[reactos] 06/07: [ISAPNP] Read all tags when detecting devices, and keep interesting ones
22 Mar
2020
22 Mar
'20
1:30 p.m.
https://git.reactos.org/?p=reactos.git;a=commitdiff;h=0ca55678941e6a6951ce1…
commit 0ca55678941e6a6951ce1bc78e2e749a6e97a2e1
Author: Hervé Poussineau <hpoussin(a)reactos.org>
AuthorDate: Sat Mar 21 23:08:00 2020 +0100
Commit: Hervé Poussineau <hpoussin(a)reactos.org>
CommitDate: Sun Mar 22 14:29:38 2020 +0100
[ISAPNP] Read all tags when detecting devices, and keep interesting ones
Currently, we only keep device identification, IO ports and IRQs.
---
drivers/bus/isapnp/fdo.c | 1 +
drivers/bus/isapnp/hardware.c | 117 +++++++++++++++++++++++++++---------------
drivers/bus/isapnp/isapnp.c | 1 -
drivers/bus/isapnp/isapnp.h | 17 +++++-
drivers/bus/isapnp/isapnphw.h | 17 ++++++
drivers/bus/isapnp/pdo.c | 1 +
6 files changed, 109 insertions(+), 45 deletions(-)
diff --git a/drivers/bus/isapnp/fdo.c b/drivers/bus/isapnp/fdo.c
index caa4b69c7e2..be044407f20 100644
--- a/drivers/bus/isapnp/fdo.c
+++ b/drivers/bus/isapnp/fdo.c
@@ -3,6 +3,7 @@
* FILE: fdo.c
* PURPOSE: FDO-specific code
* PROGRAMMERS: Cameron Gutman (cameron.gutman(a)reactos.org)
+ * Hervé Poussineau
*/
#include <isapnp.h>
diff --git a/drivers/bus/isapnp/hardware.c b/drivers/bus/isapnp/hardware.c
index 53b71b78abb..36638e0632d 100644
--- a/drivers/bus/isapnp/hardware.c
+++ b/drivers/bus/isapnp/hardware.c
@@ -3,10 +3,10 @@
* FILE: hardware.c
* PURPOSE: Hardware support code
* PROGRAMMERS: Cameron Gutman (cameron.gutman(a)reactos.org)
+ * Hervé Poussineau
*/
#include <isapnp.h>
-#include <isapnphw.h>
#define NDEBUG
#include <debug.h>
@@ -189,6 +189,16 @@ ReadIrqNo(
return ReadByte(ReadDataPort, ISAPNP_IRQNO(Index));
}
+static
+inline
+USHORT
+ReadIrqType(
+ IN PUCHAR ReadDataPort,
+ IN USHORT Index)
+{
+ return ReadByte(ReadDataPort, ISAPNP_IRQTYPE(Index));
+}
+
static
inline
VOID
@@ -287,15 +297,19 @@ IsaPnpChecksum(
static
BOOLEAN
-FindTag(
+ReadTags(
IN PUCHAR ReadDataPort,
- IN USHORT WantedTag,
- IN OUT PVOID Buffer,
- IN ULONG Length)
+ IN USHORT LogDev,
+ IN OUT PISAPNP_LOGICAL_DEVICE LogDevice)
{
- USHORT Tag, TagLen;
+ BOOLEAN res = FALSE;
+ PVOID Buffer;
+ USHORT Tag, TagLen, MaxLen;
+ ULONG NumberOfIo = 0, NumberOfIrq = 0;
- do
+ LogDev += 1;
+
+ while (TRUE)
{
Tag = PeekByte(ReadDataPort);
if (ISAPNP_IS_SMALL_TAG(Tag))
@@ -308,41 +322,55 @@ FindTag(
TagLen = PeekByte(ReadDataPort) + (PeekByte(ReadDataPort) << 8);
Tag = ISAPNP_LARGE_TAG_NAME(Tag);
}
+ if (Tag == ISAPNP_TAG_END)
+ break;
- if (Tag == WantedTag)
+ Buffer = NULL;
+ if (Tag == ISAPNP_TAG_LOGDEVID)
{
- if (Length > TagLen)
- Length = TagLen;
-
- Peek(ReadDataPort, Buffer, Length);
+ MaxLen = sizeof(LogDevice->LogDevId);
