Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261320AbVCKURk (ORCPT ); Fri, 11 Mar 2005 15:17:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261317AbVCKUQl (ORCPT ); Fri, 11 Mar 2005 15:16:41 -0500 Received: from outmx023.isp.belgacom.be ([195.238.2.204]:65244 "EHLO outmx023.isp.belgacom.be") by vger.kernel.org with ESMTP id S261798AbVCKUI2 (ORCPT ); Fri, 11 Mar 2005 15:08:28 -0500 Message-ID: <4231FABA.2030809@246tNt.com> Date: Fri, 11 Mar 2005 21:08:26 +0100 From: Sylvain Munaut User-Agent: Mozilla Thunderbird 0.7.3 (X11/20040816) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Embedded PPC Linux list Cc: LKML , Tom Rini Subject: Re: [PATCH 2/2] MPC52xx updates : PCI Support References: <4231F9F9.5080506@246tNt.com> In-Reply-To: <4231F9F9.5080506@246tNt.com> X-Enigmail-Version: 0.85.0.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 19426 Lines: 590 And here's the second patch : # This is a BitKeeper generated diff -Nru style patch. # # ChangeSet # 2005/03/11 19:58:21+01:00 tnt@246tNt.com # ppc32: Add PCI bus support for Freescale MPC52xx # # Note that this support has "known" problem but theses # are believed to be due to hardware issues. # # Signed-off-by: Sylvain Munaut # # arch/ppc/syslib/mpc52xx_pci.h # 2005/03/11 19:57:56+01:00 tnt@246tNt.com +139 -0 # ppc32: Add PCI bus support for Freescale MPC52xx # # include/linux/pci_ids.h # 2005/03/11 19:57:56+01:00 tnt@246tNt.com +1 -0 # ppc32: Add PCI bus support for Freescale MPC52xx # # include/asm-ppc/mpc52xx.h # 2005/03/11 19:57:56+01:00 tnt@246tNt.com +2 -0 # ppc32: Add PCI bus support for Freescale MPC52xx # # arch/ppc/syslib/mpc52xx_pci.h # 2005/03/11 19:57:56+01:00 tnt@246tNt.com +0 -0 # BitKeeper file /home/tnt/musicbox/kernel/linux-2.5-mpc52xx-pending/arch/ppc/syslib/mpc52xx_pci.h # # arch/ppc/syslib/mpc52xx_pci.c # 2005/03/11 19:57:56+01:00 tnt@246tNt.com +235 -0 # ppc32: Add PCI bus support for Freescale MPC52xx # # arch/ppc/syslib/Makefile # 2005/03/11 19:57:56+01:00 tnt@246tNt.com +3 -0 # ppc32: Add PCI bus support for Freescale MPC52xx # # arch/ppc/platforms/lite5200.c # 2005/03/11 19:57:56+01:00 tnt@246tNt.com +33 -3 # ppc32: Add PCI bus support for Freescale MPC52xx # # arch/ppc/Kconfig # 2005/03/11 19:57:56+01:00 tnt@246tNt.com +1 -1 # ppc32: Add PCI bus support for Freescale MPC52xx # # arch/ppc/syslib/mpc52xx_pci.c # 2005/03/11 19:57:56+01:00 tnt@246tNt.com +0 -0 # BitKeeper file /home/tnt/musicbox/kernel/linux-2.5-mpc52xx-pending/arch/ppc/syslib/mpc52xx_pci.c # diff -Nru a/arch/ppc/Kconfig b/arch/ppc/Kconfig --- a/arch/ppc/Kconfig 2005-03-11 20:41:56 +01:00 +++ b/arch/ppc/Kconfig 2005-03-11 20:41:56 +01:00 @@ -1097,7 +1097,7 @@ bool config PCI - bool "PCI support" if 