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linux/arch/ppc/platforms/mpc885ads_setup.c
Vitaly Bordug d3465c921f POWERPC: overhaul with cpm2_map mechanism 
Incorporating the new way of cpm2 immr access, introduced in the previous
patch, into CPM2 peripheral devices (fs_enet and cpm_uart). Both ppc and
powerpc approved working( real actions taken in powerpc only, ppc just
has a wrapper to keep init stuff consistent).

Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
2006-09-21 22:38:05 +04:00

477 lines
12 KiB
C
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/*arch/ppc/platforms/mpc885ads-setup.c
*
* Platform setup for the Freescale mpc885ads board
*
* Vitaly Bordug <vbordug@ru.mvista.com>
*
* Copyright 2005 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/init.h>
#include <linux/module.h>
#include <linux/param.h>
#include <linux/string.h>
#include <linux/ioport.h>
#include <linux/device.h>
#include <linux/fs_enet_pd.h>
#include <linux/fs_uart_pd.h>
#include <linux/mii.h>
#include <asm/delay.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/page.h>
#include <asm/processor.h>
#include <asm/system.h>
#include <asm/time.h>
#include <asm/ppcboot.h>
#include <asm/8xx_immap.h>
#include <asm/commproc.h>
#include <asm/ppc_sys.h>
extern unsigned char __res[];
static void setup_smc1_ioports(void);
static void setup_smc2_ioports(void);
static struct fs_mii_fec_platform_info mpc8xx_mdio_fec_pdata;
static void setup_fec1_ioports(void);
static void setup_fec2_ioports(void);
static void setup_scc3_ioports(void);
static struct fs_uart_platform_info mpc885_uart_pdata[] = {
[fsid_smc1_uart] = {
.brg = 1,
.fs_no = fsid_smc1_uart,
.init_ioports = setup_smc1_ioports,
.tx_num_fifo = 4,
.tx_buf_size = 32,
.rx_num_fifo = 4,
.rx_buf_size = 32,
},
[fsid_smc2_uart] = {
.brg = 2,
.fs_no = fsid_smc2_uart,
.init_ioports = setup_smc2_ioports,
.tx_num_fifo = 4,
.tx_buf_size = 32,
.rx_num_fifo = 4,
.rx_buf_size = 32,
},
};
static struct fs_platform_info mpc8xx_enet_pdata[] = {
[fsid_fec1] = {
.rx_ring = 128,
.tx_ring = 16,
.rx_copybreak = 240,
.use_napi = 1,
.napi_weight = 17,
.init_ioports = setup_fec1_ioports,
.bus_id = "0:00",
.has_phy = 1,
},
[fsid_fec2] = {
.rx_ring = 128,
.tx_ring = 16,
.rx_copybreak = 240,
.use_napi = 1,
.napi_weight = 17,
.init_ioports = setup_fec2_ioports,
.bus_id = "0:01",
.has_phy = 1,
},
[fsid_scc3] = {
.rx_ring = 64,
.tx_ring = 8,
.rx_copybreak = 240,
.use_napi = 1,
.napi_weight = 17,
.init_ioports = setup_scc3_ioports,
#ifdef CONFIG_FIXED_MII_10_FDX
.bus_id = "fixed@100:1",
#else
.bus_id = "0:02",
#endif
},
};
void __init board_init(void)
{
cpm8xx_t *cp = cpmp;
unsigned int *bcsr_io;
#ifdef CONFIG_FS_ENET
immap_t *immap = (immap_t *) IMAP_ADDR;
#endif
bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
if (bcsr_io == NULL) {
printk(KERN_CRIT "Could not remap BCSR\n");
return;
}
#ifdef CONFIG_SERIAL_CPM_SMC1
cp->cp_simode &= ~(0xe0000000 >> 17); /* brg1 */
clrbits32(bcsr_io, BCSR1_RS232EN_1);
cp->cp_smc[0].smc_smcm |= (SMCM_RX | SMCM_TX);
cp->cp_smc[0].smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
#else
