Add support for 64-bit DMA transfers, since some 64-bit platforms don't have the ability to generate DMA addresses which can fit in 32-bits.
This code came from the FreeBSD driver, the one from which this driver was derived.
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Alan Ott alan@softiron.co.uk --- Drivers/Net/MarvellYukonDxe/if_msk.c | 50 ++++++++++++++++++++++++++++++--- Drivers/Net/MarvellYukonDxe/if_mskreg.h | 15 ++++++++++ 2 files changed, 61 insertions(+), 4 deletions(-)
diff --git a/Drivers/Net/MarvellYukonDxe/if_msk.c b/Drivers/Net/MarvellYukonDxe/if_msk.c index 2538a52..0eb6d4a 100644 --- a/Drivers/Net/MarvellYukonDxe/if_msk.c +++ b/Drivers/Net/MarvellYukonDxe/if_msk.c @@ -498,6 +498,7 @@ msk_init_rx_ring ( struct msk_rxdesc *rxd; INTN i; INTN prod; + INTN nbuf; EFI_STATUS Status;
sc_if->msk_cdata.msk_rx_cons = 0; @@ -507,15 +508,21 @@ msk_init_rx_ring ( rd = &sc_if->msk_rdata; ZeroMem (rd->msk_rx_ring, MSK_RX_RING_SZ); prod = sc_if->msk_cdata.msk_rx_prod; - for (i = 0; i < MSK_RX_RING_CNT; i++) { + for (i = prod = 0; i < MSK_RX_RING_CNT; i++) { rxd = &sc_if->msk_cdata.msk_rxdesc[prod]; ZeroMem (&rxd->rx_m, sizeof (MSK_DMA_BUF)); rxd->rx_le = &rd->msk_rx_ring[prod]; + MSK_INC (prod, MSK_RX_RING_CNT); + } + nbuf = MSK_RX_BUF_CNT; + prod = 0; + + for (i = 0; i < nbuf; i++) { Status = msk_newbuf (sc_if, prod); if (EFI_ERROR (Status)) { return Status; } - MSK_INC (prod, MSK_RX_RING_CNT); + MSK_RX_INC(prod, MSK_RX_RING_CNT); }
// Update prefetch unit. @@ -538,6 +545,7 @@ msk_init_tx_ring ( sc_if->msk_cdata.msk_tx_prod = 0; sc_if->msk_cdata.msk_tx_cons = 0; sc_if->msk_cdata.msk_tx_cnt = 0; + sc_if->msk_cdata.msk_tx_high_addr = 0;
rd = &sc_if->msk_rdata; ZeroMem (rd->msk_tx_ring, sizeof (struct msk_tx_desc) * MSK_TX_RING_CNT); @@ -562,6 +570,13 @@ msk_discard_rxbuf (
DEBUG ((EFI_D_NET, "Marvell Yukon: discard rxbuf\n"));
+#ifdef MSK_64BIT_DMA + rxd = &sc_if->msk_cdata.msk_rxdesc[idx]; + rx_le = rxd->rx_le; + rx_le->msk_control = htole32(OP_ADDR64 | HW_OWNER); + MSK_INC(idx, MSK_RX_RING_CNT); +#endif + rxd = &sc_if->msk_cdata.msk_rxdesc[idx]; DmaBuffer = &rxd->rx_m; rx_le = rxd->rx_le; @@ -600,6 +615,14 @@ msk_newbuf ( return Status; }
+#ifdef MSK_64BIT_DMA + rx_le = rxd->rx_le; + rx_le->msk_addr = htole32(MSK_ADDR_HI(PhysAddr)); + rx_le->msk_control = htole32(OP_ADDR64 | HW_OWNER); + MSK_INC(idx, MSK_RX_RING_CNT); + rxd = &sc_if->msk_cdata.msk_rxdesc[idx]; +#endif + ZeroMem (&(rxd->rx_m), sizeof (MSK_DMA_BUF)); rxd->rx_m.DmaMapping = Mapping; rxd->rx_m.Buf = Buffer; @@ -1693,6 +1716,19 @@ msk_encap (
