amcc_s5933_58.h

最新版comedi的源码

/*
	Modified by umesh on 16th may 2001
	Modified by sarath on 22nd may 2001
*/



/*
    comedi/drivers/amcc_s5933_v_58.h

    Stuff for AMCC S5933 PCI Controller
    
    Author: Michal Dobes <[e-mail]>

    Inspirated from general-purpose AMCC S5933 PCI Matchmaker driver  
    made by Andrea Cisternino  <[e-mail]>
    and as result of espionage from MITE code made by David A. Schleef.
    Thanks to AMCC for their on-line documentation and bus master DMA
    example.
*/

#ifndef _AMCC_S5933_H_
#define _AMCC_S5933_H_

#include <linux/pci.h>
#include <linux/comedidev.h>

#ifdef PCI_SUPPORT_VER1
#error    Sorry, no support for 2.1.55 and older! :-((((
#endif

/***********Added by sarath for compatibility with APCI3120 

*************************/

#define FIFO_ADVANCE_ON_BYTE_2     0x20000000	// written on base0

#define AMWEN_ENABLE                     0x02   // added for step 6 dma written on base2
#define A2P_FIFO_WRITE_ENABLE            0x01  

#define AGCSTS_TC_ENABLE		   0x10000000   // Added for transfer count enable bit

//  ADDON RELATED ADDITIONS
// Constant
   #define     APCI3120_ENABLE_TRANSFER_ADD_ON_LOW       0x00
   #define     APCI3120_ENABLE_TRANSFER_ADD_ON_HIGH      0x1200
   #define     APCI3120_A2P_FIFO_MANAGEMENT              0x04000400L
   #define     APCI3120_AMWEN_ENABLE                     0x02
   #define     APCI3120_A2P_FIFO_WRITE_ENABLE            0x01
   #define     APCI3120_FIFO_ADVANCE_ON_BYTE_2           0x20000000L
   #define     APCI3120_ENABLE_WRITE_TC_INT              0x00004000L
   #define     APCI3120_CLEAR_WRITE_TC_INT               0x00040000L
   #define     APCI3120_DISABLE_AMWEN_AND_A2P_FIFO_WRITE 0x0
   #define     APCI3120_DISABLE_BUS_MASTER_ADD_ON        0x0
   #define     APCI3120_DISABLE_BUS_MASTER_PCI           0x0


 // ADD_ON ::: this needed since apci supports 16 bit interface to add on 
   #define     APCI3120_ADD_ON_AGCSTS_LOW       0x3C
   #define     APCI3120_ADD_ON_AGCSTS_HIGH      APCI3120_ADD_ON_AGCSTS_LOW + 2
   #define     APCI3120_ADD_ON_MWAR_LOW         0x24
   #define     APCI3120_ADD_ON_MWAR_HIGH        APCI3120_ADD_ON_MWAR_LOW + 2
   #define     APCI3120_ADD_ON_MWTC_LOW         0x058
   #define     APCI3120_ADD_ON_MWTC_HIGH        APCI3120_ADD_ON_MWTC_LOW + 2

// AMCC
   #define     APCI3120_AMCC_OP_MCSR            0x3C
   #define     APCI3120_AMCC_OP_REG_INTCSR      0x38

/*******from here all upward definitions are added by sarath */



/****************************************************************************/
/* AMCC Operation Register Offsets - PCI                                    */
/****************************************************************************/

#define AMCC_OP_REG_OMB1         0x00
#define AMCC_OP_REG_OMB2         0x04
#define AMCC_OP_REG_OMB3         0x08
#define AMCC_OP_REG_OMB4         0x0c
#define AMCC_OP_REG_IMB1         0x10
#define AMCC_OP_REG_IMB2         0x14
#define AMCC_OP_REG_IMB3         0x18
#define AMCC_OP_REG_IMB4         0x1c
#define AMCC_OP_REG_FIFO         0x20
#define AMCC_OP_REG_MWAR         0x24
#define AMCC_OP_REG_MWTC         0x28
#define AMCC_OP_REG_MRAR         0x2c
#define AMCC_OP_REG_MRTC         0x30
#define AMCC_OP_REG_MBEF         0x34
#define AMCC_OP_REG_INTCSR       0x38
#define  AMCC_OP_REG_INTCSR_SRC  (AMCC_OP_REG_INTCSR + 2) /* INT source */
#define  AMCC_OP_REG_INTCSR_FEC  (AMCC_OP_REG_INTCSR + 3) /* FIFO ctrl */
#define AMCC_OP_REG_MCSR         0x3c
#define  AMCC_OP_REG_MCSR_NVDATA (AMCC_OP_REG_MCSR + 2) /* Data in byte 2 */
#define  AMCC_OP_REG_MCSR_NVCMD  (AMCC_OP_REG_MCSR + 3) /* Command in byte 3 */

