+++ /dev/null
---- a/drivers/ata/Kconfig
-+++ b/drivers/ata/Kconfig
-@@ -916,5 +916,12 @@ config PATA_LEGACY
-
- If unsure, say N.
-
-+config PATA_RB_PPC
-+ tristate "MikroTik RB600 PATA support"
-+ depends on RB_PPC
-+ help
-+ This option enables support for PATA devices on MikroTik RouterBOARD
-+ 600 series boards.
-+
- endif # ATA_SFF
- endif # ATA
---- a/drivers/ata/Makefile
-+++ b/drivers/ata/Makefile
-@@ -91,6 +91,7 @@ obj-$(CONFIG_PATA_PALMLD) += pata_palmld
- obj-$(CONFIG_PATA_PLATFORM) += pata_platform.o
- obj-$(CONFIG_PATA_OF_PLATFORM) += pata_of_platform.o
- obj-$(CONFIG_PATA_RB532) += pata_rb532_cf.o
-+obj-$(CONFIG_PATA_RB_PPC) += pata_rbppc_cf.o
- obj-$(CONFIG_PATA_RZ1000) += pata_rz1000.o
- obj-$(CONFIG_PATA_SAMSUNG_CF) += pata_samsung_cf.o
-
---- /dev/null
-+++ b/drivers/ata/pata_rbppc_cf.c
-@@ -0,0 +1,699 @@
-+/*
-+ * Copyright (C) 2008-2009 Noah Fontes <nfontes@transtruct.org>
-+ * Copyright (C) Mikrotik 2007
-+ *
-+ * This program is free software; you can redistribute it and/or modify it
-+ * under the terms of the GNU General Public License as published by the
-+ * Free Software Foundation; either version 2 of the License, or (at your
-+ * option) any later version.
-+ */
-+
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/init.h>
-+#include <scsi/scsi_host.h>
-+#include <linux/libata.h>
-+#include <linux/of_platform.h>
-+#include <linux/ata_platform.h>
-+#include <linux/slab.h>
-+
-+#define DEBUG_UPM 0
-+
-+#define DRV_NAME "pata_rbppc_cf"
-+#define DRV_VERSION "0.0.2"
-+
-+#define DEV2SEL_OFFSET 0x00100000
-+
-+#define IMMR_LBCFG_OFFSET 0x00005000
-+#define IMMR_LBCFG_SIZE 0x00001000
-+
-+#define LOCAL_BUS_MCMR 0x00000078
-+#define MxMR_OP_MASK 0x30000000
-+#define MxMR_OP_NORMAL 0x00000000
-+#define MxMR_OP_WRITE 0x10000000
-+#define MxMR_OP_READ 0x20000000
-+#define MxMR_OP_RUN 0x30000000
-+#define MxMR_LUPWAIT_LOW 0x08000000
-+#define MxMR_LUPWAIT_HIGH 0x00000000
-+#define MxMR_LUPWAIT_ENABLE 0x00040000
-+#define MxMR_RLF_MASK 0x0003c000
-+#define MxMR_RLF_SHIFT 14
-+#define MxMR_WLF_MASK 0x00003c00
-+#define MxMR_WLF_SHIFT 10
-+#define MxMR_MAD_MASK 0x0000003f
-+#define LOCAL_BUS_MDR 0x00000088
-+#define LOCAL_BUS_LCRR 0x000000D4
-+#define LCRR_CLKDIV_MASK 0x0000000f
-+
-+#define LOOP_SIZE 4
-+
-+#define UPM_READ_SINGLE_OFFSET 0x00
-+#define UPM_WRITE_SINGLE_OFFSET 0x18
-+#define UPM_DATA_SIZE 0x40
-+
-+#define LBT_CPUIN_MIN 0
-+#define LBT_CPUOUT_MIN 1
-+#define LBT_CPUOUT_MAX 2
-+#define LBT_EXTDEL_MIN 3
-+#define LBT_EXTDEL_MAX 4
-+#define LBT_SIZE 5
-+
-+/* UPM machine configuration bits */
