/*
* Common routines for the Marvell/Galileo Discovery line of host bridges
* (gt64260, mv64360, mv64460, ...).
*
* Author: Mark A. Greer <mgreer@mvista.com>
*
* 2004 (c) 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.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/spinlock.h>
#include <linux/mv643xx.h>
#include <linux/platform_device.h>
#include <asm/byteorder.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
#include <asm/machdep.h>
#include <asm/pci-bridge.h>
#include <asm/delay.h>
#include <asm/mv64x60.h>
u8 mv64x60_pci_exclude_bridge = 1;
DEFINE_SPINLOCK(mv64x60_lock);
static phys_addr_t mv64x60_bridge_pbase;
static void __iomem *mv64x60_bridge_vbase;
static u32 mv64x60_bridge_type = MV64x60_TYPE_INVALID;
static u32 mv64x60_bridge_rev;
#if defined(CONFIG_SYSFS) && !defined(CONFIG_GT64260)
static struct pci_controller sysfs_hose_a;
#endif
static u32 gt64260_translate_size(u32 base, u32 size, u32 num_bits);
static u32 gt64260_untranslate_size(u32 base, u32 size, u32 num_bits);
static void gt64260_set_pci2mem_window(struct pci_controller *hose, u32 bus,
u32 window, u32 base);
static void gt64260_set_pci2regs_window(struct mv64x60_handle *bh,
struct pci_controller *hose, u32 bus, u32 base);
static u32 gt64260_is_enabled_32bit(struct mv64x60_handle *bh, u32 window);
static void gt64260_enable_window_32bit(struct mv64x60_handle *bh, u32 window);
static void gt64260_disable_window_32bit(struct mv64x60_handle *bh, u32 window);
static void gt64260_enable_window_64bit(struct mv64x60_handle *bh, u32 window);
static void gt64260_disable_window_64bit(struct mv64x60_handle *bh, u32 window);
static void gt64260_disable_all_windows(struct mv64x60_handle *bh,
struct mv64x60_setup_info *si);
static void gt64260a_chip_specific_init(struct mv64x60_handle *bh,
struct mv64x60_setup_info *si);
static void gt64260b_chip_specific_init(struct mv64x60_handle *bh,
struct mv64x60_setup_info *si);
static u32 mv64360_translate_size(u32 base, u32 size, u32 num_bits);
static u32 mv64360_untranslate_size(u32 base, u32 size, u32 num_bits);
static void mv64360_set_pci2mem_window(struct pci_controller *hose, u32 bus,
u32 window, u32 base);
static void mv64360_set_pci2regs_window(struct mv64x60_handle *bh,
struct pci_controller *hose, u32 bus, u32 base);
static u32 mv64360_is_enabled_32bit(struct mv64x60_handle *bh, u32 window);
static void mv64360_enable_window_32bit(struct mv64x60_handle *bh, u32 window);
static void mv64360_disable_window_32bit(struct mv64x60_handle *bh, u32 window);
static void mv64360_enable_window_64bit(struct mv64x60_handle *bh, u32 window);
static void mv64360_disable_window_64bit(struct mv64x60_handle *bh, u32 window);
static void mv64360_disable_all_windows(struct mv64x60_handle *bh,
struct mv64x60_setup_info *si);
static void mv64360_config_io2mem_windows(struct mv64x60_handle *bh,
struct mv64x60_setup_info *si,
u32 mem_windows[MV64x60_CPU2MEM_WINDOWS][2]);
static void mv64360_set_mpsc2regs_window(struct mv64x60_handle *bh, u32 base);
static void mv64360_chip_specific_init(struct mv64x60_handle *bh,
struct mv64x60_setup_info *si);
static void mv64460_chip_specific_init(struct mv64x60_handle *bh,
struct mv64x60_setup_info *si);
/*
* Define tables that have the chip-specific info for each type of
* Marvell bridge chip.
*/
static struct mv64x60_chip_info gt64260a_ci __initdata = { /* GT64260A */
.translate_size = gt64260_translate_size,
.untranslate_size = gt64260_untranslate_size,
.set_pci2mem_window = gt64260_set_pci2mem_window,
.set_pci2regs_window = gt64260_set_pci2regs_window,
.is_enabled_32bit = gt64260_is_enabled_32bit,
.enable_window_32bit = gt64260_enable_window_32bit,
.disable_window_32bit = gt64260_disable_window_32bit,
.enable_window_64bit = gt64260_enable_window_64bit,
.disable_window_64bit = gt64260_disable_window_64bit,
.disable_all_windows = gt64260_disable_all_windows,
.chip_specific_init = gt64260a_chip_specific_init,
.window_tab_32bit = gt64260_32bit_windows,
.window_tab_64bit = gt64260_64bit_windows,
};
static struct mv64x60_chip_info gt64260b_ci __initdata = { /* GT64260B */
.translate_size = gt64260_translate_size,
.untranslate_size = gt64260_untranslate_size,
.set_pci2mem_window = gt64260_set_pci2mem_window,
.set_pci2regs_window = gt64260_set_pci2regs_window,
.is_enabled_32bit = gt64260_is_enabled_32bit,
.enable_window_32bit = gt64260_enable_window_32bit,
.disable_window_32bit = gt64260_disable_window_32bit,
.enable_window_64bit = gt64260_enable_window_64bit,
.disable_window_64bit = gt64260_disable_window_64bit,
.disable_all_windows = gt64260_disable_all_windows,
.chip_specific_init = gt64260b_chip_specific_init,
.window_tab_32bit = gt64260_32bit_windows,
.window_tab_64bit = gt64260_64bit_windows,
};
static struct mv64x60_chip_info mv64360_ci __initdata = { /* MV64360 */
.translate_size = mv64360_translate_size,
.untranslate_size = mv64360_untranslate_size,
.set_pci2mem_window = mv64360_set_pci2mem_window,
.set_pci2regs_window = mv64360_set_pci2regs_window,
.is_enabled_32bit = mv64360_is_enabled_32bit,
.enable_window_32bit = mv64360_enable_window_32bit,
.disable_window_32bit = mv64360_disable_window_32bit,
.enable_window_64bit = mv64360_enable_window_64bit,
.disable_window_64bit = mv64360_disable_window_64bit,
.disable_all_windows = mv64360_disable_all_windows,
.config_io2mem_windows = mv64360_config_io2mem_windows,
.set_mpsc2regs_window = mv64360_set_mpsc2regs_window,
.chip_specific_init = mv64360_chip_specific_init,
.window_tab_32bit = mv64360_32bit_windows,
.window_tab_64bit = mv64360_64bit_windows,
};
static struct mv64x60_chip_info mv64460_ci __initdata = { /* MV64460 */
.translate_size = mv64360_translate_size,
.untranslate_size = mv64360_untranslate_size,
.set_pci2mem_window = mv64360_set_pci2mem_window,
.set_pci2regs_window = mv64360_set_pci2regs_window,
.is_enabled_32bit = mv64360_is_enabled_32bit,
.enable_window_32bit = mv64360_enable_window_32bit,
.disable_window_32bit = mv64360_disable_window_32bit,
.enable_window_64bit = mv64360_enable_window_64bit,
.disable_window_64bit = mv64360_disable_window_64bit,
.disable_all_windows = mv64360_disable_all_windows,
.config_io2mem_windows = mv64360_config_io2mem_windows,
.set_mpsc2regs_window = mv64360_set_mpsc2regs_window,
.chip_specific_init = mv64460_chip_specific_init,
.window_tab_32bit = mv64360_32bit_windows,
.window_tab_64bit = mv64360_64bit_windows,
};
/*
*****************************************************************************
*
* Platform Device Definitions
*
*****************************************************************************
*/
#ifdef CONFIG_SERIAL_MPSC
static struct mpsc_shared_pdata mv64x60_mpsc_shared_pdata = {
.mrr_val = 0x3ffffe38,
.rcrr_val = 0,
.tcrr_val = 0,
.intr_cause_val = 0,
.intr_mask_val = 0,
};
static struct resource mv64x60_mpsc_shared_resources[] = {
/* Do not change the order of the IORESOURCE_MEM resources */
[0] = {
.name = "mpsc routing base",
.start = MV64x60_MPSC_ROUTING_OFFSET,
.end = MV64x60_MPSC_ROUTING_OFFSET +
MPSC_ROUTING_REG_BLOCK_SIZE - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.name = "sdma intr base",
.start = MV64x60_SDMA_INTR_OFFSET,
.end = MV64x60_SDMA_INTR_OFFSET +
MPSC_SDMA_INTR_REG_BLOCK_SIZE - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device mpsc_shared_device = { /* Shared device */
.name = MPSC_SHARED_NAME,
.id = 0,
.num_resources = ARRAY_SIZE(mv64x60_mpsc_shared_resources),
.resource = mv64x60_mpsc_shared_resources,
.dev = {
.platform_data = &mv64x60_mpsc_shared_pdata,
},
};
static struct mpsc_pdata mv64x60_mpsc0_pdata = {
.mirror_regs = 0,
.cache_mgmt = 0,
.max_idle = 0,
.default_baud = 9600,
.default_bits = 8,
.default_parity = 'n',
.default_flow = 'n',
.chr_1_val = 0x00000000,
.chr_2_val = 0x00000000,
.chr_10_val = 0x00000003,
.mpcr_val = 0,
.bcr_val = 0,
.brg_can_tune = 0,
.brg_clk_src = 8, /* Default to TCLK */
.brg_clk_freq = 100000000, /* Default to 100 MHz */
};
static struct resource mv64x60_mpsc0_resources[] = {
/* Do not change the order of the IORESOURCE_MEM resources */
[0] = {
.name = "mpsc 0 base",
.start = MV64x60_MPSC_0_OFFSET,
.end = MV64x60_MPSC_0_OFFSET + MPSC_REG_BLOCK_SIZE - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.name = "sdma 0 base",
.start = MV64x60_SDMA_0_OFFSET,
.end = MV64x60_SDMA_0_OFFSET + MPSC_SDMA_REG_BLOCK_SIZE - 1,
.flags = IORESOURCE_MEM,
},
[2] = {
.name = "brg 0 base",
.start = MV64x60_BRG_0_OFFSET,
.end = MV64x60_BRG_0_OFFSET + MPSC_BRG_REG_BLOCK_SIZE - 1,
.flags = IORESOURCE_MEM,
},
[3] = {
.name = "sdma 0 irq",
.start = MV64x60_IRQ_SDMA_0,
.end = MV64x60_IRQ_SDMA_0,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mpsc0_device = {
.name = MPSC_CTLR_NAME,
.id = 0,
.num_resources = ARRAY_SIZE(mv64x60_mpsc0_resources),
.resource = mv64x60_mpsc0_resources,
.dev = {
.platform_data = &mv64x60_mpsc0_pdata,
},
};
static struct mpsc_pdata mv64x60_mpsc1_pdata = {
.mirror_regs = 0,
.cache_mgmt = 0,
.max_idle = 0,
.default_baud = 9600,
.default_bits = 8,
.default_parity = 'n',
.default_flow = 'n',
.chr_1_val = 0x00000000,
.chr_1_val = 0x00000000,
.chr_2_val = 0x00000000,
