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authorAndy Walls <awalls@radix.net>2008-08-30 16:03:44 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2008-10-12 09:36:58 -0200
commitb1526421eac9a912b2cda7e147f1da2aa31be278 (patch)
tree5c21474d865bd43dc00514f0a55a84bdf05ba440 /drivers/media/video/cx18/cx18-io.h
parent4519064c1c7ccdd319d26181bdd12ee2df6e336e (diff)
V4L/DVB (8913): cx18: Create cx18_ specific wrappers for all pci mmio accessesors.
cx18: Create cx18_ specific wrappers for all pci mmio accessesors. This is a first step in instrumenting all CX23418 PCI bus IO, to debug problems with accessing the CX23418's PCI memory mapped IO. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/cx18/cx18-io.h')
-rw-r--r--drivers/media/video/cx18/cx18-io.h69
1 files changed, 69 insertions, 0 deletions
diff --git a/drivers/media/video/cx18/cx18-io.h b/drivers/media/video/cx18/cx18-io.h
new file mode 100644
index 00000000000..7c08c0add49
--- /dev/null
+++ b/drivers/media/video/cx18/cx18-io.h
@@ -0,0 +1,69 @@
+/*
+ * cx18 driver PCI memory mapped IO access routines
+ *
+ * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
+ * Copyright (C) 2008 Andy Walls <awalls@radix.net>
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307 USA
+ */
+
+#ifndef CX18_IO_H
+#define CX18_IO_H
+
+#include "cx18-driver.h"
+
+/* This is a PCI post thing, where if the pci register is not read, then
+ the write doesn't always take effect right away. By reading back the
+ register any pending PCI writes will be performed (in order), and so
+ you can be sure that the writes are guaranteed to be done.
+
+ Rarely needed, only in some timing sensitive cases.
+ Apparently if this is not done some motherboards seem
+ to kill the firmware and get into the broken state until computer is
+ rebooted. */
+u32 cx18_write_sync(struct cx18 *cx, u32 val, void __iomem *addr);
+
+void cx18_writel(struct cx18 *cx, u32 val, void __iomem *addr);
+u32 cx18_readl(struct cx18 *cx, const void __iomem *addr);
+
+/* No endiannes conversion calls */
+void cx18_raw_writel(struct cx18 *cx, u32 val, void __iomem *addr);
+u32 cx18_raw_readl(struct cx18 *cx, const void __iomem *addr);
+
+/* Access "register" region of CX23418 memory mapped I/O */
+u32 cx18_read_reg(struct cx18 *cx, u32 reg);
+void cx18_write_reg(struct cx18 *cx, u32 val, u32 reg);
+u32 cx18_write_reg_sync(struct cx18 *cx, u32 val, u32 reg);
+
+/* Access "encoder memory" region of CX23418 memory mapped I/O */
+u32 cx18_read_enc(struct cx18 *cx, u32 addr);
+void cx18_write_enc(struct cx18 *cx, u32 val, u32 addr);
+u32 cx18_write_enc_sync(struct cx18 *cx, u32 val, u32 addr);
+
+void cx18_memcpy_fromio(struct cx18 *cx, void *to,
+ const void __iomem *from, unsigned int len);
+void cx18_memset_io(struct cx18 *cx, void __iomem *addr, int val, size_t count);
+
+void cx18_sw1_irq_enable(struct cx18 *cx, u32 val);
+void cx18_sw1_irq_disable(struct cx18 *cx, u32 val);
+void cx18_sw2_irq_enable(struct cx18 *cx, u32 val);
+void cx18_sw2_irq_disable(struct cx18 *cx, u32 val);
+void cx18_setup_page(struct cx18 *cx, u32 addr);
+
+/* Tries to recover from the CX23418 responding improperly on the PCI bus */
+int cx18_pci_try_recover(struct cx18 *cx);
+
+#endif /* CX18_IO_H */