[thirdparty/u-boot.git] / arch / powerpc / lib / ide.c

/*
 * (C) Copyright 2000-2011
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

/* Code taken from cmd_ide.c */
#include <common.h>
#include <ata.h>
#include "ide.h"

#ifdef CONFIG_IDE_8xx_DIRECT
#include <mpc8xx.h>
#include <pcmcia.h>
DECLARE_GLOBAL_DATA_PTR;

/* Timings for IDE Interface
 *
 * SETUP / LENGTH / HOLD - cycles valid for 50 MHz clk
 * 70	   165	    30	   PIO-Mode 0, [ns]
 *  4	     9	     2		       [Cycles]
 * 50	   125	    20	   PIO-Mode 1, [ns]
 *  3	     7	     2		       [Cycles]
 * 30	   100	    15	   PIO-Mode 2, [ns]
 *  2	     6	     1		       [Cycles]
 * 30	    80	    10	   PIO-Mode 3, [ns]
 *  2	     5	     1		       [Cycles]
 * 25	    70	    10	   PIO-Mode 4, [ns]
 *  2	     4	     1		       [Cycles]
 */

static const pio_config_t pio_config_ns[IDE_MAX_PIO_MODE+1] = {
    /*  Setup  Length  Hold  */
	{ 70,	165,	30 },		/* PIO-Mode 0, [ns]	*/
	{ 50,	125,	20 },		/* PIO-Mode 1, [ns]	*/
	{ 30,	101,	15 },		/* PIO-Mode 2, [ns]	*/
	{ 30,	 80,	10 },		/* PIO-Mode 3, [ns]	*/
	{ 25,	 70,	10 },		/* PIO-Mode 4, [ns]	*/
};

static pio_config_t pio_config_clk[IDE_MAX_PIO_MODE+1];

#ifndef CONFIG_SYS_PIO_MODE
#define CONFIG_SYS_PIO_MODE	0	/* use a relaxed default */
#endif
static int pio_mode = CONFIG_SYS_PIO_MODE;

/* Make clock cycles and always round up */

#define PCMCIA_MK_CLKS(t, T) (((t) * (T) + 999U) / 1000U)

static void set_pcmcia_timing(int pmode)
{
	volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
	volatile pcmconf8xx_t *pcmp = &(immr->im_pcmcia);
	ulong timings;

	debug("Set timing for PIO Mode %d\n", pmode);

	timings = PCMCIA_SHT(pio_config_clk[pmode].t_hold)
		| PCMCIA_SST(pio_config_clk[pmode].t_setup)
		| PCMCIA_SL(pio_config_clk[pmode].t_length);

	/*
	 * IDE 0
	 */
	pcmp->pcmc_pbr0 = CONFIG_SYS_PCMCIA_PBR0;
#if (CONFIG_SYS_PCMCIA_POR0 != 0)
	pcmp->pcmc_por0 = CONFIG_SYS_PCMCIA_POR0 | timings;
#else
	pcmp->pcmc_por0 = CONFIG_SYS_PCMCIA_POR0;
#endif
	debug("PBR0: %08x  POR0: %08x\n", pcmp->pcmc_pbr0, pcmp->pcmc_por0);

	pcmp->pcmc_pbr1 = CONFIG_SYS_PCMCIA_PBR1;
#if (CONFIG_SYS_PCMCIA_POR1 != 0)
	pcmp->pcmc_por1 = CONFIG_SYS_PCMCIA_POR1 | timings;
#else
	pcmp->pcmc_por1 = CONFIG_SYS_PCMCIA_POR1;
#endif
	debug("PBR1: %08x  POR1: %08x\n", pcmp->pcmc_pbr1, pcmp->pcmc_por1);

	pcmp->pcmc_pbr2 = CONFIG_SYS_PCMCIA_PBR2;
#if (CONFIG_SYS_PCMCIA_POR2 != 0)
	pcmp->pcmc_por2 = CONFIG_SYS_PCMCIA_POR2 | timings;
#else
	pcmp->pcmc_por2 = CONFIG_SYS_PCMCIA_POR2;
#endif
	debug("PBR2: %08x  POR2: %08x\n", pcmp->pcmc_pbr2, pcmp->pcmc_por2);

	pcmp->pcmc_pbr3 = CONFIG_SYS_PCMCIA_PBR3;
#if (CONFIG_SYS_PCMCIA_POR3 != 0)
	pcmp->pcmc_por3 = CONFIG_SYS_PCMCIA_POR3 | timings;
#else
	pcmp->pcmc_por3 = CONFIG_SYS_PCMCIA_POR3;
#endif
	debug("PBR3: %08x  POR3: %08x\n", pcmp->pcmc_pbr3, pcmp->pcmc_por3);

