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Merge pull request #2585 from cesanta/fai

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prefix PHY-related constants
This commit is contained in:
Sergio R. Caprile 2024-01-22 18:45:00 -03:00 committed by GitHub
commit 08f05d6f8c
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GPG Key ID: B5690EEEBB952194
5 changed files with 114 additions and 78 deletions
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88
mongoose.c
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@ -14383,7 +14383,12 @@ static uint8_t s_rxbuf[ETH_DESC_CNT][ETH_PKT_SIZE] MG_64BIT_ALIGNED;
static uint8_t s_txbuf[ETH_DESC_CNT][ETH_PKT_SIZE] MG_64BIT_ALIGNED;
static struct mg_tcpip_if *s_ifp; // MIP interface
enum { PHY_BCR = 0, PHY_BSR = 1, PHY_ID1 = 2, PHY_ID2 = 3 };
enum {
MG_PHYREG_BCR = 0,
MG_PHYREG_BSR = 1,
MG_PHYREG_ID1 = 2,
MG_PHYREG_ID2 = 3
};
static uint16_t enet_phy_read(uint8_t addr, uint8_t reg) {
ENET->EIR |= MG_BIT(23); // MII interrupt clear
@ -14400,8 +14405,8 @@ static void enet_phy_write(uint8_t addr, uint8_t reg, uint16_t val) {
}
static uint32_t enet_phy_id(uint8_t addr) {
uint16_t phy_id1 = enet_phy_read(addr, PHY_ID1);
uint16_t phy_id2 = enet_phy_read(addr, PHY_ID2);
uint16_t phy_id1 = enet_phy_read(addr, MG_PHYREG_ID1);
uint16_t phy_id2 = enet_phy_read(addr, MG_PHYREG_ID2);
return (uint32_t) phy_id1 << 16 | phy_id2;
}
@ -14435,8 +14440,9 @@ static bool mg_tcpip_driver_imxrt_init(struct mg_tcpip_if *ifp) {
int cr = (d == NULL || d->mdc_cr < 0) ? 24 : d->mdc_cr;
ENET->MSCR = (1 << 8) | ((cr & 0x3f) << 1); // HOLDTIME 2 clks
enet_phy_write(d->phy_addr, PHY_BCR, MG_BIT(15)); // Reset PHY
enet_phy_write(d->phy_addr, PHY_BCR, MG_BIT(12)); // Set autonegotiation
enet_phy_write(d->phy_addr, MG_PHYREG_BCR, MG_BIT(15)); // Reset PHY
enet_phy_write(d->phy_addr, MG_PHYREG_BCR,
MG_BIT(12)); // Set autonegotiation
// PHY: Enable 50 MHz external ref clock at XI (preserve defaults)
uint32_t id = enet_phy_id(d->phy_addr);
@ -14502,7 +14508,7 @@ static size_t mg_tcpip_driver_imxrt_tx(const void *buf, size_t len,
static bool mg_tcpip_driver_imxrt_up(struct mg_tcpip_if *ifp) {
struct mg_tcpip_driver_imxrt_data *d =
(struct mg_tcpip_driver_imxrt_data *) ifp->driver_data;
uint32_t bsr = enet_phy_read(d->phy_addr, PHY_BSR);
uint32_t bsr = enet_phy_read(d->phy_addr, MG_PHYREG_BSR);
bool up = bsr & MG_BIT(2) ? 1 : 0;
if ((ifp->state == MG_TCPIP_STATE_DOWN) && up) { // link state just went up