-+#define N_BASE 0x00f00000
-+#define N_CS 0xf0000000
-+#define N_CS_H1 0xc0000000
-+#define N_CS_H2 0x30000000
-+#define N_WE 0x0f000000
-+#define N_WE_H1 0x0c000000
-+#define N_WE_H2 0x03000000
-+#define N_OE 0x00030000
-+#define N_OE_H1 0x00020000
-+#define N_OE_H2 0x00010000
-+#define WAEN 0x00001000
-+#define REDO_2 0x00000100
-+#define REDO_3 0x00000200
-+#define REDO_4 0x00000300
-+#define LOOP 0x00000080
-+#define NA 0x00000008
-+#define UTA 0x00000004
-+#define LAST 0x00000001
-+
-+#define REDO_VAL(mult) (REDO_2 * ((mult) - 1))
-+#define REDO_MAX_MULT 4
-+
-+#define READ_BASE (N_BASE | N_WE)
-+#define WRITE_BASE (N_BASE | N_OE)
-+#define EMPTY (N_BASE | N_CS | N_OE | N_WE | LAST)
-+
-+#define EOF_UPM_SETTINGS 0
-+#define ANOTHER_TIMING 1
-+
-+#define OA_CPUIN_MIN 0x01
-+#define OA_CPUOUT_MAX 0x02
-+#define OD_CPUOUT_MIN 0x04
-+#define OA_CPUOUT_DELTA 0x06
-+#define OA_EXTDEL_MAX 0x08
-+#define OD_EXTDEL_MIN 0x10
-+#define OA_EXTDEL_DELTA 0x18
-+#define O_MIN_CYCLE_TIME 0x20
-+#define O_MINUS_PREV 0x40
-+#define O_HALF_CYCLE 0x80
-+
-+extern void __iomem *localbus_map(unsigned long addr, unsigned int len);
-+extern void localbus_unmap(void __iomem *addr);
-+
-+struct rbppc_cf_info {
-+ unsigned lbcfg_addr;
-+ unsigned clk_time_ps;
-+ int cur_mode;
-+ u32 lb_timings[LBT_SIZE];
-+};
-+static struct rbppc_cf_info *rbinfo = NULL;
-+
-+struct upm_setting {
-+ unsigned value;
-+ unsigned ns[7];
-+ unsigned clk_minus;
-+ unsigned group_size;
-+ unsigned options;
-+};
-+
-+static const struct upm_setting cfUpmReadSingle[] = {
-+ { READ_BASE | N_OE,
-+ /* t1 - ADDR setup time */
-+ { 70, 50, 30, 30, 25, 15, 10 }, 0, 0, (OA_CPUOUT_DELTA |
-+ OA_EXTDEL_MAX) },
-+ { READ_BASE | N_OE_H1,
-+ { 0, 0, 0, 0, 0, 0, 0 }, 0, 0, O_HALF_CYCLE },
-+ { READ_BASE,
-+ /* t2 - OE0 time */
-+ { 290, 290, 290, 80, 70, 65, 55 }, 0, 2, (OA_CPUOUT_MAX |
-+ OA_CPUIN_MIN) },
-+ { READ_BASE | WAEN,
-+ { 1, 1, 1, 1, 1, 0, 0 }, 0, 0, 0 },
-+ { READ_BASE | UTA,
-+ { 1, 1, 1, 1, 1, 1, 1 }, 0, 0, 0 },
-+ { READ_BASE | N_OE,
-+ /* t9 - ADDR hold time */
-+ { 20, 15, 10, 10, 10, 10, 10 }, 0, 0, (OA_CPUOUT_DELTA |
-+ OD_EXTDEL_MIN) },
-+ { READ_BASE | N_OE | N_CS_H2,
-+ { 0, 0, 0, 0, 0, 0, 0 }, 0, 0, O_HALF_CYCLE },
-+ { READ_BASE | N_OE | N_CS,
-+ /* t6Z -IORD data tristate */
-+ { 30, 30, 30, 30, 30, 20, 20 }, 1, 1, O_MINUS_PREV },
-+ { ANOTHER_TIMING,
-+ /* t2i -IORD recovery time */
-+ { 0, 0, 0, 70, 25, 25, 20 }, 2, 0, 0 },
-+ { ANOTHER_TIMING,
-+ /* CS 0 -> 1 MAX */
-+ { 0, 0, 0, 0, 0, 0, 0 }, 1, 0, (OA_CPUOUT_DELTA |
-+ OA_EXTDEL_MAX) },