.chr_10_val = 0x00000003,
.mpcr_val = 0,
.bcr_val = 0,
.brg_can_tune = 0,
.brg_clk_src = 8, /* Default to TCLK */
.brg_clk_freq = 100000000, /* Default to 100 MHz */
};
static struct resource mv64x60_mpsc1_resources[] = {
/* Do not change the order of the IORESOURCE_MEM resources */
[0] = {
.name = "mpsc 1 base",
.start = MV64x60_MPSC_1_OFFSET,
.end = MV64x60_MPSC_1_OFFSET + MPSC_REG_BLOCK_SIZE - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.name = "sdma 1 base",
.start = MV64x60_SDMA_1_OFFSET,
.end = MV64x60_SDMA_1_OFFSET + MPSC_SDMA_REG_BLOCK_SIZE - 1,
.flags = IORESOURCE_MEM,
},
[2] = {
.name = "brg 1 base",
.start = MV64x60_BRG_1_OFFSET,
.end = MV64x60_BRG_1_OFFSET + MPSC_BRG_REG_BLOCK_SIZE - 1,
.flags = IORESOURCE_MEM,
},
[3] = {
.name = "sdma 1 irq",
.start = MV64360_IRQ_SDMA_1,
.end = MV64360_IRQ_SDMA_1,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mpsc1_device = {
.name = MPSC_CTLR_NAME,
.id = 1,
.num_resources = ARRAY_SIZE(mv64x60_mpsc1_resources),
.resource = mv64x60_mpsc1_resources,
.dev = {
.platform_data = &mv64x60_mpsc1_pdata,
},
};
#endif
#if defined(CONFIG_MV643XX_ETH) || defined(CONFIG_MV643XX_ETH_MODULE)
static struct resource mv64x60_eth_shared_resources[] = {
[0] = {
.name = "ethernet shared base",
.start = MV643XX_ETH_SHARED_REGS,
.end = MV643XX_ETH_SHARED_REGS +
MV643XX_ETH_SHARED_REGS_SIZE - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device mv64x60_eth_shared_device = {
.name = MV643XX_ETH_SHARED_NAME,
.id = 0,
.num_resources = ARRAY_SIZE(mv64x60_eth_shared_resources),
.resource = mv64x60_eth_shared_resources,
};
#ifdef CONFIG_MV643XX_ETH_0
static struct resource mv64x60_eth0_resources[] = {
[0] = {
.name = "eth0 irq",
.start = MV64x60_IRQ_ETH_0,
.end = MV64x60_IRQ_ETH_0,
.flags = IORESOURCE_IRQ,
},
};
static struct mv643xx_eth_platform_data eth0_pd;
static struct platform_device eth0_device = {
.name = MV643XX_ETH_NAME,
.id = 0,
.num_resources = ARRAY_SIZE(mv64x60_eth0_resources),
.resource = mv64x60_eth0_resources,
.dev = {
.platform_data = ð0_pd,
},
};
#endif
#ifdef CONFIG_MV643XX_ETH_1
static struct resource mv64x60_eth1_resources[] = {
[0] = {
.name = "eth1 irq",
.start = MV64x60_IRQ_ETH_1,
.end = MV64x60_IRQ_ETH_1,
.flags = IORESOURCE_IRQ,
},
};
static struct mv643xx_eth_platform_data eth1_pd;
static struct platform_device eth1_device = {
.name = MV643XX_ETH_NAME,
.id = 1,
.num_resources = ARRAY_SIZE(mv64x60_eth1_resources),
.resource = mv64x60_eth1_resources,
.dev = {
.platform_data = ð1_pd,
},
};
#endif
#ifdef CONFIG_MV643XX_ETH_2
static struct resource mv64x60_eth2_resources[] = {
[0] = {
.name = "eth2 irq",
.start = MV64x60_IRQ_ETH_2,
.end = MV64x60_IRQ_ETH_2,
.flags = IORESOURCE_IRQ,
},
};
static struct mv643xx_eth_platform_data eth2_pd;
static struct platform_device eth2_device = {
.name = MV643XX_ETH_NAME,
.id = 2,
.num_resources = ARRAY_SIZE(mv64x60_eth2_resources),
.resource = mv64x60_eth2_resources,
.dev = {
.platform_data = ð2_pd,
},
};
#endif
#endif
#ifdef CONFIG_I2C_MV64XXX
static struct mv64xxx_i2c_pdata mv64xxx_i2c_pdata = {
.freq_m = 8,
.freq_n = 3,
.timeout = 1000, /* Default timeout of 1 second */
.retries = 1,
};
static struct resource mv64xxx_i2c_resources[] = {
/* Do not change the order of the IORESOURCE_MEM resources */
[0] = {
.name = "mv64xxx i2c base",
.start = MV64XXX_I2C_OFFSET,
.end = MV64XXX_I2C_OFFSET + MV64XXX_I2C_REG_BLOCK_SIZE - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.name = "mv64xxx i2c irq",
.start = MV64x60_IRQ_I2C,
.end = MV64x60_IRQ_I2C,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device i2c_device = {
.name = MV64XXX_I2C_CTLR_NAME,
.id = 0,
.num_resources = ARRAY_SIZE(mv64xxx_i2c_resources),
.resource = mv64xxx_i2c_resources,
.dev = {
.platform_data = &mv64xxx_i2c_pdata,
},
};
#endif
#if defined(CONFIG_SYSFS) && !defined(CONFIG_GT64260)
static struct mv64xxx_pdata mv64xxx_pdata = {
.hs_reg_valid = 0,
};
static struct platform_device mv64xxx_device = { /* general mv64x60 stuff */
.name = MV64XXX_DEV_NAME,
.id = 0,
.dev = {
.platform_data = &mv64xxx_pdata,
},
};
#endif
static struct platform_device *mv64x60_pd_devs[] __initdata = {
#ifdef CONFIG_SERIAL_MPSC
&mpsc_shared_device,
&mpsc0_device,
&mpsc1_device,
#endif
#if defined(CONFIG_MV643XX_ETH) || defined(CONFIG_MV643XX_ETH_MODULE)
&mv64x60_eth_shared_device,
#endif
#ifdef CONFIG_MV643XX_ETH_0
ð0_device,
#endif
#ifdef CONFIG_MV643XX_ETH_1
ð1_device,
#endif
#ifdef CONFIG_MV643XX_ETH_2
ð2_device,
#endif
#ifdef CONFIG_I2C_MV64XXX
&i2c_device,
#endif
#if defined(CONFIG_SYSFS) && !defined(CONFIG_GT64260)
&mv64xxx_device,
#endif
};
/*
*****************************************************************************
*
* Bridge Initialization Routines
*
*****************************************************************************
*/
/*
* mv64x60_init()
*
* Initialze the bridge based on setting passed in via 'si'. The bridge
* handle, 'bh', will be set so that it can be used to make subsequent
* calls to routines in this file.
*/
int __init
mv64x60_init(struct mv64x60_handle *bh, struct mv64x60_setup_info *si)
{
u32 mem_windows[MV64x60_CPU2MEM_WINDOWS][2];
if (ppc_md.progress)
ppc_md.progress("mv64x60 initialization", 0x0);
spin_lock_init(&mv64x60_lock);
mv64x60_early_init(bh, si);
if (mv64x60_get_type(bh) || mv64x60_setup_for_chip(bh)) {
iounmap(bh->v_base);
bh->v_base = 0;
if (ppc_md.progress)
ppc_md.progress("mv64x60_init: Can't determine chip",0);
return -1;
}
bh->ci->disable_all_windows(bh, si);
mv64x60_get_mem_windows(bh, mem_windows);
mv64x60_config_cpu2mem_windows(bh, si, mem_windows);
if (bh->ci->config_io2mem_windows)
bh->ci->config_io2mem_windows(bh, si, mem_windows);
if (bh->ci->set_mpsc2regs_window)
bh->ci->set_mpsc2regs_window(bh, si->phys_reg_base);
if (si->pci_1.enable_bus) {
bh->io_base_b = (u32)ioremap(si->pci_1.pci_io.cpu_base,
si->pci_1.pci_io.size);
isa_io_base = bh->io_base_b;
}
if (si->pci_0.enable_bus) {
bh->io_base_a = (u32)ioremap(si->pci_0.pci_io.cpu_base,
si->pci_0.pci_io.size);
isa_io_base = bh->io_base_a;
mv64x60_alloc_hose(bh, MV64x60_PCI0_CONFIG_ADDR,
MV64x60_PCI0_CONFIG_DATA, &bh->hose_a);
mv64x60_config_resources(bh->hose_a, &si->pci_0, bh->io_base_a);
mv64x60_config_pci_params(bh->hose_a, &si->pci_0);
mv64x60_config_cpu2pci_windows(bh, &si->pci_0, 0);
mv64x60_config_pci2mem_windows(bh, bh->hose_a, &si->pci_0, 0,
mem_windows);
bh->ci->set_pci2regs_window(bh, bh->hose_a, 0,
si->phys_reg_base);
}
if (si->pci_1.enable_bus) {
mv64x60_alloc_hose(bh, MV64x60_PCI1_CONFIG_ADDR,
MV64x60_PCI1_CONFIG_DATA, &bh->hose_b);
mv64x60_config_resources(bh->hose_b, &si->pci_1, bh->io_base_b);
mv64x60_config_pci_params(bh->hose_b, &si->pci_1);
mv64x60_config_cpu2pci_windows(bh, &si->pci_1, 1);
mv64x60_config_pci2mem_windows(bh, bh->hose_b, &si->pci_1, 1,
mem_windows);
bh->ci->set_pci2regs_window(bh, bh->hose_b, 1,
si->phys_reg_base);
}
bh->ci->chip_specific_init(bh, si);
mv64x60_pd_fixup(bh, mv64x60_pd_devs, ARRAY_SIZE(mv64x60_pd_devs));
return 0;
}
/*
* mv64x60_early_init()
*
* Do some bridge work that must take place before we start messing with
* the bridge for real.
*/
void __init
mv64x60_early_init(struct mv64x60_handle *bh, struct mv64x60_setup_info *si)
{
struct pci_controller hose_a, hose_b;
memset(bh, 0, sizeof(*bh));
bh->p_base = si->phys_reg_base;
bh->v_base = ioremap(bh->p_base, MV64x60_INTERNAL_SPACE_SIZE);
mv64x60_bridge_pbase = bh->p_base;
mv64x60_bridge_vbase = bh->v_base;
/* Assuming pci mode [reserved] bits 4:5 on 64260 are 0 */
bh->pci_mode_a = mv64x60_read(bh, MV64x60_PCI0_MODE) &
MV64x60_PCIMODE_MASK;
bh->pci_mode_b = mv64x60_read(bh, MV64x60_PCI1_MODE) &
MV64x60_PCIMODE_MASK;
/* Need temporary hose structs to call mv64x60_set_bus() */
memset(&hose_a, 0, sizeof(hose_a));
memset(&hose_b, 0, sizeof(hose_b));
setup_indirect_pci_nomap(&hose_a, bh->v_base + MV64x60_PCI0_CONFIG_ADDR,
bh->v_base + MV64x60_PCI0_CONFIG_DATA);
setup_indirect_pci_nomap(&hose_b, bh->v_base + MV64x60_PCI1_CONFIG_ADDR,
bh->v_base + MV64x60_PCI1_CONFIG_DATA);
bh->hose_a = &hose_a;
bh->hose_b = &hose_b;
#if defined(CONFIG_SYSFS) && !defined(CONFIG_GT64260)
/* Save a copy of hose_a for sysfs functions -- hack */
memcpy(&sysfs_hose_a, &hose_a, sizeof(hose_a));
#endif
mv64x60_set_bus(bh, 0, 0);
mv64x60_set_bus(bh, 1, 0);
bh->hose_a = NULL;
bh->hose_b = NULL;
/* Clear bit 0 of PCI addr decode control so PCI->CPU remap 1:1 */
mv64x60_clr_bits(bh, MV64x60_PCI0_PCI_DECODE_CNTL, 0x00000001);
mv64x60_clr_bits(bh, MV64x60_PCI1_PCI_DECODE_CNTL, 0x00000001);
/* Bit 12 MUST be 0; set bit 27--don't auto-update cpu remap regs */
mv64x60_clr_bits(bh, MV64x60_CPU_CONFIG, (1<<12));
mv64x60_set_bits(bh, MV64x60_CPU_CONFIG, (1<<27));
mv64x60_set_bits(bh, MV64x60_PCI0_TO_RETRY, 0xffff);
mv64x60_set_bits(bh, MV64x60_PCI1_TO_RETRY, 0xffff);
}
/*
*****************************************************************************
*
* Window Config Routines
*
*****************************************************************************
*/
/*
* mv64x60_get_32bit_window()
*
* Determine the base address and size of a 32-bit window on the bridge.
