linux/drivers/pci/controller/dwc/pcie-designware.h

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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Synopsys DesignWare PCIe host controller driver
*
* Copyright (C) 2013 Samsung Electronics Co., Ltd.
* https://www.samsung.com
*
* Author: Jingoo Han <jg1.han@samsung.com>
*/
#ifndef _PCIE_DESIGNWARE_H
#define _PCIE_DESIGNWARE_H
#include <linux/bitfield.h>
#include <linux/dma-mapping.h>
#include <linux/irq.h>
#include <linux/msi.h>
#include <linux/pci.h>
#include <linux/pci-epc.h>
#include <linux/pci-epf.h>
/* DWC PCIe IP-core versions (native support since v4.70a) */
#define DW_PCIE_VER_365A 0x3336352a
#define DW_PCIE_VER_460A 0x3436302a
#define DW_PCIE_VER_470A 0x3437302a
#define DW_PCIE_VER_480A 0x3438302a
#define DW_PCIE_VER_490A 0x3439302a
#define DW_PCIE_VER_520A 0x3532302a
#define __dw_pcie_ver_cmp(_pci, _ver, _op) \
((_pci)->version _op DW_PCIE_VER_ ## _ver)
#define dw_pcie_ver_is(_pci, _ver) __dw_pcie_ver_cmp(_pci, _ver, ==)
#define dw_pcie_ver_is_ge(_pci, _ver) __dw_pcie_ver_cmp(_pci, _ver, >=)
#define dw_pcie_ver_type_is(_pci, _ver, _type) \
(__dw_pcie_ver_cmp(_pci, _ver, ==) && \
__dw_pcie_ver_cmp(_pci, TYPE_ ## _type, ==))
#define dw_pcie_ver_type_is_ge(_pci, _ver, _type) \
(__dw_pcie_ver_cmp(_pci, _ver, ==) && \
__dw_pcie_ver_cmp(_pci, TYPE_ ## _type, >=))
/* Parameters for the waiting for link up routine */
#define LINK_WAIT_MAX_RETRIES 10
#define LINK_WAIT_USLEEP_MIN 90000
#define LINK_WAIT_USLEEP_MAX 100000
/* Parameters for the waiting for iATU enabled routine */
#define LINK_WAIT_MAX_IATU_RETRIES 5
#define LINK_WAIT_IATU 9
/* Synopsys-specific PCIe configuration registers */
#define PCIE_PORT_AFR 0x70C
#define PORT_AFR_N_FTS_MASK GENMASK(15, 8)
#define PORT_AFR_N_FTS(n) FIELD_PREP(PORT_AFR_N_FTS_MASK, n)
#define PORT_AFR_CC_N_FTS_MASK GENMASK(23, 16)
#define PORT_AFR_CC_N_FTS(n) FIELD_PREP(PORT_AFR_CC_N_FTS_MASK, n)
#define PORT_AFR_ENTER_ASPM BIT(30)
#define PORT_AFR_L0S_ENTRANCE_LAT_SHIFT 24
#define PORT_AFR_L0S_ENTRANCE_LAT_MASK GENMASK(26, 24)
#define PORT_AFR_L1_ENTRANCE_LAT_SHIFT 27
#define PORT_AFR_L1_ENTRANCE_LAT_MASK GENMASK(29, 27)
#define PCIE_PORT_LINK_CONTROL 0x710
#define PORT_LINK_DLL_LINK_EN BIT(5)
#define PORT_LINK_FAST_LINK_MODE BIT(7)
#define PORT_LINK_MODE_MASK GENMASK(21, 16)
#define PORT_LINK_MODE(n) FIELD_PREP(PORT_LINK_MODE_MASK, n)
#define PORT_LINK_MODE_1_LANES PORT_LINK_MODE(0x1)
#define PORT_LINK_MODE_2_LANES PORT_LINK_MODE(0x3)
#define PORT_LINK_MODE_4_LANES PORT_LINK_MODE(0x7)
#define PORT_LINK_MODE_8_LANES PORT_LINK_MODE(0xf)
#define PCIE_PORT_DEBUG0 0x728
#define PORT_LOGIC_LTSSM_STATE_MASK 0x1f
#define PORT_LOGIC_LTSSM_STATE_L0 0x11
#define PCIE_PORT_DEBUG1 0x72C
#define PCIE_PORT_DEBUG1_LINK_UP BIT(4)
#define PCIE_PORT_DEBUG1_LINK_IN_TRAINING BIT(29)
#define PCIE_LINK_WIDTH_SPEED_CONTROL 0x80C
#define PORT_LOGIC_N_FTS_MASK GENMASK(7, 0)
#define PORT_LOGIC_SPEED_CHANGE BIT(17)