+ Buffer = &LogDevice->LogDevId;
+ LogDev--;
+ }
+ else if (Tag == ISAPNP_TAG_IRQ && NumberOfIrq <
ARRAYSIZE(LogDevice->Irq))
+ {
+ MaxLen = sizeof(LogDevice->Irq[NumberOfIrq].Description);
+ Buffer = &LogDevice->Irq[NumberOfIrq].Description;
+ NumberOfIrq++;
+ }
+ else if (Tag == ISAPNP_TAG_IOPORT && NumberOfIo <
ARRAYSIZE(LogDevice->Io))
+ {
+ MaxLen = sizeof(LogDevice->Io[NumberOfIo].Description);
+ Buffer = &LogDevice->Io[NumberOfIo].Description;
+ NumberOfIo++;
+ }
+ else if (LogDev == 0)
+ {
+ DPRINT1("Found unknown tag 0x%x (len %d)\n", Tag, TagLen);
+ }
- return TRUE;
+ if (Buffer && LogDev == 0)
+ {
+ res = TRUE;
+ if (MaxLen > TagLen)
+ {
+ Peek(ReadDataPort, Buffer, TagLen);
+ }
+ else
+ {
+ Peek(ReadDataPort, Buffer, MaxLen);
+ Peek(ReadDataPort, NULL, TagLen - MaxLen);
+ }
}
else
{
+ /* We don't want to read informations on this
+ * logical device, or we don't know the tag. */
Peek(ReadDataPort, NULL, TagLen);
}
- } while (Tag != ISAPNP_TAG_END);
+ };
- return FALSE;
-}
-
-static
-BOOLEAN
-FindLogDevId(
- IN PUCHAR ReadDataPort,
- IN USHORT LogDev,
- IN OUT PISAPNP_LOGDEVID LogDeviceId)
-{
- USHORT i;
-
- for (i = 0; i <= LogDev; i++)
- {
- if (!FindTag(ReadDataPort, ISAPNP_TAG_LOGDEVID, LogDeviceId,
sizeof(*LogDeviceId)))
- return FALSE;
- }
-
- return TRUE;
+ return res;
}
static
@@ -476,9 +504,9 @@ ProbeIsaPnpBus(
{
PISAPNP_LOGICAL_DEVICE LogDevice;
ISAPNP_IDENTIFIER Identifier;
- ISAPNP_LOGDEVID LogDevId;
USHORT Csn;
USHORT LogDev;
+ ULONG i;
ASSERT(FdoExt->ReadDataPort);
@@ -507,21 +535,26 @@ ProbeIsaPnpBus(
return STATUS_SUCCESS;
}
- if (!FindLogDevId(FdoExt->ReadDataPort, LogDev, &LogDevId))
+ if (!ReadTags(FdoExt->ReadDataPort, LogDev, LogDevice))
break;
WriteLogicalDeviceNumber(LogDev);
- LogDevice->VendorId[0] = ((LogDevId.VendorId >> 2) & 0x1f) +
'A' - 1,
- LogDevice->VendorId[1] = (((LogDevId.VendorId & 0x3) << 3) |
((LogDevId.VendorId >> 13) & 0x7)) + 'A' - 1,
- LogDevice->VendorId[2] = ((LogDevId.VendorId >> 8) & 0x1f) +
'A' - 1,
- LogDevice->ProdId = RtlUshortByteSwap(LogDevId.ProdId);
+ LogDevice->VendorId[0] = ((LogDevice->LogDevId.VendorId >> 2)
& 0x1f) + 'A' - 1,
+ LogDevice->VendorId[1] = (((LogDevice->LogDevId.VendorId & 0x3)
<< 3) | ((LogDevice->LogDevId.VendorId >> 13) & 0x7)) + 'A' -
1,
+ LogDevice->VendorId[2] = ((LogDevice->LogDevId.VendorId >> 8)
& 0x1f) + 'A' - 1,
+ LogDevice->ProdId = RtlUshortByteSwap(LogDevice->LogDevId.ProdId);
LogDevice->SerialNumber = Identifier.Serial;
- LogDevice->IoAddr = ReadIoBase(FdoExt->ReadDataPort, 0);
- LogDevice->IrqNo = ReadIrqNo(FdoExt->ReadDataPort, 0);
+ for (i = 0; i < ARRAYSIZE(LogDevice->Io); i++)
+ LogDevice->Io[i].CurrentBase = ReadIoBase(FdoExt->ReadDataPort, i);