*/
void __init
mv64x60_get_32bit_window(struct mv64x60_handle *bh, u32 window,
u32 *base, u32 *size)
{
u32 val, base_reg, size_reg, base_bits, size_bits;
u32 (*get_from_field)(u32 val, u32 num_bits);
base_reg = bh->ci->window_tab_32bit[window].base_reg;
if (base_reg != 0) {
size_reg = bh->ci->window_tab_32bit[window].size_reg;
base_bits = bh->ci->window_tab_32bit[window].base_bits;
size_bits = bh->ci->window_tab_32bit[window].size_bits;
get_from_field= bh->ci->window_tab_32bit[window].get_from_field;
val = mv64x60_read(bh, base_reg);
*base = get_from_field(val, base_bits);
if (size_reg != 0) {
val = mv64x60_read(bh, size_reg);
val = get_from_field(val, size_bits);
*size = bh->ci->untranslate_size(*base, val, size_bits);
} else
*size = 0;
} else {
*base = 0;
*size = 0;
}
pr_debug("get 32bit window: %d, base: 0x%x, size: 0x%x\n",
window, *base, *size);
}
/*
* mv64x60_set_32bit_window()
*
* Set the base address and size of a 32-bit window on the bridge.
*/
void __init
mv64x60_set_32bit_window(struct mv64x60_handle *bh, u32 window,
u32 base, u32 size, u32 other_bits)
{
u32 val, base_reg, size_reg, base_bits, size_bits;
u32 (*map_to_field)(u32 val, u32 num_bits);
pr_debug("set 32bit window: %d, base: 0x%x, size: 0x%x, other: 0x%x\n",
window, base, size, other_bits);
base_reg = bh->ci->window_tab_32bit[window].base_reg;
if (base_reg != 0) {
size_reg = bh->ci->window_tab_32bit[window].size_reg;
base_bits = bh->ci->window_tab_32bit[window].base_bits;
size_bits = bh->ci->window_tab_32bit[window].size_bits;
map_to_field = bh->ci->window_tab_32bit[window].map_to_field;
val = map_to_field(base, base_bits) | other_bits;
mv64x60_write(bh, base_reg, val);
if (size_reg != 0) {
val = bh->ci->translate_size(base, size, size_bits);
val = map_to_field(val, size_bits);
mv64x60_write(bh, size_reg, val);
}
(void)mv64x60_read(bh, base_reg); /* Flush FIFO */
}
}
/*
* mv64x60_get_64bit_window()
*
* Determine the base address and size of a 64-bit window on the bridge.
*/
void __init
mv64x60_get_64bit_window(struct mv64x60_handle *bh, u32 window,
u32 *base_hi, u32 *base_lo, u32 *size)
{
u32 val, base_lo_reg, size_reg, base_lo_bits, size_bits;
u32 (*get_from_field)(u32 val, u32 num_bits);
base_lo_reg = bh->ci->window_tab_64bit[window].base_lo_reg;
if (base_lo_reg != 0) {
size_reg = bh->ci->window_tab_64bit[window].size_reg;
base_lo_bits = bh->ci->window_tab_64bit[window].base_lo_bits;
size_bits = bh->ci->window_tab_64bit[window].size_bits;
get_from_field= bh->ci->window_tab_64bit[window].get_from_field;
*base_hi = mv64x60_read(bh,
bh->ci->window_tab_64bit[window].base_hi_reg);
val = mv64x60_read(bh, base_lo_reg);
*base_lo = get_from_field(val, base_lo_bits);
if (size_reg != 0) {
val = mv64x60_read(bh, size_reg);
val = get_from_field(val, size_bits);
*size = bh->ci->untranslate_size(*base_lo, val,
size_bits);
} else
*size = 0;
} else {
*base_hi = 0;
*base_lo = 0;
*size = 0;
}
pr_debug("get 64bit window: %d, base hi: 0x%x, base lo: 0x%x, "
"size: 0x%x\n", window, *base_hi, *base_lo, *size);
}
/*
* mv64x60_set_64bit_window()
*
* Set the base address and size of a 64-bit window on the bridge.
*/
void __init
mv64x60_set_64bit_window(struct mv64x60_handle *bh, u32 window,
u32 base_hi, u32 base_lo, u32 size, u32 other_bits)
{
u32 val, base_lo_reg, size_reg, base_lo_bits, size_bits;
u32 (*map_to_field)(u32 val, u32 num_bits);
pr_debug("set 64bit window: %d, base hi: 0x%x, base lo: 0x%x, "
"size: 0x%x, other: 0x%x\n",
window, base_hi, base_lo, size, other_bits);
base_lo_reg = bh->ci->window_tab_64bit[window].base_lo_reg;
if (base_lo_reg != 0) {
size_reg = bh->ci->window_tab_64bit[window].size_reg;
base_lo_bits = bh->ci->window_tab_64bit[window].base_lo_bits;
size_bits = bh->ci->window_tab_64bit[window].size_bits;
map_to_field = bh->ci->window_tab_64bit[window].map_to_field;
mv64x60_write(bh, bh->ci->window_tab_64bit[window].base_hi_reg,
base_hi);
val = map_to_field(base_lo, base_lo_bits) | other_bits;
mv64x60_write(bh, base_lo_reg, val);
if (size_reg != 0) {
val = bh->ci->translate_size(base_lo, size, size_bits);
val = map_to_field(val, size_bits);
mv64x60_write(bh, size_reg, val);
}
(void)mv64x60_read(bh, base_lo_reg); /* Flush FIFO */
}
}
/*
* mv64x60_mask()
*
* Take the high-order 'num_bits' of 'val' & mask off low bits.
*/
u32 __init
mv64x60_mask(u32 val, u32 num_bits)
{
return val & (0xffffffff << (32 - num_bits));
}
/*
* mv64x60_shift_left()
*
* Take the low-order 'num_bits' of 'val', shift left to align at bit 31 (MSB).
*/
u32 __init
mv64x60_shift_left(u32 val, u32 num_bits)
{
return val << (32 - num_bits);
}
/*
* mv64x60_shift_right()
*
* Take the high-order 'num_bits' of 'val', shift right to align at bit 0 (LSB).
*/
u32 __init
mv64x60_shift_right(u32 val, u32 num_bits)
{
return val >> (32 - num_bits);
}
/*
*****************************************************************************
*
* Chip Identification Routines
*
*****************************************************************************
*/
/*
* mv64x60_get_type()
*
* Determine the type of bridge chip we have.
*/
int __init
mv64x60_get_type(struct mv64x60_handle *bh)
{
struct pci_controller hose;
u16 val;
u8 save_exclude;
memset(&hose, 0, sizeof(hose));
setup_indirect_pci_nomap(&hose, bh->v_base + MV64x60_PCI0_CONFIG_ADDR,
bh->v_base + MV64x60_PCI0_CONFIG_DATA);
save_exclude = mv64x60_pci_exclude_bridge;
mv64x60_pci_exclude_bridge = 0;
/* Sanity check of bridge's Vendor ID */
early_read_config_word(&hose, 0, PCI_DEVFN(0, 0), PCI_VENDOR_ID, &val);
if (val != PCI_VENDOR_ID_MARVELL) {
mv64x60_pci_exclude_bridge = save_exclude;
return -1;
}
/* Get the revision of the chip */
early_read_config_word(&hose, 0, PCI_DEVFN(0, 0), PCI_CLASS_REVISION,
&val);
bh->rev = (u32)(val & 0xff);
/* Figure out the type of Marvell bridge it is */
early_read_config_word(&hose, 0, PCI_DEVFN(0, 0), PCI_DEVICE_ID, &val);
mv64x60_pci_exclude_bridge = save_exclude;
switch (val) {
case PCI_DEVICE_ID_MARVELL_GT64260:
switch (bh->rev) {
case GT64260_REV_A:
bh->type = MV64x60_TYPE_GT64260A;
break;
default:
printk(KERN_WARNING "Unsupported GT64260 rev %04x\n",
bh->rev);
/* Assume its similar to a 'B' rev and fallthru */
case GT64260_REV_B:
bh->type = MV64x60_TYPE_GT64260B;
break;
}
break;
case PCI_DEVICE_ID_MARVELL_MV64360:
/* Marvell won't tell me how to distinguish a 64361 & 64362 */
bh->type = MV64x60_TYPE_MV64360;
break;
case PCI_DEVICE_ID_MARVELL_MV64460:
bh->type = MV64x60_TYPE_MV64460;
break;
default:
printk(KERN_ERR "Unknown Marvell bridge type %04x\n", val);
return -1;
}
/* Hang onto bridge type & rev for PIC code */
mv64x60_bridge_type = bh->type;
mv64x60_bridge_rev = bh->rev;
return 0;
}
/*
* mv64x60_setup_for_chip()
*
* Set 'bh' to use the proper set of routine for the bridge chip that we have.
*/
int __init
mv64x60_setup_for_chip(struct mv64x60_handle *bh)
{
int rc = 0;
/* Set up chip-specific info based on the chip/bridge type */
switch(bh->type) {
case MV64x60_TYPE_GT64260A:
bh->ci = >64260a_ci;
break;
case MV64x60_TYPE_GT64260B:
bh->ci = >64260b_ci;
break;
case MV64x60_TYPE_MV64360:
bh->ci = &mv64360_ci;
break;
case MV64x60_TYPE_MV64460:
bh->ci = &mv64460_ci;
break;
case MV64x60_TYPE_INVALID:
default:
if (ppc_md.progress)
ppc_md.progress("mv64x60: Unsupported bridge", 0x0);
printk(KERN_ERR "mv64x60: Unsupported bridge\n");
rc = -1;
}
return rc;
}
/*
* mv64x60_get_bridge_vbase()
*
* Return the virtual address of the bridge's registers.
*/
void __iomem *
mv64x60_get_bridge_vbase(void)
{
return mv64x60_bridge_vbase;
}
/*
* mv64x60_get_bridge_type()
*
* Return the type of bridge on the platform.
*/
u32
mv64x60_get_bridge_type(void)
{
return mv64x60_bridge_type;
}
/*
* mv64x60_get_bridge_rev()
*
* Return the revision of the bridge on the platform.
*/
u32
mv64x60_get_bridge_rev(void)
{
return mv64x60_bridge_rev;
}
/*
*****************************************************************************
*
* System Memory Window Related Routines
*
*****************************************************************************
*/
/*
* mv64x60_get_mem_size()
*
* Calculate the amount of memory that the memory controller is set up for.
* This should only be used by board-specific code if there is no other
* way to determine the amount of memory in the system.
