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Diffstat (limited to 'qemu/roms/u-boot/drivers/net/e1000_spi.c')
-rw-r--r--qemu/roms/u-boot/drivers/net/e1000_spi.c577
1 files changed, 0 insertions, 577 deletions
diff --git a/qemu/roms/u-boot/drivers/net/e1000_spi.c b/qemu/roms/u-boot/drivers/net/e1000_spi.c
deleted file mode 100644
index 93043a1ad..000000000
--- a/qemu/roms/u-boot/drivers/net/e1000_spi.c
+++ /dev/null
@@ -1,577 +0,0 @@
-#include "e1000.h"
-#include <linux/compiler.h>
-
-/*-----------------------------------------------------------------------
- * SPI transfer
- *
- * This writes "bitlen" bits out the SPI MOSI port and simultaneously clocks
- * "bitlen" bits in the SPI MISO port. That's just the way SPI works.
- *
- * The source of the outgoing bits is the "dout" parameter and the
- * destination of the input bits is the "din" parameter. Note that "dout"
- * and "din" can point to the same memory location, in which case the
- * input data overwrites the output data (since both are buffered by
- * temporary variables, this is OK).
- *
- * This may be interrupted with Ctrl-C if "intr" is true, otherwise it will
- * never return an error.
- */
-static int e1000_spi_xfer(struct e1000_hw *hw, unsigned int bitlen,
- const void *dout_mem, void *din_mem, bool intr)
-{
- const uint8_t *dout = dout_mem;
- uint8_t *din = din_mem;
-
- uint8_t mask = 0;
- uint32_t eecd;
- unsigned long i;
-
- /* Pre-read the control register */
- eecd = E1000_READ_REG(hw, EECD);
-
- /* Iterate over each bit */
- for (i = 0, mask = 0x80; i < bitlen; i++, mask = (mask >> 1)?:0x80) {
- /* Check for interrupt */
- if (intr && ctrlc())
- return -1;
-
- /* Determine the output bit */
- if (dout && dout[i >> 3] & mask)
- eecd |= E1000_EECD_DI;
- else
- eecd &= ~E1000_EECD_DI;
-
- /* Write the output bit and wait 50us */
- E1000_WRITE_REG(hw, EECD, eecd);
- E1000_WRITE_FLUSH(hw);
- udelay(50);
-
- /* Poke the clock (waits 50us) */
- e1000_raise_ee_clk(hw, &eecd);
-
- /* Now read the input bit */
- eecd = E1000_READ_REG(hw, EECD);
- if (din) {
- if (eecd & E1000_EECD_DO)
- din[i >> 3] |= mask;
- else
- din[i >> 3] &= ~mask;
- }
-
- /* Poke the clock again (waits 50us) */
- e1000_lower_ee_clk(hw, &eecd);
- }
-
- /* Now clear any remaining bits of the input */
- if (din && (i & 7))
- din[i >> 3] &= ~((mask << 1) - 1);
-
- return 0;
-}
-
-#ifdef CONFIG_E1000_SPI_GENERIC
-static inline struct e1000_hw *e1000_hw_from_spi(struct spi_slave *spi)
-{
- return container_of(spi, struct e1000_hw, spi);
-}
-
-/* Not sure why all of these are necessary */
-void spi_init_r(void) { /* Nothing to do */ }
-void spi_init_f(void) { /* Nothing to do */ }
-void spi_init(void) { /* Nothing to do */ }
-
-struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
- unsigned int max_hz, unsigned int mode)
-{
- /* Find the right PCI device */
- struct e1000_hw *hw = e1000_find_card(bus);
- if (!hw) {
- printf("ERROR: No such e1000 device: e1000#%u\n", bus);
- return NULL;
