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path: root/drivers/media/pci/mantis/mantis_hif.c
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Diffstat (limited to 'drivers/media/pci/mantis/mantis_hif.c')
-rw-r--r--drivers/media/pci/mantis/mantis_hif.c239
1 files changed, 239 insertions, 0 deletions
diff --git a/drivers/media/pci/mantis/mantis_hif.c b/drivers/media/pci/mantis/mantis_hif.c
new file mode 100644
index 000000000000..10c68df7e16f
--- /dev/null
+++ b/drivers/media/pci/mantis/mantis_hif.c
@@ -0,0 +1,239 @@
+/*
+ Mantis PCI bridge driver
+
+ Copyright (C) Manu Abraham (abraham.manu@gmail.com)
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+
+#include <linux/interrupt.h>
+#include <asm/io.h>
+
+#include "dmxdev.h"
+#include "dvbdev.h"
+#include "dvb_demux.h"
+#include "dvb_frontend.h"
+#include "dvb_net.h"
+
+#include "mantis_common.h"
+
+#include "mantis_hif.h"
+#include "mantis_link.h" /* temporary due to physical layer stuff */
+
+#include "mantis_reg.h"
+
+
+static int mantis_hif_sbuf_opdone_wait(struct mantis_ca *ca)
+{
+ struct mantis_pci *mantis = ca->ca_priv;
+ int rc = 0;
+
+ if (wait_event_timeout(ca->hif_opdone_wq,
+ ca->hif_event & MANTIS_SBUF_OPDONE,
+ msecs_to_jiffies(500)) == -ERESTARTSYS) {
+
+ dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): Smart buffer operation timeout !", mantis->num);
+ rc = -EREMOTEIO;
+ }
+ dprintk(MANTIS_DEBUG, 1, "Smart Buffer Operation complete");
+ ca->hif_event &= ~MANTIS_SBUF_OPDONE;
+ return rc;
+}
+
+static int mantis_hif_write_wait(struct mantis_ca *ca)
+{
+ struct mantis_pci *mantis = ca->ca_priv;
+ u32 opdone = 0, timeout = 0;
+ int rc = 0;
+
+ if (wait_event_timeout(ca->hif_write_wq,
+ mantis->gpif_status & MANTIS_GPIF_WRACK,
+ msecs_to_jiffies(500)) == -ERESTARTSYS) {
+
+ dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): Write ACK timed out !", mantis->num);
+ rc = -EREMOTEIO;
+ }
+ dprintk(MANTIS_DEBUG, 1, "Write Acknowledged");
+ mantis->gpif_status &= ~MANTIS_GPIF_WRACK;
+ while (!opdone) {
+ opdone = (mmread(MANTIS_GPIF_STATUS) & MANTIS_SBUF_OPDONE);
+ udelay(500);
+ timeout++;
+ if (timeout > 100) {
+ dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): Write operation timed out!", mantis->num);
+ rc = -ETIMEDOUT;
+ break;
+ }
+ }
+ dprintk(MANTIS_DEBUG, 1, "HIF Write success");
+ return rc;
+}
+
+
+int mantis_hif_read_mem(struct mantis_ca *ca, u32 addr)
+{
+ struct mantis_pci *mantis = ca->ca_priv;
+ u32 hif_addr = 0, data, count = 4;
+
+ dprintk(MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF Mem Read", mantis->num);
+ mutex_lock(&ca->ca_lock);
+ hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
+ hif_addr &= ~MANTIS_GPIF_PCMCIAIOM;
+ hif_addr |= MANTIS_HIF_STATUS;
+ hif_addr |= addr;
+
+ mmwrite(hif_addr, MANTIS_GPIF_BRADDR);
+ mmwrite(count, MANTIS_GPIF_BRBYTES);
+ udelay(20);
+ mmwrite(hif_addr | MANTIS_GPIF_HIFRDWRN, MANTIS_GPIF_ADDR);
+
+ if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
+ dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): GPIF Smart Buffer operation failed", mantis->num);
+ mutex_unlock(&ca->ca_lock);
+ return -EREMOTEIO;
+ }
+ data = mmread(MANTIS_GPIF_DIN);
+ mutex_unlock(&ca->ca_lock);
+ dprintk(MANTIS_DEBUG, 1, "Mem Read: 0x%02x", data);
+ return (data >> 24) & 0xff;
+}
+
+int mantis_hif_write_mem(struct mantis_ca *ca, u32 addr, u8 data)
+{
+ struct mantis_slot *slot = ca->slot;
+ struct mantis_pci *mantis = ca->ca_priv;