#define AMCC_FIFO_DEPTH_DWORD	8
#define AMCC_FIFO_DEPTH_BYTES	(8 * sizeof (u32))

/****************************************************************************/
/* AMCC Operation Registers Size - PCI                                      */
/****************************************************************************/

#define AMCC_OP_REG_SIZE	 64	/* in bytes */

/****************************************************************************/
/* AMCC Operation Register Offsets - Add-on                                 */
/****************************************************************************/

#define AMCC_OP_REG_AIMB1         0x00
#define AMCC_OP_REG_AIMB2         0x04
#define AMCC_OP_REG_AIMB3         0x08
#define AMCC_OP_REG_AIMB4         0x0c
#define AMCC_OP_REG_AOMB1         0x10
#define AMCC_OP_REG_AOMB2         0x14
#define AMCC_OP_REG_AOMB3         0x18
#define AMCC_OP_REG_AOMB4         0x1c
#define AMCC_OP_REG_AFIFO         0x20
#define AMCC_OP_REG_AMWAR         0x24
#define AMCC_OP_REG_APTA          0x28
#define AMCC_OP_REG_APTD          0x2c
#define AMCC_OP_REG_AMRAR         0x30
#define AMCC_OP_REG_AMBEF         0x34
#define AMCC_OP_REG_AINT          0x38
#define AMCC_OP_REG_AGCSTS        0x3c
#define AMCC_OP_REG_AMWTC         0x58
#define AMCC_OP_REG_AMRTC         0x5c

/****************************************************************************/
/* AMCC - Add-on General Control/Status Register                            */
/****************************************************************************/

#define AGCSTS_CONTROL_MASK	0xfffff000
#define  AGCSTS_NV_ACC_MASK	0xe0000000
#define  AGCSTS_RESET_MASK	0x0e000000
#define  AGCSTS_NV_DA_MASK	0x00ff0000
#define  AGCSTS_BIST_MASK	0x0000f000
#define AGCSTS_STATUS_MASK	0x000000ff
#define  AGCSTS_TCZERO_MASK	0x000000c0
#define  AGCSTS_FIFO_ST_MASK	0x0000003f

#define AGCSTS_RESET_MBFLAGS	0x08000000
#define AGCSTS_RESET_P2A_FIFO	0x04000000
#define AGCSTS_RESET_A2P_FIFO	0x02000000
#define AGCSTS_RESET_FIFOS	(AGCSTS_RESET_A2P_FIFO | AGCSTS_RESET_P2A_FIFO)

#define AGCSTS_A2P_TCOUNT	0x00000080
#define AGCSTS_P2A_TCOUNT	0x00000040

#define AGCSTS_FS_P2A_EMPTY	0x00000020
#define AGCSTS_FS_P2A_HALF	0x00000010
#define AGCSTS_FS_P2A_FULL	0x00000008

#define AGCSTS_FS_A2P_EMPTY	0x00000004
#define AGCSTS_FS_A2P_HALF	0x00000002
#define AGCSTS_FS_A2P_FULL	0x00000001

/****************************************************************************/
/* AMCC - Add-on Interrupt Control/Status Register                            */
/****************************************************************************/

#define AINT_INT_MASK		0x00ff0000
#define AINT_SEL_MASK		0x0000ffff
#define  AINT_IS_ENSEL_MASK	0x00001f1f

#define AINT_INT_ASSERTED	0x00800000
#define AINT_BM_ERROR		0x00200000
#define AINT_BIST_INT		0x00100000

#define AINT_RT_COMPLETE	0x00080000
#define AINT_WT_COMPLETE	0x00040000

#define AINT_OUT_MB_INT		0x00020000
#define AINT_IN_MB_INT		0x00010000

#define AINT_READ_COMPL		0x00008000
#define AINT_WRITE_COMPL	0x00004000

#define AINT_OMB_ENABLE 	0x00001000
#define AINT_OMB_SELECT 	0x00000c00
#define AINT_OMB_BYTE		0x00000300

#define AINT_IMB_ENABLE 	0x00000010
#define AINT_IMB_SELECT 	0x0000000c
#define AINT_IMB_BYTE		0x00000003