- }
-
- /* Make sure it has an SPI chip */
- if (hw->eeprom.type != e1000_eeprom_spi) {
- E1000_ERR(hw->nic, "No attached SPI EEPROM found!\n");
- return NULL;
- }
-
- /* Argument sanity checks */
- if (cs != 0) {
- E1000_ERR(hw->nic, "No such SPI chip: %u\n", cs);
- return NULL;
- }
- if (mode != SPI_MODE_0) {
- E1000_ERR(hw->nic, "Only SPI MODE-0 is supported!\n");
- return NULL;
- }
-
- /* TODO: Use max_hz somehow */
- E1000_DBG(hw->nic, "EEPROM SPI access requested\n");
- return &hw->spi;
-}
-
-void spi_free_slave(struct spi_slave *spi)
-{
- __maybe_unused struct e1000_hw *hw = e1000_hw_from_spi(spi);
- E1000_DBG(hw->nic, "EEPROM SPI access released\n");
-}
-
-int spi_claim_bus(struct spi_slave *spi)
-{
- struct e1000_hw *hw = e1000_hw_from_spi(spi);
-
- if (e1000_acquire_eeprom(hw)) {
- E1000_ERR(hw->nic, "EEPROM SPI cannot be acquired!\n");
- return -1;
- }
-
- return 0;
-}
-
-void spi_release_bus(struct spi_slave *spi)
-{
- struct e1000_hw *hw = e1000_hw_from_spi(spi);
- e1000_release_eeprom(hw);
-}
-
-/* Skinny wrapper around e1000_spi_xfer */
-int spi_xfer(struct spi_slave *spi, unsigned int bitlen,
- const void *dout_mem, void *din_mem, unsigned long flags)
-{
- struct e1000_hw *hw = e1000_hw_from_spi(spi);
- int ret;
-
- if (flags & SPI_XFER_BEGIN)
- e1000_standby_eeprom(hw);
-
- ret = e1000_spi_xfer(hw, bitlen, dout_mem, din_mem, true);
-
- if (flags & SPI_XFER_END)
- e1000_standby_eeprom(hw);
-
- return ret;
-}
-
-#endif /* not CONFIG_E1000_SPI_GENERIC */
-
-#ifdef CONFIG_CMD_E1000
-
-/* The EEPROM opcodes */
-#define SPI_EEPROM_ENABLE_WR 0x06
-#define SPI_EEPROM_DISABLE_WR 0x04
-#define SPI_EEPROM_WRITE_STATUS 0x01
-#define SPI_EEPROM_READ_STATUS 0x05
-#define SPI_EEPROM_WRITE_PAGE 0x02
-#define SPI_EEPROM_READ_PAGE 0x03
-
-/* The EEPROM status bits */
-#define SPI_EEPROM_STATUS_BUSY 0x01
-#define SPI_EEPROM_STATUS_WREN 0x02
-
-static int e1000_spi_eeprom_enable_wr(struct e1000_hw *hw, bool intr)
-{
- u8 op[] = { SPI_EEPROM_ENABLE_WR };
- e1000_standby_eeprom(hw);
- return e1000_spi_xfer(hw, 8*sizeof(op), op, NULL, intr);
-}
-
-/*
- * These have been tested to perform correctly, but they are not used by any
- * of the EEPROM commands at this time.
- */
-#if 0
-static int e1000_spi_eeprom_disable_wr(struct e1000_hw *hw, bool intr)
-{
- u8 op[] = { SPI_EEPROM_DISABLE_WR };
- e1000_standby_eeprom(hw);
- return e1000_spi_xfer(hw, 8*sizeof(op), op, NULL, intr);
-}
-
-static int e1000_spi_eeprom_write_status(struct e1000_hw *hw,
- u8 status, bool intr)
-{
- u8 op[] = { SPI_EEPROM_WRITE_STATUS, status };
- e1000_standby_eeprom(hw);
- return e1000_spi_xfer(hw, 8*sizeof(op), op, NULL, intr);
-}
-#endif
-
-static int e1000_spi_eeprom_read_status(struct e1000_hw *hw, bool intr)
-{
- u8 op[] = { SPI_EEPROM_READ_STATUS, 0 };
- e1000_standby_eeprom(hw);
- if (e1000_spi_xfer(hw, 8*sizeof(op), op, op, intr))
- return -1;
- return op[1];
-}
-
-static int e1000_spi_eeprom_write_page(struct e1000_hw *hw,