+ u32 hif_addr = 0;
+
+ dprintk(MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF Mem Write", mantis->num);
+ mutex_lock(&ca->ca_lock);
+ hif_addr &= ~MANTIS_GPIF_HIFRDWRN;
+ hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
+ hif_addr &= ~MANTIS_GPIF_PCMCIAIOM;
+ hif_addr |= MANTIS_HIF_STATUS;
+ hif_addr |= addr;
+
+ mmwrite(slot->slave_cfg, MANTIS_GPIF_CFGSLA); /* Slot0 alone for now */
+ mmwrite(hif_addr, MANTIS_GPIF_ADDR);
+ mmwrite(data, MANTIS_GPIF_DOUT);
+
+ if (mantis_hif_write_wait(ca) != 0) {
+ dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
+ mutex_unlock(&ca->ca_lock);
+ return -EREMOTEIO;
+ }
+ dprintk(MANTIS_DEBUG, 1, "Mem Write: (0x%02x to 0x%02x)", data, addr);
+ mutex_unlock(&ca->ca_lock);
+
+ return 0;
+}
+
+int mantis_hif_read_iom(struct mantis_ca *ca, u32 addr)
+{
+ struct mantis_pci *mantis = ca->ca_priv;
+ u32 data, hif_addr = 0;
+
+ dprintk(MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF I/O Read", mantis->num);
+ mutex_lock(&ca->ca_lock);
+ hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
+ hif_addr |= MANTIS_GPIF_PCMCIAIOM;
+ hif_addr |= MANTIS_HIF_STATUS;
+ hif_addr |= addr;
+
+ mmwrite(hif_addr, MANTIS_GPIF_BRADDR);
+ mmwrite(1, MANTIS_GPIF_BRBYTES);
+ udelay(20);
+ mmwrite(hif_addr | MANTIS_GPIF_HIFRDWRN, MANTIS_GPIF_ADDR);
+
+ if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
+ dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
+ mutex_unlock(&ca->ca_lock);
+ return -EREMOTEIO;
+ }
+ data = mmread(MANTIS_GPIF_DIN);
+ dprintk(MANTIS_DEBUG, 1, "I/O Read: 0x%02x", data);
+ udelay(50);
+ mutex_unlock(&ca->ca_lock);
+
+ return (u8) data;
+}
+
+int mantis_hif_write_iom(struct mantis_ca *ca, u32 addr, u8 data)
+{
+ struct mantis_pci *mantis = ca->ca_priv;
+ u32 hif_addr = 0;
+
+ dprintk(MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF I/O Write", mantis->num);
+ mutex_lock(&ca->ca_lock);
+ hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
+ hif_addr &= ~MANTIS_GPIF_HIFRDWRN;
+ hif_addr |= MANTIS_GPIF_PCMCIAIOM;
+ hif_addr |= MANTIS_HIF_STATUS;
+ hif_addr |= addr;
+
+ mmwrite(hif_addr, MANTIS_GPIF_ADDR);
+ mmwrite(data, MANTIS_GPIF_DOUT);
+
+ if (mantis_hif_write_wait(ca) != 0) {
+ dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
+ mutex_unlock(&ca->ca_lock);
+ return -EREMOTEIO;
+ }
+ dprintk(MANTIS_DEBUG, 1, "I/O Write: (0x%02x to 0x%02x)", data, addr);
+ mutex_unlock(&ca->ca_lock);
+ udelay(50);
+
+ return 0;
+}
+
+int mantis_hif_init(struct mantis_ca *ca)
+{
+ struct mantis_slot *slot = ca->slot;
+ struct mantis_pci *mantis = ca->ca_priv;
+ u32 irqcfg;
+
+ slot[0].slave_cfg = 0x70773028;
+ dprintk(MANTIS_ERROR, 1, "Adapter(%d) Initializing Mantis Host Interface", mantis->num);
+
+ mutex_lock(&ca->ca_lock);
+ irqcfg = mmread(MANTIS_GPIF_IRQCFG);
+ irqcfg = MANTIS_MASK_BRRDY |
+ MANTIS_MASK_WRACK |
+ MANTIS_MASK_EXTIRQ |
+ MANTIS_MASK_WSTO |
+ MANTIS_MASK_OTHERR |
+ MANTIS_MASK_OVFLW;
+
+ mmwrite(irqcfg, MANTIS_GPIF_IRQCFG);
+ mutex_unlock(&ca->ca_lock);
+
+ return 0;
+}
+
+void mantis_hif_exit(struct mantis_ca *ca)
+{
+ struct mantis_pci *mantis = ca->ca_priv;
+ u32 irqcfg;
+
+ dprintk(MANTIS_ERROR, 1, "Adapter(%d) Exiting Mantis Host Interface", mantis->num);
+ mutex_lock(&ca->ca_lock);
+ irqcfg = mmread(MANTIS_GPIF_IRQCFG);
+ irqcfg &= ~MANTIS_MASK_BRRDY;
+ mmwrite(irqcfg, MANTIS_GPIF_IRQCFG);
+ mutex_unlock(&ca->ca_lock);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 13:57:08 +0000