-mobiveil.h
> >
> > diff --git a/MAINTAINERS b/MAINTAINERS index
> > 3f7f8cdbc471..a4ad99619e53 100644
> > --- a/MAINTAINERS
> > +++ b/MAINTAINERS
> > @@ -12612,7 +12612,7 @@ M: Hou Zhiqiang
> <Zhiqiang.Hou@nxp.com>
> > L: linux-pci@vger.kernel.org
> > S: Supported
> > F: Documentation/devicetree/bindings/pci/mobiveil-pcie.txt
> > -F: drivers/pci/controller/pcie-mobiveil.c
> > +F: drivers/pci/controller/mobiveil/pcie-mobiveil*
> >
> > PCI DRIVER FOR MVEBU (Marvell Armada 370 and Armada XP SOC
> support)
> > M: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
> > diff --git a/drivers/pci/controller/Kconfig
> > b/drivers/pci/controller/Kconfig index f5de9119e8d3..74fd332755ae
> > 100644
> > --- a/drivers/pci/controller/Kconfig
> > +++ b/drivers/pci/controller/Kconfig
> > @@ -241,16 +241,6 @@ config PCIE_MEDIATEK
> > Say Y here if you want to enable PCIe controller support on
> > MediaTek SoCs.
> >
> > -config PCIE_MOBIVEIL
> > - bool "Mobiveil AXI PCIe controller"
> > - depends on ARCH_ZYNQMP || COMPILE_TEST
> > - depends on OF
> > - depends on PCI_MSI_IRQ_DOMAIN
> > - help
> > - Say Y here if you want to enable support for the Mobiveil AXI PCIe
> > - Soft IP. It has up to 8 outbound and inbound windows
> > - for address translation and it is a PCIe Gen4 IP.
> > -
> > config PCIE_TANGO_SMP8759
> > bool "Tango SMP8759 PCIe controller (DANGEROUS)"
> > depends on ARCH_TANGO && PCI_MSI && OF @@ -289,4 +279,5 @@
> config
> > PCI_HYPERV_INTERFACE
> > have a common interface with the Hyper-V PCI frontend driver.
> >
> > source "drivers/pci/controller/dwc/Kconfig"
> > +source "drivers/pci/controller/mobiveil/Kconfig"
> > endmenu
> > diff --git a/drivers/pci/controller/Makefile
> > b/drivers/pci/controller/Makefile index a2a22c9d91af..44414cfd45ea
> > 100644
> > --- a/drivers/pci/controller/Makefile
> > +++ b/drivers/pci/controller/Makefile
> > @@ -27,11 +27,11 @@ obj-$(CONFIG_PCIE_ROCKCHIP) += pcie-rockchip.o
> > obj-$(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-$(CONFIG_PCIE_MOBIVEIL) += pcie-mobiveil.o
> > obj-$(CONFIG_PCIE_TANGO_SMP8759) += pcie-tango.o
> > obj-$(CONFIG_VMD) += vmd.o
> > # pcie-hisi.o quirks are needed even without CONFIG_PCIE_DW
> > obj-y += dwc/
> > +obj-y += mobiveil/
> >
> >
> > # The following drivers are for devices that use the generic ACPI
> > diff --git a/drivers/pci/controller/mobiveil/Kconfig
> > b/drivers/pci/controller/mobiveil/Kconfig
> > new file mode 100644
> > index 000000000000..64343c07bfed
> > --- /dev/null
> > +++ b/drivers/pci/controller/mobiveil/Kconfig
> > @@ -0,0 +1,24 @@
> > +# SPDX-License-Identifier: GPL-2.0
> > +
> > +menu "Mobiveil PCIe Core Support"
> > + depends on PCI
> > +
> > +config PCIE_MOBIVEIL
> > + bool
> > +
> > +config PCIE_MOBIVEIL_HOST
> > + bool
> > + depends on PCI_MSI_IRQ_DOMAIN
> > + select PCIE_MOBIVEIL
> > +
> > +config PCIE_MOBIVEIL_PLAT
> > + bool "Mobiveil AXI PCIe controller"
> > + depends on ARCH_ZYNQMP || COMPILE_TEST
> > + depends on OF
> > + select PCIE_MOBIVEIL_HOST
> > + help
> > + Say Y here if you want to enable support for the Mobiveil AXI PCIe
> > + Soft IP. It has up to 8 outbound and inbound windows
> > + for address translation and it is a PCIe Gen4 IP.