#define PORT_LOGIC_LINK_WIDTH_MASK GENMASK(12, 8)
#define PORT_LOGIC_LINK_WIDTH(n) FIELD_PREP(PORT_LOGIC_LINK_WIDTH_MASK, n)
#define PORT_LOGIC_LINK_WIDTH_1_LANES PORT_LOGIC_LINK_WIDTH(0x1)
#define PORT_LOGIC_LINK_WIDTH_2_LANES PORT_LOGIC_LINK_WIDTH(0x2)
#define PORT_LOGIC_LINK_WIDTH_4_LANES PORT_LOGIC_LINK_WIDTH(0x4)
#define PORT_LOGIC_LINK_WIDTH_8_LANES PORT_LOGIC_LINK_WIDTH(0x8)
#define PCIE_MSI_ADDR_LO 0x820
#define PCIE_MSI_ADDR_HI 0x824
#define PCIE_MSI_INTR0_ENABLE 0x828
#define PCIE_MSI_INTR0_MASK 0x82C
#define PCIE_MSI_INTR0_STATUS 0x830
#define GEN3_RELATED_OFF 0x890
#define GEN3_RELATED_OFF_GEN3_ZRXDC_NONCOMPL BIT(0)
#define GEN3_RELATED_OFF_RXEQ_RGRDLESS_RXTS BIT(13)
#define GEN3_RELATED_OFF_GEN3_EQ_DISABLE BIT(16)
#define GEN3_RELATED_OFF_RATE_SHADOW_SEL_SHIFT 24
#define GEN3_RELATED_OFF_RATE_SHADOW_SEL_MASK GENMASK(25, 24)
#define PCIE_PORT_MULTI_LANE_CTRL 0x8C0
#define PORT_MLTI_UPCFG_SUPPORT BIT(7)
#define PCIE_VERSION_NUMBER 0x8F8
#define PCIE_VERSION_TYPE 0x8FC
2022-06-24 17:39:43 +03:00
/*
* iATU inbound and outbound windows CSRs. Before the IP-core v4.80a each
* iATU region CSRs had been indirectly accessible by means of the dedicated
* viewport selector. The iATU/eDMA CSRs space was re-designed in DWC PCIe
* v4.80a in a way so the viewport was unrolled into the directly accessible
* iATU/eDMA CSRs space.
*/
#define PCIE_ATU_VIEWPORT 0x900
#define PCIE_ATU_REGION_DIR_IB BIT(31)
#define PCIE_ATU_REGION_DIR_OB 0
2022-06-24 17:39:43 +03:00
#define PCIE_ATU_VIEWPORT_BASE 0x904
#define PCIE_ATU_UNROLL_BASE(dir, index) \
(((index) << 9) | ((dir == PCIE_ATU_REGION_DIR_IB) ? BIT(8) : 0))
#define PCIE_ATU_VIEWPORT_SIZE 0x2C
#define PCIE_ATU_REGION_CTRL1 0x000
#define PCIE_ATU_INCREASE_REGION_SIZE BIT(13)
#define PCIE_ATU_TYPE_MEM 0x0
#define PCIE_ATU_TYPE_IO 0x2
#define PCIE_ATU_TYPE_CFG0 0x4
#define PCIE_ATU_TYPE_CFG1 0x5
#define PCIE_ATU_TD BIT(8)
#define PCIE_ATU_FUNC_NUM(pf) ((pf) << 20)
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#define PCIE_ATU_REGION_CTRL2 0x004
#define PCIE_ATU_ENABLE BIT(31)
#define PCIE_ATU_BAR_MODE_ENABLE BIT(30)
#define PCIE_ATU_FUNC_NUM_MATCH_EN BIT(19)
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#define PCIE_ATU_LOWER_BASE 0x008
#define PCIE_ATU_UPPER_BASE 0x00C
#define PCIE_ATU_LIMIT 0x010
#define PCIE_ATU_LOWER_TARGET 0x014
#define PCIE_ATU_BUS(x) FIELD_PREP(GENMASK(31, 24), x)
#define PCIE_ATU_DEV(x) FIELD_PREP(GENMASK(23, 19), x)
#define PCIE_ATU_FUNC(x) FIELD_PREP(GENMASK(18, 16), x)
2022-06-24 17:39:43 +03:00
#define PCIE_ATU_UPPER_TARGET 0x018
#define PCIE_ATU_UPPER_LIMIT 0x020
#define PCIE_MISC_CONTROL_1_OFF 0x8BC
#define PCIE_DBI_RO_WR_EN BIT(0)
#define PCIE_MSIX_DOORBELL 0x948
#define PCIE_MSIX_DOORBELL_PF_SHIFT 24
#define PCIE_PL_CHK_REG_CONTROL_STATUS 0xB20
#define PCIE_PL_CHK_REG_CHK_REG_START BIT(0)
#define PCIE_PL_CHK_REG_CHK_REG_CONTINUOUS BIT(1)
