457 lines
14 KiB
C
457 lines
14 KiB
C
/*
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Modified by umesh on 16th may 2001
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Modified by sarath on 22nd may 2001
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*/
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/*
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comedi/drivers/amcc_s5933_v_58.h
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Stuff for AMCC S5933 PCI Controller
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Author: Michal Dobes <majkl@tesnet.cz>
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Inspirated from general-purpose AMCC S5933 PCI Matchmaker driver
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made by Andrea Cisternino <acister@pcape1.pi.infn.it>
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and as result of espionage from MITE code made by David A. Schleef.
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Thanks to AMCC for their on-line documentation and bus master DMA
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example.
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*/
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#ifndef _AMCC_S5933_H_
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#define _AMCC_S5933_H_
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#include <linux/pci.h>
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#include "../../comedidev.h"
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#ifdef PCI_SUPPORT_VER1
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#error Sorry, no support for 2.1.55 and older! :-((((
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#endif
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/***********Added by sarath for compatibility with APCI3120
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*************************/
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#define FIFO_ADVANCE_ON_BYTE_2 0x20000000 /* written on base0 */
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#define AMWEN_ENABLE 0x02 /* added for step 6 dma written on base2 */
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#define A2P_FIFO_WRITE_ENABLE 0x01
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#define AGCSTS_TC_ENABLE 0x10000000 /* Added for transfer count enable bit */
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/* ADDON RELATED ADDITIONS */
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/* Constant */
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#define APCI3120_ENABLE_TRANSFER_ADD_ON_LOW 0x00
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#define APCI3120_ENABLE_TRANSFER_ADD_ON_HIGH 0x1200
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#define APCI3120_A2P_FIFO_MANAGEMENT 0x04000400L
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#define APCI3120_AMWEN_ENABLE 0x02
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#define APCI3120_A2P_FIFO_WRITE_ENABLE 0x01
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#define APCI3120_FIFO_ADVANCE_ON_BYTE_2 0x20000000L
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#define APCI3120_ENABLE_WRITE_TC_INT 0x00004000L
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#define APCI3120_CLEAR_WRITE_TC_INT 0x00040000L
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#define APCI3120_DISABLE_AMWEN_AND_A2P_FIFO_WRITE 0x0
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#define APCI3120_DISABLE_BUS_MASTER_ADD_ON 0x0
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#define APCI3120_DISABLE_BUS_MASTER_PCI 0x0
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/* ADD_ON ::: this needed since apci supports 16 bit interface to add on */
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#define APCI3120_ADD_ON_AGCSTS_LOW 0x3C
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#define APCI3120_ADD_ON_AGCSTS_HIGH APCI3120_ADD_ON_AGCSTS_LOW + 2
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#define APCI3120_ADD_ON_MWAR_LOW 0x24
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#define APCI3120_ADD_ON_MWAR_HIGH APCI3120_ADD_ON_MWAR_LOW + 2
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#define APCI3120_ADD_ON_MWTC_LOW 0x058
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#define APCI3120_ADD_ON_MWTC_HIGH APCI3120_ADD_ON_MWTC_LOW + 2
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/* AMCC */
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#define APCI3120_AMCC_OP_MCSR 0x3C
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#define APCI3120_AMCC_OP_REG_INTCSR 0x38
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/*******from here all upward definitions are added by sarath */
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/****************************************************************************/
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/* AMCC Operation Register Offsets - PCI */
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/****************************************************************************/
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#define AMCC_OP_REG_OMB1 0x00
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#define AMCC_OP_REG_OMB2 0x04
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#define AMCC_OP_REG_OMB3 0x08
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#define AMCC_OP_REG_OMB4 0x0c
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#define AMCC_OP_REG_IMB1 0x10
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#define AMCC_OP_REG_IMB2 0x14
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#define AMCC_OP_REG_IMB3 0x18
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#define AMCC_OP_REG_IMB4 0x1c
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#define AMCC_OP_REG_FIFO 0x20
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#define AMCC_OP_REG_MWAR 0x24
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#define AMCC_OP_REG_MWTC 0x28
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#define AMCC_OP_REG_MRAR 0x2c
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#define AMCC_OP_REG_MRTC 0x30
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#define AMCC_OP_REG_MBEF 0x34
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#define AMCC_OP_REG_INTCSR 0x38
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#define AMCC_OP_REG_INTCSR_SRC (AMCC_OP_REG_INTCSR + 2) /* int source */
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#define AMCC_OP_REG_INTCSR_FEC (AMCC_OP_REG_INTCSR + 3) /* FIFO ctrl */
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#define AMCC_OP_REG_MCSR 0x3c
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#define AMCC_OP_REG_MCSR_NVDATA (AMCC_OP_REG_MCSR + 2) /* Data in byte 2 */
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#define AMCC_OP_REG_MCSR_NVCMD (AMCC_OP_REG_MCSR + 3) /* Command in byte 3 */
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#define AMCC_FIFO_DEPTH_DWORD 8
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#define AMCC_FIFO_DEPTH_BYTES (8 * sizeof (u32))
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/****************************************************************************/
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/* AMCC Operation Registers Size - PCI */
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/****************************************************************************/
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#define AMCC_OP_REG_SIZE 64 /* in bytes */
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/****************************************************************************/
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/* AMCC Operation Register Offsets - Add-on */
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/****************************************************************************/
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#define AMCC_OP_REG_AIMB1 0x00
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#define AMCC_OP_REG_AIMB2 0x04
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#define AMCC_OP_REG_AIMB3 0x08
