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android_kernel_xiaomi_sm8350/arch/ppc/platforms/cpci690.c
Adrian Cox bbbe1212bd [PATCH] ppc: Fix platform_notify functions marked __init 
While adding USB support to an MV64360 based board this week, I
discovered that all MV64x60 boards in the kernel have platform_notify
functions marked with __init. This causes an oops if a device is added
after boot.

The patch below removes the __init markers. I do not have all these
boards to test on, but the change seems very unlikely to break anything
else.

Signed-off-by: Adrian Cox <adrian@humboldt.co.uk>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-17 13:23:21 +11:00

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/*
* Board setup routines for the Force CPCI690 board.
*
* Author: Mark A. Greer <mgreer@mvista.com>
*
* 2003 (c) MontaVista Software, Inc. This file is licensed under
* the terms of the GNU General Public License version 2. This programr
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
#include <linux/config.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/ide.h>
#include <linux/irq.h>
#include <linux/fs.h>
#include <linux/seq_file.h>
#include <linux/console.h>
#include <linux/initrd.h>
#include <linux/root_dev.h>
#include <linux/mv643xx.h>
#include <linux/platform_device.h>
#include <asm/bootinfo.h>
#include <asm/machdep.h>
#include <asm/todc.h>
#include <asm/time.h>
#include <asm/mv64x60.h>
#include <platforms/cpci690.h>
#define BOARD_VENDOR "Force"
#define BOARD_MACHINE "CPCI690"
/* Set IDE controllers into Native mode? */
#define SET_PCI_IDE_NATIVE
static struct mv64x60_handle bh;
static void __iomem *cpci690_br_base;
TODC_ALLOC();
static int __init
cpci690_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
{
struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
if (hose->index == 0) {
static char pci_irq_table[][4] =
/*
* PCI IDSEL/INTPIN->INTLINE
* A B C D
*/
{
{ 90, 91, 88, 89 }, /* IDSEL 30/20 - Sentinel */
};
const long min_idsel = 20, max_idsel = 20, irqs_per_slot = 4;
return PCI_IRQ_TABLE_LOOKUP;
} else {
static char pci_irq_table[][4] =
/*
* PCI IDSEL/INTPIN->INTLINE
* A B C D
*/
{
{ 93, 94, 95, 92 }, /* IDSEL 28/18 - PMC slot 2 */
{ 0, 0, 0, 0 }, /* IDSEL 29/19 - Not used */
{ 94, 95, 92, 93 }, /* IDSEL 30/20 - PMC slot 1 */
};
const long min_idsel = 18, max_idsel = 20, irqs_per_slot = 4;
return PCI_IRQ_TABLE_LOOKUP;
}
}
#define GB (1024UL * 1024UL * 1024UL)
static u32
cpci690_get_bus_freq(void)
{
if (boot_mem_size >= (1*GB)) /* bus speed based on mem size */
return 100000000;
else
return 133333333;
}
static const unsigned int cpu_750xx[32] = { /* 750FX & 750GX */
0, 0, 2, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,/* 0-15*/
16, 17, 18, 19, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 0 /*16-31*/
};
static int
cpci690_get_cpu_freq(void)
{
unsigned long pll_cfg;
pll_cfg = (mfspr(SPRN_HID1) & 0xf8000000) >> 27;
return cpci690_get_bus_freq() * cpu_750xx[pll_cfg]/2;
}
static void __init
cpci690_setup_bridge(void)
{
struct mv64x60_setup_info si;
int i;
memset(&si, 0, sizeof(si));
si.phys_reg_base = CONFIG_MV64X60_NEW_BASE;
si.pci_0.enable_bus = 1;
si.pci_0.pci_io.cpu_base = CPCI690_PCI0_IO_START_PROC_ADDR;
si.pci_0.pci_io.pci_base_hi = 0;
si.pci_0.pci_io.pci_base_lo = CPCI690_PCI0_IO_START_PCI_ADDR;
si.pci_0.pci_io.size = CPCI690_PCI0_IO_SIZE;
si.pci_0.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
si.pci_0.pci_mem[0].cpu_base = CPCI690_PCI0_MEM_START_PROC_ADDR;
