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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2019 Michal Meloun <mmel@FreeBSD.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*
* $FreeBSD$
*
*/
#ifndef _PCI_DW_H_
#define _PCI_DW_H_
#include "pci_dw_if.h"
/* DesignWare CIe configuration registers */
#define DW_PORT_LINK_CTRL 0x710
#define PORT_LINK_CAPABLE(n) (((n) & 0x3F) << 16)
#define PORT_LINK_CAPABLE_1 0x01
#define PORT_LINK_CAPABLE_2 0x03
#define PORT_LINK_CAPABLE_4 0x07
#define PORT_LINK_CAPABLE_8 0x0F
#define PORT_LINK_CAPABLE_16 0x1F
#define PORT_LINK_CAPABLE_32 0x3F
#define DW_GEN2_CTRL 0x80C
#define DIRECT_SPEED_CHANGE (1 << 17)
#define GEN2_CTRL_NUM_OF_LANES(n) (((n) & 0x3F) << 8)
#define GEN2_CTRL_NUM_OF_LANES_1 0x01
#define GEN2_CTRL_NUM_OF_LANES_2 0x03
#define GEN2_CTRL_NUM_OF_LANES_4 0x07
#define GEN2_CTRL_NUM_OF_LANES_8 0x0F
#define GEN2_CTRL_NUM_OF_LANES_16 0x1F
#define GEN2_CTRL_NUM_OF_LANES_32 0x3F
#define DW_MSI_ADDR_LO 0x820
#define DW_MSI_ADDR_HI 0x824
#define DW_MSI_INTR0_ENABLE 0x828
#define DW_MSI_INTR0_MASK 0x82C
#define DW_MSI_INTR0_STATUS 0x830
#define DW_MISC_CONTROL_1 0x8BC
#define DBI_RO_WR_EN (1 << 0)
/* Legacy (pre-4.80) iATU mode */
#define DW_IATU_VIEWPORT 0x900
#define IATU_REGION_INBOUND (1U << 31)
#define IATU_REGION_INDEX(x) ((x) & 0x7)
#define DW_IATU_CTRL1 0x904
#define IATU_CTRL1_TYPE(x) ((x) & 0x1F)
#define IATU_CTRL1_TYPE_MEM 0x0
#define IATU_CTRL1_TYPE_IO 0x2
#define IATU_CTRL1_TYPE_CFG0 0x4
#define IATU_CTRL1_TYPE_CFG1 0x5
#define DW_IATU_CTRL2 0x908
#define IATU_CTRL2_REGION_EN (1U << 31)
#define DW_IATU_LWR_BASE_ADDR 0x90C
#define DW_IATU_UPPER_BASE_ADDR 0x910
#define DW_IATU_LIMIT_ADDR 0x914
#define DW_IATU_LWR_TARGET_ADDR 0x918
#define DW_IATU_UPPER_TARGET_ADDR 0x91C
/* Modern (4.80+) "unroll" iATU mode */
#define DW_IATU_UR_STEP 0x200
#define DW_IATU_UR_REG(r, n) (r) * DW_IATU_UR_STEP + IATU_UR_##n
#define IATU_UR_CTRL1 0x00
#define IATU_UR_CTRL2 0x04
#define IATU_UR_LWR_BASE_ADDR 0x08
#define IATU_UR_UPPER_BASE_ADDR 0x0C
#define IATU_UR_LIMIT_ADDR 0x10
#define IATU_UR_LWR_TARGET_ADDR 0x14
#define IATU_UR_UPPER_TARGET_ADDR 0x18
#define DW_DEFAULT_IATU_UR_DBI_OFFSET 0x300000
#define DW_DEFAULT_IATU_UR_DBI_SIZE 0x1000
struct pci_dw_softc {
struct ofw_pci_softc ofw_pci; /* Must be first */
/* Filled by attachement stub */
struct resource *dbi_res;
/* pci_dw variables */
device_t dev;
phandle_t node;
struct mtx mtx;
struct resource *cfg_res;
struct ofw_pci_range io_range;
struct ofw_pci_range *mem_ranges;
int num_mem_ranges;
bool coherent;
bus_dma_tag_t dmat;
int num_lanes;
int num_out_regions;
struct resource *iatu_ur_res; /* NB: May be dbi_res */
bus_addr_t iatu_ur_offset;
bus_size_t iatu_ur_size;
bus_addr_t cfg_pa; /* PA of config memoty */
bus_size_t cfg_size; /* size of config region */
u_int bus_start;
u_int bus_end;
u_int root_bus;
u_int sub_bus;
};
DECLARE_CLASS(pci_dw_driver);
static inline void
pci_dw_dbi_wr4(device_t dev, u_int reg, uint32_t val)
{
PCI_DW_DBI_WRITE(dev, reg, val, 4);
}
static inline void
pci_dw_dbi_wr2(device_t dev, u_int reg, uint16_t val)
{
PCI_DW_DBI_WRITE(dev, reg, val, 2);
}
static inline void
pci_dw_dbi_wr1(device_t dev, u_int reg, uint8_t val)
{
PCI_DW_DBI_WRITE(dev, reg, val, 1);
}
static inline uint32_t
pci_dw_dbi_rd4(device_t dev, u_int reg)
{
return (PCI_DW_DBI_READ(dev, reg, 4));
}
static inline uint16_t
pci_dw_dbi_rd2(device_t dev, u_int reg)
{
return ((uint16_t)PCI_DW_DBI_READ(dev, reg, 2));
}
static inline uint8_t
pci_dw_dbi_rd1(device_t dev, u_int reg)
{
return ((uint8_t)PCI_DW_DBI_READ(dev, reg, 1));
}
int pci_dw_init(device_t);
#endif /* __PCI_HOST_GENERIC_H_ */
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