Am 20.08.2011 12:39 schrieb Stefan Tauner:
Signed-off-by: Stefan Tauner stefan.tauner@student.tuwien.ac.at
Acked-by: Carl-Daniel Hailfinger c-d.hailfinger.devel.2006@gmx.net with comments.
diff --git a/ichspi.c b/ichspi.c index c38fbfc..a9327de 100644 --- a/ichspi.c +++ b/ichspi.c @@ -1507,6 +1507,24 @@ static void prettyprint_ich9_reg_pr(int i) msg_pdbg(", unused)\n"); }
+/* Set the read and write protection enable bits of PR register @i according to
Change "Set" to "Set/clear".
- @read_prot and @write_prot. */
+static void ich8_set_pr(int i, int read_prot, int write_prot) +{
- void *addr = ich_spibar + ICH9_REG_PR0 + (i * 4);
- uint32_t pr = mmio_readl(addr);
- msg_gspew("PR%u is 0x%08x, ", i, pr);
- pr &= ~((1 << PR_RP_OFF) | (1 << PR_WP_OFF));
- if (read_prot)
pr |= (1 << PR_RP_OFF);- if (write_prot)
pr |= (1 << PR_WP_OFF);
Having some logic which eliminated unnecessary changes of pr would be nice. You could even print "unchanged\n" for that case.
- msg_gspew("trying to set it to 0x%08x ", pr);
- mmio_writel(pr, addr);
Really not rmmio_writel? We want to undo all non-permanent config changes on shutdown.
- msg_gspew("resulted in 0x%08x.\n", mmio_readl(addr));
+}
static const struct spi_programmer spi_programmer_ich7 = { .type = SPI_CONTROLLER_ICH7, .max_data_read = 64, @@ -1648,6 +1666,10 @@ int ich_init_spi(struct pci_dev *dev, uint32_t base, void *rcrb, for(i = 0; i < 5; i++) do_ich9_spi_frap(tmp, i);
/* try to disable PR locks before printing them */if (!ichspi_lock)for(i = 0; i < 5; i++)ich8_set_pr(i, 0, 0);
ich8_ is an unusual prefix. Most other names use either ich7_ or ich9_ prefixes even if the functionality is present in ICH8.
for(i = 0; i < 5; i++) prettyprint_ich9_reg_pr(i);