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#define AMCC_OP_REG_AIMB4 0x0c
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#define AMCC_OP_REG_AOMB1 0x10
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#define AMCC_OP_REG_AOMB2 0x14
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#define AMCC_OP_REG_AOMB3 0x18
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#define AMCC_OP_REG_AOMB4 0x1c
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#define AMCC_OP_REG_AFIFO 0x20
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#define AMCC_OP_REG_AMWAR 0x24
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#define AMCC_OP_REG_APTA 0x28
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#define AMCC_OP_REG_APTD 0x2c
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#define AMCC_OP_REG_AMRAR 0x30
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#define AMCC_OP_REG_AMBEF 0x34
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#define AMCC_OP_REG_AINT 0x38
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#define AMCC_OP_REG_AGCSTS 0x3c
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#define AMCC_OP_REG_AMWTC 0x58
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#define AMCC_OP_REG_AMRTC 0x5c
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/****************************************************************************/
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/* AMCC - Add-on General Control/Status Register */
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/****************************************************************************/
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#define AGCSTS_CONTROL_MASK 0xfffff000
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#define AGCSTS_NV_ACC_MASK 0xe0000000
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#define AGCSTS_RESET_MASK 0x0e000000
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#define AGCSTS_NV_DA_MASK 0x00ff0000
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#define AGCSTS_BIST_MASK 0x0000f000
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#define AGCSTS_STATUS_MASK 0x000000ff
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#define AGCSTS_TCZERO_MASK 0x000000c0
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#define AGCSTS_FIFO_ST_MASK 0x0000003f
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#define AGCSTS_RESET_MBFLAGS 0x08000000
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#define AGCSTS_RESET_P2A_FIFO 0x04000000
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#define AGCSTS_RESET_A2P_FIFO 0x02000000
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#define AGCSTS_RESET_FIFOS (AGCSTS_RESET_A2P_FIFO | AGCSTS_RESET_P2A_FIFO)
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#define AGCSTS_A2P_TCOUNT 0x00000080
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#define AGCSTS_P2A_TCOUNT 0x00000040
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#define AGCSTS_FS_P2A_EMPTY 0x00000020
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#define AGCSTS_FS_P2A_HALF 0x00000010
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#define AGCSTS_FS_P2A_FULL 0x00000008
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#define AGCSTS_FS_A2P_EMPTY 0x00000004
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#define AGCSTS_FS_A2P_HALF 0x00000002
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#define AGCSTS_FS_A2P_FULL 0x00000001
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/****************************************************************************/
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/* AMCC - Add-on Interrupt Control/Status Register */
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/****************************************************************************/
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#define AINT_INT_MASK 0x00ff0000
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#define AINT_SEL_MASK 0x0000ffff
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#define AINT_IS_ENSEL_MASK 0x00001f1f
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#define AINT_INT_ASSERTED 0x00800000
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#define AINT_BM_ERROR 0x00200000
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#define AINT_BIST_INT 0x00100000
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#define AINT_RT_COMPLETE 0x00080000
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#define AINT_WT_COMPLETE 0x00040000
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#define AINT_OUT_MB_INT 0x00020000
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#define AINT_IN_MB_INT 0x00010000
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#define AINT_READ_COMPL 0x00008000
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#define AINT_WRITE_COMPL 0x00004000
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#define AINT_OMB_ENABLE 0x00001000
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#define AINT_OMB_SELECT 0x00000c00
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#define AINT_OMB_BYTE 0x00000300
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#define AINT_IMB_ENABLE 0x00000010
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#define AINT_IMB_SELECT 0x0000000c
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#define AINT_IMB_BYTE 0x00000003
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/* Enable Bus Mastering */
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#define EN_A2P_TRANSFERS 0x00000400
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/* FIFO Flag Reset */
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#define RESET_A2P_FLAGS 0x04000000L
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/* FIFO Relative Priority */
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#define A2P_HI_PRIORITY 0x00000100L
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/* Identify Interrupt Sources */
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#define ANY_S593X_INT 0x00800000L
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#define READ_TC_INT 0x00080000L
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#define WRITE_TC_INT 0x00040000L
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#define IN_MB_INT 0x00020000L
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#define MASTER_ABORT_INT 0x00100000L
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#define TARGET_ABORT_INT 0x00200000L
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#define BUS_MASTER_INT 0x00200000L
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/****************************************************************************/
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struct pcilst_struct {
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struct pcilst_struct *next;
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int used;
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struct pci_dev *pcidev;
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unsigned short vendor;
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unsigned short device;
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unsigned int master;
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unsigned char pci_bus;
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unsigned char pci_slot;
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unsigned char pci_func;
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unsigned int io_addr[5];
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unsigned int irq;
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};
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struct pcilst_struct *amcc_devices; /* ptr to root list of all amcc devices */
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/****************************************************************************/
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void v_pci_card_list_init(unsigned short pci_vendor, char display);
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void v_pci_card_list_cleanup(unsigned short pci_vendor);