-+ { READ_BASE | N_OE | N_CS | LAST,
-+ { 1, 1, 1, 1, 1, 1, 1 }, 0, 0, 0 },
-+ { EOF_UPM_SETTINGS,
-+ /* min total cycle time - includes turnaround and ALE cycle */
-+ { 600, 383, 240, 180, 120, 100, 80 }, 2, 0, O_MIN_CYCLE_TIME },
-+};
-+
-+static const struct upm_setting cfUpmWriteSingle[] = {
-+ { WRITE_BASE | N_WE,
-+ /* t1 - ADDR setup time */
-+ { 70, 50, 30, 30, 25, 15, 10 }, 0, 0, (OA_CPUOUT_DELTA |
-+ OA_EXTDEL_MAX) },
-+ { WRITE_BASE | N_WE_H1,
-+ { 0, 0, 0, 0, 0, 0, 0 }, 0, 0, O_HALF_CYCLE },
-+ { WRITE_BASE,
-+ /* t2 - WE0 time */
-+ { 290, 290, 290, 80, 70, 65, 55 }, 0, 1, OA_CPUOUT_DELTA },
-+ { WRITE_BASE | WAEN,
-+ { 1, 1, 1, 1, 1, 0, 0 }, 0, 0, 0 },
-+ { WRITE_BASE | N_WE,
-+ /* t9 - ADDR hold time */
-+ { 20, 15, 10, 10, 10, 10, 10 }, 0, 0, (OA_CPUOUT_DELTA |
-+ OD_EXTDEL_MIN) },
-+ { WRITE_BASE | N_WE | N_CS_H2,
-+ { 0, 0, 0, 0, 0, 0, 0 }, 0, 0, O_HALF_CYCLE },
-+ { WRITE_BASE | N_WE | N_CS,
-+ /* t4 - DATA hold time */
-+ { 30, 20, 15, 10, 10, 10, 10 }, 0, 1, O_MINUS_PREV },
-+ { ANOTHER_TIMING,
-+ /* t2i -IOWR recovery time */
-+ { 0, 0, 0, 70, 25, 25, 20 }, 1, 0, 0 },
-+ { ANOTHER_TIMING,
-+ /* CS 0 -> 1 MAX */
-+ { 0, 0, 0, 0, 0, 0, 0 }, 0, 0, (OA_CPUOUT_DELTA |
-+ OA_EXTDEL_MAX) },
-+ { WRITE_BASE | N_WE | N_CS | UTA | LAST,
-+ { 1, 1, 1, 1, 1, 1, 1 }, 0, 0, 0 },
-+ /* min total cycle time - includes ALE cycle */
-+ { EOF_UPM_SETTINGS,
-+ { 600, 383, 240, 180, 120, 100, 80 }, 1, 0, O_MIN_CYCLE_TIME },
-+};
-+
-+static u8 rbppc_cf_check_status(struct ata_port *ap) {
-+ u8 val = ioread8(ap->ioaddr.status_addr);
-+ if (val == 0xF9)
-+ val = 0x7F;
-+ return val;
-+}
-+
-+static u8 rbppc_cf_check_altstatus(struct ata_port *ap) {
-+ u8 val = ioread8(ap->ioaddr.altstatus_addr);
-+ if (val == 0xF9)
-+ val = 0x7F;
-+ return val;
-+}
-+
-+static void rbppc_cf_dummy_noret(struct ata_port *ap) { }
-+static int rbppc_cf_dummy_ret0(struct ata_port *ap) { return 0; }
-+
-+static int ps2clk(int ps, unsigned clk_time_ps) {
-+ int psMaxOver;
-+ if (ps <= 0) return 0;
-+
-+ /* round down if <= 2% over clk border, but no more than 1/4 clk cycle */
-+ psMaxOver = ps * 2 / 100;
-+ if (4 * psMaxOver > clk_time_ps) {
-+ psMaxOver = clk_time_ps / 4;
-+ }
-+ return (ps + clk_time_ps - 1 - psMaxOver) / clk_time_ps;
-+}
-+
-+static int upm_gen_ps_table(const struct upm_setting *upm,
-+ int mode, struct rbppc_cf_info *info,
-+ int *psFinal) {
-+ int uidx;
-+ int lastUpmValIdx = 0;
-+ int group_start_idx = -1;
-+ int group_left_num = -1;
-+ int clk_time_ps = info->clk_time_ps;
-+
