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-rw-r--r--c/src/libchip/network/cs8900.c.bsp297
1 files changed, 297 insertions, 0 deletions
diff --git a/c/src/libchip/network/cs8900.c.bsp b/c/src/libchip/network/cs8900.c.bsp
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index 0000000000..f445617cd8
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+++ b/c/src/libchip/network/cs8900.c.bsp
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+/*
+ ------------------------------------------------------------------------
+ $Id$
+ ------------------------------------------------------------------------
+
+ My Right Boot, a boot ROM for embedded hardware.
+
+ Copyright Cybertec Pty Ltd, 2000
+ All rights reserved Cybertec Pty Ltd, 2000
+
+ COPYRIGHT (c) 1989-1998.
+ On-Line Applications Research Corporation (OAR).
+
+ The license and distribution terms for this file may be
+ found in the file LICENSE in this distribution or at
+ http://www.OARcorp.com/rtems/license.html.
+
+ ------------------------------------------------------------------------
+
+ CS8900 net boot driver.
+
+ */
+
+#include <rtems/bspIo.h>
+#include <rtems.h>
+
+#include <libchip/cs8900.h>
+
+/*
+ * Our local data.
+ */
+
+#ifdef CS8900_VERBOSE
+static BOOLEAN cs8900_io_verbose;
+#endif
+
+static rtems_isr_void_entry old_handler[CS8900_DEVICES];
+static void *old_parameter[CS8900_DEVICES];
+
+/*
+ * Tables of IO addresses and interrupt levels for each device attached.
+ */
+
+static const unsigned long ethernet_io_base[CS8900_DEVICES] =
+{
+ ETHERNET_BASE
+};
+
+static const unsigned long ethernet_mem_base[CS8900_DEVICES] =
+{
+ ETHERNET_BASE + CS8900_MEMORY_BASE
+};
+
+static const unsigned int ethernet_irq_level[CS8900_DEVICES] =
+{
+ ETHERNET_IRQ_LEVEL
+};
+
+static const unsigned int ethernet_irq_priority[CS8900_DEVICES] =
+{
+ ETHERNET_IRQ_PRIORITY
+};
+
+static const unsigned int ethernet_irq_vector[CS8900_DEVICES] =
+{
+ ETHERNET_IRQ_VECTOR,
+};
+
+void cs8900_io_set_reg (int dev, unsigned short reg, unsigned short data)
+{
+#ifdef CS8900_DATA_BUS_SWAPPED
+ data = (data >> 8) | (data << 8);
+#endif
+
+#ifdef CS8900_VERBOSE
+ if (cs8900_io_verbose)
+ printf ("CS8900: io set reg=0x%04x, data=0x%04x\n", reg, data);
+#endif
+
+ WRITE_REGISTER_16 (ethernet_io_base[dev] + reg, data);
+}
+
+unsigned short cs8900_io_get_reg (int dev, unsigned short reg)
+{
+ unsigned long data;
+
+ READ_REGISTER_16 (ethernet_io_base[dev] + reg, data);
+
+#ifdef CS8900_DATA_BUS_SWAPPED
+ data = (data >> 8) | (data << 8);
+#endif
+
+#ifdef CS8900_VERBOSE
+ if (cs8900_io_verbose)
+ printk ("CS8900: io get reg=0x%04x, data=0x%04x\n", reg, data);
+#endif
+
+ return data;
+}
+
+void cs8900_mem_set_reg (int dev, unsigned long reg, unsigned short data)
+{
+#ifdef CS8900_DATA_BUS_SWAPPED
+ data = (data >> 8) | (data << 8);
+#endif
+
+#ifdef CS8900_VERBOSE
+ if (cs8900_io_verbose)
+ printk ("CS8900: mem set reg=0x%04x, data=0x%04x\n", reg, data);
+#endif
+
+ WRITE_REGISTER_16 (ethernet_io_base[dev] + reg, data);
+}
+
+unsigned short cs8900_mem_get_reg (int dev, unsigned long reg)
+{
+ unsigned short data;
+ READ_REGISTER_16 (ethernet_io_base[dev] + reg, data);
+
+#ifdef CS8900_DATA_BUS_SWAPPED
+ data = (data >> 8) | (data << 8);
+#endif
+
+#ifdef CS8900_VERBOSE
+ if (cs8900_io_verbose)
+ printk ("CS8900: mem get reg=0x%04x, data=0x%04x\n", reg, data);
+#endif
+