	/*
	 * IDE 1
	 */
	pcmp->pcmc_pbr4 = CONFIG_SYS_PCMCIA_PBR4;
#if (CONFIG_SYS_PCMCIA_POR4 != 0)
	pcmp->pcmc_por4 = CONFIG_SYS_PCMCIA_POR4 | timings;
#else
	pcmp->pcmc_por4 = CONFIG_SYS_PCMCIA_POR4;
#endif
	debug("PBR4: %08x  POR4: %08x\n", pcmp->pcmc_pbr4, pcmp->pcmc_por4);

	pcmp->pcmc_pbr5 = CONFIG_SYS_PCMCIA_PBR5;
#if (CONFIG_SYS_PCMCIA_POR5 != 0)
	pcmp->pcmc_por5 = CONFIG_SYS_PCMCIA_POR5 | timings;
#else
	pcmp->pcmc_por5 = CONFIG_SYS_PCMCIA_POR5;
#endif
	debug("PBR5: %08x  POR5: %08x\n", pcmp->pcmc_pbr5, pcmp->pcmc_por5);

	pcmp->pcmc_pbr6 = CONFIG_SYS_PCMCIA_PBR6;
#if (CONFIG_SYS_PCMCIA_POR6 != 0)
	pcmp->pcmc_por6 = CONFIG_SYS_PCMCIA_POR6 | timings;
#else
	pcmp->pcmc_por6 = CONFIG_SYS_PCMCIA_POR6;
#endif
	debug("PBR6: %08x  POR6: %08x\n", pcmp->pcmc_pbr6, pcmp->pcmc_por6);

	pcmp->pcmc_pbr7 = CONFIG_SYS_PCMCIA_PBR7;
#if (CONFIG_SYS_PCMCIA_POR7 != 0)
	pcmp->pcmc_por7 = CONFIG_SYS_PCMCIA_POR7 | timings;
#else
	pcmp->pcmc_por7 = CONFIG_SYS_PCMCIA_POR7;
#endif
	debug("PBR7: %08x  POR7: %08x\n", pcmp->pcmc_pbr7, pcmp->pcmc_por7);

}

int ide_preinit(void)
{
	int i;
	/* Initialize PIO timing tables */
	for (i = 0; i <= IDE_MAX_PIO_MODE; ++i) {
		pio_config_clk[i].t_setup =
			PCMCIA_MK_CLKS(pio_config_ns[i].t_setup, gd->bus_clk);
		pio_config_clk[i].t_length =
			PCMCIA_MK_CLKS(pio_config_ns[i].t_length, gd->bus_clk);
		pio_config_clk[i].t_hold =
			PCMCIA_MK_CLKS(pio_config_ns[i].t_hold, gd->bus_clk);
		debug("PIO Mode %d: setup=%2d ns/%d clk" "  len=%3d ns/%d clk"
			"  hold=%2d ns/%d clk\n", i, pio_config_ns[i].t_setup,
			pio_config_clk[i].t_setup, pio_config_ns[i].t_length,
			pio_config_clk[i].t_length, pio_config_ns[i].t_hold,
			pio_config_clk[i].t_hold);
	}

	return 0;
}

int ide_init_postreset(void)
{
	volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
	volatile pcmconf8xx_t *pcmp = &(immr->im_pcmcia);

	/* PCMCIA / IDE initialization for common mem space */
	pcmp->pcmc_pgcrb = 0;

	/* start in PIO mode 0 - most relaxed timings */
	pio_mode = 0;
	set_pcmcia_timing(pio_mode);
	return 0;
}
#endif /* CONFIG_IDE_8xx_DIRECT */