// tmp = reg with flags set to the most likely situation: 100M full-duplex
@ -14579,11 +14585,11 @@ static uint8_t s_txno; // Current TX descriptor
static uint8_t s_rxno; // Current RX descriptor
static struct mg_tcpip_if *s_ifp; // MIP interface
enum { PHY_ADDR = 0, PHY_BCR = 0, PHY_BSR = 1 };
enum { MG_PHY_ADDR = 0, MG_PHYREG_BCR = 0, MG_PHYREG_BSR = 1 };
#define PHY_BCR_DUPLEX_MODE_Msk MG_BIT(8)
#define PHY_BCR_SPEED_Msk MG_BIT(13)
#define PHY_BSR_LINK_STATUS_Msk MG_BIT(2)
#define MG_PHYREGBIT_BCR_DUPLEX_MODE MG_BIT(8)
#define MG_PHYREGBIT_BCR_SPEED MG_BIT(13)
#define MG_PHYREGBIT_BSR_LINK_STATUS MG_BIT(2)
static uint16_t eth_read_phy(uint8_t addr, uint8_t reg) {
GMAC_REGS->GMAC_MAN = GMAC_MAN_CLTTO_Msk |
@ -14621,8 +14627,12 @@ int get_clock_rate(struct mg_tcpip_driver_same54_data *d) {
case GCLK_GENCTRL_SRC_XOSC1_Val:
mclk = 32000000UL; /* 32MHz */
break;
case GCLK_GENCTRL_SRC_OSCULP32K_Val: mclk = 32000UL; break;
case GCLK_GENCTRL_SRC_XOSC32K_Val: mclk = 32000UL; break;
case GCLK_GENCTRL_SRC_OSCULP32K_Val:
mclk = 32000UL;
break;
case GCLK_GENCTRL_SRC_XOSC32K_Val:
mclk = 32000UL;
break;
case GCLK_GENCTRL_SRC_DFLL_Val:
mclk = 48000000UL; /* 48MHz */
break;
@ -14632,7 +14642,8 @@ int get_clock_rate(struct mg_tcpip_driver_same54_data *d) {
case GCLK_GENCTRL_SRC_DPLL1_Val:
mclk = 200000000UL; /* 200MHz */
break;
default: mclk = 200000000UL; /* 200MHz */
default:
mclk = 200000000UL; /* 200MHz */
}
mclk /= div;
@ -14723,16 +14734,16 @@ static size_t mg_tcpip_driver_same54_tx(const void *buf, size_t len,
}
static bool mg_tcpip_driver_same54_up(struct mg_tcpip_if *ifp) {
uint16_t bsr = eth_read_phy(PHY_ADDR, PHY_BSR);
bool up = bsr & PHY_BSR_LINK_STATUS_Msk ? 1 : 0;
uint16_t bsr = eth_read_phy(MG_PHY_ADDR, MG_PHYREG_BSR);
bool up = bsr & MG_PHYREGBIT_BSR_LINK_STATUS ? 1 : 0;
// If PHY is ready, update NCFGR accordingly
if (ifp->state == MG_TCPIP_STATE_DOWN && up) {
uint16_t bcr = eth_read_phy(PHY_ADDR, PHY_BCR);
bool fd = bcr & PHY_BCR_DUPLEX_MODE_Msk ? 1 : 0;
bool spd = bcr & PHY_BCR_SPEED_Msk ? 1 : 0;
GMAC_REGS->GMAC_NCFGR =
(GMAC_REGS->GMAC_NCFGR & ~(GMAC_NCFGR_SPD_Msk | PHY_BCR_SPEED_Msk)) |
uint16_t bcr = eth_read_phy(MG_PHY_ADDR, MG_PHYREG_BCR);
bool fd = bcr & MG_PHYREGBIT_BCR_DUPLEX_MODE ? 1 : 0;
bool spd = bcr & MG_PHYREGBIT_BCR_SPEED ? 1 : 0;
GMAC_REGS->GMAC_NCFGR = (GMAC_REGS->GMAC_NCFGR &
~(GMAC_NCFGR_SPD_Msk | MG_PHYREGBIT_BCR_SPEED)) |
GMAC_NCFGR_SPD(spd) | GMAC_NCFGR_FD(fd);
}
@ -14807,7 +14818,13 @@ static uint8_t s_txno; // Current TX descriptor
