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Message-ID: <AM6PR04MB57811873911E4B06D727BA9184630@AM6PR04MB5781.eurprd04.prod.outlook.com>
Date: Mon, 18 Feb 2019 07:03:01 +0000
From: "Z.q. Hou" <zhiqiang.hou@....com>
To: Subrahmanya Lingappa <l.subrahmanya@...iveil.co.in>
CC: "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"bhelgaas@...gle.com" <bhelgaas@...gle.com>,
"robh+dt@...nel.org" <robh+dt@...nel.org>,
"mark.rutland@....com" <mark.rutland@....com>,
"shawnguo@...nel.org" <shawnguo@...nel.org>,
Leo Li <leoyang.li@....com>,
"lorenzo.pieralisi@....com" <lorenzo.pieralisi@....com>,
"catalin.marinas@....com" <catalin.marinas@....com>,
"will.deacon@....com" <will.deacon@....com>,
Mingkai Hu <mingkai.hu@....com>,
"M.h. Lian" <minghuan.lian@....com>,
Xiaowei Bao <xiaowei.bao@....com>
Subject: RE: [PATCHv3 02/27] PCI: mobiveil: format the code without function
change
Hi Subbu,
Thanks a lot for your comments!
> -----Original Message-----
> From: Subrahmanya Lingappa <l.subrahmanya@...iveil.co.in>
> Sent: 2019年2月5日 13:48
> To: Z.q. Hou <zhiqiang.hou@....com>
> Cc: linux-pci@...r.kernel.org; linux-arm-kernel@...ts.infradead.org;
> devicetree@...r.kernel.org; linux-kernel@...r.kernel.org;
> bhelgaas@...gle.com; robh+dt@...nel.org; mark.rutland@....com;
> shawnguo@...nel.org; Leo Li <leoyang.li@....com>;
> lorenzo.pieralisi@....com; catalin.marinas@....com;
> will.deacon@....com; Mingkai Hu <mingkai.hu@....com>; M.h. Lian
> <minghuan.lian@....com>; Xiaowei Bao <xiaowei.bao@....com>
> Subject: Re: [PATCHv3 02/27] PCI: mobiveil: format the code without function
> change
>
> Zhiqiang,
>
> On Tue, Jan 29, 2019 at 1:38 PM Z.q. Hou <zhiqiang.hou@....com> wrote:
> >
> > From: Hou Zhiqiang <Zhiqiang.Hou@....com>
> >
> > Just format the code without functionality change.
> >
> > Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@....com>
> > Reviewed-by: Minghuan Lian <Minghuan.Lian@....com>
> > ---
> > V3:
> > - No change
> >
> > drivers/pci/controller/pcie-mobiveil.c | 261
> > +++++++++++++------------
> > 1 file changed, 137 insertions(+), 124 deletions(-)
> >
> > diff --git a/drivers/pci/controller/pcie-mobiveil.c
> > b/drivers/pci/controller/pcie-mobiveil.c
> > index d55c7e780c6e..b87471f08a40 100644
> > --- a/drivers/pci/controller/pcie-mobiveil.c
> > +++ b/drivers/pci/controller/pcie-mobiveil.c
> > @@ -31,38 +31,40 @@
> > * 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_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 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 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_CTRL 0x0808
> > +#define AMBA_PIO_ENABLE_SHIFT 0
> > +#define PEX_PIO_ENABLE_SHIFT 1
> > +#define PAGE_SEL_SHIFT 13
> above line seems to have an extra tab which makes it not aligned with lines
> above.
It is just a display issue in the email.