/* Enable Bus Mastering */
#define EN_A2P_TRANSFERS	0x00000400
/* FIFO Flag Reset */
#define RESET_A2P_FLAGS		0x04000000L
/* FIFO Relative Priority */
#define A2P_HI_PRIORITY		0x00000100L
/* Identify Interrupt Sources */
#define ANY_S593X_INT		0x00800000L
#define READ_TC_INT		0x00080000L
#define WRITE_TC_INT		0x00040000L
#define IN_MB_INT		0x00020000L
#define MASTER_ABORT_INT	0x00100000L
#define TARGET_ABORT_INT	0x00200000L
#define BUS_MASTER_INT		0x00200000L

/****************************************************************************/

struct pcilst_struct{
	struct 		pcilst_struct *next;
	int 		used;
	struct pci_dev 	*pcidev;
	unsigned short	vendor;
	unsigned short	device;
	unsigned int	master;
	unsigned char	pci_bus;
	unsigned char	pci_slot;
	unsigned char	pci_func;
	unsigned int	io_addr[5];
	unsigned int	irq;
};

struct pcilst_struct *amcc_devices;	// ptr to root list of all amcc devices

/****************************************************************************/

void v_pci_card_list_init(unsigned short pci_vendor, char display);
void v_pci_card_list_cleanup(unsigned short pci_vendor);
struct pcilst_struct *ptr_find_free_pci_card_by_device(unsigned short vendor_id, unsigned short device_id);
int i_find_free_pci_card_by_position(unsigned short vendor_id, unsigned short device_id, unsigned short pci_bus, unsigned short pci_slot, struct pcilst_struct **card);
struct pcilst_struct *ptr_select_and_alloc_pci_card(unsigned short vendor_id, unsigned short device_id, unsigned short pci_bus, unsigned short pci_slot);

int i_pci_card_alloc(struct pcilst_struct *amcc);
int i_pci_card_free(struct pcilst_struct *amcc);
void v_pci_card_list_display(void);
int i_pci_card_data(struct pcilst_struct *amcc,
	unsigned char *pci_bus, unsigned char *pci_slot, unsigned char *pci_func,
	unsigned short *io_addr, unsigned short *irq, unsigned short *master);

/****************************************************************************/

/* build list of amcc cards in this system */
void v_pci_card_list_init(unsigned short pci_vendor, char display)
{
	struct pci_dev *pcidev;
	struct pcilst_struct *amcc,*last;
	int i;

	amcc_devices=NULL;
	last=NULL;
	
#if LINUX_VERSION_CODE < 0x020300
	for(pcidev=pci_devices;pcidev;pcidev=pcidev->next){
#else
	pci_for_each_dev(pcidev){
#endif
		if(pcidev->vendor==pci_vendor){
			amcc=kmalloc(sizeof(*amcc),GFP_KERNEL);
			memset(amcc,0,sizeof(*amcc));

			amcc->pcidev=pcidev;
			if (last) { last->next=amcc; }
			     else { amcc_devices=amcc; }
			last=amcc;
			
#if LINUX_VERSION_CODE < 0x020300
			amcc->vendor=pcidev->vendor;		
			amcc->device=pcidev->device;
			amcc->master=pcidev->master;
			amcc->pci_bus=pcidev->bus->number;
			amcc->pci_slot=PCI_SLOT(pcidev->devfn);
			amcc->pci_func=PCI_FUNC(pcidev->devfn);
			for (i=0;i<5;i++)
				amcc->io_addr[i]=pcidev->base_address[i] & ~3UL;
			amcc->irq=pcidev->irq;
#else
			amcc->vendor=pcidev->vendor;		
			amcc->device=pcidev->device;
#if 0
			amcc->master=pcidev->master; // how get this information under 2.4 kernels?
#endif
			amcc->pci_bus=pcidev->bus->number;
			amcc->pci_slot=PCI_SLOT(pcidev->devfn);
			amcc->pci_func=PCI_FUNC(pcidev->devfn);
			for (i=0;i<5;i++)
				amcc->io_addr[i]=pcidev->resource[i].start & ~3UL;
			amcc->irq=pcidev->irq;
#endif
			