40x || CPM2 || 83xx || 85xx + bool "PCI support" if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx default y if !40x && !CPM2 && !8xx && !APUS && !83xx && !85xx default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS default PCI_QSPAN if !4xx && !CPM2 && 8xx diff -Nru a/arch/ppc/platforms/lite5200.c b/arch/ppc/platforms/lite5200.c --- a/arch/ppc/platforms/lite5200.c 2005-03-11 20:41:56 +01:00 +++ b/arch/ppc/platforms/lite5200.c 2005-03-11 20:41:56 +01:00 @@ -35,6 +35,8 @@ #include #include +#include + extern int powersave_nap; fdef CONFIG_PCI +static int +lite5200_map_irq(struct pci_dev *dev, unsigned char idsel, + unsigned char pin) { + return (pin == 1) && (idsel==24) ? MPC52xx_IRQ0 : -1; +} +#endif + static void __init lite5200_setup_cpu(void) { + struct mpc52xx_xlb __iomem *xlb; struct mpc52xx_intr __iomem *intr; u32 intr_ctrl; /* Map zones */ + xlb = ioremap(MPC52xx_XLB,sizeof(struct mpc52xx_xlb)); intr = ioremap(MPC52xx_INTR,sizeof(struct mpc52xx_intr)); - if (!intr) { - printk("lite5200.c: Error while mapping INTR during lite5200_setup_cpu\n"); + if (!xlb || !intr) { + printk("lite5200.c: Error while mapping XLB/INTR during lite5200_setup_cpu\n"); goto unmap_regs; } + /* Configure the XLB Arbiter */ + out_be32(&xlb->master_pri_enable, 0xff); + out_be32(&xlb->master_priority, 0x11111111); + + /* Enable ram snooping for 1GB window */ + out_be32(&xlb->config, in_be32(&xlb->config) | MPC52xx_XLB_CFG_SNOOP); + out_be32(&xlb->snoop_window, MPC52xx_PCI_TARGET_MEM | 0x1d); + /* IRQ[0-3] setup : IRQ0 - Level Active Low */ /* IRQ[1-3] - Level Active High */ intr_ctrl = in_be32(&intr->ctrl); @@ -103,6 +123,7 @@ /* Unmap reg zone */ unmap_regs: + if (xlb) iounmap(xlb); if (intr) iounmap(intr); } @@ -114,6 +135,11 @@ /* CPU & Port mux setup */ lite5200_setup_cpu(); + +#ifdef CONFIG_PCI + /* PCI Bridge setup */ + mpc52xx_find_bridges(); +#endif } void __init @@ -152,7 +178,7 @@ /* BAT setup */ mpc52xx_set_bat(); - /* No ISA bus AFAIK */ + /* No ISA bus by default */ isa_io_base = 0; isa_mem_base = 0; @@ -165,6 +191,10 @@ ppc_md.show_percpuinfo = NULL; ppc_md.init_IRQ = mpc52xx_init_irq; ppc_md.get_irq = mpc52xx_get_irq; + +#ifdef CONFIG_PCI + ppc_md.pci_map_irq = lite5200_map_irq; +#endif ppc_md.find_end_of_memory = mpc52xx_find_end_of_memory; ppc_md.setup_io_mappings = mpc52xx_map_io; diff -Nru a/arch/ppc/syslib/Makefile b/arch/ppc/syslib/Makefile --- a/arch/ppc/syslib/Makefile 2005-03-11 20:41:56 +01:00 +++ b/arch/ppc/syslib/Makefile 2005-03-11 20:41:56 +01:00 @@ -106,3 +106,6 @@ endif obj-$(CONFIG_MPC8555_CDS) += todc_time.o obj-$(CONFIG_PPC_MPC52xx) += mpc52xx_setup.o mpc52xx_pic.o +ifeq ($(CONFIG_PPC_MPC52xx),y) +obj-$(CONFIG_PCI) += mpc52xx_pci.o +endif diff -Nru a/arch/ppc/syslib/mpc52xx_pci.c b/arch/ppc/syslib/mpc52xx_pci.c --- /dev/null Wed Dec 31 16:00:00 196900 +++ b/arch/ppc/syslib/mpc52xx_pci.c 2005-03-11 20:41:56 +01:00 @@ -0,0 +1,235 @@ +/* + * arch/ppc/syslib/mpc52xx_pci.c + * + * PCI code for the Freescale MPC52xx embedded CPU. + * + * + * Maintainer : Sylvain Munaut + * + * Copyright (C) 2004 Sylvain Munaut + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +#include + +#include + +#include +#include "mpc52xx_pci.h" + +#include + + +static int +mpc52xx_pci_read_config(struct pci_bus *bus, unsigned int devfn, + int offset, int len, u32 *val) +{ + struct pci_controller *hose = bus->sysdata; + u32 value; + + if (ppc_md.pci_exclude_device) + if (ppc_md.pci_exclude_device(bus->number, devfn)) + return PCIBIOS_DEVICE_NOT_FOUND; + + out_be32(hose->cfg_addr, + (1 << 31) | + ((bus->number - hose->bus_offset) << 16) | + (devfn << 8) | + (offset & 0xfc)); + + value = in_le32(hose->cfg_data); + + if (len != 4) { + value >>= ((offset & 0x3) << 3); + value &= 0xffffffff >> (32 - (len << 3)); + } + + *val = value; + + out_be32(hose->cfg_addr, 0); + + return PCIBIOS_SUCCESSFUL; +} + +static int +mpc52xx_pci_write_config(struct pci_bus *bus, unsigned int devfn, + int offset, int len, u32 val) +{ + struct pci_controller *hose = bus->sysdata; + u32 value, mask; + + if (ppc_md.pci_exclude_device) + if (ppc_md.pci_exclude_device(bus->number, devfn)) + return PCIBIOS_DEVICE_NOT_FOUND; + + out_be32(hose->cfg_addr, + (1 << 31) | + ((bus->number - hose->bus_offset) << 16) | + (devfn << 8) | + (offset & 0xfc)); + + if (len != 4) { + value = in_le32(hose->cfg_data); + + offset = (offset & 0x3) << 3; + mask = (0xffffffff >> (32 - (len << 3))); + mask <<= offset; + + value &= ~mask; + val = value | ((val << offset) & mask); + } + + out_le32(hose->cfg_data, val); + + out_be32(hose->cfg_addr, 0); + + return PCIBIOS_SUCCESSFUL; +} + +static struct pci_ops mpc52xx_pci_ops = { + .read = mpc52xx_pci_read_config, + .write = mpc52xx_pci_write_config +}; + + +static void __init +mpc52xx_pci_setup(struct mpc52xx_pci __iomem *pci_regs) +{ + + /* Setup control regs */ + /* Nothing to do afaik */ + + /* Setup windows */ + out_be32(&pci_regs->iw0btar, MPC52xx_PCI_IWBTAR_TRANSLATION( + MPC52xx_PCI_MEM_START + MPC52xx_PCI_MEM_OFFSET, + MPC52xx_PCI_MEM_START, + MPC52xx_PCI_MEM_SIZE )); + + out_be32(&pci_regs->iw1btar, MPC52xx_PCI_IWBTAR_TRANSLATION( + MPC52xx_PCI_MMIO_START + MPC52xx_PCI_MEM_OFFSET, + MPC52xx_PCI_MMIO_START, + MPC52xx_PCI_MMIO_SIZE )); + + out_be32(&pci_regs->iw2btar, MPC52xx_PCI_IWBTAR_TRANSLATION( + MPC52xx_PCI_IO_BASE, + MPC52xx_PCI_IO_START, + MPC52xx_PCI_IO_SIZE )); + + out_be32(&pci_regs->iwcr, MPC52xx_PCI_IWCR_PACK( + ( MPC52xx_PCI_IWCR_ENABLE | /* iw0btar */ + MPC52xx_PCI_IWCR_READ_MULTI | + MPC52xx_PCI_IWCR_MEM ), + ( MPC52xx_PCI_IWCR_ENABLE | /* iw1btar */ + MPC52xx_PCI_IWCR_READ | + MPC52xx_PCI_IWCR_MEM ), + ( MPC52xx_PCI_IWCR_ENABLE | /* iw2btar */ + MPC52xx_PCI_IWCR_IO ) + )); + + + out_be32(&pci_regs->tbatr0, + MPC52xx_PCI_TBATR_ENABLE | MPC52xx_PCI_TARGET_IO ); + out_be32(&pci_regs->tbatr1, + MPC52xx_PCI_TBATR_ENABLE | MPC52xx_PCI_TARGET_MEM ); + + out_be32(&pci_regs->tcr, MPC52xx_PCI_TCR_LD); + + /* Reset the exteral bus ( internal PCI controller is NOT resetted ) */ + /* Not necessary and can be a bad thing if for example the bootloader + is displaying a splash screen or ... Just left here for + documentation purpose if anyone need it */ +#if 0 + u32 tmp; + tmp = in_be32(&pci_regs->gscr); + out_be32(&pci_regs->gscr, tmp | MPC52xx_PCI_GSCR_PR); + udelay(50); + out_be32(&pci_regs->gscr, tmp); +#endif +} + +static void __init +mpc52xx_pci_fixup_resources(struct pci_dev *dev) +{ + int i; + + /* We don't rely on boot loader for PCI and resets all + devices */ + for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { + struct resource *res = &dev->resource[i]; + if (res->end > res->start) { /* Only valid resources */ + res->end -= res->start; + res->start = 0; + res->flags |= IORESOURCE_UNSET; + } + } + + /* The PCI Host bridge of MPC52xx has a prefetch memory resource + fixed to 1Gb. Doesn't fit in the resource system so we remove it */ + if ( (dev->vendor == PCI_VENDOR_ID_MOTOROLA) && + (dev->device == PCI_DEVICE_ID_MOTOROLA_MPC5200) ) { + struct resource *res = &dev->resource[1]; + res->start = res->end = res->flags = 0; + } +} + +void __init +mpc52xx_find_bridges(void) +{ + struct mpc52xx_pci __iomem *pci_regs; + struct pci_controller *hose; + + pci_assign_all_busses = 1; + + pci_regs = ioremap(MPC52xx_PCI, sizeof(struct mpc52xx_pci)); + if (!pci_regs) + return; + + hose = pcibios_alloc_controller(); + if (!hose) { + iounmap(pci_regs); + return; + } + + ppc_md.pci_swizzle = common_swizzle; + ppc_md.pcibios_fixup_resources = mpc52xx_pci_fixup_resources; + + hose->first_busno = 0; + hose->last_busno = 0xff; + hose->bus_offset = 0; + hose->ops = &mpc52xx_pci_ops; + + mpc52xx_pci_setup(pci_regs); + + hose->pci_mem_offset = MPC52xx_PCI_MEM_OFFSET; + + isa_io_base = + (unsigned long) ioremap(MPC52xx_PCI_IO_BASE, + MPC52xx_PCI_IO_SIZE); + hose->io_base_virt = (void *) isa_io_base; + + hose->cfg_addr = &pci_regs->car; + hose->cfg_data = (void __iomem *) isa_io_base; + + /* Setup resources */ + pci_init_resource(&hose->mem_resources[0], + MPC52xx_PCI_MEM_START, + MPC52xx_PCI_MEM_STOP, + IORESOURCE_MEM|IORESOURCE_PREFETCH, + "PCI prefetchable