> > +#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_AXI_PIO_CTRL 0x0840
> > +#define APIO_EN_MASK 0xf
> >
> > -#define PAB_PEX_PIO_CTRL 0x08c0
> > -#define PIO_ENABLE_SHIFT 0
> > +#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_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 PAB_AXI_AMAP_CTRL(win) PAB_REG_ADDR(0x0ba0,
> win)
> > +#define WIN_ENABLE_SHIFT 0
> > +#define WIN_TYPE_SHIFT 1
> please check the extra tab above
Ditto
> >
> > #define PAB_EXT_AXI_AMAP_SIZE(win)
> PAB_EXT_REG_ADDR(0xbaf0, win)
> >
> > @@ -70,16 +72,16 @@
> > #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_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 PAB_PEX_AMAP_CTRL(win) PAB_REG_ADDR(0x4ba0,
> win)
> > +#define AMAP_CTRL_EN_SHIFT 0
> > +#define AMAP_CTRL_TYPE_SHIFT 1
> >
> > #define PAB_EXT_PEX_AMAP_SIZEN(win)
> PAB_EXT_REG_ADDR(0xbef0, win)
> > #define PAB_PEX_AMAP_AXI_WIN(win) PAB_REG_ADDR(0x4ba4,
> win)
> > @@ -87,39 +89,39 @@
> > #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
> > +#define PAB_INTX_START 5
> >
> > /* supported number of MSI interrupts */
> > -#define PCI_NUM_MSI 16
> > +#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
> > +#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
> size and data offset macros have extra tabs?
Ditto
> >
> > /* 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
> > +#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 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) \
> > +#define PAGED_ADDR_BNDRY 0xc00
> > +#define OFFSET_TO_PAGE_ADDR(off) \
> > ((off & PAGE_LO_MASK) | PAGED_ADDR_BNDRY)
> > -#define OFFSET_TO_PAGE_IDX(off) \
> > +#define OFFSET_TO_PAGE_IDX(off) \
> > ((off >> PAGE_SEL_OFFSET_SHIFT) & PAGE_SEL_MASK)
> >
> > struct mobiveil_msi { /* MSI information */
> > @@ -297,14 +299,14 @@ static void __iomem
> *mobiveil_pcie_map_bus(struct pci_bus *bus,
> > unsigned int devfn, int
> where)
> > {
> > struct mobiveil_pcie *pcie = bus->sysdata;
> > + u32 value;
> >
> > if (!mobiveil_pcie_valid_device(bus, devfn))
> > return NULL;
> >
> > - if (bus->number == pcie->root_bus_nr) {
> > - /* RC config access */
> > + /* RC config access */
> > + if (bus->number == pcie->root_bus_nr)
> > return pcie->csr_axi_slave_base + where;
> > - }
> >
> > /*
> > * EP config access (in Config/APIO space) @@ -312,10 +314,12
> > @@ static void __iomem *mobiveil_pcie_map_bus(struct pci_bus *bus,
> > * (BDF) in PAB_AXI_AMAP_PEX_WIN_L0 Register.
> > * Relies on pci_lock serialization
> > */
> > - csr_writel(pcie, bus->number << PAB_BUS_SHIFT |
> > - PCI_SLOT(devfn) << PAB_DEVICE_SHIFT |
> > - PCI_FUNC(devfn) << PAB_FUNCTION_SHIFT,
> > - PAB_AXI_AMAP_PEX_WIN_L(WIN_NUM_0));
> > + value = bus->number << PAB_BUS_SHIFT |
> > + PCI_SLOT(devfn) << PAB_DEVICE_SHIFT |
> > + PCI_FUNC(devfn) << PAB_FUNCTION_SHIFT;
> > +
