board/mpc8349ads/pci.c - platform/external/u-boot - Gitiles

 /*
  * See file CREDITS for list of people who contributed to this
  * project.
  *
  * 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.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  * MA 02111-1307 USA
  *
  */

 #include <asm/mmu.h>
 #include <common.h>
 #include <asm/global_data.h>
 #include <pci.h>
 #include <i2c.h>

 #ifdef CONFIG_PCI

 /* System RAM mapped to PCI space */
 #define CONFIG_PCI_SYS_MEM_BUS	CFG_SDRAM_BASE
 #define CONFIG_PCI_SYS_MEM_PHYS	CFG_SDRAM_BASE

 #ifndef CONFIG_PCI_PNP
 static struct pci_config_table pci_mpc83xxads_config_table[] = {
 	{PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
 	 PCI_IDSEL_NUMBER, PCI_ANY_ID,
  	 pci_cfgfunc_config_device, {PCI_ENET0_IOADDR,
 				     PCI_ENET0_MEMADDR,
 				     PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER
 		}
 	},
 	{}
 };
 #endif

 static struct pci_controller pci_hose[] = {
        {
 #ifndef CONFIG_PCI_PNP
        config_table:pci_mpc83xxads_config_table,
 #endif
        },
        {
 #ifndef CONFIG_PCI_PNP
        config_table:pci_mpc83xxads_config_table,
 #endif
        }
 };

 /**************************************************************************
  *
  * pib_init() -- initialize the PCA9555PW IO expander on the PIB board
  *
  */
 void
 pib_init(void)
 {
 	u8 val8;
 	/*
 	 * Assign PIB PMC slot to desired PCI bus
 	 */
 	mpc8349_i2c = (i2c_t*)(CFG_IMMRBAR + CFG_I2C2_OFFSET);
 	i2c_init(CFG_I2C_SPEED, CFG_I2C_SLAVE);

 	val8 = 0;
 	i2c_write(0x23, 0x6, 1, &val8, 1);
 	i2c_write(0x23, 0x7, 1, &val8, 1);
 	val8 = 0xff;
 	i2c_write(0x23, 0x2, 1, &val8, 1);
 	i2c_write(0x23, 0x3, 1, &val8, 1);

 	val8 = 0;
 	i2c_write(0x26, 0x6, 1, &val8, 1);
 	val8 = 0x34;
 	i2c_write(0x26, 0x7, 1, &val8, 1);
 #if defined(PCI_64BIT)
 	val8 = 0xf4;	/* PMC2:PCI1/64-bit */
 #elif defined(PCI_ALL_PCI1)
 	val8 = 0xf3;	/* PMC1:PCI1 PMC2:PCI1 PMC3:PCI1 */
 #elif defined(PCI_ONE_PCI1)
 	val8 = 0xf9;	/* PMC1:PCI1 PMC2:PCI2 PMC3:PCI2 */
 #else
 	val8 = 0xf5;	/* PMC1:PCI1 PMC2:PCI1 PMC3:PCI2 */
 #endif
 	i2c_write(0x26, 0x2, 1, &val8, 1);
 	val8 = 0xff;
 	i2c_write(0x26, 0x3, 1, &val8, 1);
 	val8 = 0;
 	i2c_write(0x27, 0x6, 1, &val8, 1);
 	i2c_write(0x27, 0x7, 1, &val8, 1);
 	val8 = 0xff;
 	i2c_write(0x27, 0x2, 1, &val8, 1);
 	val8 = 0xef;
 	i2c_write(0x27, 0x3, 1, &val8, 1);
 	asm("eieio");

 #if defined(PCI_64BIT)
 	printf("PCI1: 64-bit on PMC2\n");
 #elif defined(PCI_ALL_PCI1)
 	printf("PCI1: 32-bit on PMC1, PMC2, PMC3\n");
 #elif defined(PCI_ONE_PCI1)
 	printf("PCI1: 32-bit on PMC1\n");
 	printf("PCI2: 32-bit on PMC2, PMC3\n");
 #else
 	printf("PCI1: 32-bit on PMC1, PMC2\n");
 	printf("PCI2: 32-bit on PMC3\n");
 #endif
 }

 /**************************************************************************
  * pci_init_board()
  *
  * NOTICE: PCI2 is not currently supported
  *
  */
 void
 pci_init_board(void)
 {
 	DECLARE_GLOBAL_DATA_PTR;
 	volatile immap_t *	immr;
 	volatile clk8349_t *	clk;
 	volatile law8349_t *	pci_law;
 	volatile pot8349_t *	pci_pot;
 	volatile pcictrl8349_t *	pci_ctrl;
 	volatile pciconf8349_t *	pci_conf;
 	u16 reg16;
 	u32 reg32;
 	struct	pci_controller * hose;

 	immr = (immap_t *)CFG_IMMRBAR;
 	clk = (clk8349_t *)&immr->clk;
 	pci_law = immr->sysconf.pcilaw;
 	pci_pot = immr->ios.pot;
 	pci_ctrl = immr->pci_ctrl;
 	pci_conf = immr->pci_conf;

 	hose = &pci_hose[0];

 	pib_init();