setbits32(bcsr_io,BCSR1_RS232EN_1);
cp->cp_smc[0].smc_smcmr = 0;
cp->cp_smc[0].smc_smce = 0;
#endif
#ifdef CONFIG_SERIAL_CPM_SMC2
cp->cp_simode &= ~(0xe0000000 >> 1);
cp->cp_simode |= (0x20000000 >> 1); /* brg2 */
clrbits32(bcsr_io,BCSR1_RS232EN_2);
cp->cp_smc[1].smc_smcm |= (SMCM_RX | SMCM_TX);
cp->cp_smc[1].smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
#else
setbits32(bcsr_io,BCSR1_RS232EN_2);
cp->cp_smc[1].smc_smcmr = 0;
cp->cp_smc[1].smc_smce = 0;
#endif
iounmap(bcsr_io);
#ifdef CONFIG_FS_ENET
/* use MDC for MII (common) */
setbits16(&immap->im_ioport.iop_pdpar, 0x0080);
clrbits16(&immap->im_ioport.iop_pddir, 0x0080);
bcsr_io = ioremap(BCSR5, sizeof(unsigned long));
clrbits32(bcsr_io,BCSR5_MII1_EN);
clrbits32(bcsr_io,BCSR5_MII1_RST);
#ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2
clrbits32(bcsr_io,BCSR5_MII2_EN);
clrbits32(bcsr_io,BCSR5_MII2_RST);
#endif
iounmap(bcsr_io);
#endif
}
static void setup_fec1_ioports(struct fs_platform_info*)
{
immap_t *immap = (immap_t *) IMAP_ADDR;
/* configure FEC1 pins */
setbits16(&immap->im_ioport.iop_papar, 0xf830);
setbits16(&immap->im_ioport.iop_padir, 0x0830);
clrbits16(&immap->im_ioport.iop_padir, 0xf000);
setbits32(&immap->im_cpm.cp_pbpar, 0x00001001);
clrbits32(&immap->im_cpm.cp_pbdir, 0x00001001);
setbits16(&immap->im_ioport.iop_pcpar, 0x000c);
clrbits16(&immap->im_ioport.iop_pcdir, 0x000c);
setbits32(&immap->im_cpm.cp_pepar, 0x00000003);
setbits32(&immap->im_cpm.cp_pedir, 0x00000003);
clrbits32(&immap->im_cpm.cp_peso, 0x00000003);
clrbits32(&immap->im_cpm.cp_cptr, 0x00000100);
}
static void setup_fec2_ioports(struct fs_platform_info*)
{
immap_t *immap = (immap_t *) IMAP_ADDR;
/* configure FEC2 pins */
setbits32(&immap->im_cpm.cp_pepar, 0x0003fffc);
setbits32(&immap->im_cpm.cp_pedir, 0x0003fffc);
clrbits32(&immap->im_cpm.cp_peso, 0x000087fc);
setbits32(&immap->im_cpm.cp_peso, 0x00037800);
clrbits32(&immap->im_cpm.cp_cptr, 0x00000080);
}
static void setup_scc3_ioports(struct fs_platform_info*)
{
immap_t *immap = (immap_t *) IMAP_ADDR;
unsigned *bcsr_io;
bcsr_io = ioremap(BCSR_ADDR, BCSR_SIZE);
if (bcsr_io == NULL) {
printk(KERN_CRIT "Could not remap BCSR\n");
return;
}
/* Enable the PHY.
*/
clrbits32(bcsr_io+4, BCSR4_ETH10_RST);
udelay(1000);
setbits32(bcsr_io+4, BCSR4_ETH10_RST);
/* Configure port A pins for Txd and Rxd.
*/
setbits16(&immap->im_ioport.iop_papar, PA_ENET_RXD | PA_ENET_TXD);
clrbits16(&immap->im_ioport.iop_padir, PA_ENET_RXD | PA_ENET_TXD);
/* Configure port C pins to enable CLSN and RENA.
*/
clrbits16(&immap->im_ioport.iop_pcpar, PC_ENET_CLSN | PC_ENET_RENA);
clrbits16(&immap->im_ioport.iop_pcdir, PC_ENET_CLSN | PC_ENET_RENA);
setbits16(&immap->im_ioport.iop_pcso, PC_ENET_CLSN | PC_ENET_RENA);
/* Configure port E for TCLK and RCLK.
*/
setbits32(&immap->im_cpm.cp_pepar, PE_ENET_TCLK | PE_ENET_RCLK);
clrbits32(&immap->im_cpm.cp_pepar, PE_ENET_TENA);
clrbits32(&immap->im_cpm.cp_pedir,
PE_ENET_TCLK | PE_ENET_RCLK | PE_ENET_TENA);
clrbits32(&immap->im_cpm.cp_peso, PE_ENET_TCLK | PE_ENET_RCLK);
setbits32(&immap->im_cpm.cp_peso, PE_ENET_TENA);
/* Configure Serial Interface clock routing.