#define PCIE_PL_CHK_REG_CHK_REG_COMPARISON_ERROR BIT(16)
#define PCIE_PL_CHK_REG_CHK_REG_LOGIC_ERROR BIT(17)
#define PCIE_PL_CHK_REG_CHK_REG_COMPLETE BIT(18)
#define PCIE_PL_CHK_REG_ERR_ADDR 0xB28
/*
* iATU Unroll-specific register definitions
* From 4.80 core version the address translation will be made by unroll
*/
#define PCIE_ATU_UNR_REGION_CTRL1 0x00
#define PCIE_ATU_UNR_REGION_CTRL2 0x04
#define PCIE_ATU_UNR_LOWER_BASE 0x08
#define PCIE_ATU_UNR_UPPER_BASE 0x0C
#define PCIE_ATU_UNR_LOWER_LIMIT 0x10
#define PCIE_ATU_UNR_LOWER_TARGET 0x14
#define PCIE_ATU_UNR_UPPER_TARGET 0x18
#define PCIE_ATU_UNR_UPPER_LIMIT 0x20
/*
* RAS-DES register definitions
*/
#define PCIE_RAS_DES_EVENT_COUNTER_CONTROL 0x8
#define EVENT_COUNTER_ALL_CLEAR 0x3
#define EVENT_COUNTER_ENABLE_ALL 0x7
#define EVENT_COUNTER_ENABLE_SHIFT 2
#define EVENT_COUNTER_EVENT_SEL_MASK GENMASK(7, 0)
#define EVENT_COUNTER_EVENT_SEL_SHIFT 16
#define EVENT_COUNTER_EVENT_Tx_L0S 0x2
#define EVENT_COUNTER_EVENT_Rx_L0S 0x3
#define EVENT_COUNTER_EVENT_L1 0x5
#define EVENT_COUNTER_EVENT_L1_1 0x7
#define EVENT_COUNTER_EVENT_L1_2 0x8
#define EVENT_COUNTER_GROUP_SEL_SHIFT 24
#define EVENT_COUNTER_GROUP_5 0x5
#define PCIE_RAS_DES_EVENT_COUNTER_DATA 0xc
PCI: dwc: Don't hard-code DBI/ATU offset The DWC PCIe core contains various separate register spaces: DBI, DBI2, ATU, DMA, etc. The relationship between the addresses of these register spaces is entirely determined by the implementation of the IP block, not by the IP block design itself. Hence, the DWC driver must not make assumptions that one register space can be accessed at a fixed offset from any other register space. To avoid such assumptions, introduce an explicit/separate register pointer for the ATU register space. In particular, the current assumption is not valid for NVIDIA's T194 SoC. The ATU register space is only used on systems that require unrolled ATU access. This property is detected at run-time for host controllers, and when this is detected, this patch provides a default value for atu_base that matches the previous assumption re: register layout. An alternative would be to update all drivers for HW that requires unrolled access to explicitly set atu_base. However, it's hard to tell which drivers would require atu_base to be set. The unrolled property is not detected for endpoint systems, and so any endpoint driver that requires unrolled access must explicitly set the iatu_unroll_enabled flag (none do at present), and so a check is added to require the driver to also set atu_base while at it. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Acked-by: Vidya Sagar <vidyas@nvidia.com>
2018-11-30 11:37:19 -07:00
/*
* The default address offset between dbi_base and atu_base. Root controller
* drivers are not required to initialize atu_base if the offset matches this
* default; the driver core automatically derives atu_base from dbi_base using
* this offset, if atu_base not set.
