mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 11:00:15 +00:00
2cb32607e1
Signed-off-by: Bharat Gooty <bharat.gooty@broadcom.com>
1288 lines
33 KiB
C
1288 lines
33 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2020-2021 Broadcom
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*
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <generic-phy.h>
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#include <pci.h>
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#include <malloc.h>
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#include <asm/io.h>
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#include <dm/device_compat.h>
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#include <linux/delay.h>
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#include <linux/log2.h>
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#define EP_PERST_SOURCE_SELECT_SHIFT 2
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#define EP_PERST_SOURCE_SELECT BIT(EP_PERST_SOURCE_SELECT_SHIFT)
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#define EP_MODE_SURVIVE_PERST_SHIFT 1
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#define EP_MODE_SURVIVE_PERST BIT(EP_MODE_SURVIVE_PERST_SHIFT)
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#define RC_PCIE_RST_OUTPUT_SHIFT 0
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#define RC_PCIE_RST_OUTPUT BIT(RC_PCIE_RST_OUTPUT_SHIFT)
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#define CFG_IND_ADDR_MASK 0x00001ffc
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#define CFG_ADDR_BUS_NUM_SHIFT 20
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#define CFG_ADDR_BUS_NUM_MASK 0x0ff00000
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#define CFG_ADDR_DEV_NUM_SHIFT 15
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#define CFG_ADDR_DEV_NUM_MASK 0x000f8000
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#define CFG_ADDR_FUNC_NUM_SHIFT 12
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#define CFG_ADDR_FUNC_NUM_MASK 0x00007000
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#define CFG_ADDR_REG_NUM_SHIFT 2
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#define CFG_ADDR_REG_NUM_MASK 0x00000ffc
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#define CFG_ADDR_CFG_TYPE_SHIFT 0
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#define CFG_ADDR_CFG_TYPE_MASK 0x00000003
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#define IPROC_PCI_PM_CAP 0x48
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#define IPROC_PCI_PM_CAP_MASK 0xffff
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#define IPROC_PCI_EXP_CAP 0xac
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#define IPROC_PCIE_REG_INVALID 0xffff
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#define PCI_EXP_TYPE_ROOT_PORT 0x4 /* Root Port */
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#define PCI_EXP_RTCTL 28 /* Root Control */
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/* CRS Software Visibility capability */
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#define PCI_EXP_RTCAP_CRSVIS 0x0001
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#define PCI_EXP_LNKSTA 18 /* Link Status */
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#define PCI_EXP_LNKSTA_NLW 0x03f0 /* Negotiated Link Width */
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#define PCIE_PHYLINKUP_SHIFT 3
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#define PCIE_PHYLINKUP BIT(PCIE_PHYLINKUP_SHIFT)
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#define PCIE_DL_ACTIVE_SHIFT 2
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#define PCIE_DL_ACTIVE BIT(PCIE_DL_ACTIVE_SHIFT)
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/* derive the enum index of the outbound/inbound mapping registers */
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#define MAP_REG(base_reg, index) ((base_reg) + (index) * 2)
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/*
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* Maximum number of outbound mapping window sizes that can be supported by any
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* OARR/OMAP mapping pair
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*/
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#define MAX_NUM_OB_WINDOW_SIZES 4
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#define OARR_VALID_SHIFT 0
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#define OARR_VALID BIT(OARR_VALID_SHIFT)
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#define OARR_SIZE_CFG_SHIFT 1
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/*
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* Maximum number of inbound mapping region sizes that can be supported by an
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* IARR
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*/
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#define MAX_NUM_IB_REGION_SIZES 9
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#define IMAP_VALID_SHIFT 0
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#define IMAP_VALID BIT(IMAP_VALID_SHIFT)
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#define APB_ERR_EN_SHIFT 0
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#define APB_ERR_EN BIT(APB_ERR_EN_SHIFT)
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/**
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* iProc PCIe host registers
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*/
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enum iproc_pcie_reg {
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/* clock/reset signal control */
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IPROC_PCIE_CLK_CTRL = 0,
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/*
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* To allow MSI to be steered to an external MSI controller (e.g., ARM
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* GICv3 ITS)
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*/
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IPROC_PCIE_MSI_GIC_MODE,
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/*
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* IPROC_PCIE_MSI_BASE_ADDR and IPROC_PCIE_MSI_WINDOW_SIZE define the
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* window where the MSI posted writes are written, for the writes to be
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* interpreted as MSI writes.
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*/
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IPROC_PCIE_MSI_BASE_ADDR,
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IPROC_PCIE_MSI_WINDOW_SIZE,
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/*
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* To hold the address of the register where the MSI writes are
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* programed. When ARM GICv3 ITS is used, this should be programmed
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* with the address of the GITS_TRANSLATER register.
