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4e0e161d3c
Having to call qe_ic_init() from platform-specific code makes it awkward to allow building the QE drivers for ARM. It's also a needless duplication of code, and slightly error-prone: Instead of the caller needing to know the details of whether the QUICC Engine High and QUICC Engine Low are actually the same interrupt (see e.g. the machine_is() in mpc85xx_mds_qeic_init), just let the init function choose the appropriate handlers after it has parsed the DT and figured it out. If the two interrupts are distinct, use separate handlers, otherwise use the handler which first checks the CHIVEC register (for the high priority interrupts), then the CIVEC. All existing callers pass 0 for flags, so continue to do that from the new single caller. Later cleanups will remove that argument from qe_ic_init and simplify the body, as well as make qe_ic_init into a proper init function for an IRQCHIP_DECLARE, eliminating the need to manually look up the fsl,qe-ic node. Reviewed-by: Timur Tabi <timur@kernel.org> Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Li Yang <leoyang.li@nxp.com>
400 lines
8.6 KiB
C
400 lines
8.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2006-2010, 2012-2013 Freescale Semiconductor, Inc.
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* All rights reserved.
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*
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* Author: Andy Fleming <afleming@freescale.com>
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*
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* Based on 83xx/mpc8360e_pb.c by:
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* Li Yang <LeoLi@freescale.com>
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* Yin Olivia <Hong-hua.Yin@freescale.com>
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*
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* Description:
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* MPC85xx MDS board specific routines.
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*/
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#include <linux/stddef.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/reboot.h>
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#include <linux/pci.h>
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#include <linux/kdev_t.h>
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#include <linux/major.h>
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#include <linux/console.h>
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#include <linux/delay.h>
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#include <linux/seq_file.h>
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#include <linux/initrd.h>
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#include <linux/fsl_devices.h>
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#include <linux/of_platform.h>
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#include <linux/of_device.h>
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#include <linux/phy.h>
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#include <linux/memblock.h>
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#include <linux/fsl/guts.h>
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#include <linux/atomic.h>
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#include <asm/time.h>
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#include <asm/io.h>
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#include <asm/machdep.h>
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#include <asm/pci-bridge.h>
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#include <asm/irq.h>
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#include <mm/mmu_decl.h>
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#include <asm/prom.h>
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#include <asm/udbg.h>
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#include <sysdev/fsl_soc.h>
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#include <sysdev/fsl_pci.h>
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#include <soc/fsl/qe/qe.h>
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#include <asm/mpic.h>
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#include <asm/swiotlb.h>
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#include "smp.h"
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#include "mpc85xx.h"
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#undef DEBUG
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#ifdef DEBUG
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#define DBG(fmt...) udbg_printf(fmt)
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#else
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#define DBG(fmt...)
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#endif
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#if IS_BUILTIN(CONFIG_PHYLIB)
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#define MV88E1111_SCR 0x10
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#define MV88E1111_SCR_125CLK 0x0010
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static int mpc8568_fixup_125_clock(struct phy_device *phydev)
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{
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int scr;
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int err;
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/* Workaround for the 125 CLK Toggle */
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scr = phy_read(phydev, MV88E1111_SCR);
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if (scr < 0)
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return scr;
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err = phy_write(phydev, MV88E1111_SCR, scr & ~(MV88E1111_SCR_125CLK));
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if (err)
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return err;
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err = phy_write(phydev, MII_BMCR, BMCR_RESET);
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if (err)
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return err;
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scr = phy_read(phydev, MV88E1111_SCR);
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if (scr < 0)
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return scr;
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err = phy_write(phydev, MV88E1111_SCR, scr | 0x0008);
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return err;
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}
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static int mpc8568_mds_phy_fixups(struct phy_device *phydev)
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{
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int temp;
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int err;
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/* Errata */
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err = phy_write(phydev,29, 0x0006);
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if (err)
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return err;
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temp = phy_read(phydev, 30);
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if (temp < 0)
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return temp;
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temp = (temp & (~0x8000)) | 0x4000;
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err = phy_write(phydev,30, temp);
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if (err)
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return err;
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err = phy_write(phydev,29, 0x000a);
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if (err)
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return err;
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temp = phy_read(phydev, 30);
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if (temp < 0)
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return temp;
