[PATCH 1/2] introduced some necessary read/write csr/bcr functions

[Dmitry Podgorny]

---
 src/pcnet.c |   88 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 88 insertions(+), 0 deletions(-)

diff --git a/src/pcnet.c b/src/pcnet.c
index c2f9731..480a67f 100644
--- a/src/pcnet.c
+++ b/src/pcnet.c
@@ -33,6 +33,64 @@ enum {
 	PCNET_IOSIZE_LEN = 0x20,
 };
 
+enum {
+        PCNET_IO_PROM = 0x0,
+        PCNET_IO_RDP = 0x10,
+        PCNET_IO_RAP = 0x12,
+        PCNET_IO_RESET = 0x14,
+        PCNET_IO_BDP = 0x16,
+};
+
+enum {
+        PCNET_IO32_PROM = 0x0,
+        PCNET_IO32_RDP = 0x10,
+        PCNET_IO32_RAP = 0x14,
+        PCNET_IO32_RESET = 0x18,
+        PCNET_IO32_BDP = 0x1c,
+};
+
+enum {
+        CSR0 = 0,
+        CSR1 = 1,
+        CSR2 = 2,
+        CSR4 = 4,
+        CSR15 = 15,
+        /* missed frame count */
+        CSR112 = 112,
+};
+
+enum {
+        BCR18 = 18,
+};
+
+enum {
+        CSR0_INIT = 0x0001,
+        CSR0_START= 0x0002,
+        CSR0_STOP = 0x0004,
+        /* transmit demand */
+        CSR0_TDMD = 0x0008,
+        /* transmitter on */
+        CSR0_TXON = 0x0010,
+        /* receiver on */
+        CSR0_RXON = 0x0020,
+        /* interrupt enable */
+        CSR0_IENA = 0x0040,
+        CSR0_INTR = 0x0080,
+        /* initialisation done */
+        CSR0_IDON = 0x0100,
+        CSR0_TINT = 0x0200,
+        CSR0_RINT = 0x0400,
+        CSR0_MERR = 0x0800,
+        CSR0_MISS = 0x1000,
+        CSR0_CERR = 0x2000,
+        CSR0_BABL = 0x4000,
+        CSR0_ERR  = 0x8000,
+};
+
+enum {
+        BCR18_DWIO = 0x0080,
+};
+
 /* PCnet-PCI II controller initialization includes the reading
  * of the initialization block in memory to obtain the operat-
  * ing parameters. 
@@ -94,6 +152,36 @@ struct pcnet_dummy_private {
 	void __iomem *base;
 };
 
+static unsigned short pcnet_dummy_csr_read16(void __iomem *ioaddr,
+                unsigned short csr)
+{
+        iowrite16(csr, ioaddr + PCNET_IO_RAP);
+        return ioread16(ioaddr + PCNET_IO_RDP);
+}
+
+static unsigned long pcnet_dummy_csr_read32(void __iomem *ioaddr,
+                unsigned long csr)
+{
+        iowrite32(csr, ioaddr + PCNET_IO32_RAP);
+        /* 16 most significant bits are undefined */
+        return ioread32(ioaddr + PCNET_IO32_RDP) & 0xffff;
+}
+
+static void pcnet_dummy_csr_write32(void __iomem *ioaddr,
+                unsigned long data, unsigned long csr)
+{
+        iowrite32(csr, ioaddr + PCNET_IO32_RAP);
+        iowrite32(data, ioaddr + PCNET_IO32_RDP);
+}
+
+static unsigned long pcnet_dummy_bcr_read32(void __iomem *ioaddr,
+                unsigned long bcr)
+{
+        iowrite32(bcr, ioaddr + PCNET_IO32_RAP);
+        /* 16 most significant bits are undefined */
+        return ioread32(ioaddr + PCNET_IO32_BDP) & 0xffff;
+}
+
 static int pcnet_dummy_open(struct net_device *ndev)
 {
 	return 0;
-- 
1.7.5.rc3