#ifdef CONFIG_IDE_8xx_PCCARD
int ide_preinit(void)
{
	ide_devices_found = 0;
	/* initialize the PCMCIA IDE adapter card */
	pcmcia_on();
	if (!ide_devices_found)
		return 1;
	udelay(1000000);/* 1 s */
	return 0;
}
#endif
Commit	Line	Data
8d1165e1 PH	1	/*
	2	* (C) Copyright 2000-2011
	3	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	4	*
1a459660	5	* SPDX-License-Identifier: GPL-2.0+
8d1165e1 PH	6	*/
	7
	8	/* Code taken from cmd_ide.c */
	9	#include <common.h>
	10	#include <ata.h>
	11	#include "ide.h"
	12
	13	#ifdef CONFIG_IDE_8xx_DIRECT
	14	#include <mpc8xx.h>
	15	#include <pcmcia.h>
	16	DECLARE_GLOBAL_DATA_PTR;
	17
	18	/* Timings for IDE Interface
	19	*
	20	* SETUP / LENGTH / HOLD - cycles valid for 50 MHz clk
	21	* 70 165 30 PIO-Mode 0, [ns]
	22	* 4 9 2 [Cycles]
	23	* 50 125 20 PIO-Mode 1, [ns]
	24	* 3 7 2 [Cycles]
	25	* 30 100 15 PIO-Mode 2, [ns]
	26	* 2 6 1 [Cycles]
	27	* 30 80 10 PIO-Mode 3, [ns]
	28	* 2 5 1 [Cycles]
	29	* 25 70 10 PIO-Mode 4, [ns]
	30	* 2 4 1 [Cycles]
	31	*/
	32
	33	static const pio_config_t pio_config_ns[IDE_MAX_PIO_MODE+1] = {
	34	/* Setup Length Hold */
	35	{ 70, 165, 30 }, /* PIO-Mode 0, [ns] */
	36	{ 50, 125, 20 }, /* PIO-Mode 1, [ns] */
	37	{ 30, 101, 15 }, /* PIO-Mode 2, [ns] */
	38	{ 30, 80, 10 }, /* PIO-Mode 3, [ns] */
	39	{ 25, 70, 10 }, /* PIO-Mode 4, [ns] */
	40	};
	41
	42	static pio_config_t pio_config_clk[IDE_MAX_PIO_MODE+1];
	43
	44	#ifndef CONFIG_SYS_PIO_MODE
	45	#define CONFIG_SYS_PIO_MODE 0 /* use a relaxed default */
	46	#endif
	47	static int pio_mode = CONFIG_SYS_PIO_MODE;
	48
	49	/* Make clock cycles and always round up */
	50
	51	#define PCMCIA_MK_CLKS(t, T) (((t) * (T) + 999U) / 1000U)
	52
	53	static void set_pcmcia_timing(int pmode)
	54	{
	55	volatile immap_t immr = (immap_t ) CONFIG_SYS_IMMR;
	56	volatile pcmconf8xx_t *pcmp = &(immr->im_pcmcia);
	57	ulong timings;
	58
	59	debug("Set timing for PIO Mode %d\n", pmode);
	60
	61	timings = PCMCIA_SHT(pio_config_clk[pmode].t_hold)
	62	\| PCMCIA_SST(pio_config_clk[pmode].t_setup)
	63	\| PCMCIA_SL(pio_config_clk[pmode].t_length);
	64
	65	/*
	66	* IDE 0
	67	*/
	68	pcmp->pcmc_pbr0 = CONFIG_SYS_PCMCIA_PBR0;
	69	#if (CONFIG_SYS_PCMCIA_POR0 != 0)
70	pcmp->pcmc_por0 = CONFIG_SYS_PCMCIA_POR0 \| timings;
71	#else
72	pcmp->pcmc_por0 = CONFIG_SYS_PCMCIA_POR0;
73	#endif
74	debug("PBR0: %08x POR0: %08x\n", pcmp->pcmc_pbr0, pcmp->pcmc_por0);
75
76	pcmp->pcmc_pbr1 = CONFIG_SYS_PCMCIA_PBR1;
77	#if (CONFIG_SYS_PCMCIA_POR1 != 0)
78	pcmp->pcmc_por1 = CONFIG_SYS_PCMCIA_POR1 \| timings;
79	#else
80	pcmp->pcmc_por1 = CONFIG_SYS_PCMCIA_POR1;
81	#endif
82	debug("PBR1: %08x POR1: %08x\n", pcmp->pcmc_pbr1, pcmp->pcmc_por1);
83
84	pcmp->pcmc_pbr2 = CONFIG_SYS_PCMCIA_PBR2;
85	#if (CONFIG_SYS_PCMCIA_POR2 != 0)
86	pcmp->pcmc_por2 = CONFIG_SYS_PCMCIA_POR2 \| timings;
87	#else
88	pcmp->pcmc_por2 = CONFIG_SYS_PCMCIA_POR2;
89	#endif