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*/
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IPROC_PCIE_MSI_ADDR_LO,
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IPROC_PCIE_MSI_ADDR_HI,
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/* enable MSI */
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IPROC_PCIE_MSI_EN_CFG,
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/* allow access to root complex configuration space */
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IPROC_PCIE_CFG_IND_ADDR,
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IPROC_PCIE_CFG_IND_DATA,
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/* allow access to device configuration space */
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IPROC_PCIE_CFG_ADDR,
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IPROC_PCIE_CFG_DATA,
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/* enable INTx */
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IPROC_PCIE_INTX_EN,
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IPROC_PCIE_INTX_CSR,
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/* outbound address mapping */
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IPROC_PCIE_OARR0,
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IPROC_PCIE_OMAP0,
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IPROC_PCIE_OARR1,
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IPROC_PCIE_OMAP1,
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IPROC_PCIE_OARR2,
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IPROC_PCIE_OMAP2,
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IPROC_PCIE_OARR3,
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IPROC_PCIE_OMAP3,
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/* inbound address mapping */
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IPROC_PCIE_IARR0,
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IPROC_PCIE_IMAP0,
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IPROC_PCIE_IARR1,
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IPROC_PCIE_IMAP1,
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IPROC_PCIE_IARR2,
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IPROC_PCIE_IMAP2,
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IPROC_PCIE_IARR3,
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IPROC_PCIE_IMAP3,
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IPROC_PCIE_IARR4,
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IPROC_PCIE_IMAP4,
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/* config read status */
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IPROC_PCIE_CFG_RD_STATUS,
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/* link status */
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IPROC_PCIE_LINK_STATUS,
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/* enable APB error for unsupported requests */
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IPROC_PCIE_APB_ERR_EN,
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/* Ordering Mode configuration registers */
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IPROC_PCIE_ORDERING_CFG,
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IPROC_PCIE_IMAP0_RO_CONTROL,
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IPROC_PCIE_IMAP1_RO_CONTROL,
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IPROC_PCIE_IMAP2_RO_CONTROL,
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IPROC_PCIE_IMAP3_RO_CONTROL,
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IPROC_PCIE_IMAP4_RO_CONTROL,
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/* total number of core registers */
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IPROC_PCIE_MAX_NUM_REG,
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};
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/* iProc PCIe PAXB v2 registers */
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static const u16 iproc_pcie_reg_paxb_v2[] = {
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[IPROC_PCIE_CLK_CTRL] = 0x000,
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[IPROC_PCIE_CFG_IND_ADDR] = 0x120,
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[IPROC_PCIE_CFG_IND_DATA] = 0x124,
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[IPROC_PCIE_CFG_ADDR] = 0x1f8,
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[IPROC_PCIE_CFG_DATA] = 0x1fc,
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[IPROC_PCIE_INTX_EN] = 0x330,
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[IPROC_PCIE_INTX_CSR] = 0x334,
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[IPROC_PCIE_OARR0] = 0xd20,
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[IPROC_PCIE_OMAP0] = 0xd40,
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[IPROC_PCIE_OARR1] = 0xd28,
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[IPROC_PCIE_OMAP1] = 0xd48,
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[IPROC_PCIE_OARR2] = 0xd60,
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[IPROC_PCIE_OMAP2] = 0xd68,
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[IPROC_PCIE_OARR3] = 0xdf0,
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[IPROC_PCIE_OMAP3] = 0xdf8,
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[IPROC_PCIE_IARR0] = 0xd00,
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[IPROC_PCIE_IMAP0] = 0xc00,
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[IPROC_PCIE_IARR2] = 0xd10,
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[IPROC_PCIE_IMAP2] = 0xcc0,
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[IPROC_PCIE_IARR3] = 0xe00,
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[IPROC_PCIE_IMAP3] = 0xe08,
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[IPROC_PCIE_IARR4] = 0xe68,
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[IPROC_PCIE_IMAP4] = 0xe70,
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[IPROC_PCIE_CFG_RD_STATUS] = 0xee0,
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[IPROC_PCIE_LINK_STATUS] = 0xf0c,
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[IPROC_PCIE_APB_ERR_EN] = 0xf40,
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[IPROC_PCIE_ORDERING_CFG] = 0x2000,
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[IPROC_PCIE_IMAP0_RO_CONTROL] = 0x201c,
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[IPROC_PCIE_IMAP1_RO_CONTROL] = 0x2020,
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[IPROC_PCIE_IMAP2_RO_CONTROL] = 0x2024,
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[IPROC_PCIE_IMAP3_RO_CONTROL] = 0x2028,
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[IPROC_PCIE_IMAP4_RO_CONTROL] = 0x202c,
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};
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/* iProc PCIe PAXC v2 registers */
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static const u16 iproc_pcie_reg_paxc_v2[] = {
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[IPROC_PCIE_MSI_GIC_MODE] = 0x050,
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[IPROC_PCIE_MSI_BASE_ADDR] = 0x074,
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[IPROC_PCIE_MSI_WINDOW_SIZE] = 0x078,
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[IPROC_PCIE_MSI_ADDR_LO] = 0x07c,
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[IPROC_PCIE_MSI_ADDR_HI] = 0x080,
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[IPROC_PCIE_MSI_EN_CFG] = 0x09c,
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[IPROC_PCIE_CFG_IND_ADDR] = 0x1f0,
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[IPROC_PCIE_CFG_IND_DATA] = 0x1f4,
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[IPROC_PCIE_CFG_ADDR] = 0x1f8,
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[IPROC_PCIE_CFG_DATA] = 0x1fc,
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};
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/**
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* List of device IDs of controllers that have corrupted
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* capability list that require SW fixup
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*/
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static const u16 iproc_pcie_corrupt_cap_did[] = {
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0x16cd,
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0x16f0,
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0xd802,
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0xd804
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};
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enum iproc_pcie_type {
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IPROC_PCIE_PAXB_V2,