*/
u32 __init
mv64x60_get_mem_size(u32 bridge_base, u32 chip_type)
{
struct mv64x60_handle bh;
u32 mem_windows[MV64x60_CPU2MEM_WINDOWS][2];
u32 rc = 0;
memset(&bh, 0, sizeof(bh));
bh.type = chip_type;
bh.v_base = (void *)bridge_base;
if (!mv64x60_setup_for_chip(&bh)) {
mv64x60_get_mem_windows(&bh, mem_windows);
rc = mv64x60_calc_mem_size(&bh, mem_windows);
}
return rc;
}
/*
* mv64x60_get_mem_windows()
*
* Get the values in the memory controller & return in the 'mem_windows' array.
*/
void __init
mv64x60_get_mem_windows(struct mv64x60_handle *bh,
u32 mem_windows[MV64x60_CPU2MEM_WINDOWS][2])
{
u32 i, win;
for (win=MV64x60_CPU2MEM_0_WIN,i=0;win<=MV64x60_CPU2MEM_3_WIN;win++,i++)
if (bh->ci->is_enabled_32bit(bh, win))
mv64x60_get_32bit_window(bh, win,
&mem_windows[i][0], &mem_windows[i][1]);
else {
mem_windows[i][0] = 0;
mem_windows[i][1] = 0;
}
}
/*
* mv64x60_calc_mem_size()
*
* Using the memory controller register values in 'mem_windows', determine
* how much memory it is set up for.
*/
u32 __init
mv64x60_calc_mem_size(struct mv64x60_handle *bh,
u32 mem_windows[MV64x60_CPU2MEM_WINDOWS][2])
{
u32 i, total = 0;
for (i=0; i<MV64x60_CPU2MEM_WINDOWS; i++)
total += mem_windows[i][1];
return total;
}
/*
*****************************************************************************
*
* CPU->System MEM, PCI Config Routines
*
*****************************************************************************
*/
/*
* mv64x60_config_cpu2mem_windows()
*
* Configure CPU->Memory windows on the bridge.
*/
static u32 prot_tab[] __initdata = {
MV64x60_CPU_PROT_0_WIN, MV64x60_CPU_PROT_1_WIN,
MV64x60_CPU_PROT_2_WIN, MV64x60_CPU_PROT_3_WIN
};
static u32 cpu_snoop_tab[] __initdata = {
MV64x60_CPU_SNOOP_0_WIN, MV64x60_CPU_SNOOP_1_WIN,
MV64x60_CPU_SNOOP_2_WIN, MV64x60_CPU_SNOOP_3_WIN
};
void __init
mv64x60_config_cpu2mem_windows(struct mv64x60_handle *bh,
struct mv64x60_setup_info *si,
u32 mem_windows[MV64x60_CPU2MEM_WINDOWS][2])
{
u32 i, win;
/* Set CPU protection & snoop windows */
for (win=MV64x60_CPU2MEM_0_WIN,i=0;win<=MV64x60_CPU2MEM_3_WIN;win++,i++)
if (bh->ci->is_enabled_32bit(bh, win)) {
mv64x60_set_32bit_window(bh, prot_tab[i],
mem_windows[i][0], mem_windows[i][1],
si->cpu_prot_options[i]);
bh->ci->enable_window_32bit(bh, prot_tab[i]);
if (bh->ci->window_tab_32bit[cpu_snoop_tab[i]].
base_reg != 0) {
mv64x60_set_32bit_window(bh, cpu_snoop_tab[i],
mem_windows[i][0], mem_windows[i][1],
si->cpu_snoop_options[i]);
bh->ci->enable_window_32bit(bh,
cpu_snoop_tab[i]);
}
}
}
/*
* mv64x60_config_cpu2pci_windows()
*
* Configure the CPU->PCI windows for one of the PCI buses.
*/
static u32 win_tab[2][4] __initdata = {
{ MV64x60_CPU2PCI0_IO_WIN, MV64x60_CPU2PCI0_MEM_0_WIN,
MV64x60_CPU2PCI0_MEM_1_WIN, MV64x60_CPU2PCI0_MEM_2_WIN },
{ MV64x60_CPU2PCI1_IO_WIN, MV64x60_CPU2PCI1_MEM_0_WIN,
MV64x60_CPU2PCI1_MEM_1_WIN, MV64x60_CPU2PCI1_MEM_2_WIN },
};
static u32 remap_tab[2][4] __initdata = {
{ MV64x60_CPU2PCI0_IO_REMAP_WIN, MV64x60_CPU2PCI0_MEM_0_REMAP_WIN,
MV64x60_CPU2PCI0_MEM_1_REMAP_WIN, MV64x60_CPU2PCI0_MEM_2_REMAP_WIN },
{ MV64x60_CPU2PCI1_IO_REMAP_WIN, MV64x60_CPU2PCI1_MEM_0_REMAP_WIN,
MV64x60_CPU2PCI1_MEM_1_REMAP_WIN, MV64x60_CPU2PCI1_MEM_2_REMAP_WIN }
};
void __init
mv64x60_config_cpu2pci_windows(struct mv64x60_handle *bh,
struct mv64x60_pci_info *pi, u32 bus)
{
int i;
if (pi->pci_io.size > 0) {
mv64x60_set_32bit_window(bh, win_tab[bus][0],
pi->pci_io.cpu_base, pi->pci_io.size, pi->pci_io.swap);
mv64x60_set_32bit_window(bh, remap_tab[bus][0],
pi->pci_io.pci_base_lo, 0, 0);
bh->ci->enable_window_32bit(bh, win_tab[bus][0]);
} else /* Actually, the window should already be disabled */
bh->ci->disable_window_32bit(bh, win_tab[bus][0]);
for (i=0; i<3; i++)
if (pi->pci_mem[i].size > 0) {
mv64x60_set_32bit_window(bh, win_tab[bus][i+1],
pi->pci_mem[i].cpu_base, pi->pci_mem[i].size,
pi->pci_mem[i].swap);
mv64x60_set_64bit_window(bh, remap_tab[bus][i+1],
pi->pci_mem[i].pci_base_hi,
pi->pci_mem[i].pci_base_lo, 0, 0);
bh->ci->enable_window_32bit(bh, win_tab[bus][i+1]);
} else /* Actually, the window should already be disabled */
bh->ci->disable_window_32bit(bh, win_tab[bus][i+1]);
}
/*
*****************************************************************************
*
* PCI->System MEM Config Routines
*
*****************************************************************************
*/
/*
* mv64x60_config_pci2mem_windows()
*
* Configure the PCI->Memory windows on the bridge.
*/
static u32 pci_acc_tab[2][4] __initdata = {
{ MV64x60_PCI02MEM_ACC_CNTL_0_WIN, MV64x60_PCI02MEM_ACC_CNTL_1_WIN,
MV64x60_PCI02MEM_ACC_CNTL_2_WIN, MV64x60_PCI02MEM_ACC_CNTL_3_WIN },
{ MV64x60_PCI12MEM_ACC_CNTL_0_WIN, MV64x60_PCI12MEM_ACC_CNTL_1_WIN,
MV64x60_PCI12MEM_ACC_CNTL_2_WIN, MV64x60_PCI12MEM_ACC_CNTL_3_WIN }
};
static u32 pci_snoop_tab[2][4] __initdata = {
{ MV64x60_PCI02MEM_SNOOP_0_WIN, MV64x60_PCI02MEM_SNOOP_1_WIN,
MV64x60_PCI02MEM_SNOOP_2_WIN, MV64x60_PCI02MEM_SNOOP_3_WIN },
{ MV64x60_PCI12MEM_SNOOP_0_WIN, MV64x60_PCI12MEM_SNOOP_1_WIN,
MV64x60_PCI12MEM_SNOOP_2_WIN, MV64x60_PCI12MEM_SNOOP_3_WIN }
};
static u32 pci_size_tab[2][4] __initdata = {
{ MV64x60_PCI0_MEM_0_SIZE, MV64x60_PCI0_MEM_1_SIZE,
MV64x60_PCI0_MEM_2_SIZE, MV64x60_PCI0_MEM_3_SIZE },
{ MV64x60_PCI1_MEM_0_SIZE, MV64x60_PCI1_MEM_1_SIZE,
MV64x60_PCI1_MEM_2_SIZE, MV64x60_PCI1_MEM_3_SIZE }
};
void __init
mv64x60_config_pci2mem_windows(struct mv64x60_handle *bh,
struct pci_controller *hose, struct mv64x60_pci_info *pi,
u32 bus, u32 mem_windows[MV64x60_CPU2MEM_WINDOWS][2])
{
u32 i, win;
/*
* Set the access control, snoop, BAR size, and window base addresses.
* PCI->MEM windows base addresses will match exactly what the
* CPU->MEM windows are.
*/
for (win=MV64x60_CPU2MEM_0_WIN,i=0;win<=MV64x60_CPU2MEM_3_WIN;win++,i++)
if (bh->ci->is_enabled_32bit(bh, win)) {
mv64x60_set_64bit_window(bh,
pci_acc_tab[bus][i], 0,
mem_windows[i][0], mem_windows[i][1],
pi->acc_cntl_options[i]);
bh->ci->enable_window_64bit(bh, pci_acc_tab[bus][i]);
if (bh->ci->window_tab_64bit[
pci_snoop_tab[bus][i]].base_lo_reg != 0) {
mv64x60_set_64bit_window(bh,
pci_snoop_tab[bus][i], 0,
mem_windows[i][0], mem_windows[i][1],
pi->snoop_options[i]);
bh->ci->enable_window_64bit(bh,
pci_snoop_tab[bus][i]);
}
bh->ci->set_pci2mem_window(hose, bus, i,
mem_windows[i][0]);
mv64x60_write(bh, pci_size_tab[bus][i],
mv64x60_mask(mem_windows[i][1] - 1, 20));
/* Enable the window */
mv64x60_clr_bits(bh, ((bus == 0) ?
MV64x60_PCI0_BAR_ENABLE :
MV64x60_PCI1_BAR_ENABLE), (1 << i));
}
}
/*
*****************************************************************************
*
* Hose & Resource Alloc/Init Routines
*
*****************************************************************************
*/
/*
* mv64x60_alloc_hoses()
*
* Allocate the PCI hose structures for the bridge's PCI buses.
*/
void __init
mv64x60_alloc_hose(struct mv64x60_handle *bh, u32 cfg_addr, u32 cfg_data,
struct pci_controller **hose)
{
*hose = pcibios_alloc_controller();
setup_indirect_pci_nomap(*hose, bh->v_base + cfg_addr,
bh->v_base + cfg_data);
}
/*
* mv64x60_config_resources()
*
* Calculate the offsets, etc. for the hose structures to reflect all of
* the address remapping that happens as you go from CPU->PCI and PCI->MEM.
*/
void __init
mv64x60_config_resources(struct pci_controller *hose,
struct mv64x60_pci_info *pi, u32 io_base)
{
int i;
/* 2 hoses; 4 resources/hose; string <= 64 bytes */
static char s[2][4][64];
if (pi->pci_io.size != 0) {
sprintf(s[hose->index][0], "PCI hose %d I/O Space",
hose->index);
pci_init_resource(&hose->io_resource, io_base - isa_io_base,
io_base - isa_io_base + pi->pci_io.size - 1,
IORESOURCE_IO, s[hose->index][0]);
hose->io_space.start = pi->pci_io.pci_base_lo;
hose->io_space.end = pi->pci_io.pci_base_lo + pi->pci_io.size-1;
hose->io_base_phys = pi->pci_io.cpu_base;
hose->io_base_virt = (void *)isa_io_base;
}
for (i=0; i<3; i++)
if (pi->pci_mem[i].size != 0) {
sprintf(s[hose->index][i+1], "PCI hose %d MEM Space %d",
hose->index, i);
pci_init_resource(&hose->mem_resources[i],
pi->pci_mem[i].cpu_base,
pi->pci_mem[i].cpu_base + pi->pci_mem[i].size-1,
IORESOURCE_MEM, s[hose->index][i+1]);
}
hose->mem_space.end = pi->pci_mem[0].pci_base_lo +
pi->pci_mem[0].size - 1;
hose->pci_mem_offset = pi->pci_mem[0].cpu_base -
pi->pci_mem[0].pci_base_lo;
}
/*
* mv64x60_config_pci_params()
*
* Configure a hose's PCI config space parameters.