> > + csr_writel(pcie, value,
> PAB_AXI_AMAP_PEX_WIN_L(WIN_NUM_0));
> > +
> > return pcie->config_axi_slave_base + where; }
> >
> > @@ -350,22 +354,22 @@ static void mobiveil_pcie_isr(struct irq_desc
> > *desc)
> >
> > /* Handle INTx */
> > if (intr_status & PAB_INTP_INTX_MASK) {
> > - shifted_status = csr_readl(pcie,
> PAB_INTP_AMBA_MISC_STAT) >>
> > - PAB_INTX_START;
> > + shifted_status = csr_readl(pcie,
> PAB_INTP_AMBA_MISC_STAT);
> > + shifted_status >>= PAB_INTX_START;
> > do {
> > for_each_set_bit(bit, &shifted_status,
> PCI_NUM_INTX) {
> > virq =
> irq_find_mapping(pcie->intx_domain,
> > - bit + 1);
> > + bit +
> 1);
> > if (virq)
> > generic_handle_irq(virq);
> > else
> > - dev_err_ratelimited(dev,
> > - "unexpected
> IRQ, INT%d\n", bit);
> > + dev_err_ratelimited(dev,
> "unexpected IRQ, INT%d\n",
> > +
> bit);
> >
> > /* clear interrupt */
> > csr_writel(pcie,
> > - shifted_status <<
> PAB_INTX_START,
> > -
> PAB_INTP_AMBA_MISC_STAT);
> > + shifted_status <<
> PAB_INTX_START,
> > +
> PAB_INTP_AMBA_MISC_STAT);
> > }
> > } while ((shifted_status >> PAB_INTX_START) != 0);
> > }
> > @@ -375,8 +379,7 @@ static void mobiveil_pcie_isr(struct irq_desc
> > *desc)
> >
> > /* handle MSI interrupts */
> > while (msi_status & 1) {
> > - msi_data = readl_relaxed(pcie->apb_csr_base
> > - + MSI_DATA_OFFSET);
> > + msi_data = readl_relaxed(pcie->apb_csr_base +
> > + MSI_DATA_OFFSET);
> >
> > /*
> > * MSI_STATUS_OFFSET register gets updated to zero
> @@
> > -385,18 +388,18 @@ static void mobiveil_pcie_isr(struct irq_desc *desc)
> > * two dummy reads.
> > */
> > msi_addr_lo = readl_relaxed(pcie->apb_csr_base +
> > - MSI_ADDR_L_OFFSET);
> > +
> MSI_ADDR_L_OFFSET);
> > msi_addr_hi = readl_relaxed(pcie->apb_csr_base +
> > - MSI_ADDR_H_OFFSET);
> > +
> MSI_ADDR_H_OFFSET);
> > dev_dbg(dev, "MSI registers, data: %08x,
> addr: %08x:%08x\n",
> > - msi_data, msi_addr_hi,
> msi_addr_lo);
> > + msi_data, msi_addr_hi, msi_addr_lo);
> >
> > virq = irq_find_mapping(msi->dev_domain, msi_data);
> > if (virq)
> > generic_handle_irq(virq);
> >
> > msi_status = readl_relaxed(pcie->apb_csr_base +
> > - MSI_STATUS_OFFSET);
> > +
> MSI_STATUS_OFFSET);
> > }
> >
> > /* Clear the interrupt status */ @@ -413,7 +416,7 @@ static
> > int mobiveil_pcie_parse_dt(struct mobiveil_pcie *pcie)
> >
> > /* map config resource */
> > res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
> > - "config_axi_slave");
> > + "config_axi_slave");
> > pcie->config_axi_slave_base =
> devm_pci_remap_cfg_resource(dev, res);
> > if (IS_ERR(pcie->config_axi_slave_base))
> > return PTR_ERR(pcie->config_axi_slave_base);
> > @@ -421,7 +424,7 @@ static int mobiveil_pcie_parse_dt(struct
> > mobiveil_pcie *pcie)
> >
> > /* map csr resource */
> > res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
> > - "csr_axi_slave");
> > + "csr_axi_slave");
