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freebsd-skq/sys/dev/ppc/ppcreg.h
jhb 879505d4df Add locking to ppc and ppbus and mark the whole lot MPSAFE: 
- To avoid having a bunch of locks that end up always getting acquired as
  a group, give each ppc(4) device a mutex which it shares with all the
  child devices including ppbus(4), lpt(4), plip(4), etc.  This mutex
  is then used for all the locking.
- Rework the interrupt handling stuff yet again.  Now ppbus drivers setup
  their interrupt handler during attach and tear it down during detach
  like most other drivers.  ppbus(4) only invokes the interrupt handler
  of the device that currently owns the bus (if any) when an interrupt
  occurs, however.  Also, interrupt handlers in general now accept their
  softc pointers as their argument rather than the device_t.  Another
  feature of the ppbus interrupt handlers is that they are called with
  the parent ppc device's lock already held.  This minimizes the number
  of lock operations during an interrupt.
- Mark plip(4), lpt(4), pcfclock(4), ppi(4), vpo(4) MPSAFE.
- lpbb(4) uses the ppc lock instead of Giant.
- Other plip(4) changes:
  - Add a mutex to protect the global tables in plip(4) and free them on
    module unload.
  - Add a detach routine.
  - Split out the init/stop code from the ioctl routine into separate
    functions.
- Other lpt(4) changes:
  - Use device_printf().
  - Use a dedicated callout for the lptout timer.
  - Allocate the I/O buffers at attach and detach rather than during
    open and close as this simplifies the locking at the cost of
    1024+32 bytes when the driver is attached.
- Other ppi(4) changes:
  - Use an sx lock to serialize open and close.
  - Remove unused HADBUS flag.
  - Add a detach routine.
  - Use a malloc'd buffer for each read and write to avoid races with
    concurrent read/write.
- Other pps(4) changes:
  - Use a callout rather than a callout handle with timeout().
  - Conform to the new ppbus requirements (regular mutex, non-filter
    interrupt handler).  pps(4) is probably going to have to become a
    standalone driver that doesn't use ppbus(4) to satisfy it's
    requirements for low latency as a result.
  - Use an sx lock to serialize open and close.
- Other vpo(4) changes:
  - Use the parent ppc device's lock to create the CAM sim instead of
    Giant.
- Other ppc(4) changes:
  - Fix ppc_isa's detach method to detach instead of calling attach.

Tested by:	  no one :-(
2009-01-21 23:10:06 +00:00

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/*-
* Copyright (c) 2001 Alcove - Nicolas Souchu
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*
*/
#ifndef __PPCREG_H
#define __PPCREG_H
#include <sys/_lock.h>
#include <sys/_mutex.h>
/*
* Parallel Port Chipset type.
*/
#define SMC_LIKE 0
#define SMC_37C665GT 1
#define SMC_37C666GT 2
#define NS_PC87332 3
#define NS_PC87306 4
#define INTEL_820191AA 5 /* XXX not implemented */
#define GENERIC 6
#define WINB_W83877F 7
#define WINB_W83877AF 8
#define WINB_UNKNOWN 9
#define NS_PC87334 10
#define SMC_37C935 11
#define NS_PC87303 12
/*
* Parallel Port Chipset Type. SMC versus GENERIC (others)
*/
#define PPC_TYPE_SMCLIKE 0
#define PPC_TYPE_GENERIC 1
/*
* Generic structure to hold parallel port chipset info.