*/
void __init
mv64x60_config_pci_params(struct pci_controller *hose,
struct mv64x60_pci_info *pi)
{
u32 devfn;
u16 u16_val;
u8 save_exclude;
devfn = PCI_DEVFN(0,0);
save_exclude = mv64x60_pci_exclude_bridge;
mv64x60_pci_exclude_bridge = 0;
/* Set class code to indicate host bridge */
u16_val = PCI_CLASS_BRIDGE_HOST; /* 0x0600 (host bridge) */
early_write_config_word(hose, 0, devfn, PCI_CLASS_DEVICE, u16_val);
/* Enable bridge to be PCI master & respond to PCI MEM cycles */
early_read_config_word(hose, 0, devfn, PCI_COMMAND, &u16_val);
u16_val &= ~(PCI_COMMAND_IO | PCI_COMMAND_INVALIDATE |
PCI_COMMAND_PARITY | PCI_COMMAND_SERR | PCI_COMMAND_FAST_BACK);
u16_val |= pi->pci_cmd_bits | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
early_write_config_word(hose, 0, devfn, PCI_COMMAND, u16_val);
/* Set latency timer, cache line size, clear BIST */
u16_val = (pi->latency_timer << 8) | (L1_CACHE_BYTES >> 2);
early_write_config_word(hose, 0, devfn, PCI_CACHE_LINE_SIZE, u16_val);
mv64x60_pci_exclude_bridge = save_exclude;
}
/*
*****************************************************************************
*
* PCI Related Routine
*
*****************************************************************************
*/
/*
* mv64x60_set_bus()
*
* Set the bus number for the hose directly under the bridge.
*/
void __init
mv64x60_set_bus(struct mv64x60_handle *bh, u32 bus, u32 child_bus)
{
struct pci_controller *hose;
u32 pci_mode, p2p_cfg, pci_cfg_offset, val;
u8 save_exclude;
if (bus == 0) {
pci_mode = bh->pci_mode_a;
p2p_cfg = MV64x60_PCI0_P2P_CONFIG;
pci_cfg_offset = 0x64;
hose = bh->hose_a;
} else {
pci_mode = bh->pci_mode_b;
p2p_cfg = MV64x60_PCI1_P2P_CONFIG;
pci_cfg_offset = 0xe4;
hose = bh->hose_b;
}
child_bus &= 0xff;
val = mv64x60_read(bh, p2p_cfg);
if (pci_mode == MV64x60_PCIMODE_CONVENTIONAL) {
val &= 0xe0000000; /* Force dev num to 0, turn off P2P bridge */
val |= (child_bus << 16) | 0xff;
mv64x60_write(bh, p2p_cfg, val);
(void)mv64x60_read(bh, p2p_cfg); /* Flush FIFO */
} else { /* PCI-X */
/*
* Need to use the current bus/dev number (that's in the
* P2P CONFIG reg) to access the bridge's pci config space.
*/
save_exclude = mv64x60_pci_exclude_bridge;
mv64x60_pci_exclude_bridge = 0;
early_write_config_dword(hose, (val & 0x00ff0000) >> 16,
PCI_DEVFN(((val & 0x1f000000) >> 24), 0),
pci_cfg_offset, child_bus << 8);
mv64x60_pci_exclude_bridge = save_exclude;
}
}
/*
* mv64x60_pci_exclude_device()
*
* This routine is used to make the bridge not appear when the
* PCI subsystem is accessing PCI devices (in PCI config space).
*/
int
mv64x60_pci_exclude_device(u8 bus, u8 devfn)
{
struct pci_controller *hose;
hose = pci_bus_to_hose(bus);
/* Skip slot 0 on both hoses */
if ((mv64x60_pci_exclude_bridge == 1) && (PCI_SLOT(devfn) == 0) &&
(hose->first_busno == bus))
return PCIBIOS_DEVICE_NOT_FOUND;
else
return PCIBIOS_SUCCESSFUL;
} /* mv64x60_pci_exclude_device() */
/*
*****************************************************************************
*
* Platform Device Routines
*
*****************************************************************************
*/
/*
* mv64x60_pd_fixup()
*
* Need to add the base addr of where the bridge's regs are mapped in the
* physical addr space so drivers can ioremap() them.
*/
void __init
mv64x60_pd_fixup(struct mv64x60_handle *bh, struct platform_device *pd_devs[],
u32 entries)
{
struct resource *r;
u32 i, j;
for (i=0; i<entries; i++) {
j = 0;
while ((r = platform_get_resource(pd_devs[i],IORESOURCE_MEM,j))
!= NULL) {
r->start += bh->p_base;
r->end += bh->p_base;
j++;
}
}
}
/*
* mv64x60_add_pds()
*
* Add the mv64x60 platform devices to the list of platform devices.
*/
static int __init
mv64x60_add_pds(void)
{
return platform_add_devices(mv64x60_pd_devs,
ARRAY_SIZE(mv64x60_pd_devs));
}
arch_initcall(mv64x60_add_pds);
/*
*****************************************************************************
*
* GT64260-Specific Routines
*
*****************************************************************************
*/
/*
* gt64260_translate_size()
*
* On the GT64260, the size register is really the "top" address of the window.
*/
static u32 __init
gt64260_translate_size(u32 base, u32 size, u32 num_bits)
{
return base + mv64x60_mask(size - 1, num_bits);
}
/*
* gt64260_untranslate_size()
*
* Translate the top address of a window into a window size.
*/
static u32 __init
gt64260_untranslate_size(u32 base, u32 size, u32 num_bits)
{
if (size >= base)
size = size - base + (1 << (32 - num_bits));
else
size = 0;
return size;
}
/*
* gt64260_set_pci2mem_window()
*
* The PCI->MEM window registers are actually in PCI config space so need
* to set them by setting the correct config space BARs.
*/
static u32 gt64260_reg_addrs[2][4] __initdata = {
{ 0x10, 0x14, 0x18, 0x1c }, { 0x90, 0x94, 0x98, 0x9c }
};
static void __init
gt64260_set_pci2mem_window(struct pci_controller *hose, u32 bus, u32 window,
u32 base)
{
u8 save_exclude;
pr_debug("set pci->mem window: %d, hose: %d, base: 0x%x\n", window,
hose->index, base);
save_exclude = mv64x60_pci_exclude_bridge;
mv64x60_pci_exclude_bridge = 0;
early_write_config_dword(hose, 0, PCI_DEVFN(0, 0),
gt64260_reg_addrs[bus][window], mv64x60_mask(base, 20) | 0x8);
mv64x60_pci_exclude_bridge = save_exclude;
}
/*
* gt64260_set_pci2regs_window()
*
* Set where the bridge's registers appear in PCI MEM space.
*/
static u32 gt64260_offset[2] __initdata = {0x20, 0xa0};
static void __init
gt64260_set_pci2regs_window(struct mv64x60_handle *bh,
struct pci_controller *hose, u32 bus, u32 base)
{
u8 save_exclude;
pr_debug("set pci->internal regs hose: %d, base: 0x%x\n", hose->index,
base);
save_exclude = mv64x60_pci_exclude_bridge;
mv64x60_pci_exclude_bridge = 0;
early_write_config_dword(hose, 0, PCI_DEVFN(0,0), gt64260_offset[bus],
(base << 16));
mv64x60_pci_exclude_bridge = save_exclude;
}
/*
* gt64260_is_enabled_32bit()
*
* On a GT64260, a window is enabled iff its top address is >= to its base
* address.
*/
static u32 __init
gt64260_is_enabled_32bit(struct mv64x60_handle *bh, u32 window)
{
u32 rc = 0;
if ((gt64260_32bit_windows[window].base_reg != 0) &&
(gt64260_32bit_windows[window].size_reg != 0) &&
((mv64x60_read(bh, gt64260_32bit_windows[window].size_reg) &
((1 << gt64260_32bit_windows[window].size_bits) - 1)) >=
(mv64x60_read(bh, gt64260_32bit_windows[window].base_reg) &
((1 << gt64260_32bit_windows[window].base_bits) - 1))))
rc = 1;
return rc;
}
/*
* gt64260_enable_window_32bit()
*
* On the GT64260, a window is enabled iff the top address is >= to the base
* address of the window. Since the window has already been configured by
* the time this routine is called, we have nothing to do here.
*/
static void __init
gt64260_enable_window_32bit(struct mv64x60_handle *bh, u32 window)
{
pr_debug("enable 32bit window: %d\n", window);
}
/*
* gt64260_disable_window_32bit()
*
* On a GT64260, you disable a window by setting its top address to be less
* than its base address.
*/
static void __init
gt64260_disable_window_32bit(struct mv64x60_handle *bh, u32 window)
{
pr_debug("disable 32bit window: %d, base_reg: 0x%x, size_reg: 0x%x\n",
window, gt64260_32bit_windows[window].base_reg,
gt64260_32bit_windows[window].size_reg);
if ((gt64260_32bit_windows[window].base_reg != 0) &&
(gt64260_32bit_windows[window].size_reg != 0)) {
/* To disable, make bottom reg higher than top reg */
mv64x60_write(bh, gt64260_32bit_windows[window].base_reg,0xfff);
mv64x60_write(bh, gt64260_32bit_windows[window].size_reg, 0);
}
}
/*
* gt64260_enable_window_64bit()
*
* On the GT64260, a window is enabled iff the top address is >= to the base
* address of the window. Since the window has already been configured by
* the time this routine is called, we have nothing to do here.
*/
static void __init
gt64260_enable_window_64bit(struct mv64x60_handle *bh, u32 window)
{
pr_debug("enable 64bit window: %d\n", window);
}
/*
* gt64260_disable_window_64bit()
*
* On a GT64260, you disable a window by setting its top address to be less
* than its base address.
*/
static void __init
gt64260_disable_window_64bit(struct mv64x60_handle *bh, u32 window)
{
pr_debug("disable 64bit window: %d, base_reg: 0x%x, size_reg: 0x%x\n",
window, gt64260_64bit_windows[window].base_lo_reg,
gt64260_64bit_windows[window].size_reg);
if ((gt64260_64bit_windows[window].base_lo_reg != 0) &&
(gt64260_64bit_windows[window].size_reg != 0)) {
/* To disable, make bottom reg higher than top reg */
mv64x60_write(bh, gt64260_64bit_windows[window].base_lo_reg,
0xfff);
mv64x60_write(bh, gt64260_64bit_windows[window].base_hi_reg, 0);
mv64x60_write(bh, gt64260_64bit_windows[window].size_reg, 0);
}
}
/*
* gt64260_disable_all_windows()
*
* The GT64260 has several windows that aren't represented in the table of
* windows at the top of this file. This routine turns all of them off
* except for the memory controller windows, of course.
