V4L/DVB (13741): [Mantis] Implement HIF Mem Read/Write operations

Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

6 files changed, 157 insertions, 8 deletions

diff --git a/drivers/media/dvb/mantis/Makefile b/drivers/media/dvb/mantis/Makefile
index c4da0d8ed186..d002ef9f7449 100644
--- a/drivers/media/dvb/mantis/Makefile
+++ b/drivers/media/dvb/mantis/Makefile
@@ -4,6 +4,7 @@ mantis-objs = 	mantis_core.o	\
 		mantis_i2c.o	\
 		mantis_dvb.o	\
 		mantis_evm.o	\
+		mantis_hif.o	\
 		mantis_ca.o	\
 		mantis_pcmcia.o	\
 		mantis_vp1033.o	\
diff --git a/drivers/media/dvb/mantis/mantis_dma.c b/drivers/media/dvb/mantis/mantis_dma.c
index f685992f7d0a..250f49a913aa 100644
--- a/drivers/media/dvb/mantis/mantis_dma.c
+++ b/drivers/media/dvb/mantis/mantis_dma.c
@@ -190,7 +190,7 @@ void mantis_dma_start(struct mantis_pci *mantis)
 
 	mantis_risc_program(mantis);
 	mmwrite(mantis->risc_dma, MANTIS_RISC_START);
-	mmwrite(mmread(MANTIS_GPIF_ADDR) | MANTIS_GPIF_RDWRN, MANTIS_GPIF_ADDR);
+	mmwrite(mmread(MANTIS_GPIF_HIFADDR) | MANTIS_GPIF_HIFRDWRN, MANTIS_GPIF_HIFADDR);
 
 	mmwrite(0, MANTIS_DMA_CTL);
 	mantis->last_block = mantis->finished_block = 0;
@@ -210,7 +210,7 @@ void mantis_dma_stop(struct mantis_pci *mantis)
 	mask = mmread(MANTIS_INT_MASK);
 	dprintk(verbose, MANTIS_DEBUG, 1, "Mantis Stop DMA engine");
 
-	mmwrite((mmread(MANTIS_GPIF_ADDR) & (~(MANTIS_GPIF_RDWRN))), MANTIS_GPIF_ADDR);
+	mmwrite((mmread(MANTIS_GPIF_HIFADDR) & (~(MANTIS_GPIF_HIFRDWRN))), MANTIS_GPIF_HIFADDR);
 
 	mmwrite((mmread(MANTIS_DMA_CTL) & ~(MANTIS_FIFO_EN |
 					    MANTIS_DCAP_EN |
diff --git a/drivers/media/dvb/mantis/mantis_evm.c b/drivers/media/dvb/mantis/mantis_evm.c
index 745148399981..dbcdca3a8f03 100644
--- a/drivers/media/dvb/mantis/mantis_evm.c
+++ b/drivers/media/dvb/mantis/mantis_evm.c
@@ -92,7 +92,7 @@ int mantis_evmgr_init(struct mantis_ca *ca)
 	INIT_WORK(&ca->hif_evm_work, mantis_hifevm_work);
 	mantis_pcmcia_init(ca);
 	schedule_work(&ca->hif_evm_work);
-
+	mantis_hif_init(ca);
 	return 0;
 }
 
@@ -102,5 +102,6 @@ void mantis_evmgr_exit(struct mantis_ca *ca)
 