+ return data;
+}
+
+void cs8900_put_data_block (int dev, int len, unsigned char *data)
+{
+#ifndef CS8900_DATA_BUS_SWAPPED
+ unsigned short swap_word;
+#endif
+ unsigned short *src = (unsigned short *) ((unsigned long) data);
+ unsigned short *dst = (unsigned short *) (ethernet_mem_base[dev] + CS8900_PP_TxFrameLoc);
+
+ while (len > 1)
+ {
+#ifndef CS8900_DATA_BUS_SWAPPED
+ swap_word = *src++;
+ *dst++ = (swap_word >> 8) | (swap_word << 8);
+#else
+ *dst++ = *src++;
+#endif
+ len -= 2;
+ }
+
+ if (len)
+ {
+#ifndef CS8900_DATA_BUS_SWAPPED
+ swap_word = *src++;
+ *dst++ = (swap_word >> 8) | (swap_word << 8);
+#else
+ *dst++ = *src++;
+#endif
+ }
+}
+
+unsigned short cs8900_get_data_block (int dev, unsigned char *data)
+{
+ unsigned short swap_word;
+ volatile unsigned short *src = (unsigned short *) (ethernet_mem_base[dev] + CS8900_PP_RxLength);
+ unsigned short *dst;
+ unsigned short len;
+ unsigned short rx_len;
+ unsigned short len_odd;
+
+#ifdef CS8900_DATA_BUS_SWAPPED
+ swap_word = *src++;
+ len = (swap_word >> 8) | (swap_word << 8);
+#else
+ len = *src++;
+#endif
+
+ dst = (unsigned short *) ((unsigned long) data);
+
+ len_odd = len & 1;
+ rx_len = len & ~1;
+
+ for (; rx_len; rx_len -= 2)
+ {
+#ifndef CS8900_DATA_BUS_SWAPPED
+ swap_word = *src++;
+ *dst++ = (swap_word >> 8) | (swap_word << 8);
+#else
+ *dst++ = *src++;
+#endif
+ }
+
+ if (len_odd)
+ {
+#ifndef CS8900_DATA_BUS_SWAPPED
+ swap_word = *src++;
+ *dst++ = (swap_word >> 8) | (swap_word << 8);
+#else
+ *dst++ = *src++;
+#endif
+ }
+
+ return len;
+}
+
+void
+cs8900_tx_load (int dev, struct mbuf *m)
+{
+ volatile unsigned short *dst = (unsigned short *) (ethernet_mem_base[dev] + CS8900_PP_TxFrameLoc);
+ unsigned int len;
+ unsigned char *src;
+ int remainder = 0;
+ unsigned char remainder_data = '\0';
+
+ while (m)
+ {
+ /*
+ * We can get empty mbufs from the stack.
+ */
+
+ len = m->m_len;
+ src = mtod (m, unsigned char*);
+
+ if (len)
+ {
+ if (remainder)
+ {
+#ifndef CS8900_DATA_BUS_SWAPPED
+ *dst++ = remainder_data | (*src++ << 8);
+#else
+ *dst++ = *src++ | (remainder_data << 8);
+#endif
+ len--;
+ remainder = 0;
+ }
+
+ if (len & 1)
+ {
+ remainder = 1;
+ len--;
+ }
+
+ for (; len; len -= 2)
+#ifndef CS8900_DATA_BUS_SWAPPED
+ *dst++ = (*src++) | (*(++src) << 8);
+#else
+ *dst++ = (*src++ << 8) | *(++src);
+#endif
+
+ if (remainder)
+ remainder_data = *src++;
+ }
+
+ m = m->m_next;
+ }
+
+ if (remainder)
+ {
+#ifndef CS8900_DATA_BUS_SWAPPED
+ *dst = (unsigned short) remainder_data;
+#else
+ *dst = (unsigned short) (remainder_data << 8);
+#endif
+ }
+}
+
+void cs8900_attach_interrupt (int dev, cs8900_device *cs)
+{
+ rtems_interrupt_catch_with_void (cs8900_interrupt,
+ ethernet_irq_vector[dev],
+ &old_handler[dev],
+ cs,
+ &old_parameter[dev]);
+
+ CF_SIM_WRITE_ICR (CF_BASE,
+ ethernet_irq_level[dev],
+ CF_SIM_ICR_AVEC_AUTO,
+ ethernet_irq_level[dev],
+ ethernet_irq_priority[dev]);
+ CF_SIM_IMR_ENABLE (CF_BASE, 1 << ethernet_irq_level[dev]);
+}
+
+void cs8900_detach_interrupt (int dev)
+{
+ CF_SIM_IMR_DISABLE (CF_BASE, 1 << ethernet_irq_level[dev]);
+
+ rtems_interrupt_catch_with_void (old_handler,
+ ethernet_irq_vector[dev],
+ NULL,
+ old_parameter[dev],
+ NULL);
+}
+
+void cs8900_get_mac_addr (int dev, unsigned char *mac_address)
+{
+ memcpy (mac_address, rct_get_mac_address (dev), 6);
+}
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