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temp = phy_read(phydev, 30);
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if (temp < 0)
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return temp;
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temp &= ~0x0020;
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err = phy_write(phydev,30,temp);
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if (err)
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return err;
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/* Disable automatic MDI/MDIX selection */
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temp = phy_read(phydev, 16);
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if (temp < 0)
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return temp;
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temp &= ~0x0060;
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err = phy_write(phydev,16,temp);
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return err;
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}
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#endif
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/* ************************************************************************
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*
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* Setup the architecture
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*
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*/
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#ifdef CONFIG_QUICC_ENGINE
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static void __init mpc85xx_mds_reset_ucc_phys(void)
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{
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struct device_node *np;
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static u8 __iomem *bcsr_regs;
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/* Map BCSR area */
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np = of_find_node_by_name(NULL, "bcsr");
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if (!np)
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return;
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bcsr_regs = of_iomap(np, 0);
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of_node_put(np);
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if (!bcsr_regs)
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return;
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if (machine_is(mpc8568_mds)) {
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#define BCSR_UCC1_GETH_EN (0x1 << 7)
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#define BCSR_UCC2_GETH_EN (0x1 << 7)
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#define BCSR_UCC1_MODE_MSK (0x3 << 4)
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#define BCSR_UCC2_MODE_MSK (0x3 << 0)
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/* Turn off UCC1 & UCC2 */
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clrbits8(&bcsr_regs[8], BCSR_UCC1_GETH_EN);
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clrbits8(&bcsr_regs[9], BCSR_UCC2_GETH_EN);
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/* Mode is RGMII, all bits clear */
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clrbits8(&bcsr_regs[11], BCSR_UCC1_MODE_MSK |
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BCSR_UCC2_MODE_MSK);
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/* Turn UCC1 & UCC2 on */
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setbits8(&bcsr_regs[8], BCSR_UCC1_GETH_EN);
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setbits8(&bcsr_regs[9], BCSR_UCC2_GETH_EN);
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} else if (machine_is(mpc8569_mds)) {
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#define BCSR7_UCC12_GETHnRST (0x1 << 2)
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#define BCSR8_UEM_MARVELL_RST (0x1 << 1)
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#define BCSR_UCC_RGMII (0x1 << 6)
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#define BCSR_UCC_RTBI (0x1 << 5)
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/*
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* U-Boot mangles interrupt polarity for Marvell PHYs,
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* so reset built-in and UEM Marvell PHYs, this puts
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* the PHYs into their normal state.
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*/
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clrbits8(&bcsr_regs[7], BCSR7_UCC12_GETHnRST);
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setbits8(&bcsr_regs[8], BCSR8_UEM_MARVELL_RST);
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setbits8(&bcsr_regs[7], BCSR7_UCC12_GETHnRST);
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clrbits8(&bcsr_regs[8], BCSR8_UEM_MARVELL_RST);
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for_each_compatible_node(np, "network", "ucc_geth") {
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const unsigned int *prop;
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int ucc_num;
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prop = of_get_property(np, "cell-index", NULL);
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if (prop == NULL)
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continue;
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ucc_num = *prop - 1;
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prop = of_get_property(np, "phy-connection-type", NULL);
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if (prop == NULL)
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continue;
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if (strcmp("rtbi", (const char *)prop) == 0)
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clrsetbits_8(&bcsr_regs[7 + ucc_num],
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BCSR_UCC_RGMII, BCSR_UCC_RTBI);
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}
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} else if (machine_is(p1021_mds)) {
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#define BCSR11_ENET_MICRST (0x1 << 5)
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/* Reset Micrel PHY */
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clrbits8(&bcsr_regs[11], BCSR11_ENET_MICRST);
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setbits8(&bcsr_regs[11], BCSR11_ENET_MICRST);
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}
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iounmap(bcsr_regs);
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}
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static void __init mpc85xx_mds_qe_init(void)
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{
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struct device_node *np;
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mpc85xx_qe_par_io_init();
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mpc85xx_mds_reset_ucc_phys();
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if (machine_is(p1021_mds)) {
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struct ccsr_guts __iomem *guts;
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np = of_find_node_by_name(NULL, "global-utilities");
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if (np) {
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guts = of_iomap(np, 0);
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if (!guts)
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pr_err("mpc85xx-rdb: could not map global utilities register\n");
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else{
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/* P1021 has pins muxed for QE and other functions. To
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* enable QE UEC mode, we need to set bit QE0 for UCC1
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* in Eth mode, QE0 and QE3 for UCC5 in Eth mode, QE9
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* and QE12 for QE MII management signals in PMUXCR
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* register.