*/
#define DEFAULT_DBI_ATU_OFFSET (0x3 << 20)
#define MAX_MSI_IRQS 256
#define MAX_MSI_IRQS_PER_CTRL 32
#define MAX_MSI_CTRLS (MAX_MSI_IRQS / MAX_MSI_IRQS_PER_CTRL)
#define MSI_REG_CTRL_BLOCK_SIZE 12
#define MSI_DEF_NUM_VECTORS 32
/* Maximum number of inbound/outbound iATUs */
#define MAX_IATU_IN 256
#define MAX_IATU_OUT 256
struct dw_pcie;
struct dw_pcie_rp;
struct dw_pcie_ep;
enum dw_pcie_device_mode {
DW_PCIE_UNKNOWN_TYPE,
DW_PCIE_EP_TYPE,
DW_PCIE_LEG_EP_TYPE,
DW_PCIE_RC_TYPE,
};
struct dw_pcie_host_ops {
int (*host_init)(struct dw_pcie_rp *pp);
void (*host_deinit)(struct dw_pcie_rp *pp);
int (*msi_host_init)(struct dw_pcie_rp *pp);
};
struct dw_pcie_rp {
bool has_msi_ctrl:1;
bool cfg0_io_shared:1;
u64 cfg0_base;
void __iomem *va_cfg0_base;
u32 cfg0_size;
resource_size_t io_base;
phys_addr_t io_bus_addr;
u32 io_size;
int irq;
const struct dw_pcie_host_ops *ops;
int msi_irq[MAX_MSI_CTRLS];
struct irq_domain *irq_domain;
struct irq_domain *msi_domain;
dma_addr_t msi_data;
struct irq_chip *msi_irq_chip;
u32 num_vectors;
u32 irq_mask[MAX_MSI_CTRLS];
struct pci_host_bridge *bridge;
raw_spinlock_t lock;
DECLARE_BITMAP(msi_irq_in_use, MAX_MSI_IRQS);
};
struct dw_pcie_ep_ops {
void (*ep_init)(struct dw_pcie_ep *ep);
Merge remote-tracking branch 'lorenzo/pci/dwc' into next * lorenzo/pci/dwc: PCI: exynos: Fix a potential init_clk_resources NULL pointer dereference PCI: iproc: Fix NULL pointer dereference for BCMA PCI: dra7xx: Iterate over INTx status bits PCI: dra7xx: Fix legacy INTD IRQ handling PCI: qcom: Account for const type of of_device_id.data PCI: dwc: artpec6: Fix return value check in artpec6_add_pcie_ep() PCI: exynos: Remove deprecated PHY initialization code PCI: dwc: artpec6: Add support for the ARTPEC-7 SoC bindings: PCI: artpec: Add support for the ARTPEC-7 SoC PCI: dwc: artpec6: Deassert the core before waiting for PHY PCI: dwc: Make cpu_addr_fixup take struct dw_pcie as argument PCI: dwc: artpec6: Add support for endpoint mode bindings: PCI: artpec: Add support for endpoint mode PCI: dwc: artpec6: Split artpec6_pcie_establish_link() into smaller functions PCI: dwc: artpec6: Use BIT and GENMASK macros PCI: dwc: artpec6: Remove unused defines PCI: dwc: dra7xx: Help compiler to remove unused code PCI: dwc: dra7xx: Assign pp->ops in dra7xx_add_pcie_port() rather than in probe PCI: dwc: dra7xx: Refactor Kconfig and Makefile handling for host/ep mode PCI: designware-ep: Add generic function for raising MSI irq PCI: designware-ep: Remove static keyword from dw_pcie_ep_reset_bar() PCI: designware-ep: Pre-allocate memory for MSI in dw_pcie_ep_init PCI: designware-ep: Read-only registers need DBI_RO_WR_EN to be writable PCI: designware-ep: dw_pcie_ep_set_msi() should only set MMC bits PCI: dwc: Use the DMA-API to get the MSI address pci: dwc: pci-dra7xx: Make shutdown handler static Includes resolution to conflict between: 4494738de0d9 ("PCI: endpoint: Add the function number as argument to EPC ops") 6f6d7873711c ("PCI: designware-ep: Add generic function for raising MSI irq") The resolution is due to Niklas Cassel <niklas.cassel@axis.com>: https://lkml.kernel.org/r/20180201085608.GA22568@axis.com
2018-02-01 11:36:07 -06:00
int (*raise_irq)(struct dw_pcie_ep *ep, u8 func_no,
enum pci_epc_irq_type type, u16 interrupt_num);
const struct pci_epc_features* (*get_features)(struct dw_pcie_ep *ep);
/*
* Provide a method to implement the different func config space
* access for different platform, if different func have different
* offset, return the offset of func. if use write a register way
* return a 0, and implement code in callback function of platform
* driver.
