Commit dd70e51e authored by Bjorn Helgaas's avatar Bjorn Helgaas
Browse files

Merge remote-tracking branch 'lorenzo/pci/host/fixes' into for-linus 

  - correct GPIO name to fix HiSilicon Kirin probing issue (Loic Poulain)

  - fix MRRS setting in Marvell Armada Aardvark (Evan Wang)

  - fix interrupts by using ISR1 on Marvell Armada Aardvark (Victor Gu)

  - fix config accesses on Marvell Armada Aardvark (Victor Gu)

* lorenzo/pci/host/fixes:
  PCI: kirin: Fix reset gpio name
  PCI: aardvark: Fix PCIe Max Read Request Size setting
  PCI: aardvark: Use ISR1 instead of ISR0 interrupt in legacy irq mode
  PCI: aardvark: Set PIO_ADDR_LS correctly in advk_pcie_rd_conf()
  PCI: aardvark: Fix logic in advk_pcie_{rd,wr}_conf()
parents 60cc43fc 5db8f8d1

drivers/pci/dwc/pcie-kirin.c

+1 −1
Original line number Diff line number Diff line
@@ -486,7 +486,7 @@ static int kirin_pcie_probe(struct platform_device *pdev) 
		return ret;



	kirin_pcie->gpio_id_reset = of_get_named_gpio(dev->of_node,

						      "reset-gpio", 0);

						      "reset-gpios", 0);

	if (kirin_pcie->gpio_id_reset < 0)

		return -ENODEV;

drivers/pci/host/pci-aardvark.c

+30 −23
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ 
#define     PCIE_CORE_DEV_CTRL_STATS_MAX_PAYLOAD_SZ_SHIFT	5

#define     PCIE_CORE_DEV_CTRL_STATS_SNOOP_DISABLE		(0 << 11)

#define     PCIE_CORE_DEV_CTRL_STATS_MAX_RD_REQ_SIZE_SHIFT	12

#define     PCIE_CORE_DEV_CTRL_STATS_MAX_RD_REQ_SZ		0x2

#define PCIE_CORE_LINK_CTRL_STAT_REG				0xd0

#define     PCIE_CORE_LINK_L0S_ENTRY				BIT(0)

#define     PCIE_CORE_LINK_TRAINING				BIT(5)
@@ -100,7 +101,8 @@ 
#define PCIE_ISR1_MASK_REG			(CONTROL_BASE_ADDR + 0x4C)

#define     PCIE_ISR1_POWER_STATE_CHANGE	BIT(4)

#define     PCIE_ISR1_FLUSH			BIT(5)

#define     PCIE_ISR1_ALL_MASK			GENMASK(5, 4)

#define     PCIE_ISR1_INTX_ASSERT(val)		BIT(8 + (val))

#define     PCIE_ISR1_ALL_MASK			GENMASK(11, 4)

#define PCIE_MSI_ADDR_LOW_REG			(CONTROL_BASE_ADDR + 0x50)

#define PCIE_MSI_ADDR_HIGH_REG			(CONTROL_BASE_ADDR + 0x54)

#define PCIE_MSI_STATUS_REG			(CONTROL_BASE_ADDR + 0x58)
@@ -172,8 +174,6 @@ 
#define PCIE_CONFIG_WR_TYPE0			0xa

#define PCIE_CONFIG_WR_TYPE1			0xb



/* PCI_BDF shifts 8bit, so we need extra 4bit shift */

#define PCIE_BDF(dev)				(dev << 4)

#define PCIE_CONF_BUS(bus)			(((bus) & 0xff) << 20)

#define PCIE_CONF_DEV(dev)			(((dev) & 0x1f) << 15)

#define PCIE_CONF_FUNC(fun)			(((fun) & 0x7)	<< 12)
@@ -296,7 +296,8 @@ static void advk_pcie_setup_hw(struct advk_pcie *pcie) 
	reg = PCIE_CORE_DEV_CTRL_STATS_RELAX_ORDER_DISABLE |

		(7 << PCIE_CORE_DEV_CTRL_STATS_MAX_PAYLOAD_SZ_SHIFT) |

		PCIE_CORE_DEV_CTRL_STATS_SNOOP_DISABLE |

		PCIE_CORE_DEV_CTRL_STATS_MAX_RD_REQ_SIZE_SHIFT;

		(PCIE_CORE_DEV_CTRL_STATS_MAX_RD_REQ_SZ <<

		 PCIE_CORE_DEV_CTRL_STATS_MAX_RD_REQ_SIZE_SHIFT);

	advk_writel(pcie, reg, PCIE_CORE_DEV_CTRL_STATS_REG);



	/* Program PCIe Control 2 to disable strict ordering */
@@ -437,7 +438,7 @@ static int advk_pcie_rd_conf(struct pci_bus *bus, u32 devfn, 
	u32 reg;

	int ret;



	if (PCI_SLOT(devfn) != 0) {

	if ((bus->number == pcie->root_bus_nr) && PCI_SLOT(devfn) != 0) {

		*val = 0xffffffff;

		return PCIBIOS_DEVICE_NOT_FOUND;