si.pci_0.pci_mem[0].pci_base_hi = CPCI690_PCI0_MEM_START_PCI_HI_ADDR;
si.pci_0.pci_mem[0].pci_base_lo = CPCI690_PCI0_MEM_START_PCI_LO_ADDR;
si.pci_0.pci_mem[0].size = CPCI690_PCI0_MEM_SIZE;
si.pci_0.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
si.pci_0.pci_cmd_bits = 0;
si.pci_0.latency_timer = 0x80;
si.pci_1.enable_bus = 1;
si.pci_1.pci_io.cpu_base = CPCI690_PCI1_IO_START_PROC_ADDR;
si.pci_1.pci_io.pci_base_hi = 0;
si.pci_1.pci_io.pci_base_lo = CPCI690_PCI1_IO_START_PCI_ADDR;
si.pci_1.pci_io.size = CPCI690_PCI1_IO_SIZE;
si.pci_1.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
si.pci_1.pci_mem[0].cpu_base = CPCI690_PCI1_MEM_START_PROC_ADDR;
si.pci_1.pci_mem[0].pci_base_hi = CPCI690_PCI1_MEM_START_PCI_HI_ADDR;
si.pci_1.pci_mem[0].pci_base_lo = CPCI690_PCI1_MEM_START_PCI_LO_ADDR;
si.pci_1.pci_mem[0].size = CPCI690_PCI1_MEM_SIZE;
si.pci_1.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
si.pci_1.pci_cmd_bits = 0;
si.pci_1.latency_timer = 0x80;
for (i=0; i<MV64x60_CPU2MEM_WINDOWS; i++) {
si.cpu_prot_options[i] = 0;
si.cpu_snoop_options[i] = GT64260_CPU_SNOOP_WB;
si.pci_0.acc_cntl_options[i] =
GT64260_PCI_ACC_CNTL_DREADEN |
GT64260_PCI_ACC_CNTL_RDPREFETCH |
GT64260_PCI_ACC_CNTL_RDLINEPREFETCH |
GT64260_PCI_ACC_CNTL_RDMULPREFETCH |
GT64260_PCI_ACC_CNTL_SWAP_NONE |
GT64260_PCI_ACC_CNTL_MBURST_32_BTYES;
si.pci_0.snoop_options[i] = GT64260_PCI_SNOOP_WB;
si.pci_1.acc_cntl_options[i] =
GT64260_PCI_ACC_CNTL_DREADEN |
GT64260_PCI_ACC_CNTL_RDPREFETCH |
GT64260_PCI_ACC_CNTL_RDLINEPREFETCH |
GT64260_PCI_ACC_CNTL_RDMULPREFETCH |
GT64260_PCI_ACC_CNTL_SWAP_NONE |
GT64260_PCI_ACC_CNTL_MBURST_32_BTYES;
si.pci_1.snoop_options[i] = GT64260_PCI_SNOOP_WB;
}
/* Lookup PCI host bridges */
if (mv64x60_init(&bh, &si))
printk(KERN_ERR "Bridge initialization failed.\n");
pci_dram_offset = 0; /* System mem at same addr on PCI & cpu bus */
ppc_md.pci_swizzle = common_swizzle;
ppc_md.pci_map_irq = cpci690_map_irq;
ppc_md.pci_exclude_device = mv64x60_pci_exclude_device;
mv64x60_set_bus(&bh, 0, 0);
bh.hose_a->first_busno = 0;
bh.hose_a->last_busno = 0xff;
bh.hose_a->last_busno = pciauto_bus_scan(bh.hose_a, 0);
bh.hose_b->first_busno = bh.hose_a->last_busno + 1;
mv64x60_set_bus(&bh, 1, bh.hose_b->first_busno);
bh.hose_b->last_busno = 0xff;
bh.hose_b->last_busno = pciauto_bus_scan(bh.hose_b,
bh.hose_b->first_busno);
}
static void __init
cpci690_setup_peripherals(void)
{
/* Set up windows to CPLD, RTC/TODC, IPMI. */
mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_0_WIN, CPCI690_BR_BASE,
CPCI690_BR_SIZE, 0);
bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_0_WIN);
cpci690_br_base = ioremap(CPCI690_BR_BASE, CPCI690_BR_SIZE);
mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_1_WIN, CPCI690_TODC_BASE,
CPCI690_TODC_SIZE, 0);
bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_1_WIN);
TODC_INIT(TODC_TYPE_MK48T35, 0, 0,
ioremap(CPCI690_TODC_BASE, CPCI690_TODC_SIZE), 8);
mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_2_WIN, CPCI690_IPMI_BASE,
CPCI690_IPMI_SIZE, 0);
bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_2_WIN);
mv64x60_set_bits(&bh, MV64x60_PCI0_ARBITER_CNTL, (1<<31));
mv64x60_set_bits(&bh, MV64x60_PCI1_ARBITER_CNTL, (1<<31));
mv64x60_set_bits(&bh, MV64x60_CPU_MASTER_CNTL, (1<<9)); /* Only 1 cpu */
/*
* Turn off timer/counters. Not turning off watchdog timer because
* can't read its reg on the 64260A so don't know if we'll be enabling
* or disabling.