- const void *data, u16 off, u16 len, bool intr)
-{
- u8 op[] = {
- SPI_EEPROM_WRITE_PAGE,
- (off >> (hw->eeprom.address_bits - 8)) & 0xff, off & 0xff
- };
-
- e1000_standby_eeprom(hw);
-
- if (e1000_spi_xfer(hw, 8 + hw->eeprom.address_bits, op, NULL, intr))
- return -1;
- if (e1000_spi_xfer(hw, len << 3, data, NULL, intr))
- return -1;
-
- return 0;
-}
-
-static int e1000_spi_eeprom_read_page(struct e1000_hw *hw,
- void *data, u16 off, u16 len, bool intr)
-{
- u8 op[] = {
- SPI_EEPROM_READ_PAGE,
- (off >> (hw->eeprom.address_bits - 8)) & 0xff, off & 0xff
- };
-
- e1000_standby_eeprom(hw);
-
- if (e1000_spi_xfer(hw, 8 + hw->eeprom.address_bits, op, NULL, intr))
- return -1;
- if (e1000_spi_xfer(hw, len << 3, NULL, data, intr))
- return -1;
-
- return 0;
-}
-
-static int e1000_spi_eeprom_poll_ready(struct e1000_hw *hw, bool intr)
-{
- int status;
- while ((status = e1000_spi_eeprom_read_status(hw, intr)) >= 0) {
- if (!(status & SPI_EEPROM_STATUS_BUSY))
- return 0;
- }
- return -1;
-}
-
-static int e1000_spi_eeprom_dump(struct e1000_hw *hw,
- void *data, u16 off, unsigned int len, bool intr)
-{
- /* Interruptibly wait for the EEPROM to be ready */
- if (e1000_spi_eeprom_poll_ready(hw, intr))
- return -1;
-
- /* Dump each page in sequence */
- while (len) {
- /* Calculate the data bytes on this page */
- u16 pg_off = off & (hw->eeprom.page_size - 1);
- u16 pg_len = hw->eeprom.page_size - pg_off;
- if (pg_len > len)
- pg_len = len;
-
- /* Now dump the page */
- if (e1000_spi_eeprom_read_page(hw, data, off, pg_len, intr))
- return -1;
-
- /* Otherwise go on to the next page */
- len -= pg_len;
- off += pg_len;
- data += pg_len;
- }
-
- /* We're done! */
- return 0;
-}
-
-static int e1000_spi_eeprom_program(struct e1000_hw *hw,
- const void *data, u16 off, u16 len, bool intr)
-{
- /* Program each page in sequence */
- while (len) {
- /* Calculate the data bytes on this page */
- u16 pg_off = off & (hw->eeprom.page_size - 1);
- u16 pg_len = hw->eeprom.page_size - pg_off;
- if (pg_len > len)
- pg_len = len;
-
- /* Interruptibly wait for the EEPROM to be ready */
- if (e1000_spi_eeprom_poll_ready(hw, intr))
- return -1;
-
- /* Enable write access */
- if (e1000_spi_eeprom_enable_wr(hw, intr))
- return -1;
-
- /* Now program the page */
- if (e1000_spi_eeprom_write_page(hw, data, off, pg_len, intr))
- return -1;
-
- /* Otherwise go on to the next page */
- len -= pg_len;
- off += pg_len;
- data += pg_len;
- }
-
- /* Wait for the last write to complete */
- if (e1000_spi_eeprom_poll_ready(hw, intr))
- return -1;
-
- /* We're done! */
- return 0;
-}
-
-static int do_e1000_spi_show(cmd_tbl_t *cmdtp, struct e1000_hw *hw,
- int argc, char * const argv[])
-{
- unsigned int length = 0;
- u16 i, offset = 0;
- u8 *buffer;
- int err;
-
- if (argc > 2) {
- cmd_usage(cmdtp);
- return 1;
- }
-
- /* Parse the offset and length */
- if (argc >= 1)
- offset = simple_strtoul(argv[0], NULL, 0);
- if (argc == 2)
- length = simple_strtoul(argv[1], NULL, 0);