control = 0;
+#ifdef MSK_64BIT_DMA + if (MSK_ADDR_HI(BusPhysAddr) != + sc_if->msk_cdata.msk_tx_high_addr) { + sc_if->msk_cdata.msk_tx_high_addr = + MSK_ADDR_HI(BusPhysAddr); + tx_le = &sc_if->msk_rdata.msk_tx_ring[prod]; + tx_le->msk_addr = htole32(MSK_ADDR_HI(BusPhysAddr)); + tx_le->msk_control = htole32(OP_ADDR64 | HW_OWNER); + sc_if->msk_cdata.msk_tx_cnt++; + MSK_INC(prod, MSK_TX_RING_CNT); + } +#endif + si = prod; tx_le = &sc_if->msk_rdata.msk_tx_ring[prod]; tx_le->msk_addr = htole32 (MSK_ADDR_LO (BusPhysAddr)); @@ -1998,6 +2034,12 @@ msk_rxeof ( break; }
+#ifdef MSK_64BIT_DMA + rxd = &sc_if->msk_cdata.msk_rxdesc[(cons + 1) % MSK_RX_RING_CNT]; +#else + rxd = &sc_if->msk_cdata.msk_rxdesc[cons]; +#endif + m = rxd->rx_m; Status = msk_newbuf (sc_if, cons); if (EFI_ERROR (Status)) { @@ -2033,8 +2075,8 @@ msk_rxeof ( } } while (0);
- MSK_INC (sc_if->msk_cdata.msk_rx_cons, MSK_RX_RING_CNT); - MSK_INC (sc_if->msk_cdata.msk_rx_prod, MSK_RX_RING_CNT); + MSK_RX_INC (sc_if->msk_cdata.msk_rx_cons, MSK_RX_RING_CNT); + MSK_RX_INC (sc_if->msk_cdata.msk_rx_prod, MSK_RX_RING_CNT); }
static diff --git a/Drivers/Net/MarvellYukonDxe/if_mskreg.h b/Drivers/Net/MarvellYukonDxe/if_mskreg.h index f0dd05e..4ce0623 100644 --- a/Drivers/Net/MarvellYukonDxe/if_mskreg.h +++ b/Drivers/Net/MarvellYukonDxe/if_mskreg.h @@ -2239,6 +2239,9 @@ struct msk_stat_desc { #define BMU_UDP_CHECK (0x57<<16) // Descr with UDP ext (YUKON only) #define BMU_BBC 0xffff // Bit 15.. 0: Buffer Byte Counter
+#if MAX_ADDRESS > 0xffffffff +#define MSK_64BIT_DMA +#endif #define MSK_TX_RING_CNT 512 #define MSK_RX_RING_CNT 512 #define MSK_RX_BUF_ALIGN 8 @@ -2323,6 +2326,7 @@ struct msk_chain_data { void *msk_tx_ring_map; void *msk_rx_ring_map; // struct msk_rxdesc msk_jumbo_rxdesc[MSK_JUMBO_RX_RING_CNT]; + INTN msk_tx_high_addr; INTN msk_tx_prod; INTN msk_tx_cons; INTN msk_tx_cnt; @@ -2352,6 +2356,17 @@ struct msk_ring_data { #define MSK_STAT_RING_SZ (sizeof (struct msk_stat_desc) * MSK_STAT_RING_CNT)
#define MSK_INC(x, y) ((x) = (x + 1) % y) +#ifdef MSK_64BIT_DMA +#define MSK_RX_INC(x, y) (x) = (x + 2) % y +#define MSK_RX_BUF_CNT (MSK_RX_RING_CNT / 2) +#define MSK_JUMBO_RX_BUF_CNT (MSK_JUMBO_RX_RING_CNT / 2) +#else +#define MSK_RX_INC(x, y) (x) = (x + 1) % y +#define MSK_RX_BUF_CNT MSK_RX_RING_CNT +#define MSK_JUMBO_RX_BUF_CNT MSK_JUMBO_RX_RING_CNT +#endif + +
#define MSK_PCI_BUS 0 #define MSK_PCIX_BUS 1