static uint8_t s_rxno; // Current RX descriptor
static struct mg_tcpip_if *s_ifp; // MIP interface
enum { PHY_BCR = 0, PHY_BSR = 1, PHY_ID1 = 2, PHY_ID2 = 3, PHY_CSCR = 31 };
enum {
MG_PHYREG_BCR = 0,
MG_PHYREG_BSR = 1,
MG_PHYREG_ID1 = 2,
MG_PHYREG_ID2 = 3,
MG_PHYREG_CSCR = 31
};
static uint32_t eth_read_phy(uint8_t addr, uint8_t reg) {
ETH->MACMIIAR &= (7 << 2);
@ -14915,8 +14932,8 @@ static bool mg_tcpip_driver_stm32f_init(struct mg_tcpip_if *ifp) {
ETH->MACIMR = MG_BIT(3) | MG_BIT(9); // Mask timestamp & PMT IT
ETH->MACFCR = MG_BIT(7); // Disable zero quarta pause
// ETH->MACFFR = MG_BIT(31); // Receive all
eth_write_phy(phy_addr, PHY_BCR, MG_BIT(15)); // Reset PHY
eth_write_phy(phy_addr, PHY_BCR, MG_BIT(12)); // Set autonegotiation
eth_write_phy(phy_addr, MG_PHYREG_BCR, MG_BIT(15)); // Reset PHY
eth_write_phy(phy_addr, MG_PHYREG_BCR, MG_BIT(12)); // Set autonegotiation
ETH->DMARDLAR = (uint32_t) (uintptr_t) s_rxdesc; // RX descriptors
ETH->DMATDLAR = (uint32_t) (uintptr_t) s_txdesc; // RX descriptors
ETH->DMAIER = MG_BIT(6) | MG_BIT(16); // RIE, NISE
@ -14925,8 +14942,8 @@ static bool mg_tcpip_driver_stm32f_init(struct mg_tcpip_if *ifp) {
ETH->DMAOMR =
MG_BIT(1) | MG_BIT(13) | MG_BIT(21) | MG_BIT(25); // SR, ST, TSF, RSF
MG_DEBUG(("PHY ID: %#04hx %#04hx", eth_read_phy(phy_addr, PHY_ID1),
eth_read_phy(phy_addr, PHY_ID2)));
MG_DEBUG(("PHY ID: %#04hx %#04hx", eth_read_phy(phy_addr, MG_PHYREG_ID1),
eth_read_phy(phy_addr, MG_PHYREG_ID2)));
// MAC address filtering
ETH->MACA0HR = ((uint32_t) ifp->mac[5] << 8U) | ifp->mac[4];
@ -14963,10 +14980,10 @@ static bool mg_tcpip_driver_stm32f_up(struct mg_tcpip_if *ifp) {
struct mg_tcpip_driver_stm32f_data *d =
(struct mg_tcpip_driver_stm32f_data *) ifp->driver_data;
uint8_t phy_addr = d == NULL ? 0 : d->phy_addr;
uint32_t bsr = eth_read_phy(phy_addr, PHY_BSR);
uint32_t bsr = eth_read_phy(phy_addr, MG_PHYREG_BSR);
bool up = bsr & MG_BIT(2) ? 1 : 0;
if ((ifp->state == MG_TCPIP_STATE_DOWN) && up) { // link state just went up
uint32_t scsr = eth_read_phy(phy_addr, PHY_CSCR);
uint32_t scsr = eth_read_phy(phy_addr, MG_PHYREG_CSCR);
// tmp = reg with flags set to the most likely situation: 100M full-duplex
// if(link is slow or half) set flags otherwise
// reg = tmp
@ -15063,10 +15080,10 @@ static uint8_t s_rxbuf[ETH_DESC_CNT][ETH_PKT_SIZE]; // RX ethernet buffers
static uint8_t s_txbuf[ETH_DESC_CNT][ETH_PKT_SIZE]; // TX ethernet buffers
static struct mg_tcpip_if *s_ifp; // MIP interface
enum {
PHY_ADDR = 0,
