379 lines
9.2 KiB
C
379 lines
9.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Marvel systems use the IO7 I/O chip provides PCI/PCIX/AGP access
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*
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* This file is based on:
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*
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* Marvel / EV7 System Programmer's Manual
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* Revision 1.00
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* 14 May 2001
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*/
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#ifndef __ALPHA_MARVEL__H__
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#define __ALPHA_MARVEL__H__
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#include <linux/types.h>
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#include <linux/spinlock.h>
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#include <asm/compiler.h>
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#define MARVEL_MAX_PIDS 32 /* as long as we rely on 43-bit superpage */
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#define MARVEL_IRQ_VEC_PE_SHIFT (10)
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#define MARVEL_IRQ_VEC_IRQ_MASK ((1 << MARVEL_IRQ_VEC_PE_SHIFT) - 1)
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#define MARVEL_NR_IRQS \
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(16 + (MARVEL_MAX_PIDS * (1 << MARVEL_IRQ_VEC_PE_SHIFT)))
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/*
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* EV7 RBOX Registers
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*/
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typedef struct {
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volatile unsigned long csr __attribute__((aligned(16)));
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} ev7_csr;
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typedef struct {
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ev7_csr RBOX_CFG; /* 0x0000 */
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ev7_csr RBOX_NSVC;
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ev7_csr RBOX_EWVC;
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ev7_csr RBOX_WHAMI;
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ev7_csr RBOX_TCTL; /* 0x0040 */
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ev7_csr RBOX_INT;
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ev7_csr RBOX_IMASK;
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ev7_csr RBOX_IREQ;
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ev7_csr RBOX_INTQ; /* 0x0080 */
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ev7_csr RBOX_INTA;
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ev7_csr RBOX_IT;
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ev7_csr RBOX_SCRATCH1;
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ev7_csr RBOX_SCRATCH2; /* 0x00c0 */
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ev7_csr RBOX_L_ERR;
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} ev7_csrs;
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/*
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* EV7 CSR addressing macros
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*/
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#define EV7_MASK40(addr) ((addr) & ((1UL << 41) - 1))
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#define EV7_KERN_ADDR(addr) ((void *)(IDENT_ADDR | EV7_MASK40(addr)))
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#define EV7_PE_MASK 0x1ffUL /* 9 bits ( 256 + mem/io ) */
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#define EV7_IPE(pe) ((~((long)(pe)) & EV7_PE_MASK) << 35)
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#define EV7_CSR_PHYS(pe, off) (EV7_IPE(pe) | (0x7FFCUL << 20) | (off))
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#define EV7_CSRS_PHYS(pe) (EV7_CSR_PHYS(pe, 0UL))
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#define EV7_CSR_KERN(pe, off) (EV7_KERN_ADDR(EV7_CSR_PHYS(pe, off)))
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#define EV7_CSRS_KERN(pe) (EV7_KERN_ADDR(EV7_CSRS_PHYS(pe)))
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#define EV7_CSR_OFFSET(name) ((unsigned long)&((ev7_csrs *)NULL)->name.csr)
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/*
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* IO7 registers
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*/
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typedef struct {
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volatile unsigned long csr __attribute__((aligned(64)));
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} io7_csr;
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typedef struct {
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/* I/O Port Control Registers */
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io7_csr POx_CTRL; /* 0x0000 */
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io7_csr POx_CACHE_CTL;
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io7_csr POx_TIMER;
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io7_csr POx_IO_ADR_EXT;
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io7_csr POx_MEM_ADR_EXT; /* 0x0100 */
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io7_csr POx_XCAL_CTRL;
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io7_csr rsvd1[2]; /* ?? spec doesn't show 0x180 */
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io7_csr POx_DM_SOURCE; /* 0x0200 */
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io7_csr POx_DM_DEST;
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io7_csr POx_DM_SIZE;
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io7_csr POx_DM_CTRL;
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io7_csr rsvd2[4]; /* 0x0300 */
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/* AGP Control Registers -- port 3 only */
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io7_csr AGP_CAP_ID; /* 0x0400 */
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io7_csr AGP_STAT;
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io7_csr AGP_CMD;
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io7_csr rsvd3;
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/* I/O Port Monitor Registers */