* First, clear all SCC bits to zero, then set the ones we want.
*/
clrbits32(&immap->im_cpm.cp_sicr, SICR_ENET_MASK);
setbits32(&immap->im_cpm.cp_sicr, SICR_ENET_CLKRT);
/* Disable Rx and Tx. SMC1 sshould be stopped if SCC3 eternet are used.
*/
immap->im_cpm.cp_smc[0].smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
/* On the MPC885ADS SCC ethernet PHY is initialized in the full duplex mode
* by H/W setting after reset. SCC ethernet controller support only half duplex.
* This discrepancy of modes causes a lot of carrier lost errors.
*/
/* In the original SCC enet driver the following code is placed at
the end of the initialization */
setbits32(&immap->im_cpm.cp_pepar, PE_ENET_TENA);
clrbits32(&immap->im_cpm.cp_pedir, PE_ENET_TENA);
setbits32(&immap->im_cpm.cp_peso, PE_ENET_TENA);
setbits32(bcsr_io+4, BCSR1_ETHEN);
iounmap(bcsr_io);
}
static int mac_count = 0;
static void mpc885ads_fixup_enet_pdata(struct platform_device *pdev, int fs_no)
{
struct fs_platform_info *fpi;
bd_t *bd = (bd_t *) __res;
char *e;
int i;
if(fs_no > ARRAY_SIZE(mpc8xx_enet_pdata)) {
printk(KERN_ERR"No network-suitable #%d device on bus", fs_no);
return;
}
fpi = &mpc8xx_enet_pdata[fs_no];
switch (fs_no) {
case fsid_fec1:
fpi->init_ioports = &setup_fec1_ioports;
break;
case fsid_fec2:
fpi->init_ioports = &setup_fec2_ioports;
break;
case fsid_scc3:
fpi->init_ioports = &setup_scc3_ioports;
break;
default:
printk(KERN_WARNING "Device %s is not supported!\n", pdev->name);
return;
}
pdev->dev.platform_data = fpi;
fpi->fs_no = fs_no;
e = (unsigned char *)&bd->bi_enetaddr;
for (i = 0; i < 6; i++)
fpi->macaddr[i] = *e++;
fpi->macaddr[5] += mac_count++;
}
static void mpc885ads_fixup_fec_enet_pdata(struct platform_device *pdev,
int idx)
{
/* This is for FEC devices only */
if (!pdev || !pdev->name || (!strstr(pdev->name, "fsl-cpm-fec")))
return;
mpc885ads_fixup_enet_pdata(pdev, fsid_fec1 + pdev->id - 1);
}
static void __init mpc885ads_fixup_scc_enet_pdata(struct platform_device *pdev,
int idx)
{
/* This is for SCC devices only */
if (!pdev || !pdev->name || (!strstr(pdev->name, "fsl-cpm-scc")))
return;
mpc885ads_fixup_enet_pdata(pdev, fsid_scc1 + pdev->id - 1);
}
static void setup_smc1_ioports(struct fs_uart_platform_info*)
{
immap_t *immap = (immap_t *) IMAP_ADDR;
unsigned *bcsr_io;
unsigned int iobits = 0x000000c0;
bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
if (bcsr_io == NULL) {
printk(KERN_CRIT "Could not remap BCSR1\n");
return;
}
clrbits32(bcsr_io,BCSR1_RS232EN_1);
iounmap(bcsr_io);
setbits32(&immap->im_cpm.cp_pbpar, iobits);
clrbits32(&immap->im_cpm.cp_pbdir, iobits);
clrbits16(&immap->im_cpm.cp_pbodr, iobits);
}
static void setup_smc2_ioports(struct fs_uart_platform_info*)
{
immap_t *immap = (immap_t *) IMAP_ADDR;
unsigned *bcsr_io;
unsigned int iobits = 0x00000c00;
bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
if (bcsr_io == NULL) {
printk(KERN_CRIT "Could not remap BCSR1\n");