 	/*
 	 * Configure PCI controller and PCI_CLK_OUTPUT both in 66M mode
 	 */

 	reg32 = clk->occr;
 	udelay(2000);
 	clk->occr = 0xff000000;
 	udelay(2000);

 	/*
 	 * Release PCI RST Output signal
 	 */
 	pci_ctrl[0].gcr = 0;
 	udelay(2000);
 	pci_ctrl[0].gcr = 1;
 	udelay(2000);

 	/*
 	 * Configure PCI Local Access Windows
 	 */
 	pci_law[0].bar = CFG_PCI1_MEM_PHYS & LAWBAR_BAR;
 	pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_1G;

 	pci_law[1].bar = CFG_PCI1_IO_PHYS & LAWBAR_BAR;
 	pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_32M;

 	/*
 	 * Configure PCI Outbound Translation Windows
 	 */

 	/* PCI1 mem space */
 	pci_pot[0].potar = (CFG_PCI1_MEM_BASE >> 12) & POTAR_TA_MASK;
 	pci_pot[0].pobar = (CFG_PCI1_MEM_PHYS >> 12) & POBAR_BA_MASK;
 	pci_pot[0].pocmr = POCMR_EN | (POCMR_CM_512M & POCMR_CM_MASK);

 	/* PCI1 IO space */
 	pci_pot[1].potar = (CFG_PCI1_IO_BASE >> 12) & POTAR_TA_MASK;
 	pci_pot[1].pobar = (CFG_PCI1_IO_PHYS >> 12) & POBAR_BA_MASK;
 	pci_pot[1].pocmr = POCMR_EN | POCMR_IO | (POCMR_CM_16M & POCMR_CM_MASK);

 	/*
 	 * Configure PCI Inbound Translation Windows
 	 */

 	/* we need RAM mapped to PCI space for the devices to
 	 * access main memory */
 	pci_ctrl[0].pitar1 = 0x0;
 	pci_ctrl[0].pibar1 = 0x0;
 	pci_ctrl[0].piebar1 = 0x0;
 	pci_ctrl[0].piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP | PIWAR_WTT_SNOOP | PIWAR_IWS_2G;

 	hose->first_busno = 0;
 	hose->last_busno = 0xff;

 	/* PCI memory space */
 	pci_set_region(hose->regions + 0,
 		       CFG_PCI1_MEM_BASE,
 		       CFG_PCI1_MEM_PHYS,
 		       CFG_PCI1_MEM_SIZE,
 		       PCI_REGION_MEM);

 	/* PCI IO space */
 	pci_set_region(hose->regions + 1,
 		       CFG_PCI1_IO_BASE,
 		       CFG_PCI1_IO_PHYS,
 		       CFG_PCI1_IO_SIZE,
 		       PCI_REGION_IO);

 	/* System memory space */
 	pci_set_region(hose->regions + 2,
 		       CONFIG_PCI_SYS_MEM_BUS,
                        CONFIG_PCI_SYS_MEM_PHYS,
                        gd->ram_size,
                        PCI_REGION_MEM | PCI_REGION_MEMORY);

 	hose->region_count = 3;

 	pci_setup_indirect(hose,
 			   (CFG_IMMRBAR+0x8300),
 			   (CFG_IMMRBAR+0x8304));

 	pci_register_hose(hose);

 	/*
 	 * Write to Command register
 	 */
 	reg16 = 0xff;
 	pci_hose_read_config_word (hose, PCI_BDF(0,0,0), PCI_COMMAND,
 					&reg16);
 	reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
 	pci_hose_write_config_word(hose, PCI_BDF(0,0,0), PCI_COMMAND,
 					reg16);

 	/*
 	 * Clear non-reserved bits in status register.
 	 */
 	pci_hose_write_config_word(hose, PCI_BDF(0,0,0), PCI_STATUS,
 					0xffff);
 	pci_hose_write_config_byte(hose, PCI_BDF(0,0,0), PCI_LATENCY_TIMER,
 					0x80);

 #ifdef CONFIG_PCI_SCAN_SHOW
 	printf("PCI:   Bus Dev VenId DevId Class Int\n");
 #endif
 	/*
 	 * Hose scan.
 	 */
 	hose->last_busno = pci_hose_scan(hose);
 }
 #endif /* CONFIG_PCI */
	/*
	* See file CREDITS for list of people who contributed to this
	* project.
	*
	* 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.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	* MA 02111-1307 USA
	*
	*/

