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android_kernel_xiaomi_sm8350/arch/ppc/syslib/mv64x60.c
Jean Delvare 2f0a8df40f [I2C] i2c-mv64xxx: Don't set i2c_adapter.retries 
I2C adapter drivers are supposed to handle retries on nack by themselves
if they do, so there's no point in setting .retries if they don't.

As this retry mechanism is going away (at least in its current form),
clean this up now so that we don't get build failures later.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Mark A. Greer <mgreer@mvista.com>
2008-01-26 15:04:01 +00:00

2483 lines
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/*
* 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/mutex.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 = {
.port_number = 0,
};
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 = &eth0_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 = {
.port_number = 1,
};
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 = &eth1_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 = {
.port_number = 2,
};
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 = &eth2_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 */
};
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
#ifdef CONFIG_WATCHDOG
static struct mv64x60_wdt_pdata mv64x60_wdt_pdata = {
.timeout = 10, /* default watchdog expiry in seconds */
.bus_clk = 133, /* default bus clock in MHz */
};
static struct resource mv64x60_wdt_resources[] = {
[0] = {
.name = "mv64x60 wdt base",
.start = MV64x60_WDT_WDC,
.end = MV64x60_WDT_WDC + 8 - 1, /* two 32-bit registers */
.flags = IORESOURCE_MEM,
},
};
static struct platform_device wdt_device = {
.name = MV64x60_WDT_NAME,
.id = 0,
.num_resources = ARRAY_SIZE(mv64x60_wdt_resources),
.resource = mv64x60_wdt_resources,
.dev = {
.platform_data = &mv64x60_wdt_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
&eth0_device,
#endif
#ifdef CONFIG_MV643XX_ETH_1
&eth1_device,
#endif
#ifdef CONFIG_MV643XX_ETH_2
&eth2_device,
#endif
#ifdef CONFIG_I2C_MV64XXX
&i2c_device,
#endif
#ifdef CONFIG_MV64X60_WDT
&wdt_device,
#endif
#if defined(CONFIG_SYSFS) && !defined(CONFIG_GT64260)
&mv64xxx_device,
#endif
};
/*
*****************************************************************************
*
* Bridge Initialization Routines
*
*****************************************************************************
*/
/*
* mv64x60_init()
*
* Initialize 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 = &gt64260a_ci;
break;
case MV64x60_TYPE_GT64260B:
bh->ci = &gt64260b_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 workarounds 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 workarounds 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 workarounds 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 workarounds 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' */
static DEFINE_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 (mutex_lock_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;
mutex_unlock(&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 (mutex_lock_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;
mutex_unlock(&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,
},
.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 (mutex_lock_interruptible(&mv64xxx_hs_lock))
return -ERESTARTSYS;
v = pdp->hs_reg_valid;
mutex_unlock(&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
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