memory"); + + pci_init_resource(&hose->mem_resources[1], + MPC52xx_PCI_MMIO_START, + MPC52xx_PCI_MMIO_STOP, + IORESOURCE_MEM, + "PCI memory"); + + pci_init_resource(&hose->io_resource, + MPC52xx_PCI_IO_START, + MPC52xx_PCI_IO_STOP, + IORESOURCE_IO, + "PCI I/O"); + +} diff -Nru a/arch/ppc/syslib/mpc52xx_pci.h b/arch/ppc/syslib/mpc52xx_pci.h --- /dev/null Wed Dec 31 16:00:00 196900 +++ b/arch/ppc/syslib/mpc52xx_pci.h 2005-03-11 20:41:56 +01:00 @@ -0,0 +1,139 @@ +/* + * arch/ppc/syslib/mpc52xx_pci.h + * + * PCI Include file the Freescale MPC52xx embedded cpu chips + * + * + * Maintainer : Sylvain Munaut + * + * Inspired from code written by Dale Farnsworth + * for the 2.4 kernel. + * + * Copyright (C) 2004 Sylvain Munaut + * Copyright (C) 2003 MontaVista, Software, Inc. + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +#ifndef __SYSLIB_MPC52xx_PCI_H__ +#define __SYSLIB_MPC52xx_PCI_H__ + +/* ======================================================================== */ +/* PCI windows config */ +/* ======================================================================== */ + +/* + * Master windows : MPC52xx -> PCI + * + * 0x80000000 -> 0x9FFFFFFF PCI Mem prefetchable IW0BTAR + * 0xA0000000 -> 0xAFFFFFFF PCI Mem IW1BTAR + * 0xB0000000 -> 0xB0FFFFFF PCI IO IW2BTAR + * + * Slave windows : PCI -> MPC52xx + * + * 0xF0000000 -> 0xF003FFFF MPC52xx MBAR TBATR0 + * 0x00000000 -> 0x3FFFFFFF MPC52xx local memory TBATR1 + */ + +#define MPC52xx_PCI_MEM_OFFSET 0x00000000 /* Offset for MEM MMIO */ + +#define MPC52xx_PCI_MEM_START 0x80000000 +#define MPC52xx_PCI_MEM_SIZE 0x20000000 +#define MPC52xx_PCI_MEM_STOP (MPC52xx_PCI_MEM_START+MPC52xx_PCI_MEM_SIZE-1) + +#define MPC52xx_PCI_MMIO_START 0xa0000000 +#define MPC52xx_PCI_MMIO_SIZE 0x10000000 +#define MPC52xx_PCI_MMIO_STOP (MPC52xx_PCI_MMIO_START+MPC52xx_PCI_MMIO_SIZE-1) + +#define MPC52xx_PCI_IO_BASE 0xb0000000 + +#define MPC52xx_PCI_IO_START 0x00000000 +#define MPC52xx_PCI_IO_SIZE 0x01000000 +#define MPC52xx_PCI_IO_STOP (MPC52xx_PCI_IO_START+MPC52xx_PCI_IO_SIZE-1) + + +#define MPC52xx_PCI_TARGET_IO MPC52xx_MBAR +#define MPC52xx_PCI_TARGET_MEM 0x00000000 + + +/* ======================================================================== */ +/* Structures mapping & Defines for PCI Unit */ +/* ======================================================================== */ + +#define MPC52xx_PCI_GSCR_BM 0x40000000 +#define MPC52xx_PCI_GSCR_PE 0x20000000 +#define MPC52xx_PCI_GSCR_SE 0x10000000 +#define MPC52xx_PCI_GSCR_XLB2PCI_MASK 0x07000000 +#define MPC52xx_PCI_GSCR_XLB2PCI_SHIFT 24 +#define MPC52xx_PCI_GSCR_IPG2PCI_MASK 0x00070000 +#define MPC52xx_PCI_GSCR_IPG2PCI_SHIFT 16 +#define MPC52xx_PCI_GSCR_BME 0x00004000 +#define MPC52xx_PCI_GSCR_PEE 