PHY_BCR = 0,
PHY_BSR = 1,
PHY_CSCR = 31
MG_PHY_ADDR = 0,
MG_PHYREG_BCR = 0,
MG_PHYREG_BSR = 1,
MG_PHYREG_CSCR = 31
}; // PHY constants
static uint32_t eth_read_phy(uint8_t addr, uint8_t reg) {
@ -15191,8 +15208,9 @@ static bool mg_tcpip_driver_stm32h_init(struct mg_tcpip_if *ifp) {
ETH->MACIER = 0; // Do not enable additional irq sources (reset value)
ETH->MACTFCR = MG_BIT(7); // Disable zero-quanta pause
// ETH->MACPFR = MG_BIT(31); // Receive all
eth_write_phy(PHY_ADDR, PHY_BCR, MG_BIT(15)); // Reset PHY
eth_write_phy(PHY_ADDR, PHY_BCR, MG_BIT(12)); // Set autonegotiation
eth_write_phy(MG_PHY_ADDR, MG_PHYREG_BCR, MG_BIT(15)); // Reset PHY
eth_write_phy(MG_PHY_ADDR, MG_PHYREG_BCR,
MG_BIT(12)); // Set autonegotiation
ETH->DMACRDLAR =
(uint32_t) (uintptr_t) s_rxdesc; // RX descriptors start address
ETH->DMACRDRLR = ETH_DESC_CNT - 1; // ring length
@ -15247,10 +15265,10 @@ static size_t mg_tcpip_driver_stm32h_tx(const void *buf, size_t len,
}
static bool mg_tcpip_driver_stm32h_up(struct mg_tcpip_if *ifp) {
uint32_t bsr = eth_read_phy(PHY_ADDR, PHY_BSR);
uint32_t bsr = eth_read_phy(MG_PHY_ADDR, MG_PHYREG_BSR);
bool up = bsr & MG_BIT(2) ? 1 : 0;
if ((ifp->state == MG_TCPIP_STATE_DOWN) && up) { // link state just went up
uint32_t scsr = eth_read_phy(PHY_ADDR, PHY_CSCR);
uint32_t scsr = eth_read_phy(MG_PHY_ADDR, MG_PHYREG_CSCR);
// tmp = reg with flags set to the most likely situation: 100M full-duplex
// if(link is slow or half) set flags otherwise
// reg = tmp

18
src/drivers/imxrt.c
View File

@ -48,7 +48,12 @@ static uint8_t s_rxbuf[ETH_DESC_CNT][ETH_PKT_SIZE] MG_64BIT_ALIGNED;
static uint8_t s_txbuf[ETH_DESC_CNT][ETH_PKT_SIZE] MG_64BIT_ALIGNED;
static struct mg_tcpip_if *s_ifp; // MIP interface
enum { PHY_BCR = 0, PHY_BSR = 1, PHY_ID1 = 2, PHY_ID2 = 3 };
enum {
MG_PHYREG_BCR = 0,
MG_PHYREG_BSR = 1,
MG_PHYREG_ID1 = 2,
MG_PHYREG_ID2 = 3
};
static uint16_t enet_phy_read(uint8_t addr, uint8_t reg) {
ENET->EIR |= MG_BIT(23); // MII interrupt clear
@ -65,8 +70,8 @@ static void enet_phy_write(uint8_t addr, uint8_t reg, uint16_t val) {
}
static uint32_t enet_phy_id(uint8_t addr) {
uint16_t phy_id1 = enet_phy_read(addr, PHY_ID1);
uint16_t phy_id2 = enet_phy_read(addr, PHY_ID2);
uint16_t phy_id1 = enet_phy_read(addr, MG_PHYREG_ID1);
uint16_t phy_id2 = enet_phy_read(addr, MG_PHYREG_ID2);
return (uint32_t) phy_id1 << 16 | phy_id2;
}
@ -100,8 +105,9 @@ static bool mg_tcpip_driver_imxrt_init(struct mg_tcpip_if *ifp) {
int cr = (d == NULL || d->mdc_cr < 0) ? 24 : d->mdc_cr;