-+ for (uidx = 0; upm[uidx].value != EOF_UPM_SETTINGS; ++uidx) {
-+ const struct upm_setting *us = upm + uidx;
-+ unsigned opt = us->options;
-+ int ps = us->ns[mode] * 1000 - us->clk_minus * clk_time_ps;
-+
-+ if (opt & OA_CPUIN_MIN) ps += info->lb_timings[LBT_CPUIN_MIN];
-+ if (opt & OD_CPUOUT_MIN) ps -= info->lb_timings[LBT_CPUOUT_MIN];
-+ if (opt & OA_CPUOUT_MAX) ps += info->lb_timings[LBT_CPUOUT_MAX];
-+ if (opt & OD_EXTDEL_MIN) ps -= info->lb_timings[LBT_EXTDEL_MIN];
-+ if (opt & OA_EXTDEL_MAX) ps += info->lb_timings[LBT_EXTDEL_MAX];
-+
-+ if (us->value == ANOTHER_TIMING) {
-+ /* use longest timing from alternatives */
-+ if (psFinal[lastUpmValIdx] < ps) {
-+ psFinal[lastUpmValIdx] = ps;
-+ }
-+ ps = 0;
-+ }
-+ else {
-+ if (us->group_size) {
-+ group_start_idx = uidx;
-+ group_left_num = us->group_size;
-+ }
-+ else if (group_left_num > 0) {
-+ /* group time is divided on all group members */
-+ int clk = ps2clk(ps, clk_time_ps);
-+ psFinal[group_start_idx] -= clk * clk_time_ps;
-+ --group_left_num;
-+ }
-+ if ((opt & O_MINUS_PREV) && lastUpmValIdx > 0) {
-+ int clk = ps2clk(psFinal[lastUpmValIdx],
-+ clk_time_ps);
-+ ps -= clk * clk_time_ps;
-+ }
-+ lastUpmValIdx = uidx;
-+ }
-+ psFinal[uidx] = ps;
-+ }
-+ return uidx;
-+}
-+
-+static int free_half(int ps, int clk, int clk_time_ps) {
-+ if (clk < 2) return 0;
-+ return (clk * clk_time_ps - ps) * 2 >= clk_time_ps;
-+}
-+
-+static void upm_gen_clk_table(const struct upm_setting *upm,
-+ int mode, int clk_time_ps,
-+ int max_uidx, const int *psFinal, int *clkFinal) {
-+ int clk_cycle_time;
-+ int clk_total;
-+ int uidx;
-+
-+ /* convert picoseconds to clocks */
-+ clk_total = 0;
-+ for (uidx = 0; uidx < max_uidx; ++uidx) {
-+ int clk = ps2clk(psFinal[uidx], clk_time_ps);
-+ clkFinal[uidx] = clk;
-+ clk_total += clk;
-+ }
-+
-+ /* check possibility of half cycle usage */
-+ for (uidx = 1; uidx < max_uidx - 1; ++uidx) {
-+ if ((upm[uidx].options & O_HALF_CYCLE) &&
-+ free_half(psFinal[uidx - 1], clkFinal[uidx - 1],
-+ clk_time_ps) &&
-+ free_half(psFinal[uidx + 1], clkFinal[uidx + 1],
-+ clk_time_ps)) {
-+ ++clkFinal[uidx];
-+ --clkFinal[uidx - 1];
-+ --clkFinal[uidx + 1];
-+ }
-+ }
-+
-+ if ((upm[max_uidx].options & O_MIN_CYCLE_TIME) == 0) return;
-+
-+ /* check cycle time, adjust timings if needed */
-+ clk_cycle_time = (ps2clk(upm[max_uidx].ns[mode] * 1000, clk_time_ps) -
-+ upm[max_uidx].clk_minus);
-+ uidx = 0;
-+ while (clk_total < clk_cycle_time) {
-+ /* extend all timings in round-robin to match cycle time */
-+ if (clkFinal[uidx]) {
-+#if DEBUG_UPM
-+ printk(KERN_INFO "extending %u by 1 clk\n", uidx);