> > +
> > +endmenu
> > diff --git a/drivers/pci/controller/mobiveil/Makefile
> > b/drivers/pci/controller/mobiveil/Makefile
> > new file mode 100644
> > index 000000000000..9fb6d1c6504d
> > --- /dev/null
> > +++ b/drivers/pci/controller/mobiveil/Makefile
> > @@ -0,0 +1,4 @@
> > +# SPDX-License-Identifier: GPL-2.0
> > +obj-$(CONFIG_PCIE_MOBIVEIL) += pcie-mobiveil.o
> > +obj-$(CONFIG_PCIE_MOBIVEIL_HOST) += pcie-mobiveil-host.o
> > +obj-$(CONFIG_PCIE_MOBIVEIL_PLAT) += pcie-mobiveil-plat.o
> > diff --git a/drivers/pci/controller/pcie-mobiveil.c
> > b/drivers/pci/controller/mobiveil/pcie-mobiveil-host.c
> > similarity index 61%
> > rename from drivers/pci/controller/pcie-mobiveil.c
> > rename to drivers/pci/controller/mobiveil/pcie-mobiveil-host.c
> > index 512b27a0536e..2cc424e78d33 100644
> > --- a/drivers/pci/controller/pcie-mobiveil.c
> > +++ b/drivers/pci/controller/mobiveil/pcie-mobiveil-host.c
> > @@ -9,7 +9,6 @@
> > * Recode: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
> > */
> >
> > -#include <linux/delay.h>
> > #include <linux/init.h>
> > #include <linux/interrupt.h>
> > #include <linux/irq.h>
> > @@ -26,265 +25,7 @@
> > #include <linux/platform_device.h>
> > #include <linux/slab.h>
> >
> > -#include "../pci.h"
> > -
> > -/* register offsets and bit positions */
> > -
> > -/*
> > - * translation tables are grouped into windows, each window registers
> > are
> > - * grouped into blocks of 4 or 16 registers each
> > - */
> > -#define PAB_REG_BLOCK_SIZE 16
> > -#define PAB_EXT_REG_BLOCK_SIZE 4
> > -
> > -#define PAB_REG_ADDR(offset, win) \
> > - (offset + (win * PAB_REG_BLOCK_SIZE))
> > -#define PAB_EXT_REG_ADDR(offset, win) \
> > - (offset + (win * PAB_EXT_REG_BLOCK_SIZE))
> > -
> > -#define LTSSM_STATUS 0x0404
> > -#define LTSSM_STATUS_L0_MASK 0x3f
> > -#define LTSSM_STATUS_L0 0x2d
> > -
> > -#define PAB_CTRL 0x0808
> > -#define AMBA_PIO_ENABLE_SHIFT 0
> > -#define PEX_PIO_ENABLE_SHIFT 1
> > -#define PAGE_SEL_SHIFT 13
> > -#define PAGE_SEL_MASK 0x3f
> > -#define PAGE_LO_MASK 0x3ff
> > -#define PAGE_SEL_OFFSET_SHIFT 10
> > -
> > -#define PAB_AXI_PIO_CTRL 0x0840
> > -#define APIO_EN_MASK 0xf
> > -
> > -#define PAB_PEX_PIO_CTRL 0x08c0
> > -#define PIO_ENABLE_SHIFT 0
> > -
> > -#define PAB_INTP_AMBA_MISC_ENB 0x0b0c
> > -#define PAB_INTP_AMBA_MISC_STAT 0x0b1c
> > -#define PAB_INTP_INTX_MASK 0x01e0
> > -#define PAB_INTP_MSI_MASK 0x8
> > -
> > -#define PAB_AXI_AMAP_CTRL(win) PAB_REG_ADDR(0x0ba0, win)
> > -#define WIN_ENABLE_SHIFT 0
> > -#define WIN_TYPE_SHIFT 1
> > -#define WIN_TYPE_MASK 0x3
> > -#define WIN_SIZE_MASK 0xfffffc00
> > -
> > -#define PAB_EXT_AXI_AMAP_SIZE(win) PAB_EXT_REG_ADDR(0xbaf0,
> win)
> > -
> > -#define PAB_EXT_AXI_AMAP_AXI_WIN(win)
> PAB_EXT_REG_ADDR(0x80a0, win)
> > -#define PAB_AXI_AMAP_AXI_WIN(win) PAB_REG_ADDR(0x0ba4, win)
> > -#define AXI_WINDOW_ALIGN_MASK 3
> > -
> > -#define PAB_AXI_AMAP_PEX_WIN_L(win) PAB_REG_ADDR(0x0ba8,
> win)
> > -#define PAB_BUS_SHIFT 24
> > -#define PAB_DEVICE_SHIFT 19
> > -#define PAB_FUNCTION_SHIFT 16
> > -
> > -#define PAB_AXI_AMAP_PEX_WIN_H(win) PAB_REG_ADDR(0x0bac,
> win)
> > -#define PAB_INTP_AXI_PIO_CLASS 0x474
> > -
> > -#define PAB_PEX_AMAP_CTRL(win) PAB_REG_ADDR(0x4ba0, win)
> > -#define AMAP_CTRL_EN_SHIFT 0
> > -#define AMAP_CTRL_TYPE_SHIFT 1
> > -#define AMAP_CTRL_TYPE_MASK 3
> > -
> > -#define PAB_EXT_PEX_AMAP_SIZEN(win) PAB_EXT_REG_ADDR(0xbef0,
> win)
> > -#define PAB_EXT_PEX_AMAP_AXI_WIN(win)
> PAB_EXT_REG_ADDR(0xb4a0, win)
> > -#define PAB_PEX_AMAP_AXI_WIN(win) PAB_REG_ADDR(0x4ba4, win)
> > -#define PAB_PEX_AMAP_PEX_WIN_L(win) PAB_REG_ADDR(0x4ba8,
> win)
> > -#define PAB_PEX_AMAP_PEX_WIN_H(win) PAB_REG_ADDR(0x4bac,
> win)
> > -
> > -/* starting offset of INTX bits in status register */
> > -#define PAB_INTX_START 5
> > -
> > -/* supported number of MSI interrupts */
> > -#define PCI_NUM_MSI 16
> > -
> > -/* MSI registers */
> > -#define MSI_BASE_LO_OFFSET 0x04
> > -#define MSI_BASE_HI_OFFSET 0x08
> > -#define MSI_SIZE_OFFSET 0x0c
> > -#define MSI_ENABLE_OFFSET 0x14
> > -#define MSI_STATUS_OFFSET 0x18
> > -#define MSI_DATA_OFFSET 0x20
> > -#define MSI_ADDR_L_OFFSET 0x24
> > -#define MSI_ADDR_H_OFFSET 0x28
> > -
> > -/* outbound and inbound window definitions */
> > -#define WIN_NUM_0 0
> > -#define WIN_NUM_1 1
> > -#define CFG_WINDOW_TYPE 0
> > -#define IO_WINDOW_TYPE 1
> > -#define MEM_WINDOW_TYPE 2