> > pcie->csr_axi_slave_base = devm_pci_remap_cfg_resource(dev,
> res);
> > if (IS_ERR(pcie->csr_axi_slave_base))
> > return PTR_ERR(pcie->csr_axi_slave_base);
> > @@ -452,7 +455,7 @@ static int mobiveil_pcie_parse_dt(struct
> > mobiveil_pcie *pcie) }
> >
> > static void program_ib_windows(struct mobiveil_pcie *pcie, int win_num,
> > - int pci_addr, u32 type, u64 size)
> > + int pci_addr, u32 type, u64 size)
> > {
> > int pio_ctrl_val;
> > int amap_ctrl_dw;
> > @@ -465,19 +468,20 @@ static void program_ib_windows(struct
> mobiveil_pcie *pcie, int win_num,
> > }
> >
> > pio_ctrl_val = csr_readl(pcie, PAB_PEX_PIO_CTRL);
> > - csr_writel(pcie,
> > - pio_ctrl_val | (1 << PIO_ENABLE_SHIFT),
> PAB_PEX_PIO_CTRL);
> > - amap_ctrl_dw = csr_readl(pcie,
> PAB_PEX_AMAP_CTRL(win_num));
> > - amap_ctrl_dw = (amap_ctrl_dw | (type <<
> AMAP_CTRL_TYPE_SHIFT));
> > - amap_ctrl_dw = (amap_ctrl_dw | (1 << AMAP_CTRL_EN_SHIFT));
> > + pio_ctrl_val |= 1 << PIO_ENABLE_SHIFT;
> > + csr_writel(pcie, pio_ctrl_val, PAB_PEX_PIO_CTRL);
> >
> > - csr_writel(pcie, amap_ctrl_dw | lower_32_bits(size64),
> > - PAB_PEX_AMAP_CTRL(win_num));
> > + amap_ctrl_dw = csr_readl(pcie,
> PAB_PEX_AMAP_CTRL(win_num));
> > + amap_ctrl_dw |= (type << AMAP_CTRL_TYPE_SHIFT) |
> > + (1 << AMAP_CTRL_EN_SHIFT) |
> > + lower_32_bits(size64);
> > + csr_writel(pcie, amap_ctrl_dw, PAB_PEX_AMAP_CTRL(win_num));
> >
> > csr_writel(pcie, upper_32_bits(size64),
> > PAB_EXT_PEX_AMAP_SIZEN(win_num));
> >
> > csr_writel(pcie, pci_addr, PAB_PEX_AMAP_AXI_WIN(win_num));
> > +
> > csr_writel(pcie, pci_addr,
> PAB_PEX_AMAP_PEX_WIN_L(win_num));
> > csr_writel(pcie, 0, PAB_PEX_AMAP_PEX_WIN_H(win_num)); }
> @@
> > -486,7 +490,8 @@ static void program_ib_windows(struct mobiveil_pcie
> *pcie, int win_num,
> > * 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 config_io_bit, u64 size)
> > + u64 cpu_addr, u64 pci_addr,
> > + u32 config_io_bit, u64 size)
> > {
> >
> > u32 value, type;
> > @@ -505,7 +510,7 @@ static void program_ob_windows(struct
> mobiveil_pcie *pcie, int win_num,
> > type = config_io_bit;
> > value = csr_readl(pcie, PAB_AXI_AMAP_CTRL(win_num));
> > csr_writel(pcie, 1 << WIN_ENABLE_SHIFT | type <<
> WIN_TYPE_SHIFT |
> > - lower_32_bits(size64),
> PAB_AXI_AMAP_CTRL(win_num));
> > + lower_32_bits(size64),
> PAB_AXI_AMAP_CTRL(win_num));
> >
> > csr_writel(pcie, upper_32_bits(size64),
> > PAB_EXT_AXI_AMAP_SIZE(win_num));
> >
> > @@ -515,14 +520,14 @@ static void program_ob_windows(struct
> mobiveil_pcie *pcie, int win_num,
> > */
> > value = csr_readl(pcie, PAB_AXI_AMAP_AXI_WIN(win_num));
> > csr_writel(pcie, cpu_addr & (~AXI_WINDOW_ALIGN_MASK),
> > - PAB_AXI_AMAP_AXI_WIN(win_num));
> > + PAB_AXI_AMAP_AXI_WIN(win_num));
> >
> > value = csr_readl(pcie, PAB_AXI_AMAP_PEX_WIN_H(win_num));
> >
> > csr_writel(pcie, lower_32_bits(pci_addr),