-+#endif
-+ ++clkFinal[uidx];
-+ ++clk_total;
-+ }
-+ ++uidx;
-+ if (uidx == max_uidx) uidx = 0;
-+ }
-+}
-+
-+static void add_data_val(unsigned val, int *clkLeft, int maxClk,
-+ unsigned *data, int *dataIdx) {
-+ if (*clkLeft == 0) return;
-+
-+ if (maxClk == 0 && *clkLeft >= LOOP_SIZE * 2) {
-+ int times;
-+ int times1;
-+ int times2;
-+
-+ times = *clkLeft / LOOP_SIZE;
-+ if (times > REDO_MAX_MULT * 2) times = REDO_MAX_MULT * 2;
-+ times1 = times / 2;
-+ times2 = times - times1;
-+
-+ val |= LOOP;
-+ data[*dataIdx] = val | REDO_VAL(times1);
-+ ++(*dataIdx);
-+ data[*dataIdx] = val | REDO_VAL(times2);
-+ ++(*dataIdx);
-+
-+ *clkLeft -= times * LOOP_SIZE;
-+ return;
-+ }
-+
-+ if (maxClk < 1 || maxClk > REDO_MAX_MULT) maxClk = REDO_MAX_MULT;
-+ if (*clkLeft < maxClk) maxClk = *clkLeft;
-+
-+ *clkLeft -= maxClk;
-+ val |= REDO_VAL(maxClk);
-+
-+ data[*dataIdx] = val;
-+ ++(*dataIdx);
-+}
-+
-+static int upm_gen_final_data(const struct upm_setting *upm,
-+ int max_uidx, int *clkFinal, unsigned *data) {
-+ int dataIdx;
-+ int uidx;
-+
-+ dataIdx = 0;
-+ for (uidx = 0; uidx < max_uidx; ++uidx) {
-+ int clk = clkFinal[uidx];
-+ while (clk > 0) {
-+ add_data_val(upm[uidx].value, &clk, 0,
-+ data, &dataIdx);
-+ }
-+ }
-+ return dataIdx;
-+}
-+
-+static int conv_upm_table(const struct upm_setting *upm,
-+ int mode, struct rbppc_cf_info *info,
-+ unsigned *data) {
-+#if DEBUG_UPM
-+ int uidx;
-+#endif
-+ int psFinal[32];
-+ int clkFinal[32];
-+ int max_uidx;
-+ int data_len;
-+
-+ max_uidx = upm_gen_ps_table(upm, mode, info, psFinal);
-+
-+ upm_gen_clk_table(upm, mode, info->clk_time_ps, max_uidx,
-+ psFinal, clkFinal);
-+
-+#if DEBUG_UPM
-+ /* dump out debug info */
-+ for (uidx = 0; uidx < max_uidx; ++uidx) {
-+ if (clkFinal[uidx]) {
-+ printk(KERN_INFO "idx %d val %08x clk %d ps %d\n",
-+ uidx, upm[uidx].value,
-+ clkFinal[uidx], psFinal[uidx]);
-+ }
-+ }
-+#endif
-+
-+ data_len = upm_gen_final_data(upm, max_uidx, clkFinal, data);
-+
-+#if DEBUG_UPM
-+ for (uidx = 0; uidx < data_len; ++uidx) {
-+ printk(KERN_INFO "cf UPM x result: idx %d val %08x\n",
-+ uidx, data[uidx]);
-+ }
-+#endif
-+ return 0;
-+}
-+
-+static int gen_upm_data(int mode, struct rbppc_cf_info *info, unsigned *data) {
-+ int i;
-+
-+ for (i = 0; i < UPM_DATA_SIZE; ++i) {
-+ data[i] = EMPTY;
-+ }
-+
-+ if (conv_upm_table(cfUpmReadSingle, mode, info, data + UPM_READ_SINGLE_OFFSET)) {
-+ return -1;
-+ }
-+ if (conv_upm_table(cfUpmWriteSingle, mode, info, data + UPM_WRITE_SINGLE_OFFSET)) {
-+ return -1;
-+ }
-+ return 0;
-+}
-+