- else if (offset < (hw->eeprom.word_size << 1))
- length = (hw->eeprom.word_size << 1) - offset;
-
- /* Extra sanity checks */
- if (!length) {
- E1000_ERR(hw->nic, "Requested zero-sized dump!\n");
- return 1;
- }
- if ((0x10000 < length) || (0x10000 - length < offset)) {
- E1000_ERR(hw->nic, "Can't dump past 0xFFFF!\n");
- return 1;
- }
-
- /* Allocate a buffer to hold stuff */
- buffer = malloc(length);
- if (!buffer) {
- E1000_ERR(hw->nic, "Out of Memory!\n");
- return 1;
- }
-
- /* Acquire the EEPROM and perform the dump */
- if (e1000_acquire_eeprom(hw)) {
- E1000_ERR(hw->nic, "EEPROM SPI cannot be acquired!\n");
- free(buffer);
- return 1;
- }
- err = e1000_spi_eeprom_dump(hw, buffer, offset, length, true);
- e1000_release_eeprom(hw);
- if (err) {
- E1000_ERR(hw->nic, "Interrupted!\n");
- free(buffer);
- return 1;
- }
-
- /* Now hexdump the result */
- printf("%s: ===== Intel e1000 EEPROM (0x%04hX - 0x%04hX) =====",
- hw->nic->name, offset, offset + length - 1);
- for (i = 0; i < length; i++) {
- if ((i & 0xF) == 0)
- printf("\n%s: %04hX: ", hw->nic->name, offset + i);
- else if ((i & 0xF) == 0x8)
- printf(" ");
- printf(" %02hx", buffer[i]);
- }
- printf("\n");
-
- /* Success! */
- free(buffer);
- return 0;
-}
-
-static int do_e1000_spi_dump(cmd_tbl_t *cmdtp, struct e1000_hw *hw,
- int argc, char * const argv[])
-{
- unsigned int length;
- u16 offset;
- void *dest;
-
- if (argc != 3) {
- cmd_usage(cmdtp);
- return 1;
- }
-
- /* Parse the arguments */
- dest = (void *)simple_strtoul(argv[0], NULL, 16);
- offset = simple_strtoul(argv[1], NULL, 0);
- length = simple_strtoul(argv[2], NULL, 0);
-
- /* Extra sanity checks */
- if (!length) {
- E1000_ERR(hw->nic, "Requested zero-sized dump!\n");
- return 1;
- }
- if ((0x10000 < length) || (0x10000 - length < offset)) {
- E1000_ERR(hw->nic, "Can't dump past 0xFFFF!\n");
- return 1;
- }
-
- /* Acquire the EEPROM */
- if (e1000_acquire_eeprom(hw)) {
- E1000_ERR(hw->nic, "EEPROM SPI cannot be acquired!\n");
- return 1;
- }
-
- /* Perform the programming operation */
- if (e1000_spi_eeprom_dump(hw, dest, offset, length, true) < 0) {
- E1000_ERR(hw->nic, "Interrupted!\n");
- e1000_release_eeprom(hw);
- return 1;
- }
-
- e1000_release_eeprom(hw);
- printf("%s: ===== EEPROM DUMP COMPLETE =====\n", hw->nic->name);
- return 0;
-}
-
-static int do_e1000_spi_program(cmd_tbl_t *cmdtp, struct e1000_hw *hw,
- int argc, char * const argv[])
-{
- unsigned int length;
- const void *source;
- u16 offset;
-
- if (argc != 3) {
- cmd_usage(cmdtp);
- return 1;
- }
-
- /* Parse the arguments */
- source = (const void *)simple_strtoul(argv[0], NULL, 16);
- offset = simple_strtoul(argv[1], NULL, 0);
- length = simple_strtoul(argv[2], NULL, 0);
-
- /* Acquire the EEPROM */
- if (e1000_acquire_eeprom(hw)) {
- E1000_ERR(hw->nic, "EEPROM SPI cannot be acquired!\n");
- return 1;
- }
-
- /* Perform the programming operation */
- if (e1000_spi_eeprom_program(hw, source, offset, length, true) < 0) {
