From: Gavin Guo Date: Mon, 28 Nov 2011 20:48:14 +0000 (+0000) Subject: pci_ftpci100: Implementation FTPCI100 PCI driver X-Git-Tag: v2011.12-rc1~85 X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-uboot.git;a=commitdiff_plain;h=014e46782b6f986766cdaea99b954ae877be4ea5 pci_ftpci100: Implementation FTPCI100 PCI driver FTPCI100 is a SoC PCI componenet of Faraday company. Which is usually built into SoC chips for providing embedded PCI functions. Signed-off-by: Gavin Guo Signed-off-by: Macpaul Lin --- diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile index ee0c64d135..1ae35d360b 100644 --- a/drivers/pci/Makefile +++ b/drivers/pci/Makefile @@ -27,6 +27,7 @@ LIB := $(obj)libpci.o COBJS-$(CONFIG_FSL_PCI_INIT) += fsl_pci_init.o COBJS-$(CONFIG_PCI) += pci.o pci_auto.o pci_indirect.o +COBJS-$(CONFIG_FTPCI100) += pci_ftpci100.o COBJS-$(CONFIG_IXP_PCI) += pci_ixp.o COBJS-$(CONFIG_SH4_PCI) += pci_sh4.o COBJS-$(CONFIG_SH7751_PCI) +=pci_sh7751.o diff --git a/drivers/pci/pci_ftpci100.c b/drivers/pci/pci_ftpci100.c new file mode 100644 index 0000000000..a795a97add --- /dev/null +++ b/drivers/pci/pci_ftpci100.c @@ -0,0 +1,330 @@ +/* + * Faraday FTPCI100 PCI Bridge Controller Device Driver Implementation + * + * Copyright (C) 2011 Andes Technology Corporation + * Gavin Guo, Andes Technology Corporation + * Macpaul Lin, Andes Technology Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include +#include +#include + +#include +#include /* u32, u16.... used by pci.h */ + +#include "pci_ftpci100.h" + +struct ftpci100_data { + unsigned int reg_base; + unsigned int io_base; + unsigned int mem_base; + unsigned int mmio_base; + unsigned int ndevs; +}; + +static struct pci_config devs[FTPCI100_MAX_FUNCTIONS]; +static struct pci_controller local_hose; + +static void setup_pci_bar(unsigned int bus, unsigned int dev, unsigned func, + unsigned char header, struct ftpci100_data *priv) +{ + struct pci_controller *hose = (struct pci_controller *)&local_hose; + unsigned int i, tmp32, bar_no, iovsmem = 1; + pci_dev_t dev_nu; + + /* A device is present, add an entry to the array */ + devs[priv->ndevs].bus = bus; + devs[priv->ndevs].dev = dev; + devs[priv->ndevs].func = func; + + dev_nu = PCI_BDF(bus, dev, func); + + if ((header & 0x7f) == 0x01) + /* PCI-PCI Bridge */ + bar_no = 2; + else + bar_no = 6; + + /* Allocate address spaces by configuring BARs */ + for (i = 0; i < bar_no; i++) { + pci_hose_write_config_dword(hose, dev_nu, + PCI_BASE_ADDRESS_0 + i * 4, 0xffffffff); + pci_hose_read_config_dword(hose, dev_nu, + PCI_BASE_ADDRESS_0 + i * 4, &tmp32); + + if (tmp32 == 0x0) + continue; + + /* IO space */ + if (tmp32 & 0x1) { + iovsmem = 0; + unsigned int size_mask = ~(tmp32 & 0xfffffffc); + + if (priv->io_base & size_mask) + priv->io_base = (priv->io_base & ~size_mask) + \ + size_mask + 1; + + devs[priv->ndevs].bar[i].addr = priv->io_base; + devs[priv->ndevs].bar[i].size = size_mask + 1; + + pci_hose_write_config_dword(hose, dev_nu, + PCI_BASE_ADDRESS_0 + i * 4, + priv->io_base); + + debug("Allocated IO address 0x%X-" \ + "0x%X for Bus %d, Device %d, Function %d\n", + priv->io_base, + priv->io_base + size_mask, bus, dev, func); + + priv->io_base += size_mask + 1; + } else { + /* Memory space */ + unsigned int is_64bit = ((tmp32 & 0x6) == 0x4); + unsigned int is_pref = tmp32 & 0x8; + unsigned int size_mask = ~(tmp32 & 0xfffffff0); + unsigned int alloc_base; + unsigned int *addr_mem_base; + + if (is_pref) + addr_mem_base = &priv->mem_base; + else + addr_mem_base = &priv->mmio_base; + + alloc_base = *addr_mem_base; + + if (alloc_base & size_mask) + alloc_base = (alloc_base & ~size_mask) \ + + size_mask + 1; + + pci_hose_write_config_dword(hose, dev_nu, + PCI_BASE_ADDRESS_0 + i * 4, alloc_base); + + debug("Allocated %s address 0x%X-" \ + "0x%X for Bus %d, Device %d, Function %d\n", + is_pref ? "MEM" : "MMIO", alloc_base, + alloc_base + size_mask, bus, dev, func); + + devs[priv->ndevs].bar[i].addr = alloc_base; + devs[priv->ndevs].bar[i].size = size_mask + 1; + + debug("BAR address BAR size\n"); + debug("%010x %08d\n", + devs[priv->ndevs].bar[0].addr, + devs[priv->ndevs].bar[0].size); + + alloc_base += size_mask + 1; + *addr_mem_base = alloc_base; + + if (is_64bit) { + i++; + pci_hose_write_config_dword(hose, dev_nu, + PCI_BASE_ADDRESS_0 + i * 4, 0x0); + } + } + } + + /* Enable Bus Master, Memory Space, and IO Space */ + pci_hose_read_config_dword(hose, dev_nu, PCI_CACHE_LINE_SIZE, &tmp32); + pci_hose_write_config_dword(hose, dev_nu, PCI_CACHE_LINE_SIZE, 0x08); + pci_hose_read_config_dword(hose, dev_nu, PCI_CACHE_LINE_SIZE, &tmp32); + + pci_hose_read_config_dword(hose, dev_nu, PCI_COMMAND, &tmp32); + + tmp32 &= 0xffff; + + if (iovsmem == 0) + tmp32 |= 0x5; + else + tmp32 |= 0x6; + + pci_hose_write_config_dword(hose, dev_nu, PCI_COMMAND, tmp32); +} + +static void pci_bus_scan(struct ftpci100_data *priv) +{ + struct pci_controller *hose = (struct pci_controller *)&local_hose; + unsigned int bus, dev, func; + pci_dev_t dev_nu; + unsigned int data32; + unsigned int tmp; + unsigned char header; + unsigned char int_pin; + unsigned int niobars; + unsigned int nmbars; + + priv->ndevs = 1; + + nmbars = 0; + niobars = 0; + + for (bus = 0; bus < MAX_BUS_NUM; bus++) + for (dev = 0; dev < MAX_DEV_NUM; dev++) + for (func = 0; func < MAX_FUN_NUM; func++) { + dev_nu = PCI_BDF(bus, dev, func); + pci_hose_read_config_dword(hose, dev_nu, + PCI_VENDOR_ID, &data32); + + /* + * some broken boards return 0 or ~0, + * if a slot is empty. + */ + if (data32 == 0xffffffff || + data32 == 0x00000000 || + data32 == 0x0000ffff || + data32 == 0xffff0000) + continue; + + pci_hose_read_config_dword(hose, dev_nu, + PCI_HEADER_TYPE, &tmp); + header = (unsigned char)tmp; + setup_pci_bar(bus, dev, func, header, priv); + + devs[priv->ndevs].v_id = (u16)(data32 & \ + 0x0000ffff); + + devs[priv->ndevs].d_id = (u16)((data32 & \ + 0xffff0000) >> 16); + + /* Figure out what INTX# line the card uses */ + pci_hose_read_config_byte(hose, dev_nu, + PCI_INTERRUPT_PIN, &int_pin); + + /* assign the appropriate irq line */ + if (int_pin > PCI_IRQ_LINES) { + printf("more irq lines than expect\n"); + } else if (int_pin != 0) { + /* This device uses an interrupt line */ + devs[priv->ndevs].pin = int_pin; + } + + pci_hose_read_config_dword(hose, dev_nu, + PCI_CLASS_DEVICE, &data32); + + debug("%06d %03d %03d " \ + "%04d %08x %08x " \ + "%03d %08x %06d %08x\n", + priv->ndevs, devs[priv->ndevs].bus, + devs[priv->ndevs].dev, + devs[priv->ndevs].func, + devs[priv->ndevs].d_id, + devs[priv->ndevs].v_id, + devs[priv->ndevs].pin, + devs[priv->ndevs].bar[0].addr, + devs[priv->ndevs].bar[0].size, + data32 >> 8); + + priv->ndevs++; + } +} + +static void ftpci_preinit(struct ftpci100_data *priv) +{ + struct ftpci100_ahbc *ftpci100; + struct pci_controller *hose = (struct pci_controller *)&local_hose; + u32 pci_config_addr; + u32 pci_config_data; + + priv->reg_base = CONFIG_FTPCI100_BASE; + priv->io_base = CONFIG_FTPCI100_BASE + CONFIG_FTPCI100_IO_SIZE; + priv->mmio_base = CONFIG_FTPCI100_MEM_BASE; + priv->mem_base = CONFIG_FTPCI100_MEM_BASE + CONFIG_FTPCI100_MEM_SIZE; + + ftpci100 = (struct ftpci100_ahbc *)priv->reg_base; + + pci_config_addr = (u32) &ftpci100->conf; + pci_config_data = (u32) &ftpci100->data; + + /* print device name */ + printf("FTPCI100\n"); + + /* dump basic configuration */ + debug("%s: Config addr is %08X, data port is %08X\n", + __func__, pci_config_addr, pci_config_data); + + /* PCI memory space */ + pci_set_region(hose->regions + 