summaryrefslogtreecommitdiff
path: root/target/linux/mpc83xx/patches-3.3/202-ata-add-pata_rbppc_cf-driver.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/mpc83xx/patches-3.3/202-ata-add-pata_rbppc_cf-driver.patch')
-rw-r--r--target/linux/mpc83xx/patches-3.3/202-ata-add-pata_rbppc_cf-driver.patch727
1 files changed, 727 insertions, 0 deletions
diff --git a/target/linux/mpc83xx/patches-3.3/202-ata-add-pata_rbppc_cf-driver.patch b/target/linux/mpc83xx/patches-3.3/202-ata-add-pata_rbppc_cf-driver.patch
new file mode 100644
index 0000000000..2c56b29a69
--- /dev/null
+++ b/target/linux/mpc83xx/patches-3.3/202-ata-add-pata_rbppc_cf-driver.patch
@@ -0,0 +1,727 @@
+--- a/drivers/ata/Kconfig
++++ b/drivers/ata/Kconfig
+@@ -899,5 +899,12 @@ 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
+@@ -89,6 +89,7 @@ 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);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 06:35:01 +0000