> > - PAB_AXI_AMAP_PEX_WIN_L(win_num));
> > + PAB_AXI_AMAP_PEX_WIN_L(win_num));
> > csr_writel(pcie, upper_32_bits(pci_addr),
> > - PAB_AXI_AMAP_PEX_WIN_H(win_num));
> > + PAB_AXI_AMAP_PEX_WIN_H(win_num));
> >
> > pcie->ob_wins_configured++;
> > }
> > @@ -538,7 +543,9 @@ static int mobiveil_bringup_link(struct
> > mobiveil_pcie *pcie)
> >
> > usleep_range(LINK_WAIT_MIN, LINK_WAIT_MAX);
> > }
> > +
> > dev_err(&pcie->pdev->dev, "link never came up\n");
> > +
> > return -ETIMEDOUT;
> > }
> >
> > @@ -551,16 +558,16 @@ static void mobiveil_pcie_enable_msi(struct
> mobiveil_pcie *pcie)
> > msi->msi_pages_phys = (phys_addr_t)msg_addr;
> >
> > writel_relaxed(lower_32_bits(msg_addr),
> > - pcie->apb_csr_base + MSI_BASE_LO_OFFSET);
> > + pcie->apb_csr_base + MSI_BASE_LO_OFFSET);
> > writel_relaxed(upper_32_bits(msg_addr),
> > - pcie->apb_csr_base + MSI_BASE_HI_OFFSET);
> > + pcie->apb_csr_base + MSI_BASE_HI_OFFSET);
> > writel_relaxed(4096, pcie->apb_csr_base + MSI_SIZE_OFFSET);
> > writel_relaxed(1, pcie->apb_csr_base +
> MSI_ENABLE_OFFSET); }
> >
> > static int mobiveil_host_init(struct mobiveil_pcie *pcie) {
> > - u32 value, pab_ctrl, type = 0;
> > + u32 value, pab_ctrl, type;
> > int err;
> > struct resource_entry *win, *tmp;
> >
> > @@ -575,26 +582,27 @@ static int mobiveil_host_init(struct mobiveil_pcie
> *pcie)
> > * Space
> > */
> > value = csr_readl(pcie, PCI_COMMAND);
> > - csr_writel(pcie, value | PCI_COMMAND_IO |
> PCI_COMMAND_MEMORY |
> > - PCI_COMMAND_MASTER, PCI_COMMAND);
> > + value |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY |
> PCI_COMMAND_MASTER;
> > + csr_writel(pcie, value, PCI_COMMAND);
> >
> > /*
> > * program PIO Enable Bit to 1 (and PEX PIO Enable to 1) in
> PAB_CTRL
> > * register
> > */
> > pab_ctrl = csr_readl(pcie, PAB_CTRL);
> > - csr_writel(pcie, pab_ctrl | (1 << AMBA_PIO_ENABLE_SHIFT) |
> > - (1 << PEX_PIO_ENABLE_SHIFT), PAB_CTRL);
> > + pab_ctrl |= (1 << AMBA_PIO_ENABLE_SHIFT) | (1 <<
> PEX_PIO_ENABLE_SHIFT);
> > + csr_writel(pcie, pab_ctrl, PAB_CTRL);
> >
> > csr_writel(pcie, (PAB_INTP_INTX_MASK |
> PAB_INTP_MSI_MASK),
> > - PAB_INTP_AMBA_MISC_ENB);
> > + PAB_INTP_AMBA_MISC_ENB);
> >
> > /*
> > * program PIO Enable Bit to 1 and Config Window Enable Bit to
> 1 in
> > * PAB_AXI_PIO_CTRL Register
> > */
> > value = csr_readl(pcie, PAB_AXI_PIO_CTRL);
> > - csr_writel(pcie, value | APIO_EN_MASK, PAB_AXI_PIO_CTRL);
> > + value |= APIO_EN_MASK;
> > + csr_writel(pcie, value, PAB_AXI_PIO_CTRL);
> >
> > /*
> > * we'll program one outbound window for config reads and @@
> > -605,25 +613,25 @@ static int mobiveil_host_init(struct mobiveil_pcie
> > *pcie)
> >
> > /* config outbound translation window */
> > program_ob_windows(pcie, pcie->ob_wins_configured,
> > - pcie->ob_io_res->start, 0,
> CFG_WINDOW_TYPE,
> > - resource_size(pcie->ob_io_res));
> > + pcie->ob_io_res->start, 0,