90	debug("PBR2: %08x POR2: %08x\n", pcmp->pcmc_pbr2, pcmp->pcmc_por2);
91
92	pcmp->pcmc_pbr3 = CONFIG_SYS_PCMCIA_PBR3;
93	#if (CONFIG_SYS_PCMCIA_POR3 != 0)
94	pcmp->pcmc_por3 = CONFIG_SYS_PCMCIA_POR3 \| timings;
95	#else
96	pcmp->pcmc_por3 = CONFIG_SYS_PCMCIA_POR3;
97	#endif
98	debug("PBR3: %08x POR3: %08x\n", pcmp->pcmc_pbr3, pcmp->pcmc_por3);
99
100	/*
101	* IDE 1
102	*/
103	pcmp->pcmc_pbr4 = CONFIG_SYS_PCMCIA_PBR4;
104	#if (CONFIG_SYS_PCMCIA_POR4 != 0)
105	pcmp->pcmc_por4 = CONFIG_SYS_PCMCIA_POR4 \| timings;
106	#else
107	pcmp->pcmc_por4 = CONFIG_SYS_PCMCIA_POR4;
108	#endif
109	debug("PBR4: %08x POR4: %08x\n", pcmp->pcmc_pbr4, pcmp->pcmc_por4);
110
111	pcmp->pcmc_pbr5 = CONFIG_SYS_PCMCIA_PBR5;
112	#if (CONFIG_SYS_PCMCIA_POR5 != 0)
113	pcmp->pcmc_por5 = CONFIG_SYS_PCMCIA_POR5 \| timings;
114	#else
115	pcmp->pcmc_por5 = CONFIG_SYS_PCMCIA_POR5;
116	#endif
117	debug("PBR5: %08x POR5: %08x\n", pcmp->pcmc_pbr5, pcmp->pcmc_por5);
118
119	pcmp->pcmc_pbr6 = CONFIG_SYS_PCMCIA_PBR6;
120	#if (CONFIG_SYS_PCMCIA_POR6 != 0)
121	pcmp->pcmc_por6 = CONFIG_SYS_PCMCIA_POR6 \| timings;
122	#else
123	pcmp->pcmc_por6 = CONFIG_SYS_PCMCIA_POR6;
124	#endif
125	debug("PBR6: %08x POR6: %08x\n", pcmp->pcmc_pbr6, pcmp->pcmc_por6);
126
127	pcmp->pcmc_pbr7 = CONFIG_SYS_PCMCIA_PBR7;
128	#if (CONFIG_SYS_PCMCIA_POR7 != 0)
129	pcmp->pcmc_por7 = CONFIG_SYS_PCMCIA_POR7 \| timings;
130	#else
131	pcmp->pcmc_por7 = CONFIG_SYS_PCMCIA_POR7;
132	#endif
133	debug("PBR7: %08x POR7: %08x\n", pcmp->pcmc_pbr7, pcmp->pcmc_por7);
134
135	}
136
137	int ide_preinit(void)
138	{
139	int i;
140	/* Initialize PIO timing tables */
141	for (i = 0; i <= IDE_MAX_PIO_MODE; ++i) {
142	pio_config_clk[i].t_setup =
143	PCMCIA_MK_CLKS(pio_config_ns[i].t_setup, gd->bus_clk);
144	pio_config_clk[i].t_length =
145	PCMCIA_MK_CLKS(pio_config_ns[i].t_length, gd->bus_clk);
146	pio_config_clk[i].t_hold =
147	PCMCIA_MK_CLKS(pio_config_ns[i].t_hold, gd->bus_clk);
148	debug("PIO Mode %d: setup=%2d ns/%d clk" " len=%3d ns/%d clk"
149	" hold=%2d ns/%d clk\n", i, pio_config_ns[i].t_setup,
150	pio_config_clk[i].t_setup, pio_config_ns[i].t_length,
151	pio_config_clk[i].t_length, pio_config_ns[i].t_hold,
152	pio_config_clk[i].t_hold);
153	}
154
155	return 0;
156	}
157
158	int ide_init_postreset(void)
159	{
160	volatile immap_t immr = (immap_t ) CONFIG_SYS_IMMR;
161	volatile pcmconf8xx_t *pcmp = &(immr->im_pcmcia);
162
163	/* PCMCIA / IDE initialization for common mem space */
164	pcmp->pcmc_pgcrb = 0;
165
166	/* start in PIO mode 0 - most relaxed timings */
167	pio_mode = 0;
168	set_pcmcia_timing(pio_mode);
169	return 0;
170	}
171	#endif /* CONFIG_IDE_8xx_DIRECT */
172
173	#ifdef CONFIG_IDE_8xx_PCCARD
174	int ide_preinit(void)
175	{
176	ide_devices_found = 0;
177	/* initialize the PCMCIA IDE adapter card */
178	pcmcia_on();
179	if (!ide_devices_found)
180	return 1;
181	udelay(1000000);/* 1 s */
182	return 0;
183	}
184	#endif