*/
static void __init
gt64260_disable_all_windows(struct mv64x60_handle *bh,
struct mv64x60_setup_info *si)
{
u32 i, preserve;
/* Disable 32bit windows (don't disable cpu->mem windows) */
for (i=MV64x60_CPU2DEV_0_WIN; i<MV64x60_32BIT_WIN_COUNT; i++) {
if (i < 32)
preserve = si->window_preserve_mask_32_lo & (1 << i);
else
preserve = si->window_preserve_mask_32_hi & (1<<(i-32));
if (!preserve)
gt64260_disable_window_32bit(bh, i);
}
/* Disable 64bit windows */
for (i=0; i<MV64x60_64BIT_WIN_COUNT; i++)
if (!(si->window_preserve_mask_64 & (1<<i)))
gt64260_disable_window_64bit(bh, i);
/* Turn off cpu protection windows not in gt64260_32bit_windows[] */
mv64x60_write(bh, GT64260_CPU_PROT_BASE_4, 0xfff);
mv64x60_write(bh, GT64260_CPU_PROT_SIZE_4, 0);
mv64x60_write(bh, GT64260_CPU_PROT_BASE_5, 0xfff);
mv64x60_write(bh, GT64260_CPU_PROT_SIZE_5, 0);
mv64x60_write(bh, GT64260_CPU_PROT_BASE_6, 0xfff);
mv64x60_write(bh, GT64260_CPU_PROT_SIZE_6, 0);
mv64x60_write(bh, GT64260_CPU_PROT_BASE_7, 0xfff);
mv64x60_write(bh, GT64260_CPU_PROT_SIZE_7, 0);
/* Turn off PCI->MEM access cntl wins not in gt64260_64bit_windows[] */
mv64x60_write(bh, MV64x60_PCI0_ACC_CNTL_4_BASE_LO, 0xfff);
mv64x60_write(bh, MV64x60_PCI0_ACC_CNTL_4_BASE_HI, 0);
mv64x60_write(bh, MV64x60_PCI0_ACC_CNTL_4_SIZE, 0);
mv64x60_write(bh, MV64x60_PCI0_ACC_CNTL_5_BASE_LO, 0xfff);
mv64x60_write(bh, MV64x60_PCI0_ACC_CNTL_5_BASE_HI, 0);
mv64x60_write(bh, MV64x60_PCI0_ACC_CNTL_5_SIZE, 0);
mv64x60_write(bh, GT64260_PCI0_ACC_CNTL_6_BASE_LO, 0xfff);
mv64x60_write(bh, GT64260_PCI0_ACC_CNTL_6_BASE_HI, 0);
mv64x60_write(bh, GT64260_PCI0_ACC_CNTL_6_SIZE, 0);
mv64x60_write(bh, GT64260_PCI0_ACC_CNTL_7_BASE_LO, 0xfff);
mv64x60_write(bh, GT64260_PCI0_ACC_CNTL_7_BASE_HI, 0);
mv64x60_write(bh, GT64260_PCI0_ACC_CNTL_7_SIZE, 0);
mv64x60_write(bh, MV64x60_PCI1_ACC_CNTL_4_BASE_LO, 0xfff);
mv64x60_write(bh, MV64x60_PCI1_ACC_CNTL_4_BASE_HI, 0);
mv64x60_write(bh, MV64x60_PCI1_ACC_CNTL_4_SIZE, 0);
mv64x60_write(bh, MV64x60_PCI1_ACC_CNTL_5_BASE_LO, 0xfff);
mv64x60_write(bh, MV64x60_PCI1_ACC_CNTL_5_BASE_HI, 0);
mv64x60_write(bh, MV64x60_PCI1_ACC_CNTL_5_SIZE, 0);
mv64x60_write(bh, GT64260_PCI1_ACC_CNTL_6_BASE_LO, 0xfff);
mv64x60_write(bh, GT64260_PCI1_ACC_CNTL_6_BASE_HI, 0);
mv64x60_write(bh, GT64260_PCI1_ACC_CNTL_6_SIZE, 0);
mv64x60_write(bh, GT64260_PCI1_ACC_CNTL_7_BASE_LO, 0xfff);
mv64x60_write(bh, GT64260_PCI1_ACC_CNTL_7_BASE_HI, 0);
mv64x60_write(bh, GT64260_PCI1_ACC_CNTL_7_SIZE, 0);
/* Disable all PCI-><whatever> windows */
mv64x60_set_bits(bh, MV64x60_PCI0_BAR_ENABLE, 0x07fffdff);
mv64x60_set_bits(bh, MV64x60_PCI1_BAR_ENABLE, 0x07fffdff);
/*
* Some firmwares enable a bunch of intr sources
* for the PCI INT output pins.
*/
mv64x60_write(bh, GT64260_IC_CPU_INTR_MASK_LO, 0);
mv64x60_write(bh, GT64260_IC_CPU_INTR_MASK_HI, 0);
mv64x60_write(bh, GT64260_IC_PCI0_INTR_MASK_LO, 0);
mv64x60_write(bh, GT64260_IC_PCI0_INTR_MASK_HI, 0);
mv64x60_write(bh, GT64260_IC_PCI1_INTR_MASK_LO, 0);
mv64x60_write(bh, GT64260_IC_PCI1_INTR_MASK_HI, 0);
mv64x60_write(bh, GT64260_IC_CPU_INT_0_MASK, 0);
mv64x60_write(bh, GT64260_IC_CPU_INT_1_MASK, 0);
mv64x60_write(bh, GT64260_IC_CPU_INT_2_MASK, 0);
mv64x60_write(bh, GT64260_IC_CPU_INT_3_MASK, 0);
}
/*
* gt64260a_chip_specific_init()
*
* Implement errata work arounds for the GT64260A.
*/
static void __init
gt64260a_chip_specific_init(struct mv64x60_handle *bh,
struct mv64x60_setup_info *si)
{
#ifdef CONFIG_SERIAL_MPSC
struct resource *r;
#endif
#if !defined(CONFIG_NOT_COHERENT_CACHE)
u32 val;
u8 save_exclude;
#endif
if (si->pci_0.enable_bus)
mv64x60_set_bits(bh, MV64x60_PCI0_CMD,
((1<<4) | (1<<5) | (1<<9) | (1<<13)));
if (si->pci_1.enable_bus)
mv64x60_set_bits(bh, MV64x60_PCI1_CMD,
((1<<4) | (1<<5) | (1<<9) | (1<<13)));
/*
* Dave Wilhardt found that bit 4 in the PCI Command registers must
* be set if you are using cache coherency.
*/
#if !defined(CONFIG_NOT_COHERENT_CACHE)
/* Res #MEM-4 -- cpu read buffer to buffer 1 */
if ((mv64x60_read(bh, MV64x60_CPU_MODE) & 0xf0) == 0x40)
mv64x60_set_bits(bh, GT64260_SDRAM_CONFIG, (1<<26));
save_exclude = mv64x60_pci_exclude_bridge;
mv64x60_pci_exclude_bridge = 0;
if (si->pci_0.enable_bus) {
early_read_config_dword(bh->hose_a, 0, PCI_DEVFN(0,0),
PCI_COMMAND, &val);
val |= PCI_COMMAND_INVALIDATE;
early_write_config_dword(bh->hose_a, 0, PCI_DEVFN(0,0),
PCI_COMMAND, val);
}
if (si->pci_1.enable_bus) {
early_read_config_dword(bh->hose_b, 0, PCI_DEVFN(0,0),
PCI_COMMAND, &val);
val |= PCI_COMMAND_INVALIDATE;
early_write_config_dword(bh->hose_b, 0, PCI_DEVFN(0,0),
PCI_COMMAND, val);
}
mv64x60_pci_exclude_bridge = save_exclude;
#endif
/* Disable buffer/descriptor snooping */
mv64x60_clr_bits(bh, 0xf280, (1<< 6) | (1<<14) | (1<<22) | (1<<30));
mv64x60_clr_bits(bh, 0xf2c0, (1<< 6) | (1<<14) | (1<<22) | (1<<30));
#ifdef CONFIG_SERIAL_MPSC
mv64x60_mpsc0_pdata.mirror_regs = 1;
mv64x60_mpsc0_pdata.cache_mgmt = 1;
mv64x60_mpsc1_pdata.mirror_regs = 1;
mv64x60_mpsc1_pdata.cache_mgmt = 1;
if ((r = platform_get_resource(&mpsc1_device, IORESOURCE_IRQ, 0))
!= NULL) {
r->start = MV64x60_IRQ_SDMA_0;
r->end = MV64x60_IRQ_SDMA_0;
}
#endif
}
/*
* gt64260b_chip_specific_init()
*
* Implement errata work arounds for the GT64260B.
*/
static void __init
gt64260b_chip_specific_init(struct mv64x60_handle *bh,
struct mv64x60_setup_info *si)
{
#ifdef CONFIG_SERIAL_MPSC
struct resource *r;
#endif
#if !defined(CONFIG_NOT_COHERENT_CACHE)
u32 val;
u8 save_exclude;
#endif
if (si->pci_0.enable_bus)
mv64x60_set_bits(bh, MV64x60_PCI0_CMD,
((1<<4) | (1<<5) | (1<<9) | (1<<13)));
if (si->pci_1.enable_bus)
mv64x60_set_bits(bh, MV64x60_PCI1_CMD,
((1<<4) | (1<<5) | (1<<9) | (1<<13)));
/*
* Dave Wilhardt found that bit 4 in the PCI Command registers must
* be set if you are using cache coherency.
*/
#if !defined(CONFIG_NOT_COHERENT_CACHE)
mv64x60_set_bits(bh, GT64260_CPU_WB_PRIORITY_BUFFER_DEPTH, 0xf);
/* Res #MEM-4 -- cpu read buffer to buffer 1 */
if ((mv64x60_read(bh, MV64x60_CPU_MODE) & 0xf0) == 0x40)
mv64x60_set_bits(bh, GT64260_SDRAM_CONFIG, (1<<26));
save_exclude = mv64x60_pci_exclude_bridge;
mv64x60_pci_exclude_bridge = 0;
if (si->pci_0.enable_bus) {
early_read_config_dword(bh->hose_a, 0, PCI_DEVFN(0,0),
PCI_COMMAND, &val);
val |= PCI_COMMAND_INVALIDATE;
early_write_config_dword(bh->hose_a, 0, PCI_DEVFN(0,0),
PCI_COMMAND, val);
}
if (si->pci_1.enable_bus) {
early_read_config_dword(bh->hose_b, 0, PCI_DEVFN(0,0),
PCI_COMMAND, &val);
val |= PCI_COMMAND_INVALIDATE;
early_write_config_dword(bh->hose_b, 0, PCI_DEVFN(0,0),
PCI_COMMAND, val);
}
mv64x60_pci_exclude_bridge = save_exclude;
#endif
/* Disable buffer/descriptor snooping */
mv64x60_clr_bits(bh, 0xf280, (1<< 6) | (1<<14) | (1<<22) | (1<<30));
mv64x60_clr_bits(bh, 0xf2c0, (1<< 6) | (1<<14) | (1<<22) | (1<<30));
#ifdef CONFIG_SERIAL_MPSC
/*
* The 64260B is not supposed to have the bug where the MPSC & ENET
* can't access cache coherent regions. However, testing has shown
* that the MPSC, at least, still has this bug.