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io7_csr POx_MONCTL; /* 0x0500 */
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io7_csr POx_CTRA;
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io7_csr POx_CTRB;
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io7_csr POx_CTR56;
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io7_csr POx_SCRATCH; /* 0x0600 */
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io7_csr POx_XTRA_A;
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io7_csr POx_XTRA_TS;
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io7_csr POx_XTRA_Z;
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io7_csr rsvd4; /* 0x0700 */
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io7_csr POx_THRESHA;
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io7_csr POx_THRESHB;
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io7_csr rsvd5[33];
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/* System Address Space Window Control Registers */
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io7_csr POx_WBASE[4]; /* 0x1000 */
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io7_csr POx_WMASK[4];
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io7_csr POx_TBASE[4];
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io7_csr POx_SG_TBIA;
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io7_csr POx_MSI_WBASE;
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io7_csr rsvd6[50];
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/* I/O Port Error Registers */
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io7_csr POx_ERR_SUM;
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io7_csr POx_FIRST_ERR;
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io7_csr POx_MSK_HEI;
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io7_csr POx_TLB_ERR;
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io7_csr POx_SPL_COMPLT;
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io7_csr POx_TRANS_SUM;
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io7_csr POx_FRC_PCI_ERR;
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io7_csr POx_MULT_ERR;
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io7_csr rsvd7[8];
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/* I/O Port End of Interrupt Registers */
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io7_csr EOI_DAT;
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io7_csr rsvd8[7];
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io7_csr POx_IACK_SPECIAL;
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io7_csr rsvd9[103];
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} io7_ioport_csrs;
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typedef struct {
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io7_csr IO_ASIC_REV; /* 0x30.0000 */
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io7_csr IO_SYS_REV;
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io7_csr SER_CHAIN3;
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io7_csr PO7_RST1;
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io7_csr PO7_RST2; /* 0x30.0100 */
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io7_csr POx_RST[4];
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io7_csr IO7_DWNH;
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io7_csr IO7_MAF;
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io7_csr IO7_MAF_TO;
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io7_csr IO7_ACC_CLUMP; /* 0x30.0300 */
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io7_csr IO7_PMASK;
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io7_csr IO7_IOMASK;
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io7_csr IO7_UPH;
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io7_csr IO7_UPH_TO; /* 0x30.0400 */
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io7_csr RBX_IREQ_OFF;
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io7_csr RBX_INTA_OFF;
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io7_csr INT_RTY;
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io7_csr PO7_MONCTL; /* 0x30.0500 */
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io7_csr PO7_CTRA;
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io7_csr PO7_CTRB;
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io7_csr PO7_CTR56;
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io7_csr PO7_SCRATCH; /* 0x30.0600 */
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io7_csr PO7_XTRA_A;
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io7_csr PO7_XTRA_TS;
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io7_csr PO7_XTRA_Z;
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io7_csr PO7_PMASK; /* 0x30.0700 */
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io7_csr PO7_THRESHA;
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io7_csr PO7_THRESHB;
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io7_csr rsvd1[97];
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io7_csr PO7_ERROR_SUM; /* 0x30.2000 */
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io7_csr PO7_BHOLE_MASK;
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io7_csr PO7_HEI_MSK;
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io7_csr PO7_CRD_MSK;
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io7_csr PO7_UNCRR_SYM; /* 0x30.2100 */
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io7_csr PO7_CRRCT_SYM;
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io7_csr PO7_ERR_PKT[2];
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io7_csr PO7_UGBGE_SYM; /* 0x30.2200 */
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io7_csr rsbv2[887];
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io7_csr PO7_LSI_CTL[128]; /* 0x31.0000 */
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io7_csr rsvd3[123];
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io7_csr HLT_CTL; /* 0x31.3ec0 */
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io7_csr HPI_CTL; /* 0x31.3f00 */
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io7_csr CRD_CTL;
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io7_csr STV_CTL;
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io7_csr HEI_CTL;
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io7_csr PO7_MSI_CTL[16]; /* 0x31.4000 */
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io7_csr rsvd4[240];
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/*
