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8b9c385f76
Signed-off-by: Manu Abraham <manu@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
206 lines
6.3 KiB
C
206 lines
6.3 KiB
C
/*
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Mantis PCI bridge driver
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Copyright (C) 2005, 2006 Manu Abraham (abraham.manu@gmail.com)
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "mantis_common.h"
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#include "mantis_hif.h"
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#include "mantis_link.h" /* temporary due to physical layer stuff */
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static int mantis_hif_data_available(struct mantis_ca *ca)
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{
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struct mantis_pci *mantis = ca->ca_priv;
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int rc = 0;
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if (wait_event_interruptible_timeout(ca->hif_data_wq,
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ca->sbuf_status & MANTIS_SBUF_DATA_AVAIL,
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msecs_to_jiffies(500)) == -ERESTARTSYS) {
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dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Read wait event timeout !", mantis->num);
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rc = -EREMOTEIO;
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}
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ca->sbuf_status &= ~MANTIS_SBUF_DATA_AVAIL;
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udelay(2);
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return rc;
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}
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static int mantis_hif_sbuf_opdone_wait(struct mantis_ca *ca)
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{
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struct mantis_pci *mantis = ca->ca_priv;
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int rc = 0;
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if (wait_event_interruptible_timeout(ca->hif_opdone_wq,
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ca->hif_event & MANTIS_SBUF_OPDONE,
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msecs_to_jiffies(500)) == -ERESTARTSYS) {
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dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): Smart buffer operation timeout !", mantis->num);
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rc = -EREMOTEIO;
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}
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dprintk(verbose, MANTIS_DEBUG, 1, "Smart Buffer Operation complete");
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ca->hif_event &= ~MANTIS_SBUF_OPDONE;
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udelay(5);
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return rc;
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}
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int mantis_hif_read_mem(struct mantis_ca *ca, u32 addr)
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{
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struct mantis_pci *mantis = ca->ca_priv;
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u32 hif_addr = 0, data, count = 4;
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dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF Mem Read", mantis->num);
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hif_addr |= MANTIS_GPIF_HIFRDWRN;
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hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
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hif_addr &= ~MANTIS_GPIF_PCMCIAIOM;
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hif_addr |= addr;
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mmwrite(hif_addr | MANTIS_HIF_STATUS, MANTIS_GPIF_BRADDR);
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mmwrite(count, MANTIS_GPIF_BRBYTES);
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udelay(20);
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mmwrite(hif_addr, MANTIS_GPIF_ADDR);
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if (mantis_hif_data_available(ca) != 0) {
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dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): GPIF Smart Buffer burst read failed", mantis->num);
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return -EREMOTEIO;
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}
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if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
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dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): GPIF Smart Buffer operation failed", mantis->num);
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return -EREMOTEIO;
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}
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data = mmread(MANTIS_GPIF_DIN);
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dprintk(verbose, MANTIS_DEBUG, 1, "Mem Read: 0x%02x", data);
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return (data >> 24) & 0xff;
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}
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int mantis_hif_write_mem(struct mantis_ca *ca, u32 addr, u8 data)
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{
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struct mantis_slot *slot = ca->slot;
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struct mantis_pci *mantis = ca->ca_priv;
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u32 hif_addr = 0;
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dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF Mem Write", mantis->num);
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hif_addr &= ~MANTIS_GPIF_HIFRDWRN;
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hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
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hif_addr &= ~MANTIS_GPIF_PCMCIAIOM;
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hif_addr |= addr;
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mmwrite(slot->slave_cfg, MANTIS_GPIF_CFGSLA); /* Slot0 alone for now */
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mmwrite(hif_addr | MANTIS_HIF_STATUS, MANTIS_GPIF_ADDR);
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mmwrite(data, MANTIS_GPIF_DOUT);
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ca->hif_job_queue = MANTIS_HIF_MEMWR;
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if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
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ca->hif_job_queue &= ~MANTIS_HIF_MEMWR;