*/
mv64x60_mpsc0_pdata.cache_mgmt = 1;
mv64x60_mpsc1_pdata.cache_mgmt = 1;
if ((r = platform_get_resource(&mpsc1_device, IORESOURCE_IRQ, 0))
!= NULL) {
r->start = MV64x60_IRQ_SDMA_0;
r->end = MV64x60_IRQ_SDMA_0;
}
#endif
}
/*
*****************************************************************************
*
* MV64360-Specific Routines
*
*****************************************************************************
*/
/*
* mv64360_translate_size()
*
* On the MV64360, the size register is set similar to the size you get
* from a pci config space BAR register. That is, programmed from LSB to MSB
* as a sequence of 1's followed by a sequence of 0's. IOW, "size -1" with the
* assumption that the size is a power of 2.
*/
static u32 __init
mv64360_translate_size(u32 base_addr, u32 size, u32 num_bits)
{
return mv64x60_mask(size - 1, num_bits);
}
/*
* mv64360_untranslate_size()
*
* Translate the size register value of a window into a window size.
*/
static u32 __init
mv64360_untranslate_size(u32 base_addr, u32 size, u32 num_bits)
{
if (size > 0) {
size >>= (32 - num_bits);
size++;
size <<= (32 - num_bits);
}
return size;
}
/*
* mv64360_set_pci2mem_window()
*
* The PCI->MEM window registers are actually in PCI config space so need
* to set them by setting the correct config space BARs.
*/
struct {
u32 fcn;
u32 base_hi_bar;
u32 base_lo_bar;
} static mv64360_reg_addrs[2][4] __initdata = {
{{ 0, 0x14, 0x10 }, { 0, 0x1c, 0x18 },
{ 1, 0x14, 0x10 }, { 1, 0x1c, 0x18 }},
{{ 0, 0x94, 0x90 }, { 0, 0x9c, 0x98 },
{ 1, 0x94, 0x90 }, { 1, 0x9c, 0x98 }}
};
static void __init
mv64360_set_pci2mem_window(struct pci_controller *hose, u32 bus, u32 window,
u32 base)
{
u8 save_exclude;
pr_debug("set pci->mem window: %d, hose: %d, base: 0x%x\n", window,
hose->index, base);
save_exclude = mv64x60_pci_exclude_bridge;
mv64x60_pci_exclude_bridge = 0;
early_write_config_dword(hose, 0,
PCI_DEVFN(0, mv64360_reg_addrs[bus][window].fcn),
mv64360_reg_addrs[bus][window].base_hi_bar, 0);
early_write_config_dword(hose, 0,
PCI_DEVFN(0, mv64360_reg_addrs[bus][window].fcn),
mv64360_reg_addrs[bus][window].base_lo_bar,
mv64x60_mask(base,20) | 0xc);
mv64x60_pci_exclude_bridge = save_exclude;
}
/*
* mv64360_set_pci2regs_window()
*
* Set where the bridge's registers appear in PCI MEM space.
*/
static u32 mv64360_offset[2][2] __initdata = {{0x20, 0x24}, {0xa0, 0xa4}};
static void __init
mv64360_set_pci2regs_window(struct mv64x60_handle *bh,
struct pci_controller *hose, u32 bus, u32 base)
{
u8 save_exclude;
pr_debug("set pci->internal regs hose: %d, base: 0x%x\n", hose->index,
base);
save_exclude = mv64x60_pci_exclude_bridge;
mv64x60_pci_exclude_bridge = 0;
early_write_config_dword(hose, 0, PCI_DEVFN(0,0),
mv64360_offset[bus][0], (base << 16));
early_write_config_dword(hose, 0, PCI_DEVFN(0,0),
mv64360_offset[bus][1], 0);
mv64x60_pci_exclude_bridge = save_exclude;
}
/*
* mv64360_is_enabled_32bit()
*
* On a MV64360, a window is enabled by either clearing a bit in the
* CPU BAR Enable reg or setting a bit in the window's base reg.
* Note that this doesn't work for windows on the PCI slave side but we don't
* check those so its okay.
*/
static u32 __init
mv64360_is_enabled_32bit(struct mv64x60_handle *bh, u32 window)
{
u32 extra, rc = 0;
if (((mv64360_32bit_windows[window].base_reg != 0) &&
(mv64360_32bit_windows[window].size_reg != 0)) ||
(window == MV64x60_CPU2SRAM_WIN)) {
extra = mv64360_32bit_windows[window].extra;
switch (extra & MV64x60_EXTRA_MASK) {
case MV64x60_EXTRA_CPUWIN_ENAB:
rc = (mv64x60_read(bh, MV64360_CPU_BAR_ENABLE) &
(1 << (extra & 0x1f))) == 0;
break;
case MV64x60_EXTRA_CPUPROT_ENAB:
rc = (mv64x60_read(bh,
mv64360_32bit_windows[window].base_reg) &
(1 << (extra & 0x1f))) != 0;
break;
case MV64x60_EXTRA_ENET_ENAB:
rc = (mv64x60_read(bh, MV64360_ENET2MEM_BAR_ENABLE) &
(1 << (extra & 0x7))) == 0;
break;
case MV64x60_EXTRA_MPSC_ENAB:
rc = (mv64x60_read(bh, MV64360_MPSC2MEM_BAR_ENABLE) &
(1 << (extra & 0x3))) == 0;
break;
case MV64x60_EXTRA_IDMA_ENAB:
rc = (mv64x60_read(bh, MV64360_IDMA2MEM_BAR_ENABLE) &
(1 << (extra & 0x7))) == 0;
break;
default:
printk(KERN_ERR "mv64360_is_enabled: %s\n",
"32bit table corrupted");
}
}
return rc;
}
/*
* mv64360_enable_window_32bit()
*
* On a MV64360, a window is enabled by either clearing a bit in the
* CPU BAR Enable reg or setting a bit in the window's base reg.
*/
static void __init
mv64360_enable_window_32bit(struct mv64x60_handle *bh, u32 window)
{
u32 extra;
pr_debug("enable 32bit window: %d\n", window);
if (((mv64360_32bit_windows[window].base_reg != 0) &&
(mv64360_32bit_windows[window].size_reg != 0)) ||
(window == MV64x60_CPU2SRAM_WIN)) {
extra = mv64360_32bit_windows[window].extra;
switch (extra & MV64x60_EXTRA_MASK) {
case MV64x60_EXTRA_CPUWIN_ENAB:
mv64x60_clr_bits(bh, MV64360_CPU_BAR_ENABLE,
(1 << (extra & 0x1f)));
break;
case MV64x60_EXTRA_CPUPROT_ENAB:
mv64x60_set_bits(bh,
mv64360_32bit_windows[window].base_reg,
(1 << (extra & 0x1f)));
break;
case MV64x60_EXTRA_ENET_ENAB:
mv64x60_clr_bits(bh, MV64360_ENET2MEM_BAR_ENABLE,
(1 << (extra & 0x7)));
break;
case MV64x60_EXTRA_MPSC_ENAB:
mv64x60_clr_bits(bh, MV64360_MPSC2MEM_BAR_ENABLE,
(1 << (extra & 0x3)));
break;
case MV64x60_EXTRA_IDMA_ENAB:
mv64x60_clr_bits(bh, MV64360_IDMA2MEM_BAR_ENABLE,
(1 << (extra & 0x7)));
break;
default:
printk(KERN_ERR "mv64360_enable: %s\n",
"32bit table corrupted");
}
}
}
/*
* mv64360_disable_window_32bit()
*
* On a MV64360, a window is disabled by either setting a bit in the
* CPU BAR Enable reg or clearing a bit in the window's base reg.
*/
static void __init
mv64360_disable_window_32bit(struct mv64x60_handle *bh, u32 window)
{
u32 extra;
pr_debug("disable 32bit window: %d, base_reg: 0x%x, size_reg: 0x%x\n",
window, mv64360_32bit_windows[window].base_reg,
mv64360_32bit_windows[window].size_reg);
if (((mv64360_32bit_windows[window].base_reg != 0) &&
(mv64360_32bit_windows[window].size_reg != 0)) ||
(window == MV64x60_CPU2SRAM_WIN)) {
extra = mv64360_32bit_windows[window].extra;
switch (extra & MV64x60_EXTRA_MASK) {
case MV64x60_EXTRA_CPUWIN_ENAB:
mv64x60_set_bits(bh, MV64360_CPU_BAR_ENABLE,
(1 << (extra & 0x1f)));
break;
case MV64x60_EXTRA_CPUPROT_ENAB:
mv64x60_clr_bits(bh,
mv64360_32bit_windows[window].base_reg,
(1 << (extra & 0x1f)));
break;
case MV64x60_EXTRA_ENET_ENAB:
mv64x60_set_bits(bh, MV64360_ENET2MEM_BAR_ENABLE,
(1 << (extra & 0x7)));
break;
case MV64x60_EXTRA_MPSC_ENAB:
mv64x60_set_bits(bh, MV64360_MPSC2MEM_BAR_ENABLE,
(1 << (extra & 0x3)));
break;
case MV64x60_EXTRA_IDMA_ENAB:
mv64x60_set_bits(bh, MV64360_IDMA2MEM_BAR_ENABLE,
(1 << (extra & 0x7)));
break;
default:
printk(KERN_ERR "mv64360_disable: %s\n",
"32bit table corrupted");
}
}
}
/*
* mv64360_enable_window_64bit()
*
* On the MV64360, a 64-bit window is enabled by setting a bit in the window's
* base reg.
*/
static void __init
mv64360_enable_window_64bit(struct mv64x60_handle *bh, u32 window)
{
pr_debug("enable 64bit window: %d\n", window);
if ((mv64360_64bit_windows[window].base_lo_reg!= 0) &&
(mv64360_64bit_windows[window].size_reg != 0)) {
if ((mv64360_64bit_windows[window].extra & MV64x60_EXTRA_MASK)
== MV64x60_EXTRA_PCIACC_ENAB)
mv64x60_set_bits(bh,
mv64360_64bit_windows[window].base_lo_reg,
(1 << (mv64360_64bit_windows[window].extra &
0x1f)));
else
printk(KERN_ERR "mv64360_enable: %s\n",
"64bit table corrupted");
}
}
/*
* mv64360_disable_window_64bit()
*
* On a MV64360, a 64-bit window is disabled by clearing a bit in the window's
* base reg.
*/
static void __init
mv64360_disable_window_64bit(struct mv64x60_handle *bh, u32 window)
{
pr_debug("disable 64bit window: %d, base_reg: 0x%x, size_reg: 0x%x\n",
window, mv64360_64bit_windows[window].base_lo_reg,
mv64360_64bit_windows[window].size_reg);
if ((mv64360_64bit_windows[window].base_lo_reg != 0) &&
(mv64360_64bit_windows[window].size_reg != 0)) {
if ((mv64360_64bit_windows[window].extra & MV64x60_EXTRA_MASK)
== MV64x60_EXTRA_PCIACC_ENAB)
mv64x60_clr_bits(bh,
mv64360_64bit_windows[window].base_lo_reg,
(1 << (mv64360_64bit_windows[window].extra &
0x1f)));
else
printk(KERN_ERR "mv64360_disable: %s\n",
"64bit table corrupted");
}
}
/*
* mv64360_disable_all_windows()
*
* The MV64360 has a few windows that aren't represented in the table of
* windows at the top of this file. This routine turns all of them off
* except for the memory controller windows, of course.