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IPROC_PCIE_PAXC,
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IPROC_PCIE_PAXC_V2,
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};
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/**
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* struct iproc_pcie_ob - iProc PCIe outbound mapping
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*
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* @axi_offset: offset from the AXI address to the internal address used by
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* the iProc PCIe core
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* @nr_windows: total number of supported outbound mapping windows
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*/
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struct iproc_pcie_ob {
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resource_size_t axi_offset;
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unsigned int nr_windows;
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};
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/**
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* struct iproc_pcie_ib - iProc PCIe inbound mapping
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*
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* @nr_regions: total number of supported inbound mapping regions
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*/
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struct iproc_pcie_ib {
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unsigned int nr_regions;
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};
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/**
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* struct iproc_pcie_ob_map - outbound mapping controller specific parameters
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*
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* @window_sizes: list of supported outbound mapping window sizes in MB
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* @nr_sizes: number of supported outbound mapping window sizes
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*/
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struct iproc_pcie_ob_map {
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resource_size_t window_sizes[MAX_NUM_OB_WINDOW_SIZES];
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unsigned int nr_sizes;
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};
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static const struct iproc_pcie_ob_map paxb_v2_ob_map[] = {
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{
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/* OARR0/OMAP0 */
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.window_sizes = { 128, 256 },
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.nr_sizes = 2,
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},
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{
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/* OARR1/OMAP1 */
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.window_sizes = { 128, 256 },
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.nr_sizes = 2,
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},
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{
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/* OARR2/OMAP2 */
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.window_sizes = { 128, 256, 512, 1024 },
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.nr_sizes = 4,
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},
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{
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/* OARR3/OMAP3 */
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.window_sizes = { 128, 256, 512, 1024 },
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.nr_sizes = 4,
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},
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};
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/**
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* iProc PCIe inbound mapping type
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*/
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enum iproc_pcie_ib_map_type {
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/* for DDR memory */
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IPROC_PCIE_IB_MAP_MEM = 0,
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/* for device I/O memory */
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IPROC_PCIE_IB_MAP_IO,
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/* invalid or unused */
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IPROC_PCIE_IB_MAP_INVALID
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};
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/**
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* struct iproc_pcie_ib_map - inbound mapping controller specific parameters
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*
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* @type: inbound mapping region type
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* @size_unit: inbound mapping region size unit, could be SZ_1K, SZ_1M, or SZ_1G
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* @region_sizes: list of supported inbound mapping region sizes in KB, MB, or
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* GB, depedning on the size unit
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* @nr_sizes: number of supported inbound mapping region sizes
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* @nr_windows: number of supported inbound mapping windows for the region
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* @imap_addr_offset: register offset between the upper and lower 32-bit
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* IMAP address registers
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* @imap_window_offset: register offset between each IMAP window
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*/
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struct iproc_pcie_ib_map {
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enum iproc_pcie_ib_map_type type;
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unsigned int size_unit;
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resource_size_t region_sizes[MAX_NUM_IB_REGION_SIZES];
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unsigned int nr_sizes;
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unsigned int nr_windows;
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u16 imap_addr_offset;
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u16 imap_window_offset;
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};
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static const struct iproc_pcie_ib_map paxb_v2_ib_map[] = {
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{
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/* IARR0/IMAP0 */
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.type = IPROC_PCIE_IB_MAP_IO,
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.size_unit = SZ_1K,
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.region_sizes = { 32 },
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.nr_sizes = 1,
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.nr_windows = 8,
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.imap_addr_offset = 0x40,
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.imap_window_offset = 0x4,
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},
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{
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/* IARR1/IMAP1 (currently unused) */
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.type = IPROC_PCIE_IB_MAP_INVALID,
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},
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{
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/* IARR2/IMAP2 */
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.type = IPROC_PCIE_IB_MAP_MEM,
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.size_unit = SZ_1M,
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.region_sizes = { 64, 128, 256, 512, 1024, 2048, 4096, 8192,
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16384 },
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.nr_sizes = 9,
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.nr_windows = 1,
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.imap_addr_offset = 0x4,
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.imap_window_offset = 0x8,
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},