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* Interrupt Diagnostic / Test
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*/
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struct {
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io7_csr INT_PND;
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io7_csr INT_CLR;
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io7_csr INT_EOI;
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io7_csr rsvd[29];
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} INT_DIAG[4];
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io7_csr rsvd5[125]; /* 0x31.a000 */
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io7_csr MISC_PND; /* 0x31.b800 */
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io7_csr rsvd6[31];
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io7_csr MSI_PND[16]; /* 0x31.c000 */
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io7_csr rsvd7[16];
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io7_csr MSI_CLR[16]; /* 0x31.c800 */
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} io7_port7_csrs;
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/*
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* IO7 DMA Window Base register (POx_WBASEx)
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*/
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#define wbase_m_ena 0x1
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#define wbase_m_sg 0x2
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#define wbase_m_dac 0x4
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#define wbase_m_addr 0xFFF00000
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union IO7_POx_WBASE {
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struct {
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unsigned ena : 1; /* <0> */
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unsigned sg : 1; /* <1> */
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unsigned dac : 1; /* <2> -- window 3 only */
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unsigned rsvd1 : 17;
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unsigned addr : 12; /* <31:20> */
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unsigned rsvd2 : 32;
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} bits;
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unsigned as_long[2];
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unsigned as_quad;
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};
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/*
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* IO7 IID (Interrupt IDentifier) format
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*
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* For level-sensative interrupts, int_num is encoded as:
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*
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* bus/port slot/device INTx
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* <7:5> <4:2> <1:0>
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*/
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union IO7_IID {
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struct {
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unsigned int_num : 9; /* <8:0> */
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unsigned tpu_mask : 4; /* <12:9> rsvd */
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unsigned msi : 1; /* 13 */
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unsigned ipe : 10; /* <23:14> */
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unsigned long rsvd : 40;
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} bits;
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unsigned int as_long[2];
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unsigned long as_quad;
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};
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/*
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* IO7 addressing macros
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*/
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#define IO7_KERN_ADDR(addr) (EV7_KERN_ADDR(addr))
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#define IO7_PORT_MASK 0x07UL /* 3 bits of port */
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#define IO7_IPE(pe) (EV7_IPE(pe))
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#define IO7_IPORT(port) ((~((long)(port)) & IO7_PORT_MASK) << 32)
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#define IO7_HOSE(pe, port) (IO7_IPE(pe) | IO7_IPORT(port))
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#define IO7_MEM_PHYS(pe, port) (IO7_HOSE(pe, port) | 0x00000000UL)
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#define IO7_CONF_PHYS(pe, port) (IO7_HOSE(pe, port) | 0xFE000000UL)
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#define IO7_IO_PHYS(pe, port) (IO7_HOSE(pe, port) | 0xFF000000UL)
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#define IO7_CSR_PHYS(pe, port, off) \
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(IO7_HOSE(pe, port) | 0xFF800000UL | (off))
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#define IO7_CSRS_PHYS(pe, port) (IO7_CSR_PHYS(pe, port, 0UL))
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#define IO7_PORT7_CSRS_PHYS(pe) (IO7_CSR_PHYS(pe, 7, 0x300000UL))
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#define IO7_MEM_KERN(pe, port) (IO7_KERN_ADDR(IO7_MEM_PHYS(pe, port)))
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#define IO7_CONF_KERN(pe, port) (IO7_KERN_ADDR(IO7_CONF_PHYS(pe, port)))
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#define IO7_IO_KERN(pe, port) (IO7_KERN_ADDR(IO7_IO_PHYS(pe, port)))
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#define IO7_CSR_KERN(pe, port, off) (IO7_KERN_ADDR(IO7_CSR_PHYS(pe,port,off)))
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#define IO7_CSRS_KERN(pe, port) (IO7_KERN_ADDR(IO7_CSRS_PHYS(pe, port)))
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#define IO7_PORT7_CSRS_KERN(pe) (IO7_KERN_ADDR(IO7_PORT7_CSRS_PHYS(pe)))
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#define IO7_PLL_RNGA(pll) (((pll) >> 3) & 0x7)
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#define IO7_PLL_RNGB(pll) (((pll) >> 6) & 0x7)
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#define IO7_MEM_SPACE (2UL * 1024 * 1024 * 1024) /* 2GB MEM */