*/
static void __init
mv64360_disable_all_windows(struct mv64x60_handle *bh,
struct mv64x60_setup_info *si)
{
u32 preserve, i;
/* Disable 32bit windows (don't disable cpu->mem windows) */
for (i=MV64x60_CPU2DEV_0_WIN; i<MV64x60_32BIT_WIN_COUNT; i++) {
if (i < 32)
preserve = si->window_preserve_mask_32_lo & (1 << i);
else
preserve = si->window_preserve_mask_32_hi & (1<<(i-32));
if (!preserve)
mv64360_disable_window_32bit(bh, i);
}
/* Disable 64bit windows */
for (i=0; i<MV64x60_64BIT_WIN_COUNT; i++)
if (!(si->window_preserve_mask_64 & (1<<i)))
mv64360_disable_window_64bit(bh, i);
/* Turn off PCI->MEM access cntl wins not in mv64360_64bit_windows[] */
mv64x60_clr_bits(bh, MV64x60_PCI0_ACC_CNTL_4_BASE_LO, 0);
mv64x60_clr_bits(bh, MV64x60_PCI0_ACC_CNTL_5_BASE_LO, 0);
mv64x60_clr_bits(bh, MV64x60_PCI1_ACC_CNTL_4_BASE_LO, 0);
mv64x60_clr_bits(bh, MV64x60_PCI1_ACC_CNTL_5_BASE_LO, 0);
/* Disable all PCI-><whatever> windows */
mv64x60_set_bits(bh, MV64x60_PCI0_BAR_ENABLE, 0x0000f9ff);
mv64x60_set_bits(bh, MV64x60_PCI1_BAR_ENABLE, 0x0000f9ff);
}
/*
* mv64360_config_io2mem_windows()
*
* ENET, MPSC, and IDMA ctlrs on the MV64[34]60 have separate windows that
* must be set up so that the respective ctlr can access system memory.
*/
static u32 enet_tab[MV64x60_CPU2MEM_WINDOWS] __initdata = {
MV64x60_ENET2MEM_0_WIN, MV64x60_ENET2MEM_1_WIN,
MV64x60_ENET2MEM_2_WIN, MV64x60_ENET2MEM_3_WIN,
};
static u32 mpsc_tab[MV64x60_CPU2MEM_WINDOWS] __initdata = {
MV64x60_MPSC2MEM_0_WIN, MV64x60_MPSC2MEM_1_WIN,
MV64x60_MPSC2MEM_2_WIN, MV64x60_MPSC2MEM_3_WIN,
};
static u32 idma_tab[MV64x60_CPU2MEM_WINDOWS] __initdata = {
MV64x60_IDMA2MEM_0_WIN, MV64x60_IDMA2MEM_1_WIN,
MV64x60_IDMA2MEM_2_WIN, MV64x60_IDMA2MEM_3_WIN,
};
static u32 dram_selects[MV64x60_CPU2MEM_WINDOWS] __initdata =
{ 0xe, 0xd, 0xb, 0x7 };
static void __init
mv64360_config_io2mem_windows(struct mv64x60_handle *bh,
struct mv64x60_setup_info *si,
u32 mem_windows[MV64x60_CPU2MEM_WINDOWS][2])
{
u32 i, win;
pr_debug("config_io2regs_windows: enet, mpsc, idma -> bridge regs\n");
mv64x60_write(bh, MV64360_ENET2MEM_ACC_PROT_0, 0);
mv64x60_write(bh, MV64360_ENET2MEM_ACC_PROT_1, 0);
mv64x60_write(bh, MV64360_ENET2MEM_ACC_PROT_2, 0);
mv64x60_write(bh, MV64360_MPSC2MEM_ACC_PROT_0, 0);
mv64x60_write(bh, MV64360_MPSC2MEM_ACC_PROT_1, 0);
mv64x60_write(bh, MV64360_IDMA2MEM_ACC_PROT_0, 0);
mv64x60_write(bh, MV64360_IDMA2MEM_ACC_PROT_1, 0);
mv64x60_write(bh, MV64360_IDMA2MEM_ACC_PROT_2, 0);
mv64x60_write(bh, MV64360_IDMA2MEM_ACC_PROT_3, 0);
/* Assume that mem ctlr has no more windows than embedded I/O ctlr */
for (win=MV64x60_CPU2MEM_0_WIN,i=0;win<=MV64x60_CPU2MEM_3_WIN;win++,i++)
if (bh->ci->is_enabled_32bit(bh, win)) {
mv64x60_set_32bit_window(bh, enet_tab[i],
mem_windows[i][0], mem_windows[i][1],
(dram_selects[i] << 8) |
(si->enet_options[i] & 0x3000));
bh->ci->enable_window_32bit(bh, enet_tab[i]);
/* Give enet r/w access to memory region */
mv64x60_set_bits(bh, MV64360_ENET2MEM_ACC_PROT_0,
(0x3 << (i << 1)));
mv64x60_set_bits(bh, MV64360_ENET2MEM_ACC_PROT_1,
(0x3 << (i << 1)));
mv64x60_set_bits(bh, MV64360_ENET2MEM_ACC_PROT_2,
(0x3 << (i << 1)));
mv64x60_set_32bit_window(bh, mpsc_tab[i],
mem_windows[i][0], mem_windows[i][1],
(dram_selects[i] << 8) |
(si->mpsc_options[i] & 0x3000));
bh->ci->enable_window_32bit(bh, mpsc_tab[i]);
/* Give mpsc r/w access to memory region */
mv64x60_set_bits(bh, MV64360_MPSC2MEM_ACC_PROT_0,
(0x3 << (i << 1)));
mv64x60_set_bits(bh, MV64360_MPSC2MEM_ACC_PROT_1,
(0x3 << (i << 1)));
mv64x60_set_32bit_window(bh, idma_tab[i],
mem_windows[i][0], mem_windows[i][1],
(dram_selects[i] << 8) |
(si->idma_options[i] & 0x3000));
bh->ci->enable_window_32bit(bh, idma_tab[i]);
/* Give idma r/w access to memory region */
mv64x60_set_bits(bh, MV64360_IDMA2MEM_ACC_PROT_0,
(0x3 << (i << 1)));
mv64x60_set_bits(bh, MV64360_IDMA2MEM_ACC_PROT_1,
(0x3 << (i << 1)));
mv64x60_set_bits(bh, MV64360_IDMA2MEM_ACC_PROT_2,
(0x3 << (i << 1)));
mv64x60_set_bits(bh, MV64360_IDMA2MEM_ACC_PROT_3,
(0x3 << (i << 1)));
}
}
/*
* mv64360_set_mpsc2regs_window()
*
* MPSC has a window to the bridge's internal registers. Call this routine
* to change that window so it doesn't conflict with the windows mapping the
* mpsc to system memory.
*/
static void __init
mv64360_set_mpsc2regs_window(struct mv64x60_handle *bh, u32 base)
{
pr_debug("set mpsc->internal regs, base: 0x%x\n", base);
mv64x60_write(bh, MV64360_MPSC2REGS_BASE, base & 0xffff0000);
}
/*
* mv64360_chip_specific_init()
*
* Implement errata work arounds for the MV64360.
*/
static void __init
mv64360_chip_specific_init(struct mv64x60_handle *bh,
struct mv64x60_setup_info *si)
{
#if !defined(CONFIG_NOT_COHERENT_CACHE)
mv64x60_set_bits(bh, MV64360_D_UNIT_CONTROL_HIGH, (1<<24));
#endif
#ifdef CONFIG_SERIAL_MPSC
mv64x60_mpsc0_pdata.brg_can_tune = 1;
mv64x60_mpsc0_pdata.cache_mgmt = 1;
mv64x60_mpsc1_pdata.brg_can_tune = 1;
mv64x60_mpsc1_pdata.cache_mgmt = 1;
#endif
}
/*
* mv64460_chip_specific_init()
*
* Implement errata work arounds for the MV64460.
*/
static void __init
mv64460_chip_specific_init(struct mv64x60_handle *bh,
struct mv64x60_setup_info *si)
{
#if !defined(CONFIG_NOT_COHERENT_CACHE)
mv64x60_set_bits(bh, MV64360_D_UNIT_CONTROL_HIGH, (1<<24) | (1<<25));
mv64x60_set_bits(bh, MV64460_D_UNIT_MMASK, (1<<1) | (1<<4));
#endif
#ifdef CONFIG_SERIAL_MPSC
mv64x60_mpsc0_pdata.brg_can_tune = 1;
mv64x60_mpsc0_pdata.cache_mgmt = 1;
mv64x60_mpsc1_pdata.brg_can_tune = 1;
mv64x60_mpsc1_pdata.cache_mgmt = 1;
#endif
}
#if defined(CONFIG_SYSFS) && !defined(CONFIG_GT64260)
/* Export the hotswap register via sysfs for enum event monitoring */
#define VAL_LEN_MAX 11 /* 32-bit hex or dec stringified number + '\n' */
DECLARE_MUTEX(mv64xxx_hs_lock);
static ssize_t
mv64xxx_hs_reg_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
{
u32 v;
u8 save_exclude;
if (off > 0)
return 0;
if (count < VAL_LEN_MAX)
return -EINVAL;
if (down_interruptible(&mv64xxx_hs_lock))
return -ERESTARTSYS;
save_exclude = mv64x60_pci_exclude_bridge;
mv64x60_pci_exclude_bridge = 0;
early_read_config_dword(&sysfs_hose_a, 0, PCI_DEVFN(0, 0),
MV64360_PCICFG_CPCI_HOTSWAP, &v);
mv64x60_pci_exclude_bridge = save_exclude;
up(&mv64xxx_hs_lock);
return sprintf(buf, "0x%08x\n", v);
}
static ssize_t
mv64xxx_hs_reg_write(struct kobject *kobj, char *buf, loff_t off, size_t count)
{
u32 v;
u8 save_exclude;
if (off > 0)
return 0;
if (count <= 0)
return -EINVAL;
if (sscanf(buf, "%i", &v) == 1) {
if (down_interruptible(&mv64xxx_hs_lock))
return -ERESTARTSYS;
save_exclude = mv64x60_pci_exclude_bridge;
mv64x60_pci_exclude_bridge = 0;
early_write_config_dword(&sysfs_hose_a, 0, PCI_DEVFN(0, 0),
MV64360_PCICFG_CPCI_HOTSWAP, v);
mv64x60_pci_exclude_bridge = save_exclude;
up(&mv64xxx_hs_lock);
}
else
count = -EINVAL;
return count;
}
static struct bin_attribute mv64xxx_hs_reg_attr = { /* Hotswap register */
.attr = {
.name = "hs_reg",
.mode = S_IRUGO | S_IWUSR,
.owner = THIS_MODULE,
},
.size = VAL_LEN_MAX,
.read = mv64xxx_hs_reg_read,
.write = mv64xxx_hs_reg_write,
};
/* Provide sysfs file indicating if this platform supports the hs_reg */
static ssize_t
mv64xxx_hs_reg_valid_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct platform_device *pdev;
struct mv64xxx_pdata *pdp;
u32 v;
pdev = container_of(dev, struct platform_device, dev);
pdp = (struct mv64xxx_pdata *)pdev->dev.platform_data;
if (down_interruptible(&mv64xxx_hs_lock))
return -ERESTARTSYS;
v = pdp->hs_reg_valid;
up(&mv64xxx_hs_lock);
return sprintf(buf, "%i\n", v);
}
static DEVICE_ATTR(hs_reg_valid, S_IRUGO, mv64xxx_hs_reg_valid_show, NULL);
static int __init
mv64xxx_sysfs_init(void)
{
sysfs_create_bin_file(&mv64xxx_device.dev.kobj, &mv64xxx_hs_reg_attr);
sysfs_create_file(&mv64xxx_device.dev.kobj,&dev_attr_hs_reg_valid.attr);
return 0;
}
subsys_initcall(mv64xxx_sysfs_init);
#endif
