linux_dsm_epyc7002/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.
* http://www.samsung.com
*
* Author: Jingoo Han <jg1.han@samsung.com>
*/
#ifndef _PCIE_DESIGNWARE_H
#define _PCIE_DESIGNWARE_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>
/* 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_MIN 9000
#define LINK_WAIT_IATU_MAX 10000
/* Synopsys-specific PCIe configuration registers */
#define PCIE_PORT_LINK_CONTROL 0x710
#define PORT_LINK_MODE_MASK (0x3f << 16)
#define PORT_LINK_MODE_1_LANES (0x1 << 16)
#define PORT_LINK_MODE_2_LANES (0x3 << 16)
#define PORT_LINK_MODE_4_LANES (0x7 << 16)
#define PORT_LINK_MODE_8_LANES (0xf << 16)
#define PCIE_LINK_WIDTH_SPEED_CONTROL 0x80C
#define PORT_LOGIC_SPEED_CHANGE (0x1 << 17)
#define PORT_LOGIC_LINK_WIDTH_MASK (0x1f << 8)
#define PORT_LOGIC_LINK_WIDTH_1_LANES (0x1 << 8)
#define PORT_LOGIC_LINK_WIDTH_2_LANES (0x2 << 8)
#define PORT_LOGIC_LINK_WIDTH_4_LANES (0x4 << 8)
#define PORT_LOGIC_LINK_WIDTH_8_LANES (0x8 << 8)
#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 PCIE_ATU_VIEWPORT 0x900
#define PCIE_ATU_REGION_INBOUND (0x1 << 31)
#define PCIE_ATU_REGION_OUTBOUND (0x0 << 31)
#define PCIE_ATU_REGION_INDEX2 (0x2 << 0)
#define PCIE_ATU_REGION_INDEX1 (0x1 << 0)
#define PCIE_ATU_REGION_INDEX0 (0x0 << 0)
#define PCIE_ATU_CR1 0x904
#define PCIE_ATU_TYPE_MEM (0x0 << 0)
#define PCIE_ATU_TYPE_IO (0x2 << 0)
#define PCIE_ATU_TYPE_CFG0 (0x4 << 0)
#define PCIE_ATU_TYPE_CFG1 (0x5 << 0)
#define PCIE_ATU_CR2 0x908
#define PCIE_ATU_ENABLE (0x1 << 31)
#define PCIE_ATU_BAR_MODE_ENABLE (0x1 << 30)
#define PCIE_ATU_LOWER_BASE 0x90C
#define PCIE_ATU_UPPER_BASE 0x910
#define PCIE_ATU_LIMIT 0x914
#define PCIE_ATU_LOWER_TARGET 0x918
#define PCIE_ATU_BUS(x) (((x) & 0xff) << 24)
#define PCIE_ATU_DEV(x) (((x) & 0x1f) << 19)
#define PCIE_ATU_FUNC(x) (((x) & 0x7) << 16)
#define PCIE_ATU_UPPER_TARGET 0x91C
#define PCIE_MISC_CONTROL_1_OFF 0x8BC
#define PCIE_DBI_RO_WR_EN (0x1 << 0)
/*
* 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_LIMIT 0x10
#define PCIE_ATU_UNR_LOWER_TARGET 0x14
#define PCIE_ATU_UNR_UPPER_TARGET 0x18
/* Register address builder */
#define PCIE_GET_ATU_OUTB_UNR_REG_OFFSET(region) \
((0x3 << 20) | ((region) << 9))
#define PCIE_GET_ATU_INB_UNR_REG_OFFSET(region) \
((0x3 << 20) | ((region) << 9) | (0x1 << 8))
#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 pcie_port;
struct dw_pcie;
struct dw_pcie_ep;
enum dw_pcie_region_type {
DW_PCIE_REGION_UNKNOWN,
DW_PCIE_REGION_INBOUND,
DW_PCIE_REGION_OUTBOUND,
};
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 (*rd_own_conf)(struct pcie_port *pp, int where, int size, u32 *val);
int (*wr_own_conf)(struct pcie_port *pp, int where, int size, u32 val);
int (*rd_other_conf)(struct pcie_port *pp, struct pci_bus *bus,
unsigned int devfn, int where, int size, u32 *val);
int (*wr_other_conf)(struct pcie_port *pp, struct pci_bus *bus,
unsigned int devfn, int where, int size, u32 val);
int (*host_init)(struct pcie_port *pp);
void (*msi_set_irq)(struct pcie_port *pp, int irq);
void (*msi_clear_irq)(struct pcie_port *pp, int irq);
phys_addr_t (*get_msi_addr)(struct pcie_port *pp);
u32 (*get_msi_data)(struct pcie_port *pp, int pos);
void (*scan_bus)(struct pcie_port *pp);
void (*set_num_vectors)(struct pcie_port *pp);
int (*msi_host_init)(struct pcie_port *pp);
void (*msi_irq_ack)(int irq, struct pcie_port *pp);
};
struct pcie_port {
u8 root_bus_nr;
u64 cfg0_base;
void __iomem *va_cfg0_base;
u32 cfg0_size;
u64 cfg1_base;
void __iomem *va_cfg1_base;
u32 cfg1_size;
resource_size_t io_base;
phys_addr_t io_bus_addr;
u32 io_size;
u64 mem_base;
phys_addr_t mem_bus_addr;
u32 mem_size;
struct resource *cfg;
struct resource *io;
struct resource *mem;
struct resource *busn;
int irq;
const struct dw_pcie_host_ops *ops;
int msi_irq;
struct irq_domain *irq_domain;
struct irq_domain *msi_domain;
dma_addr_t msi_data;
u32 num_vectors;
u32 irq_status[MAX_MSI_CTRLS];
raw_spinlock_t lock;
DECLARE_BITMAP(msi_irq_in_use, MAX_MSI_IRQS);
};
enum dw_pcie_as_type {
