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Re: [Qemu-trivial] [PATCH v2] net/pcnet: modernise PCNET_DEBUG
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From: |
Alex Bennée |
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Subject: |
Re: [Qemu-trivial] [PATCH v2] net/pcnet: modernise PCNET_DEBUG |
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Date: |
Fri, 09 Jun 2017 17:04:17 +0100 |
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User-agent: |
mu4e 0.9.19; emacs 25.2.50.3 |
Philippe Mathieu-Daudé <address@hidden> writes:
> Ensure the format strings are always preprocessed, so any problem get
> reported.
>
> Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
> ---
>
> v2: Addressed review feedback from Alex Bennée
> No changes in *printf() calls but using qemu_log_mask() is an option.
>
> hw/net/pcnet-pci.c | 13 ----
> hw/net/pcnet.c | 190
> +++++++++++++++++++++++++++--------------------------
> 2 files changed, 96 insertions(+), 107 deletions(-)
>
> diff --git a/hw/net/pcnet-pci.c b/hw/net/pcnet-pci.c
> index 0acf8a4879..331370a1f2 100644
> --- a/hw/net/pcnet-pci.c
> +++ b/hw/net/pcnet-pci.c
> @@ -38,14 +38,6 @@
>
> #include "pcnet.h"
>
> -//#define PCNET_DEBUG
> -//#define PCNET_DEBUG_IO
> -//#define PCNET_DEBUG_BCR
> -//#define PCNET_DEBUG_CSR
> -//#define PCNET_DEBUG_RMD
> -//#define PCNET_DEBUG_TMD
> -//#define PCNET_DEBUG_MATCH
> -
> #define TYPE_PCI_PCNET "pcnet"
>
> #define PCI_PCNET(obj) \
> @@ -284,11 +276,6 @@ static void pci_pcnet_realize(PCIDevice *pci_dev, Error
> **errp)
> PCNetState *s = &d->state;
> uint8_t *pci_conf;
>
> -#if 0
> - printf("sizeof(RMD)=%d, sizeof(TMD)=%d\n",
> - sizeof(struct pcnet_RMD), sizeof(struct pcnet_TMD));
> -#endif
> -
> pci_conf = pci_dev->config;
>
> pci_set_word(pci_conf + PCI_STATUS,
> diff --git a/hw/net/pcnet.c b/hw/net/pcnet.c
> index 654455355f..6e97c0b176 100644
> --- a/hw/net/pcnet.c
> +++ b/hw/net/pcnet.c
> @@ -45,13 +45,13 @@
>
> #include "pcnet.h"
>
> -//#define PCNET_DEBUG
> -//#define PCNET_DEBUG_IO
> -//#define PCNET_DEBUG_BCR
> -//#define PCNET_DEBUG_CSR
> -//#define PCNET_DEBUG_RMD
> -//#define PCNET_DEBUG_TMD
> -//#define PCNET_DEBUG_MATCH
> +#define PCNET_DEBUG 0
> +#define PCNET_DEBUG_IO 0
> +#define PCNET_DEBUG_BCR 0
> +#define PCNET_DEBUG_CSR 0
> +#define PCNET_DEBUG_RMD 0
> +#define PCNET_DEBUG_TMD 0
> +#define PCNET_DEBUG_MATCH 0
This is an aweful lot of debug knobs. Is there really such a variation
in debug output to bother having this granularity?