+ for (i = 0; i < ARRAYSIZE(LogDevice->Irq); i++)
+ {
+ LogDevice->Irq[i].CurrentNo = ReadIrqNo(FdoExt->ReadDataPort, i);
+ LogDevice->Irq[i].CurrentType = ReadIrqType(FdoExt->ReadDataPort,
i);
+ }
DPRINT1("Detected ISA PnP device - VID: '%3s' PID: 0x%x SN:
0x%08x IoBase: 0x%x IRQ:0x%x\n",
- LogDevice->VendorId, LogDevice->ProdId,
LogDevice->SerialNumber, LogDevice->IoAddr, LogDevice->IrqNo);
+ LogDevice->VendorId, LogDevice->ProdId,
LogDevice->SerialNumber, LogDevice->Io[0].CurrentBase,
LogDevice->Irq[0].CurrentNo);
WaitForKey();
diff --git a/drivers/bus/isapnp/isapnp.c b/drivers/bus/isapnp/isapnp.c
index 6f22efcd014..5c5321b3308 100644
--- a/drivers/bus/isapnp/isapnp.c
+++ b/drivers/bus/isapnp/isapnp.c
@@ -6,7 +6,6 @@
*/
#include <isapnp.h>
-#include <isapnphw.h>
#define NDEBUG
#include <debug.h>
diff --git a/drivers/bus/isapnp/isapnp.h b/drivers/bus/isapnp/isapnp.h
index 416ed2df55f..ea7fca25cb6 100644
--- a/drivers/bus/isapnp/isapnp.h
+++ b/drivers/bus/isapnp/isapnp.h
@@ -3,6 +3,7 @@
#include <wdm.h>
#include <ntstrsafe.h>
+#include <isapnphw.h>
#ifdef __cplusplus
extern "C" {
@@ -15,13 +16,25 @@ typedef enum {
dsStarted
} ISAPNP_DEVICE_STATE;
+typedef struct _ISAPNP_IO {
+ USHORT CurrentBase;
+ ISAPNP_IO_DESCRIPTION Description;
+} ISAPNP_IO, PISAPNP_IO;
+
+typedef struct _ISAPNP_IRQ {
+ UCHAR CurrentNo;
+ UCHAR CurrentType;
+ ISAPNP_IRQ_DESCRIPTION Description;
+} ISAPNP_IRQ, *PISAPNP_IRQ;
+
typedef struct _ISAPNP_LOGICAL_DEVICE {
PDEVICE_OBJECT Pdo;
+ ISAPNP_LOGDEVID LogDevId;
UCHAR VendorId[3];
USHORT ProdId;
ULONG SerialNumber;
- USHORT IoAddr;
- UCHAR IrqNo;
+ ISAPNP_IO Io[8];
+ ISAPNP_IRQ Irq[2];
UCHAR CSN;
UCHAR LDN;
LIST_ENTRY ListEntry;
diff --git a/drivers/bus/isapnp/isapnphw.h b/drivers/bus/isapnp/isapnphw.h
index eeef89951f0..86a55073615 100644
--- a/drivers/bus/isapnp/isapnphw.h
+++ b/drivers/bus/isapnp/isapnphw.h
@@ -101,6 +101,23 @@ typedef struct _ISAPNP_DEVICEID {
USHORT ProdId;
} ISAPNP_DEVICEID, *PISAPNP_DEVICEID;
+#include <pshpack1.h>
+
+typedef struct _ISAPNP_IO_DESCRIPTION {
+ UCHAR Information;
+ USHORT Minimum;
+ USHORT Maximum;
+ UCHAR Alignment;
+ UCHAR Length;
+} ISAPNP_IO_DESCRIPTION;
+
+typedef struct _ISAPNP_IRQ_DESCRIPTION {
+ USHORT Mask;
+ UCHAR Information;
+} ISAPNP_IRQ_DESCRIPTION;
+
+#include <poppack.h>
+
#ifdef __cplusplus
}
#endif
diff --git a/drivers/bus/isapnp/pdo.c b/drivers/bus/isapnp/pdo.c
index d4a34cf78ec..7cd8c7d3812 100644
--- a/drivers/bus/isapnp/pdo.c
+++ b/drivers/bus/isapnp/pdo.c
@@ -3,6 +3,7 @@
* FILE: pdo.c
* PURPOSE: PDO-specific code
* PROGRAMMERS: Cameron Gutman (cameron.gutman(a)reactos.org)
+ * Hervé Poussineau
*/
#include <isapnp.h>
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Hervé Poussineau