*/
unsigned int (*func_conf_select)(struct dw_pcie_ep *ep, u8 func_no);
};
struct dw_pcie_ep_func {
struct list_head list;
u8 func_no;
u8 msi_cap; /* MSI capability offset */
u8 msix_cap; /* MSI-X capability offset */
};
struct dw_pcie_ep {
struct pci_epc *epc;
struct list_head func_list;
const struct dw_pcie_ep_ops *ops;
phys_addr_t phys_base;
size_t addr_size;
size_t page_size;
u8 bar_to_atu[PCI_STD_NUM_BARS];
phys_addr_t *outbound_addr;
unsigned long *ib_window_map;
unsigned long *ob_window_map;
void __iomem *msi_mem;
phys_addr_t msi_mem_phys;
struct pci_epf_bar *epf_bar[PCI_STD_NUM_BARS];
};
struct dw_pcie_ops {
u64 (*cpu_addr_fixup)(struct dw_pcie *pcie, u64 cpu_addr);
u32 (*read_dbi)(struct dw_pcie *pcie, void __iomem *base, u32 reg,
size_t size);
void (*write_dbi)(struct dw_pcie *pcie, void __iomem *base, u32 reg,
size_t size, u32 val);
void (*write_dbi2)(struct dw_pcie *pcie, void __iomem *base, u32 reg,
size_t size, u32 val);
int (*link_up)(struct dw_pcie *pcie);
int (*start_link)(struct dw_pcie *pcie);
void (*stop_link)(struct dw_pcie *pcie);
};
struct dw_pcie {
struct device *dev;
void __iomem *dbi_base;
void __iomem *dbi_base2;
PCI: dwc: Don't hard-code DBI/ATU offset The DWC PCIe core contains various separate register spaces: DBI, DBI2, ATU, DMA, etc. The relationship between the addresses of these register spaces is entirely determined by the implementation of the IP block, not by the IP block design itself. Hence, the DWC driver must not make assumptions that one register space can be accessed at a fixed offset from any other register space. To avoid such assumptions, introduce an explicit/separate register pointer for the ATU register space. In particular, the current assumption is not valid for NVIDIA's T194 SoC. The ATU register space is only used on systems that require unrolled ATU access. This property is detected at run-time for host controllers, and when this is detected, this patch provides a default value for atu_base that matches the previous assumption re: register layout. An alternative would be to update all drivers for HW that requires unrolled access to explicitly set atu_base. However, it's hard to tell which drivers would require atu_base to be set. The unrolled property is not detected for endpoint systems, and so any endpoint driver that requires unrolled access must explicitly set the iatu_unroll_enabled flag (none do at present), and so a check is added to require the driver to also set atu_base while at it. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Acked-by: Vidya Sagar <vidyas@nvidia.com>
2018-11-30 11:37:19 -07:00
void __iomem *atu_base;
size_t atu_size;
u32 num_ib_windows;
u32 num_ob_windows;
u32 region_align;
u64 region_limit;
struct dw_pcie_rp pp;
struct dw_pcie_ep ep;
const struct dw_pcie_ops *ops;
u32 version;
u32 type;
int num_lanes;
int link_gen;
u8 n_fts[2];
bool iatu_unroll_enabled: 1;
};
#define to_dw_pcie_from_pp(port) container_of((port), struct dw_pcie, pp)
#define to_dw_pcie_from_ep(endpoint) \
container_of((endpoint), struct dw_pcie, ep)