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#define IO7_IO_SPACE (8UL * 1024 * 1024) /* 8MB I/O */
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/*
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* Offset between ram physical addresses and pci64 DAC addresses
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*/
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#define IO7_DAC_OFFSET (1UL << 49)
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/*
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* This is needed to satisify the IO() macro used in initializing the machvec
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*/
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#define MARVEL_IACK_SC \
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((unsigned long) \
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(&(((io7_ioport_csrs *)IO7_CSRS_KERN(0, 0))->POx_IACK_SPECIAL)))
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#ifdef __KERNEL__
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/*
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* IO7 structs
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*/
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#define IO7_NUM_PORTS 4
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#define IO7_AGP_PORT 3
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struct io7_port {
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struct io7 *io7;
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struct pci_controller *hose;
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int enabled;
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unsigned int port;
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io7_ioport_csrs *csrs;
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unsigned long saved_wbase[4];
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unsigned long saved_wmask[4];
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unsigned long saved_tbase[4];
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};
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struct io7 {
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struct io7 *next;
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unsigned int pe;
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io7_port7_csrs *csrs;
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struct io7_port ports[IO7_NUM_PORTS];
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raw_spinlock_t irq_lock;
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};
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#ifndef __EXTERN_INLINE
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# define __EXTERN_INLINE extern inline
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# define __IO_EXTERN_INLINE
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#endif
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/*
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* I/O functions. All access through linear space.
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*/
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/*
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* Memory functions. All accesses through linear space.
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*/
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#define vucp volatile unsigned char __force *
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#define vusp volatile unsigned short __force *
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extern unsigned int marvel_ioread8(void __iomem *);
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extern void marvel_iowrite8(u8 b, void __iomem *);
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__EXTERN_INLINE unsigned int marvel_ioread16(void __iomem *addr)
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{
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return __kernel_ldwu(*(vusp)addr);
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}
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__EXTERN_INLINE void marvel_iowrite16(u16 b, void __iomem *addr)
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{
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__kernel_stw(b, *(vusp)addr);
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}
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extern void __iomem *marvel_ioremap(unsigned long addr, unsigned long size);
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extern void marvel_iounmap(volatile void __iomem *addr);
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extern void __iomem *marvel_ioportmap (unsigned long addr);
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__EXTERN_INLINE int marvel_is_ioaddr(unsigned long addr)
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{
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return (addr >> 40) & 1;
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}
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extern int marvel_is_mmio(const volatile void __iomem *);
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#undef vucp
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#undef vusp
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#undef __IO_PREFIX
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#define __IO_PREFIX marvel
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#define marvel_trivial_rw_bw 1
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#define marvel_trivial_rw_lq 1
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#define marvel_trivial_io_bw 0
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#define marvel_trivial_io_lq 1
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#define marvel_trivial_iounmap 0
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#include <asm/io_trivial.h>
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#ifdef __IO_EXTERN_INLINE
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# undef __EXTERN_INLINE
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# undef __IO_EXTERN_INLINE
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#endif
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#endif /* __KERNEL__ */
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#endif /* __ALPHA_MARVEL__H__ */
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