> > -#define IB_WIN_SIZE ((u64)256 * 1024 * 1024 * 1024)
> > -#define MAX_PIO_WINDOWS 8
> > -
> > -/* Parameters for the waiting for link up routine */
> > -#define LINK_WAIT_MAX_RETRIES 10
> > -#define LINK_WAIT_MIN 90000
> > -#define LINK_WAIT_MAX 100000
> > -
> > -#define PAGED_ADDR_BNDRY 0xc00
> > -#define OFFSET_TO_PAGE_ADDR(off) \
> > - ((off & PAGE_LO_MASK) | PAGED_ADDR_BNDRY)
> > -#define OFFSET_TO_PAGE_IDX(off) \
> > - ((off >> PAGE_SEL_OFFSET_SHIFT) & PAGE_SEL_MASK)
> > -
> > -struct mobiveil_msi { /* MSI information */
> > - struct mutex lock; /* protect bitmap variable */
> > - struct irq_domain *msi_domain;
> > - struct irq_domain *dev_domain;
> > - phys_addr_t msi_pages_phys;
> > - int num_of_vectors;
> > - DECLARE_BITMAP(msi_irq_in_use, PCI_NUM_MSI);
> > -};
> > -
> > -struct root_port {
> > - char root_bus_nr;
> > - void __iomem *config_axi_slave_base; /* endpoint config base */
> > - struct resource *ob_io_res;
> > - int irq;
> > - raw_spinlock_t intx_mask_lock;
> > - struct irq_domain *intx_domain;
> > - struct mobiveil_msi msi;
> > - struct pci_host_bridge *bridge;
> > -};
> > -
> > -struct mobiveil_pcie {
> > - struct platform_device *pdev;
> > - void __iomem *csr_axi_slave_base; /* root port config base */
> > - void __iomem *apb_csr_base; /* MSI register base */
> > - phys_addr_t pcie_reg_base; /* Physical PCIe Controller Base */
> > - int apio_wins;
> > - int ppio_wins;
> > - int ob_wins_configured; /* configured outbound windows */
> > - int ib_wins_configured; /* configured inbound windows */
> > - struct root_port rp;
> > -};
> > -
> > -/*
> > - * mobiveil_pcie_sel_page - routine to access paged register
> > - *
> > - * Registers whose address greater than PAGED_ADDR_BNDRY (0xc00) are
> > paged,
> > - * for this scheme to work extracted higher 6 bits of the offset will
> > be
> > - * written to pg_sel field of PAB_CTRL register and rest of the lower
> > 10
> > - * bits enabled with PAGED_ADDR_BNDRY are used as offset of the
> register.
> > - */
> > -static void mobiveil_pcie_sel_page(struct mobiveil_pcie *pcie, u8
> > pg_idx) -{
> > - u32 val;
> > -
> > - val = readl(pcie->csr_axi_slave_base + PAB_CTRL);
> > - val &= ~(PAGE_SEL_MASK << PAGE_SEL_SHIFT);
> > - val |= (pg_idx & PAGE_SEL_MASK) << PAGE_SEL_SHIFT;
> > -
> > - writel(val, pcie->csr_axi_slave_base + PAB_CTRL);
> > -}
> > -
> > -static void *mobiveil_pcie_comp_addr(struct mobiveil_pcie *pcie, u32
> > off) -{
> > - if (off < PAGED_ADDR_BNDRY) {
> > - /* For directly accessed registers, clear the pg_sel field */
> > - mobiveil_pcie_sel_page(pcie, 0);
> > - return pcie->csr_axi_slave_base + off;
> > - }
> > -
> > - mobiveil_pcie_sel_page(pcie, OFFSET_TO_PAGE_IDX(off));
> > - return pcie->csr_axi_slave_base + OFFSET_TO_PAGE_ADDR(off);
> > -}
> > -
> > -static int mobiveil_pcie_read(void __iomem *addr, int size, u32 *val)
> > -{
> > - if ((uintptr_t)addr & (size - 1)) {
> > - *val = 0;
> > - return PCIBIOS_BAD_REGISTER_NUMBER;
> > - }
> > -
> > - switch (size) {
> > - case 4:
> > - *val = readl(addr);
> > - break;
> > - case 2:
> > - *val = readw(addr);
> > - break;
> > - case 1:
> > - *val = readb(addr);
> > - break;
> > - default:
> > - *val = 0;
> > - return PCIBIOS_BAD_REGISTER_NUMBER;
> > - }
> > -
> > - return PCIBIOS_SUCCESSFUL;
> > -}
> > -
> > -static int mobiveil_pcie_write(void __iomem *addr, int size, u32 val)
> > -{
> > - if ((uintptr_t)addr & (size - 1))
> > - return PCIBIOS_BAD_REGISTER_NUMBER;
> > -
> > - switch (size) {
> > - case 4:
> > - writel(val, addr);
> > - break;
> > - case 2:
> > - writew(val, addr);
> > - break;
> > - case 1:
> > - writeb(val, addr);
> > - break;
> > - default:
> > - return PCIBIOS_BAD_REGISTER_NUMBER;
> > - }
> > -
> > - return PCIBIOS_SUCCESSFUL;
> > -}
> > -
> > -static u32 mobiveil_csr_read(struct mobiveil_pcie *pcie, u32 off,
> > size_t size) -{
> > - void *addr;
> > - u32 val;
> > - int ret;
> > -
> > - addr = mobiveil_pcie_comp_addr(pcie, off);
> > -
> > - ret = mobiveil_pcie_read(addr, size, &val);
> > - if (ret)
> > - dev_err(&pcie->pdev->dev, "read CSR address failed\n");
> > -
> > - return val;
> > -}
> > -
> > -static void mobiveil_csr_write(struct mobiveil_pcie *pcie, u32 val, u32 off,
> > - size_t size)
> > -{
> > - void *addr;
> > - int ret;
> > -
> > - addr = mobiveil_pcie_comp_addr(pcie, off);
> > -
> > - ret = mobiveil_pcie_write(addr, size, val);
> > - if (ret)