*/
mv64x60_clr_bits(&bh, MV64x60_TIMR_CNTR_0_3_CNTL,
((1<<0) | (1<<8) | (1<<16) | (1<<24)));
mv64x60_clr_bits(&bh, GT64260_TIMR_CNTR_4_7_CNTL,
((1<<0) | (1<<8) | (1<<16) | (1<<24)));
/*
* Set MPSC Multiplex RMII
* NOTE: ethernet driver modifies bit 0 and 1
*/
mv64x60_write(&bh, GT64260_MPP_SERIAL_PORTS_MULTIPLEX, 0x00001102);
#define GPP_EXTERNAL_INTERRUPTS \
((1<<24) | (1<<25) | (1<<26) | (1<<27) | \
(1<<28) | (1<<29) | (1<<30) | (1<<31))
/* PCI interrupts are inputs */
mv64x60_clr_bits(&bh, MV64x60_GPP_IO_CNTL, GPP_EXTERNAL_INTERRUPTS);
/* PCI interrupts are active low */
mv64x60_set_bits(&bh, MV64x60_GPP_LEVEL_CNTL, GPP_EXTERNAL_INTERRUPTS);
/* Clear any pending interrupts for these inputs and enable them. */
mv64x60_write(&bh, MV64x60_GPP_INTR_CAUSE, ~GPP_EXTERNAL_INTERRUPTS);
mv64x60_set_bits(&bh, MV64x60_GPP_INTR_MASK, GPP_EXTERNAL_INTERRUPTS);
/* Route MPP interrupt inputs to GPP */
mv64x60_write(&bh, MV64x60_MPP_CNTL_2, 0x00000000);
mv64x60_write(&bh, MV64x60_MPP_CNTL_3, 0x00000000);
}
static void __init
cpci690_setup_arch(void)
{
if (ppc_md.progress)
ppc_md.progress("cpci690_setup_arch: enter", 0);
#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start)
ROOT_DEV = Root_RAM0;
else
#endif
#ifdef CONFIG_ROOT_NFS
ROOT_DEV = Root_NFS;
#else
ROOT_DEV = Root_SDA2;
#endif
if (ppc_md.progress)
ppc_md.progress("cpci690_setup_arch: Enabling L2 cache", 0);
/* Enable L2 and L3 caches (if 745x) */
_set_L2CR(_get_L2CR() | L2CR_L2E);
_set_L3CR(_get_L3CR() | L3CR_L3E);
if (ppc_md.progress)
ppc_md.progress("cpci690_setup_arch: Initializing bridge", 0);
cpci690_setup_bridge(); /* set up PCI bridge(s) */
cpci690_setup_peripherals(); /* set up chip selects/GPP/MPP etc */
if (ppc_md.progress)
ppc_md.progress("cpci690_setup_arch: bridge init complete", 0);
printk(KERN_INFO "%s %s port (C) 2003 MontaVista Software, Inc. "
"(source@mvista.com)\n", BOARD_VENDOR, BOARD_MACHINE);
if (ppc_md.progress)
ppc_md.progress("cpci690_setup_arch: exit", 0);
}
/* Platform device data fixup routines. */
#if defined(CONFIG_SERIAL_MPSC)
static void __init
cpci690_fixup_mpsc_pdata(struct platform_device *pdev)
{
struct mpsc_pdata *pdata;
pdata = (struct mpsc_pdata *)pdev->dev.platform_data;
pdata->max_idle = 40;
pdata->default_baud = CPCI690_MPSC_BAUD;
pdata->brg_clk_src = CPCI690_MPSC_CLK_SRC;
pdata->brg_clk_freq = cpci690_get_bus_freq();
}
static int
cpci690_platform_notify(struct device *dev)
{
static struct {
char *bus_id;
void ((*rtn)(struct platform_device *pdev));
} dev_map[] = {
{ MPSC_CTLR_NAME ".0", cpci690_fixup_mpsc_pdata },
{ MPSC_CTLR_NAME ".1", cpci690_fixup_mpsc_pdata },
};
struct platform_device *pdev;
int i;
if (dev && dev->bus_id)
for (i=0; i<ARRAY_SIZE(dev_map); i++)
if (!strncmp(dev->bus_id, dev_map[i].bus_id,
BUS_ID_SIZE)) {
pdev = container_of(dev,
struct platform_device, dev);
dev_map[i].rtn(pdev);
}
return 0;
}
#endif
static void
cpci690_reset_board(void)
{
u32 i = 10000;
local_irq_disable();