	#include <asm/mmu.h>
	#include <common.h>
	#include <asm/global_data.h>
	#include <pci.h>
	#include <i2c.h>

	#ifdef CONFIG_PCI

	/* System RAM mapped to PCI space */
	#define CONFIG_PCI_SYS_MEM_BUS CFG_SDRAM_BASE
	#define CONFIG_PCI_SYS_MEM_PHYS CFG_SDRAM_BASE

	#ifndef CONFIG_PCI_PNP
	static struct pci_config_table pci_mpc83xxads_config_table[] = {
	{PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
	PCI_IDSEL_NUMBER, PCI_ANY_ID,
	pci_cfgfunc_config_device, {PCI_ENET0_IOADDR,
	PCI_ENET0_MEMADDR,
	PCI_COMMAND_MEMORY \| PCI_COMMAND_MASTER
	}
	},
	{}
	};
	#endif

	static struct pci_controller pci_hose[] = {
	{
	#ifndef CONFIG_PCI_PNP
	config_table:pci_mpc83xxads_config_table,
	#endif
	},
	{
	#ifndef CONFIG_PCI_PNP
	config_table:pci_mpc83xxads_config_table,
	#endif
	}
	};

	/**************************************************************************
	*
	* pib_init() -- initialize the PCA9555PW IO expander on the PIB board
	*
	*/
	void
	pib_init(void)
	{
	u8 val8;
	/*
	* Assign PIB PMC slot to desired PCI bus
	*/
	mpc8349_i2c = (i2c_t*)(CFG_IMMRBAR + CFG_I2C2_OFFSET);
	i2c_init(CFG_I2C_SPEED, CFG_I2C_SLAVE);

	val8 = 0;
	i2c_write(0x23, 0x6, 1, &val8, 1);
	i2c_write(0x23, 0x7, 1, &val8, 1);
	val8 = 0xff;
	i2c_write(0x23, 0x2, 1, &val8, 1);
	i2c_write(0x23, 0x3, 1, &val8, 1);

	val8 = 0;
	i2c_write(0x26, 0x6, 1, &val8, 1);
	val8 = 0x34;
	i2c_write(0x26, 0x7, 1, &val8, 1);
	#if defined(PCI_64BIT)
	val8 = 0xf4; /* PMC2:PCI1/64-bit */
	#elif defined(PCI_ALL_PCI1)
	val8 = 0xf3; /* PMC1:PCI1 PMC2:PCI1 PMC3:PCI1 */
	#elif defined(PCI_ONE_PCI1)
	val8 = 0xf9; /* PMC1:PCI1 PMC2:PCI2 PMC3:PCI2 */
	#else
	val8 = 0xf5; /* PMC1:PCI1 PMC2:PCI1 PMC3:PCI2 */
	#endif
	i2c_write(0x26, 0x2, 1, &val8, 1);
	val8 = 0xff;
	i2c_write(0x26, 0x3, 1, &val8, 1);
	val8 = 0;
	i2c_write(0x27, 0x6, 1, &val8, 1);
	i2c_write(0x27, 0x7, 1, &val8, 1);
	val8 = 0xff;
	i2c_write(0x27, 0x2, 1, &val8, 1);
	val8 = 0xef;
	i2c_write(0x27, 0x3, 1, &val8, 1);
	asm("eieio");

	#if defined(PCI_64BIT)
	printf("PCI1: 64-bit on PMC2\n");
	#elif defined(PCI_ALL_PCI1)
	printf("PCI1: 32-bit on PMC1, PMC2, PMC3\n");
	#elif defined(PCI_ONE_PCI1)
	printf("PCI1: 32-bit on PMC1\n");
	printf("PCI2: 32-bit on PMC2, PMC3\n");
	#else
	printf("PCI1: 32-bit on PMC1, PMC2\n");
	printf("PCI2: 32-bit on PMC3\n");
	#endif
	}

	/**************************************************************************
	* pci_init_board()
	*
	* NOTICE: PCI2 is not currently supported
	*
	*/
	void
	pci_init_board(void)
	{
	DECLARE_GLOBAL_DATA_PTR;
	volatile immap_t * immr;
	volatile clk8349_t * clk;
	volatile law8349_t * pci_law;
	volatile pot8349_t * pci_pot;
	volatile pcictrl8349_t * pci_ctrl;
	volatile pciconf8349_t * pci_conf;
	u16 reg16;
	u32 reg32;
	struct pci_controller * hose;

	immr = (immap_t *)CFG_IMMRBAR;
	clk = (clk8349_t *)&immr->clk;
	pci_law = immr->sysconf.pcilaw;
	pci_pot = immr->ios.pot;
	pci_ctrl = immr->pci_ctrl;
	pci_conf = immr->pci_conf;

	hose = &pci_hose[0];

	pib_init();