> > - dev_err(&pcie->pdev->dev, "write CSR address failed\n");
> > -}
> > -
> > -static u32 mobiveil_csr_readl(struct mobiveil_pcie *pcie, u32 off) -{
> > - return mobiveil_csr_read(pcie, off, 0x4);
> > -}
> > -
> > -static void mobiveil_csr_writel(struct mobiveil_pcie *pcie, u32 val,
> > u32 off) -{
> > - mobiveil_csr_write(pcie, val, off, 0x4);
> > -}
> > -
> > -static bool mobiveil_pcie_link_up(struct mobiveil_pcie *pcie) -{
> > - return (mobiveil_csr_readl(pcie, LTSSM_STATUS) &
> > - LTSSM_STATUS_L0_MASK) == LTSSM_STATUS_L0;
> > -}
> > +#include "pcie-mobiveil.h"
> >
> > static bool mobiveil_pcie_valid_device(struct pci_bus *bus, unsigned
> > int devfn) { @@ -464,103 +205,6 @@ static int
> > mobiveil_pcie_parse_dt(struct mobiveil_pcie *pcie)
> > return 0;
> > }
> >
> > -static void program_ib_windows(struct mobiveil_pcie *pcie, int win_num,
> > - u64 cpu_addr, u64 pci_addr, u32 type, u64 size)
> > -{
> > - u32 value;
> > - u64 size64 = ~(size - 1);
> > -
> > - if (win_num >= pcie->ppio_wins) {
> > - dev_err(&pcie->pdev->dev,
> > - "ERROR: max inbound windows reached !\n");
> > - return;
> > - }
> > -
> > - value = mobiveil_csr_readl(pcie, PAB_PEX_AMAP_CTRL(win_num));
> > - value &= ~(AMAP_CTRL_TYPE_MASK << AMAP_CTRL_TYPE_SHIFT |
> WIN_SIZE_MASK);
> > - value |= type << AMAP_CTRL_TYPE_SHIFT | 1 <<
> AMAP_CTRL_EN_SHIFT |
> > - (lower_32_bits(size64) & WIN_SIZE_MASK);
> > - mobiveil_csr_writel(pcie, value, PAB_PEX_AMAP_CTRL(win_num));
> > -
> > - mobiveil_csr_writel(pcie, upper_32_bits(size64),
> > - PAB_EXT_PEX_AMAP_SIZEN(win_num));
> > -
> > - mobiveil_csr_writel(pcie, lower_32_bits(cpu_addr),
> > - PAB_PEX_AMAP_AXI_WIN(win_num));
> > - mobiveil_csr_writel(pcie, upper_32_bits(cpu_addr),
> > - PAB_EXT_PEX_AMAP_AXI_WIN(win_num));
> > -
> > - mobiveil_csr_writel(pcie, lower_32_bits(pci_addr),
> > - PAB_PEX_AMAP_PEX_WIN_L(win_num));
> > - mobiveil_csr_writel(pcie, upper_32_bits(pci_addr),
> > - PAB_PEX_AMAP_PEX_WIN_H(win_num));
> > -
> > - pcie->ib_wins_configured++;
> > -}
> > -
> > -/*
> > - * routine to program the outbound windows
> > - */
> > -static void program_ob_windows(struct mobiveil_pcie *pcie, int win_num,
> > - u64 cpu_addr, u64 pci_addr, u32 type, u64 size)
> > -{
> > - u32 value;
> > - u64 size64 = ~(size - 1);
> > -
> > - if (win_num >= pcie->apio_wins) {
> > - dev_err(&pcie->pdev->dev,
> > - "ERROR: max outbound windows reached !\n");
> > - return;
> > - }
> > -
> > - /*
> > - * program Enable Bit to 1, Type Bit to (00) base 2, AXI Window Size Bit
> > - * to 4 KB in PAB_AXI_AMAP_CTRL register
> > - */
> > - value = mobiveil_csr_readl(pcie, PAB_AXI_AMAP_CTRL(win_num));
> > - value &= ~(WIN_TYPE_MASK << WIN_TYPE_SHIFT | WIN_SIZE_MASK);
> > - value |= 1 << WIN_ENABLE_SHIFT | type << WIN_TYPE_SHIFT |
> > - (lower_32_bits(size64) & WIN_SIZE_MASK);
> > - mobiveil_csr_writel(pcie, value, PAB_AXI_AMAP_CTRL(win_num));
> > -
> > - mobiveil_csr_writel(pcie, upper_32_bits(size64),
> > - PAB_EXT_AXI_AMAP_SIZE(win_num));
> > -
> > - /*
> > - * program AXI window base with appropriate value in
> > - * PAB_AXI_AMAP_AXI_WIN0 register
> > - */
> > - mobiveil_csr_writel(pcie,
> > - lower_32_bits(cpu_addr) &
> (~AXI_WINDOW_ALIGN_MASK),
> > - PAB_AXI_AMAP_AXI_WIN(win_num));
> > - mobiveil_csr_writel(pcie, upper_32_bits(cpu_addr),
> > - PAB_EXT_AXI_AMAP_AXI_WIN(win_num));
> > -
> > - mobiveil_csr_writel(pcie, lower_32_bits(pci_addr),
> > - PAB_AXI_AMAP_PEX_WIN_L(win_num));
> > - mobiveil_csr_writel(pcie, upper_32_bits(pci_addr),
> > - PAB_AXI_AMAP_PEX_WIN_H(win_num));
> > -
> > - pcie->ob_wins_configured++;
> > -}
> > -
> > -static int mobiveil_bringup_link(struct mobiveil_pcie *pcie) -{
> > - int retries;
> > -
> > - /* check if the link is up or not */
> > - for (retries = 0; retries < LINK_WAIT_MAX_RETRIES; retries++) {
> > - if (mobiveil_pcie_link_up(pcie))
> > - return 0;
> > -
> > - usleep_range(LINK_WAIT_MIN, LINK_WAIT_MAX);
> > - }
> > -
> > - dev_err(&pcie->pdev->dev, "link never came up\n");
> > -
> > - return -ETIMEDOUT;
> > -}
> > -
> > static void mobiveil_pcie_enable_msi(struct mobiveil_pcie *pcie) {
> > phys_addr_t msg_addr = pcie->pcie_reg_base; @@ -962,43 +606,3 @@
> int
> > mobiveil_pcie_host_probe(struct mobiveil_pcie *pcie)
> >
> > return 0;
> > }
> > -
> > -static int mobiveil_pcie_probe(struct platform_device *pdev) -{
> > - struct mobiveil_pcie *pcie;