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{
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/* IARR3/IMAP3 */
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.type = IPROC_PCIE_IB_MAP_MEM,
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.size_unit = SZ_1G,
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.region_sizes = { 1, 2, 4, 8, 16, 32 },
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.nr_sizes = 6,
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.nr_windows = 8,
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.imap_addr_offset = 0x4,
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.imap_window_offset = 0x8,
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},
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{
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/* IARR4/IMAP4 */
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.type = IPROC_PCIE_IB_MAP_MEM,
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.size_unit = SZ_1G,
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.region_sizes = { 32, 64, 128, 256, 512 },
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.nr_sizes = 5,
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.nr_windows = 8,
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.imap_addr_offset = 0x4,
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.imap_window_offset = 0x8,
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},
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};
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/**
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* struct iproc_pcie - iproc pcie device instance
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*
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* @dev: pointer to pcie udevice
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* @base: device I/O base address
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* @type: pci device type, PAXC or PAXB
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* @reg_offsets: pointer to pcie host register
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* @fix_paxc_cap: paxc capability
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* @need_ob_cfg: outbound mapping status
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* @ob: pcie outbound mapping
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* @ob_map: pointer to outbound mapping parameters
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* @need_ib_cfg: inbound mapping status
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* @ib: pcie inbound mapping
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* @ib_map: pointer to inbound mapping parameters
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* @ep_is_internal: ep status
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* @phy: phy device
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* @link_is_active: link up status
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* @has_apb_err_disable: apb error status
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*/
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struct iproc_pcie {
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struct udevice *dev;
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void __iomem *base;
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enum iproc_pcie_type type;
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u16 *reg_offsets;
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bool fix_paxc_cap;
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bool need_ob_cfg;
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struct iproc_pcie_ob ob;
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const struct iproc_pcie_ob_map *ob_map;
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bool need_ib_cfg;
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struct iproc_pcie_ib ib;
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const struct iproc_pcie_ib_map *ib_map;
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bool ep_is_internal;
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struct phy phy;
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bool link_is_active;
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bool has_apb_err_disable;
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};
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static inline bool iproc_pcie_reg_is_invalid(u16 reg_offset)
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{
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return !!(reg_offset == IPROC_PCIE_REG_INVALID);
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}
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static inline u16 iproc_pcie_reg_offset(struct iproc_pcie *pcie,
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enum iproc_pcie_reg reg)
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{
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return pcie->reg_offsets[reg];
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}
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static inline u32 iproc_pcie_read_reg(struct iproc_pcie *pcie,
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enum iproc_pcie_reg reg)
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{
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u16 offset = iproc_pcie_reg_offset(pcie, reg);
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if (iproc_pcie_reg_is_invalid(offset))
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return 0;
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return readl(pcie->base + offset);
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}
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static inline void iproc_pcie_write_reg(struct iproc_pcie *pcie,
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enum iproc_pcie_reg reg, u32 val)
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{
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u16 offset = iproc_pcie_reg_offset(pcie, reg);
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if (iproc_pcie_reg_is_invalid(offset))
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return;
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writel(val, pcie->base + offset);
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}
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static int iproc_pcie_map_ep_cfg_reg(const struct udevice *udev, pci_dev_t bdf,
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uint where, void **paddress)
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{
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struct iproc_pcie *pcie = dev_get_priv(udev);
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unsigned int busno = PCI_BUS(bdf);
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unsigned int slot = PCI_DEV(bdf);
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unsigned int fn = PCI_FUNC(bdf);
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u16 offset;
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u32 val;
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/* root complex access */
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if (busno == 0) {
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if (slot > 0 || fn > 0)
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return -ENODEV;
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iproc_pcie_write_reg(pcie, IPROC_PCIE_CFG_IND_ADDR,
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where & CFG_IND_ADDR_MASK);
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offset = iproc_pcie_reg_offset(pcie, IPROC_PCIE_CFG_IND_DATA);
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if (iproc_pcie_reg_is_invalid(offset))
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return -ENODEV;
|
|
|
|
*paddress = (pcie->base + offset);
|
|
return 0;
|
|
}
|
|
|
|
if (!pcie->link_is_active)
|
|
return -ENODEV;
|
|
|
|
/* EP device access */
|
|
val = (busno << CFG_ADDR_BUS_NUM_SHIFT) |
|
|
(slot << CFG_ADDR_DEV_NUM_SHIFT) |
|
|
(fn << CFG_ADDR_FUNC_NUM_SHIFT) |
|
|
(where & CFG_ADDR_REG_NUM_MASK) |
|
|
(1 & CFG_ADDR_CFG_TYPE_MASK);
|
|
|
|
iproc_pcie_write_reg(pcie, IPROC_PCIE_CFG_ADDR, val);
|
|
offset = iproc_pcie_reg_offset(pcie, IPROC_PCIE_CFG_DATA);
|
|
|
|
if (iproc_pcie_reg_is_invalid(offset))
|
|
return -ENODEV;
|
|
|
|
*paddress = (pcie->base + offset);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void iproc_pcie_fix_cap(struct iproc_pcie *pcie, int where, ulong *val)
|
|
{
|
|
u32 i, dev_id;
|
|
|
|
switch (where & ~0x3) {
|
|
case PCI_VENDOR_ID:
|
|
dev_id = *val >> 16;
|
|
|
|
/*
|
|
* Activate fixup for those controllers that have corrupted