	/*
	* Configure PCI controller and PCI_CLK_OUTPUT both in 66M mode
	*/

	reg32 = clk->occr;
	udelay(2000);
	clk->occr = 0xff000000;
	udelay(2000);

	/*
	* Release PCI RST Output signal
	*/
	pci_ctrl[0].gcr = 0;
	udelay(2000);
	pci_ctrl[0].gcr = 1;
	udelay(2000);

	/*
	* Configure PCI Local Access Windows
	*/
	pci_law[0].bar = CFG_PCI1_MEM_PHYS & LAWBAR_BAR;
	pci_law[0].ar = LAWAR_EN \| LAWAR_SIZE_1G;

	pci_law[1].bar = CFG_PCI1_IO_PHYS & LAWBAR_BAR;
	pci_law[1].ar = LAWAR_EN \| LAWAR_SIZE_32M;

	/*
	* Configure PCI Outbound Translation Windows
	*/

	/* PCI1 mem space */
	pci_pot[0].potar = (CFG_PCI1_MEM_BASE >> 12) & POTAR_TA_MASK;
	pci_pot[0].pobar = (CFG_PCI1_MEM_PHYS >> 12) & POBAR_BA_MASK;
	pci_pot[0].pocmr = POCMR_EN \| (POCMR_CM_512M & POCMR_CM_MASK);

	/* PCI1 IO space */
	pci_pot[1].potar = (CFG_PCI1_IO_BASE >> 12) & POTAR_TA_MASK;
	pci_pot[1].pobar = (CFG_PCI1_IO_PHYS >> 12) & POBAR_BA_MASK;
	pci_pot[1].pocmr = POCMR_EN \| POCMR_IO \| (POCMR_CM_16M & POCMR_CM_MASK);

	/*
	* Configure PCI Inbound Translation Windows
	*/

	/* we need RAM mapped to PCI space for the devices to
	* access main memory */
	pci_ctrl[0].pitar1 = 0x0;
	pci_ctrl[0].pibar1 = 0x0;
	pci_ctrl[0].piebar1 = 0x0;
	pci_ctrl[0].piwar1 = PIWAR_EN \| PIWAR_PF \| PIWAR_RTT_SNOOP \| PIWAR_WTT_SNOOP \| PIWAR_IWS_2G;

	hose->first_busno = 0;
	hose->last_busno = 0xff;

	/* PCI memory space */
	pci_set_region(hose->regions + 0,
	CFG_PCI1_MEM_BASE,
	CFG_PCI1_MEM_PHYS,
	CFG_PCI1_MEM_SIZE,
	PCI_REGION_MEM);

	/* PCI IO space */
	pci_set_region(hose->regions + 1,
	CFG_PCI1_IO_BASE,
	CFG_PCI1_IO_PHYS,
	CFG_PCI1_IO_SIZE,
	PCI_REGION_IO);

	/* System memory space */
	pci_set_region(hose->regions + 2,
	CONFIG_PCI_SYS_MEM_BUS,
	CONFIG_PCI_SYS_MEM_PHYS,
	gd->ram_size,
	PCI_REGION_MEM \| PCI_REGION_MEMORY);

	hose->region_count = 3;

	pci_setup_indirect(hose,
	(CFG_IMMRBAR+0x8300),
	(CFG_IMMRBAR+0x8304));

	pci_register_hose(hose);

	/*
	* Write to Command register
	*/
	reg16 = 0xff;
	pci_hose_read_config_word (hose, PCI_BDF(0,0,0), PCI_COMMAND,
	&reg16);
	reg16 \|= PCI_COMMAND_SERR \| PCI_COMMAND_MASTER \| PCI_COMMAND_MEMORY;
	pci_hose_write_config_word(hose, PCI_BDF(0,0,0), PCI_COMMAND,
	reg16);

	/*
	* Clear non-reserved bits in status register.
	*/
	pci_hose_write_config_word(hose, PCI_BDF(0,0,0), PCI_STATUS,
	0xffff);
	pci_hose_write_config_byte(hose, PCI_BDF(0,0,0), PCI_LATENCY_TIMER,
	0x80);

	#ifdef CONFIG_PCI_SCAN_SHOW
	printf("PCI: Bus Dev VenId DevId Class Int\n");
	#endif
	/*
	* Hose scan.
	*/
	hose->last_busno = pci_hose_scan(hose);
	}
	#endif /* CONFIG_PCI */