> > - struct pci_host_bridge *bridge;
> > - struct device *dev = &pdev->dev;
> > -
> > - bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie));
> > - if (!bridge)
> > - return -ENOMEM;
> > -
> > - pcie = pci_host_bridge_priv(bridge);
> > - pcie->rp.bridge = bridge;
> > -
> > - pcie->pdev = pdev;
> > -
> > - return mobiveil_pcie_host_probe(pcie);
> > -}
> > -
> > -static const struct of_device_id mobiveil_pcie_of_match[] = {
> > - {.compatible = "mbvl,gpex40-pcie",},
> > - {},
> > -};
> > -
> > -MODULE_DEVICE_TABLE(of, mobiveil_pcie_of_match);
> > -
> > -static struct platform_driver mobiveil_pcie_driver = {
> > - .probe = mobiveil_pcie_probe,
> > - .driver = {
> > - .name = "mobiveil-pcie",
> > - .of_match_table = mobiveil_pcie_of_match,
> > - .suppress_bind_attrs = true,
> > - },
> > -};
> > -
> > -builtin_platform_driver(mobiveil_pcie_driver);
> > -
> > -MODULE_LICENSE("GPL v2");
> > -MODULE_DESCRIPTION("Mobiveil PCIe host controller driver");
> > -MODULE_AUTHOR("Subrahmanya Lingappa
> <l.subrahmanya@mobiveil.co.in>");
> > diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil-plat.c
> > b/drivers/pci/controller/mobiveil/pcie-mobiveil-plat.c
> > new file mode 100644
> > index 000000000000..64c85f852869
> > --- /dev/null
> > +++ b/drivers/pci/controller/mobiveil/pcie-mobiveil-plat.c
> > @@ -0,0 +1,60 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * PCIe host controller driver for Mobiveil PCIe Host controller
> > + *
> > + * Copyright (c) 2018 Mobiveil Inc.
> > + * Copyright 2019 NXP
> > + *
> > + * Author: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
> > + * Recode: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
>
> Same feedback as before with the recode tag.
>
> > + */
> > +
> > +#include <linux/init.h>
> > +#include <linux/kernel.h>
> > +#include <linux/module.h>
> > +#include <linux/of_pci.h>
> > +#include <linux/pci.h>
> > +#include <linux/platform_device.h>
> > +#include <linux/slab.h>
> > +
> > +#include "pcie-mobiveil.h"
> > +
> > +static int mobiveil_pcie_probe(struct platform_device *pdev) {
> > + struct mobiveil_pcie *pcie;
> > + struct pci_host_bridge *bridge;
> > + struct device *dev = &pdev->dev;
> > +
> > + bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie));
> > + if (!bridge)
> > + return -ENOMEM;
> > +
> > + pcie = pci_host_bridge_priv(bridge);
> > + pcie->rp.bridge = bridge;
> > +
> > + pcie->pdev = pdev;
> > +
> > + return mobiveil_pcie_host_probe(pcie); }
> > +
> > +static const struct of_device_id mobiveil_pcie_of_match[] = {
> > + {.compatible = "mbvl,gpex40-pcie",},
> > + {},
> > +};
> > +
> > +MODULE_DEVICE_TABLE(of, mobiveil_pcie_of_match);
> > +
> > +static struct platform_driver mobiveil_pcie_driver = {
> > + .probe = mobiveil_pcie_probe,
> > + .driver = {
> > + .name = "mobiveil-pcie",
> > + .of_match_table = mobiveil_pcie_of_match,
> > + .suppress_bind_attrs = true,
> > + },
> > +};
> > +
> > +builtin_platform_driver(mobiveil_pcie_driver);
> > +
> > +MODULE_LICENSE("GPL v2");
> > +MODULE_DESCRIPTION("Mobiveil PCIe host controller driver");
> > +MODULE_AUTHOR("Subrahmanya Lingappa
> <l.subrahmanya@mobiveil.co.in>");
> > diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil.c
> > b/drivers/pci/controller/mobiveil/pcie-mobiveil.c
> > new file mode 100644
> > index 000000000000..2773f823c9ea
> > --- /dev/null
> > +++ b/drivers/pci/controller/mobiveil/pcie-mobiveil.c
> > @@ -0,0 +1,227 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * PCIe host controller driver for Mobiveil PCIe Host controller
> > + *
> > + * Copyright (c) 2018 Mobiveil Inc.
> > + * Copyright 2019 NXP
> > + *
> > + * Author: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
> > + * Recode: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> */
> > +
> > +#include <linux/delay.h>
> > +#include <linux/init.h>
> > +#include <linux/kernel.h>
> > +#include <linux/pci.h>
> > +#include <linux/platform_device.h>
> > +
> > +#include "pcie-mobiveil.h"
> > +
> > +/*
> > + * mobiveil_pcie_sel_page - routine to access paged register
> > + *
> > + * Registers whose address greater than PAGED_ADDR_BNDRY (0xc00) are
> > +paged,
> > + * for this scheme to work extracted higher 6 bits of the offset will
> > +be
> > + * written to pg_sel field of PAB_CTRL register and rest of the lower
> > +10
> > + * bits enabled with PAGED_ADDR_BNDRY are used as offset of the
> register.
