[PATCH] ppc32: MPC885ADS, MPC866ADS and MPC8272ADS-specific platform stuff for fs_enet

Added proper ppc_sys identification and fs_platform_info's for MPC 885ADS,
866ADS and 8272ADS, utilizing function assignment to remove/do not use
platform devices which conflict with PD-incompatible drivers.

Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 389 insertions, 0 deletions

diff --git a/arch/ppc/platforms/mpc885ads_setup.c b/arch/ppc/platforms/mpc885ads_setup.c
new file mode 100644
index 000000000000..50a99e5f7c68
--- /dev/null
+++ b/arch/ppc/platforms/mpc885ads_setup.c
@@ -0,0 +1,389 @@
+/*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/config.h>
+#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/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 __init mpc885ads_scc_phy_init(char);
+
+static struct fs_mii_bus_info fec_mii_bus_info = {
+        .method = fsmii_fec,
+        .id = 0,
+};
+
+static struct fs_mii_bus_info scc_mii_bus_info = {
+#ifdef CONFIG_SCC_ENET_8xx_FIXED
+        .method = fsmii_fixed,
+#else
+        .method = fsmii_fec,
+#endif
+
+        .id = 0,
+};
+
+static struct fs_platform_info mpc8xx_fec_pdata[] = {
+        {
+         .rx_ring = 128,
+         .tx_ring = 16,
+         .rx_copybreak = 240,
+
+         .use_napi = 1,
+         .napi_weight = 17,
+
+         .phy_addr = 0,
+         .phy_irq = SIU_IRQ7,
+
+         .bus_info = &fec_mii_bus_info,
+         }, {
+             .rx_ring = 128,
+             .tx_ring = 16,
+             .rx_copybreak = 240,
+
+             .use_napi = 1,
+             .napi_weight = 17,
+
+             .phy_addr = 1,
+             .phy_irq = SIU_IRQ7,
+
+             .bus_info = &fec_mii_bus_info,
+             }
+};
+
+static struct fs_platform_info mpc8xx_scc_pdata = {
+        .rx_ring = 64,
+        .tx_ring = 8,
+        .rx_copybreak = 240,
+
+        .use_napi = 1,
+        .napi_weight = 17,
+
+        .phy_addr = 2,
+#ifdef CONFIG_MPC8xx_SCC_ENET_FIXED
+        .phy_irq = -1,
+#else
+        .phy_irq = SIU_IRQ7,
+#endif
+
+        .bus_info = &scc_mii_bus_info,
+};
+
+void __init board_init(void)
+{
+        volatile 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);
+#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);
+#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);
+#endif
+}
+
+static void setup_fec1_ioports(void)
+{
+        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(void)
+{
+        immap_t *immap = (immap_t *) IMAP_ADDR;
+
+        /* configure FEC2 pins */
+        setbits32(&immap->im_cpm.cp_pepar, 0x0003fffc);
+        setbits32(&immap->im_cpm.cp_pedir, 0x0003fffc);
+        setbits32(&immap->im_cpm.cp_peso, 0x00037800);
+        clrbits32(&immap->im_cpm.cp_peso, 0x000087fc);
+        clrbits32(&immap->im_cpm.cp_cptr, 0x00000080);
+}
+
+static void setup_scc3_ioports(void)
+{
+        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.
+         */
+        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+1, BCSR1_ETHEN);
+        iounmap(bcsr_io);
+}
+
+static void mpc885ads_fixup_enet_pdata(struct platform_device *pdev, int fs_no)
+{
+        struct fs_platform_info *fpi = pdev->dev.platform_data;
+
+        volatile cpm8xx_t *cp;
+        bd_t *bd = (bd_t *) __res;
+        char *e;
+        int i;
+
+        /* Get pointer to Communication Processor */
+        cp = cpmp;
+        switch (fs_no) {
+        case fsid_fec1:
+                fpi = &mpc8xx_fec_pdata[0];
+                fpi->init_ioports = &setup_fec1_ioports;
+                break;
+        case fsid_fec2:
+                fpi = &mpc8xx_fec_pdata[1];
+                fpi->init_ioports = &setup_fec2_ioports;
+                break;
+        case fsid_scc3:
+                fpi = &mpc8xx_scc_pdata;
+                fpi->init_ioports = &setup_scc3_ioports;
+                mpc885ads_scc_phy_init(fpi->phy_addr);
+                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 - pdev->id]++;
+
+}
+
+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);
+}
+
+/* SCC ethernet controller does not have MII management channel. FEC1 MII
+ * channel is used to communicate with the 10Mbit PHY.
+ */
+
+#define MII_ECNTRL_PINMUX        0x4
+#define FEC_ECNTRL_PINMUX        0x00000004
+#define FEC_RCNTRL_MII_MODE        0x00000004
+
+/* Make MII read/write commands.
+ */
+#define mk_mii_write(REG, VAL, PHY_ADDR)    (0x50020000 | (((REG) & 0x1f) << 18) | \
+                ((VAL) & 0xffff) | ((PHY_ADDR) << 23))
+
+static void mpc885ads_scc_phy_init(char phy_addr)
+{
+        volatile immap_t *immap;
+        volatile fec_t *fecp;
+        bd_t *bd;
+
+        bd = (bd_t *) __res;
+        immap = (immap_t *) IMAP_ADDR;  /* pointer to internal registers */
+        fecp = &(immap->im_cpm.cp_fec);
+
+        /* Enable MII pins of the FEC1
+         */
+        setbits16(&immap->im_ioport.iop_pdpar, 0x0080);
+        clrbits16(&immap->im_ioport.iop_pddir, 0x0080);
+        /* Set MII speed to 2.5 MHz
+         */
+        out_be32(&fecp->fec_mii_speed,
+                 ((((bd->bi_intfreq + 4999999) / 2500000) / 2) & 0x3F) << 1);
+
+        /* Enable FEC pin MUX
+         */
+        setbits32(&fecp->fec_ecntrl, MII_ECNTRL_PINMUX);
+        setbits32(&fecp->fec_r_cntrl, FEC_RCNTRL_MII_MODE);
+
+        out_be32(&fecp->fec_mii_data,
+                 mk_mii_write(MII_BMCR, BMCR_ISOLATE, phy_addr));
+        udelay(100);
+        out_be32(&fecp->fec_mii_data,
+                 mk_mii_write(MII_ADVERTISE,
+                              ADVERTISE_10HALF | ADVERTISE_CSMA, phy_addr));
+        udelay(100);
+
+        /* Disable FEC MII settings
+         */
+        clrbits32(&fecp->fec_ecntrl, MII_ECNTRL_PINMUX);
+        clrbits32(&fecp->fec_r_cntrl, FEC_RCNTRL_MII_MODE);
+        out_be32(&fecp->fec_mii_speed, 0);
+}
+
+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 = NULL
+                }
+        };
+
+        platform_notify_map(dev_map,dev);
+
+}
+
+int __init mpc885ads_init(void)
+{
+        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);
+
+#ifdef CONFIG_MPC8xx_SECOND_ETH_SCC3
+        ppc_sys_device_enable(MPC8xx_CPM_SCC1);
+
+#endif
+#ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2
+        ppc_sys_device_enable(MPC8xx_CPM_FEC2);
+#endif
+
+        return 0;
+}
+
+arch_initcall(mpc885ads_init);