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struct pcilst_struct *ptr_find_free_pci_card_by_device(unsigned short vendor_id,
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unsigned short
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device_id);
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int i_find_free_pci_card_by_position(unsigned short vendor_id,
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unsigned short device_id,
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unsigned short pci_bus,
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unsigned short pci_slot,
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struct pcilst_struct **card);
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struct pcilst_struct *ptr_select_and_alloc_pci_card(unsigned short vendor_id,
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unsigned short device_id,
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unsigned short pci_bus,
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unsigned short pci_slot);
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int i_pci_card_alloc(struct pcilst_struct *amcc);
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int i_pci_card_free(struct pcilst_struct *amcc);
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void v_pci_card_list_display(void);
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int i_pci_card_data(struct pcilst_struct *amcc,
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unsigned char *pci_bus, unsigned char *pci_slot,
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unsigned char *pci_func, unsigned short *io_addr,
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unsigned short *irq, unsigned short *master);
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/****************************************************************************/
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/* build list of amcc cards in this system */
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void v_pci_card_list_init(unsigned short pci_vendor, char display)
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{
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struct pci_dev *pcidev;
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struct pcilst_struct *amcc, *last;
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int i;
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amcc_devices = NULL;
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last = NULL;
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pci_for_each_dev(pcidev) {
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if (pcidev->vendor == pci_vendor) {
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amcc = kmalloc(sizeof(*amcc), GFP_KERNEL);
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memset(amcc, 0, sizeof(*amcc));
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amcc->pcidev = pcidev;
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if (last) {
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last->next = amcc;
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} else {
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amcc_devices = amcc;
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}
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last = amcc;
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amcc->vendor = pcidev->vendor;
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amcc->device = pcidev->device;
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#if 0
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amcc->master = pcidev->master; /* how get this information under 2.4 kernels? */
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#endif
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amcc->pci_bus = pcidev->bus->number;
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amcc->pci_slot = PCI_SLOT(pcidev->devfn);
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amcc->pci_func = PCI_FUNC(pcidev->devfn);
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for (i = 0; i < 5; i++)
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amcc->io_addr[i] =
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pcidev->resource[i].start & ~3UL;
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amcc->irq = pcidev->irq;
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}
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}
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if (display)
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v_pci_card_list_display();
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}
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/****************************************************************************/
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/* free up list of amcc cards in this system */
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void v_pci_card_list_cleanup(unsigned short pci_vendor)
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{
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struct pcilst_struct *amcc, *next;
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for (amcc = amcc_devices; amcc; amcc = next) {
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next = amcc->next;
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kfree(amcc);
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}
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amcc_devices = NULL;
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}
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/****************************************************************************/
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/* find first unused card with this device_id */
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struct pcilst_struct *ptr_find_free_pci_card_by_device(unsigned short vendor_id,
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unsigned short device_id)
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{
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struct pcilst_struct *amcc, *next;
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for (amcc = amcc_devices; amcc; amcc = next) {
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next = amcc->next;
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if ((!amcc->used) && (amcc->device == device_id)
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&& (amcc->vendor == vendor_id))
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return amcc;
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}
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return NULL;
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}
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/****************************************************************************/
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/* find card on requested position */
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int i_find_free_pci_card_by_position(unsigned short vendor_id,
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unsigned short device_id,
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unsigned short pci_bus,
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unsigned short pci_slot,
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struct pcilst_struct **card)
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{
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struct pcilst_struct *amcc, *next;
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*card = NULL;
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for (amcc = amcc_devices; amcc; amcc = next) {
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next = amcc->next;
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if ((amcc->vendor == vendor_id) && (amcc->device == device_id)
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&& (amcc->pci_bus == pci_bus)
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&& (amcc->pci_slot == pci_slot)) {
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if (!(amcc->used)) {
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*card = amcc;
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return 0; /* ok, card is found */