		}
	}

	if (display) v_pci_card_list_display();
}

/****************************************************************************/
/* free up list of amcc cards in this system */
void v_pci_card_list_cleanup(unsigned short pci_vendor)
{
	struct pcilst_struct *amcc,*next;

	for(amcc=amcc_devices;amcc;amcc=next){
		next=amcc->next;
		kfree(amcc);
	}
	
	amcc_devices=NULL;
}

/****************************************************************************/
/* find first unused card with this device_id */
struct pcilst_struct *ptr_find_free_pci_card_by_device(unsigned short vendor_id, unsigned short device_id)
{
	struct pcilst_struct *amcc,*next;

	for (amcc=amcc_devices;amcc;amcc=next) {
		next=amcc->next;
		if ((!amcc->used)&&(amcc->device==device_id)&&(amcc->vendor==vendor_id)) return amcc;
		
	}

	return NULL;
}

/****************************************************************************/
/* find card on requested position */
int i_find_free_pci_card_by_position(unsigned short vendor_id, unsigned short device_id, unsigned short pci_bus, unsigned short pci_slot, struct pcilst_struct **card)
{
	struct pcilst_struct *amcc,*next;

	*card=NULL;
	for (amcc=amcc_devices;amcc;amcc=next) {
		next=amcc->next;
		if ((amcc->vendor==vendor_id)&&(amcc->device==device_id)&&(amcc->pci_bus==pci_bus)&&(amcc->pci_slot==pci_slot)) {
			if (!(amcc->used)) {
				*card=amcc;
				return 0;	// ok, card is found
			} else {
			        rt_printk(" - \nCard on requested position is used b:s %d:%d!\n",pci_bus,pci_slot);
				return 2;	// card exist but is used
			}
		}
	}

        return 1; // no card found
}

/****************************************************************************/
/* mark card as used */
int i_pci_card_alloc(struct pcilst_struct *amcc)
{
	if (!amcc) return -1;

	if (amcc->used) return 1;
	amcc->used=1;
	return 0;
}

/****************************************************************************/
/* mark card as free */
int i_pci_card_free(struct pcilst_struct *amcc)
{
	if (!amcc) return -1;

	if (!amcc->used) return 1;
	amcc->used=0;
	return 0;
}

/****************************************************************************/
/* display list of found cards */
void v_pci_card_list_display(void)
{
	struct pcilst_struct *amcc,*next;

	printk("List of pci cards\n");
	printk("bus:slot:func vendor device master io_amcc io_daq irq used\n");

	for (amcc=amcc_devices;amcc;amcc=next) {
		next=amcc->next;
		printk("%2d   %2d   %2d  0x%4x 0x%4x   %3s   0x%4x 0x%4x  %2d  %2d\n",
			amcc->pci_bus,amcc->pci_slot,amcc->pci_func,amcc->vendor,amcc->device,amcc->master?"yes":"no",
			amcc->io_addr[0],amcc->io_addr[2],amcc->irq,amcc->used);
		
	}
}

/****************************************************************************/
/* return all card information for driver */
int i_pci_card_data(struct pcilst_struct *amcc,
	unsigned char *pci_bus, unsigned char *pci_slot, unsigned char *pci_func,
	unsigned short *io_addr, unsigned short *irq, unsigned short *master)
{
	int	i;
	
	if (!amcc) return -1;
	*pci_bus=amcc->pci_bus;
	*pci_slot=amcc->pci_slot;
	*pci_func=amcc->pci_func;
	for (i=0;i<5;i++)
		io_addr[i]=amcc->io_addr[i];
	*irq=amcc->irq;
	*master=amcc->master;
	return 0;
}

/****************************************************************************/
/* select and alloc card */
struct pcilst_struct *ptr_select_and_alloc_pci_card(unsigned short vendor_id, unsigned short device_id, unsigned short pci_bus, unsigned short pci_slot)
{
	struct pcilst_struct *card;
	
	if ((pci_bus<1)&(pci_slot<1)) { // use autodetection
		if ((card=ptr_find_free_pci_card_by_device(vendor_id,device_id))==NULL) {
			rt_printk(" - Unused card not found in system!\n");
			return NULL;
		}
	} else {
		switch (i_find_free_pci_card_by_position(vendor_id,device_id,pci_bus,pci_slot,&card)) {
		case 1:
			rt_printk(" - Card not found on requested position b:s %d:%d!\n",pci_bus,pci_slot);
			return NULL;
		case 2:
			rt_printk(" - Card on requested position is used b:s %d:%d!\n",pci_bus,pci_slot);
			return NULL;
		}
	}


	if (i_pci_card_alloc(card)!=0) {
		rt_printk(" - Can't allocate card!\n");
		return NULL;
	}

	return card;
}

#endif