ENET->MSCR = (1 << 8) | ((cr & 0x3f) << 1); // HOLDTIME 2 clks
enet_phy_write(d->phy_addr, PHY_BCR, MG_BIT(15)); // Reset PHY
enet_phy_write(d->phy_addr, PHY_BCR, MG_BIT(12)); // Set autonegotiation
enet_phy_write(d->phy_addr, MG_PHYREG_BCR, MG_BIT(15)); // Reset PHY
enet_phy_write(d->phy_addr, MG_PHYREG_BCR,
MG_BIT(12)); // Set autonegotiation
// PHY: Enable 50 MHz external ref clock at XI (preserve defaults)
uint32_t id = enet_phy_id(d->phy_addr);
@ -167,7 +173,7 @@ static size_t mg_tcpip_driver_imxrt_tx(const void *buf, size_t len,
static bool mg_tcpip_driver_imxrt_up(struct mg_tcpip_if *ifp) {
struct mg_tcpip_driver_imxrt_data *d =
(struct mg_tcpip_driver_imxrt_data *) ifp->driver_data;
uint32_t bsr = enet_phy_read(d->phy_addr, PHY_BSR);
uint32_t bsr = enet_phy_read(d->phy_addr, MG_PHYREG_BSR);
bool up = bsr & MG_BIT(2) ? 1 : 0;
if ((ifp->state == MG_TCPIP_STATE_DOWN) && up) { // link state just went up
// tmp = reg with flags set to the most likely situation: 100M full-duplex

33
src/drivers/same54.c
View File

@ -15,11 +15,11 @@ static uint8_t s_txno; // Current TX descriptor
static uint8_t s_rxno; // Current RX descriptor
static struct mg_tcpip_if *s_ifp; // MIP interface
enum { PHY_ADDR = 0, PHY_BCR = 0, PHY_BSR = 1 };
enum { MG_PHY_ADDR = 0, MG_PHYREG_BCR = 0, MG_PHYREG_BSR = 1 };
#define PHY_BCR_DUPLEX_MODE_Msk MG_BIT(8)
#define PHY_BCR_SPEED_Msk MG_BIT(13)
#define PHY_BSR_LINK_STATUS_Msk MG_BIT(2)
#define MG_PHYREGBIT_BCR_DUPLEX_MODE MG_BIT(8)
#define MG_PHYREGBIT_BCR_SPEED MG_BIT(13)
#define MG_PHYREGBIT_BSR_LINK_STATUS MG_BIT(2)
static uint16_t eth_read_phy(uint8_t addr, uint8_t reg) {
GMAC_REGS->GMAC_MAN = GMAC_MAN_CLTTO_Msk |
@ -57,8 +57,12 @@ int get_clock_rate(struct mg_tcpip_driver_same54_data *d) {
case GCLK_GENCTRL_SRC_XOSC1_Val:
mclk = 32000000UL; /* 32MHz */
break;
case GCLK_GENCTRL_SRC_OSCULP32K_Val: mclk = 32000UL; break;
case GCLK_GENCTRL_SRC_XOSC32K_Val: mclk = 32000UL; break;
case GCLK_GENCTRL_SRC_OSCULP32K_Val:
mclk = 32000UL;
break;
case GCLK_GENCTRL_SRC_XOSC32K_Val:
mclk = 32000UL;
break;
case GCLK_GENCTRL_SRC_DFLL_Val:
mclk = 48000000UL; /* 48MHz */
break;
@ -68,7 +72,8 @@ int get_clock_rate(struct mg_tcpip_driver_same54_data *d) {
case GCLK_GENCTRL_SRC_DPLL1_Val:
mclk = 200000000UL; /* 200MHz */
break;
default: mclk = 200000000UL; /* 200MHz */
default:
mclk = 200000000UL; /* 200MHz */
}
mclk /= div;
@ -159,16 +164,16 @@ static size_t mg_tcpip_driver_same54_tx(const void *buf, size_t len,
}