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} else {
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printk
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(" - \nCard on requested position is used b:s %d:%d!\n",
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pci_bus, pci_slot);
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return 2; /* card exist but is used */
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}
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}
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}
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return 1; /* no card found */
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}
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/****************************************************************************/
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/* mark card as used */
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int i_pci_card_alloc(struct pcilst_struct *amcc)
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{
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if (!amcc)
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return -1;
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if (amcc->used)
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return 1;
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amcc->used = 1;
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return 0;
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}
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/****************************************************************************/
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/* mark card as free */
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int i_pci_card_free(struct pcilst_struct *amcc)
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{
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if (!amcc)
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return -1;
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if (!amcc->used)
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return 1;
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amcc->used = 0;
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return 0;
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}
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/****************************************************************************/
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/* display list of found cards */
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void v_pci_card_list_display(void)
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{
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struct pcilst_struct *amcc, *next;
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printk("List of pci cards\n");
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printk("bus:slot:func vendor device master io_amcc io_daq irq used\n");
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for (amcc = amcc_devices; amcc; amcc = next) {
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next = amcc->next;
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printk
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("%2d %2d %2d 0x%4x 0x%4x %3s 0x%4x 0x%4x %2d %2d\n",
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amcc->pci_bus, amcc->pci_slot, amcc->pci_func,
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amcc->vendor, amcc->device, amcc->master ? "yes" : "no",
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amcc->io_addr[0], amcc->io_addr[2], amcc->irq, amcc->used);
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}
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}
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/****************************************************************************/
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/* return all card information for driver */
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int i_pci_card_data(struct pcilst_struct *amcc,
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unsigned char *pci_bus, unsigned char *pci_slot,
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unsigned char *pci_func, unsigned short *io_addr,
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unsigned short *irq, unsigned short *master)
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{
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int i;
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if (!amcc)
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return -1;
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*pci_bus = amcc->pci_bus;
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*pci_slot = amcc->pci_slot;
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*pci_func = amcc->pci_func;
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for (i = 0; i < 5; i++)
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io_addr[i] = amcc->io_addr[i];
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*irq = amcc->irq;
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*master = amcc->master;
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return 0;
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}
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/****************************************************************************/
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/* select and alloc card */
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struct pcilst_struct *ptr_select_and_alloc_pci_card(unsigned short vendor_id,
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unsigned short device_id,
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unsigned short pci_bus,
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unsigned short pci_slot)
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{
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struct pcilst_struct *card;
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if ((pci_bus < 1) & (pci_slot < 1)) { /* use autodetection */
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card = ptr_find_free_pci_card_by_device(vendor_id, device_id);
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if (card == NULL) {
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printk(" - Unused card not found in system!\n");
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return NULL;
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}
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} else {
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switch (i_find_free_pci_card_by_position(vendor_id, device_id,
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pci_bus, pci_slot,
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&card)) {
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case 1:
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printk
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(" - Card not found on requested position b:s %d:%d!\n",
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pci_bus, pci_slot);
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return NULL;
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case 2:
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printk
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(" - Card on requested position is used b:s %d:%d!\n",
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pci_bus, pci_slot);
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return NULL;
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}
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}
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if (i_pci_card_alloc(card) != 0) {
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printk(" - Can't allocate card!\n");
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return NULL;
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}
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return card;
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}
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#endif
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