DW_PCIE_AS_UNKNOWN,
DW_PCIE_AS_MEM,
DW_PCIE_AS_IO,
};
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
2018-02-02 00:36:07 +07:00
int (*raise_irq)(struct dw_pcie_ep *ep, u8 func_no,
enum pci_epc_irq_type type, u16 interrupt_num);
};
struct dw_pcie_ep {
struct pci_epc *epc;
struct dw_pcie_ep_ops *ops;
phys_addr_t phys_base;
size_t addr_size;
size_t page_size;
u8 bar_to_atu[6];
phys_addr_t *outbound_addr;
unsigned long *ib_window_map;
unsigned long *ob_window_map;
u32 num_ib_windows;
u32 num_ob_windows;
void __iomem *msi_mem;
phys_addr_t msi_mem_phys;
u8 msi_cap; /* MSI capability offset */
u8 msix_cap; /* MSI-X capability offset */
};
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);
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;
u32 num_viewport;
u8 iatu_unroll_enabled;
struct pcie_port pp;
struct dw_pcie_ep ep;
const struct dw_pcie_ops *ops;
};
#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)
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, void __iomem *base, u32 reg,
size_t size);
void __dw_pcie_write_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg,
size_t size, u32 val);
int dw_pcie_link_up(struct dw_pcie *pci);
int dw_pcie_wait_for_link(struct dw_pcie *pci);
void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index,
int type, u64 cpu_addr, u64 pci_addr,
u32 size);
int dw_pcie_prog_inbound_atu(struct dw_pcie *pci, int index, int bar,
u64 cpu_addr, enum dw_pcie_as_type as_type);
void dw_pcie_disable_atu(struct dw_pcie *pci, int index,
enum dw_pcie_region_type type);
void dw_pcie_setup(struct dw_pcie *pci);
static inline void dw_pcie_writel_dbi(struct dw_pcie *pci, u32 reg, u32 val)
{
__dw_pcie_write_dbi(pci, pci->dbi_base, reg, 0x4, val);
}
static inline u32 dw_pcie_readl_dbi(struct dw_pcie *pci, u32 reg)
{
return __dw_pcie_read_dbi(pci, pci->dbi_base, reg, 0x4);
}
static inline void dw_pcie_writew_dbi(struct dw_pcie *pci, u32 reg, u16 val)
{
__dw_pcie_write_dbi(pci, pci->dbi_base, reg, 0x2, val);
}
static inline u16 dw_pcie_readw_dbi(struct dw_pcie *pci, u32 reg)
{
return __dw_pcie_read_dbi(pci, pci->dbi_base, reg, 0x2);
}
static inline void dw_pcie_writeb_dbi(struct dw_pcie *pci, u32 reg, u8 val)
{
__dw_pcie_write_dbi(pci, pci->dbi_base, reg, 0x1, val);
}
static inline u8 dw_pcie_readb_dbi(struct dw_pcie *pci, u32 reg)
{
return __dw_pcie_read_dbi(pci, pci->dbi_base, reg, 0x1);
}
static inline void dw_pcie_writel_dbi2(struct dw_pcie *pci, u32 reg, u32 val)
{
__dw_pcie_write_dbi(pci, pci->dbi_base2, reg, 0x4, val);
}
static inline u32 dw_pcie_readl_dbi2(struct dw_pcie *pci, u32 reg)
{
return __dw_pcie_read_dbi(pci, pci->dbi_base2, reg, 0x4);
}
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);
}
#ifdef CONFIG_PCIE_DW_HOST
irqreturn_t dw_handle_msi_irq(struct pcie_port *pp);
void dw_pcie_msi_init(struct pcie_port *pp);
void dw_pcie_free_msi(struct pcie_port *pp);
void dw_pcie_setup_rc(struct pcie_port *pp);
int dw_pcie_host_init(struct pcie_port *pp);
int dw_pcie_allocate_domains(struct pcie_port *pp);
#else
static inline irqreturn_t dw_handle_msi_irq(struct pcie_port *pp)
{
return IRQ_NONE;
}
static inline void dw_pcie_msi_init(struct pcie_port *pp)
{
}
static inline void dw_pcie_free_msi(struct pcie_port *pp)
{
}
static inline void dw_pcie_setup_rc(struct pcie_port *pp)
{
}
static inline int dw_pcie_host_init(struct pcie_port *pp)
{
return 0;
}
static inline int dw_pcie_allocate_domains(struct pcie_port *pp)
{
return 0;
}
#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);
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
2018-02-02 00:36:07 +07:00
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);
void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar);
#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 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
2018-02-02 00:36:07 +07:00
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 void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar)
{
}
#endif
#endif /* _PCIE_DESIGNWARE_H */