>
>
> struct qemu_ether_header {
> @@ -268,7 +268,9 @@ struct pcnet_RMD {
> GET_FIELD((T)->misc, TMDM, TDR), \
> GET_FIELD((T)->misc, TMDM, TRC))
>
> -#define PRINT_RMD(R) printf( \
> +
> +#define PRINT_RMD(R) do { if (PCNET_DEBUG_RMD) { \
> + printf( \
> "RMD0 : RBADR=0x%08x\n" \
> "RMD1 : OWN=%d, ERR=%d, FRAM=%d, OFLO=%d, " \
> "CRC=%d, BUFF=%d, STP=%d, ENP=%d,\n " \
> @@ -292,7 +294,9 @@ struct pcnet_RMD {
> GET_FIELD((R)->msg_length, RMDM, RCC), \
> GET_FIELD((R)->msg_length, RMDM, RPC), \
> GET_FIELD((R)->msg_length, RMDM, MCNT), \
> - GET_FIELD((R)->msg_length, RMDM, ZEROS))
> + GET_FIELD((R)->msg_length, RMDM, ZEROS)); } \
> + } while (0)
> +
>
> static inline void pcnet_tmd_load(PCNetState *s, struct pcnet_TMD *tmd,
> hwaddr addr)
> @@ -510,7 +514,7 @@ static inline void pcnet_rmd_store(PCNetState *s, struct
> pcnet_RMD *rmd,
>
> #endif
>
> -#define PRINT_PKTHDR(BUF) do { \
> +#define PRINT_PKTHDR(BUF) do { if (PCNET_DEBUG_MATCH) { \
> struct qemu_ether_header *hdr = (void *)(BUF); \
> printf("packet dhost=%02x:%02x:%02x:%02x:%02x:%02x, " \
> "shost=%02x:%02x:%02x:%02x:%02x:%02x, " \
> @@ -520,7 +524,7 @@ static inline void pcnet_rmd_store(PCNetState *s, struct
> pcnet_RMD *rmd,
> hdr->ether_shost[0],hdr->ether_shost[1],hdr->ether_shost[2], \
> hdr->ether_shost[3],hdr->ether_shost[4],hdr->ether_shost[5], \
> be16_to_cpu(hdr->ether_type)); \
> -} while (0)
> + } } while (0)
>
> #define MULTICAST_FILTER_LEN 8
>
> @@ -623,14 +627,14 @@ static inline int padr_match(PCNetState *s, const
> uint8_t *buf, int size)
> s->csr[14] & 0xff, s->csr[14] >> 8
> };
> int result = (!CSR_DRCVPA(s)) && !memcmp(hdr->ether_dhost, padr, 6);
> -#ifdef PCNET_DEBUG_MATCH
> - printf("packet dhost=%02x:%02x:%02x:%02x:%02x:%02x, "
> - "padr=%02x:%02x:%02x:%02x:%02x:%02x\n",
> - hdr->ether_dhost[0],hdr->ether_dhost[1],hdr->ether_dhost[2],
> - hdr->ether_dhost[3],hdr->ether_dhost[4],hdr->ether_dhost[5],
> - padr[0],padr[1],padr[2],padr[3],padr[4],padr[5]);
> - printf("padr_match result=%d\n", result);
> -#endif
> + if (PCNET_DEBUG_MATCH) {
> + printf("packet dhost=%02x:%02x:%02x:%02x:%02x:%02x, "
> + "padr=%02x:%02x:%02x:%02x:%02x:%02x\n",
> + hdr->ether_dhost[0], hdr->ether_dhost[1], hdr->ether_dhost[2],
> + hdr->ether_dhost[3], hdr->ether_dhost[4], hdr->ether_dhost[5],
> + padr[0], padr[1], padr[2], padr[3], padr[4], padr[5]);
> + printf("padr_match result=%d\n", result);
> + }
While this improves things it might be cleaner to debug helper/defines