> CFG_WINDOW_TYPE,
> > + resource_size(pcie->ob_io_res));
> >
> > /* memory inbound translation window */
> > program_ib_windows(pcie, WIN_NUM_1, 0,
> MEM_WINDOW_TYPE,
> > IB_WIN_SIZE);
> >
> > /* Get the I/O and memory ranges from DT */
> > resource_list_for_each_entry_safe(win, tmp, &pcie->resources) {
> > - type = 0;
> > if (resource_type(win->res) == IORESOURCE_MEM)
> > type = MEM_WINDOW_TYPE;
> > - if (resource_type(win->res) == IORESOURCE_IO)
> > + else if (resource_type(win->res) == IORESOURCE_IO)
> > type = IO_WINDOW_TYPE;
> > - if (type) {
> > - /* configure outbound translation window */
> > - program_ob_windows(pcie,
> pcie->ob_wins_configured,
> > - win->res->start, 0, type,
> > - resource_size(win->res));
> > - }
> > + else
> > + continue;
> > +
> > + /* configure outbound translation window */
> > + program_ob_windows(pcie, pcie->ob_wins_configured,
> > + win->res->start, 0, type,
> > + resource_size(win->res));
> > }
> >
> > /* setup MSI hardware registers */ @@ -643,7 +651,8 @@ static
> > void mobiveil_mask_intx_irq(struct irq_data *data)
> > mask = 1 << ((data->hwirq + PAB_INTX_START) - 1);
> > raw_spin_lock_irqsave(&pcie->intx_mask_lock, flags);
> > shifted_val = csr_readl(pcie, PAB_INTP_AMBA_MISC_ENB);
> > - csr_writel(pcie, (shifted_val & (~mask)),
> PAB_INTP_AMBA_MISC_ENB);
> > + shifted_val &= ~mask;
> > + csr_writel(pcie, shifted_val, PAB_INTP_AMBA_MISC_ENB);
> > raw_spin_unlock_irqrestore(&pcie->intx_mask_lock, flags); }
> >
> > @@ -658,7 +667,8 @@ static void mobiveil_unmask_intx_irq(struct
> irq_data *data)
> > mask = 1 << ((data->hwirq + PAB_INTX_START) - 1);
> > raw_spin_lock_irqsave(&pcie->intx_mask_lock, flags);
> > shifted_val = csr_readl(pcie, PAB_INTP_AMBA_MISC_ENB);
> > - csr_writel(pcie, (shifted_val | mask),
> PAB_INTP_AMBA_MISC_ENB);
> > + shifted_val |= mask;
> > + csr_writel(pcie, shifted_val, PAB_INTP_AMBA_MISC_ENB);
> > raw_spin_unlock_irqrestore(&pcie->intx_mask_lock, flags); }
> >
> > @@ -672,10 +682,11 @@ static struct irq_chip intx_irq_chip = {
> >
> > /* routine to setup the INTx related data */ static int
> > mobiveil_pcie_intx_map(struct irq_domain *domain, unsigned int irq,
> > - irq_hw_number_t hwirq)
> > + irq_hw_number_t hwirq)
> > {
> > irq_set_chip_and_handler(irq, &intx_irq_chip, handle_level_irq);
> > irq_set_chip_data(irq, domain->host_data);
> > +
> > return 0;
> > }
> >
> > @@ -692,7 +703,7 @@ static struct irq_chip mobiveil_msi_irq_chip = {
> >
> > static struct msi_domain_info mobiveil_msi_domain_info = {
> > .flags = (MSI_FLAG_USE_DEF_DOM_OPS |
> MSI_FLAG_USE_DEF_CHIP_OPS |
> > - MSI_FLAG_MULTI_PCI_MSI | MSI_FLAG_PCI_MSIX),
> > + MSI_FLAG_MULTI_PCI_MSI |
> MSI_FLAG_PCI_MSIX),
> > .chip = &mobiveil_msi_irq_chip,
> > };
> >
> > @@ -710,7 +721,7 @@ static void mobiveil_compose_msi_msg(struct