- E1000_ERR(hw->nic, "Interrupted!\n");
- e1000_release_eeprom(hw);
- return 1;
- }
-
- e1000_release_eeprom(hw);
- printf("%s: ===== EEPROM PROGRAMMED =====\n", hw->nic->name);
- return 0;
-}
-
-static int do_e1000_spi_checksum(cmd_tbl_t *cmdtp, struct e1000_hw *hw,
- int argc, char * const argv[])
-{
- uint16_t i, length, checksum = 0, checksum_reg;
- uint16_t *buffer;
- bool upd;
-
- if (argc == 0)
- upd = 0;
- else if ((argc == 1) && !strcmp(argv[0], "update"))
- upd = 1;
- else {
- cmd_usage(cmdtp);
- return 1;
- }
-
- /* Allocate a temporary buffer */
- length = sizeof(uint16_t) * (EEPROM_CHECKSUM_REG + 1);
- buffer = malloc(length);
- if (!buffer) {
- E1000_ERR(hw->nic, "Unable to allocate EEPROM buffer!\n");
- return 1;
- }
-
- /* Acquire the EEPROM */
- if (e1000_acquire_eeprom(hw)) {
- E1000_ERR(hw->nic, "EEPROM SPI cannot be acquired!\n");
- return 1;
- }
-
- /* Read the EEPROM */
- if (e1000_spi_eeprom_dump(hw, buffer, 0, length, true) < 0) {
- E1000_ERR(hw->nic, "Interrupted!\n");
- e1000_release_eeprom(hw);
- return 1;
- }
-
- /* Compute the checksum and read the expected value */
- for (i = 0; i < EEPROM_CHECKSUM_REG; i++)
- checksum += le16_to_cpu(buffer[i]);
- checksum = ((uint16_t)EEPROM_SUM) - checksum;
- checksum_reg = le16_to_cpu(buffer[i]);
-
- /* Verify it! */
- if (checksum_reg == checksum) {
- printf("%s: INFO: EEPROM checksum is correct! (0x%04hx)\n",
- hw->nic->name, checksum);
- e1000_release_eeprom(hw);
- return 0;
- }
-
- /* Hrm, verification failed, print an error */
- E1000_ERR(hw->nic, "EEPROM checksum is incorrect!\n");
- E1000_ERR(hw->nic, " ...register was 0x%04hx, calculated 0x%04hx\n",
- checksum_reg, checksum);
-
- /* If they didn't ask us to update it, just return an error */
- if (!upd) {
- e1000_release_eeprom(hw);
- return 1;
- }
-
- /* Ok, correct it! */
- printf("%s: Reprogramming the EEPROM checksum...\n", hw->nic->name);
- buffer[i] = cpu_to_le16(checksum);
- if (e1000_spi_eeprom_program(hw, &buffer[i], i * sizeof(uint16_t),
- sizeof(uint16_t), true)) {
- E1000_ERR(hw->nic, "Interrupted!\n");
- e1000_release_eeprom(hw);
- return 1;
- }
-
- e1000_release_eeprom(hw);
- return 0;
-}
-
-int do_e1000_spi(cmd_tbl_t *cmdtp, struct e1000_hw *hw,
- int argc, char * const argv[])
-{
- if (argc < 1) {
- cmd_usage(cmdtp);
- return 1;
- }
-
- /* Make sure it has an SPI chip */
- if (hw->eeprom.type != e1000_eeprom_spi) {
- E1000_ERR(hw->nic, "No attached SPI EEPROM found!\n");
- return 1;
- }
-
- /* Check the eeprom sub-sub-command arguments */
- if (!strcmp(argv[0], "show"))
- return do_e1000_spi_show(cmdtp, hw, argc - 1, argv + 1);
-
- if (!strcmp(argv[0], "dump"))
- return do_e1000_spi_dump(cmdtp, hw, argc - 1, argv + 1);
-
- if (!strcmp(argv[0], "program"))
- return do_e1000_spi_program(cmdtp, hw, argc - 1, argv + 1);
-
- if (!strcmp(argv[0], "checksum"))
- return do_e1000_spi_checksum(cmdtp, hw, argc - 1, argv + 1);
-
- cmd_usage(cmdtp);
- return 1;
-}
-
-#endif /* not CONFIG_CMD_E1000 */