static bool mg_tcpip_driver_same54_up(struct mg_tcpip_if *ifp) {
uint16_t bsr = eth_read_phy(PHY_ADDR, PHY_BSR);
bool up = bsr & PHY_BSR_LINK_STATUS_Msk ? 1 : 0;
uint16_t bsr = eth_read_phy(MG_PHY_ADDR, MG_PHYREG_BSR);
bool up = bsr & MG_PHYREGBIT_BSR_LINK_STATUS ? 1 : 0;
// If PHY is ready, update NCFGR accordingly
if (ifp->state == MG_TCPIP_STATE_DOWN && up) {
uint16_t bcr = eth_read_phy(PHY_ADDR, PHY_BCR);
bool fd = bcr & PHY_BCR_DUPLEX_MODE_Msk ? 1 : 0;
bool spd = bcr & PHY_BCR_SPEED_Msk ? 1 : 0;
GMAC_REGS->GMAC_NCFGR =
(GMAC_REGS->GMAC_NCFGR & ~(GMAC_NCFGR_SPD_Msk | PHY_BCR_SPEED_Msk)) |
uint16_t bcr = eth_read_phy(MG_PHY_ADDR, MG_PHYREG_BCR);
bool fd = bcr & MG_PHYREGBIT_BCR_DUPLEX_MODE ? 1 : 0;
bool spd = bcr & MG_PHYREGBIT_BCR_SPEED ? 1 : 0;
GMAC_REGS->GMAC_NCFGR = (GMAC_REGS->GMAC_NCFGR &
~(GMAC_NCFGR_SPD_Msk | MG_PHYREGBIT_BCR_SPEED)) |
GMAC_NCFGR_SPD(spd) | GMAC_NCFGR_FD(fd);
}

20
src/drivers/stm32f.c
View File

@ -30,7 +30,13 @@ static uint8_t s_txno; // Current TX descriptor
static uint8_t s_rxno; // Current RX descriptor
static struct mg_tcpip_if *s_ifp; // MIP interface
enum { PHY_BCR = 0, PHY_BSR = 1, PHY_ID1 = 2, PHY_ID2 = 3, PHY_CSCR = 31 };
enum {
MG_PHYREG_BCR = 0,
MG_PHYREG_BSR = 1,
MG_PHYREG_ID1 = 2,
MG_PHYREG_ID2 = 3,
MG_PHYREG_CSCR = 31
};
static uint32_t eth_read_phy(uint8_t addr, uint8_t reg) {
ETH->MACMIIAR &= (7 << 2);
@ -138,8 +144,8 @@ static bool mg_tcpip_driver_stm32f_init(struct mg_tcpip_if *ifp) {
ETH->MACIMR = MG_BIT(3) | MG_BIT(9); // Mask timestamp & PMT IT
ETH->MACFCR = MG_BIT(7); // Disable zero quarta pause
// ETH->MACFFR = MG_BIT(31); // Receive all
eth_write_phy(phy_addr, PHY_BCR, MG_BIT(15)); // Reset PHY
eth_write_phy(phy_addr, PHY_BCR, MG_BIT(12)); // Set autonegotiation
eth_write_phy(phy_addr, MG_PHYREG_BCR, MG_BIT(15)); // Reset PHY
eth_write_phy(phy_addr, MG_PHYREG_BCR, MG_BIT(12)); // Set autonegotiation
ETH->DMARDLAR = (uint32_t) (uintptr_t) s_rxdesc; // RX descriptors
ETH->DMATDLAR = (uint32_t) (uintptr_t) s_txdesc; // RX descriptors
ETH->DMAIER = MG_BIT(6) | MG_BIT(16); // RIE, NISE
@ -148,8 +154,8 @@ static bool mg_tcpip_driver_stm32f_init(struct mg_tcpip_if *ifp) {
ETH->DMAOMR =
MG_BIT(1) | MG_BIT(13) | MG_BIT(21) | MG_BIT(25); // SR, ST, TSF, RSF
MG_DEBUG(("PHY ID: %#04hx %#04hx", eth_read_phy(phy_addr, PHY_ID1),
eth_read_phy(phy_addr, PHY_ID2)));
MG_DEBUG(("PHY ID: %#04hx %#04hx", eth_read_phy(phy_addr, MG_PHYREG_ID1),
eth_read_phy(phy_addr, MG_PHYREG_ID2)));
// MAC address filtering