-+static void rbppc_cf_program_upm(void *upmMemAddr, volatile void *lbcfg_mxmr, volatile void *lbcfg_mdr, const unsigned *upmData, unsigned offset, unsigned len) {
-+ unsigned i;
-+ unsigned mxmr;
-+
-+ mxmr = in_be32(lbcfg_mxmr);
-+ mxmr &= ~(MxMR_OP_MASK | MxMR_MAD_MASK);
-+ mxmr |= (MxMR_OP_WRITE | offset);
-+ out_be32(lbcfg_mxmr, mxmr);
-+ in_be32(lbcfg_mxmr); /* flush MxMR write */
-+
-+ for (i = 0; i < len; ++i) {
-+ int to;
-+ unsigned data = upmData[i + offset];
-+ out_be32(lbcfg_mdr, data);
-+ in_be32(lbcfg_mdr); /* flush MDR write */
-+
-+ iowrite8(1, upmMemAddr); /* dummy write to any CF addr */
-+
-+ /* wait for dummy write to complete */
-+ for (to = 10000; to >= 0; --to) {
-+ mxmr = in_be32(lbcfg_mxmr);
-+ if (((mxmr ^ (i + 1)) & MxMR_MAD_MASK) == 0) {
-+ break;
-+ }
-+ if (to == 0) {
-+ printk(KERN_ERR "rbppc_cf_program_upm: UPMx program error at 0x%x: Timeout\n", i);
-+ }
-+ }
-+ }
-+ mxmr &= ~(MxMR_OP_MASK | MxMR_RLF_MASK | MxMR_WLF_MASK);
-+ mxmr |= (MxMR_OP_NORMAL | (LOOP_SIZE << MxMR_RLF_SHIFT) | (LOOP_SIZE << MxMR_WLF_SHIFT));
-+ out_be32(lbcfg_mxmr, mxmr);
-+}
-+
-+static int rbppc_cf_update_piomode(struct ata_port *ap, int mode) {
-+ struct rbppc_cf_info *info = (struct rbppc_cf_info *)ap->host->private_data;
-+ void *lbcfgBase;
-+ unsigned upmData[UPM_DATA_SIZE];
-+
-+ if (gen_upm_data(mode, info, upmData)) {
-+ return -1;
-+ }
-+
-+ lbcfgBase = ioremap_nocache(info->lbcfg_addr, IMMR_LBCFG_SIZE);
-+
-+ rbppc_cf_program_upm(ap->ioaddr.cmd_addr, ((char *)lbcfgBase) + LOCAL_BUS_MCMR, ((char *)lbcfgBase) + LOCAL_BUS_MDR, upmData, 0, UPM_DATA_SIZE);
-+ iounmap(lbcfgBase);
-+ return 0;
-+}
-+
-+static void rbppc_cf_set_piomode(struct ata_port *ap, struct ata_device *adev)
-+{
-+ struct rbppc_cf_info *info = (struct rbppc_cf_info *)ap->host->private_data;
-+ int mode = adev->pio_mode - XFER_PIO_0;
-+
-+ DPRINTK("rbppc_cf_set_piomode: PIO %d\n", mode);
-+ if (mode < 0) mode = 0;
-+ if (mode > 6) mode = 6;
-+
-+ if (info->cur_mode < 0 || info->cur_mode > mode) {
-+ if (rbppc_cf_update_piomode(ap, mode) == 0) {
-+ printk(KERN_INFO "rbppc_cf_set_piomode: PIO mode changed to %d\n", mode);
-+ info->cur_mode = mode;
-+ }
-+ }
-+}
-+
-+static struct scsi_host_template rbppc_cf_sht = {
-+ ATA_BASE_SHT(DRV_NAME),
-+};
-+
-+static struct ata_port_operations rbppc_cf_port_ops = {
-+ .inherits = &ata_bmdma_port_ops,
-+
-+ .sff_check_status = rbppc_cf_check_status,
-+ .sff_check_altstatus = rbppc_cf_check_altstatus,
-+
-+ .set_piomode = rbppc_cf_set_piomode,
-+
-+ .port_start = rbppc_cf_dummy_ret0,
-+