so we can have simpler:
debug_pcnet("foo=%x bar=%d", foo, bar)
Or maybe:
debug_pci(PCNET_DEBUG_MATCH, "foo=%x, bar=%x", foo, bar)
Depending on if we can rationlise the debug control knobs
> return result;
> }
>
> @@ -639,9 +643,9 @@ static inline int padr_bcast(PCNetState *s, const uint8_t
> *buf, int size)
> static const uint8_t BCAST[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
> struct qemu_ether_header *hdr = (void *)buf;
> int result = !CSR_DRCVBC(s) && !memcmp(hdr->ether_dhost, BCAST, 6);
> -#ifdef PCNET_DEBUG_MATCH
> - printf("padr_bcast result=%d\n", result);
> -#endif
> + if (PCNET_DEBUG_MATCH) {
> + printf("padr_bcast result=%d\n", result);
> + }
> return result;
> }
>
> @@ -790,6 +794,10 @@ static void pcnet_init(PCNetState *s)
> uint16_t padr[3], ladrf[4], mode;
> uint32_t rdra, tdra;
>
> + if (PCNET_DEBUG) {
> + printf("sizeof(RMD)=%zu, sizeof(TMD)=%zu\n",
> + sizeof(struct pcnet_RMD), sizeof(struct pcnet_TMD));
> + }
> trace_pcnet_init(s, PHYSADDR(s, CSR_IADR(s)));
>
> if (BCR_SSIZE32(s)) {
> @@ -858,9 +866,9 @@ static void pcnet_init(PCNetState *s)
>
> static void pcnet_start(PCNetState *s)
> {
> -#ifdef PCNET_DEBUG
> - printf("pcnet_start\n");
> -#endif
> + if (PCNET_DEBUG) {
> + printf("pcnet_start\n");
> + }
>
> if (!CSR_DTX(s)) {
> s->csr[0] |= 0x0010; /* set TXON */
> @@ -877,9 +885,9 @@ static void pcnet_start(PCNetState *s)
>
> static void pcnet_stop(PCNetState *s)
> {
> -#ifdef PCNET_DEBUG
> - printf("pcnet_stop\n");
> -#endif
> + if (PCNET_DEBUG) {
> + printf("pcnet_stop\n");
> + }
> s->csr[0] &= ~0xffeb;
> s->csr[0] |= 0x0014;
> s->csr[4] &= ~0x02c2;
> @@ -939,12 +947,13 @@ static void pcnet_rdte_poll(PCNetState *s)
> RMDLOAD(&rmd, PHYSADDR(s,CSR_CRDA(s)));
> CSR_CRBC(s) = GET_FIELD(rmd.buf_length, RMDL, BCNT);
> CSR_CRST(s) = rmd.status;
> -#ifdef PCNET_DEBUG_RMD_X
> - printf("CRDA=0x%08x CRST=0x%04x RCVRC=%d RMDL=0x%04x RMDS=0x%04x
> RMDM=0x%08x\n",
> - PHYSADDR(s,CSR_CRDA(s)), CSR_CRST(s), CSR_RCVRC(s),
> - rmd.buf_length, rmd.status, rmd.msg_length);
> + if (PCNET_DEBUG_RMD) {
> + printf("CRDA=0x%08x CRST=0x%04x RCVRC=%d RMDL=0x%04x "
> + "RMDS=0x%04x RMDM=0x%08x\n",
> + PHYSADDR(s, CSR_CRDA(s)), CSR_CRST(s), CSR_RCVRC(s),
> + rmd.buf_length, rmd.status, rmd.msg_length);
> + }
> PRINT_RMD(&rmd);
> -#endif
> } else {
> CSR_CRBC(s) = CSR_CRST(s) = 0;
> }
> @@ -1013,9 +1022,9 @@ ssize_t pcnet_receive(NetClientState *nc, const uint8_t
> *buf, size_t size_)
> (CSR_LOOP(s) && !s->looptest)) {