> > + */
> > +static void mobiveil_pcie_sel_page(struct mobiveil_pcie *pcie, u8
> > +pg_idx) {
> > + u32 val;
> > +
> > + val = readl(pcie->csr_axi_slave_base + PAB_CTRL);
> > + val &= ~(PAGE_SEL_MASK << PAGE_SEL_SHIFT);
> > + val |= (pg_idx & PAGE_SEL_MASK) << PAGE_SEL_SHIFT;
> > +
> > + writel(val, pcie->csr_axi_slave_base + PAB_CTRL); }
> > +
> > +static void *mobiveil_pcie_comp_addr(struct mobiveil_pcie *pcie, u32
> > +off) {
> > + if (off < PAGED_ADDR_BNDRY) {
> > + /* For directly accessed registers, clear the pg_sel field */
> > + mobiveil_pcie_sel_page(pcie, 0);
> > + return pcie->csr_axi_slave_base + off;
> > + }
> > +
> > + mobiveil_pcie_sel_page(pcie, OFFSET_TO_PAGE_IDX(off));
> > + return pcie->csr_axi_slave_base + OFFSET_TO_PAGE_ADDR(off); }
> > +
> > +static int mobiveil_pcie_read(void __iomem *addr, int size, u32 *val)
> > +{
> > + if ((uintptr_t)addr & (size - 1)) {
> > + *val = 0;
> > + return PCIBIOS_BAD_REGISTER_NUMBER;
> > + }
> > +
> > + switch (size) {
> > + case 4:
> > + *val = readl(addr);
> > + break;
> > + case 2:
> > + *val = readw(addr);
> > + break;
> > + case 1:
> > + *val = readb(addr);
> > + break;
> > + default:
> > + *val = 0;
> > + return PCIBIOS_BAD_REGISTER_NUMBER;
> > + }
> > +
> > + return PCIBIOS_SUCCESSFUL;
> > +}
> > +
> > +static int mobiveil_pcie_write(void __iomem *addr, int size, u32 val)
> > +{
> > + if ((uintptr_t)addr & (size - 1))
> > + return PCIBIOS_BAD_REGISTER_NUMBER;
> > +
> > + switch (size) {
> > + case 4:
> > + writel(val, addr);
> > + break;
> > + case 2:
> > + writew(val, addr);
> > + break;
> > + case 1:
> > + writeb(val, addr);
> > + break;
> > + default:
> > + return PCIBIOS_BAD_REGISTER_NUMBER;
> > + }
> > +
> > + return PCIBIOS_SUCCESSFUL;
> > +}
> > +
> > +u32 mobiveil_csr_read(struct mobiveil_pcie *pcie, u32 off, size_t
> > +size) {
> > + void *addr;
> > + u32 val;
> > + int ret;
> > +
> > + addr = mobiveil_pcie_comp_addr(pcie, off);
> > +
> > + ret = mobiveil_pcie_read(addr, size, &val);
> > + if (ret)
> > + dev_err(&pcie->pdev->dev, "read CSR address failed\n");
> > +
> > + return val;
> > +}
> > +
> > +void mobiveil_csr_write(struct mobiveil_pcie *pcie, u32 val, u32 off,
> > + size_t size)
> > +{
> > + void *addr;
> > + int ret;
> > +
> > + addr = mobiveil_pcie_comp_addr(pcie, off);
> > +
> > + ret = mobiveil_pcie_write(addr, size, val);
> > + if (ret)
> > + dev_err(&pcie->pdev->dev, "write CSR address failed\n"); }
> > +
> > +bool mobiveil_pcie_link_up(struct mobiveil_pcie *pcie) {
> > + return (mobiveil_csr_readl(pcie, LTSSM_STATUS) &
> > + LTSSM_STATUS_L0_MASK) == LTSSM_STATUS_L0; }
> > +
> > +void program_ib_windows(struct mobiveil_pcie *pcie, int win_num,
> > + u64 cpu_addr, u64 pci_addr, u32 type, u64 size) {
> > + u32 value;
> > + u64 size64 = ~(size - 1);
> > +
> > + if (win_num >= pcie->ppio_wins) {
> > + dev_err(&pcie->pdev->dev,
> > + "ERROR: max inbound windows reached !\n");
> > + return;
> > + }
> > +
> > + value = mobiveil_csr_readl(pcie, PAB_PEX_AMAP_CTRL(win_num));
> > + value &= ~(AMAP_CTRL_TYPE_MASK << AMAP_CTRL_TYPE_SHIFT |
> WIN_SIZE_MASK);
> > + value |= type << AMAP_CTRL_TYPE_SHIFT | 1 <<
> AMAP_CTRL_EN_SHIFT |
> > + (lower_32_bits(size64) & WIN_SIZE_MASK);
> > + mobiveil_csr_writel(pcie, value, PAB_PEX_AMAP_CTRL(win_num));
> > +
> > + mobiveil_csr_writel(pcie, upper_32_bits(size64),
> > + PAB_EXT_PEX_AMAP_SIZEN(win_num));
> > +
> > + mobiveil_csr_writel(pcie, lower_32_bits(cpu_addr),
> > + PAB_PEX_AMAP_AXI_WIN(win_num));
> > + mobiveil_csr_writel(pcie, upper_32_bits(cpu_addr),
> > + PAB_EXT_PEX_AMAP_AXI_WIN(win_num));
> > +
> > + mobiveil_csr_writel(pcie, lower_32_bits(pci_addr),
> > + PAB_PEX_AMAP_PEX_WIN_L(win_num));
> > + mobiveil_csr_writel(pcie, upper_32_bits(pci_addr),
> > + PAB_PEX_AMAP_PEX_WIN_H(win_num));
> > +
> > + pcie->ib_wins_configured++;
> > +}
> > +
> > +/*
> > + * routine to program the outbound windows */ void
> > +program_ob_windows(struct mobiveil_pcie *pcie, int win_num,
> > + u64 cpu_addr, u64 pci_addr, u32 type, u64 size) {
> > + u32 value;
> > + u64 size64 = ~(size - 1);
> > +
> > + if (win_num >= pcie->apio_wins) {