*/
struct ppc_data {
device_t ppc_dev;
int ppc_model; /* chipset model if detected */
int ppc_type; /* generic or smclike chipset type */
int ppc_mode; /* chipset current mode */
int ppc_avm; /* chipset available modes */
int ppc_dtm; /* chipset detected modes */
#define PPC_IRQ_NONE 0x0
#define PPC_IRQ_nACK 0x1
#define PPC_IRQ_DMA 0x2
#define PPC_IRQ_FIFO 0x4
#define PPC_IRQ_nFAULT 0x8
int ppc_irqstat; /* remind irq settings */
#define PPC_DMA_INIT 0x01
#define PPC_DMA_STARTED 0x02
#define PPC_DMA_COMPLETE 0x03
#define PPC_DMA_INTERRUPTED 0x04
#define PPC_DMA_ERROR 0x05
int ppc_dmastat; /* dma state */
int ppc_dmachan; /* dma channel */
int ppc_dmaflags; /* dma transfer flags */
caddr_t ppc_dmaddr; /* buffer address */
u_int ppc_dmacnt; /* count of bytes sent with dma */
void (*ppc_dmadone)(struct ppc_data*);
#define PPC_PWORD_MASK 0x30
#define PPC_PWORD_16 0x00
#define PPC_PWORD_8 0x10
#define PPC_PWORD_32 0x20
char ppc_pword; /* PWord size */
short ppc_fifo; /* FIFO threshold */
short ppc_wthr; /* writeIntrThresold */
short ppc_rthr; /* readIntrThresold */
char *ppc_ptr; /* microseq current pointer */
int ppc_accum; /* microseq accumulator */
int ppc_base; /* parallel port base address */
int ppc_epp; /* EPP mode (1.7 or 1.9) */
int ppc_irq;
unsigned char ppc_flags;
device_t ppbus; /* parallel port chipset corresponding ppbus */
int rid_irq, rid_drq, rid_ioport;
struct resource *res_irq, *res_drq, *res_ioport;
void *intr_cookie;
ppc_intr_handler ppc_intr_hook;
void *ppc_intr_arg;
struct mtx ppc_lock;
};
#define PPC_LOCK(data) mtx_lock(&(data)->ppc_lock)
#define PPC_UNLOCK(data) mtx_unlock(&(data)->ppc_lock)
#define PPC_ASSERT_LOCKED(data) mtx_assert(&(data)->ppc_lock, MA_OWNED)
/*
* Parallel Port Chipset registers.
*/
#define PPC_SPP_DTR 0 /* SPP data register */
#define PPC_ECP_A_FIFO 0 /* ECP Address fifo register */
#define PPC_SPP_STR 1 /* SPP status register */
#define PPC_SPP_CTR 2 /* SPP control register */
#define PPC_EPP_ADDR 3 /* EPP address register (8 bit) */
#define PPC_EPP_DATA 4 /* EPP data register (8, 16 or 32 bit) */
#if defined(__i386__) && defined(PC98)
#define PPC_1284_ENABLE 0x09 /* IEEE STD 1284 Enable register */
#define PPC_ECP_D_FIFO 0x0c /* ECP Data fifo register */
#define PPC_ECP_CNFGA 0x0c /* Configuration register A */
#define PPC_ECP_CNFGB 0x0d /* Configuration register B */
#define PPC_ECP_ECR 0x0e /* ECP extended control register */
#else
#define PPC_ECP_D_FIFO 0x400 /* ECP Data fifo register */
#define PPC_ECP_CNFGA 0x400 /* Configuration register A */
#define PPC_ECP_CNFGB 0x401 /* Configuration register B */
#define PPC_ECP_ECR 0x402 /* ECP extended control register */
#endif
#define PPC_FIFO_EMPTY 0x1 /* ecr register - bit 0 */
#define PPC_FIFO_FULL 0x2 /* ecr register - bit 1 */
#define PPC_SERVICE_INTR 0x4 /* ecr register - bit 2 */
#define PPC_ENABLE_DMA 0x8 /* ecr register - bit 3 */
#define PPC_nFAULT_INTR 0x10 /* ecr register - bit 4 */
#define PPC_ECR_STD 0x0
#define PPC_ECR_PS2 0x20
#define PPC_ECR_FIFO 0x40
#define PPC_ECR_ECP 0x60
#define PPC_ECR_EPP 0x80
#define PPC_DISABLE_INTR (PPC_SERVICE_INTR | PPC_nFAULT_INTR)
#define PPC_ECR_RESET (PPC_ECR_PS2 | PPC_DISABLE_INTR)
#define r_dtr(ppc) (bus_read_1((ppc)->res_ioport, PPC_SPP_DTR))
#define r_str(ppc) (bus_read_1((ppc)->res_ioport, PPC_SPP_STR))
#define r_ctr(ppc) (bus_read_1((ppc)->res_ioport, PPC_SPP_CTR))
#define r_epp_A(ppc) (bus_read_1((ppc)->res_ioport, PPC_EPP_ADDR))