 	dprintk(verbose, MANTIS_DEBUG, 1, "Mantis Host I/F Event manager exiting");
 	flush_scheduled_work();
+	mantis_hif_exit(ca);
 	mantis_pcmcia_exit(ca);
 }
diff --git a/drivers/media/dvb/mantis/mantis_hif.c b/drivers/media/dvb/mantis/mantis_hif.c
new file mode 100644
index 000000000000..1472008e257e
--- /dev/null
+++ b/drivers/media/dvb/mantis/mantis_hif.c
@@ -0,0 +1,139 @@
+/*
+	Mantis PCI bridge driver
+
+	Copyright (C) 2005, 2006 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 "mantis_common.h"
+#include "mantis_hif.h"
+#include "mantis_link.h" /* temporary due to physical layer stuff */
+
+static int mantis_hif_data_available(struct mantis_ca *ca)
+{
+	struct mantis_pci *mantis = ca->ca_priv;
+	int rc = 0;
+
+	if (wait_event_interruptible_timeout(ca->hif_data_wq,
+					     ca->sbuf_status & MANTIS_SBUF_DATA_AVAIL,
+					     msecs_to_jiffies(500)) == -ERESTARTSYS) {
+
+		dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Read wait event timeout !", mantis->num);
+		rc = -EREMOTEIO;
+	}
+	ca->sbuf_status &= ~MANTIS_SBUF_DATA_AVAIL;
+	udelay(2);
+	return rc;
+}
+
+static int mantis_hif_sbuf_opdone_wait(struct mantis_ca *ca)
+{
+	struct mantis_pci *mantis = ca->ca_priv;
+	int rc = 0;
+
+	if (wait_event_interruptible_timeout(ca->hif_opdone_wq,
+					     ca->hif_event & MANTIS_SBUF_OPDONE,
+					     msecs_to_jiffies(500)) == -ERESTARTSYS) {
+
+		dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): Smart buffer operation timeout !", mantis->num);
+		rc = -EREMOTEIO;
+	}
+	ca->hif_event &= ~MANTIS_SBUF_OPDONE;
+	udelay(5);
+	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;
+
+	hif_addr |=  MANTIS_GPIF_HIFRDWRN;
+	hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
+	hif_addr &= ~MANTIS_GPIF_PCMCIAIOM;
+	hif_addr |=  addr;
+
+	mmwrite(hif_addr, MANTIS_GPIF_BRADDR);
+	mmwrite(count, MANTIS_GPIF_BRBYTES);
+
+	udelay(20);
+
+	mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);
+	if (mantis_hif_data_available(ca) != 0) {
+		dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): GPIF Smart Buffer burst read failed", mantis->num);
+		return -EREMOTEIO;
+	}
+	if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
+		dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): GPIF Smart Buffer operation failed", mantis->num);
+		return -EREMOTEIO;
+	}
+	data = mmread(MANTIS_GPIF_HIFDIN);
+
+	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;
+
+	hif_addr &= ~MANTIS_GPIF_HIFRDWRN;
+	hif_addr &= ~MANTIS_GPIF_PCMCIAREG;
+	hif_addr &= ~MANTIS_GPIF_PCMCIAIOM;
+	hif_addr |= addr;
+
+	mmwrite(slot->slave_cfg, MANTIS_GPIF_CFGSLA); /* Slot0 alone for now */
+
+	mmwrite(hif_addr, MANTIS_GPIF_HIFADDR);
+	mmwrite(data, MANTIS_GPIF_HIFDOUT);
+	ca->hif_job_queue = MANTIS_HIF_MEMWR;
+
+	if (mantis_hif_sbuf_opdone_wait(ca) != 0) {
+		ca->hif_job_queue &= ~MANTIS_HIF_MEMWR;
+		dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num);
+		return -EREMOTEIO;
+	}
+	ca->hif_job_queue &= ~MANTIS_HIF_MEMWR;
+	return 0;
+}
+
+int mantis_hif_init(struct mantis_ca *ca)
+{
+	struct mantis_pci *mantis = ca->ca_priv;
+	u32 irqcfg;
+
+	dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Initializing Mantis Host Interface", mantis->num);
+	init_waitqueue_head(&ca->hif_data_wq);
+	init_waitqueue_head(&ca->hif_opdone_wq);
+
+	irqcfg  = mmread(MANTIS_GPIF_IRQCFG);
+	irqcfg |= MANTIS_MASK_BRRDY;
+	mmwrite(irqcfg, MANTIS_GPIF_IRQCFG);
+
+	return 0;
+}
+
+void mantis_hif_exit(struct mantis_ca *ca)
+{
+	struct mantis_pci *mantis = ca->ca_priv;
+	u32 irqcfg;
+
+	dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Exiting Mantis Host Interface", mantis->num);
+	irqcfg = mmread(MANTIS_GPIF_IRQCFG);
+	irqcfg &= ~MANTIS_MASK_BRRDY;
+	mmwrite(irqcfg, MANTIS_GPIF_IRQCFG);
+}
diff --git a/drivers/media/dvb/mantis/mantis_link.h b/drivers/media/dvb/mantis/mantis_link.h
index 33b39b781d2e..8862502866c5 100644
--- a/drivers/media/dvb/mantis/mantis_link.h
+++ b/drivers/media/dvb/mantis/mantis_link.h
@@ -31,6 +31,8 @@ enum mantis_sbuf_status {
 
 struct mantis_slot {
 	u32				timeout;
+	u32				slave_cfg;
+	u32				bar;
 };
 
 /* Physical layer */
@@ -40,7 +42,7 @@ enum mantis_slot_state {
 };
 
 struct mantis_ca {
-	struct mantis_slot		slot;
+	struct mantis_slot		slot[4];
 
 	struct work_struct		hif_evm_work;
 
@@ -66,4 +68,10 @@ extern void mantis_pcmcia_exit(struct mantis_ca *ca);
 extern int mantis_evmgr_init(struct mantis_ca *ca);
 extern void mantis_evmgr_exit(struct mantis_ca *ca);
 
+/* HIF */
+extern int mantis_hif_init(struct mantis_ca *ca);
+extern void mantis_hif_exit(struct mantis_ca *ca);
+extern int mantis_hif_read_mem(struct mantis_ca *ca, u32 addr);
+extern int mantis_hif_write_mem(struct mantis_ca *ca, u32 addr, u8 data);
+
 #endif // __MANTIS_LINK_H
diff --git a/drivers/media/dvb/mantis/mantis_reg.h b/drivers/media/dvb/mantis/mantis_reg.h
index d9862b7dbf03..6f5cd4936763 100644
--- a/drivers/media/dvb/mantis/mantis_reg.h
+++ b/drivers/media/dvb/mantis/mantis_reg.h
@@ -147,16 +147,16 @@
 #define MANTIS_CARD_RESET		0xac
 
 #define MANTIS_GPIF_ADDR		0xb0
-#define MANTIS_GPIF_RDWRN		(0x01		<< 31)
+#define MANTIS_GPIF_HIFRDWRN		(0x01		<< 31)
 #define MANTIS_GPIF_PCMCIAREG		(0x01		<< 27)
 #define MANTIS_GPIF_PCMCIAIOM		(0x01		<< 26)
-#define MANTIS_GPIF_HIF_ADDR		(0xfffffff	<<  0)
+#define MANTIS_GPIF_HIFADDR		(0xfffffff	<<  0)
 
 #define MANTIS_GPIF_DOUT		0xb4
-#define MANTIS_GPIF_HIF_DOUT		(0xfffffff	<<  0)
+#define MANTIS_GPIF_HIFDOUT		(0xfffffff	<<  0)
 
 #define MANTIS_GPIF_DIN			0xb8
-#define MANTIS_GPIF_HIF_DIN		(0xfffffff	<<  0)
+#define MANTIS_GPIF_HIFDIN		(0xfffffff	<<  0)
 
 #define MANTIS_GPIF_SPARE		0xbc
 #define MANTIS_GPIF_LOGICRD		(0xffff		<< 16)