|
|
* capability list registers
|
|
*/
|
|
for (i = 0; i < ARRAY_SIZE(iproc_pcie_corrupt_cap_did); i++)
|
|
if (dev_id == iproc_pcie_corrupt_cap_did[i])
|
|
pcie->fix_paxc_cap = true;
|
|
break;
|
|
|
|
case IPROC_PCI_PM_CAP:
|
|
if (pcie->fix_paxc_cap) {
|
|
/* advertise PM, force next capability to PCIe */
|
|
*val &= ~IPROC_PCI_PM_CAP_MASK;
|
|
*val |= IPROC_PCI_EXP_CAP << 8 | PCI_CAP_ID_PM;
|
|
}
|
|
break;
|
|
|
|
case IPROC_PCI_EXP_CAP:
|
|
if (pcie->fix_paxc_cap) {
|
|
/* advertise root port, version 2, terminate here */
|
|
*val = (PCI_EXP_TYPE_ROOT_PORT << 4 | 2) << 16 |
|
|
PCI_CAP_ID_EXP;
|
|
}
|
|
break;
|
|
|
|
case IPROC_PCI_EXP_CAP + PCI_EXP_RTCTL:
|
|
/* Don't advertise CRS SV support */
|
|
*val &= ~(PCI_EXP_RTCAP_CRSVIS << 16);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int iproc_pci_raw_config_read32(struct iproc_pcie *pcie,
|
|
unsigned int devfn, int where,
|
|
int size, u32 *val)
|
|
{
|
|
void __iomem *addr;
|
|
int ret;
|
|
|
|
ret = iproc_pcie_map_ep_cfg_reg(pcie->dev, devfn, where & ~0x3, &addr);
|
|
if (ret) {
|
|
*val = ~0;
|
|
return -EINVAL;
|
|
}
|
|
|
|
*val = readl(addr);
|
|
|
|
if (size <= 2)
|
|
*val = (*val >> (8 * (where & 3))) & ((1 << (size * 8)) - 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int iproc_pci_raw_config_write32(struct iproc_pcie *pcie,
|
|
unsigned int devfn, int where,
|
|
int size, u32 val)
|
|
{
|
|
void __iomem *addr;
|
|
int ret;
|
|
u32 mask, tmp;
|
|
|
|
ret = iproc_pcie_map_ep_cfg_reg(pcie->dev, devfn, where & ~0x3, &addr);
|
|
if (ret)
|
|
return -EINVAL;
|
|
|
|
if (size == 4) {
|
|
writel(val, addr);
|
|
return 0;
|
|
}
|
|
|
|
mask = ~(((1 << (size * 8)) - 1) << ((where & 0x3) * 8));
|
|
tmp = readl(addr) & mask;
|
|
tmp |= val << ((where & 0x3) * 8);
|
|
writel(tmp, addr);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* iproc_pcie_apb_err_disable() - configure apb error
|
|
*
|
|
* APB error forwarding can be disabled during access of configuration
|
|
* registers of the endpoint device, to prevent unsupported requests
|
|
* (typically seen during enumeration with multi-function devices) from
|
|
* triggering a system exception.
|
|
*
|
|
* @bus: pcie udevice
|
|
* @bdf: pdf value
|
|
* @disabled: flag to enable/disabled apb error
|
|
*/
|
|
static inline void iproc_pcie_apb_err_disable(const struct udevice *bus,
|
|
pci_dev_t bdf, bool disable)
|
|
{
|
|
struct iproc_pcie *pcie = dev_get_priv(bus);
|
|
u32 val;
|
|
|
|
if (PCI_BUS(bdf) && pcie->has_apb_err_disable) {
|
|
val = iproc_pcie_read_reg(pcie, IPROC_PCIE_APB_ERR_EN);
|
|
if (disable)
|
|
val &= ~APB_ERR_EN;
|
|
else
|
|
val |= APB_ERR_EN;
|
|
iproc_pcie_write_reg(pcie, IPROC_PCIE_APB_ERR_EN, val);
|
|
}
|
|
}
|
|
|
|
static int iproc_pcie_config_read32(const struct udevice *bus, pci_dev_t bdf,
|
|
uint offset, ulong *valuep,
|
|
enum pci_size_t size)
|
|
{
|
|
struct iproc_pcie *pcie = dev_get_priv(bus);
|
|
int ret;
|
|
ulong data;
|
|
|
|
iproc_pcie_apb_err_disable(bus, bdf, true);
|
|
ret = pci_generic_mmap_read_config(bus, iproc_pcie_map_ep_cfg_reg,
|
|
bdf, offset, &data, PCI_SIZE_32);
|
|
iproc_pcie_apb_err_disable(bus, bdf, false);
|
|
if (size <= PCI_SIZE_16)
|
|
*valuep = (data >> (8 * (offset & 3))) &
|
|
((1 << (BIT(size) * 8)) - 1);
|
|
else
|
|
*valuep = data;
|
|
|
|
if (!ret && PCI_BUS(bdf) == 0)
|
|
iproc_pcie_fix_cap(pcie, offset, valuep);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int iproc_pcie_config_write32(struct udevice *bus, pci_dev_t bdf,
|
|
uint offset, ulong value,
|
|
enum pci_size_t size)
|
|
{
|
|
void *addr;
|
|
ulong mask, tmp;
|
|
int ret;
|
|
|
|
ret = iproc_pcie_map_ep_cfg_reg(bus, bdf, offset, &addr);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (size == PCI_SIZE_32) {
|
|
writel(value, addr);
|
|
return ret;
|
|
}
|
|
|
|
iproc_pcie_apb_err_disable(bus, bdf, true);
|
|
mask = ~(((1 << (BIT(size) * 8)) - 1) << ((offset & 0x3) * 8));
|
|
tmp = readl(addr) & mask;
|
|
tmp |= (value << ((offset & 0x3) * 8));
|
|
writel(tmp, addr);
|
|
iproc_pcie_apb_err_disable(bus, bdf, false);
|
|
|
|
return ret;
|
|
}
|
|
|
|
const static struct dm_pci_ops iproc_pcie_ops = {
|
|
.read_config = iproc_pcie_config_read32,
|
|
.write_config = iproc_pcie_config_write32,
|
|
};
|
|
|
|
static int iproc_pcie_rev_init(struct iproc_pcie *pcie)
|
|
{
|
|
unsigned int reg_idx;
|
|
const u16 *regs;
|
|
u16 num_elements;
|
|
|
|
switch (pcie->type) {
|
|
case IPROC_PCIE_PAXC_V2:
|
|
pcie->ep_is_internal = true;
|
|
regs = iproc_pcie_reg_paxc_v2;
|
|
num_elements = ARRAY_SIZE(iproc_pcie_reg_paxc_v2);
|
|
break;
|
|
case IPROC_PCIE_PAXB_V2:
|
|
regs = iproc_pcie_reg_paxb_v2;
|
|
num_elements = ARRAY_SIZE(iproc_pcie_reg_paxb_v2);
|
|
pcie->has_apb_err_disable = true;
|
|
if (pcie->need_ob_cfg) {
|
|
pcie->ob.axi_offset = 0;
|
|
pcie->ob_map = paxb_v2_ob_map;
|
|
pcie->ob.nr_windows = ARRAY_SIZE(paxb_v2_ob_map);
|
|
}
|
|
pcie->need_ib_cfg = true;
|
|
pcie->ib.nr_regions = ARRAY_SIZE(paxb_v2_ib_map);
|
|
pcie->ib_map = paxb_v2_ib_map;
|
|
break;
|
|
default:
|
|
dev_dbg(pcie->dev, "incompatible iProc PCIe interface\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
pcie->reg_offsets = calloc(IPROC_PCIE_MAX_NUM_REG,
|
|
sizeof(*pcie->reg_offsets));
|
|
if (!pcie->reg_offsets)
|
|
return -ENOMEM;
|
|
|
|
/* go through the register table and populate all valid registers */
|
|
pcie->reg_offsets[0] = (pcie->type == IPROC_PCIE_PAXC_V2) ?
|
|
IPROC_PCIE_REG_INVALID : regs[0];
|
|
for (reg_idx = 1; reg_idx < num_elements; reg_idx++)
|
|
pcie->reg_offsets[reg_idx] = regs[reg_idx] ?
|
|
regs[reg_idx] : IPROC_PCIE_REG_INVALID;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline bool iproc_pcie_ob_is_valid(struct iproc_pcie *pcie,
|
|
int window_idx)
|
|
{
|
|
u32 val;
|
|
|
|
val = iproc_pcie_read_reg(pcie, MAP_REG(IPROC_PCIE_OARR0, window_idx));
|
|
|
|
return !!(val & OARR_VALID);
|
|
}
|
|
|
|
static inline int iproc_pcie_ob_write(struct iproc_pcie *pcie, int window_idx,
|
|
int size_idx, u64 axi_addr, u64 pci_addr)
|
|
{
|
|
u16 oarr_offset, omap_offset;
|
|
|
|
/*
|
|
* Derive the OARR/OMAP offset from the first pair (OARR0/OMAP0) based
|
|
* on window index.
|
|
*/
|
|
oarr_offset = iproc_pcie_reg_offset(pcie, MAP_REG(IPROC_PCIE_OARR0,
|
|
window_idx));
|
|
omap_offset = iproc_pcie_reg_offset(pcie, MAP_REG(IPROC_PCIE_OMAP0,
|
|
window_idx));
|
|
if (iproc_pcie_reg_is_invalid(oarr_offset) ||
|
|
iproc_pcie_reg_is_invalid(omap_offset))
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* Program the OARR registers. The upper 32-bit OARR register is
|
|
* always right after the lower 32-bit OARR register.
|
|
*/
|
|
writel(lower_32_bits(axi_addr) | (size_idx << OARR_SIZE_CFG_SHIFT) |
|
|
OARR_VALID, pcie->base + oarr_offset);
|
|
writel(upper_32_bits(axi_addr), pcie->base + oarr_offset + 4);
|
|
|
|
/* now program the OMAP registers */
|
|
writel(lower_32_bits(pci_addr), pcie->base + omap_offset);
|
|
writel(upper_32_bits(pci_addr), pcie->base + omap_offset + 4);
|
|
|
|
debug("ob window [%d]: offset 0x%x axi %pap pci %pap\n",
|
|
window_idx, oarr_offset, &axi_addr, &pci_addr);
|
|
debug("oarr lo 0x%x oarr hi 0x%x\n",
|
|
readl(pcie->base + oarr_offset),
|
|
readl(pcie->base + oarr_offset + 4));
|
|
debug("omap lo 0x%x omap hi 0x%x\n",
|
|
readl(pcie->base + omap_offset),
|
|
readl(pcie->base + omap_offset + 4));
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* iproc_pcie_setup_ob() - setup outbound address mapping
|
|
*
|
|
* Some iProc SoCs require the SW to configure the outbound address mapping
|
|
* Outbound address translation:
|
|
*
|
|
* iproc_pcie_address = axi_address - axi_offset
|
|
* OARR = iproc_pcie_address
|
|
* OMAP = pci_addr
|
|
* axi_addr -> iproc_pcie_address -> OARR -> OMAP -> pci_address
|
|
*
|
|
* @pcie: pcie device
|
|
* @axi_addr: axi address to be translated
|
|
* @pci_addr: pci address
|
|
* @size: window size
|
|
*
|
|
* @return: 0 on success and -ve on failure
|
|
*/
|
|
static int iproc_pcie_setup_ob(struct iproc_pcie *pcie, u64 axi_addr,
|
|
u64 pci_addr, resource_size_t size)
|
|
{
|
|
struct iproc_pcie_ob *ob = &pcie->ob;
|
|
int ret = -EINVAL, window_idx, size_idx;
|
|
|
|
if (axi_addr < ob->axi_offset) {
|
|
pr_err("axi address %pap less than offset %pap\n",
|
|
&axi_addr, &ob->axi_offset);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Translate the AXI address to the internal address used by the iProc
|
|
* PCIe core before programming the OARR
|
|
*/
|
|
axi_addr -= ob->axi_offset;
|
|
|
|
/* iterate through all OARR/OMAP mapping windows */
|
|
for (window_idx = ob->nr_windows - 1; window_idx >= 0; window_idx--) {
|
|
const struct iproc_pcie_ob_map *ob_map =
|
|
&pcie->ob_map[window_idx];
|
|
|
|
/*
|
|
* If current outbound window is already in use, move on to the
|
|
* next one.