out_8((cpci690_br_base + CPCI690_BR_SW_RESET), 0x11);
while (i != 0) i++;
panic("restart failed\n");
}
static void
cpci690_restart(char *cmd)
{
cpci690_reset_board();
}
static void
cpci690_halt(void)
{
while (1);
/* NOTREACHED */
}
static void
cpci690_power_off(void)
{
cpci690_halt();
/* NOTREACHED */
}
static int
cpci690_show_cpuinfo(struct seq_file *m)
{
char *s;
seq_printf(m, "cpu MHz\t\t: %d\n",
(cpci690_get_cpu_freq() + 500000) / 1000000);
seq_printf(m, "bus MHz\t\t: %d\n",
(cpci690_get_bus_freq() + 500000) / 1000000);
seq_printf(m, "vendor\t\t: " BOARD_VENDOR "\n");
seq_printf(m, "machine\t\t: " BOARD_MACHINE "\n");
seq_printf(m, "FPGA Revision\t: %d\n",
in_8(cpci690_br_base + CPCI690_BR_MEM_CTLR) >> 5);
switch(bh.type) {
case MV64x60_TYPE_GT64260A:
s = "gt64260a";
break;
case MV64x60_TYPE_GT64260B:
s = "gt64260b";
break;
case MV64x60_TYPE_MV64360:
s = "mv64360";
break;
case MV64x60_TYPE_MV64460:
s = "mv64460";
break;
default:
s = "Unknown";
}
seq_printf(m, "bridge type\t: %s\n", s);
seq_printf(m, "bridge rev\t: 0x%x\n", bh.rev);
#if defined(CONFIG_NOT_COHERENT_CACHE)
seq_printf(m, "coherency\t: %s\n", "off");
#else
seq_printf(m, "coherency\t: %s\n", "on");
#endif
return 0;
}
static void __init
cpci690_calibrate_decr(void)
{
ulong freq;
freq = cpci690_get_bus_freq() / 4;
printk(KERN_INFO "time_init: decrementer frequency = %lu.%.6lu MHz\n",
freq/1000000, freq%1000000);
tb_ticks_per_jiffy = freq / HZ;
tb_to_us = mulhwu_scale_factor(freq, 1000000);
}
#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB_MPSC)
static void __init
cpci690_map_io(void)
{
io_block_mapping(CONFIG_MV64X60_NEW_BASE, CONFIG_MV64X60_NEW_BASE,
128 * 1024, _PAGE_IO);
}
#endif
void __init
platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
parse_bootinfo(find_bootinfo());
#ifdef CONFIG_BLK_DEV_INITRD
/* take care of initrd if we have one */
if (r4) {
initrd_start = r4 + KERNELBASE;
initrd_end = r5 + KERNELBASE;
}
#endif /* CONFIG_BLK_DEV_INITRD */
isa_mem_base = 0;
ppc_md.setup_arch = cpci690_setup_arch;
ppc_md.show_cpuinfo = cpci690_show_cpuinfo;
ppc_md.init_IRQ = gt64260_init_irq;
ppc_md.get_irq = gt64260_get_irq;
ppc_md.restart = cpci690_restart;
ppc_md.power_off = cpci690_power_off;
ppc_md.halt = cpci690_halt;
ppc_md.time_init = todc_time_init;
ppc_md.set_rtc_time = todc_set_rtc_time;
ppc_md.get_rtc_time = todc_get_rtc_time;
ppc_md.nvram_read_val = todc_direct_read_val;
ppc_md.nvram_write_val = todc_direct_write_val;
ppc_md.calibrate_decr = cpci690_calibrate_decr;
#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB_MPSC)
ppc_md.setup_io_mappings = cpci690_map_io;
#ifdef CONFIG_SERIAL_TEXT_DEBUG
ppc_md.progress = mv64x60_mpsc_progress;
mv64x60_progress_init(CONFIG_MV64X60_NEW_BASE);
#endif /* CONFIG_SERIAL_TEXT_DEBUG */
#endif /* defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB_MPSC) */
#if defined(CONFIG_SERIAL_MPSC)
platform_notify = cpci690_platform_notify;
#endif
}
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