-+ .sff_irq_clear = rbppc_cf_dummy_noret,
-+};
-+
-+static int rbppc_cf_init_info(struct platform_device *pdev, struct rbppc_cf_info *info) {
-+ struct device_node *np;
-+ struct resource res;
-+ const u32 *u32ptr;
-+ void *lbcfgBase;
-+ void *lbcfg_lcrr;
-+ unsigned lbc_clk_khz;
-+ unsigned lbc_extra_divider = 1;
-+ unsigned ccb_freq_hz;
-+ unsigned lb_div;
-+
-+ u32ptr = of_get_property(pdev->dev.of_node, "lbc_extra_divider", NULL);
-+ if (u32ptr && *u32ptr) {
-+ lbc_extra_divider = *u32ptr;
-+#if DEBUG_UPM
-+ printk(KERN_INFO "rbppc_cf_init_info: LBC extra divider %u\n",
-+ lbc_extra_divider);
-+#endif
-+ }
-+
-+ np = of_find_node_by_type(NULL, "serial");
-+ if (!np) {
-+ printk(KERN_ERR "rbppc_cf_init_info: No serial node found\n");
-+ return -1;
-+ }
-+ u32ptr = of_get_property(np, "clock-frequency", NULL);
-+ if (u32ptr == 0 || *u32ptr == 0) {
-+ printk(KERN_ERR "rbppc_cf_init_info: Serial does not have clock-frequency\n");
-+ of_node_put(np);
-+ return -1;
-+ }
-+ ccb_freq_hz = *u32ptr;
-+ of_node_put(np);
-+
-+ np = of_find_node_by_type(NULL, "soc");
-+ if (!np) {
-+ printk(KERN_ERR "rbppc_cf_init_info: No soc node found\n");
-+ return -1;
-+ }
-+ if (of_address_to_resource(np, 0, &res)) {
-+ printk(KERN_ERR "rbppc_cf_init_info: soc does not have resource\n");
-+ of_node_put(np);
-+ return -1;
-+ }
-+ info->lbcfg_addr = res.start + IMMR_LBCFG_OFFSET;
-+ of_node_put(np);
-+
-+ lbcfgBase = ioremap_nocache(info->lbcfg_addr, IMMR_LBCFG_SIZE);
-+ lbcfg_lcrr = ((char*)lbcfgBase) + LOCAL_BUS_LCRR;
-+ lb_div = (in_be32(lbcfg_lcrr) & LCRR_CLKDIV_MASK) * lbc_extra_divider;
-+ iounmap(lbcfgBase);
-+
-+ lbc_clk_khz = ccb_freq_hz / (1000 * lb_div);
-+ info->clk_time_ps = 1000000000 / lbc_clk_khz;
-+ printk(KERN_INFO "rbppc_cf_init_info: Using Local-Bus clock %u kHz %u ps\n",
-+ lbc_clk_khz, info->clk_time_ps);
-+
-+ u32ptr = of_get_property(pdev->dev.of_node, "lb-timings", NULL);
-+ if (u32ptr) {
-+ memcpy(info->lb_timings, u32ptr, LBT_SIZE * sizeof(*u32ptr));
-+#if DEBUG_UPM
-+ printk(KERN_INFO "rbppc_cf_init_info: Got LB timings <%u %u %u %u %u>\n",
-+ u32ptr[0], u32ptr[1], u32ptr[2], u32ptr[3], u32ptr[4]);
-+#endif
-+ }
-+ info->cur_mode = -1;
-+ return 0;
-+}
-+
-+static int rbppc_cf_probe(struct platform_device *pdev)
-+{
-+ struct ata_host *host;
-+ struct ata_port *ap;
-+ struct rbppc_cf_info *info = NULL;
-+ struct resource res;
-+ void *baddr;
-+ const u32 *u32ptr;
-+ int irq_level = 0;
-+ int err = -ENOMEM;
-+
-+ printk(KERN_INFO "rbppc_cf_probe: MikroTik RouterBOARD 600 series Compact Flash PATA driver, version " DRV_VERSION "\n");