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*/
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setbits32(&guts->pmuxcr, MPC85xx_PMUXCR_QE(0) |
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MPC85xx_PMUXCR_QE(3) |
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MPC85xx_PMUXCR_QE(9) |
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MPC85xx_PMUXCR_QE(12));
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iounmap(guts);
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}
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of_node_put(np);
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}
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}
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}
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#else
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static void __init mpc85xx_mds_qe_init(void) { }
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#endif /* CONFIG_QUICC_ENGINE */
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static void __init mpc85xx_mds_setup_arch(void)
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{
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if (ppc_md.progress)
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ppc_md.progress("mpc85xx_mds_setup_arch()", 0);
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mpc85xx_smp_init();
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mpc85xx_mds_qe_init();
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fsl_pci_assign_primary();
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swiotlb_detect_4g();
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}
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#if IS_BUILTIN(CONFIG_PHYLIB)
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static int __init board_fixups(void)
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{
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char phy_id[20];
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char *compstrs[2] = {"fsl,gianfar-mdio", "fsl,ucc-mdio"};
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struct device_node *mdio;
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struct resource res;
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int i;
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for (i = 0; i < ARRAY_SIZE(compstrs); i++) {
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mdio = of_find_compatible_node(NULL, NULL, compstrs[i]);
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of_address_to_resource(mdio, 0, &res);
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snprintf(phy_id, sizeof(phy_id), "%llx:%02x",
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(unsigned long long)res.start, 1);
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phy_register_fixup_for_id(phy_id, mpc8568_fixup_125_clock);
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phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups);
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/* Register a workaround for errata */
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snprintf(phy_id, sizeof(phy_id), "%llx:%02x",
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(unsigned long long)res.start, 7);
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phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups);
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of_node_put(mdio);
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}
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return 0;
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}
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machine_arch_initcall(mpc8568_mds, board_fixups);
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machine_arch_initcall(mpc8569_mds, board_fixups);
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#endif
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static int __init mpc85xx_publish_devices(void)
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{
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return mpc85xx_common_publish_devices();
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}
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machine_arch_initcall(mpc8568_mds, mpc85xx_publish_devices);
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machine_arch_initcall(mpc8569_mds, mpc85xx_publish_devices);
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machine_arch_initcall(p1021_mds, mpc85xx_common_publish_devices);
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static void __init mpc85xx_mds_pic_init(void)
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{
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struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN |
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MPIC_SINGLE_DEST_CPU,
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0, 256, " OpenPIC ");
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BUG_ON(mpic == NULL);
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mpic_init(mpic);
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}
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static int __init mpc85xx_mds_probe(void)
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{
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return of_machine_is_compatible("MPC85xxMDS");
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}
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define_machine(mpc8568_mds) {
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.name = "MPC8568 MDS",
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.probe = mpc85xx_mds_probe,
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.setup_arch = mpc85xx_mds_setup_arch,
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.init_IRQ = mpc85xx_mds_pic_init,
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.get_irq = mpic_get_irq,
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.calibrate_decr = generic_calibrate_decr,
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.progress = udbg_progress,
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#ifdef CONFIG_PCI
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.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
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.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
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#endif
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};
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static int __init mpc8569_mds_probe(void)
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{
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return of_machine_is_compatible("fsl,MPC8569EMDS");
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}
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define_machine(mpc8569_mds) {
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.name = "MPC8569 MDS",
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.probe = mpc8569_mds_probe,
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.setup_arch = mpc85xx_mds_setup_arch,
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.init_IRQ = mpc85xx_mds_pic_init,
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.get_irq = mpic_get_irq,
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.calibrate_decr = generic_calibrate_decr,
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.progress = udbg_progress,
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#ifdef CONFIG_PCI
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.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
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.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
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#endif
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};
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static int __init p1021_mds_probe(void)
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{
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return of_machine_is_compatible("fsl,P1021MDS");
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}
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define_machine(p1021_mds) {
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.name = "P1021 MDS",
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.probe = p1021_mds_probe,
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.setup_arch = mpc85xx_mds_setup_arch,
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.init_IRQ = mpc85xx_mds_pic_init,
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.get_irq = mpic_get_irq,
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.calibrate_decr = generic_calibrate_decr,
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.progress = udbg_progress,
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#ifdef CONFIG_PCI
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.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
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.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
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#endif
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};
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