#define r_epp_D(ppc) (bus_read_1((ppc)->res_ioport, PPC_EPP_DATA))
#define r_cnfgA(ppc) (bus_read_1((ppc)->res_ioport, PPC_ECP_CNFGA))
#define r_cnfgB(ppc) (bus_read_1((ppc)->res_ioport, PPC_ECP_CNFGB))
#define r_ecr(ppc) (bus_read_1((ppc)->res_ioport, PPC_ECP_ECR))
#define r_fifo(ppc) (bus_read_1((ppc)->res_ioport, PPC_ECP_D_FIFO))
#define w_dtr(ppc, byte) (bus_write_1((ppc)->res_ioport, PPC_SPP_DTR, byte))
#define w_str(ppc, byte) (bus_write_1((ppc)->res_ioport, PPC_SPP_STR, byte))
#define w_ctr(ppc, byte) (bus_write_1((ppc)->res_ioport, PPC_SPP_CTR, byte))
#define w_epp_A(ppc, byte) (bus_write_1((ppc)->res_ioport, PPC_EPP_ADDR, byte))
#define w_epp_D(ppc, byte) (bus_write_1((ppc)->res_ioport, PPC_EPP_DATA, byte))
#define w_ecr(ppc, byte) (bus_write_1((ppc)->res_ioport, PPC_ECP_ECR, byte))
#define w_fifo(ppc, byte) (bus_write_1((ppc)->res_ioport, PPC_ECP_D_FIFO, byte))
/*
* Register defines for the PC873xx parts
*/
#define PC873_FER 0x00
#define PC873_PPENABLE (1<<0)
#define PC873_FAR 0x01
#define PC873_PTR 0x02
#define PC873_CFGLOCK (1<<6)
#define PC873_EPPRDIR (1<<7)
#define PC873_EXTENDED (1<<7)
#define PC873_LPTBIRQ7 (1<<3)
#define PC873_FCR 0x03
#define PC873_ZWS (1<<5)
#define PC873_ZWSPWDN (1<<6)
#define PC873_PCR 0x04
#define PC873_EPPEN (1<<0)
#define PC873_EPP19 (1<<1)
#define PC873_ECPEN (1<<2)
#define PC873_ECPCLK (1<<3)
#define PC873_PMC 0x06
#define PC873_TUP 0x07
#define PC873_SID 0x08
#define PC873_PNP0 0x1b
#define PC873_PNP1 0x1c
#define PC873_LPTBA 0x19
/*
* Register defines for the SMC FDC37C66xGT parts
*/
/* Init codes */
#define SMC665_iCODE 0x55
#define SMC666_iCODE 0x44
/* Base configuration ports */
#define SMC66x_CSR 0x3F0
#define SMC666_CSR 0x370 /* hard-configured value for 666 */
/* Bits */
#define SMC_CR1_ADDR 0x3 /* bit 0 and 1 */
#define SMC_CR1_MODE (1<<3) /* bit 3 */
#define SMC_CR4_EMODE 0x3 /* bits 0 and 1 */
#define SMC_CR4_EPPTYPE (1<<6) /* bit 6 */
/* Extended modes */
#define SMC_SPP 0x0 /* SPP */
#define SMC_EPPSPP 0x1 /* EPP and SPP */
#define SMC_ECP 0x2 /* ECP */
#define SMC_ECPEPP 0x3 /* ECP and EPP */
/*
* Register defines for the SMC FDC37C935 parts
*/
/* Configuration ports */
#define SMC935_CFG 0x370
#define SMC935_IND 0x370
#define SMC935_DAT 0x371
/* Registers */
#define SMC935_LOGDEV 0x7
#define SMC935_ID 0x20
#define SMC935_PORTHI 0x60
#define SMC935_PORTLO 0x61
#define SMC935_PPMODE 0xf0
/* Parallel port modes */
#define SMC935_SPP 0x38 + 0
#define SMC935_EPP19SPP 0x38 + 1
#define SMC935_ECP 0x38 + 2
#define SMC935_ECPEPP19 0x38 + 3
#define SMC935_CENT 0x38 + 4
#define SMC935_EPP17SPP 0x38 + 5
#define SMC935_UNUSED 0x38 + 6
#define SMC935_ECPEPP17 0x38 + 7
/*
* Register defines for the Winbond W83877F parts
*/
#define WINB_W83877F_ID 0xa
#define WINB_W83877AF_ID 0xb
/* Configuration bits */
#define WINB_HEFERE (1<<5) /* CROC bit 5 */
#define WINB_HEFRAS (1<<0) /* CR16 bit 0 */
#define WINB_PNPCVS (1<<2) /* CR16 bit 2 */
#define WINB_CHIPID 0xf /* CR9 bits 0-3 */
#define WINB_PRTMODS0 (1<<2) /* CR0 bit 2 */
#define WINB_PRTMODS1 (1<<3) /* CR0 bit 3 */
#define WINB_PRTMODS2 (1<<7) /* CR9 bit 7 */
/* W83877F modes: CR9/bit7 | CR0/bit3 | CR0/bit2 */
#define WINB_W83757 0x0
#define WINB_EXTFDC 0x4
#define WINB_EXTADP 0x8
#define WINB_EXT2FDD 0xc
#define WINB_JOYSTICK 0x80
#define WINB_PARALLEL 0x80
#define WINB_EPP_SPP 0x4
#define WINB_ECP 0x8
#define WINB_ECP_EPP 0xc
#endif
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