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dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
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return -EREMOTEIO;
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}
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ca->hif_job_queue &= ~MANTIS_HIF_MEMWR;
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dprintk(verbose, MANTIS_DEBUG, 1, "Mem Write: (0x%02x to 0x%02x)", data, addr);
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return 0;
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}
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int mantis_hif_read_iom(struct mantis_ca *ca, u32 addr)
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{
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struct mantis_pci *mantis = ca->ca_priv;
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u32 data, hif_addr = 0;
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dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF I/O Read", mantis->num);
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hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
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hif_addr |= MANTIS_GPIF_HIFRDWRN;
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hif_addr |= MANTIS_GPIF_PCMCIAIOM;
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hif_addr |= addr;
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mmwrite(hif_addr | MANTIS_HIF_STATUS, MANTIS_GPIF_ADDR);
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ca->hif_job_queue = MANTIS_HIF_IOMRD;
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if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
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ca->hif_job_queue &= ~MANTIS_HIF_IOMRD;
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dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
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return -EREMOTEIO;
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}
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ca->hif_job_queue &= ~MANTIS_HIF_IOMRD;
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data = mmread(MANTIS_GPIF_DIN);
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hif_addr |= MANTIS_GPIF_PCMCIAREG;
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mmwrite(hif_addr, MANTIS_GPIF_ADDR);
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dprintk(verbose, MANTIS_DEBUG, 1, "I/O Read: 0x%02x", data);
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udelay(50);
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return (u8) data;
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}
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int mantis_hif_write_iom(struct mantis_ca *ca, u32 addr, u8 data)
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{
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struct mantis_pci *mantis = ca->ca_priv;
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u32 hif_addr = 0;
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dprintk(verbose, MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF I/O Write", mantis->num);
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hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
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hif_addr &= ~MANTIS_GPIF_HIFRDWRN;
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hif_addr |= MANTIS_GPIF_PCMCIAIOM;
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hif_addr |= addr;
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mmwrite(hif_addr | MANTIS_HIF_STATUS, MANTIS_GPIF_ADDR);
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mmwrite(data, MANTIS_GPIF_DOUT);
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ca->hif_job_queue = MANTIS_HIF_IOMWR;
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if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
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ca->hif_job_queue &= ~MANTIS_HIF_IOMWR;
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dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
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return -EREMOTEIO;
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}
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ca->hif_job_queue &= ~MANTIS_HIF_IOMWR;
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hif_addr |= MANTIS_GPIF_PCMCIAREG;
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mmwrite(hif_addr, MANTIS_GPIF_ADDR);
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dprintk(verbose, MANTIS_DEBUG, 1, "I/O Write: (0x%02x to 0x%02x)", data, addr);
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udelay(50);
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return 0;
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}
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int mantis_hif_init(struct mantis_ca *ca)
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{
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struct mantis_slot *slot = ca->slot;
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struct mantis_pci *mantis = ca->ca_priv;
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u32 irqcfg;
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slot[0].slave_cfg = 0x70773028;
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dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Initializing Mantis Host Interface", mantis->num);
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init_waitqueue_head(&ca->hif_data_wq);
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init_waitqueue_head(&ca->hif_opdone_wq);
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irqcfg = mmread(MANTIS_GPIF_IRQCFG);
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irqcfg |= MANTIS_MASK_BRRDY;
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mmwrite(irqcfg, MANTIS_GPIF_IRQCFG);
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return 0;
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}
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void mantis_hif_exit(struct mantis_ca *ca)
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{
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struct mantis_pci *mantis = ca->ca_priv;
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u32 irqcfg;
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dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Exiting Mantis Host Interface", mantis->num);
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irqcfg = mmread(MANTIS_GPIF_IRQCFG);
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irqcfg &= ~MANTIS_MASK_BRRDY;
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mmwrite(irqcfg, MANTIS_GPIF_IRQCFG);
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}
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