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[intelxl] Use 32-byte receive descriptors

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The physical function driver does not allow the virtual function to
request the use of 16-byte receive descriptors.  Switch to using
32-byte receive descriptors.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2019-04-24 16:25:47 +01:00
parent 7676924571
commit f460a436ca
2 changed files with 42 additions and 23 deletions
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39
src/drivers/net/intelxl.h
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@@ -502,6 +502,9 @@ struct intelxl_context_rx {
/** Receive queue data buffer length */
#define INTELXL_CTX_RX_LEN( len ) ( (len) >> 1 )
/** Use 32-byte receive descriptors */
#define INTELXL_CTX_RX_FL_DSIZE 0x10
/** Strip CRC from received packets */
#define INTELXL_CTX_RX_FL_CRCSTRIP 0x20
@@ -605,6 +608,14 @@ struct intelxl_tx_writeback_descriptor {
/** Transmit writeback descriptor complete */
#define INTELXL_TX_WB_FL_DD 0x01
/** Transmit descriptor */
union intelxl_tx_descriptor {
/** Transmit data descriptor */
struct intelxl_tx_data_descriptor data;
/** Transmit writeback descriptor */
struct intelxl_tx_writeback_descriptor wb;
};
/** Receive data descriptor */
struct intelxl_rx_data_descriptor {
/** Buffer address */
@@ -612,7 +623,7 @@ struct intelxl_rx_data_descriptor {
/** Flags */
uint32_t flags;
/** Reserved */
uint8_t reserved[4];
uint8_t reserved[20];
} __attribute__ (( packed ));
/** Receive writeback descriptor */
@@ -627,6 +638,8 @@ struct intelxl_rx_writeback_descriptor {
uint32_t flags;
/** Length */
uint32_t len;
/** Reserved */
uint8_t reserved_c[16];
} __attribute__ (( packed ));
/** Receive writeback descriptor complete */
@@ -642,21 +655,24 @@ struct intelxl_rx_writeback_descriptor {
#define INTELXL_RX_WB_LEN(len) ( ( (len) >> 6 ) & 0x3fff )
/** Packet descriptor */
union intelxl_descriptor {
/** Transmit data descriptor */
struct intelxl_tx_data_descriptor tx;
/** Transmit writeback descriptor */
struct intelxl_tx_writeback_descriptor tx_wb;
union intelxl_rx_descriptor {
/** Receive data descriptor */
struct intelxl_rx_data_descriptor rx;
struct intelxl_rx_data_descriptor data;
/** Receive writeback descriptor */
struct intelxl_rx_writeback_descriptor rx_wb;
struct intelxl_rx_writeback_descriptor wb;
};
/** Descriptor ring */
struct intelxl_ring {
/** Descriptors */
union intelxl_descriptor *desc;
union {
/** Transmit descriptors */
union intelxl_tx_descriptor *tx;
/** Receive descriptors */
union intelxl_rx_descriptor *rx;
/** Raw data */
void *raw;
} desc;
/** Producer index */
unsigned int prod;
/** Consumer index */
@@ -679,14 +695,15 @@ struct intelxl_ring {
*
* @v ring Descriptor ring
* @v count Number of descriptors
* @v len Length of a single descriptor
* @v context Method to program queue context
*/
static inline __attribute__ (( always_inline)) void
intelxl_init_ring ( struct intelxl_ring *ring, unsigned int count,
intelxl_init_ring ( struct intelxl_ring *ring, unsigned int count, size_t len,
int ( * context ) ( struct intelxl_nic *intelxl,
physaddr_t address ) ) {
ring->len = ( count * sizeof ( ring->desc[0] ) );
ring->len = ( count * len );
ring->context = context;
}