|
|
*/
|
|
if (iproc_pcie_ob_is_valid(pcie, window_idx))
|
|
continue;
|
|
|
|
/*
|
|
* Iterate through all supported window sizes within the
|
|
* OARR/OMAP pair to find a match. Go through the window sizes
|
|
* in a descending order.
|
|
*/
|
|
for (size_idx = ob_map->nr_sizes - 1; size_idx >= 0;
|
|
size_idx--) {
|
|
resource_size_t window_size =
|
|
ob_map->window_sizes[size_idx] * SZ_1M;
|
|
|
|
/*
|
|
* Keep iterating until we reach the last window and
|
|
* with the minimal window size at index zero. In this
|
|
* case, we take a compromise by mapping it using the
|
|
* minimum window size that can be supported
|
|
*/
|
|
if (size < window_size) {
|
|
if (size_idx > 0 || window_idx > 0)
|
|
continue;
|
|
|
|
/*
|
|
* For the corner case of reaching the minimal
|
|
* window size that can be supported on the
|
|
* last window
|
|
*/
|
|
axi_addr = ALIGN_DOWN(axi_addr, window_size);
|
|
pci_addr = ALIGN_DOWN(pci_addr, window_size);
|
|
size = window_size;
|
|
}
|
|
|
|
if (!IS_ALIGNED(axi_addr, window_size) ||
|
|
!IS_ALIGNED(pci_addr, window_size)) {
|
|
pr_err("axi %pap or pci %pap not aligned\n",
|
|
&axi_addr, &pci_addr);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Match found! Program both OARR and OMAP and mark
|
|
* them as a valid entry.
|
|
*/
|
|
ret = iproc_pcie_ob_write(pcie, window_idx, size_idx,
|
|
axi_addr, pci_addr);
|
|
if (ret)
|
|
goto err_ob;
|
|
|
|
size -= window_size;
|
|
if (size == 0)
|
|
return 0;
|
|
|
|
/*
|
|
* If we are here, we are done with the current window,
|
|
* but not yet finished all mappings. Need to move on
|
|
* to the next window.
|
|
*/
|
|
axi_addr += window_size;
|
|
pci_addr += window_size;
|
|
break;
|
|
}
|
|
}
|
|
|
|
err_ob:
|
|
pr_err("unable to configure outbound mapping\n");
|
|
pr_err("axi %pap, axi offset %pap, pci %pap, res size %pap\n",
|
|
&axi_addr, &ob->axi_offset, &pci_addr, &size);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int iproc_pcie_map_ranges(struct udevice *dev)
|
|
{
|
|
struct iproc_pcie *pcie = dev_get_priv(dev);
|
|
struct udevice *bus = pci_get_controller(dev);
|
|
struct pci_controller *hose = dev_get_uclass_priv(bus);
|
|
int i, ret;
|
|
|
|
for (i = 0; i < hose->region_count; i++) {
|
|
if (hose->regions[i].flags == PCI_REGION_MEM ||
|
|
hose->regions[i].flags == PCI_REGION_PREFETCH) {
|
|
debug("%d: bus_addr %p, axi_addr %p, size 0x%llx\n",
|
|
i, &hose->regions[i].bus_start,
|
|
&hose->regions[i].phys_start,
|
|
hose->regions[i].size);
|
|
ret = iproc_pcie_setup_ob(pcie,
|
|
hose->regions[i].phys_start,
|
|
hose->regions[i].bus_start,
|
|
hose->regions[i].size);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline bool iproc_pcie_ib_is_in_use(struct iproc_pcie *pcie,
|
|
int region_idx)
|
|
{
|
|
const struct iproc_pcie_ib_map *ib_map = &pcie->ib_map[region_idx];
|
|
u32 val;
|
|
|
|
val = iproc_pcie_read_reg(pcie, MAP_REG(IPROC_PCIE_IARR0, region_idx));
|
|
|
|
return !!(val & (BIT(ib_map->nr_sizes) - 1));
|
|
}
|
|
|
|
static inline bool
|
|
iproc_pcie_ib_check_type(const struct iproc_pcie_ib_map *ib_map,
|
|
enum iproc_pcie_ib_map_type type)
|
|
{
|
|
return !!(ib_map->type == type);
|
|
}
|
|
|
|
static int iproc_pcie_ib_write(struct iproc_pcie *pcie, int region_idx,
|
|
int size_idx, int nr_windows, u64 axi_addr,
|
|
u64 pci_addr, resource_size_t size)
|
|
{
|
|
const struct iproc_pcie_ib_map *ib_map = &pcie->ib_map[region_idx];
|
|
u16 iarr_offset, imap_offset;
|
|
u32 val;
|
|
int window_idx;
|
|
|
|
iarr_offset = iproc_pcie_reg_offset(pcie, MAP_REG(IPROC_PCIE_IARR0,
|
|
region_idx));
|
|
imap_offset = iproc_pcie_reg_offset(pcie, MAP_REG(IPROC_PCIE_IMAP0,
|
|
region_idx));
|
|
if (iproc_pcie_reg_is_invalid(iarr_offset) ||
|
|
iproc_pcie_reg_is_invalid(imap_offset))
|
|
return -EINVAL;
|
|
|
|
debug("ib region [%d]: offset 0x%x axi %pap pci %pap\n",
|
|
region_idx, iarr_offset, &axi_addr, &pci_addr);
|
|
|
|
/*
|
|
* Program the IARR registers. The upper 32-bit IARR register is
|
|
* always right after the lower 32-bit IARR register.
|
|
*/
|
|
writel(lower_32_bits(pci_addr) | BIT(size_idx),
|
|
pcie->base + iarr_offset);
|
|
writel(upper_32_bits(pci_addr), pcie->base + iarr_offset + 4);
|
|
|
|
debug("iarr lo 0x%x iarr hi 0x%x\n",
|
|
readl(pcie->base + iarr_offset),
|
|
readl(pcie->base + iarr_offset + 4));
|
|
|
|
/*
|
|
* Now program the IMAP registers. Each IARR region may have one or
|
|
* more IMAP windows.