void dw_pcie_version_detect(struct dw_pcie *pci);
u8 dw_pcie_find_capability(struct dw_pcie *pci, u8 cap);
u16 dw_pcie_find_ext_capability(struct dw_pcie *pci, u8 cap);
int dw_pcie_read(void __iomem *addr, int size, u32 *val);
int dw_pcie_write(void __iomem *addr, int size, u32 val);
u32 dw_pcie_read_dbi(struct dw_pcie *pci, u32 reg, size_t size);
void dw_pcie_write_dbi(struct dw_pcie *pci, u32 reg, size_t size, u32 val);
void dw_pcie_write_dbi2(struct dw_pcie *pci, u32 reg, size_t size, u32 val);
int dw_pcie_link_up(struct dw_pcie *pci);
void dw_pcie_upconfig_setup(struct dw_pcie *pci);
int dw_pcie_wait_for_link(struct dw_pcie *pci);
int dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, int type,
u64 cpu_addr, u64 pci_addr, u64 size);
int dw_pcie_prog_ep_outbound_atu(struct dw_pcie *pci, u8 func_no, int index,
int type, u64 cpu_addr, u64 pci_addr, u64 size);
int dw_pcie_prog_inbound_atu(struct dw_pcie *pci, u8 func_no, int index,
int type, u64 cpu_addr, u8 bar);
void dw_pcie_disable_atu(struct dw_pcie *pci, u32 dir, int index);
void dw_pcie_setup(struct dw_pcie *pci);
void dw_pcie_iatu_detect(struct dw_pcie *pci);
static inline void dw_pcie_writel_dbi(struct dw_pcie *pci, u32 reg, u32 val)
{
dw_pcie_write_dbi(pci, reg, 0x4, val);
}
static inline u32 dw_pcie_readl_dbi(struct dw_pcie *pci, u32 reg)
{
return dw_pcie_read_dbi(pci, reg, 0x4);
}
static inline void dw_pcie_writew_dbi(struct dw_pcie *pci, u32 reg, u16 val)
{
dw_pcie_write_dbi(pci, reg, 0x2, val);
}
static inline u16 dw_pcie_readw_dbi(struct dw_pcie *pci, u32 reg)
{
return dw_pcie_read_dbi(pci, reg, 0x2);
}
static inline void dw_pcie_writeb_dbi(struct dw_pcie *pci, u32 reg, u8 val)
{
dw_pcie_write_dbi(pci, reg, 0x1, val);
}
static inline u8 dw_pcie_readb_dbi(struct dw_pcie *pci, u32 reg)
{
return dw_pcie_read_dbi(pci, reg, 0x1);
}
static inline void dw_pcie_writel_dbi2(struct dw_pcie *pci, u32 reg, u32 val)
{
dw_pcie_write_dbi2(pci, reg, 0x4, val);
}
static inline void dw_pcie_dbi_ro_wr_en(struct dw_pcie *pci)
{
u32 reg;
u32 val;
reg = PCIE_MISC_CONTROL_1_OFF;
val = dw_pcie_readl_dbi(pci, reg);
val |= PCIE_DBI_RO_WR_EN;
dw_pcie_writel_dbi(pci, reg, val);
}
static inline void dw_pcie_dbi_ro_wr_dis(struct dw_pcie *pci)
{
u32 reg;
u32 val;
reg = PCIE_MISC_CONTROL_1_OFF;
val = dw_pcie_readl_dbi(pci, reg);
val &= ~PCIE_DBI_RO_WR_EN;
dw_pcie_writel_dbi(pci, reg, val);
}
static inline int dw_pcie_start_link(struct dw_pcie *pci)
{
if (pci->ops && pci->ops->start_link)
return pci->ops->start_link(pci);
return 0;
}
static inline void dw_pcie_stop_link(struct dw_pcie *pci)
{
if (pci->ops && pci->ops->stop_link)
pci->ops->stop_link(pci);
}
#ifdef CONFIG_PCIE_DW_HOST
irqreturn_t dw_handle_msi_irq(struct dw_pcie_rp *pp);
int dw_pcie_setup_rc(struct dw_pcie_rp *pp);
int dw_pcie_host_init(struct dw_pcie_rp *pp);
void dw_pcie_host_deinit(struct dw_pcie_rp *pp);
int dw_pcie_allocate_domains(struct dw_pcie_rp *pp);
void __iomem *dw_pcie_own_conf_map_bus(struct pci_bus *bus, unsigned int devfn,
int where);
#else
static inline irqreturn_t dw_handle_msi_irq(struct dw_pcie_rp *pp)