	}
@@ -456,7 +457,7 @@ static int advk_pcie_rd_conf(struct pci_bus *bus, u32 devfn, 
	advk_writel(pcie, reg, PIO_CTRL);



	/* Program the address registers */

	reg = PCIE_BDF(devfn) | PCIE_CONF_REG(where);

	reg = PCIE_CONF_ADDR(bus->number, devfn, where);

	advk_writel(pcie, reg, PIO_ADDR_LS);

	advk_writel(pcie, 0, PIO_ADDR_MS);
@@ -491,7 +492,7 @@ static int advk_pcie_wr_conf(struct pci_bus *bus, u32 devfn, 
	int offset;

	int ret;



	if (PCI_SLOT(devfn) != 0)

	if ((bus->number == pcie->root_bus_nr) && PCI_SLOT(devfn) != 0)

		return PCIBIOS_DEVICE_NOT_FOUND;



	if (where % size)
@@ -609,9 +610,9 @@ static void advk_pcie_irq_mask(struct irq_data *d) 
	irq_hw_number_t hwirq = irqd_to_hwirq(d);

	u32 mask;



	mask = advk_readl(pcie, PCIE_ISR0_MASK_REG);

	mask |= PCIE_ISR0_INTX_ASSERT(hwirq);

	advk_writel(pcie, mask, PCIE_ISR0_MASK_REG);

	mask = advk_readl(pcie, PCIE_ISR1_MASK_REG);

	mask |= PCIE_ISR1_INTX_ASSERT(hwirq);

	advk_writel(pcie, mask, PCIE_ISR1_MASK_REG);

}



static void advk_pcie_irq_unmask(struct irq_data *d)
@@ -620,9 +621,9 @@ static void advk_pcie_irq_unmask(struct irq_data *d) 
	irq_hw_number_t hwirq = irqd_to_hwirq(d);

	u32 mask;



	mask = advk_readl(pcie, PCIE_ISR0_MASK_REG);

	mask &= ~PCIE_ISR0_INTX_ASSERT(hwirq);

	advk_writel(pcie, mask, PCIE_ISR0_MASK_REG);

	mask = advk_readl(pcie, PCIE_ISR1_MASK_REG);

	mask &= ~PCIE_ISR1_INTX_ASSERT(hwirq);

	advk_writel(pcie, mask, PCIE_ISR1_MASK_REG);

}



static int advk_pcie_irq_map(struct irq_domain *h,
@@ -765,29 +766,35 @@ static void advk_pcie_handle_msi(struct advk_pcie *pcie) 


static void advk_pcie_handle_int(struct advk_pcie *pcie)

{

	u32 val, mask, status;

	u32 isr0_val, isr0_mask, isr0_status;

	u32 isr1_val, isr1_mask, isr1_status;

	int i, virq;



	val = advk_readl(pcie, PCIE_ISR0_REG);

	mask = advk_readl(pcie, PCIE_ISR0_MASK_REG);

	status = val & ((~mask) & PCIE_ISR0_ALL_MASK);

	isr0_val = advk_readl(pcie, PCIE_ISR0_REG);

	isr0_mask = advk_readl(pcie, PCIE_ISR0_MASK_REG);

	isr0_status = isr0_val & ((~isr0_mask) & PCIE_ISR0_ALL_MASK);



	isr1_val = advk_readl(pcie, PCIE_ISR1_REG);

	isr1_mask = advk_readl(pcie, PCIE_ISR1_MASK_REG);

	isr1_status = isr1_val & ((~isr1_mask) & PCIE_ISR1_ALL_MASK);



	if (!status) {

		advk_writel(pcie, val, PCIE_ISR0_REG);

	if (!isr0_status && !isr1_status) {

		advk_writel(pcie, isr0_val, PCIE_ISR0_REG);

		advk_writel(pcie, isr1_val, PCIE_ISR1_REG);

		return;

	}



	/* Process MSI interrupts */

	if (status & PCIE_ISR0_MSI_INT_PENDING)

	if (isr0_status & PCIE_ISR0_MSI_INT_PENDING)

		advk_pcie_handle_msi(pcie);



	/* Process legacy interrupts */

	for (i = 0; i < PCI_NUM_INTX; i++) {

		if (!(status & PCIE_ISR0_INTX_ASSERT(i)))

		if (!(isr1_status & PCIE_ISR1_INTX_ASSERT(i)))

			continue;



		advk_writel(pcie, PCIE_ISR0_INTX_ASSERT(i),

			    PCIE_ISR0_REG);

		advk_writel(pcie, PCIE_ISR1_INTX_ASSERT(i),

			    PCIE_ISR1_REG);



		virq = irq_find_mapping(pcie->irq_domain, i);

		generic_handle_irq(virq);

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