> > + dev_err(&pcie->pdev->dev,
> > + "ERROR: max outbound windows reached !\n");
> > + return;
> > + }
> > +
> > + /*
> > + * program Enable Bit to 1, Type Bit to (00) base 2, AXI Window Size Bit
> > + * to 4 KB in PAB_AXI_AMAP_CTRL register
> > + */
> > + value = mobiveil_csr_readl(pcie, PAB_AXI_AMAP_CTRL(win_num));
> > + value &= ~(WIN_TYPE_MASK << WIN_TYPE_SHIFT | WIN_SIZE_MASK);
> > + value |= 1 << WIN_ENABLE_SHIFT | type << WIN_TYPE_SHIFT |
> > + (lower_32_bits(size64) & WIN_SIZE_MASK);
> > + mobiveil_csr_writel(pcie, value, PAB_AXI_AMAP_CTRL(win_num));
> > +
> > + mobiveil_csr_writel(pcie, upper_32_bits(size64),
> > + PAB_EXT_AXI_AMAP_SIZE(win_num));
> > +
> > + /*
> > + * program AXI window base with appropriate value in
> > + * PAB_AXI_AMAP_AXI_WIN0 register
> > + */
> > + mobiveil_csr_writel(pcie,
> > + lower_32_bits(cpu_addr) &
> (~AXI_WINDOW_ALIGN_MASK),
> > + PAB_AXI_AMAP_AXI_WIN(win_num));
> > + mobiveil_csr_writel(pcie, upper_32_bits(cpu_addr),
> > + PAB_EXT_AXI_AMAP_AXI_WIN(win_num));
> > +
> > + mobiveil_csr_writel(pcie, lower_32_bits(pci_addr),
> > + PAB_AXI_AMAP_PEX_WIN_L(win_num));
> > + mobiveil_csr_writel(pcie, upper_32_bits(pci_addr),
> > + PAB_AXI_AMAP_PEX_WIN_H(win_num));
> > +
> > + pcie->ob_wins_configured++;
> > +}
> > +
> > +int mobiveil_bringup_link(struct mobiveil_pcie *pcie) {
> > + int retries;
> > +
> > + /* check if the link is up or not */
> > + for (retries = 0; retries < LINK_WAIT_MAX_RETRIES; retries++) {
> > + if (mobiveil_pcie_link_up(pcie))
> > + return 0;
> > +
> > + usleep_range(LINK_WAIT_MIN, LINK_WAIT_MAX);
> > + }
> > +
> > + dev_err(&pcie->pdev->dev, "link never came up\n");
> > +
> > + return -ETIMEDOUT;
> > +}
> > diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil.h
> > b/drivers/pci/controller/mobiveil/pcie-mobiveil.h
> > new file mode 100644
> > index 000000000000..e3148078e9dd
> > --- /dev/null
> > +++ b/drivers/pci/controller/mobiveil/pcie-mobiveil.h
> > @@ -0,0 +1,178 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> > +/*
> > + * PCIe host controller driver for Mobiveil PCIe Host controller
> > + *
> > + * Copyright (c) 2018 Mobiveil Inc.
> > + * Copyright 2019 NXP
> > + *
> > + * Author: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
> > + * Recode: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> */
> > +
> > +#ifndef _PCIE_MOBIVEIL_H
> > +#define _PCIE_MOBIVEIL_H
> > +
> > +#include <linux/pci.h>
> > +#include <linux/irq.h>
> > +#include <linux/msi.h>
> > +#include "../../pci.h"
> > +
> > +/* register offsets and bit positions */
> > +
> > +/*
> > + * translation tables are grouped into windows, each window registers
> > +are
> > + * grouped into blocks of 4 or 16 registers each */
> > +#define PAB_REG_BLOCK_SIZE 16
> > +#define PAB_EXT_REG_BLOCK_SIZE 4
> > +
> > +#define PAB_REG_ADDR(offset, win) \
> > + (offset + (win * PAB_REG_BLOCK_SIZE))
> > +#define PAB_EXT_REG_ADDR(offset, win) \
> > + (offset + (win * PAB_EXT_REG_BLOCK_SIZE))
> > +
> > +#define LTSSM_STATUS 0x0404
> > +#define LTSSM_STATUS_L0_MASK 0x3f
> > +#define LTSSM_STATUS_L0 0x2d
> > +
> > +#define PAB_CTRL 0x0808
> > +#define AMBA_PIO_ENABLE_SHIFT 0
> > +#define PEX_PIO_ENABLE_SHIFT 1
> > +#define PAGE_SEL_SHIFT 13
> > +#define PAGE_SEL_MASK 0x3f
> > +#define PAGE_LO_MASK 0x3ff
> > +#define PAGE_SEL_OFFSET_SHIFT 10
> > +
> > +#define PAB_AXI_PIO_CTRL 0x0840
> > +#define APIO_EN_MASK 0xf
> > +
> > +#define PAB_PEX_PIO_CTRL 0x08c0
> > +#define PIO_ENABLE_SHIFT 0
> > +
> > +#define PAB_INTP_AMBA_MISC_ENB 0x0b0c
> > +#define PAB_INTP_AMBA_MISC_STAT 0x0b1c
> > +#define PAB_INTP_INTX_MASK 0x01e0
> > +#define PAB_INTP_MSI_MASK 0x8
> > +
> > +#define PAB_AXI_AMAP_CTRL(win) PAB_REG_ADDR(0x0ba0, win)
> > +#define WIN_ENABLE_SHIFT 0
> > +#define WIN_TYPE_SHIFT 1
> > +#define WIN_TYPE_MASK 0x3
> > +#define WIN_SIZE_MASK 0xfffffc00
> > +
> > +#define PAB_EXT_AXI_AMAP_SIZE(win) PAB_EXT_REG_ADDR(0xbaf0,
> win)
> > +
> > +#define PAB_EXT_AXI_AMAP_AXI_WIN(win)
> PAB_EXT_REG_ADDR(0x80a0, win)
> > +#define PAB_AXI_AMAP_AXI_WIN(win) PAB_REG_ADDR(0x0ba4, win)
> > +#define AXI_WINDOW_ALIGN_MASK 3
> > +