{
return IRQ_NONE;
}
static inline int dw_pcie_setup_rc(struct dw_pcie_rp *pp)
{
return 0;
}
static inline int dw_pcie_host_init(struct dw_pcie_rp *pp)
{
return 0;
}
static inline void dw_pcie_host_deinit(struct dw_pcie_rp *pp)
{
}
static inline int dw_pcie_allocate_domains(struct dw_pcie_rp *pp)
{
return 0;
}
static inline void __iomem *dw_pcie_own_conf_map_bus(struct pci_bus *bus,
unsigned int devfn,
int where)
{
return NULL;
}
#endif
#ifdef CONFIG_PCIE_DW_EP
void dw_pcie_ep_linkup(struct dw_pcie_ep *ep);
int dw_pcie_ep_init(struct dw_pcie_ep *ep);
int dw_pcie_ep_init_complete(struct dw_pcie_ep *ep);
void dw_pcie_ep_init_notify(struct dw_pcie_ep *ep);
void dw_pcie_ep_exit(struct dw_pcie_ep *ep);
int dw_pcie_ep_raise_legacy_irq(struct dw_pcie_ep *ep, u8 func_no);
Merge remote-tracking branch 'lorenzo/pci/dwc' into next * lorenzo/pci/dwc: PCI: exynos: Fix a potential init_clk_resources NULL pointer dereference PCI: iproc: Fix NULL pointer dereference for BCMA PCI: dra7xx: Iterate over INTx status bits PCI: dra7xx: Fix legacy INTD IRQ handling PCI: qcom: Account for const type of of_device_id.data PCI: dwc: artpec6: Fix return value check in artpec6_add_pcie_ep() PCI: exynos: Remove deprecated PHY initialization code PCI: dwc: artpec6: Add support for the ARTPEC-7 SoC bindings: PCI: artpec: Add support for the ARTPEC-7 SoC PCI: dwc: artpec6: Deassert the core before waiting for PHY PCI: dwc: Make cpu_addr_fixup take struct dw_pcie as argument PCI: dwc: artpec6: Add support for endpoint mode bindings: PCI: artpec: Add support for endpoint mode PCI: dwc: artpec6: Split artpec6_pcie_establish_link() into smaller functions PCI: dwc: artpec6: Use BIT and GENMASK macros PCI: dwc: artpec6: Remove unused defines PCI: dwc: dra7xx: Help compiler to remove unused code PCI: dwc: dra7xx: Assign pp->ops in dra7xx_add_pcie_port() rather than in probe PCI: dwc: dra7xx: Refactor Kconfig and Makefile handling for host/ep mode PCI: designware-ep: Add generic function for raising MSI irq PCI: designware-ep: Remove static keyword from dw_pcie_ep_reset_bar() PCI: designware-ep: Pre-allocate memory for MSI in dw_pcie_ep_init PCI: designware-ep: Read-only registers need DBI_RO_WR_EN to be writable PCI: designware-ep: dw_pcie_ep_set_msi() should only set MMC bits PCI: dwc: Use the DMA-API to get the MSI address pci: dwc: pci-dra7xx: Make shutdown handler static Includes resolution to conflict between: 4494738de0d9 ("PCI: endpoint: Add the function number as argument to EPC ops") 6f6d7873711c ("PCI: designware-ep: Add generic function for raising MSI irq") The resolution is due to Niklas Cassel <niklas.cassel@axis.com>: https://lkml.kernel.org/r/20180201085608.GA22568@axis.com
2018-02-01 11:36:07 -06:00
int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no,
u8 interrupt_num);
int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no,
u16 interrupt_num);
int dw_pcie_ep_raise_msix_irq_doorbell(struct dw_pcie_ep *ep, u8 func_no,
u16 interrupt_num);
void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar);