ETH->MACA0HR = ((uint32_t) ifp->mac[5] << 8U) | ifp->mac[4];
@ -186,10 +192,10 @@ static bool mg_tcpip_driver_stm32f_up(struct mg_tcpip_if *ifp) {
struct mg_tcpip_driver_stm32f_data *d =
(struct mg_tcpip_driver_stm32f_data *) ifp->driver_data;
uint8_t phy_addr = d == NULL ? 0 : d->phy_addr;
uint32_t bsr = eth_read_phy(phy_addr, PHY_BSR);
uint32_t bsr = eth_read_phy(phy_addr, MG_PHYREG_BSR);
bool up = bsr & MG_BIT(2) ? 1 : 0;
if ((ifp->state == MG_TCPIP_STATE_DOWN) && up) { // link state just went up
uint32_t scsr = eth_read_phy(phy_addr, PHY_CSCR);
uint32_t scsr = eth_read_phy(phy_addr, MG_PHYREG_CSCR);
// tmp = reg with flags set to the most likely situation: 100M full-duplex
// if(link is slow or half) set flags otherwise
// reg = tmp

17
src/drivers/stm32h.c
View File

@ -46,10 +46,10 @@ static uint8_t s_rxbuf[ETH_DESC_CNT][ETH_PKT_SIZE]; // RX ethernet buffers
static uint8_t s_txbuf[ETH_DESC_CNT][ETH_PKT_SIZE]; // TX ethernet buffers
static struct mg_tcpip_if *s_ifp; // MIP interface
enum {
PHY_ADDR = 0,
PHY_BCR = 0,
PHY_BSR = 1,
PHY_CSCR = 31
MG_PHY_ADDR = 0,
MG_PHYREG_BCR = 0,
MG_PHYREG_BSR = 1,
MG_PHYREG_CSCR = 31
}; // PHY constants
static uint32_t eth_read_phy(uint8_t addr, uint8_t reg) {
@ -174,8 +174,9 @@ static bool mg_tcpip_driver_stm32h_init(struct mg_tcpip_if *ifp) {
ETH->MACIER = 0; // Do not enable additional irq sources (reset value)
ETH->MACTFCR = MG_BIT(7); // Disable zero-quanta pause
// ETH->MACPFR = MG_BIT(31); // Receive all
eth_write_phy(PHY_ADDR, PHY_BCR, MG_BIT(15)); // Reset PHY
eth_write_phy(PHY_ADDR, PHY_BCR, MG_BIT(12)); // Set autonegotiation
eth_write_phy(MG_PHY_ADDR, MG_PHYREG_BCR, MG_BIT(15)); // Reset PHY
eth_write_phy(MG_PHY_ADDR, MG_PHYREG_BCR,
MG_BIT(12)); // Set autonegotiation
ETH->DMACRDLAR =
(uint32_t) (uintptr_t) s_rxdesc; // RX descriptors start address
ETH->DMACRDRLR = ETH_DESC_CNT - 1; // ring length
@ -230,10 +231,10 @@ static size_t mg_tcpip_driver_stm32h_tx(const void *buf, size_t len,
}
static bool mg_tcpip_driver_stm32h_up(struct mg_tcpip_if *ifp) {
uint32_t bsr = eth_read_phy(PHY_ADDR, PHY_BSR);
uint32_t bsr = eth_read_phy(MG_PHY_ADDR, MG_PHYREG_BSR);
bool up = bsr & MG_BIT(2) ? 1 : 0;
if ((ifp->state == MG_TCPIP_STATE_DOWN) && up) { // link state just went up
uint32_t scsr = eth_read_phy(PHY_ADDR, PHY_CSCR);
uint32_t scsr = eth_read_phy(MG_PHY_ADDR, MG_PHYREG_CSCR);
// tmp = reg with flags set to the most likely situation: 100M full-duplex
// if(link is slow or half) set flags otherwise
// reg = tmp