|
|
*/
|
|
size >>= ilog2(nr_windows);
|
|
for (window_idx = 0; window_idx < nr_windows; window_idx++) {
|
|
val = readl(pcie->base + imap_offset);
|
|
val |= lower_32_bits(axi_addr) | IMAP_VALID;
|
|
writel(val, pcie->base + imap_offset);
|
|
writel(upper_32_bits(axi_addr),
|
|
pcie->base + imap_offset + ib_map->imap_addr_offset);
|
|
|
|
debug("imap window [%d] lo 0x%x hi 0x%x\n",
|
|
window_idx, readl(pcie->base + imap_offset),
|
|
readl(pcie->base + imap_offset +
|
|
ib_map->imap_addr_offset));
|
|
|
|
imap_offset += ib_map->imap_window_offset;
|
|
axi_addr += size;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* iproc_pcie_setup_ib() - setup inbound address mapping
|
|
*
|
|
* @pcie: pcie device
|
|
* @axi_addr: axi address to be translated
|
|
* @pci_addr: pci address
|
|
* @size: window size
|
|
* @type: inbound mapping type
|
|
*
|
|
* @return: 0 on success and -ve on failure
|
|
*/
|
|
static int iproc_pcie_setup_ib(struct iproc_pcie *pcie, u64 axi_addr,
|
|
u64 pci_addr, resource_size_t size,
|
|
enum iproc_pcie_ib_map_type type)
|
|
{
|
|
struct iproc_pcie_ib *ib = &pcie->ib;
|
|
int ret;
|
|
unsigned int region_idx, size_idx;
|
|
|
|
/* iterate through all IARR mapping regions */
|
|
for (region_idx = 0; region_idx < ib->nr_regions; region_idx++) {
|
|
const struct iproc_pcie_ib_map *ib_map =
|
|
&pcie->ib_map[region_idx];
|
|
|
|
/*
|
|
* If current inbound region is already in use or not a
|
|
* compatible type, move on to the next.
|
|
*/
|
|
if (iproc_pcie_ib_is_in_use(pcie, region_idx) ||
|
|
!iproc_pcie_ib_check_type(ib_map, type))
|
|
continue;
|
|
|
|
/* iterate through all supported region sizes to find a match */
|
|
for (size_idx = 0; size_idx < ib_map->nr_sizes; size_idx++) {
|
|
resource_size_t region_size =
|
|
ib_map->region_sizes[size_idx] * ib_map->size_unit;
|
|
|
|
if (size != region_size)
|
|
continue;
|
|
|
|
if (!IS_ALIGNED(axi_addr, region_size) ||
|
|
!IS_ALIGNED(pci_addr, region_size)) {
|
|
pr_err("axi %pap or pci %pap not aligned\n",
|
|
&axi_addr, &pci_addr);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Match found! Program IARR and all IMAP windows. */
|
|
ret = iproc_pcie_ib_write(pcie, region_idx, size_idx,
|
|
ib_map->nr_windows, axi_addr,
|
|
pci_addr, size);
|
|
if (ret)
|
|
goto err_ib;
|
|
else
|
|
return 0;
|
|
}
|
|
}
|
|
ret = -EINVAL;
|
|
|
|
err_ib:
|
|
pr_err("unable to configure inbound mapping\n");
|
|
pr_err("axi %pap, pci %pap, res size %pap\n",
|
|
&axi_addr, &pci_addr, &size);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int iproc_pcie_map_dma_ranges(struct iproc_pcie *pcie)
|
|
{
|
|
int ret;
|
|
struct pci_region regions;
|
|
int i = 0;
|
|
|
|
while (!pci_get_dma_regions(pcie->dev, ®ions, i)) {
|
|
dev_dbg(pcie->dev,
|
|
"dma %d: bus_addr %#llx, axi_addr %#llx, size %#llx\n",
|
|
i, regions.bus_start, regions.phys_start, regions.size);
|
|
|
|
/* Each range entry corresponds to an inbound mapping region */
|
|
ret = iproc_pcie_setup_ib(pcie, regions.phys_start,
|
|
regions.bus_start,
|
|
regions.size,
|
|
IPROC_PCIE_IB_MAP_MEM);
|
|
if (ret)
|
|
return ret;
|
|
i++;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void iproc_pcie_reset_map_regs(struct iproc_pcie *pcie)
|
|
{
|
|
struct iproc_pcie_ib *ib = &pcie->ib;
|
|
struct iproc_pcie_ob *ob = &pcie->ob;
|
|
int window_idx, region_idx;
|
|
|
|
if (pcie->ep_is_internal)
|
|
return;
|
|
|
|
/* iterate through all OARR mapping regions */
|
|
for (window_idx = ob->nr_windows - 1; window_idx >= 0; window_idx--) {
|
|
iproc_pcie_write_reg(pcie, MAP_REG(IPROC_PCIE_OARR0,
|
|
window_idx), 0);
|
|
}
|
|
|
|
/* iterate through all IARR mapping regions */
|
|
for (region_idx = 0; region_idx < ib->nr_regions; region_idx++) {
|
|
iproc_pcie_write_reg(pcie, MAP_REG(IPROC_PCIE_IARR0,
|
|
region_idx), 0);
|
|
}
|
|
}
|
|
|
|
static void iproc_pcie_reset(struct iproc_pcie *pcie)
|
|
{
|
|
u32 val;
|
|
|
|
/*
|
|
* PAXC and the internal emulated endpoint device downstream should not
|
|
* be reset. If firmware has been loaded on the endpoint device at an
|
|
* earlier boot stage, reset here causes issues.