0x00002000 +#define MPC52xx_PCI_GSCR_SEE 0x00001000 +#define MPC52xx_PCI_GSCR_PR 0x00000001 + + +#define MPC52xx_PCI_IWBTAR_TRANSLATION(proc_ad,pci_ad,size) \ + ( ( (proc_ad) & 0xff000000 ) | \ + ( (((size) - 1) >> 8) & 0x00ff0000 ) | \ + ( ((pci_ad) >> 16) & 0x0000ff00 ) ) + +#define MPC52xx_PCI_IWCR_PACK(win0,win1,win2) (((win0) << 24) | \ + ((win1) << 16) | \ + ((win2) << 8)) + +#define MPC52xx_PCI_IWCR_DISABLE 0x0 +#define MPC52xx_PCI_IWCR_ENABLE 0x1 +#define MPC52xx_PCI_IWCR_READ 0x0 +#define MPC52xx_PCI_IWCR_READ_LINE 0x2 +#define MPC52xx_PCI_IWCR_READ_MULTI 0x4 +#define MPC52xx_PCI_IWCR_MEM 0x0 +#define MPC52xx_PCI_IWCR_IO 0x8 + +#define MPC52xx_PCI_TCR_P 0x01000000 +#define MPC52xx_PCI_TCR_LD 0x00010000 + +#define MPC52xx_PCI_TBATR_DISABLE 0x0 +#define MPC52xx_PCI_TBATR_ENABLE 0x1 + + +#ifndef __ASSEMBLY__ + +struct mpc52xx_pci { + u32 idr; /* PCI + 0x00 */ + u32 scr; /* PCI + 0x04 */ + u32 ccrir; /* PCI + 0x08 */ + u32 cr1; /* PCI + 0x0C */ + u32 bar0; /* PCI + 0x10 */ + u32 bar1; /* PCI + 0x14 */ + u8 reserved1[16]; /* PCI + 0x18 */ + u32 ccpr; /* PCI + 0x28 */ + u32 sid; /* PCI + 0x2C */ + u32 erbar; /* PCI + 0x30 */ + u32 cpr; /* PCI + 0x34 */ + u8 reserved2[4]; /* PCI + 0x38 */ + u32 cr2; /* PCI + 0x3C */ + u8 reserved3[32]; /* PCI + 0x40 */ + u32 gscr; /* PCI + 0x60 */ + u32 tbatr0; /* PCI + 0x64 */ + u32 tbatr1; /* PCI + 0x68 */ + u32 tcr; /* PCI + 0x6C */ + u32 iw0btar; /* PCI + 0x70 */ + u32 iw1btar; /* PCI + 0x74 */ + u32 iw2btar; /* PCI + 0x78 */ + u8 reserved4[4]; /* PCI + 0x7C */ + u32 iwcr; /* PCI + 0x80 */ + u32 icr; /* PCI + 0x84 */ + u32 isr; /* PCI + 0x88 */ + u32 arb; /* PCI + 0x8C */ + u8 reserved5[104]; /* PCI + 0x90 */ + u32 car; /* PCI + 0xF8 */ + u8 reserved6[4]; /* PCI + 0xFC */ +}; + +#endif /* __ASSEMBLY__ */ + + +#endif /* __SYSLIB_MPC52xx_PCI_H__ */ diff -Nru a/include/asm-ppc/mpc52xx.h b/include/asm-ppc/mpc52xx.h --- a/include/asm-ppc/mpc52xx.h 2005-03-11 20:41:56 +01:00 +++ b/include/asm-ppc/mpc52xx.h 2005-03-11 20:41:56 +01:00 @@ -393,6 +393,8 @@ extern void mpc52xx_calibrate_decr(void); extern void mpc52xx_add_board_devices(struct ocp_def board_ocp[]); +extern void mpc52xx_find_bridges(void); + #endif /* __ASSEMBLY__ */ diff -Nru a/include/linux/pci_ids.h b/include/linux/pci_ids.h --- a/include/linux/pci_ids.h 2005-03-11 20:41:56 +01:00 +++ b/include/linux/pci_ids.h 2005-03-11 20:41:56 +01:00 @@ -807,6 +807,7 @@ #define PCI_DEVICE_ID_MOTOROLA_HAWK 0x4803 #define PCI_DEVICE_ID_MOTOROLA_CPX8216 0x4806 #define PCI_DEVICE_ID_MOTOROLA_HARRIER 0x480b +#define PCI_DEVICE_ID_MOTOROLA_MPC5200 0x5803 #define PCI_VENDOR_ID_PROMISE 0x105a #define PCI_DEVICE_ID_PROMISE_20265 0x0d30 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/