0, + CONFIG_PCI_MEM_BUS, + CONFIG_PCI_MEM_PHYS, + CONFIG_PCI_MEM_SIZE, + PCI_REGION_MEM); + hose->region_count++; + + /* PCI IO space */ + pci_set_region(hose->regions + 1, + CONFIG_PCI_IO_BUS, + CONFIG_PCI_IO_PHYS, + CONFIG_PCI_IO_SIZE, + PCI_REGION_IO); + hose->region_count++; + +#if defined(CONFIG_PCI_SYS_BUS) + /* PCI System Memory space */ + pci_set_region(hose->regions + 2, + CONFIG_PCI_SYS_BUS, + CONFIG_PCI_SYS_PHYS, + CONFIG_PCI_SYS_SIZE, + PCI_REGION_MEM | PCI_REGION_SYS_MEMORY); + hose->region_count++; +#endif + + /* setup indirect read/write function */ + pci_setup_indirect(hose, pci_config_addr, pci_config_data); + + /* register hose */ + pci_register_hose(hose); +} + +void pci_ftpci_init(void) +{ + struct ftpci100_data *priv = NULL; + struct pci_controller *hose = (struct pci_controller *)&local_hose; + pci_dev_t bridge_num; + + struct pci_device_id bridge_ids[] = { + {FTPCI100_BRIDGE_VENDORID, FTPCI100_BRIDGE_DEVICEID}, + {0, 0} + }; + + priv = malloc(sizeof(struct ftpci100_data)); + + if (!priv) { + printf("%s(): failed to malloc priv\n", __func__); + return; + } + + memset(priv, 0, sizeof(struct ftpci100_data)); + + ftpci_preinit(priv); + + debug("Device bus dev func deviceID vendorID pin address" \ + " size class\n"); + + pci_bus_scan(priv); + + /* + * Setup the PCI Bridge Window to 1GB, + * it will cause USB OHCI Host controller Unrecoverable Error + * if it is not set. + */ + bridge_num = pci_find_devices(bridge_ids, 0); + if (bridge_num == -1) { + printf("PCI Bridge not found\n"); + return; + } + pci_hose_write_config_dword(hose, bridge_num, PCI_MEM_BASE_SIZE1, + FTPCI100_BASE_ADR_SIZE(1024)); +} diff --git a/drivers/pci/pci_ftpci100.h b/drivers/pci/pci_ftpci100.h new file mode 100644 index 0000000000..19c81a8e78 --- /dev/null +++ b/drivers/pci/pci_ftpci100.h @@ -0,0 +1,94 @@ +/* + * Faraday FTPCI100 PCI Bridge Controller Device Driver Implementation + * + * Copyright (C) 2010 Andes Technology Corporation + * Gavin Guo, Andes Technology Corporation + * Macpaul Lin, Andes Technology Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __FTPCI100_H +#define __FTPCI100_H + +/* AHB Control Registers */ +struct ftpci100_ahbc { + unsigned int iosize; /* 0x00 - I/O Space Size Signal */ + unsigned int prot; /* 0x04 - AHB Protection */ + unsigned int rsved[8]; /* 0x08-0x24 - Reserved */ + unsigned int conf; /* 0x28 - PCI Configuration */ + unsigned int data; /* 0x2c - PCI Configuration DATA */ +}; + +/* + * FTPCI100_IOSIZE_REG's constant definitions + */ +#define FTPCI100_BASE_IO_SIZE(x) (ffs(x) - 1) /* 1M - 2048M */ + +/* + * PCI Configuration Register + */ +#define PCI_INT_MASK 0x4c +#define PCI_MEM_BASE_SIZE1 0x50 +#define PCI_MEM_BASE_SIZE2 0x54 +#define PCI_MEM_BASE_SIZE3 0x58 + +/* + * PCI_INT_MASK's bit definitions + */ +#define PCI_INTA_ENABLE (1 << 22) +#define PCI_INTB_ENABLE (1 << 23) +#define PCI_INTC_ENABLE (1 << 24) +#define PCI_INTD_ENABLE (1 << 25) + +/* + * PCI_MEM_BASE_SIZE1's constant definitions + */ +#define FTPCI100_BASE_ADR_SIZE(x) ((ffs(x) - 1) << 16) /* 1M - 2048M */ + +#define FTPCI100_MAX_FUNCTIONS 20 +#define PCI_IRQ_LINES 4 + +#define MAX_BUS_NUM 256 +#define MAX_DEV_NUM 32 +#define MAX_FUN_NUM 8 + +#define PCI_MAX_BAR_PER_FUNC 6 + +/* + * PCI_MEM_SIZE + */ +#define FTPCI100_MEM_SIZE(x) (ffs(x) << 24) + +/* This definition is used by pci_ftpci_init() */ +#define FTPCI100_BRIDGE_VENDORID 0x159b +#define FTPCI100_BRIDGE_DEVICEID 0x4321 + +struct pcibar { + unsigned int size; + unsigned int addr; +}; + +struct pci_config { + unsigned int bus; + unsigned int dev; /* device */ + unsigned int func; + unsigned int pin; + unsigned short v_id; /* vendor id */ + unsigned short d_id; /* device id */ + struct pcibar bar[PCI_MAX_BAR_PER_FUNC + 1]; +}; + +#endif