|
|
*/
|
|
if (pcie->ep_is_internal)
|
|
return;
|
|
|
|
/*
|
|
* Select perst_b signal as reset source. Put the device into reset,
|
|
* and then bring it out of reset
|
|
*/
|
|
val = iproc_pcie_read_reg(pcie, IPROC_PCIE_CLK_CTRL);
|
|
val &= ~EP_PERST_SOURCE_SELECT & ~EP_MODE_SURVIVE_PERST &
|
|
~RC_PCIE_RST_OUTPUT;
|
|
iproc_pcie_write_reg(pcie, IPROC_PCIE_CLK_CTRL, val);
|
|
udelay(250);
|
|
|
|
val |= RC_PCIE_RST_OUTPUT;
|
|
iproc_pcie_write_reg(pcie, IPROC_PCIE_CLK_CTRL, val);
|
|
mdelay(100);
|
|
}
|
|
|
|
static inline bool iproc_pcie_link_is_active(struct iproc_pcie *pcie)
|
|
{
|
|
u32 val;
|
|
|
|
val = iproc_pcie_read_reg(pcie, IPROC_PCIE_LINK_STATUS);
|
|
return !!((val & PCIE_PHYLINKUP) && (val & PCIE_DL_ACTIVE));
|
|
}
|
|
|
|
static int iproc_pcie_check_link(struct iproc_pcie *pcie)
|
|
{
|
|
u32 link_status, class;
|
|
|
|
pcie->link_is_active = false;
|
|
/* force class to PCI_CLASS_BRIDGE_PCI (0x0604) */
|
|
#define PCI_BRIDGE_CTRL_REG_OFFSET 0x43c
|
|
#define PCI_CLASS_BRIDGE_MASK 0xffff00
|
|
#define PCI_CLASS_BRIDGE_SHIFT 8
|
|
iproc_pci_raw_config_read32(pcie, 0,
|
|
PCI_BRIDGE_CTRL_REG_OFFSET,
|
|
4, &class);
|
|
class &= ~PCI_CLASS_BRIDGE_MASK;
|
|
class |= (PCI_CLASS_BRIDGE_PCI << PCI_CLASS_BRIDGE_SHIFT);
|
|
iproc_pci_raw_config_write32(pcie, 0,
|
|
PCI_BRIDGE_CTRL_REG_OFFSET,
|
|
4, class);
|
|
|
|
/*
|
|
* PAXC connects to emulated endpoint devices directly and does not
|
|
* have a Serdes. Therefore skip the link detection logic here.
|
|
*/
|
|
if (pcie->ep_is_internal) {
|
|
pcie->link_is_active = true;
|
|
return 0;
|
|
}
|
|
|
|
if (!iproc_pcie_link_is_active(pcie)) {
|
|
pr_err("PHY or data link is INACTIVE!\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
#define PCI_TARGET_LINK_SPEED_MASK 0xf
|
|
#define PCI_TARGET_LINK_WIDTH_MASK 0x3f
|
|
#define PCI_TARGET_LINK_WIDTH_OFFSET 0x4
|
|
|
|
/* check link status to see if link is active */
|
|
iproc_pci_raw_config_read32(pcie, 0,
|
|
IPROC_PCI_EXP_CAP + PCI_EXP_LNKSTA,
|
|
2, &link_status);
|
|
if (link_status & PCI_EXP_LNKSTA_NLW)
|
|
pcie->link_is_active = true;
|
|
|
|
if (pcie->link_is_active)
|
|
pr_info("link UP @ Speed Gen-%d and width-x%d\n",
|
|
link_status & PCI_TARGET_LINK_SPEED_MASK,
|
|
(link_status >> PCI_TARGET_LINK_WIDTH_OFFSET) &
|
|
PCI_TARGET_LINK_WIDTH_MASK);
|
|
else
|
|
pr_info("link DOWN\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int iproc_pcie_probe(struct udevice *dev)
|
|
{
|
|
struct iproc_pcie *pcie = dev_get_priv(dev);
|
|
int ret;
|
|
|
|
pcie->type = (enum iproc_pcie_type)dev_get_driver_data(dev);
|
|
debug("PAX type %d\n", pcie->type);
|
|
pcie->base = dev_read_addr_ptr(dev);
|
|
debug("PAX reg base %p\n", pcie->base);
|
|
|
|
if (!pcie->base)
|
|
return -ENODEV;
|
|
|
|
if (dev_read_bool(dev, "brcm,pcie-ob"))
|
|
pcie->need_ob_cfg = true;
|
|
|
|
pcie->dev = dev;
|
|
ret = iproc_pcie_rev_init(pcie);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (!pcie->ep_is_internal) {
|
|
ret = generic_phy_get_by_name(dev, "pcie-phy", &pcie->phy);
|
|
if (!ret) {
|
|
ret = generic_phy_init(&pcie->phy);
|
|
if (ret) {
|
|
pr_err("failed to init %s PHY\n", dev->name);
|
|
return ret;
|
|
}
|
|
|
|
ret = generic_phy_power_on(&pcie->phy);
|
|
if (ret) {
|
|
pr_err("power on %s PHY failed\n", dev->name);
|
|
goto err_exit_phy;
|
|
}
|
|
}
|
|
}
|
|
|
|
iproc_pcie_reset(pcie);
|
|
|
|
if (pcie->need_ob_cfg) {
|
|
ret = iproc_pcie_map_ranges(dev);
|
|
if (ret) {
|
|
pr_err("outbound map failed\n");
|
|
goto err_power_off_phy;
|
|
}
|
|
}
|
|
|
|
if (pcie->need_ib_cfg) {
|
|
ret = iproc_pcie_map_dma_ranges(pcie);
|
|
if (ret) {
|
|
pr_err("inbound map failed\n");
|
|
goto err_power_off_phy;
|
|
}
|
|
}
|
|
|
|
if (iproc_pcie_check_link(pcie))
|
|
pr_info("no PCIe EP device detected\n");
|
|
|
|
return 0;
|
|
|
|
err_power_off_phy:
|
|
generic_phy_power_off(&pcie->phy);
|
|
err_exit_phy:
|
|
generic_phy_exit(&pcie->phy);
|
|
return ret;
|
|
}
|
|
|
|
static int iproc_pcie_remove(struct udevice *dev)
|
|
{
|
|
struct iproc_pcie *pcie = dev_get_priv(dev);
|
|
int ret;
|
|
|
|
iproc_pcie_reset_map_regs(pcie);
|
|
|
|
if (generic_phy_valid(&pcie->phy)) {
|
|
ret = generic_phy_power_off(&pcie->phy);
|
|
if (ret) {
|
|
pr_err("failed to power off PCIe phy\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = generic_phy_exit(&pcie->phy);
|
|
if (ret) {
|
|
pr_err("failed to power off PCIe phy\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct udevice_id pci_iproc_ids[] = {
|
|
{ .compatible = "brcm,iproc-pcie-paxb-v2",
|
|
.data = IPROC_PCIE_PAXB_V2 },
|
|
{ .compatible = "brcm,iproc-pcie-paxc-v2",
|
|
.data = IPROC_PCIE_PAXC_V2 },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(pci_iproc) = {
|
|
.name = "pci_iproc",
|
|
.id = UCLASS_PCI,
|
|
.of_match = pci_iproc_ids,
|
|
.ops = &iproc_pcie_ops,
|
|
.probe = iproc_pcie_probe,
|
|
.remove = iproc_pcie_remove,
|
|
.priv_auto = sizeof(struct iproc_pcie),
|
|
.flags = DM_FLAG_OS_PREPARE,
|
|
};
|