struct dw_pcie_ep_func *
dw_pcie_ep_get_func_from_ep(struct dw_pcie_ep *ep, u8 func_no);
#else
static inline void dw_pcie_ep_linkup(struct dw_pcie_ep *ep)
{
}
static inline int dw_pcie_ep_init(struct dw_pcie_ep *ep)
{
return 0;
}
static inline int dw_pcie_ep_init_complete(struct dw_pcie_ep *ep)
{
return 0;
}
static inline void dw_pcie_ep_init_notify(struct dw_pcie_ep *ep)
{
}
static inline void dw_pcie_ep_exit(struct dw_pcie_ep *ep)
{
}
static inline int dw_pcie_ep_raise_legacy_irq(struct dw_pcie_ep *ep, u8 func_no)
{
return 0;
}
Merge remote-tracking branch 'lorenzo/pci/dwc' into next * lorenzo/pci/dwc: PCI: exynos: Fix a potential init_clk_resources NULL pointer dereference PCI: iproc: Fix NULL pointer dereference for BCMA PCI: dra7xx: Iterate over INTx status bits PCI: dra7xx: Fix legacy INTD IRQ handling PCI: qcom: Account for const type of of_device_id.data PCI: dwc: artpec6: Fix return value check in artpec6_add_pcie_ep() PCI: exynos: Remove deprecated PHY initialization code PCI: dwc: artpec6: Add support for the ARTPEC-7 SoC bindings: PCI: artpec: Add support for the ARTPEC-7 SoC PCI: dwc: artpec6: Deassert the core before waiting for PHY PCI: dwc: Make cpu_addr_fixup take struct dw_pcie as argument PCI: dwc: artpec6: Add support for endpoint mode bindings: PCI: artpec: Add support for endpoint mode PCI: dwc: artpec6: Split artpec6_pcie_establish_link() into smaller functions PCI: dwc: artpec6: Use BIT and GENMASK macros PCI: dwc: artpec6: Remove unused defines PCI: dwc: dra7xx: Help compiler to remove unused code PCI: dwc: dra7xx: Assign pp->ops in dra7xx_add_pcie_port() rather than in probe PCI: dwc: dra7xx: Refactor Kconfig and Makefile handling for host/ep mode PCI: designware-ep: Add generic function for raising MSI irq PCI: designware-ep: Remove static keyword from dw_pcie_ep_reset_bar() PCI: designware-ep: Pre-allocate memory for MSI in dw_pcie_ep_init PCI: designware-ep: Read-only registers need DBI_RO_WR_EN to be writable PCI: designware-ep: dw_pcie_ep_set_msi() should only set MMC bits PCI: dwc: Use the DMA-API to get the MSI address pci: dwc: pci-dra7xx: Make shutdown handler static Includes resolution to conflict between: 4494738de0d9 ("PCI: endpoint: Add the function number as argument to EPC ops") 6f6d7873711c ("PCI: designware-ep: Add generic function for raising MSI irq") The resolution is due to Niklas Cassel <niklas.cassel@axis.com>: https://lkml.kernel.org/r/20180201085608.GA22568@axis.com
2018-02-01 11:36:07 -06:00
static inline int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no,
u8 interrupt_num)
{
return 0;
}
static inline int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no,
u16 interrupt_num)
{
return 0;
}
static inline int dw_pcie_ep_raise_msix_irq_doorbell(struct dw_pcie_ep *ep,
u8 func_no,
u16 interrupt_num)
{
return 0;
}
static inline void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar)
{
}
static inline struct dw_pcie_ep_func *
dw_pcie_ep_get_func_from_ep(struct dw_pcie_ep *ep, u8 func_no)
{
return NULL;
}
#endif
#endif /* _PCIE_DESIGNWARE_H */