> > irq_data *data, struct msi_msg *msg) }
> >
> > static int mobiveil_msi_set_affinity(struct irq_data *irq_data,
> > - const struct cpumask *mask, bool force)
> > + const struct cpumask *mask,
> bool
> > + force)
> > {
> > return -EINVAL;
> > }
> > @@ -722,7 +733,8 @@ static struct irq_chip
> > mobiveil_msi_bottom_irq_chip = { };
> >
> > static int mobiveil_irq_msi_domain_alloc(struct irq_domain *domain,
> > - unsigned int virq, unsigned int nr_irqs, void *args)
> > + unsigned int virq,
> > + unsigned int nr_irqs, void
> > + *args)
> > {
> > struct mobiveil_pcie *pcie = domain->host_data;
> > struct mobiveil_msi *msi = &pcie->msi; @@ -742,13 +754,13
> @@
> > static int mobiveil_irq_msi_domain_alloc(struct irq_domain *domain,
> > mutex_unlock(&msi->lock);
> >
> > irq_domain_set_info(domain, virq, bit,
> &mobiveil_msi_bottom_irq_chip,
> > - domain->host_data,
> handle_level_irq,
> > - NULL, NULL);
> > + domain->host_data, handle_level_irq,
> NULL,
> > + NULL);
> > return 0;
> > }
> >
> > static void mobiveil_irq_msi_domain_free(struct irq_domain *domain,
> > - unsigned int virq, unsigned int nr_irqs)
> > + unsigned int virq,
> > + unsigned int nr_irqs)
> > {
> > struct irq_data *d = irq_domain_get_irq_data(domain, virq);
> > struct mobiveil_pcie *pcie = irq_data_get_irq_chip_data(d); @@
> > -756,12 +768,11 @@ static void mobiveil_irq_msi_domain_free(struct
> > irq_domain *domain,
> >
> > mutex_lock(&msi->lock);
> >
> > - if (!test_bit(d->hwirq, msi->msi_irq_in_use)) {
> > + if (!test_bit(d->hwirq, msi->msi_irq_in_use))
> > dev_err(&pcie->pdev->dev, "trying to free unused
> MSI#%lu\n",
> > d->hwirq);
> > - } else {
> > + else
> > __clear_bit(d->hwirq, msi->msi_irq_in_use);
> > - }
> >
> > mutex_unlock(&msi->lock);
> > }
> > @@ -785,12 +796,14 @@ static int mobiveil_allocate_msi_domains(struct
> mobiveil_pcie *pcie)
> > }
> >
> > msi->msi_domain = pci_msi_create_irq_domain(fwnode,
> > - &mobiveil_msi_domain_info,
> msi->dev_domain);
> > +
> &mobiveil_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;
> > }
> >
> > @@ -801,8 +814,8 @@ static int mobiveil_pcie_init_irq_domain(struct
> mobiveil_pcie *pcie)
> > int ret;
> >
> > /* setup INTx */
> > - pcie->intx_domain = irq_domain_add_linear(node,
> > - PCI_NUM_INTX, &intx_domain_ops,
> pcie);
> > + pcie->intx_domain = irq_domain_add_linear(node,
> PCI_NUM_INTX,
> > +
> &intx_domain_ops,
> > + pcie);
> >
> > if (!pcie->intx_domain) {
> > dev_err(dev, "Failed to get a INTx IRQ domain\n"); @@
> > -917,10 +930,10 @@ 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,
> > - },
> > + .name = "mobiveil-pcie",
> > + .of_match_table = mobiveil_pcie_of_match,
> > + .suppress_bind_attrs = true,
> > + },
> > };
> >
> > builtin_platform_driver(mobiveil_pcie_driver);
> > --
> > 2.17.1
> >
>
>
Thanks,
Zhiqiang
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