> return -1;
> }
> -#ifdef PCNET_DEBUG
> - printf("pcnet_receive size=%d\n", size);
> -#endif
> + if (PCNET_DEBUG) {
> + printf("pcnet_receive size=%d\n", size);
> + }
>
> /* if too small buffer, then expand it */
> if (size < MIN_BUF_SIZE) {
> @@ -1044,10 +1053,10 @@ ssize_t pcnet_receive(NetClientState *nc, const
> uint8_t *buf, size_t size_)
> (BCR_SWSTYLE(s) ? 16 : 8 );
> RMDLOAD(&rmd, nrda);
> if (GET_FIELD(rmd.status, RMDS, OWN)) {
> -#ifdef PCNET_DEBUG_RMD
> - printf("pcnet - scan buffer: RCVRC=%d PREV_RCVRC=%d\n",
> + if (PCNET_DEBUG_RMD) {
> + printf("pcnet - scan buffer: RCVRC=%d
> PREV_RCVRC=%d\n",
> rcvrc, CSR_RCVRC(s));
> -#endif
> + }
> CSR_RCVRC(s) = rcvrc;
> pcnet_rdte_poll(s);
> break;
> @@ -1056,9 +1065,9 @@ ssize_t pcnet_receive(NetClientState *nc, const uint8_t
> *buf, size_t size_)
> }
>
> if (!(CSR_CRST(s) & 0x8000)) {
> -#ifdef PCNET_DEBUG_RMD
> - printf("pcnet - no buffer: RCVRC=%d\n", CSR_RCVRC(s));
> -#endif
> + if (PCNET_DEBUG_RMD) {
> + printf("pcnet - no buffer: RCVRC=%d\n", CSR_RCVRC(s));
> + }
> s->csr[0] |= 0x1000; /* Set MISS flag */
> CSR_MISSC(s)++;
> } else {
> @@ -1069,9 +1078,9 @@ ssize_t pcnet_receive(NetClientState *nc, const uint8_t
> *buf, size_t size_)
>
> if (!s->looptest) {
> if (size > 4092) {
> -#ifdef PCNET_DEBUG_RMD
> - fprintf(stderr, "pcnet: truncates rx packet.\n");
> -#endif
> + if (PCNET_DEBUG_RMD) {
> + fprintf(stderr, "pcnet: truncates rx packet.\n");
> + }
> size = 4092;
> }
> memcpy(src, buf, size);
> @@ -1099,9 +1108,7 @@ ssize_t pcnet_receive(NetClientState *nc, const uint8_t
> *buf, size_t size_)
> crc_err = (*(uint32_t *)p != htonl(fcs));
> }
>
> -#ifdef PCNET_DEBUG_MATCH
> PRINT_PKTHDR(buf);
> -#endif
>
> RMDLOAD(&rmd, PHYSADDR(s,crda));
> /*if (!CSR_LAPPEN(s))*/
> @@ -1121,16 +1128,12 @@ ssize_t pcnet_receive(NetClientState *nc, const
> uint8_t *buf, size_t size_)
> PCNET_RECV_STORE();
> if ((remaining > 0) && CSR_NRDA(s)) {
> hwaddr nrda = CSR_NRDA(s);
> -#ifdef PCNET_DEBUG_RMD
> PRINT_RMD(&rmd);
> -#endif
> RMDLOAD(&rmd, PHYSADDR(s,nrda));
> if (GET_FIELD(rmd.status, RMDS, OWN)) {
> crda = nrda;
> PCNET_RECV_STORE();
> -#ifdef PCNET_DEBUG_RMD
> PRINT_RMD(&rmd);
> -#endif
> if ((remaining > 0) && (nrda=CSR_NNRD(s))) {
> RMDLOAD(&rmd, PHYSADDR(s,nrda));
> if (GET_FIELD(rmd.status, RMDS, OWN)) {
> @@ -1162,13 +1165,11 @@ ssize_t pcnet_receive(NetClientState *nc, const
> uint8_t *buf, size_t size_)
> RMDSTORE(&rmd, PHYSADDR(s,crda));
> s->csr[0] |= 0x0400;