> > +#define PAB_AXI_AMAP_PEX_WIN_L(win) PAB_REG_ADDR(0x0ba8,
> win)
> > +#define PAB_BUS_SHIFT 24
> > +#define PAB_DEVICE_SHIFT 19
> > +#define PAB_FUNCTION_SHIFT 16
> > +
> > +#define PAB_AXI_AMAP_PEX_WIN_H(win) PAB_REG_ADDR(0x0bac,
> win)
> > +#define PAB_INTP_AXI_PIO_CLASS 0x474
> > +
> > +#define PAB_PEX_AMAP_CTRL(win) PAB_REG_ADDR(0x4ba0,
> win)
> > +#define AMAP_CTRL_EN_SHIFT 0
> > +#define AMAP_CTRL_TYPE_SHIFT 1
> > +#define AMAP_CTRL_TYPE_MASK 3
> > +
> > +#define PAB_EXT_PEX_AMAP_SIZEN(win) PAB_EXT_REG_ADDR(0xbef0,
> win)
> > +#define PAB_EXT_PEX_AMAP_AXI_WIN(win)
> PAB_EXT_REG_ADDR(0xb4a0, win)
> > +#define PAB_PEX_AMAP_AXI_WIN(win) PAB_REG_ADDR(0x4ba4, win)
> > +#define PAB_PEX_AMAP_PEX_WIN_L(win) PAB_REG_ADDR(0x4ba8,
> win)
> > +#define PAB_PEX_AMAP_PEX_WIN_H(win) PAB_REG_ADDR(0x4bac,
> win)
> > +
> > +/* starting offset of INTX bits in status register */
> > +#define PAB_INTX_START 5
> > +
> > +/* supported number of MSI interrupts */
> > +#define PCI_NUM_MSI 16
> > +
> > +/* MSI registers */
> > +#define MSI_BASE_LO_OFFSET 0x04
> > +#define MSI_BASE_HI_OFFSET 0x08
> > +#define MSI_SIZE_OFFSET 0x0c
> > +#define MSI_ENABLE_OFFSET 0x14
> > +#define MSI_STATUS_OFFSET 0x18
> > +#define MSI_DATA_OFFSET 0x20
> > +#define MSI_ADDR_L_OFFSET 0x24
> > +#define MSI_ADDR_H_OFFSET 0x28
> > +
> > +/* outbound and inbound window definitions */
> > +#define WIN_NUM_0 0
> > +#define WIN_NUM_1 1
> > +#define CFG_WINDOW_TYPE 0
> > +#define IO_WINDOW_TYPE 1
> > +#define MEM_WINDOW_TYPE 2
> > +#define IB_WIN_SIZE ((u64)256 * 1024 * 1024 * 1024)
> > +#define MAX_PIO_WINDOWS 8
> > +
> > +/* Parameters for the waiting for link up routine */
> > +#define LINK_WAIT_MAX_RETRIES 10
> > +#define LINK_WAIT_MIN 90000
> > +#define LINK_WAIT_MAX 100000
> > +
> > +#define PAGED_ADDR_BNDRY 0xc00
> > +#define OFFSET_TO_PAGE_ADDR(off) \
> > + ((off & PAGE_LO_MASK) | PAGED_ADDR_BNDRY)
> > +#define OFFSET_TO_PAGE_IDX(off) \
> > + ((off >> PAGE_SEL_OFFSET_SHIFT) & PAGE_SEL_MASK)
> > +
> > +struct mobiveil_msi { /* MSI information */
> > + struct mutex lock; /* protect bitmap variable */
> > + struct irq_domain *msi_domain;
> > + struct irq_domain *dev_domain;
> > + phys_addr_t msi_pages_phys;
> > + int num_of_vectors;
> > + DECLARE_BITMAP(msi_irq_in_use, PCI_NUM_MSI); };
> > +
> > +struct root_port {
> > + char root_bus_nr;
> > + void __iomem *config_axi_slave_base; /* endpoint config base */
> > + struct resource *ob_io_res;
> > + int irq;
> > + raw_spinlock_t intx_mask_lock;
> > + struct irq_domain *intx_domain;
> > + struct mobiveil_msi msi;
> > + struct pci_host_bridge *bridge;
> > +};
> > +
> > +struct mobiveil_pcie {
> > + struct platform_device *pdev;
> > + void __iomem *csr_axi_slave_base; /* root port config base */
> > + void __iomem *apb_csr_base; /* MSI register base */
> > + phys_addr_t pcie_reg_base; /* Physical PCIe Controller Base */
> > + int apio_wins;
> > + int ppio_wins;
> > + int ob_wins_configured; /* configured outbound windows */
> > + int ib_wins_configured; /* configured inbound windows */
> > + struct root_port rp;
> > +};
> > +
> > +int mobiveil_pcie_host_probe(struct mobiveil_pcie *pcie); bool
> > +mobiveil_pcie_link_up(struct mobiveil_pcie *pcie); int
> > +mobiveil_bringup_link(struct mobiveil_pcie *pcie); void
> > +program_ob_windows(struct mobiveil_pcie *pcie, int win_num, u64
> cpu_addr,
> > + u64 pci_addr, u32 type, u64 size); void
> program_ib_windows(struct
> > +mobiveil_pcie *pcie, int win_num, u64 cpu_addr,
> > + u64 pci_addr, u32 type, u64 size);
> > +u32 mobiveil_csr_read(struct mobiveil_pcie *pcie, u32 off, size_t
> > +size); void mobiveil_csr_write(struct mobiveil_pcie *pcie, u32 val, u32 off,
> > + size_t size);
> > +
> > +static inline u32 mobiveil_csr_readl(struct mobiveil_pcie *pcie, u32
> > +off) {
> > + return mobiveil_csr_read(pcie, off, 0x4); }
> > +
> > +static inline void mobiveil_csr_writel(struct mobiveil_pcie *pcie, u32 val,
> > + u32 off)
> > +{
> > + mobiveil_csr_write(pcie, val, off, 0x4); }
> > +
> > +#endif /* _PCIE_MOBIVEIL_H */
> > --
> > 2.17.1
> >
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