return;
}
clrbits32(bcsr_io,BCSR1_RS232EN_2);
iounmap(bcsr_io);
#ifndef CONFIG_SERIAL_CPM_ALT_SMC2
setbits32(&immap->im_cpm.cp_pbpar, iobits);
clrbits32(&immap->im_cpm.cp_pbdir, iobits);
clrbits16(&immap->im_cpm.cp_pbodr, iobits);
#else
setbits16(&immap->im_ioport.iop_papar, iobits);
clrbits16(&immap->im_ioport.iop_padir, iobits);
clrbits16(&immap->im_ioport.iop_paodr, iobits);
#endif
}
static void __init mpc885ads_fixup_uart_pdata(struct platform_device *pdev,
int idx)
{
bd_t *bd = (bd_t *) __res;
struct fs_uart_platform_info *pinfo;
int num = ARRAY_SIZE(mpc885_uart_pdata);
int id = fs_uart_id_smc2fsid(idx);
/* no need to alter anything if console */
if ((id <= num) && (!pdev->dev.platform_data)) {
pinfo = &mpc885_uart_pdata[id];
pinfo->uart_clk = bd->bi_intfreq;
pdev->dev.platform_data = pinfo;
}
}
static int mpc885ads_platform_notify(struct device *dev)
{
static const struct platform_notify_dev_map dev_map[] = {
{
.bus_id = "fsl-cpm-fec",
.rtn = mpc885ads_fixup_fec_enet_pdata,
},
{
.bus_id = "fsl-cpm-scc",
.rtn = mpc885ads_fixup_scc_enet_pdata,
},
{
.bus_id = "fsl-cpm-smc:uart",
.rtn = mpc885ads_fixup_uart_pdata
},
{
.bus_id = NULL
}
};
platform_notify_map(dev_map,dev);
return 0;
}
int __init mpc885ads_init(void)
{
struct fs_mii_fec_platform_info* fmpi;
bd_t *bd = (bd_t *) __res;
printk(KERN_NOTICE "mpc885ads: Init\n");
platform_notify = mpc885ads_platform_notify;
ppc_sys_device_initfunc();
ppc_sys_device_disable_all();
ppc_sys_device_enable(MPC8xx_CPM_FEC1);
ppc_sys_device_enable(MPC8xx_MDIO_FEC);
fmpi = ppc_sys_platform_devices[MPC8xx_MDIO_FEC].dev.platform_data =
&mpc8xx_mdio_fec_pdata;
fmpi->mii_speed = ((((bd->bi_intfreq + 4999999) / 2500000) / 2) & 0x3F) << 1;
/* No PHY interrupt line here */
fmpi->irq[0xf] = SIU_IRQ7;
#ifdef CONFIG_MPC8xx_SECOND_ETH_SCC3
ppc_sys_device_enable(MPC8xx_CPM_SCC3);
#endif
#ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2
ppc_sys_device_enable(MPC8xx_CPM_FEC2);
#endif
#ifdef CONFIG_SERIAL_CPM_SMC1
ppc_sys_device_enable(MPC8xx_CPM_SMC1);
ppc_sys_device_setfunc(MPC8xx_CPM_SMC1, PPC_SYS_FUNC_UART);
#endif
#ifdef CONFIG_SERIAL_CPM_SMC2
ppc_sys_device_enable(MPC8xx_CPM_SMC2);
ppc_sys_device_setfunc(MPC8xx_CPM_SMC2, PPC_SYS_FUNC_UART);
#endif
return 0;
}
arch_initcall(mpc885ads_init);
/*
To prevent confusion, console selection is gross:
by 0 assumed SMC1 and by 1 assumed SMC2
*/
struct platform_device* early_uart_get_pdev(int index)
{
bd_t *bd = (bd_t *) __res;
struct fs_uart_platform_info *pinfo;
struct platform_device* pdev = NULL;
if(index) { /*assume SMC2 here*/
pdev = &ppc_sys_platform_devices[MPC8xx_CPM_SMC2];
pinfo = &mpc885_uart_pdata[1];
} else { /*over SMC1*/
pdev = &ppc_sys_platform_devices[MPC8xx_CPM_SMC1];
pinfo = &mpc885_uart_pdata[0];
}
pinfo->uart_clk = bd->bi_intfreq;
pdev->dev.platform_data = pinfo;
ppc_sys_fixup_mem_resource(pdev, IMAP_ADDR);
return NULL;
}
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