>
> -#ifdef PCNET_DEBUG
> - printf("RCVRC=%d CRDA=0x%08x BLKS=%d\n",
> - CSR_RCVRC(s), PHYSADDR(s,CSR_CRDA(s)), pktcount);
> -#endif
> -#ifdef PCNET_DEBUG_RMD
> + if (PCNET_DEBUG) {
> + printf("RCVRC=%d CRDA=0x%08x BLKS=%d\n",
> + CSR_RCVRC(s), PHYSADDR(s, CSR_CRDA(s)), pktcount);
> + }
> PRINT_RMD(&rmd);
> -#endif
>
> while (pktcount--) {
> if (CSR_RCVRC(s) <= 1) {
> @@ -1217,10 +1218,10 @@ txagain:
>
> TMDLOAD(&tmd, PHYSADDR(s,CSR_CXDA(s)));
>
> -#ifdef PCNET_DEBUG_TMD
> - printf(" TMDLOAD 0x%08x\n", PHYSADDR(s,CSR_CXDA(s)));
> - PRINT_TMD(&tmd);
> -#endif
> + if (PCNET_DEBUG_TMD) {
> + printf(" TMDLOAD 0x%08x\n", PHYSADDR(s, CSR_CXDA(s)));
> + PRINT_TMD(&tmd);
> + }
> if (GET_FIELD(tmd.status, TMDS, STP)) {
> s->xmit_pos = 0;
> xmit_cxda = PHYSADDR(s,CSR_CXDA(s));
> @@ -1260,9 +1261,9 @@ txagain:
> goto txdone;
> }
>
> -#ifdef PCNET_DEBUG
> - printf("pcnet_transmit size=%d\n", s->xmit_pos);
> -#endif
> + if (PCNET_DEBUG) {
> + printf("pcnet_transmit size=%d\n", s->xmit_pos);
> + }
> if (CSR_LOOP(s)) {
> if (BCR_SWSTYLE(s) == 1)
> add_crc = !GET_FIELD(tmd.status, TMDS, NOFCS);
> @@ -1363,9 +1364,9 @@ static void pcnet_poll_timer(void *opaque)
> static void pcnet_csr_writew(PCNetState *s, uint32_t rap, uint32_t new_value)
> {
> uint16_t val = new_value;
> -#ifdef PCNET_DEBUG_CSR
> - printf("pcnet_csr_writew rap=%d val=0x%04x\n", rap, val);
> -#endif
> + if (PCNET_DEBUG_CSR) {
> + printf("pcnet_csr_writew rap=%d val=0x%04x\n", rap, val);
> + }
> switch (rap) {
> case 0:
> s->csr[0] &= ~(val & 0x7f00); /* Clear any interrupt flags */
> @@ -1491,18 +1492,18 @@ static uint32_t pcnet_csr_readw(PCNetState *s,
> uint32_t rap)
> default:
> val = s->csr[rap];
> }
> -#ifdef PCNET_DEBUG_CSR
> - printf("pcnet_csr_readw rap=%d val=0x%04x\n", rap, val);
> -#endif
> + if (PCNET_DEBUG_CSR) {
> + printf("pcnet_csr_readw rap=%d val=0x%04x\n", rap, val);
> + }
> return val;
> }
>
> static void pcnet_bcr_writew(PCNetState *s, uint32_t rap, uint32_t val)
> {
> rap &= 127;
> -#ifdef PCNET_DEBUG_BCR
> - printf("pcnet_bcr_writew rap=%d val=0x%04x\n", rap, val);
> -#endif
> + if (PCNET_DEBUG_BCR) {
> + printf("pcnet_bcr_writew rap=%d val=0x%04x\n", rap, val);
> + }
> switch (rap) {
> case BCR_SWS:
> if (!(CSR_STOP(s) || CSR_SPND(s)))
> @@ -1524,9 +1525,9 @@ static void pcnet_bcr_writew(PCNetState *s, uint32_t
> rap, uint32_t val)
> val = 0x0200;
> break;
> }
> -#ifdef PCNET_DEBUG
> - printf("BCR_SWS=0x%04x\n", val);
> -#endif