-+
-+ if (rbinfo == NULL) {
-+ info = kmalloc(sizeof(*info), GFP_KERNEL);
-+ if (info == NULL) {
-+ printk(KERN_ERR "rbppc_cf_probe: Out of memory\n");
-+ goto err_info;
-+ }
-+ memset(info, 0, sizeof(*info));
-+
-+ if (rbppc_cf_init_info(pdev, info)) {
-+ goto err_info;
-+ }
-+ rbinfo = info;
-+ }
-+
-+ u32ptr = of_get_property(pdev->dev.of_node, "interrupt-at-level", NULL);
-+ if (u32ptr) {
-+ irq_level = *u32ptr;
-+ printk(KERN_INFO "rbppc_cf_probe: IRQ level %u\n", irq_level);
-+ }
-+
-+ if (of_address_to_resource(pdev->dev.of_node, 0, &res)) {
-+ printk(KERN_ERR "rbppc_cf_probe: No reg property found\n");
-+ goto err_info;
-+ }
-+
-+ host = ata_host_alloc(&pdev->dev, 1);
-+ if (!host)
-+ goto err_info;
-+
-+ baddr = localbus_map(res.start, res.end - res.start + 1);
-+ host->iomap = baddr;
-+ host->private_data = rbinfo;
-+
-+ ap = host->ports[0];
-+ ap->ops = &rbppc_cf_port_ops;
-+ ap->pio_mask = 0x7F; /* PIO modes 0-6 */
-+ ap->mwdma_mask = 0;
-+
-+ ap->ioaddr.cmd_addr = baddr;
-+ ata_sff_std_ports(&ap->ioaddr);
-+ ap->ioaddr.ctl_addr = ap->ioaddr.cmd_addr + 14;
-+ ap->ioaddr.altstatus_addr = ap->ioaddr.ctl_addr;
-+ ap->ioaddr.bmdma_addr = 0;
-+
-+ err = ata_host_activate(
-+ host,
-+ irq_of_parse_and_map(pdev->dev.of_node, 0), ata_sff_interrupt,
-+ irq_level ? IRQF_TRIGGER_HIGH : IRQF_TRIGGER_LOW,
-+ &rbppc_cf_sht);
-+ if (!err) return 0;
-+
-+ localbus_unmap(baddr);
-+err_info:
-+ if (info) {
-+ kfree(info);
-+ rbinfo = NULL;
-+ }
-+ return err;
-+}
-+
-+static int rbppc_cf_remove(struct platform_device *pdev)
-+{
-+ struct device *dev = &pdev->dev;
-+ struct ata_host *host = dev_get_drvdata(dev);
-+
-+ if (host == NULL) return -1;
-+
-+ ata_host_detach(host);
-+ return 0;
-+}
-+
-+static struct of_device_id rbppc_cf_ids[] = {
-+ { .name = "cf", },
-+ { },
-+};
-+
-+static struct platform_driver rbppc_cf_driver = {
-+ .probe = rbppc_cf_probe,
-+ .remove = rbppc_cf_remove,
-+ .driver = {
-+ .name = "rbppc-cf",
-+ .owner = THIS_MODULE,
-+ .of_match_table = rbppc_cf_ids,
-+ },
-+};
-+
-+static int __init rbppc_init(void)
-+{
-+ return platform_driver_register(&rbppc_cf_driver);
-+}
-+
-+static void __exit rbppc_exit(void)
-+{
-+ platform_driver_unregister(&rbppc_cf_driver);
-+}
-+
-+MODULE_AUTHOR("Mikrotikls SIA");
-+MODULE_AUTHOR("Noah Fontes");
-+MODULE_DESCRIPTION("MikroTik RouterBOARD 600 series Compact Flash PATA driver");
-+MODULE_LICENSE("GPL");
-+MODULE_VERSION(DRV_VERSION);
-+
-+module_init(rbppc_init);
-+module_exit(rbppc_exit);
projects / openwrt / svn-archive / archive.git / blobdiff