> + if (PCNET_DEBUG) {
> + printf("BCR_SWS=0x%04x\n", val);
> + }
> /* fall through */
> case BCR_LNKST:
> case BCR_LED1:
> @@ -1560,9 +1561,9 @@ uint32_t pcnet_bcr_readw(PCNetState *s, uint32_t rap)
> val = rap < 32 ? s->bcr[rap] : 0;
> break;
> }
> -#ifdef PCNET_DEBUG_BCR
> - printf("pcnet_bcr_readw rap=%d val=0x%04x\n", rap, val);
> -#endif
> + if (PCNET_DEBUG_BCR) {
> + printf("pcnet_bcr_readw rap=%d val=0x%04x\n", rap, val);
> + }
> return val;
> }
>
> @@ -1592,9 +1593,9 @@ void pcnet_ioport_writew(void *opaque, uint32_t addr,
> uint32_t val)
> {
> PCNetState *s = opaque;
> pcnet_poll_timer(s);
> -#ifdef PCNET_DEBUG_IO
> - printf("pcnet_ioport_writew addr=0x%08x val=0x%04x\n", addr, val);
> -#endif
> + if (PCNET_DEBUG_IO) {
> + printf("pcnet_ioport_writew addr=0x%08x val=0x%04x\n", addr, val);
> + }
> if (!BCR_DWIO(s)) {
> switch (addr & 0x0f) {
> case 0x00: /* RDP */
> @@ -1634,9 +1635,10 @@ uint32_t pcnet_ioport_readw(void *opaque, uint32_t
> addr)
> }
> }
> pcnet_update_irq(s);
> -#ifdef PCNET_DEBUG_IO
> - printf("pcnet_ioport_readw addr=0x%08x val=0x%04x\n", addr, val &
> 0xffff);
> -#endif
> + if (PCNET_DEBUG_IO) {
> + printf("pcnet_ioport_readw addr=0x%08x val=0x%04x\n", addr,
> + val & 0xffff);
> + }
> return val;
> }
>
> @@ -1644,9 +1646,9 @@ void pcnet_ioport_writel(void *opaque, uint32_t addr,
> uint32_t val)
> {
> PCNetState *s = opaque;
> pcnet_poll_timer(s);
> -#ifdef PCNET_DEBUG_IO
> - printf("pcnet_ioport_writel addr=0x%08x val=0x%08x\n", addr, val);
> -#endif
> + if (PCNET_DEBUG_IO) {
> + printf("pcnet_ioport_writel addr=0x%08x val=0x%08x\n", addr, val);
> + }
> if (BCR_DWIO(s)) {
> switch (addr & 0x0f) {
> case 0x00: /* RDP */
> @@ -1662,9 +1664,9 @@ void pcnet_ioport_writel(void *opaque, uint32_t addr,
> uint32_t val)
> } else if ((addr & 0x0f) == 0) {
> /* switch device to dword i/o mode */
> pcnet_bcr_writew(s, BCR_BSBC, pcnet_bcr_readw(s, BCR_BSBC) | 0x0080);
> -#ifdef PCNET_DEBUG_IO
> - printf("device switched into dword i/o mode\n");
> -#endif
> + if (PCNET_DEBUG_IO) {
> + printf("device switched into dword i/o mode\n");
> + }
> }
> pcnet_update_irq(s);
> }
> @@ -1692,9 +1694,9 @@ uint32_t pcnet_ioport_readl(void *opaque, uint32_t addr)
> }
> }
> pcnet_update_irq(s);
> -#ifdef PCNET_DEBUG_IO
> - printf("pcnet_ioport_readl addr=0x%08x val=0x%08x\n", addr, val);
> -#endif
> + if (PCNET_DEBUG_IO) {
> + printf("pcnet_ioport_readl addr=0x%08x val=0x%08x\n", addr, val);
> + }
> return val;
> }
--
Alex Bennée